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Preparation method for organic silicon hydrophobic membrane
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A technology of organic silicon and hydrophobic film, which is applied in the field of preparation of organic silicon hydrophobic film, can solve the problems of poor water resistance, softening and deformation, affecting product quality, etc., and achieve the effect of improving mechanical stability, quality and dispersion uniformity
Inactive Publication Date: 2018-10-30
合肥拖油瓶信息科技有限公司
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[0004] At present, most polypropylene cast film materials are reusable materials, and in order to keep the materials clean, they need to be washed frequently. However, the film materials currently available on the market have poor water resistance, and they are prone to softening and deformation after long-term immersion, which is extremely difficult. Greatly affected the product quality
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Embodiment 1
[0017] A method for preparing an organosilicon hydrophobic film, comprising the following steps:
[0018] (1) Take 10 parts by weight of polymethylhydrogensiloxane, add it to 6 times the weight of absolute ethanol, stir evenly, raise the temperature to 60°C, add 120 parts by weight of polypropylene, and keep stirring for 1 hour , to remove ethanol by distillation to obtain organosilicon-modified polypropylene;
[0019] (2) Take the above-mentioned organosilicon-modified polypropylene, add it to dimethyl carbonate whose weight is 1.6 times, stir evenly, and obtain a polypropylene dispersion;
[0020] (3) Get 17 parts by weight of stearic acid and heat to soften, mix with 10 parts by weight of triethanolamine, send it into the reactor, add 1% p-toluenesulfonic acid of the mixture weight, feed nitrogen, adjust the reaction The temperature of the kettle is 166-180°C, and the reaction is stirred for 5 hours to obtain the ester amine;
[0021] (4) Take the above-mentioned ester am...
Embodiment 2
[0025] A method for preparing an organosilicon hydrophobic film, comprising the following steps:
[0026] (1) Take 15 parts by weight of polymethylhydrogen siloxane, add it to 10 times the weight of absolute ethanol, stir evenly, raise the temperature to 70°C, add 140 parts by weight of polypropylene, and keep stirring for 2 hours , to remove ethanol by distillation to obtain organosilicon-modified polypropylene;
[0027] (2) Take the above-mentioned organosilicon-modified polypropylene, add it to dimethyl carbonate whose weight is 2 times, and stir evenly to obtain a polypropylene dispersion;
[0028] (3) Get 20 parts by weight of stearic acid and heat to soften, mix with 13 parts by weight of triethanolamine, send it into the reactor, add 3% p-toluenesulfonic acid of the mixture weight, feed nitrogen, adjust the reaction The temperature of the kettle is 180°C, and the reaction is stirred for 6 hours to obtain the ester amine;
[0029] (4) Take the above-mentioned ester ami...
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technical field [0001] The invention belongs to the field of organic siliconhydrophobic membranes, and in particular relates to a preparation method of organic siliconhydrophobic membranes. Background technique [0002] Cast polypropylene film (CPP) is a non-stretched, non-oriented flat cast film produced by melt casting and quenching. Compared with blown film, it is characterized by fast production speed, high output, good film transparency, gloss, uniform thickness, and excellent balance of isotropic properties. At the same time, because it is a flat extruded film, subsequent processes such as printing and compounding are extremely convenient, so it is widely used in the packaging of textiles, flowers, food, and daily necessities. [0003] CPP is a polypropylene (PP) film produced by a cast extrusion process in the plastics industry. This type of film is different from BOPP (bidirectional polypropylene) film, which is a non-oriented film. Strictly speaking, CPP films ...
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