摘要
比较了废旧热固性塑料回收再利用方法;揭示了机械物理再生原理和目标;提出了基于机械物理法的再生回收方法;建立废旧热固性塑料再生回收的工艺和试验流程。通过对热固性塑料回收的试验,验证了在合适的转速、温度和时间条件下,由于机械物理作用,再生制品恢复了一定的塑性成型能力。最后对再生制品(酚醛聚氯乙烯共混)进行力学性能测试。结果表明:再生塑料制品的拉伸强度与弯曲强度分别可达到25 MPa和51 MPa以上,有效回收利用率达到70%以上。
Main methods about recycling technology of waste thermosetting plastics were compared, and the mechanical and physical regeneration mechanism was revealed. Then the regeneration method based on the mechanism was presented. Accordingly, the regeneration recycling process and experiment of the waste thermosetting plastics were determined. By means of recycling and regeneration experiment on thermosetting plastics, it was proved that under appropriate speed, temperature and time conditions, the regeneration specimen restored crystallized ability to a certain extent due to the mechanical and physical function. At last, the mechanical properties of the regeneration specimen （blend of bakelite and PVC ） were tested. Consequently, the experimental results showed that the tensile strength and bending strength of regeneration plastics can reach 25 MPa and 51 MPa respectively, and the waste thermosetting plastics recycling rate was over 70%.
出处
《塑料工业》
CAS
CSCD
北大核心
2013年第11期115-118,共4页
China Plastics Industry
基金
国家自然科学基金资助项目(50975074)
关键词
热固性塑料
机械物理法
再生原理
力学性能
Thermosetting Plastics
Mechanical and Physical Method
Regeneration Principle
Mechanical Properties
