动态硫化法制备尼龙6/马来酸酐接枝三元乙丙橡胶高韧合金  

Preparation and Properties of PA6/EPDM-g-MAH Alloys with High-Toughness via Dynamic Vulcanization Method

作　　者：郭知理 赵凡[1] 姜茜茜 陈婉[1] 唐龙祥[1] 

机构地区：[1]合肥工业大学化学与化工学院,安徽合肥230009

出　　处：《高分子材料科学与工程》2017年第4期137-142,共6页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51372059)

摘　　要：采用酚醛树脂(PF)、硫磺(S)与过氧化二异丙苯(DCP)作交联剂,研究了马来酸酐接枝三元乙丙橡胶(EPDM-gMAH)的动态硫化对增韧尼龙6(PA6)性能的影响。结果表明,采用PF硫化体系且硫化剂用量为EPDM-g-MAH的1.5%,PA6与EPDM-g-MAH质量比为80/20的合金的综合性能较好,其拉伸强度与缺口冲击强度较未硫化PA6/EPDMg-MAH(80/20)合金分别提高69.5%与128.8%,主要是由于动态硫化提高了PA6与EPDM-g-MAH的相容性。动态硫化还提高了PA6/EPDM-g-MAH合金的热稳定性、PA6的结晶温度和结晶速率。Using phenolic resin （PF）, sulfur （S） and dicumyl peroxide （DCP） as crosslinking agent, the effects of dynamic vulcanization of maleic anhydride grafted ethylene-propylene-diene rubber （EPDM-g-MAH） on properties of nylon 6 （PA6） were studied. The results show that the dynamically vulcanized PA6/EPDM-g-MAH （80/20） blend with PF curing system and the curing agent content of 0.3 % possesses superior properties. The tensile strength and notched impact strength of this blend are higher than those of unvulcanized PA6/EPDM-g-MAH （80/20） blend by 69.5 % and 128.8 %, respectively, which is due to the improved compatibility between PA6 and EPDM-g-MAH via dynamic vulcanization. Moreover, the thermal stability of PA6/EPDM-g-MAH blends, crystallization temperature and crystallization rate of PA6 are also improved because of dynamic vulcanization.

关 键 词：动态硫化 尼龙6 马来酸酐接枝三元乙丙橡胶 合金 力学性能 

分 类 号：TQ333.4[化学工程—橡胶工业]