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Polytetrafluoroethylene waterproof film and preparation method thereof

A polytetrafluoroethylene, waterproof film technology, applied in the field of waterproof film, can solve the problems of low impact strength, single function, short service life, etc., to improve surface strength and toughness, superior comprehensive performance, good surface toughness Effect

Inactive Publication Date: 2016-12-14
NINGBO TONGGUAN ELECTRIC AUTOMATION EQUIP
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, the functions of traditional waterproof and breathable membranes are relatively single, and some raw materials such as toxic plasticizers are added, which has poor environmental protection, and the scope of use of breathable membranes is small. Some have low impact strength and are easy to damage, and some have poor aging resistance. The service life is short, so it is particularly necessary to study higher performance waterproof membranes

Method used

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Embodiment Construction

[0017] A kind of polytetrafluoroethylene waterproof film, it is made up of the raw material of following weight part:

[0018] Mannitol 3, Butyl Acrylate 4, Dodecyltrimethylammonium Chloride 1, Polytetrafluoroethylene 100, Dodecafluoroheptylpropyltrimethoxysilane 0.5, Phosphate Cellulose 4, Diacetone Alcohol 3, Calcium palmitate 1, dialkyl hydrodiphenol 0.6, 2-mercaptobenzimidazole 0.7, β-hydroxyalkylamide 0.8, ammonium polyphosphate 2, azobisisobutyronitrile 0.1, dimethylformamide 80 , montmorillonite powder 5, lithium naphthenate 0.1.

[0019] A kind of preparation method of described polytetrafluoroethylene waterproof film, comprises the following steps:

[0020] (1) Add the above-mentioned cellulose phosphate to 27 times its weight in a 35% ethanol solution, heat and stir at 60°C for 30 minutes, add 2-mercaptobenzimidazole, and stir to normal temperature to obtain a fiber dispersion ;

[0021] (2) Add the above-mentioned dodecyltrimethylammonium chloride to 10 times its...

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Abstract

The invention discloses a polytetrafluoroethylene waterproof film. The polytetrafluoroethylene waterproof film is prepared from the following raw materials in parts by weight: 3-4 parts of mannitol, 4-6 parts of butyl acrylate, 1-2 parts of dodecyl trimethyl ammonium chloride, 100-130 parts of polytetrafluoroethylene, 0.5-2 parts of dodecafluoroheptyl propyltrimethoxysilane, 4-7 parts of phosphocellulose, 3-5 parts of diacetone alcohol, 1-2 parts of calcium palmitate, 0.6-1 part of dialkyl p-diphenol, 0.7-1 part of 2-thiolbenzimidazole, 0.8-1 part of beta-hydroxyalkylamide, 2-3 parts of ammonium polyphosphate, 0.1-0.2 part of azodiisobutyronitrile, 80-90 parts of dimethylformamide, 5-6 parts of montmorillonite powder and 0.1-0.2 part of lithium naphthenate. The film is high in water resistance, high in surface toughness and excellent in comprehensive performance.

Description

technical field [0001] The invention relates to the technical field of waterproof films, in particular to a polytetrafluoroethylene waterproof film and a preparation method thereof. Background technique [0002] PTFE anti-film is a synthetic polymer material that uses fluorine to replace all hydrogen atoms in polyethylene. This material is resistant to acid and alkali, and various organic solvents, and is almost insoluble in all solvents. At the same time, the waterproof and breathable membrane has the characteristics of high temperature resistance, and its friction coefficient is extremely low, so it can not only be used for lubrication, but also become an ideal coating for the inner layer of easy-clean wok and water pipes; [0003] Waterproof and breathable membranes are widely used in many industries: cars are commonly used in modern society, and different weather and road conditions will be encountered during transportation. Car lights are always exposed to the externa...

Claims

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Application Information

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IPC IPC(8): C08L27/18C08L33/08C08L1/16C08K13/06C08K9/04C08K9/06C08K3/34C08K5/378C08K3/32
CPCC08L27/18C08J5/18C08J2327/18C08J2401/16C08J2433/08C08L2203/16C08L2205/03C08L33/08C08L1/16C08K13/06C08K9/04C08K9/06C08K3/34C08K5/378C08K2003/323
Inventor 张立
Owner NINGBO TONGGUAN ELECTRIC AUTOMATION EQUIP
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