Waterproof air-permeable plastic film, and preparation method and application thereof

A waterproof, breathable and plastic film technology, applied in the chemical industry, can solve the problems of not being resistant to acid gas and liquid, poor waterproof performance, etc.

Active Publication Date: 2014-02-12
昆山威胜干燥剂研发中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, waterproof and breathable membranes have been widely used in various fields, mainly using nano-scale calci

Method used

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  • Waterproof air-permeable plastic film, and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 Waterproof and breathable plastic film and its preparation

[0028] The preparation method of described waterproof breathable plastic film, comprises the following steps:

[0029] 1) Mix polyethylene (PE) 1kg, thermoplastic elastomer (TPE) 1kg, filler bentonite powder 1.5kg, auxiliary material polymer wax 0.1kg, extrude and granulate at 200°C to make plastic particles with dry and breathable function.

[0030] 2) Extrude and cast the above plastic particles at 200°C to make a plastic film or sheet with a thickness of 15-20S.

[0031] 3) Stretch the above-mentioned plastic film or sheet on a (two-way or one-way) stretching machine for 3-7 times the area to make a breathable plastic film with high waterproof performance.

Embodiment 2

[0032] Embodiment 2 Waterproof and breathable plastic film and its preparation

[0033] The preparation method of described waterproof breathable plastic film, comprises the following steps:

[0034] 1) Mix 2kg of polypropylene (PP), 2kg of thermoplastic elastomer (TPE), 1kg of filler montmorillonite and titanium dioxide, and 0.1kg of modified poly-p-phenylene terephthalamide (PPA), at 150°C Extrusion granulation to make plastic particles with dry and breathable function.

[0035] 2) Extrude and cast the above plastic particles at 150°C to make a plastic film or sheet with a thickness of 15S.

[0036] 3) Stretch the above plastic film or sheet by 5 times area on a (two-way or one-way) stretching machine to make a breathable plastic film with high waterproof performance.

Embodiment 3

[0037] Embodiment 3 Waterproof and breathable plastic film and its preparation

[0038] The preparation method of described waterproof breathable plastic film, comprises the following steps:

[0039] 1) Polyethylene (PE) 2kg, polypropylene (PP) 2kg, thermoplastic elastomer (TPE) 2kg, filler montmorillonite, bentonite and titanium dioxide each 1kg, auxiliary materials polymer wax, modified polyterephthaloyl para Mix 0.1kg each of phenylenediamine (PPA) and calcium stearate, extrude and granulate at 250°C to make plastic particles with dry and breathable function.

[0040] 2) Extrude and cast the above plastic particles at 250°C to make a plastic film or sheet with a thickness of 15-20S.

[0041] 3) Stretch the above plastic film or sheet by 5 times area on a (two-way or one-way) stretching machine to make a breathable plastic film with high waterproof performance.

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Abstract

The invention provides a novel waterproof air-permeable plastic film which is prepared from the following raw materials in parts by weight: 40-80 parts of high-polymer plastic, 20-60 parts of filler and 1-5 parts of auxiliary material. The high-polymer plastic is selected from at least one of polyethylene, polypropylene, thermoplastic elastomer and the like; the filler is selected from at least one of smectite, bentonite and titanium white; and the auxiliary material is selected from at least one of high-polymer wax, modified poly-terephthaloyl p-phenylenediamine, calcium stearate and the like. Due to the adoption of the plastic film (biaxial or uniaxial) stretching technique, the natural mineral filler with special functions is added to the raw material formula of the waterproof air-permeable plastic film, so that the waterproof function of the air-permeable plastic film is greatly enhanced on the premise of not influencing the air permeability of the material.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a novel waterproof and breathable plastic film, its preparation method and application. Background technique [0002] With the development of the economy and the adjustment of the industrial structure, the market demand for plastic films in various industries continues to rise. Films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins used for packaging and as laminations. Plastic packaging and plastic packaging products are taking an increasing share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields, bringing great convenience to people's lives [0003] In recent years, waterproof and breathable membranes have been widely used in various fields, mainly using nano-scale calcium carbonate as raw material, which has defects such as poor waterproof performance an...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L101/00C08K3/34C08K3/22C08K5/098B32B27/12
CPCC08K2003/2241C08L23/06B32B27/12B32B2250/02C08J5/18C08J2300/00C08J2323/06C08J2323/12C08K3/346C08K5/098C08L23/12C08L101/00C08L2205/035C08L2207/04C08L91/06C08L77/10C08K3/34C08K13/02
Inventor 沈飞
Owner 昆山威胜干燥剂研发中心有限公司
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