Long-service life and high-viscosity building material self-adhered protective film

Abstract

The invention relates to a long-service life and high-viscosity building material self-adhered protective film. The long-service life and high-viscosity building material self-adhered protective film comprises a surface layer, an interlayer and an internal layer, wherein the surface layer comprises the following components in parts by weight: 100 parts of polyethylene, 2-4 parts of magnesium stearate, 1-2 parts of an antioxidant 1010, 1-3 parts of butyl p-hydroxybenzoate and 1-2 parts of microcrystalline wax; the interlayer comprises the following components in parts by weight: 100 parts of polyethylene, 1-3 parts of barium stearate, 1-2 parts of p-tert-butylphenol, 1-2 parts of tributyl citrate and 0.5-1 part of titanium dioxide; the internal layer comprises the following components in parts by weight: 100 parts of POE(polyolyaltha olfin), 2-4 parts of C9 petroleum resin, 3-5 parts of terpene resin, 1-2 parts of polyethylene wax, 0.5-1 part of ethylene bis stearamide and 10-15 parts of ethylene-propylene polymer. The formula is mild and free of residue, the compatibility among the three layers of structures is good, and the long-service life and high-viscosity building material self-adhered protective film is excellent in anti-tensile strength, anti-puncture strength, weather resistance, decay resistance and scratch resistance, and can maintain relatively high bonding strength and anti-stripping capacity for a long time.

Description

technical field [0001] The invention relates to a three-layer co-extruded self-adhesive film, in particular to a self-adhesive protective film for building materials with high durability and high viscosity. Background technique [0002] The three-layer co-extruded self-adhesive film seems to have only one layer of structure to the naked eye, but in fact it is formed by combining three layers. There are three flow channels in the film head of the three-layer co-extrusion casting machine, three The flow channel contains formula materials of different components, and the three-layer structure is combined when it reaches the film mouth and is blown out. The final self-adhesive film prepared is a transparent film that looks like one layer but is actually three layers. [0003] This kind of self-adhesive film has a wide range of applications. For example, this kind of self-adhesive protective film is covered on the glass curtain walls of many high-rise buildings, which can effecti...

AI Technical Summary

Problems solved by technology

However, it is not easy to composite membranes of three different materials into a seemingly one-layer structure.

In addition to the process involved, the formula of the three-layer material is also crucial. If there is a flaw in the compatibility between the formulas, it will have a great impact on the performance of this self-adhesive film

Over the years, this formula has been mostly monopolized by foreign companies. The research in our country started relatively late, and there is a big gap with the world's first-class level in terms of performance indicators and cost control.

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