Various performance tests of tile sealant - how long can the sealant tear off

How long can I live with emulsion paint? How to choose environmentally friendly latex paint

How long can I live with emulsion paint? With the improvement of living standards, family decoration now pays more attention to health and environmental protection, and many friends will choose environmentally friendly latex paint. Therefore, there are more and more latex paint products with the "green and environmental protection" on the market. How long can you live with latex paint? How to choose environmentally friendly latex paint? How long can I use emulsion paint? When choosing emulsion paint, I should first smell whether there is a pungent smell. If the selected product has no pungent smell and is produced by a regular manufacturer with environmental protection marks, its harmful substances will not exceed the standard and will not cause harm to the health of residents. Generally speaking, after being brushed on the wall, the emulsion paint can be used for living after a period of window opening and ventilation and drying. If you are not sure, consumers can ask a qualified testing agency to conduct indoor environment testing after decoration, and stay after the testing results meet the national indoor air quality standards. Experts said that from the perspective of decoration monitoring, it is rare that harmful substances exceed the standard due to latex paint brushing. After painting the latex paint, pay attention to keeping the home ventilated, and then put some formaldehyde free plants at home, such as aloe, hanging orchid, tiger tail orchid, etc. At the same time, one or two pots of salt water with a concentration of 5% - 10% can be put in the room, so that the smell of formaldehyde and paint in the house can be basically eliminated in one or two days. Activated carbon can also be placed at home. Activated carbon can adsorb harmful substances such as formaldehyde, benzene, ethanol, toluene, ether, kerosene, vinyl chloride, etc. Through these methods, after painting the emulsion paint, you can move in about half a month. However, the precondition is to buy environment-friendly latex paint. It is recommended to choose well-known brand products to ensure the environmental protection of the products. How to choose environmentally friendly latex paint, but there are many fake and inferior products on the market now, and paint is very important to our health, so how to choose environmentally friendly paint from genuine products is also the key. That's what we often say: one look, two weigh, three start. First, look at the external packaging and environmental protection test report. The packaging mainly depends on the production date, brand and trademark. Environmental monitoring is to monitor VOC, free formaldehyde and heavy metal content. For these things, the country has relevant standards: VOC per liter cannot exceed 200 grams; Free formaldehyde shall not exceed 0.1g per kg. Second, weigh: weigh the weight. Generally speaking, a bucket of 5 liters of qualified emulsion paint is about 7 kg; A barrel of 18 liters is about 25 kilograms. Three hands on: hand can opening detection. High quality emulsion paint is viscous, milky white liquid, without hard lumps, and it is uniform after mixing, without odor. Otherwise, it indicates that the emulsion paint has quality problems.

label: Latex paint

How about the performance of water-based paint? What are the disadvantages?

How about the performance of water-based paint? With the pressure of environmental protection policies, consumers' awareness of environmental protection continues to improve; In particular, provinces and cities across the country have issued VOC emission limit standards, encouraging the use of non solvent paints, water-based paints and other environmental friendly coatings, which has brought opportunities for development. How about the performance of water-based paint? What are the disadvantages? Performance of water-based paint (1) Poor pigment dispersion. Waterborne paint belongs to polymer dispersion system, and pigment dispersion is not very good, so measures must be taken to improve it. (2) The stability of dispersed particles is poor. Dissolved molecules are stable to shear force, heat, pH, etc., while dispersed particles are unstable, so stability measures should be taken for the dispersion system. Dispersed particles will be damaged after being subjected to shear force, so it is necessary to consider avoiding the role of shear force in the process of manufacturing and transporting water-based paint. Dispersed particles are very sensitive to pH value, and acid particles will be formed when acid substances are mixed into the paint, thus causing gelation and destruction of water-based paint. In addition, dispersed particles of water-based paint will also be damaged after freezing during transportation. (3) High surface tension. The surface tension of water is large (see Table 2), so the surface tension of water-based paint is also large. Management should be strengthened during the construction process, otherwise the following defects and film defects are likely to occur during coating: a. easy sagging; b. Poor flattening; c. It is easy to produce shrinkage cavity and pinhole; d. It is not easy to stretch into the small cracks on the surface of the coated object. (4) The evaporation heat and heat capacity are high and are greatly affected by temperature and humidity. The high evaporation heat and heat capacity of water (see Table 2) slow the evaporation of water in water-based paint. 50% of the total amount of solvent in solvent based paint evaporates during spray atomization, while only 25% for water-based paint. Slow evaporation of water is easy to cause sagging during painting, and makes painting efficiency worse. Therefore, an intermediate heating zone is required to volatilize water from the water-based primer coating. Before spraying varnish, 90% of water must be removed from the water-based primer coating (to prevent boiling water from volatilizing through the varnish during final baking) to obtain the best paint film appearance, so as to prevent the water-based primer from being re dissolved by the varnish. The evaporation rate of water is closely related to the relative humidity. When the relative humidity is high, the evaporation rate of water is very low. Therefore, the relative humidity and temperature of the spray booth must be controlled within a certain range to ensure that an appropriate amount of water is volatilized during the spray atomization process, and that water and organic solvents are properly balanced in the film. This proper balance is very important, which can make the paint have proper surface tension to wet the sprayed surface (see Table 2). (5) Good conductivity. The dielectric constant of water is large (see Table 2), so the conductivity of water-based paint is good. Generally, the resistance of water-based paint is less than 0.1M Ω), while solvent based paint has a certain resistance: 0.5~20M Ω. Waterborne paint has good conductivity, and there are special requirements when electrostatic spraying is used. (6) High corrosivity. The water-based paint contains a lot of water, so it is corrosive to containers, transmission pipelines, paint booth and other parts vulnerable to moisture. Stainless steel or plastic products are required. (7) Rheological behavior. When the viscosity of fluid decreases with the increase of shear rate, it is called pseudoplastic fluid. The rheological behavior of pseudoplastic fluid is related to its rheological path, that is, it is time dependent, so it is called thixotropic fluid. Based on the characteristics of water-based paint, the viscosity value measured by flow cup does not have reproducibility, and the complete rheological curve of data points including low shear rate and high shear rate measured by rotary viscometer can give the complete characteristics of rheological behavior of water-based paint. Disadvantages of water-based paint 1. The water-based paint has high requirements on the cleanliness of the surface during construction and materials. Because of the large surface tension of water, dirt is easy to cause shrinkage of the film; 2. The dispersion stability of water-based coatings against strong mechanical forces is poor. When the flow rate in the transmission pipeline changes sharply, the dispersed particles are compressed into solid particles, causing pockmarks in the film. The conveying pipeline shall be in good shape and the pipe wall shall be free from defects. 3. Waterborne coatings are highly corrosive to coating equipment, so anti-corrosion lining or stainless steel materials are required, and the equipment cost is high. The corrosion of water-based coating on the transmission pipeline and the dissolution of metal cause the precipitation of dispersed particles and the pitting of the coating film. Stainless steel pipes are also required. 4. Baking water-based coating has strict requirements on construction environmental conditions (temperature and humidity), which increases the input of temperature and humidity regulating equipment and energy consumption. 5. The evaporation latent heat of water is large, and the baking energy consumption is large. Cathodic electrophoretic coating shall be baked at 180 ℃; However, the time for latex coating to completely dry is very long. 6. Organic cosolvent with high boiling point will produce a lot of oil smoke during baking, which will drop on the surface of the film after condensation and affect the appearance.

label: Waterborne paint

How about the performance of PE pipe products? How are pipes connected?

How about the performance of PE pipe products? PE pipe is a commonly used municipal pipe, which is widely used in the drainage manufacturing field. It has the characteristics of high strength, high temperature resistance, corrosion resistance, non-toxic, abrasion resistance, etc. What about the performance of PE pipe products? How are pipes connected? The PE pipe product has good sanitary performance: no heavy metal salt stabilizer is added when processing the PE pipe, the material is non-toxic, there is no scaling layer, and there is no bacteria, which solves the secondary pollution of urban drinking water. Excellent corrosion resistance: except for a few strong oxidants, it can resist the erosion of various chemical media; No electrochemical corrosion. Long service life: Under rated temperature and pressure conditions, PE pipes can be safely used for more than 50 years. Good impact resistance: PE pipe has good toughness and high impact strength. Heavy objects directly press the pipe, which will not cause the pipe to break. Reliable connection performance: the strength of PE pipe hot-melt or electrofusion interface is higher than the pipe body, and the joint will not be disconnected due to soil movement or live load. Good construction performance: the pipeline is light, the welding process is simple, the construction is convenient, and the comprehensive cost of the project is low. Pipe connection: electrothermal fusibility: special electrothermal welding machine is used to connect straight pipes with straight pipes and straight pipes with pipe fittings. Generally, it is used for pipes below 160mm. Hot melt butt connection: special butt welding machine pipes are used for connection, generally used for pipes above 160mm. Steel plastic connection: flange, screw thread and other methods can be used for connection. Corresponding tools shall be prepared to facilitate construction and ensure construction quality. For example, rotating cutter cuts pipes; Rotating scraper -- scrape off the oxide skin on the surface of the pipe; Wall climbing scraper -- scrape off the scale on the surface of large-diameter pipes; Gas cut-off tool -- to realize gas cut-off field operation.

label: PE pipe

What are the performance advantages of PE pipe?

What are the performance advantages of PE pipe? A good pipe should not only have good economy, but also have a series of advantages such as stable and reliable interface, impact resistance, crack resistance, aging resistance, corrosion resistance, etc. What are the performance advantages of PE pipe? Performance advantages of PE pipes (1) Reliable connection: polyethylene pipe systems are connected by electrothermal melting, and the strength of the joint is higher than the strength of the pipe body (2) Good low-temperature impact resistance: polyethylene has extremely low low-temperature embrittlement temperature, and can be safely used within the temperature range of - 60-60 ℃. During winter construction, due to the good impact resistance of the material, no pipe embrittlement will occur. ⑶ Good resistance to stress cracking: HDPE has low notch sensitivity, high shear strength, excellent scratch resistance, and excellent resistance to environmental stress cracking. ⑷ Good chemical corrosion resistance: HDPE pipeline can resist the corrosion of various chemical media, and the chemical substances in the soil will not cause any degradation to the pipeline. Polyethylene is an electrical insulator, so it will not rot, rust or electrochemical corrosion; In addition, it will not promote the growth of algae, bacteria or fungi. ⑸ Aging resistance and long service life: polyethylene pipes containing 2-2.5% evenly distributed carbon black can be stored outdoors or used for 50 years without being damaged by ultraviolet radiation. (6) Good abrasion resistance: the abrasion resistance comparison test of HDPE pipe and steel pipe shows that the abrasion resistance of HDPE pipe is 4 times that of steel pipe. In the field of slurry transportation, compared with steel pipes, HDPE pipes have better wear resistance, which means that HDPE pipes have longer service life and better economy. (7) Good flexibility: The flexibility of HDPE pipe makes it easy to bend. In engineering, it can bypass obstacles by changing the direction of the pipe. In many cases, the flexibility of the pipe can reduce the consumption of pipe fittings and reduce the installation cost. (8) Low water flow resistance: HDPE pipe has smooth internal surface, and its Manning coefficient is 0.009. Smooth performance and non adhesion characteristics ensure that HDPE pipes have higher transmission capacity than traditional pipes, and also reduce the pressure loss and water transmission energy consumption of the pipeline. (9) Convenient handling: HDPE pipes are lighter than concrete pipes, galvanized pipes and steel pipes, which are easy to handle and install. Lower labor and equipment requirements mean that the installation cost of the project is greatly reduced A variety of new construction methods: HDPE pipeline has a variety of construction technologies. In addition to the traditional excavation method, it can also use a variety of new non excavation technologies, such as pipe jacking, directional drilling, lining, pipe splitting, etc. This is the only choice for some places where excavation is not allowed, so HDPE pipeline has a wider application field.

label: PE pipe

How to choose a water purifier with high performance price ratio?

The water purifier is a healthy butler dedicated to the field of healthy water life. Now it is favored by more and more friends, especially in the first and second tier cities. How to choose a water purifier with high performance price ratio? Xiao Bian tells you that these five points can help you! How to choose a water purifier with high performance price ratio 1. Different water purifiers have different water purification effects due to different structures. Generally speaking, the primary filter water purifier is simple in structure, mainly composed of activated carbon, with limited filtration capacity, and can only be used for rough filtration. The filtered water is best heated and boiled for drinking. Most of the primary filter water purifiers are low-grade water purification products, and the price of each set is between 10 yuan and 150 yuan. 2. Multi stage filter water purifier. The water purifier has two stages of coarse filtration and one group of fine filtration, and the fine filtration mostly adopts hollow fiber filter element, and the filtered water can be directly drunk. The multi-stage filter water purifier is a mid-range water purification product. The price of each set is between 300 yuan and 500 yuan, which can be accepted by wage earners and is widely used by families. 3. Ultrafiltration nanofiltration membrane water purifier, composed of multi-stage prefilter and ultrafiltration membrane, can intercept most of the bacteria and harmful substances. It is the most commonly used direct drinking water purification device in the market with the most common separation and filtration effect, while retaining the mineral trace elements beneficial to human body, and then using the advantages of KDF and activated carbon to effectively inhibit bacteria The growth of fungi and the removal of color and odor ensure that the filtered water can be used more safely and healthily. Moreover, the water yield is relatively large and the waste water discharge is small, so it is faster and more convenient to use in the home kitchen without waiting for a long time. It belongs to popular consumer goods, and the price of each set varies from 200 yuan to 5000 yuan according to different requirements. 4. RO reverse osmosis water purifier is the most ideal water purification product for treating rural water and groundwater. It has three-stage pre filtration, one-stage reverse osmosis membrane precision filtration and one-stage post filtration. The filtered water is free of bacteria, viruses, heavy metals, pesticides, organics, minerals and peculiar colors and odors. It is pure water and can be drunk without heating. This kind of reverse osmosis water purifier is a high-end water purification product, and the price of each set is between 1000 yuan and 5000 yuan. 5. Self cleaning water purifier applies the principle of "running water does not rot, and household hinges do not bark". The most important thing of water purifier is pipeline design and garbage treatment.

label: Water purifier

Are marble tiles expensive? What are the advantages?

Are marble tiles expensive? The texture of each marble tile is unique, especially the combination of these patterns with different colors and sizes is very fashionable, which is why many owners choose to use marble tiles for decoration. Is marble tile expensive? What are the advantages? Are marble tiles expensive? Marble tile stone includes cultural stone, marble, granite, etc. Cultural stone also includes natural cultural stone and artificial cultural stone. The prices of various stones vary greatly due to their different colors, manufacturing processes and textures. Marble price culture stone has various shapes and different colors, and is mostly used for indoor partial decoration, such as the decoration of indoor TV wall, the convex shape around the iron heating hood, or the ground treatment in the courtyard. The decoration effect is close to nature, reflecting the simple and unsophisticated decoration style. The artificial cultural stone is made of natural cultural stone through reprocessing. It is lighter, non-toxic, mildew free, and easy to install. It is suitable for local wall treatment to reduce the load-bearing capacity of the wall. The price is also more expensive than the natural cultural stone. The price of brands produced by joint ventures is generally more than 300 yuan/box. If they are imported brands, the price will be higher, It can reach about 1000 yuan/box. The price of natural cultural stone is much cheaper, generally around 120 yuan to 130 yuan/square meter. Consumers can make targeted purchases according to their economic capacity and needs. Advantages of marble tiles: 1. Beautiful and generous. Maybe the first thing that attracts you is the beautiful shape of marble floor tiles. Few building materials are as beautiful as marble. There are dozens of different varieties of marble. The choice of color ranges from black to pink to white, and even dark green with white texture (this is the most expensive kind of marble). Marble can complement many different decorative styles, from classical to ultra modern. 2. Strength improvement: after marble is compounded with ceramic tile, granite, aluminum honeycomb board, its bending, bending and shear strength is significantly improved, greatly reducing the damage rate during transportation, installation and use. 3. Long life, marble's life is beyond imagination, and it has durability. Marble is one of the oldest building materials, especially favored by Greeks and Romans. Their special marble works still exist today. If the marble is correctly installed in a suitable area, for example, in a floor that is not often used, you may not need to replace the marble in your life. 4. Improvement of anti pollution ability: During the installation or later use of ordinary marble raw boards (full body boards), if cement is used for wet pasting, it is very likely that six months or one year later, various discolorations and stains will appear on the marble surface, which is very difficult to remove. Because the bottom plate of the composite board is harder and denser, and there is also a thin adhesive layer, this situation can be avoided.

label: marble tile

What are the application effects of marble tiles?

What are the application effects of marble tiles? The texture, color, texture, hand feeling and visual effect of marble tiles fully reach the realistic effect of natural marble, and the decorative effect is also greatly superior to natural stone, so they are widely favored by consumers. What are the application effects of marble tiles? Application effect of marble tiles At present, marble tiles are not only a decorative material, but also a work of art in home decoration. In the home decoration, its figure appears in various home occasions, runs through the entire home life, and always gives off a fashionable temperament, which shows the elegant, exquisite, fresh, elegant, solemn and solemn style of the room. Engineering application Today, marble tiles realize the perfect combination of "realistic effect of marble" and "superior performance of ceramic tiles" through continuous pursuit of realistic decoration effect and technological innovation. In addition, natural marble is a limited natural resource, which has various natural defects such as large color difference, many defects, easy water and dirt seepage, difficult care, high price and long supply cycle. Therefore, marble tiles have been gradually selected by more and more construction units and engineers. As a new material of dry hanging curtain wall, marble tiles stand out among many materials because of the lifelike effect of marble and the superior performance of ceramic tiles. In terms of installation and construction, there are also many dry hanging products specially developed for marble tiles in the market. The mature back bolt dry hanging technology is adopted, which is very safe and convenient. It can ensure the quality stability of the product and meet the standards. At the same time, it can meet the requirements of mass production, ensure the stability of the source of goods, and avoid the color difference problem of natural stones. More importantly, the use of marble tiles can greatly save the cost of the project.

label: marble tile

What are the advantages of marble tiles?

Advantages of marble tiles? Marble tiles are ceramic tile products made of marble. Marble used as ceramic tile is very attractive, and the texture of each tile is unique. Especially when these patterns are combined with different colors and sizes, it is very fashionable. What are the advantages of marble tiles? The advantage of marble tile decoration effect Nowadays, ceramic tile has become a "rigid demand" for home life. It completely changes people's life quality and plays the role of "beautician" in modern life. The marble tile with "the lifelike effect of marble and the superior performance of ceramic tile", its texture, color, texture, feel and visual effect fully reach the lifelike effect of natural marble, and the decorative effect is also greatly superior to natural stone, so it is widely favored by consumers. As the pioneer and leader of marble tiles, Li Zhilin believes that the appearance of marble tiles has changed the tiles from "dead" to "alive", giving them more spirituality. It not only fully reflects the luxurious decorative effect of natural marble, but also discards various defects of natural marble, which has been recognized by the terminal market. Physical properties Although natural marble has a beautiful appearance, it has many defects, such as large color difference, many defects, easy water and dirt seepage, difficult to handle, high price and long delivery cycle, which often deter consumers. The emergence of marble tiles has appropriately solved this problem, providing a better choice for consumers who love marble. Marble tiles not only have the realistic texture of natural marble, but also have outstanding performance in physical properties such as waterproof rate, flatness, bending strength, etc. [2] Green and environment-friendly marble tiles have the unique decorative effect and superior characteristics of natural marble, as well as the unique functionality of ceramic tiles. Its appearance has reduced the demand for natural marble in the home decoration industry, turned into a guard of rare stones, and catered to the social development of "resource saving and environment-friendly" advocated by the state; In addition, marble tiles have eliminated people's concern about radiation when choosing artificial marble, and become a new generation of green environmental protection stars. Moreover, the widespread application of cleaner production technology makes the production, processing and application of marble tiles more low-carbon and environmentally friendly, and effectively saves natural resources in a comprehensive way.

label: marble tile

How to clean marble tiles daily

How should marble tiles be cleaned daily? Marble tile is another new type of ceramic tile after ceramic tile, polished tile, antique tile and microcrystalline tile. The texture, color, texture, hand feeling and visual effect of marble tiles fully reach the realistic effect of natural marble, and the decorative effect is even better than natural stone. How should marble tiles be cleaned daily after decoration? Daily cleaning method of marble tiles: 1. Ceramic tiles can be cleaned with detergent, washing powder, etc. 2. Use soapy water and a little mixture of ammonia water and turpentine to clean ceramic tiles to make them more shiny. 3. It should be waxed regularly at an interval of 2-3 months. 4. If there is a scratch on the brick surface, apply toothpaste on the scratch, and wipe it with a dry cloth to repair it. 5. Use a toothbrush dipped with a small amount of decontamination paste to remove the dirt in the gaps of ceramic tiles. The joints between bricks can be cleaned with decontamination paste irregularly, and then coated with a layer of waterproof agent to prevent mold growth. 6. For tea stains, fruit stains, coffee, beer, ice cream, soy sauce vinegar, grease, ink and other pollutants, use sodium hydroxide or bleach to slightly soak the stains, and then wipe them dry. For greasy dirt, you can also stick toilet paper or paper towel on the tile, spray detergent on it, and tear it off like a mask after a while. The greasy dirt will be stuck, and then wipe it with clean cloth dipped in water. 7. Use dilute solutions such as hydrochloric acid and nitric acid to scrub ink, cement and other pollutants for 2-3 times. 8. Paint, coating and other pollutants shall be cleaned with special detergent (mostly sold in the market or supermarket). 9. Rust can be washed and removed with 2% oxalic acid solution, and then wiped with clean water. Grind 3-4 vitamin C tablets into powder, sprinkle on the surface, and then scrub with water several times to remove rust stains. In case of rust and aging stains, soak the rusted area with 10% oxalic acid, citric acid and water mixture, and then wipe it again with concentrated brine. If there is fresh lemon, squeeze out its juice, drop it on the rust stain, rub it with hands, repeat several times until the rust stain is removed, and then wash it with soapy water. 10. Various glues can be removed with banana water. Pure banana water is a colorless, transparent and volatile liquid with a strong smell of bananas. It is slightly soluble in water, soluble in various organic solvents, flammable, and mainly used as a solvent and diluent for painting. 11. Mercury can be cleaned with gasoline or removed with decontamination cream

label: marble tile

How to choose marble tiles? These 5 points are very necessary!

How to choose marble tiles? High quality marble tiles have natural texture. Compared with natural marble tiles, it is difficult for ordinary people to distinguish them, which makes many friends more confused. How to choose marble tiles? I remind you that these five points are very necessary! How to choose marble tiles 1. The color system of marble tiles is very rich. Before purchasing, consumers can refer to the decoration cases of many netizens and listen to the opinions of experts. In addition, it can also be measured according to personal preferences and the size of the housing space to achieve the best decoration effect. 2. As marble tiles are new things, the specifications of ceramic tiles on the market are uneven, and large-sized ceramic tiles are becoming more and more popular. General customers will have the purchase psychology of "big bricks appear grand", thus ignoring the actual size of home space. But in fact, the size of floor tiles is not the bigger the better. Exactly speaking, the selection and purchase of marble floor tiles should be determined according to the actual household space area, so as not to affect the beauty of the living space. 3. Don't rely too much on the manufacturer's award certificate. In the purchase of ceramic tiles, consumers are often confused by the reputation on the surface of the merchants, and ignore the product quality test report and radioactive test report. To judge the quality of marble tiles, we should not only rely on various certificates, but also start with the quality of products. 4. Generally speaking, marble tiles will have a certain color difference, which will directly affect the overall room decoration effect. When purchasing ceramic tiles, consumers can place a batch of products vertically on a plane and observe whether there is any uneven phenomenon. Close the two brick edges together to see if there is any gap. 5. The purchase of ceramic tiles should not only be judged from the appearance, but also should not be taken lightly in the experimental operation. Water absorption is one of the bases to measure the quality of ceramic tiles. Pour some water on the back of the ceramic tile to see how the water absorption rate is. The water absorption rate is an important factor that determines the quality of the ceramic tile. The lower the water absorption of the ceramic tile, the higher its density. In this way, the dense brick hole is not easy to absorb water and dirt, which is easier to clean.

label: marble tile