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A kind of polypropylene waterproof breathable film

A waterproof breathable membrane, polypropylene technology, applied in the field of film, can solve the problems of poor tensile strength and elongation at break, general mechanical properties of waterproof breathable membrane, restricting the development of waterproof breathable membrane, etc., to achieve high tensile strength and fracture The effect of elongation, high moisture permeability, strong waterproof and breathable

Active Publication Date: 2022-02-15
湖北联利非织造布技术创新中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of waterproof and breathable membranes currently on the market are very general, especially the poor tensile strength and elongation at break, which can no longer meet the needs of normal production and life, which greatly limits the development of waterproof and breathable membranes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Prepare modifier, comprises the following steps:

[0036] Step 1: Add 4g of 4-fluorophthalic anhydride into a reaction vessel containing 30ml of acetone and stir to mix, and after mixing evenly, a mixed solution is formed;

[0037] Step 2: Add 5g of diethylene glycol ethyl ether and 1g of (1S, 2S)-(+)-2-amino-1-(4-nitrophenyl)-1,3-propanediol in turn to the mixture and stir to mix After mixing evenly, raise the temperature of the mixed solution to 90° C. for reaction, and the reaction time is 5 hours; after the reaction, acetone is removed by rotary evaporation to obtain a modifier.

Embodiment 2

[0039] A polypropylene waterproof breathable membrane, comprising the following components by weight:

[0040] 75 parts of polypropylene;

[0041] Calcium carbonate 15 parts

[0042] 10 parts bentonite

[0043] Rosin glyceride 3 parts;

[0044] 2 parts of coupling agent;

[0045] Regulator 2 parts;

[0046] 1 part modifier;

[0047] 1 part plasticizer;

[0048] Antioxidant 1 part.

[0049] Described modifying agent is made by embodiment 1.

[0050] The regulator is 4,4'-diamino-2,2'-dinitrodiphenylmethane, dimethylmaleic anhydride and 1,2-epoxy-4-vinylcyclohexane The mixture has a mass ratio of 1:1:1.

[0051] The coupling agent is a mixture of (1-fluoroethylene)methyldiphenylsilane and vinyl-tris(2-methoxyethoxy)silane, the mass ratio of which is 1:2.

[0052] The plasticizer is dioctyl phthalate.

[0053] The antioxidant is ethylene bis-tetrabromophthalimide.

[0054] The preparation method of described polypropylene waterproof gas-permeable film, comprises the f...

Embodiment 3

[0060] A polypropylene waterproof breathable membrane, comprising the following components by weight:

[0061] 75 parts of polypropylene;

[0062] Calcium carbonate 13 parts

[0063] 12 parts bentonite

[0064] Rosin glyceride 3 parts;

[0065] 2 parts of coupling agent;

[0066] Regulator 2 parts;

[0067]1 part modifier;

[0068] 1 part plasticizer;

[0069] Antioxidant 1 part.

[0070] Described modifying agent is made by embodiment 1.

[0071] The regulator is 4,4'-diamino-2,2'-dinitrodiphenylmethane, dimethylmaleic anhydride and 1,2-epoxy-4-vinylcyclohexane The mixture has a mass ratio of 1:1:1.

[0072] The coupling agent is a mixture of (1-fluoroethylene)methyldiphenylsilane and vinyl-tris(2-methoxyethoxy)silane, the mass ratio of which is 1:2.

[0073] The plasticizer is dioctyl phthalate.

[0074] The antioxidant is ethylene bis-tetrabromophthalimide.

[0075] The preparation method of described polypropylene waterproof gas-permeable film, comprises the fo...

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PUM

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Abstract

The invention discloses a polypropylene waterproof and air-permeable membrane, which is prepared by taking polypropylene, calcium carbonate and bentonite as main raw materials, and adding rosin glyceride and various auxiliary agents to react at the same time; The modifier is used to modify polypropylene. The modification is based on 4-fluorophthalic anhydride, diethylene glycol ethyl ether and (1S, 2S)-(+)-2-amino-1-(4 -Nitrophenyl)-1,3-propanediol as reactant, under the condition of temperature 80-100°C, it is formed by polymerization reaction; a regulator is also added, the regulator is 4,4'-diamino- Mixture of 2,2'-dinitrodiphenylmethane, dimethylmaleic anhydride and 1,2-epoxy-4-vinylcyclohexane, regulator enables the modification of the modifier in polypropylene The dispersion is more uniform, which greatly improves the modification effect of the modifier. The finally prepared polypropylene waterproof and breathable membrane not only has strong waterproof and breathable properties, but also has a large moisture permeability, and also has a relatively high tensile strength and elongation at break.

Description

technical field [0001] The invention relates to a film, more specifically to a polypropylene waterproof and breathable film. Background technique [0002] The waterproof and breathable membrane is a new type of polymer waterproof material, which can effectively prevent water from passing through and allow gas to pass through. Waterproof and breathable membranes have a very wide range of applications, and are mainly used in construction, electronics, chemical and medical equipment, and food packaging. The market space is broad and the demand is strong. However, the mechanical properties of waterproof and breathable membranes currently on the market are very general, especially the tensile strength and elongation at break are poor, which can no longer meet the needs of normal production and life, which greatly limits the development of waterproof and breathable membranes. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the object of the prese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L93/04C08L67/02C08K13/02C08K3/26C08K3/34C08K5/32C08K5/1539C08K5/1515C08K5/5425C08J5/18
CPCC08J5/18C08K2201/014C08J2323/12C08J2493/04C08J2467/02C08K13/02C08K2003/265C08K3/346C08K5/32C08K5/1539C08K5/1515C08K5/5425C08K5/5406
Inventor 刘建平刘子赫陈荣丰宋霞
Owner 湖北联利非织造布技术创新中心有限公司