Polyethylene is widely used in various types, with obvious advantages and wide application. But at the same time it is also a new type of material, everyone may not be familiar with it, then I will introduce the specifications and advantages of polyethylene adhesive tape today.

Polyethylene adhesive tape anti-corrosion system generally has: primer - anti-corrosion tape (inner tape) - protective tape (outer tape). The primer is made of butyl rubber and tackifying resin in an organic solvent to ensure good adhesion to steel pipes. The inner and outer belts are made of a polyethylene base film and a butyl rubber adhesive, which have good mechanical strength and adhesive sealing properties, and the butyl rubber also has a self-repairing function of self-melting bonding.

Decades of practical application experience has proven that polyethylene anti-corrosive tapes have the following performance advantages:

1. The polyethylene adhesive tape has sufficient adhesion to the steel pipe, and the peel strength is 18-30 N/cm. It can effectively prevent the liquid medium from infiltrating into the surface of the steel pipe and maintain high bonding strength after many years of burying.

2. Polyethylene adhesive tape has good elongation at break and ductility. It maintains its flexibility over a wide temperature range, and conventional products have an elongation at break of 150-500%. The polyethylene adhesive tape can be wound at -34 ° C and can be used at -40 ° C for a long time with an embrittlement temperature of -70 ° C.

3. Polyethylene adhesive tape has high strength and its tensile strength is 20 MPa or more. It can resist the general mechanical force during pipeline loading and unloading and soil resistance after burying. Due to its smooth surface, there is no displacement or delamination of the product's anti-corrosion layer when the tube is displaced from the soil after burying.

4. Polyethylene adhesive tape anti-corrosion layer has good anti-cathode peeling performance. Adhesive tape anti-corrosion pipe has a reliable protection potential and a stable protection current.

5. Polyethylene adhesive with high electrical insulation and low water absorption and water vapor permeability. Its water absorption rate is less than 0.02%, and its electric breakdown strength is more than 40 kv/mm.