Knowledge

It is one of the plastic products with the largest output in the world, it is cheap and widely used, and the polyvinyl chloride resin is white or light yellow powder. Different additives can be added

Industrial polyvinyl chloride resin is mainly amorphous structure, but also contains some crystalline regions (about 5%), so polyvinyl chloride has no obvious melting point, and begins to soften at ab

It has stable physical and chemical properties, is insoluble in water, alcohol, gasoline, and has low gas and water vapor leakage; it can withstand any concentration of hydrochloric acid, sulfuric aci

Polyvinyl chloride has poor stability to light and heat. The softening point is 80°C, and decomposition starts at 130°C. Without heating the stabilizer, polyvinyl chloride begins to decompose at 100°C

The natural color is light yellow, translucent and shiny. The transparency is better than that of polyethylene and polypropylene, but worse than that of polystyrene. Depending on the dosage of additiv

​PVC materials with special requirements generally need to be imported from abroad. The more famous ones in foreign countries are United Carbon Corporation and Borealis. With the continuous research a

The softening point of polyvinyl chloride resin is low, about 75-80 °C, and the embrittlement temperature is lower than -50~-60 °C. The long-term use temperature of most products should not exceed 55

The measurement method of dehydrochlorination was in accordance with JIS-K-6723, and the measurement temperature was 180°C. Taking the time of dechlorination of the uncolored polyvinyl chloride compou

The fading, darkening, or hue change of a pigment is generally caused by the pigment's reactive genes. These reactive genes can interact with moisture or chemicals in the atmosphere—acids and alkalis.

Refers to the ability of pigments to withstand various climates. These include visible and ultraviolet light, moisture, temperature, atmospheric chlorination, and chemicals encountered during product

Another problem is "fouling". It means that the colorant is freed from the system due to poor compatibility or incompatibility of the colorant during coloring processing, and is deposited on the surfa

Migration occurs only in plasticized PVC articles and when dyes or organic pigments are used. The so-called migration is that some soluble dyes or organic pigments existing in the surrounding solvent