Contact: Cheng Huiqiang
Address：No. 333, Jinxian Road, Jinjiaba, FENHU Town, Wujiang District, Suzhou City, Jiangsu Province
Anti-corrosive tape manufacturer introduces heat shrinkable sleeve (belt) anti-corrosive material
The base material of the heat shrinkable sleeve (belt) is radiation cross-linked polyethylene. After the base material is stretched, the plastic molecular chain is straightened along the stretching direction, and this deformation is fixed in the production, but the molecular structure has the original Some states (agglomerated states of molecular chains) tend to, when heated, the molecular chains gain energy, return from the straightened state to the random free chain state, and the material completes the contraction in the original stretching direction (some people call this "memory effect"). In order to make the formed anticorrosive layer tightly adhere to the surface of the steel pipe, the inner surface of the substrate must be coated with an adhesive. The inner primer is a compound of rubber-based hot-melt adhesives, such as vinyl acetate. When heated, the primer melts, the substrate shrinks, and the heat shrink sleeve (band) is tightly wrapped and bonded to the surface of the steel pipe.
一分彩The heat-shrinkable anticorrosive material in the shape of a sleeve can be called a heat-shrinkable sleeve, and the heat-shrinkable tape formed by wrapping a cigarette or spirally wound on a steel pipe is called a heat-shrinkable tape. The heat-shrinkable sleeve and the heat-shrinkable tape are substantially complete. same. Heat shrinkable sleeves are mainly used for repairing pipeline anticorrosive coatings. There are also special shapes of heat shrinkable sleeves, such as anticorrosive caps for the ends of insulation pipes, tees and even flanges. Heat shrinkable sleeves are more used for Elbow anticorrosion, small pipeline anticorrosion, and pipeline anticorrosion layer renewal, although they can also be used for mending, they are not as practical and economical as heat shrink sleeves.
一分彩The anticorrosive heat of the traditional heat shrinkable sleeve (belt) is close to 2PLE, which is better than polyethylene adhesive tape. With the advent of 3LPE anticorrosive coating technology, the technology of heat shrinkable anticorrosive materials has further developed. Because of the new heat shrinkable anticorrosive material anticorrosion technology of the coating epoxy coating as a primer, it has been widely used. It is said that the use of liquid epoxy coatings has two effects, one is to improve the adhesion between the heat shrinkable sleeve (belt) and the surface of the steel pipe, and the other is to protect the bottom layer from corrosion. Therefore, it is required that the liquid coating can be cured quickly and be compatible with The primer of the heat shrinkable sleeve (band) produces a chemical reaction bond.
一分彩In addition to the heat received by the sleeve, there is also a kind of anticorrosive material called self-receiving tape, which is usually caused by solvent volatilization to shrink the tape. This anti-corrosion tape is immersed in a solvent (or soaked under stretching conditions), absorbs the solvent and swells and stretches. The finished product is sealed and packed in a solvent-resistant plastic bag. When in use, the sealing material of the anti-corrosion tape is removed and cold-wrapped. On the protected pipe, the anti-corrosion tape shrinks and forms after the solvent evaporates. The advantage of self-shrinking anticorrosive material is that it does not move, but the amount is small, because the use of heat shrinkable anticorrosive material is more hygienic and the anticorrosive performance is more reliable. Anticorrosive tape
Contact: Cheng Huiqiang
|Contact : Li Cong|
|Address: No. 333, Jinxian Road, Jinjiaba, Wujiang District, Suzhou, Jiangsu|