硫化剂用量对ACM／PA6动态硫化弹性体性能的影响.pdf

第41卷第10期
塑料工业
2013年10月
CHINA PLASTICS INDUSTRY
树脂改性
硫化剂用量对ACM/PA6动态硫化
性体性能的影响
宋阳',郑茔莹',卢晓明',陈弦2
(1.四川大学高分子科学与工程学院,四川成都610064;2.四川大学化学学院,四川成都610065
摘要:以丙烯酸酯橡胶(ACM)和热塑性聚酰胺(PA)塑料为基体,通过动态硫化制备耐油热塑性弹性体。研
究了不同硫化剂用量对ACM/PA6动态硫化体系加工性能、力学性能和耐油性的影响。当ACM/PA6的质量比在70/
30,硫化剂用量在2.0phr时,其加工性能、力学性能和耐油性最好。微观形态研究表明,硫化剂用量为1.0phr时
ACM/PA6体系发生相反转,达到2pr时橡胶颗粒的均匀程度提高并且形成明显的球形颗粒。毛细管流变性能表明
动态硫化后由于发生相反转,使得体系的流动性增加。
关键词:丙烯酸酯橡胶;动态硫化;硫化剂;耐油性
DOI:10.3969/j-jsa.1005-5770.2013.10.001
中图分类号:TQ323.6;TQ325.7
文献标识码:A
文章编号:1005-5770(2013)10-0001-04
Effects of Vulcanizing Agent Amount on the Properties of ACM/PA6
Dynamic Vulcanized Thermoplastic Elastomers
SONG Yang, ZHENG Ying-ying LU Xiao-ming CHEN Xian
(1. The College of Polymer Science and Engineering, Chengdu 610064, China
2. The College of Chemistry, Sichuan University, Chengdu 610065, China)
Abstract Acrylate rubber (ACM and thermoplastic polyamide (PA plastic dynamic vulcaniz
thermoplastic elastomer was prepared. The effect of the different content of vulcanizing agent on
processability, mechanical property and oil resistance property of dynamically vulcanized ACM/PA6
thermoplastic elastomer was studied. As the rubber-plastic blend ratio at 70/30, the dosage of vulcanizing
agent was 2.0 phr, the best processability, mechanical property and oil resistance property of ACM/PA6
elastomer was obtained. Microscopic morphology studies showed that 1. 0 phr of vulcanizing agent can make
the phase transition occurs. The uniformity of the rubber particles can be improved and form distinct spherical
parties at the dosage of 2.0 phr. Capillary rheological properties showed that the flowability of the dynamically
vulcanized elastomer was promoted after the phase reversion occurs.
Keywords Acrylate Rubber; Dynamic Vulcanization; Vulcanizing Agent; Oil Resistance
动态硫化的热塑性弹性体(TPV)是一种或几种常优秀,可在150℃的温度下长期使用,其短期使用
弹性体在加工过程中进行硫化,并在高剪切力之下将温度达到175℃以上,是一种耐油耐热耐候的工程型
硫化相剪切细化,形成交联颗粒分散于塑料相中,形弹性体材料]。PA6是一种由聚己内酰胺开环聚合
成海岛结构,受到拉伸和压缩作用时分散相起到回弹的聚酰胺材料,PA6良好的耐油性和耐热性能及加工
作用使其变形量减少,而连续相则提高其流动性,使中良好的流动性很适合用于TPV材料的连续相。
其能快速成型。丙烯酸酯橡胶(ACM)是一种由日本瑞翁化学的 Masuda等人制备了一种基于ACM
丙烯酸甲酯、丙烯酸乙酯、丙烯酸丁酯为主要聚合单橡胶和尼龙的耐油动态硫化热塑性弹性体,具有良好
体经乳液聚合而制成,由于其主要共聚单体是极性较的耐油耐热性能,这种弹性体具有聚酰胺和聚酯类共
强的酯类,其主链是饱和结构,故其耐热耐油性能非聚的热塑性弹性体一样好的耐油性,其硬度更低,且
*联系人xan.chen@126.com
作者简介:宋阳,男,1987年生,硕士研究生,主要从事热塑性弹性体改性工作。514586972@9qg.com