News
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What is the effect of PE anti-aging masterbatch?
Time:
Oct 15,2021
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Author:
Polyethylene test is a common thermoplastic polymer material with high molecular weight and excellent mechanical properties. It is widely used in films, communication cables, and various plastic products and packaging materials. However, polyethylene in the use of the process because of a variety of environmental factors affecting the role of aging, so that lost the use of value. At this time, PE anti-aging masterbatch will be used.
When it comes to the effect of PE anti-aging masterbatch, we must first explain the reasons for PE aging.
On the one hand, under the direct action of heat and oxygen, PE produces free radicals inside PE, which in turn leads to the chain reaction of aging. On the other hand, when PE is exposed to sunlight, its light-absorbing groups are also excited to generate free radicals.
Among them, ultraviolet light is the main factor causing PE aging, and its energy is attacking the chemical structure of the polymer to cause bond breakage, chain scission, etc. The chain-breaking free radicals and molecules in an unstable excited state are prone to oxidation reactions to generate hydroperoxides and carbonyl groups, which are the main groups that initiate the chemical reactions of PE.
The addition of PE anti-aging masterbatch can absorb the free radicals generated by ultraviolet light at the beginning, so as to achieve the purpose of anti-aging.
Real-time information
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Oct 13,2024
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