Thermoplastic polyurethane film and preparing method thereof

The technology of thermoplastic polyurethane and plastic polyurethane is applied in the field of waterproof and moisture-permeable thermoplastic polyurethane film and its preparation, which can solve the problems of poor corrosion resistance and weather resistance, and achieve good corrosion resistance and weather resistance, and good waterproof and moisture permeability. Effect

Inactive Publication Date: 2016-09-07
WUXI JIABANG ELECTRIC POWER PIPE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of poor corrosion resistance and weather resistance of existing waterproof and moisture-permeable thermoplasti

Method used

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  • Thermoplastic polyurethane film and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, select the raw materials for the preparation of thermoplastic polyurethane film: 83 parts of thermoplastic polyurethane, 9 parts of smooth agent and 8 parts of fogging agent; wherein, 45 parts of polytetramethylene ether glycol, 27 parts of composite diisocyanate (the It is a composition of toluene diisocyanate and isophorone diisocyanate, the mass ratio of toluene diisocyanate and isophorone diisocyanate is 1:3), 6 parts of ethylene glycol ethyl ether acetate and 2 parts of dibutyltin diacetate And 7 parts of styrene-acrylonitrile-glycidyl methacrylate;

[0023] Then, the above-mentioned raw materials are stirred evenly in the feed bucket;

[0024] Then, dry through a dehumidifier to control the moisture content of the above-mentioned raw materials to be less than or equal to 0.02%;

[0025] Next, after being plasticized by the screw of the extruder, it is extruded through the die opening; the temperature of the screw of the extruder is controlled in five stage...

Embodiment 2

[0029] First, select the raw materials for preparing thermoplastic polyurethane film: 80 parts of thermoplastic polyurethane, 8 parts of smoothing agent and 7 parts of fogging agent; wherein, 40 parts of polytetramethylene ether glycol, 25 parts of composite diisocyanate (the It is a composition of toluene diisocyanate and isophorone diisocyanate, the mass ratio of toluene diisocyanate and isophorone diisocyanate is 1:2), 5 parts of ethylene glycol ethyl ether acetate and 1 part of dibutyltin diacetate And 5 parts of styrene-acrylonitrile-glycidyl methacrylate;

[0030] Then, the above-mentioned raw materials are stirred evenly in the feed bucket;

[0031] Then, dry through a dehumidifier to control the moisture content of the above-mentioned raw materials to be less than or equal to 0.02%;

[0032] Next, after being plasticized by the screw of the extruder, it is extruded through the die opening; the temperature of the screw of the extruder is controlled in five stages durin...

Embodiment 3

[0036] Except that the preparation raw materials of thermoplastic polyurethane film are 85 parts of thermoplastic polyurethane, 10 parts of slippery agent and 10 parts of fogging agent; wherein, 50 parts of polytetramethylene ether glycol, 30 parts of composite diisocyanate (it is toluene The composition of diisocyanate and isophorone diisocyanate, the mass ratio of toluene diisocyanate and isophorone diisocyanate is 1:4), 8 parts of ethylene glycol ethyl ether acetate and, 3 parts of dibutyltin diacetate and benzene Except for 8 parts of ethylene-acrylonitrile-glycidyl methacrylate, other preparation methods are the same as in Example 1.

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Abstract

The invention discloses a thermoplastic polyurethane film and a preparing method thereof. The thermoplastic polyurethane film is prepared from, by weight, 80-85 parts of thermoplastic polyurethane, 8-10 parts of slipping agent and 7-10 parts of matt agent. Thermoplastic polyurethane is prepared from 40-50 parts of polytetramethylene ether glycol, 25-30 parts of composite diisocyanate, 5-8 parts of ethylene glycol monoethyl ether acetate, 1-3 parts of dibutyltin diacetate and 5-8 parts of styrene-acrylonitrile-glycidyl methacrylate. By adding composite diisocyanate, regulating the ratio of components in composite diisocyanate, utilizing the synergistic effect of the two components and adding styrene-acrylonitrile-glycidyl methacrylate, the thermoplastic polyurethane film with high corrosion resistance and weather resistance is prepared.

Description

technical field [0001] The invention relates to the field of films, in particular to a waterproof and moisture-permeable thermoplastic polyurethane film and a preparation method thereof. Background technique [0002] In recent years, special work clothes made of polyvinyl chloride and neoprene used in harsh environments have the advantages of waterproof and imitation of liquid leakage, and are very popular. However, the sweat produced by the human body's own metabolism cannot be excreted in time, which makes people feel uncomfortable such as hot and cold. [0003] At present, with the advancement of technology, the main waterproof and moisture-permeable film materials are: microporous film and hydrophilic film. Among them, the microporous film is a very thin polymer film with a large number of small and connected micropores. In the microporous film, water droplets are bound in the holes and fixed by surface tension; the smaller the holes, The more external force is needed ...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L25/14C08G18/75C08G18/76
CPCC08L75/08C08G18/724C08G18/755C08G18/7614C08J5/18C08J2375/08C08J2425/14C08L2201/08C08L2203/16C08L25/14
Inventor 徐德生
Owner WUXI JIABANG ELECTRIC POWER PIPE FACTORY
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