高耐热乙丙橡胶复合材料的制备与性能

从橡胶基体、交联体系、补强体系、防老体系和增塑体系等方面着手，研究了配合体系对乙丙橡胶复合材料耐热老化性能的影响。结果表明：通过极低不饱和度的三元乙丙橡胶和乙烯-辛烯共聚弹性体并用，采用甲基丙烯酸锌作增粘补强材料、液体乙丙橡胶新型增塑剂和N-4（苯胺基苯基）马来酰亚胺（MC）反应性防老剂，制备的三元乙丙橡胶复合材料有很高耐热老化性能；在180℃下老化7d后，硬度变化率小于10％。拉伸强度和拉断伸长率分别保持在70％和50％以上。

Preparation and Properties of High Heat Resistance EPDM Composite

The effects of the rubber matrix, the vulcanizing system, the reinforcing system, the aging system and the plasticizing system on the heat-aging resistance of ethylene-propylene-diene copolymers （EPDM） were investigated. The results showed that the EPDM/POE composites with high heat aging resistance was prepared by using the most lowly unsaturated EPDM and ethylene-octene co- polymers（POE） as rubber matrix,zinc methacrylate（ZDMA） as reinforcing/adhesive agent,liquid eth- ylene-propylene eopolymers（LEPM） as plasticizing agent and N-4 （Anilino phenyl） maleimide（MC） as reactive antioxidant. It was found that the retentions of the tensile strength and the elongation at break were still retained more than 70% and 50% at 180℃× 7d, and the hardness change was lower than 10%.