Joint mixture preparation method
A technology of caulking and stirring and mixing, which is applied in the direction of adhesives, adhesive types, adhesive additives, etc., can solve the problems of poor cohesiveness of caulking agents, rainwater leakage, easy drying shrinkage, etc., and achieve high compressive strength, Improved curing performance and increased hardness
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[0016] A preparation method for a caulking agent, comprising the steps of:
[0017] (1) Take polyethylene glycol 4000 and add dichloromethane at a mass ratio of 1:10~13, then add triethylamine with a mass of 3~6% of dichloromethane, and add triethylamine with a mass of 80% at -4~-1°C ~90% bromoacetyl bromide, heat up to 20~25°C, stir and mix for 36~48h, rotate to evaporate, filter, take the filtrate and add petroleum ether at a mass ratio of 1:5~8, and stand at 0~3°C for 12~15h, Take the precipitate and add deionized water at a mass ratio of 1:8~10, stir and mix for 20~30min, adjust the pH to 7~8, extract with dichloromethane, and take the extract;
[0018] (2) In parts by mass, take 30~40 parts of extract, 12~16 parts of dimethylaminoethyl methacrylate, 1~3 parts of copper bromide, 1~3 parts of N,N,N',N Mix ',N''-pentamethyldiethylenetriamine to obtain a mixture, take the mixture and add tetrahydrofuran according to the mass ratio of 2~4:9~10, pass through nitrogen protectio...
Embodiment 1
[0023] Nano-kaolin: purchased from Shijiazhuang Jieyi New Energy Technology Co., Ltd.
[0024] A preparation method for a caulking agent, comprising the steps of:
[0025] (1) Take polyethylene glycol 4000 and add dichloromethane at a mass ratio of 1:10, then add triethylamine with 3% by mass of dichloromethane, add bromoacetyl bromide with 80% by mass of triethylamine at -4°C, and heat up Stir and mix at 20°C for 36 hours, rotary evaporate, filter, take the filtrate and add petroleum ether at a mass ratio of 1:5, let it stand at 0°C for 12 hours, take the precipitate and add deionized water at a mass ratio of 1:8, stir and mix for 20 minutes, and adjust the pH to 7. After extraction with dichloromethane, take the extract;
[0026] (2) In parts by mass, take 30 parts of extract, 12 parts of dimethylaminoethyl methacrylate, 1 part of copper bromide, 1 part of N,N,N',N',N''-pentamethyl Diethylenetriamine was mixed to obtain a mixture. Take the mixture and add tetrahydrofuran a...
Embodiment 2
[0031] Nano-kaolin: purchased from Shijiazhuang Jieyi New Energy Technology Co., Ltd.
[0032] A preparation method for a caulking agent, comprising the steps of:
[0033] (1) Take polyethylene glycol 4000 and add dichloromethane at a mass ratio of 1:13, then add triethylamine with 6% by mass of dichloromethane, add bromoacetyl bromide with 90% by mass of triethylamine at -1°C, and heat up Stir and mix at 25°C for 48 hours, rotary evaporate, filter, take the filtrate and add petroleum ether at a mass ratio of 1:8, let it stand at 3°C for 15 hours, take the precipitate and add deionized water at a mass ratio of 1:10, stir and mix for 30 minutes, and adjust the pH to 8, after dichloromethane extraction, take the extract;
[0034] (2) In parts by mass, take 40 parts of extract, 16 parts of dimethylaminoethyl methacrylate, 3 parts of copper bromide, 3 parts of N,N,N',N',N''-pentamethyl Diethylenetriamine was mixed to obtain a mixture. Take the mixture and add tetrahydrofuran a...
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