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High-tech enterprise that develops office furniture locks and custom furniture handles.

Knowledge of metal surface treatment technology of some clothes hook

As metal coat hooks processing and modification technology constantly improving, rapidly expanding application fields. For different application fields in the metal clothes surface decoration, material protection, improving the bonding performance requirements are increasing, but various metal clothes material structure and composition, surface properties of the corresponding also have obvious difference. To adapt to the different applications of all kinds of surface treatment technology and the product arises at the historic moment. To adapt to the different need of surface treatment, metal clothes has developed a variety of processing techniques. Commonly used technology is solvent cleaning ( Skim) , corona treatment, short wave ultraviolet radiation treatment, sandpaper, sandblasting processing, plasma etching, chemical etching, heat treatment, etc. According to different materials, often need to choose different treatment methods. Since most of the metal surface treatment method for selection of clothing of low surface energy, many treatment methods, such as decoration, printing, spraying, etc are not directly applicable, and need for surface treatment in the first place. Metal clothes and adhesion of various material is finishing a key problem to be solved. Generally speaking, metal clothes adhesive performance related to material structure and composition. Structure affects polyolefin material such as PP and PE hook, low surface energy, usually only dyne. To achieve good adhesion, general requirement surface can not below dyne. Bonding test showed that PE bonding strength after the plasma treatment can improve The Times; After dealing with the chromic acid, adhesive performance about times can be improved. Through the same processing, PP after the ionization process date bonding strength increase, while after the chromate treatment can improve The Times. Why the chromate treatment effect of PP is so significant, while the PE or else? This is because the PP chain segment each carbon atom has a * * * * * * ( CH) 。 * * * * * * after oxygen ionization or chromate treatment vulnerable to carboxyl oxidation. And even if only a few be oxidized * * * * * *, the bonding performance of PP polarity also can because of the existence of carboxyl and significantly improved. But not for PE this group. , you can see that the chemical structure of polymer to surface treatment is one of the important factors must be considered. Components affect for all sorts of mixing material or copolymer, material composition also affects the choice of surface treatment. For example, fluorine polymer and its surface is lower than polyolefin copolymer, the typical range for dyne. For high fluoride content in resin such as PTFE, adhesive performance improvement after sodium naphthenic acid etching times, and after oxygen or argon plasma treatment will only increase. PE is contrary to the trend. However, fluorine resin copolymer with PE after plasma treatment or sodium naphthenate adhesive performance increase for times. It can be seen that plasma treatment had more to do with PE, while sodium naphthenate processing mainly with fluorine resin. Thus it can be seen that through the copolymerization of different materials can improve the processing performance of materials. For different components of the copolymer, also need to choose the corresponding processing method according to the characteristics of the material.

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