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Gu Xiangshui Testing and Packaging Contract Recruitment
It's upstairs. ABS itself has poor chemical resistance. When it comes into contact with chemical substances such as organic solvents, it is easy to produce chemical cracking where the stress is concentrated. The best way to judge chemical cracking or physical cracking is SEM (Electron Microscope Analysis). If it is chemical cracking, there will be obvious corrosion fracture marks on the fracture surface. If it is a physical crack, the fracture will be relatively flat. The toughening agent in PVC gasket may be separated from PVC and contacted with ABS, which will cause stress cracking after a long time.
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