Process for water-phase suspension ultraviolet preparing chlorinated polyvinyl chloride
A chlorinated polyvinyl chloride and water-phase suspension technology, which is applied in the field of ultraviolet light preparation of chlorinated polyvinyl chloride in water-phase suspension, can solve the problems of environmental pollution, high production cost, narrow application range, etc., and achieves stable process control, Low production cost and versatile effects
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example 1
[0013] Install a UV lamp with a power of 1000W in a reactor with a volume of 5000L, fill the reactor with 800Kg of polyvinyl chloride resin, 3500Kg of water, and 6.5-7.5Kg of dispersant polysodium methacrylate, and control the reaction temperature at 80-85 ℃, the reaction pressure is 0.25-0.4Mpa, feed 480kg of chlorine gas into the reactor, turn on the ultraviolet light, react under the irradiation of ultraviolet light for 6 hours, turn off the ultraviolet light, the reaction is terminated, and then wash with water, neutralize and centrifuge And drying process, the obtained chlorine content is the extruded pipe type (J-700) chlorinated polyvinyl chloride of 66%.
example 2
[0015] Install a UV lamp with a power of 1000W in a reactor with a volume of 5000L, fill the reactor with 800Kg of polyvinyl chloride resin, 3500Kg of water, and 6.5-7.5Kg of dispersant polysodium methacrylate, and control the reaction temperature at 78-82 ℃, the reaction pressure is 0.2-0.4Mpa, feed 320Kg of chlorine gas into the reactor, turn on the ultraviolet light, react under the irradiation of ultraviolet light for 6 hours, turn off the ultraviolet light, the reaction is terminated, and then wash with water, neutralize and centrifuge And drying process, the obtained chlorine content is 63% injection pipe type (Z-500) chlorinated polyvinyl chloride.
example 3
[0017] Install a UV lamp with a power of 1000W in a reactor with a volume of 5000L, fill the reactor with 800Kg of polyvinyl chloride resin, 3500Kg of water, and 6.5-7.5Kg of dispersant polysodium methacrylate, and control the reaction temperature at 93-97 ℃, the reaction pressure is 0.2-0.4Mpa, feed 450Kg of chlorine gas into the reactor, turn on the ultraviolet light, react under the irradiation of ultraviolet light for 5.5 hours, turn off the ultraviolet light, the reaction is terminated, and then wash with water, neutralize and centrifuge And drying process, the obtained chlorine content is 65% adhesive type (N-500) chlorinated polyvinyl chloride.
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