The performance of polymer materials often deteriorates during processing, use and storage. For example, the plastic turns yellow, becomes brittle, an…
1. Oxidation and antioxidant of polymers Polymer materials in processing, storage and use During the process, contact with oxygen is inevitable. There…
Amine and phenolic antioxidants have active hydrogen atoms in their molecules , this kindHAtoms are higher than those of molecular chainsHOriginally l…
Phenolic antioxidantIt is the most non-polluting and non-discoloring antioxidant among all antioxidants. The best one, mainly used in the plastics and…
Thioester and phosphite antioxidants are the main auxiliary antioxidants. (1) Thioester antioxidants often include the following two types of dipropio…
Thermal stableagent Its function is to prevent polymer materials from being damaged during processing or use Pricing or cross-linking occurs due to he…
Thermal Aging of PVC The process is relatively complex, and there can often be several chemical reaction processes at the same time. The most importan…
In order to prevent the aging of polymer materials, light stabilizers are usually used. The main light stabilizers currently used include light shield…
Flame retardantWith the development of the synthetic materials industry, a large number of synthetic resins are used In the fields of construction, tr…
The mechanism of action of flame retardants is more complicated and involves various factors, but the role of flame retardants is nothing more than Th…
(1) Polyolefin Polyolefin burns easily. The upper end of the flame is yellow and the lower end is blue. It melts and drips when burning, so it require…
The flame retardancy of fibers includes decorative cloths and fabrics for clothing, public facilities and transportation, etc. , it is increasingly ne…
