摘要
将自制的磺化丁苯橡胶离子聚合体（简称离聚体）在硬脂酸锌存在下于１６０ｍ～１７０℃在开炼机上与直链烃油及炭黑或超细ＣａＣＯ３混炼，并热压成型。考察了不同阳离子中和的离聚体的吸油率及直链烃油、炭黑或超细ＣａＣＯ３的填充量对离聚体力学性能的影响，以及对离聚体在Ｂｒａｂｅｎｄｅｒ密炼机上平衡扭矩的影响。结果表明，该离聚体填充５０％（质量，下同）左右炭黑及４０％左右直链烃油后其产物成为拉伸强度大于１４ＭＰａ、撕裂强度大于５００ｋＮ／ｍ、扯断伸长率大于６００％、永久变形小于３０％的热塑性弹性体；填充３０％超细ＣａＣＯ３的产物，其拉伸强度超过２２ＭＰａ。
Zinc sulfonated SBR ionomers obtained by sulfonation of SBR with acetic anhydride and sulfuric acid followed by neutralization were extended with oil and carbon black or superfine CaCO3.Melt flow and mechanical properties of the oil and carbon black extended ionomers were studied.The results showed that the ionomers containing 50% carbon black and 40% paraffin oil behaved like good thermoplastic elastomers with tensile strength higher than 14MPa,ultimate elongation higher than 600% and permanent set less than 30%.The ionomers containig 30% superfine CaCO3 also exhibited good mechanical properties with tensile strength higher than 22MPa.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
1994年第2期102-104,共3页
China Synthetic Rubber Industry
基金
中国石油化工总公司合成橡胶技术开发中心科研基金
关键词
丁苯橡胶
离子交联聚合
充油
磺化
styrene butadiene rubber
ionomers
thermoplastic elastomer
mechanical property
filler.
