Preparation method of chlorosulfonated polyethylene
A technology of chlorosulfonated polyethylene and polyethylene, applied in the direction of coating, can solve the problem of insufficient reaction, and achieve the effects of sufficient reaction, increased specific surface area, and stable product performance
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Embodiment 1
[0020] 10g polyethylene is crushed into 24 mesh size particles, add 20g of surfactant sodium dodecylbenzene sulfonate and 1000g of deionized water, activate under ultrasound for 30min, add 200g of swelling agent dibutyl phthalate to activate at room temperature For 48h, add 150g of the porogen n-heptane for further swelling for 48h. After the swelling is completed, it is filtered, the filter cake is washed with deionized water, and then vacuum dried at 80° C. to obtain porous polyethylene.
[0021] Add 10g of porous polyethylene into the reaction vessel, vent with nitrogen, heat and start stirring to raise the temperature to 120°C, after the polyethylene is completely dissolved, drip 15mL of chlorosulfonating agent sulfuryl chloride and 40mL of organic solvent chloroform into the reaction vessel Add the initiator azobisisobutyronitrile 0.01g and the catalytic promoter pyridine 0.001g, start heating the material, control the reaction temperature not to exceed 100°C, and react for ...
Embodiment 2
[0024] 10g polyethylene is crushed into 24 mesh size particles, add 30g of surfactant sodium dodecylbenzene sulfonate and 1000g of deionized water, activate under ultrasound for 30min, add 20g of swelling agent dibutyl phthalate to activate at room temperature After 24h, 150g of porogen n-octane was added for further swelling for 24h. After the swelling is completed, it is filtered, the filter cake is washed with deionized water, and then vacuum dried at 80° C. to obtain porous polyethylene.
[0025] Add 10g of porous polyethylene into the reaction vessel, vent with nitrogen, heat and start stirring to raise the temperature to 120°C, after the polyethylene is completely dissolved, drip 15mL of the chlorosulfonating agent sulfuryl chloride and the organic solvent chlorobenzene into the reaction vessel 40mL mixed solution, titration time is 2h, add 0.01g of initiator benzoyl peroxide and 0.001g of catalytic promoter pyridine, start heating the material, and control the reaction tem...
Embodiment 3
[0028] 10g polyethylene is crushed into 24 mesh size particles, 20g of surfactant sodium dodecylbenzene sulfonate and 1000g of deionized water are added, after activation under ultrasound for 30 minutes, 20g of swelling agent dibutyl phthalate is added to activate at room temperature 36h, then add 25g of porogen cyclohexane for further swelling for 36h. After the swelling is completed, it is filtered, the filter cake is washed with deionized water, and then vacuum dried at 80° C. to obtain porous polyethylene.
[0029] Add 10g of porous polyethylene into the reaction vessel, vent with nitrogen, heat and start stirring to raise the temperature to 120°C, after the polyethylene is completely dissolved, drip 15mL of chlorosulfonating agent sulfuryl chloride and 40mL of organic solvent chloroform into the reaction vessel The titration time is 3h. Add the initiator azobisisobutyronitrile 0.01g and the catalytic promoter pyridine 0.001g, start heating the material, control the reaction ...
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