Hydrophobic vehicle film and preparation method thereof
A water car and film technology, applied in the field of hydrophobic car film and its preparation, can solve the problems of poor durability, low transparency, poor hydrophobic effect, etc., and achieve the effects of improving light transmittance, improving transparency, and excellent hydrophobic performance.
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preparation example Construction
[0024] A kind of preparation method of hydrophobic automobile film provided by the invention comprises the following steps:
[0025] Step 1: Add tetraethyl orthosilicate and silane coupling agent to n-propanol and stir for 20~30min, then add hexamethyldisilazane and continue stirring for 20~30min, then add deionized water dropwise, and place Stir and react in a water bath at 35~45°C for 4~12 hours to obtain a mixed solution containing silica nanoparticles, wherein the mass ratio of n-propanol, tetraethyl silicate and silane coupling agent is 80~100:3~ 5:0.2, the amount of deionized water is 10% of the mass of n-propanol;
[0026] Step 2: Add zein equivalent to 10-12% of the mass of the ethanol solution to an ethanol solution with a volume concentration of 96-98% and stir for 20-30 minutes to obtain the first zein solution; Adding zein equivalent to 1-3% of the mass of the ethanol solution into the ~70% ethanol solution and stirring for 10-20 minutes to obtain a second zein so...
preparation example 1
[0043] Preparation example 1 (preparation of adhesive of the present invention)
[0044] The adhesive is composed of the following components by mass percentage: 10% ethanol solution with a volume concentration of 70%, 32% ethyl acetate, 20% ethyl acrylate, 18% zein, and 12% methyl acrylate , methacrylic acid 5%, aminosilane coupling agent 2%, hydroxystearic acid 0.5%, benzoyl peroxide 0.3% and lauryl mercaptan 0.2%;
[0045] The adhesive is prepared by the following preparation method: adding zein protein (zein protein) to an ethanol solution with a volume concentration of 70% (volume concentration of ethanol is 50%), and placed in a water bath environment at 40°C Stirring in the medium for 15min, the first mixture is obtained; ethyl acrylate, methyl acrylate, methacrylic acid, dodecyl mercaptan and benzoyl peroxide are mixed into the second mixture; The second mixture is mixed with ethyl acetate accounting for 2 / 3 of the total mass of ethyl acetate to form a reaction system...
Embodiment 1
[0047] A preparation method of a hydrophobic car film, comprising the following steps:
[0048] Step 1: Add tetraethyl orthosilicate and silane coupling agent to n-propanol and stir for 20 minutes, then add hexamethyldisilazane and continue stirring for 20 minutes, then add deionized water dropwise, and then place in a water bath at 35°C The reaction was stirred for 4 hours to obtain a mixed solution containing silica nanoparticles (particle size: 42nm), wherein the mass ratio of n-propanol, tetraethyl orthosilicate and silane coupling agent was 80:3:0.2, deionized The consumption of water is 10% of n-propanol quality;
[0049] Step 2: Add zein equivalent to 10% of the mass of the ethanol solution to an ethanol solution with a volume concentration of 96% and stir for 20 minutes to obtain the first zein solution; add to an ethanol solution with a volume concentration of 60% Zein equivalent to 1% of the mass of the ethanol solution and stirred for 10 minutes to obtain a second ...
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Abstract
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