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  • Test specification for paint adhesion Test method for paint adhesion

    label: Paint adhesion test specification National standard for paint adhesion test Paint adhesion testing unit

    In our family, the living room is the area where we have the most activities, so the decoration of the living room is particularly important, because the decoration of the living room is a microcosm of the family. The good decoration of the living room reflects the style and grade of the whole family decoration, and reflects the aesthetic taste and taste of the host. But how much do you know about the paint adhesion test specifications? Today, Xiaobian will introduce the paint adhesion test specification from the perspective of material. 1、 What are the test methods for paint adhesion; The film with poor paint adhesion is easy to crack and fall off, and cannot be used. 2. Paint adhesion detection method (1) First, use a graphic knife or a scriber to draw a cross grid on the paint coating, one knife horizontally and one knife vertically, forming a hundred small squares, the grid is 1mm * 1mm. The cut of the scriber should reach the bottom of the paint (2) Brush five or six times with a brush in the diagonal direction, clean the small fragments, and then stick the tape on the cut and pull it apart. The adhesive force of the tape is 350-400g/m2 (3) Finally, observe the grid area with a magnifying glass (4) See the test standard of paint adhesion for the test results. II. Adhesion standard of emulsion paint wall paint or national standard, and test methods. Adhesion of emulsion paint wall paint refers to the degree of fastness of the paint film and the surface of the object to be attached through physical and chemical force. Adhesion of paint film is one of the important indicators to assess the performance of paint film, Whether the adhesion is good or bad is related to the quality of the whole supporting coating. Editing the inspection standard of paint adhesion. We judge the paint adhesion mainly by the number of topcoats or electroplating layers stuck by tape and the percentage of hundred grids. There are five grades in total: 1. ISO grade: 5=ASTM grade: 0B, which means that the paint peeling area is more than 65%. 2 ISO grade: 4=ASTM grade: 1B, some or all of the squares are peeled off, and the peeling area is more than 35% - 65%. 3, ISO grade: 3=ASTM grade: 2B, which means that there is partial peeling or large area of paint peeling along the edge of the cut, and even some of the squares are peeled off as a whole, with an area of more than 15% - 35%. 4. ISO grade: 2=ASTM grade: 3B, representing that the edge of the cut and intersection is peeled off more than 5% - 15%. 5, ISO grade: 1=ASTM grade: 4B, representing that there is a small piece of paint peeling at the intersection of the cut, and the actual damage in the grid area is less than or equal to 5%. 6 ISO grade: 0=ASTM grade: 5B, which means that there is no peeling off at the edge of the grid, and the cut edge is completely smooth. This is the highest level of adhesion. How to improve the adhesion between the substrate and paint to improve the adhesion between plastic and metal substrates and paint coating is an effective way to improve the adhesion between the substrate and paint coating through Jiongsheng adhesion promoter, which is sprayed between the substrate and paint, Baige Adhesion reaches 5B. III. Related Concepts 1. In the early stage of painting, vegetable oil was the main raw material, so it was called "paint", such as health, environmental protection and original ecology of cooked tung oil. Both traditional coating products with natural materials as raw materials and modern developing coating products with synthetic chemical products as raw materials belong to organic chemical polymer materials, and the film formed belongs to the type of polymer compounds. According to the classification of modern chemical products, coatings belong to fine chemical products. Modern coatings are gradually becoming a kind of multi-functional engineering materials, which is an important industry in the chemical industry. The more authoritative book "Coating Technology" in the Chinese coating industry defines as follows: "Coating is a kind of material, which can be coated on the surface of an object with different construction processes to form a solid film with firm adhesion, certain strength and continuity. The film thus formed is generally called a coating film, also called a paint film or coating." 2 The International Organization for Standardization (ISO), abbreviated as ISO, is a global non-governmental organization and a very important organization in the field of international standardization.. ISO I comes from the Greek word "ISOS", that is, "EQUAL" - meaning equality. ISO International Standards Organization was founded in 1946. China is an official member of ISO. The national organization representing China to participate in ISO is the China National Bureau of Technical Supervision (CSBTS). ISO is responsible for the standardization activities in most fields (including monopoly industries such as military industry, petroleum, shipbuilding, etc.). ISO has 117 members, including 117 countries and regions. ISO's highest authority is the annual "General Assembly", and its daily office is the Central Secretariat, located in Geneva, Switzerland. The Central Secretariat currently has 170 staff members under the leadership of the Secretary General. ISO aims to "promote the development of standardization and its related activities in the world, facilitate the international exchange of goods and services, and carry out cooperation in the fields of intelligence, science, technology and economy." ISO carries out technical activities through its 2856 technical structures, including 611 technical committees (SC for short), 2022 working groups (WG), and 38 special working groups. Relevant recommended TR90 treatment agent Effective method to improve the paint adhesion of TR90 material surface What is the reason for the poor paint adhesion and how to improve the adhesion of metal surface paint? How to improve the adhesion of paint film The method and core principle of improving the adhesion of nylon plastic paint by paint peeling nylon treatment agent How to solve the problem that the adhesion of paint film is not strong? How to improve the adhesion of paint coating? Effective solutions to improve the adhesion of paint film on metal surface

    2018-10-15 15:51:07
  • Various performance tests of tile sealant - how long can the sealant tear off

    label: ... test the sealant test ... Seaming agent How long can the sealant be removed

    Video loading Various performance tests of tile sealant, comments from netizens on waterproof, stain resistant, temperature, environmental protection and strength tests

    2017-09-18 15:49:58
  • After the waterproof coating is completed, be sure to test the waterproof, otherwise it will be useless to cry when water leaks - waterproof coating

    label: Decoration waterproof test waterproof test renovation Waterproof coating Waterproof coating construction method Top ten brands of waterproof coating

    Waterproof is an important part of home decoration. If the waterproof is not good enough, it will be bad if it is leaked to the downstairs home. Let's say our house is decorated for 100000 yuan, while the downstairs house is decorated for 300000 yuan. How much will you have to pay if you miss someone else's home? It's no use crying at that time, so waterproof is very important. After the waterproof coating is finished. A waterproof test is required, usually lasting 2-3 days. Don't say you don't have time or ask the master to help you test this step, because the decoration is always your own. I live by myself, so it's better to be present by myself. The waterproof tester will generally put a little water in the place to be tested, such as the toilet. The water level generally submerges around the downcomer. That is about 10 cm. If there is more cement mortar around the sewer pipe, you can also put more cement mortar around the sewer pipe to submerge it. After discharging the water, wait for two or three days and then go downstairs to check the situation. If there is no problem, you can do the next step.

    2017-07-26 13:41:06
  • Test of Yikou 800CPRO water purifier - Yikou water purifier

    label: RO water purifier Yikou RO Water purifier Ecowater Yikou water purifier Replacement of filter element of Yikou water purifier Price of Yikou water purifier

    The newly decorated families have repeatedly promoted the selection of water purifiers on the agenda. The reason can be found that the current water quality situation in both cities and towns is worrying, and for all people, family health is undoubtedly more important. It is not difficult to understand the trend of rapid sales growth of water purifiers in the market as representatives of health appliances. The water purifier products have been accepted by the majority of users, but they are not so friendly to users when choosing. This is mainly because the types and brands of water purifier products are too complex for users to be confused when choosing, so providing users with meaningful shopping guides is exactly what we should do now and do our best. The water purifiers in the mainstream market can be divided according to the principle. The market share of RO reverse osmosis water purifier and ultrafiltration membrane water purifier has increased rapidly recently. Why? Healthy drinking water has become the focus of the market. The principle of RO reverse osmosis water purifier is to use reverse osmosis membrane to purify water. RO reverse osmosis membrane was used in medicine earlier, and this membrane and technology are used by nephrotic patients during hemodialysis. When medical technology is applied to life, the advantages of RO reverse osmosis water purifier are obvious, that is, ultra-high filtration precision. At present, only RO reverse osmosis water purifier on the market can achieve 0.0001 μ m high filtration precision. Through the role of supporting filter element and RO membrane, the filtered water can be roughly considered as pure water. Most of the water purifiers are purchased for health, so RO membrane products with high filtration accuracy will inevitably be sought after. Today's main character, the main character we invited to evaluate today is the 800CPRORO reverse osmosis water purifier from Yikou. Through the evaluation of its experience, we hope to communicate more about the knowledge of water purifiers with readers, so as to solve practical problems such as whether to buy or not, which kind to buy, and so on. Without much nonsense, we entered the formal evaluation of Yikou 800CPRO water purifier today. Unpacking: RO also has an unexpected small size. Before unpacking, please ask us a question. Have you noticed the volume of RO water purifiers on the market, especially RO products with water storage tanks. Yes, RO RO water purifiers on the market are generally large in size, which has brought some problems to users in addition to the atmosphere. It is obvious that there will be insufficient space under the kitchen during installation. After installation, the size is surprisingly small (about 2.5 Apple 6Pplus height). Then, the front impression of the 800CPRORO reverse osmosis water purifier of Yikou is small. After the package of the water purifier is opened, it shows a small main body. The purification of the water purifier is completed by three filter elements. The dual activated carbon filter elements are placed in the front and rear two stages respectively, and the imported Dow RO reverse osmosis membrane is in the middle. The three-stage filtration has been fully used when in use. The household water purification ecosystem that Yikou has been building also allows it to save the PP cotton filter end, which can ensure the service life of the filter element of the water purifier. The compact water storage tank is already a larger size accessory, and the rear activated carbon filter element can help improve the taste in addition to its purification function. Because the water quality purified by RO products may be slightly sour and taste different from daily drinking, the improved taste of the rear activated carbon filter element can help more consumers accept higher precision RO products, The capacity of the vacuum aseptic bucket is 6L, which can meet the demand and also improve the pain point of traditional use of RO water purifier - low water flow. The standard lead-free direct drinking faucet (certified by NSF of the National Health Foundation of the United States) is a RO water purifier product equipped with a water storage bucket. It should be noted that the water storage bucket that is strictly sealed from the factory will not cause secondary pollution. In addition, it can help to neutralize the water quality. It should be known that the water quality of the RO principle in the first few seconds before the water is discharged is not the peak of purification. It can be seen that all water pipes are made of safe metal materials to avoid secondary pollution. In addition, the overall water purifier is made of non-toxic, odorless materials that meet the national material standards, which is healthy and safe. Exploration: Dow RO membrane? What is the difference between RO membrane and medical application? Western medicine is the first one to apply it to clinic. The filtration precision of RO membrane can reach 0.0001 μ m. According to the current water purification technology on the market, RO membrane is a technology that can achieve almost all desalination. In short, it can remove ions in water to obtain water sources that are almost pure water. 800CPRO uses a whole piece of original imported Dow RO film. Dow is a well-known RO film manufacturer. There are many kinds of water purifiers. If you want to purify RO, it is a better choice. What is the difference between Dow RO membrane and other RO membranes? First of all, its cost is almost high in the current market. Because its production components are only in the United States, its full original import also increases its quotation cost. In addition to price, years of application research and development have also made it a leader in water purifier treatment technology. RO reverse osmosis membrane is the core technology of the product. Dow reverse osmosis RO has a low failure rate. For a class of electrical appliances used for family health protection, safety is undoubtedly more critical, and Dow's high stability has just become a major advantage. At the same time, it also has a very high flux and low operating pressure demand, which is reflected in the user experience at the application level. For example, the power free design of Yikou 800CPRO is to use Dow's low pressure and high efficiency filtration characteristics, and the RO water purifier market that can filter without plugging in power is also a minority. The front and rear filter elements are also cutting-edge technologies from abroad. What should be popularized is that only high-quality RO reverse osmosis water purifiers can really filter metal ions in the current market, and other technologies can only achieve directional replacement to completely prevent water pollution threats. This requires attention when purchasing. Except for RO products, filtering all heavy metal ions is a publicity stunt. Several types of heavy metal ion filtering can be achieved, but only RO products can achieve ion purification. Installation process: After we understand the basic working principle and appearance of the product, we will formally install and test the product. The installation of Yikou requires an appointment. After the appointment, the installation master came to our designated place to install according to the agreed time point. In addition to the professional installation process master who can answer all the questions we have provided, Yikou after-sales also called about a week after the installation to inquire about the installation process, which was very considerate. The installation process is divided into two steps: machine assembly and installation under the kitchen. Surprisingly, the two installation processes of the whole machine together take about 10 minutes, forming a contrast with other brand products. Why is the installation so fast? The design of snap on filter element is more convenient for installation. You can connect it yourself. This is related to the product design. Yikou 800CPRO adopts a unique integrated snap on filter element design, which can be installed together with the connector as long as you twist the filter element. At the same time, because the Dow RO film used in the product can operate normally under low pressure, the whole machine does not need to be powered on, which simplifies the installation steps to a certain extent. It is important to know that there is no power socket under the general household kitchen. Clear color marking of water pipes Multicolor water pipes are also conducive to the convenient installation of products. Green, yellow, red and blue are respectively tap water interface, water storage tank interface, waste water discharge interface and tap interface. After the pipeline is connected, the theme and water storage tank are fixed, and the faucet is installed, all the installation steps are completed. It seems that the 10min installation time is not difficult to understand. In fact, the simple design is also conducive to the user's self maintenance in the later period. Small trouble shooting can be easily completed by himself because the product color is clearly marked and the installation is simple. Test link: The high precision of TDS close to 0 has reached the test link. In this link, we test the TDS value, PH value and residual chlorine content of the water sample. All the water samples taken in the test were from Yikou 800CPRO. In order to ensure the accuracy of the test results, the water was drained for about 15min after the water samples were taken, and then the sampling test was carried out. TDS represents the total amount of soluble solids, measured in milligrams per liter (mg/L), which indicates how many milligrams of soluble solids are dissolved in 1 liter of water. The higher the TDS value is, the more impurities are contained in the water, but these impurities cannot be detected, and beneficial natural minerals will also be included in the category of "impurities". Therefore, within a reasonable range, it cannot be used as a standard to determine whether the water is suitable for drinking, but it can provide an auxiliary description of the product desalination rate. The change of TDS is obviously consistent with our expectation. After RO reverse osmosis treatment, the TDS value of the water sample is only 3. The high purification precision removes all bacteria, rust, and ions in the water, eliminating all potential water pollution emergencies. The PH indicator test reading is about 6.5. The PH of the water sample after several degrees in the PH test is about 6.5. Why is it weakly acidic? Isn't the tap water alkaline? The weak alkalinity in tap water is mainly due to the weak electrolysis phenomenon in the water. After filtering, the number of ions suddenly decreases, so the water presents a neutral nature. 6.5 also conforms to the PH reading range of pure water. Residual chlorine test - residual chlorine test before purification - disinfection is required after purification, so bleaching powder or chlorine will be added to tap water for treatment. We can understand that residual chlorine is inevitable. It can be seen that the purification effect of residual chlorine is very obvious, and the indicator shows that the purified residual chlorine has been removed. Just a hint, according to the statistics of relevant departments, the main way for residual chlorine to enter the human body is not drinking, but washing, cooking and other ways. Residual chlorine can enter the human body through the skin, and more than 60% of it is through the skin. Cough, girls who love beauty, please pay attention! It was written at the end: Yikou whole house water purification ecosystem was initially formed. From the data test results, we read that the product's high-precision purification ability was really good, and it was completed under the premise of small volume and no electricity. Thanks to the high-quality RO membrane, the selection of Yikou 800CPRO really gave us a surprise. Not only in terms of purification capacity, the product also performs well in the use level. In the actual use process, because the design water flow of the water storage tank is significantly greater than the average value of the RO water purifier on the market, the situation of waiting for water will not happen here. The water flow is large and the experience is better (it only takes 5-7S to fill a 100ml beaker). The water storage tank and the no electricity design are more reasonable. The vacuum design of the water storage tank can avoid secondary pollution, and at the same time can increase the purity of the product water and the flow rate. High flow rate is very necessary for users, The slow purification speed of RO membrane will cause users to wait for a long time, which will make users feel bored over time. The power free design is more necessary for the space under the kitchen. The power free design is because there is no supercharging equipment in the product, and almost no noise can be heard during operation. The concept of water purification ecology makes life easier. The primary purifier on the right side of the figure above also comes from Yikou, which is the concept of whole house water purification ecology created by Yikou. Through the primary purification, the water source entering the household has the primary purification, through which the large particle pollutants can be completely removed. The purification level of the water purifier such as PPcotton can not only be eliminated, but also can protect the normal operation of water appliances in the house such as water heaters, effectively extending the service life. The concept of water purification ecology is more suitable for new decoration users, The solution for once and for all is here. It was written at the end: exquisite precision=the end of the testing of high-quality products. We were deeply impressed by the exquisite design and the filtering precision of the products from Yikou in the United States. More importantly, the optimization of the product itself makes the water purification experience better. The space under the kitchen is not a problem, the noise is not a problem, and the water flow is not a problem, These are exactly the improvements that need to be made during the introduction of water purifier products. A little improvement can make users feel sincere. Yikou has done so, and certainly more users are willing to join the water purification family. After all, health is everyone's big capital. Netizens commented that filter consumables are too expensive! Replace three filter elements, more than 2000. The big pot means small, but Yikou doesn't dare to say that the ultrafiltration membrane is bad. She has her own product! The purchase of water purifier depends on the accuracy rather than the water source; Regardless of the number of users, only import brands; Can you just listen to nonsense without looking at the filtration process? It's not good to copy and paste the small plait from Du Niang. It's not good to make it hard

    2017-02-22 10:36:10
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