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Basic knowledge of EVA foam midsole and PHYLON midsole sole materials

2020-09-27 10:40:08
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    Basic knowledge of EVA foam midsole and PHYLON midsole sole materials

    

    The scientific name of EVA processing environmental protection material is hot melt adhesive. Hot melt adhesive is a kind of solid meltable polymer that does not contain water and does not need solvent. The hot melt adhesive is solid at normal temperature, and it melts when heated to a certain temperature and becomes a fluid and cohesive liquid. There are many types of EVA environmentally friendly hot melt adhesives, and the hot melt adhesive used for book binding is polyethylene vinyl acetate.

    

    EVA itself is non-toxic and harmless and belongs to environmental protection materials. Simple example: People in the industry basically grab some EVA particles and put them in their mouths to know their basic indicators. If they are poisonous, who dares to put them in their mouths, so EVA environmentally friendly materials are widely used in today's society.

    

    Usually eva mats are produced and packaged. After getting the eva mat products, especially during use, there will always be a pungent smell, which is unacceptable. Here, I will teach you a method to remove the odor of eva mats: Take the product back first, put it in a ventilated place, let it naturally quiet for a period of time, and then use a special deodorant. Through a specific chemical action, it can effectively remove all kinds of eva foot pads during processing and use. Smell, and can improve the environmental protection level of eva products.

    

    

    

    防静电eva泡棉

    

    

    The research and development of eva foot pads can study different cross-linking degrees of EVA, its own mechanical properties, and the difference in bonding strength with glass/TPT from a mechanical point of view. In this experiment, three kinds of EVA produced by different manufacturers were selected, and two laying methods of high temperature cloth/EVA/EVA/high temperature cloth and glass/EVA/EVA/back sheet were used to laminate the test samples; according to the basic principle of cross-linking and curing, it passed Change the sample lamination parameters to laminate and cure the laminated samples (because the lamination time has a certain influence on the adhesion of EVA and glass/TPT, in order to avoid this factor from interfering with the test results, in the lamination parameters Set the setting to keep the lamination time unchanged, and only adjust the lamination temperature to change the cross-linking degree of the sample), prepare test samples with different cross-linking degrees; use the xylene extraction method to determine the cross-linking degree of the sample, and then Perform tensile test and peel strength test.

    

    The degree of cross-linking refers to the degree to which EVA small molecules are cured to form a three-dimensional network structure through the cross-linking reaction. Generally, the gel content of EVA is measured to reflect the cross-linking and curing of EVA.

    

    Fireproof EVA foam manufacturer, black fireproof EVA foam, white fireproof EVA foam, up to UL94V0 standard, can provide fireproof (horizontal combustion test) report, stable quality, uniform thickness, good density, and can be processed to any specifications.

    

    The solvent extraction method is used to determine the degree of cross-linking of EVA foot pad materials. The test principle is to extract the EVA sample in a boiling xylene solution. All the uncross-linked EVA is dissolved in the xylene solution, while the cross-linked EVA foot The macromolecules of the mat material cannot be dissolved, and the degree of crosslinking is determined by the ratio of the residual sample amount to the total amount of the sample.

    

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