聚乙二醇对三元乙丙橡胶密封条混炼胶性能的影响  

Effect of Polyethylene Glycol on Properties of EPDM Compound for Sealing Applications

作　　者：柳延波 吕占有 杨宏伟 

机构地区：[1]诺博橡胶制品有限公司,河北保定072550

出　　处：《橡胶科技》2017年第2期20-23,共4页Rubber Science and Technology

摘　　要：研究聚乙二醇(PEG)对三元乙丙橡胶(EPDM)密封条密实胶和海绵胶混炼胶性能的影响。结果表明:添加PEG的密实胶和海绵胶门尼焦烧时间缩短,硫化速度提高;随着停放时间延长,添加PEG的密实胶和海绵胶门尼焦烧时间缩短,硫化速度变化不大,门尼粘度提高;在密实胶中添加PEG、后效性促进剂和防焦剂,胶料的贮存有效期延长;在未添加PEG的海绵胶中增大超速促进剂用量,也能提高胶料的硫化速度,胶料的硫化速度和门尼粘度随着停放时间延长变化不大,贮存有效期延长。The effect of polyethylene glycol （PEG） on the properties of EPDM compounds for sealing applications, including solid compound and foamed compound, was studied. The results showed that the scorch time for solid compound and foamed compound with the addition of PEG was shortened, and the vulcanization speed increased. With the prolonging of the storage time, the scorch time was further shortened, the vulcanization speed changed little, and Mooney Viscosity increased. With use of PEG, delayed-action accelerator and scorch retarder in solid compound, the storage life of the compound was prolonged. In the foamed compound without addition of PEG, ultra-fast accelerator could be used, and its addition level was increased in order to increase vulcanization speed, while the vulcanization speed and Mooney viscosity of the compound changed little during storage period.

关 键 词：聚乙二醇 三元乙丙橡胶 密封条 密实胶 海绵胶 贮存有效期 

分 类 号：TQ336.42[化学工程—橡胶工业]