Polyene microporous multilayer diaphragm and manufacturing method thereof
A manufacturing method and microporous technology, which are applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of low film breaking temperature, low safety and high safety, and achieve improved safety, The effect of preventing fire and explosion accidents and the simple manufacturing process
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[0034] A polyolefin microporous multi-layer diaphragm, which is composed of three or more polyolefin layers combined. Among the polyolefin layers, at least one layer is a polyethylene layer, and at least one layer is a polypropylene The polyethylene layer and the polypropylene layer are in close contact with each other, and at least one of the adjacent polyethylene and polypropylene layers is a blend containing a certain amount of ethylene-propylene copolymer.
[0035] It is worth mentioning that due to the poor compatibility of polyethylene and polypropylene, the main purpose of adding a certain amount of materials that have good compatibility with polypropylene and polyethylene (such as ethylene-propylene copolymer) is to improve Because of their compatibility, the present invention requires that at least one of the adjacent polyethylene and polypropylene layers is a material that has good compatibility with polypropylene and polyethylene. When two or more polypropylene layers ...
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