With the development and improvement of auxiliaries and formulation technology, UPVC is not only used for pipe fittings and pipes in water supply and drainage, the molecular structure and performance of PVC, the diversity of auxiliaries, and the increasingly perfect formulation technology. It makes UPVC have excellent properties that are incomparable with other polymer materials, mainly in the following aspects:
1 Processing stability
The addition of tin stabilizers in the modified production of UPVC is not only environmentally friendly and harmless, but also enhances its thermal stability and dimensional stability.
Weather resistance
Refers to the ability of plastics to withstand various climates. These include visible and ultraviolet light, moisture, temperature, atmospheric chlorination, and chemicals encountered during product use. The most important weatherability, including color fastness, chalk resistance and durability of physical properties. The weather resistance of the modified UPVC is comparable to that of ASA, and it has better physical and chemical properties. As we all know, among all polymer materials, ASA is famous for its excellent weather resistance. UPVC can completely replace ASA in terms of weather resistance. In my country, after years of research and development of Hanyong plastic new materials, the QUV test has been successfully developed for more than 2500 hours. The UPVC material (that is, the weather resistance is more than 10 years), and the invention patent of the material (patent number: 200710133473.9.) [2] filled the gap.
Flame retardant properties
UPVC itself has good flame retardant performance. The oxygen index of general UPVC is above 27. The oxygen index of UPVC after special modification can reach or even exceed 42, which is unmatched by other general-purpose plastics.
Diversity of performance
Adding additives with different properties to UPVC, UPVC will show different properties. This makes UPVC show diversity. make it more widely used. Making it one of the world's largest production plastic products.