Polyethylene anti-corrosion adhesive tape has gradually been used in gas steel pipelines as external anti-corrosion raw materials since the 1960s. It has a history of more than 40 years. Because of its high-quality anti-corrosion performance and convenient construction performance, it occupies a certain influence in the pipeline anti-corrosion and raw material management system. And because of the continuous improvement and promotion of China's polyethylene anticorrosive adhesive tape manufacturing enterprises, the types and quality of polyethylene adhesive tapes can achieve the characteristics of external anticorrosion of various buried pipelines, and improve the technical standards of anticorrosion. , And then make the main use of polyethylene anticorrosive adhesive tape continue to develop.

Polyethylene anticorrosive adhesive is divided into inner and outer tapes. The products have a variety of specifications and models. They can be generally used for pipeline anticorrosion. The products have many advantages.

The anticorrosion management system of polyethylene anticorrosive adhesive tape generally consists of topcoat-anticorrosion tape (inside)-maintenance tape (carrying). The topcoat is made of butyl rubber and tackifying epoxy resin through organic solution to ensure very good adhesion to seamless steel pipes. The inner carrier is composed of polyethylene wall solid and butyl rubber adhesive, which has very good impact toughness and adhesion and sealing performance, and butyl rubber also has the self-melting and self-repairing function.

Decades of specific application work experience has proved that polyethylene anticorrosive adhesive tape has the following performance advantages:

1. The polyethylene anticorrosive adhesive tape has sufficient adhesion to the seamless steel pipe, and the tensile strength is 18-30N/cm. It can reasonably prevent the liquid substance from penetrating into the surface of the seamless steel pipe, and can maintain a high adhesive compressive strength after being buried for many years.

2. Polyethylene anticorrosive adhesive tape has very good tensile strength and plasticity. It can maintain its flexibility in a wide temperature range, and the tensile strength of basic products is 150-500%. Polyethylene adhesive tape can be wound at -34℃, and can be used for a long time at -40℃, and its aging performance is -70℃.

3. Polyethylene anticorrosive adhesive tape has high compressive strength, and its compressive strength is above 20MPa. It can resist the general mechanical equipment force and the effect of resisting the ground stress of the soil layer after the pipeline is loaded and unloaded. Because the surface is smooth and clean, when the pipeline and the soil layer are offset after being buried, it is not easy to offset and delaminate the anticorrosive layer of the commodity.

4. Polyethylene anti-corrosion adhesive tape, the anti-corrosion layer has excellent anti-electrode separation performance. The adhesive tape anticorrosive pipeline has reliable maintenance potential difference and stable maintenance current.

5. Polyethylene anticorrosive adhesive tape has high electrical insulation performance, low water absorption capacity and moisture occupancy rate. Its water absorption is less than 0.02%, and its electric penetration compressive strength is more than 40kv/mm.