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J. Józefoski, M. Gruszka


The effect of the type and content of the crosslinking and foaming agents on the apparent density

of foamed crosslinked polyethylene – RAPID COMMUNICATION (in English)


Polimery 1988, No 4, 157


DOI: dx.doi.org/10.14314/polimery.1988.157

Summary

The effect of the content of crosslinking agent (0.25—2.0 parts by weight of dicumyl peroxide or 2,5-dimethyl-2,5-di-tert-butylperoxyhexane per 100 parts of polymer) and of the content of foaming agent (2.8—9.0 parts by weight of azodicarbonamide per 100 parts of polymer) in low-density polyethylene compositions of the apparet density of foamed crosslinked polyethylene prepared from these compositions has been investigated. This density has been in the range from 0.046 to 0.397 g/cm, depending on the composition used. The lowest density had foamS containing 0.25 or 0.50 parts by weight of the foaming agent. The higher the foaming agent content, the lower was the apparent density of foams, this effect being the most clear in the range of content from 2.0 to 7.0 parts by weight of this agent.



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