比较芳纶短纤维和芳纶浆粕对绝热材料性能的影响

摘要

Compares PPTA short-fiber/EPDM and PPTA pulp/EPDM rubber dispersion,ablation resist-ance and mechanical properties. The results showed that PPTA pulp than PPTA short-fibre has better dis-persion in EPDM rubber. PPTA pulp/EPDM line ablation rate and the quality of the ablation rate respec-tively better than PPTA short-fiber/EPDM. The optimum content of PPTA pulp is 12. 0%,PPTA pulp/EPDM rubber line ablation rate is 0. 064 mm/s,the tensile strength of 3. 0 MPa,breaking elongation is 210%. PPTA pulp excellent ablation resistance and mechanical properties,can replace PPTA short fibre as a high-performance thermal insulation materials and widely used.%比较了芳纶短纤维粕（ PPTA short-fiber）/三元乙丙橡胶（ EPDM）和芳纶浆粕（ PPTA pulp）/三元乙丙橡胶的分散性、耐烧蚀性能与力学性能。结果表明，芳纶浆粕比芳纶短纤维在EPDM橡胶中有更好的分散性，芳纶浆粕的拉伸强度和扯断伸长率均优于 PPTA short-fiber/EPDM，同时可以得到更高的填充量。芳纶浆粕的最优含量为12.0%，PPTA pulp /EPDM橡胶线烧蚀率为0.064 mm/s，拉伸强度为3.0 MPa，扯断伸长率为210%，具有优异的耐烧蚀性能和力学性能，可以代替芳纶短纤维作为高性能绝热材料而广泛应用。