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

A technology of flame-retardant polyethylene and breathable film, applied in the field of plastic modification, can solve problems such as droplet phenomenon, affecting pore formation, and low compatibility, so as to solve the problem of flame-retardant non-halogenation, meet applicable requirements, The effect of meeting production requirements

Active Publication Date: 2010-01-20
合诚技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the oxygen index of polyethylene is only 17.4, it is extremely flammable, and it has a droplet phenomenon when burning, which is easy to ignite other objects, thus limiting the application range of polyethylene breathable membranes.
[0004] At present, the breathable membranes on the market are not flame retardant
This is because when the flame retardant is directly added to the polyethylene resin and the inorganic filler, the compatibility of the flame retardant with the polyethylene resin and the inorganic filler is relatively low, which reduces the tensile strength of the film and affects the formation of pores. At the same time, after the film is formed, the flame retardant may penetrate into the surface of the film, which will eventually affect the performance and appearance of the film

Method used

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

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Experimental program
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Effect test

Embodiment 1

[0046] (1) Carry out surface coating treatment to calcium carbonate (particle diameter is 5.0 μ m) with surface modifier stearic acid in high-speed mixer and obtain coating calcium carbonate, the consumption of surface modifier is 2.0 of the total amount of calcium carbonate % (percentage by weight). The treatment process conditions are as follows: the rotation speed is 3000 rpm, the treatment temperature is 100° C., and the treatment time is 20 minutes.

[0047] (2) 70 parts by weight of linear low density polyethylene (its melt index is 1.0g / 10min and density is 0.915g / cm2) copolymerized with ethylene and octene (C8) 3 , molecular weight distribution is 3), 30 parts by weight of high pressure polyethylene (melt index is 2.0g / 10min, density is 0.920g / cm 3 ), 36 parts by weight of halogen-free flame retardant (density of 1.38, obtained by mixing MPP / PER / APP in a mass ratio of 6:6:24) and 0.5 parts by weight of maleic anhydride in 0.2 parts by weight of dicumyl peroxidation U...

Embodiment 2

[0050] (1) calcium carbonate (particle diameter is 0.5 μ m) is carried out surface coating treatment with surface modifier isopropyl tris (dioctyl phosphate acyloxy) titanate in high-speed mixer to obtain coated calcium carbonate, The amount of the surface modifier is 1.5% (percentage by weight) of the total amount of calcium carbonate. The treatment process conditions are as follows: the rotation speed is 3000 rpm, the treatment temperature is 90° C., and the treatment time is 30 minutes.

[0051] (2) 80 parts by weight of linear low density polyethylene (melt index is 4.0g / 10min, density is 0.918g / cm2) copolymerized with ethylene and hexene (C6) 3 , molecular weight distribution is 5), 20 parts by weight of high pressure polyethylene (melt index is 5.0g / 10min, density is 0.916g / cm 3 ), 40 parts by weight of a halogen-free flame retardant (density of 1.42, obtained by mixing MPP / PER / APP in a mass ratio of 6.7:6.7:26.6) and 0.2 parts by weight of maleic anhydride in 0.1 parts...

Embodiment 3

[0054] (1) Using the surface modifier isopropyl dioleic acid acyloxy (dioctyl phosphate acyloxy) titanate to perform surface coating treatment on calcium carbonate (particle size: 5.0 μm) in a high-speed mixer to obtain Coating calcium carbonate, the consumption of surface modifier is 0.5% (percentage by weight) of the total amount of calcium carbonate. The treatment process conditions are as follows: the rotation speed is 1500r / min, the treatment temperature is 130°C, and the treatment time is 10min.

[0055] (2) 90 parts by weight of linear low-density polyethylene copolymerized with ethylene and butene (C4) (its melt index is 8.0g / 10min, density is 0.925g / cm 3 , molecular weight distribution is 8), 20 parts by weight of high pressure polyethylene (melt index is 7.0g / 10min, density is 0.913g / cm 3 ), 44 parts by weight of halogen-free flame retardant (density of 1.52, obtained by mixing MPP / PER / APP in a mass ratio of 7.3:7.3:29.4) and 2 parts by weight of maleic anhydride in...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/06C08K13/06C08K9/04C08K3/32C08K5/053C08K5/3492B29C69/02B29C41/52B29C55/28B29C55/04B29B9/06B29C47/92B65D65/02B65D65/38B29C48/92
CPCB29C48/04
Inventor 周开德谢怀兴徐伟诸泉蒋文真
Owner 合诚技术股份有限公司
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