Silane coupling agent modified resin easy-peel environment friendly water-based pressure-sensitive adhesive
A technology of silane coupling agent and modified resin, which is applied in the field of pressure-sensitive adhesives, can solve the problems of low bonding strength and poor water resistance of water-based pressure-sensitive adhesives, and achieve low bonding strength, improve structural stability, and improve water resistance sexual effect
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Embodiment 1
[0024] 1) Dissolve 7g of polyvinyl alcohol, 0.9g of sodium dodecylsulfonate, and 1.8g of alkylphenol polyoxyethylene ether in 140mL of pure water, add sodium bicarbonate to adjust the pH to 5-6, then heat up to 50°C , add 105g butyl acrylate, 11g isooctyl acrylate, 5g hydroxypropyl acrylate, 1.6g acrylic acid, 30.4g vinyl acetate, 1.6g allyl trichlorosilane, 3.6g N-methylolacrylamide and 0.44g n- Dodecyl mercaptan, react at 60°C for 1 hour to obtain a pre-emulsion;
[0025] 2) Dissolve 0.44g of ammonium persulfate in 3.6mL of pure water, mix 25% of the pre-emulsion with 40% of the ammonium persulfate solution, heat up to 80°C, stir and reflux, and start adding the remaining pre-emulsion dropwise when the liquid turns blue. Emulsion, and add 20% ammonium persulfate solution every 1h, add dropwise within 3h, and finally add the remaining ammonium persulfate solution, and keep warm and reflux at 90°C for 1h;
[0026] 3) After cooling the above reaction solution to 40°C, add 4g o...
Embodiment 2
[0028] 1) Dissolve 7g of polyvinyl alcohol, 0.9g of sodium dodecylsulfonate, and 1.8g of alkylphenol polyoxyethylene ether in 140mL of pure water, add sodium bicarbonate to adjust the pH to 5-6, then heat up to 50°C , add 105g butyl acrylate, 11g isooctyl acrylate, 5g hydroxypropyl acrylate, 1.6g acrylic acid, 30.4g vinyl acetate, 1.6g vinyl tris(β-methoxyethoxy) silane, 3.6g N-hydroxy React methacrylamide with 0.44g of n-dodecylmercaptan at 62°C for 1 hour to obtain a pre-emulsion;
[0029] 2) Dissolve 0.44g of ammonium persulfate in 3.6mL of pure water, mix 25% of the pre-emulsion with 40% of the ammonium persulfate solution, heat up to 82°C, stir and reflux, and start adding the remaining pre-emulsion dropwise when the liquid turns blue. Emulsion, and add 20% ammonium persulfate solution every 1h, add dropwise within 3h, and finally add the remaining ammonium persulfate solution, and keep warm and reflux at 90°C for 1h;
[0030] 3) After cooling the above reaction solution...
Embodiment 3
[0032] 1) Dissolve 7g of polyvinyl alcohol, 0.9g of sodium dodecylsulfonate, and 1.8g of alkylphenol polyoxyethylene ether in 140mL of pure water, add sodium bicarbonate to adjust the pH to 5-6, then heat up to 50°C , add 105g butyl acrylate, 11g isooctyl acrylate, 5g hydroxypropyl acrylate, 1.6g acrylic acid, 30.4g vinyl acetate, 1.6g allyl trichlorosilane, 3.6g N-methylolacrylamide and 0.44g n- Dodecyl mercaptan, react at 60°C for 1 hour to obtain a pre-emulsion;
[0033] 2) Dissolve 0.44g of ammonium persulfate in 3.6mL of pure water, mix 25% of the pre-emulsion with 40% of the ammonium persulfate solution, heat up to 80°C, stir and reflux, and start adding the remaining pre-emulsion dropwise when the liquid turns blue. Emulsion, and add 20% ammonium persulfate solution every 1h, dropwise within 3h, and finally add the remaining ammonium persulfate solution, and keep warm and reflux at 90°C for 1.5h;
[0034] 3) After cooling the above reaction solution to 40°C, add the br...
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Abstract
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