Pressure sensitive adhesive and preparation method thereof
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A pressure-sensitive adhesive and solvent technology, used in adhesives, adhesive additives, adhesive types, etc., can solve problems such as poor water resistance and low temperature resistance, achieve chemical atmospheric corrosion resistance, and improve high temperature resistance. , Improve the effect of light transmittance
Inactive Publication Date: 2015-10-28
NANTONG KANGERLE MEDICAL MATERIALS CO LTD
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Emulsion-type polyacrylate PSA has the advantages of good environmental protection, low cost and good adhesive performance, but its water resistance and low temperature resistance are not good, and solvent-type polyacrylate PSA can make up for the disadvantages of emulsion-type PSA. insufficient
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[0023] The present invention will be further described below in conjunction with embodiment:
[0024] Experimental raw materials:
[0025] 5-8 parts of butyl acrylate;
[0026] 1-2 parts of styrene;
[0027] 1-2 parts of methyl methacrylate;
[0028] 0.1-1 part of α-methacrylic acid;
[0029] Potassium persulfate 0.3-0.5 parts;
[0030] 4-15 parts of 2-butanone;
[0031] Chlorosulfonated polyethylene 1-5 parts;
[0032] Dioctyl phthalate 0.1-0.8 parts;
[0033] Preparation:
[0034] First add the above weight parts of butyl acrylate, styrene, methyl methacrylate, α-methacrylic acid, and 2-butanone into the mixing tank, and slowly heat up to 70°C-80°C while stirring; then add persulfuric acid Potassium, heat up to the reaction temperature and react for 2 hours; when the liquid in the barrel is colorless, transparent and viscous, cool down to room temperature, then add chlorosulfonated polyethylene and dioctyl phthalate to stir, mix for some time and filter out A pressu...
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Abstract
The invention discloses a pressure sensitive adhesive and a preparation method thereof. The pressure sensitive adhesive is composed of the following raw material components including, by weight, 5-8 parts of butyl acrylate, 1-2 parts of styrene, 1-2 parts of methyl methacrylate, 0.1-1 part of alpha-methacrylic acid, 0.3-0.5 part of potassium peroxodisulfate, 4-15 parts of 2-butanone, 1-5 parts of chlorosulphonated polyethylene and 0.1-0.8 part of dioctyl phthalate. The preparation method of the pressure sensitive adhesive comprises the steps that firstly, the butyl acrylate, the styrene, the methyl methacrylate, the alpha-methacrylic acid and the 2-butanone are added in a stirring barrel; secondly, the potassium peroxodisulfate is added, the temperature is increased to the reaction temperature, and reaction is performed for 2 h; thirdly, when liquid in the barrel is colorless, transparent and sticky, the liquid is cooled to the room temperature, then the chlorosulphonated polyethylene and the dioctyl phthalate are added, and after mixing is performed for several time, filtering and discharging are performed. The pressure sensitive adhesive is high in transparency and viscosity, easy to process and convenient to coat, and has the heat resistance and weather resistance; the light transmittance of light rays is improved, and the reliability of the product performance is guaranteed.
Description
technical field [0001] The invention relates to a pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] Pressure-sensitive adhesive (PSA) is an adhesive that can be firmly bonded to the adherend without resorting to solvents, heat or other means, and has been widely used in printing, packaging, medical, manufacturing and Household appliances and many other fields. Acrylic pressure-sensitive adhesives are currently the fastest-growing and most promising type of pressure-sensitive adhesives, which mainly include emulsion type and solvent type. Emulsion-type polyacrylate PSA has the advantages of good environmental protection, low cost and good adhesive performance, but its water resistance and low temperature resistance are not good, and solvent-type polyacrylate PSA can make up for the disadvantages of emulsion-type PSA. insufficient. Contents of the invention [0003] The purpose of the present invention is to provide a product with...
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