Water-based acrylic emulsion for sealant and preparation method thereof
A water-based acrylic and sealant technology, used in adhesives, adhesive types, adhesive additives, etc., can solve problems such as high cost, complex preparation process, and no reports, and achieve excellent chemical resistance and high adhesion. , the effect of superior flexibility
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Embodiment 1
[0029] S1, the preparation of water-based acrylic emulsion, the raw material type and dosage of each component are shown in Table 1:
[0030] Table 1:
[0031]
[0032]
[0033]Preparation process: in parts by mass, weigh 15 parts of methyl acrylate, 25 parts of methyl methacrylate, 2 parts of acrylic acid, 2 parts of glycidyl methacrylate and 8 parts of dimethyl maleate, mix and stir evenly to prepare Mix the monomers for later use; add 0.75 parts of OP-9 and 0.75 parts of SDS emulsifier, 0.05 parts of sodium bicarbonate, 10% KPS and 45.6 parts of deionized water into the reactor, raise the temperature to 80 ° C, within 30 minutes Add 10% of the mixed monomer dropwise, stabilize for 15 minutes, and complete the dropwise addition of the remaining mixed monomer and initiator within 3 hours, raise the temperature to 85°C and mature for 1 hour, cool down to 60°C, and add 0.6 parts of neutralizer And, cooling and discharging after 30 minutes of heat preservation to obtain a...
Embodiment 2
[0045] S1, the preparation of water-based acrylic emulsion, the raw material type and dosage of each component are shown in Table 4:
[0046] Table 4:
[0047]
[0048] Preparation process: in parts by mass, weigh 20 parts of butyl acrylate, 20 parts of methyl methacrylate, 3 parts of acrylic acid, 4 parts of glycidyl methacrylate and 10 parts of dimethyl maleate, mix and stir evenly to prepare Mix the monomers for later use; add 0.5 parts of OP-9 and 0.5 parts of SR-10 emulsifiers, 0.1 parts of sodium bicarbonate, 10% ammonium persulfate and 40.8 parts of deionized water into the reactor, and heat up to 80 ° C. Add 10% of the mixed monomers dropwise within 30 minutes, stabilize for 15 minutes, complete the dropwise addition of the remaining mixed monomers and initiators within 3 hours, raise the temperature to 85°C and mature for 1 hour, cool down to 60°C, and add 0.6 parts Neutralize with a neutralizer, keep warm for 30 minutes, then cool down and discharge to obtain a w...
Embodiment 3
[0058] S1, the preparation of water-based acrylic emulsion, the raw material type and dosage of each component are shown in Table 7:
[0059] Table 7:
[0060]
[0061]
[0062] Preparation process: In terms of parts by mass, weigh 10 parts of methyl acrylate, 10 parts of butyl acrylate, 20 parts of methyl methacrylate, 3 parts of acrylic acid, 4 parts of glycidyl methacrylate and dibutyl maleate 10 parts were mixed and stirred evenly to prepare mixed monomers for later use; 0.5 parts of OP-9 and 0.5 parts of SR-10 emulsifier, 0.1 part of sodium bicarbonate, 10% ammonium persulfate and 40.8 parts of deionized water were added to the reaction kettle , raise the temperature to 80°C, add 10% of the mixed monomers dropwise within 30 minutes, stabilize for 15 minutes, complete the dropwise addition of the remaining mixed monomers and initiators within 3 hours, raise the temperature to 85°C and mature for 1 hour, and cool down to 60°C, add 0.6 parts of neutralizing agent to n...
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