摘要
用同向双螺杆挤出机脱硫制备丁基再生橡胶,研究反应温度和螺杆转速等工艺条件对丁基再生橡胶门尼粘度的影响以及丁基再生橡胶在丁基橡胶(IIR)内胎中的应用。结果表明:用同向双螺杆挤出机可以高效地制备丁基再生橡胶,升高温度、延长反应时间和提高剪切力均有利于提高脱硫程度和降低门尼粘度,其中温度是主要影响因素;随着溶胶质量分数增大和凝胶交联密度减小,丁基再生橡胶的门尼粘度和物理性能降低;将同向双螺杆挤出机制备的40份丁基再生橡胶(门尼粘度为114)用于IIR内胎胶料中,胶料气密性提高,物理性能满足国家标准要求。
Recycled butyl rubber was prepared by a co-rotating twin-screw extruder,and the effect of process conditions such as reaction temperature and screw speed on the Mooney viscosity of recycled butyl rubber and the application of recycled butyl rubber in butyl rubber（IIR）inner tube were investigated. The results showed that,the recycled butyl rubber could be efficiently prepared by the co-rotating twin-screw extruder. The degree of desulfurization was improved and the Mooney viscosity was reduced by increasing temperature,prolonging reaction time and increasing shearing force,and temperature was the most important factor. As the mass fraction of the sol increased and crosslink density of the gel decreased,the Mooney viscosity and physical properties of recycled butyl rubber decreased. As 40 phr recycled butyl rubber with Mooney viscosity of 114 was used in IIR inner tube compound,the air tightness of the compound was improved and physical properties met the national standard requirement.
作者
吴张民
史金炜
李雪健
戈风行
陆涛
杨晓彤
任冬云
张立群
WU Zhangmin;SHI Jinwei;LI Xuejian;GE Fengxing;LU Tao;YANG Xiaotong;REN Dongyun;ZHANG Liqun(Beijing University of Chemical Technology,Beijing 100029;Nanjing Green Gold Rubber and Plastic High-tech Co.,Ltd,Nanjing 210000)
出处
《橡胶工业》
CAS
2018年第10期1108-1112,共5页
China Rubber Industry
关键词
双螺杆挤出机
丁基再生橡胶
丁基橡胶
脱硫
气密性
twin-screw extruder
recycled butyl rubber
butyl rubber
devulcanization
air tightness
