Polypropylene waterproof gas-permeable film

A technology of waterproof and breathable membrane and polypropylene, which is applied in the field of film, can solve the problems of restricting the development of waterproof and breathable membrane, poor tensile strength and elongation at break, and general mechanical properties of waterproof and breathable membrane, so as to improve the waterproof and breathable performance, improve Effects of lubricity and enhanced mechanical properties

Active Publication Date: 2020-02-21
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 gas-permeable film, which is prepared by carrying out a reaction on main raw materials comprising polypropylene, calcium carbonate and bentonite, glycerol ester of rosin and various auxiliary agents. According to the invention, a modifier is added into reactants and is used for modifying polypropylene, and modification comprises: carrying out a polymerization reaction at a temperature of 80-100 DEG C by using 4-fluorophthalic anhydride, diethylene glycol monoethyl ether and (1S,2S)-(+)-2-amino-1-(4-nitrophenyl)-1,3-propanediol as reactants; aregulating agent is added, is a mixture of 4,4'-diamino-2,2'-dinitrodiphenylmethane, dimethyl maleic anhydride and 1,2-epoxy-4-vinylcyclohexane, and can make the modifier be uniformly dispersed in polypropylene so as to substantially improve the modification effect of the modifier; and the finally prepared polypropylene waterproof gas-permeable film has characteristics of strong waterproof gas permeability, large moisture permeability, large tensile strength and large 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 Applications(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
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