| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: wrapper tape is made from a high-pressure polyethylene-based composition via extrusion, calendering, exposure to a stream of accelerated electrons and alignment in the longitudinal direction by 3-10% at temperature 60-85C. Besides high-pressure polyethylene, the composition also contains a heat stabiliser of benzene propionic acid 3,5-bis (1,1 dimethylethyl) - 4-hydroxy-2-(3- (3,5-bis (1,1-dimethylethyl) - 4-hydroxyphenyl)-1-oxopropylhydrazide, light stabilisers, such as P-type soot - 2.0-2.5% and an oligomeric sterically hindered amine polymer of butanedionic acid with 4-hydroxy-2,2,6,6-tetramethyl-1-piperidine ethanol, and an elasticising additive based on regular butadiene-styrene thermoplastic rubber of the SBS type. ^ EFFECT: defined ratio of components enables to obtain tape, having prolonged resistance to low and high temperatures, optical radiation, impact strength and cracking resistance. ^ 1 tbl |
