What are the properties of polyethylene jacket primer?

Jacket primer is a kind of product in the national plastic polyethylene anticorrosive layer adhesive, which is mainly used for anti-corrosion adhesive of buried steel pipe polyethylene coating (2PE jacket anti-corrosion). It is a hot melt adhesive mixed with butyl rubber and copolymer. The manufacturing standards follow the specifications, and the adhesive and sealing properties of the jacket primer are excellent, as well as the aging resistance.

It provides excellent anti-corrosion effect for oil and gas and chemical pipelines. It is prefabricated by dip coating process, which is less investment in equipment and easy to operate. Due to the existence of butyl rubber, it has excellent hydrophobicity and impermeability, and the adhesive strength is also increased, and the sealing is strong, which can effectively prevent the invasion of various corrosive media.

Due to the blending of EVA, the strength and heat aging properties of the adhesive and the compatibility with the polyethylene layer are increased, which can effectively prevent delamination and cracking of the polyethylene layer due to various factors. The product fills the viscoelasticity and self-healing of similar adhesives, and the product also has the characteristics of easy melting, easy construction, low melt viscosity and uniform coating, and some technical indicators are better than similar products of other domestic manufacturers.

HRG jacket primer is a butyl rubber type hot melt adhesive, which is an indispensable special anti-corrosion material for the polyethylene coating of buried steel pipes (jacket anti-corrosion). High bond strength; Good sealing performance. Due to the presence of butyl rubber, HRG rubber has good hydrophobicity and air impermeability, which can effectively prevent the erosion of steel pipes by corrosive media.

Good heat aging properties. The HRG primer was aged in 100 air for 100 days, and the peel strength was still above, and after 44 months of buried operation, the on-site glass strength was still above. Strong self-healing ability.

After being stabbed from the outside, it can heal automatically without leaving pinholes. Unique viscoelastic properties. In the service temperature range, it can automatically relieve or eliminate the stress caused by various factors between the polyethylene layer and the pipe body, so as to prevent the stress cracking of the polyethylene layer.

It has good construction performance. It is easy to melt, the melt viscosity is low, the coating is uniform, and the thickness is easy to control.

Jacket glue: jacket adhesive is a common anti-corrosion adhesive used for the outer surface of steel pipelines for oil transportation, gas transportation, water supply and drainage, and is a single product in the "polyethylene anti-corrosion layer adhesive", which is a special adhesive for steel pipes coated with polyethylene anti-corrosion layer (jacket anti-corrosion process). There are two types of jacket glue, the type is commonly used at room temperature, and the type is low temperature performance, which is suitable for winter and cold areas.

The colors are black, cream, gray, green, and pure yellow. Jacket adhesive characteristics: due to the existence of butyl rubber, it has excellent hydrophobicity and impermeability, and the adhesive strength is also increased, and the sealing is strong, which can effectively prevent the invasion of various corrosive media; Due to the mixing of EVA, the strength and heat aging performance of the adhesive and the compatibility with the polyethylene layer are increased, which can effectively prevent the cracking of the polyethylene layer due to stress caused by various factors; Jacket adhesive has viscoelasticity and self-healing, and the product also has the characteristics of easy melting, easy application, low melt viscosity, and uniform coating.

Usage process: The jacket glue is coated by dip coating: the solid glue block is melted in an electrically heated melter.

The temperature is set at 160-200 (open flame can also be used to heat the melter) and stir to make the glue block in the melting process fully stirred. Avoid glue aging and coke caused by high local temperature; Move the melted glue to the glue applicator (the glue applicator should have a heating function or heat preservation effect), so that the glue is kept at about 160; The steel pipe preheated to 70 90 passes through the rubber scraper ring that has been adjusted, so that the molten glue is evenly coated to the outer wall of the steel pipe; The thickness and uniformity of the adhesive layer are closely related to the pore size, elasticity and temperature of the melted adhesive controlled by the squeegee ring.

2PE pipeline anticorrosive jacket primer, also known as anticorrosive hot melt adhesive, is a product in the adhesive of the anticorrosive layer of polyethylene vertical leather, which is mainly used as an anticorrosive adhesive for buried steel pipeline polyethylene coating (2PE jacket anticorrosive). It is a hot melt adhesive mixed with butyl rubber and copolymer. The standard grip of the manufacture follows the requirements of the specifications, and the adhesion and sealing of the jacket primer and the aging resistance are excellent.

It provides excellent anti-corrosion effect for oil and gas and chemical pipelines. It is prefabricated by dip coating process, which is less investment in equipment and easy to operate. The product has been used in China for nearly 20 years, won the trust of users, and has become the preferred manufacturer of pipeline anticorrosive adhesive jacket primer for 2PE anti-corrosion projects.

Product characteristics: Due to the existence of butyl rubber, the product has excellent hydrophobicity and air impermeability, and the adhesive strength is also increased, which can effectively prevent the intrusion of various corrosive media. Due to the mixing of copolymer EVA, the strength of the adhesive is increased, and the compatibility with the polyethylene layer is increased, which can effectively prevent the delamination and cracking of the polyethylene layer due to various factors.

The product fills the viscoelastic and self-healing properties of similar adhesives. It also has the characteristics of easy melting, easy application, low melt viscosity and uniform coating.