Zero halogen flame resistance polyethylene breathable film and preparation method and application thereof

Abstract

The invention discloses a zero halogen flame resistance polyethylene breathable film and a preparation method and an application thereof. The preparation method adopts surface modifier to treat calcium carbonate so as to promote the dispersion of calcium carbonate in a polyethylene resin system; then zero halogen fire retardant and polyethylene are treated by grafting treatment to have polar group and nonpolar macromolecular chain so that the dispersion of the zero halogen fire retardant in polyethylene is easier and the formed chemical bonds can effectively solve the problem that the mechanical properties of the breathable film are reduced; after the grafting treatment, the zero halogen fire retardant and the polyethylene both have the function of macromolecular coupling agent so as to further improve the dispersion of calcium carbonate in the polyethylene resin system and reduce the affect of calcium carbonate on the performance of the film. The zero halogen flame resistance polyethylene breathable film prepared by the invention not only ensures the gas permeability and mechanical properties of the polyethylene breathable film, but also improves the fire resistance of the film and does not affect the processing properties of the product. The product of the invention has both gas permeability and fire resistance, thus having wide application scope.

Description

technical field

[0001] The invention belongs to the technical field of plastic modification, and in particular relates to a halogen-free flame-retardant polyethylene gas permeable film and its preparation method and application. Background technique

[0002] Polyethylene plastic is currently the most commonly used packaging material. It has the advantages of non-toxicity, convenient processing and molding, low price, chemical corrosion resistance and light weight. At the same time, it has excellent flexibility and castability, so it can be made into a film.

[0003] Among them, polyethylene is commonly used to prepare gas-permeable membranes. The preparation method of air-permeable film is usually to mix polyethylene resin and certain quantity (such as 30~70wt%) inorganic filler, and extrude forming film from this blend; The surrounding area forms voids, resulting in a breathable membrane that allows the passage of gas, but not moisture. However, because the oxygen index o...

Images