摘要
研究了DCP/TAIC并用比对NBR/EVM并用胶硫化特性、物理机械性能和热空气老化性能的影响。结果表明,随着TAIC用量的增大,NBR/EVM硫化胶的拉伸强度和100%定伸应力均逐渐增大,压缩永久变形性能逐渐变好;在TAIC用量为0.4份时,其耐热空气老化性能最差。随着DCP用量的增大,NBR/EVM并用胶的硫化速率和交联密度均逐渐增大,其硫化胶的硬度、100%定伸应力和拉伸强度先增大后减小,扯断伸长率逐渐减小,压缩永久变形性能逐渐变好;耐热空气老化性能基本不变。综合分析,在DCP/TAIC并用比为1.4/0.7左右时,NBR/EVM并用胶的性能最好。
The influence of curing agent DCP/TAIC blengding ratio on the curing characteristics,physicmechanical properties,hot air aging properties of NBR/EVM blends were investigated.The results show that,with the increasing of TAIC dosage,tensile strength and modulus at 100% of NBR/EVM vulcanizates increased gradually,and compression set became better gradually;the hot air aging resistance was the worst when the amount of TAIC was 0.4 phr. With the increasing of DCP dosage,the curing rate and crosslinking density of NBR/EVM blends increased gradually,and the hardness,modulus at 100%,tensile strength of NBR/EVM vulcanizates first increased then decreased,and elongation at break decreased gradually,and compression set became better gradually,the properties of hot air aging resistance nearly unchanged.Comprehensive analysis,the properties of NBR/EVM vulcanizates was the best when 1.4/0.7 phr DCP/TAIC in NBR/EVM blends.
作者
张清阳
李旭
张作鑫
邓涛
Zhang Qingyang Li Xu Zhang Zuoxin Deng Tao(School of Polymer Science and Engineering,Qingdao University of Science and Technology, Qingdao 266042,Shangdong,Chin)
出处
《橡塑技术与装备》
CAS
2016年第21期54-57,共4页
China Rubber/Plastics Technology and Equipment
关键词
硫化剂
并用量
硫化特性
物理机械性能
热空气老化性能
curing agent
blend dosage
vulcanization characteristics
physical and mechanical properties
hot air aging performance
