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Preparation and characterization of low‐halogen and nonhalgoen fire‐resistant low‐smoke (FRLS) cable sheathing compound from blends of functionalized polyolefins and PVC
Author(s) -
Sen Achintya Kumar,
Mukherjee Bibha,
Bhattacharya A. S.,
Sanghi L. K.,
De P. P.,
Bhowmick Anil K.
Publication year - 1991
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1991.070430910
Subject(s) - polyolefin , materials science , composite material , grafting , polymer , thermoplastic elastomer , elastomer , polypropylene , polymer chemistry , copolymer , layer (electronics)
An attempt is made to develop a novel series of cable sheathing compounds with variation in chlorine content and sufficient fire retardance and unique low‐smoke characteristics. These are prepared by blending PVC and functionalized polyolefins in different compositions. PE and EPDM have been functionalized by grafting dibutyl maleate (DBM) using DCP as initiator. FRLS compounds made from PVC‐functionalized polyolefin blends possess the special characteristics of low‐smoke, low‐acid‐gas generation, increased fire retardance, and improved volume resistivity, which are much better in comparison with a typical PVC sheathing compound. Thermoplastic elastomer (TPE) based nonhalogen FRLS compounds are also reported. The mechanisms for grafting, polymer‐polymer and polymer‐filler interactions have been presented.