How to prevent polymer materials from aging

For example, for light colors, use SP, 4010, 1520, 4010NA, etc., and for dark colors, use PPD, BLE, etc.

Add anti-aging agents, which one to add depends on the situation.

http://bbs.hcbbs.com/search.php?searchid=1269&orderby=lastpost&ascdesc=desc&searchsubmit=yes It is recommended that those who want to know more about this can read this book.

The term is too broad. Anti-aging agents, antioxidants, and anti-UV agents are added to different substances for different purposes.

I remember that I have answered this kind of question, so let me try again. From the perspective of the causes of aging, one of the main reasons is the polymer structure itself. Therefore, it is important to improve the structure of polymers to improve aging capabilities. For example, after rubber is vulcanized, there are still unsaturated double bonds, and rubber products are difficult to avoid erosion by sunlight, oxygen, ozone, etc. when used. Therefore, when people research and synthesize new varieties, they should avoid or * * Reduce the double bonds in the polymer chain of rubber. When Natta and others used a complex catalyst to directionally polymerize polyethylene, they predicted that elastomers could be made from copolymerization of ethylene and propylene monomers. Later, they synthesized binary ethylene-propylene rubber. A major structural feature of ethylene-propylene rubber that distinguishes it from other synthetic rubbers is that the main chain does not contain double bonds and is completely saturated, making it the most aging-resistant rubber that is resistant to ozone, chemicals, and high temperatures. However, ethylene-propylene rubber also brings disadvantages that polydiene rubber does not have, such as slow vulcanization rate and difficulty in bonding with metal. So people studied adding an easily vulcanized third monomer to ethylene-propylene rubber to increase the vulcanization rate. At present, ethylene-propylene rubber has become a promising variety of synthetic rubber. The development of polymer science and production technology will continue to improve the properties of polymers, allowing them to delay aging and extend their service life. 　　The second is to add antioxidants during the processing of synthetic materials. For example, add antioxidants to prevent aging caused by oxygen or ozone, add UV stabilizers, heat stabilizers, antifungal agents, etc. 　　Thirdly, physical protection methods can also be used, such as painting, metal plating, dipping in antioxidant solution, etc.

Please recommend some anti-aging books!

It is the most effective type of antioxidant, but antioxidants are generally added according to different materials. Commonly used ones include 1010, TNNP, etc. It depends on what you need!

I don’t know what kind of polymer you are referring to. For example, it is PVC with stabilizer.: Lead, calcium and zinc, organic tin, etc. Lead is toxic and generally not used in water pipes. Organotin-based ones are very expensive, and now calcium-zinc ones are generally used. Of course you can also choose compound stabilizers. If you want to use a compound stabilizer, it is recommended to use one from a major manufacturer. light stabilizer: Mainly UV resistant. It can be divided into two categories: shielding and absorption. Titanium dioxide and UV are both light stabilizers.

Antioxidants, anti-aging agents, and improving the molecular structure will all work.

Adding some antioxidants can slow down the aging of polymer materials.

First, we need to know why polymer materials age? Light (UV. . . ), heat, oxygen, or? Then take measures to prescribe the right medicine. From the source or the use environment, avoid light, heat insulation, oxygen barrier, etc. ； Absorb and transfer energy during the process ； some anti-aging agents ； Mechanistically, it delays the occurrence of aging, etc.