Contact: Cheng Huiqiang
Address：No. 333, Jinxian Road, Jinjiaba, FENHU Town, Wujiang District, Suzhou City, Jiangsu Province
一分彩Structure of heat shrinkable tape and heat shrinkable sleeve-anticorrosive tape manufacturer
Generally, the heat shrinkable tape and heat shrinkable sleeve used in domestic repairs are 3PE structures. So what is the 3PE structure, let's introduce it today. 3PE heat shrinkable tape and heat shrinkable sleeve are actually composed of 3 layers, which are solvent-free epoxy primers painted on the surface of steel pipes; hot melt adhesive coated on the inner surface of heat shrinkable tape and heat shrinkable sleeve; Layer of radiation-crosslinked polyethylene substrate.
一分彩 The first is radiation-crosslinked polyethylene substrate. After radiation cross-linking, the performance of polyethylene has been greatly improved. Its main function is to provide mechanical protection, to resist soil stress and some slight friction, and to prevent corrosion. The three-layer structure polyethylene anticorrosive layer combines the excellent properties of epoxy coating and extruded polyethylene anticorrosive layer, and combines the interface characteristics and chemical resistance of epoxy coating with the mechanical protection characteristics of extruded polyethylene anticorrosive layer. Combined to significantly improve their respective performance.
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The second is the hot-melt adhesive applied on the surface of the substrate. Part of the performance group of the hot melt adhesive and the epoxy group of the epoxy primer can react to form hydrogen bonds or chemical bonds, so that the intermediate layer and the primer layer form a good bond; while some non-polar ethylene and the top layer polyethylene Has good affinity, so the middle layer and the surface layer also have good adhesion properties. That is to say, hot-melt adhesive plays a role of bonding and sealing, which can make the substrate and the surface of the steel tube coated with the primer well adhere together.
一分彩 Solvent-free epoxy primer. It is painted on the surface of the treated steel pipe. Some customers think that it doesn't matter if the primer is not applied. In fact, it is wrong. The solvent-free epoxy primer that is applied to the surface of the steel pipe is really anti-corrosive. The film formed after painting is directly adhered to the surface of the steel pipe. It has good chemical resistance and anti-cathode peeling performance. It reacts with the active group of the intermediate layer adhesive to form a chemical bond, ensuring that the overall anticorrosive layer has good adhesion at higher temperatures. A good primer has good resistance to cathodic peeling, that is, when we perform a cathodic peel test on the patch after baking the heat shrinkable tape and the heat shrinkable sleeve, as long as the substrate is pulled , The primer will also be taken off, the opposite is not the case. If we use some unsecured products in order to save costs, we will lose a lot of money.
Contact: Cheng Huiqiang
|Contact : Li Cong|
|Address: No. 333, Jinxian Road, Jinjiaba, Wujiang District, Suzhou, Jiangsu|