配合体系对低温氟橡胶胶料性能的影响  

Effect of Compounding Systems on Properties of Low-temperature Fluororubber Compounds

作　　者：王功亮 殷浩 张庆红 温新龙 史新妍[1] WANG Gongliang;YIN Hao;ZHANG Qinghong;WEN Xinlong;SHI Xinyan(Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学高分子科学与工程学院/橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《橡胶工业》2022年第10期739-744,共6页China Rubber Industry

基　　金：山东省自然科学基金资助项目(ZR2020KE054)。

摘　　要：以国产低温氟橡胶(牌号CG-FLT)为基体,研究配合体系(补强体系、硫化体系和吸酸体系)对低温氟橡胶胶料(以下简称氟橡胶胶料)性能的影响。结果表明:小粒径炭黑与大粒径炭黑并用可以使氟橡胶胶料获得优异的拉伸性能和较低的脆性温度;随着炭黑用量增大,氟橡胶胶料的压缩永久变形增大,小粒径炭黑对压缩永久变形增大的作用更为明显;硫化剂用量和种类对氟橡胶胶料的脆性温度影响不大;氟橡胶胶料的硫化剂用量不宜过大,以3份硫化剂双25为宜,其交联效率高于等效引发效率用量的硫化剂DCP;相较于氧化镁/氢氧化钙吸酸体系,氟橡胶胶料的吸酸体系优先选用氧化锌;氟橡胶胶料回缩10%的温度T_(R10)基本不受补强体系、硫化体系和吸酸体系的影响,其由氟橡胶基体的玻璃化温度决定。Taking domestic low-temperature fluororubber(brand CG-FLT) as the matrix,the effects of compounding systems,such as reinforcing system,curing system and acid absorption system,on the properties of low-temperature fluororubber compounds(hereinafter referred to as fluororubber compounds) were investigated.The results showed that,the fluororubber compounds could obtain excellent tensile properties and low brittleness temperature by combining small and large particle size carbon black.With the increase of the amount of carbon black,the compression sets of the fluororubber compounds increased.The effect of small particle size carbon black on the increase of compression sets was more obvious.The amount and type of curing agent had little effect on the brittleness temperatures of the fluororubber compounds.The amount of curing agent of the fluororubber compounds should not be too large,3 phr of 2,5-dimethyl-2,5-bis-(tert-butylperoxy) hexane was appropriate,and its crosslinking efficiency was higher than that of the amount of curing agent DCP with the equivalent initiation efficiency.Compared with magnesium oxide/calcium hydroxide absorption system,zinc oxide was preferred for the acid absorption system of the fluororubber compounds.The temperature T_(R10)at which fluororubber compounds retracted by 10% was basically not affected by the reinforcing system,curing system and acid absorption system,which was determined by the glass transition temperature of the fluororubber matrix.

关 键 词：低温氟橡胶 补强体系 硫化体系 吸酸体系 拉伸性能 压缩永久变形 脆性温度 低温回缩试验 

分 类 号：TQ333.93[化学工程—橡胶工业] TQ330.61