FIELD: composite materials.
SUBSTANCE: invention relates to a thermoplastic composition intended for use in the cable industry, in the production of packaging material and other products. The composition contains the following components, by wt.%: 91.5-91.9 low-density polyethylene, 0.1-0.2 phenolic or phosphite type heat stabilizer, 8.0-8.3 UV light stabilizer. An ester of 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid and pentaerythritol is used as a phenolic type heat stabilizer, a mixture of 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid ether and pentaerythritol and tri-(2,4-di-tert-butylphenyl)phosphite in a mass ratio of 1:1 is used as a phosphite type heat stabilizer, the UV light stabilizer uses a 30% carbon black concentrate based on low-density polyethylene.
EFFECT: invention makes it possible to increase the technological parameters of the composition, in particular, to increase the fluidity of the melt, thermal stability and resistance to cracking, while maintaining the operational properties of the products obtained from it at a high level.
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Authors
Dates
2021-10-01—Published
2021-02-01—Filed