Plastic steel profile is called plastic steel for short. Its main chemical component is PVC, so it is also called PVC profile. It is a new type of building material widely used. Due to its excellent physical properties such as rigidity, elasticity, corrosion resistance and aging resistance, it is usually used as a good substitute for copper, zinc, aluminum and other non-ferrous metals. In housing construction, it is mainly used for the application of push and pull, side hung doors and windows, guardrails, pipes and ceiling materials. It is also widely used in automobile engine protection plates through new process treatment. It is not only light in weight, but also has good toughness, and has the excellent properties of rigidity. Sometimes it is also called alloy plastic steel. The reason why plastic steel profiles can be popularized and applied in a large area and gradually replace wooden and aluminum doors and windows is inseparable from its unique advantages. Compared with aluminum and wooden doors and windows, plastic steel doors and windows have the following advantages: 1 The price is cheap. The price of plastic is far lower than that of aluminum with the same strength and life. This advantage is more obvious due to the sharp rise in metal prices. 2. Rich colors: the application of colored plastic steel profiles adds a lot of beauty to buildings. In the past, wooden doors and windows were used. In order to achieve the harmony between doors and windows and the appearance of the building, paint was often sprayed on the surface of doors and windows. The paint is prone to aging and peeling when exposed to ultraviolet rays. It will be totally unrecognizable in a few years, which is incompatible with the life of the building. Later, colored aluminum doors and windows were invented, but the price was too expensive for ordinary consumers to afford. The use of plastic doors and windows has perfectly solved this problem, and colored film coated profiles can even make fake wood grain effects. 3. Durable: add reinforced steel into the profile cavity to greatly improve the strength of the profile, with the effect of earthquake resistance and wind erosion resistance. In addition, the multi cavity structure of the profile and the independent drainage cavity make it impossible for water to enter the reinforced steel cavity, so as to avoid corrosion of the profile steel and improve the service life of the doors and windows. The addition of UV resistant ingredients also improves the weather resistance of plastic steel profiles, which can be used safely even in tropical areas with strong UV rays. 4. Good thermal insulation performance: the thermal conductivity of plastic steel profiles is far less than that of aluminum profiles. In addition, the design of multi cavity structure has achieved the thermal insulation effect. The research shows that the indoor temperature of rooms with plastic steel doors and windows of the same type in summer is 5-7 ℃ lower than that of rooms with aluminum doors and windows, and 8-15 ℃ higher in winter in different regions. 5. Good sound insulation performance: plastic steel doors and windows with good insulating glass sealing have excellent sound insulation performance Sound insulation has become the main condition for selecting doors and windows, especially for residential buildings in downtown areas. Plastic steel doors and windows are assembled by welding process, and the enclosed multi cavity structure has a very obvious effect on noise shielding. With the wide use of plastic steel profiles, some shortcomings are exposed. Most low-quality plastic steel profiles in China use lead salt stabilizer, and the lead content of finished products is between 0.6% and 1.2%. Lead is a harmful substance to human body. When low-quality profiles age, lead dust will be released. Long term exposure will lead to excessive lead content in the blood, even lead poisoning. The imported calcium zinc and organic tin formulations have solved the problem of lead in products, but due to price reasons and immature technology, they have not been widely used.
1 According to the opening mode, it can be divided into: fixed window, upper hung window, middle hung window, lower hung window, vertical revolving window, side hung door and window, pulley casement window, pulley window, side hung door and window, sliding door and window, sliding casement window, folding door, floor spring door, lifting sliding door, sliding folding door, sliding sliding door, inward sliding door. 2 According to performance, it can be divided into ordinary doors and windows, sound insulation doors and windows, and thermal insulation doors and windows. 3 According to the application position, it can be divided into internal doors and windows and external doors and windows.