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文中研究了用DCP交联的EPDM和改性聚苯醚(mPPE)直接粘合的机理。另外,还用聚酰胺66(PA66)和聚甲醛(POM)代替mPPE进行了研究。为了分析界面,用氯仿溶解了mPPE。在采用ATR-FT-IR光谱法分析时发现,在界面形成了mPPE交联层,该交联层是因DCP从EPDM迁移至mPPE中后形成的。在180℃的交联温度下采用电子自旋共振(ESR)法检测出mPPE混合物中的碳自由基和DCP。另一方面,在EPDM/PA66粘合物中发生了界面破坏,这是因为DCP迁移至PA66中并未有效地影响自由基的产生。
In this paper, the mechanism of direct bonding between EPDM crosslinked with DCP and modified polyphenylene ether (mPPE) was studied. In addition, polyamide 66 (PA66) and polyoxymethylene (POM) were also used in place of mPPE. To analyze the interface, mPPE was dissolved in chloroform. Upon analysis by ATR-FT-IR spectroscopy, it was found that a mPPE crosslinked layer was formed at the interface formed after migration of DCP from EPDM to mPPE. The carbon radical and DCP in the mPPE mixture were detected by electron spin resonance (ESR) at a crosslinking temperature of 180 ° C. On the other hand, interfacial failure occurred in the EPDM / PA66 adhesive because the migration of DCP into PA66 did not effectively affect free radical generation.