橡胶常用的增塑剂有哪些

2025-04-07 00:34:59
推荐回答(1个)
回答1:

石蜡油可以添加(但量非常小,会影响物理性能).
增塑剂对硫化胶性能的影响
增塑剂对混炼胶的加工性能、耐寒性、物理机械性能影响很大。随着增塑剂用量增加,胶料的脆性温度降低,但也降低了了拉伸强度。同时,增塑剂用量过多还会渗出。故用量一般控制在30份内。所以选择增塑剂时,应主要考虑以下两个方面:1. 丁腈橡胶与增塑剂的溶解度参数要相近,即两者的相容性好且不易渗出;2. 增塑剂自身的凝固点低,耐寒性好。
配方:NANCAR1965/NANCAR2865 50/50,氧化锌5,硬脂酸1,硫黄0.3,促进剂CZ 1.2,促进剂MBTS 2,DCP 2,快压出炭黑30,中超耐磨炭黑 20,防老剂BLE 1.5,防老剂RD 1,增塑剂4增塑剂对橡胶耐热性和耐寒性能的影响与其结构有关。增塑剂分子中存在环状结构,在橡胶中会阻碍橡胶大分子运动,从而降低其耐寒性。而含亚甲基直链的脂肪酸酯类增塑剂则具有优良的耐寒性能。采用直链型增塑剂并用,其耐寒性能优良。完全满足技术指标,即增塑剂B与C并用达到了协同效应。

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