Preparation method for polyvinyl chloride resin used for flame-retardant cable
A polyvinyl chloride resin and flame-retardant cable technology, which is applied in the field of polyvinyl chloride resin preparation, can solve the problem of reducing the mechanical properties and flame-retardant properties of polyvinyl chloride cable materials, uneven dispersion of flame retardants, and failure to meet high flame-retardant requirements. Performance product application and other issues, to achieve the effect of good heat resistance, improved dispersion performance, and regular shape
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[0017] Example 1
[0018] Combine 14 kg of deionized water, 5 kg of vinyl chloride monomer, 5 g of initiator cumyl neodecanoate and diethylhexyl peroxydicarbonate, high alcoholysis polyvinyl alcohol / hydroxypropyl methylcellulose / Low alcoholysis polyvinyl alcohol ternary composite dispersant 7g, stabilizer organotin and liquid zinc 2.73g, new flame retardant 250g, ammonium bicarbonate 3.52g, chain extender triallyl cyanurate 4.5g Add 8.7g of EDTA and 8.7g of EDTA to the polymerization kettle, stir at room temperature for 30 minutes, heat up to 58±0.5°C for polymerization, react for 6 hours, reduce the pressure by 0.1MPa, add a terminator to terminate the polymerization, and obtain water for PVC resin for flame retardant cables suspension.
[0019] The unreacted monomer is removed, the material is discharged, filtered, and dried to obtain a PVC resin for flame-retardant cables.
[0020] The resin viscosity is 138, the apparent density is 0.54g / ml, the plasticizer absorption rate is ...
Example Embodiment
[0021] Example 2
[0022] Combine 14 kg of deionized water, 5 kg of vinyl chloride monomer, 5 g of initiator cumyl peroxy neodecanoate and diethylhexyl peroxydicarbonate, high alcoholysis degree polyvinyl alcohol / medium alcoholysis degree polyvinyl alcohol / Low alcoholysis polyvinyl alcohol ternary composite dispersant 7g, stabilizer organotin and liquid zinc 2.73g, new flame retardant 250g, ammonium bicarbonate 3.52g, chain extender triallyl cyanurate 4.5g Add 8.7g EDTA and 8.7g EDTA to the polymerization kettle, stir at room temperature for 30 minutes, heat up to 58±0.5℃ for polymerization, react for 6 hours, reduce the pressure by 0.1MPa, add a terminator to terminate the polymerization, and obtain the water of PVC resin for flame retardant cables suspension.
[0023] The unreacted monomer is removed, the material is discharged, filtered, and dried to obtain a PVC resin for flame-retardant cables.
[0024] The resin viscosity is 138, the apparent density is 0.52g / ml, the plastic...
Example Embodiment
[0025] Example 3
[0026] Combine 14 kg of deionized water, 5 kg of vinyl chloride monomer, 5 g of initiator cumyl neodecanoate and diethylhexyl peroxydicarbonate, high alcoholysis polyvinyl alcohol / hydroxypropyl methylcellulose / Low alcoholysis polyvinyl alcohol ternary composite dispersant 5g, stabilizer organotin and liquid zinc 2.73g, new flame retardant 250g, ammonium bicarbonate 3.52g, chain extender triallyl cyanurate 4.5g Add 8.7g EDTA and 8.7g EDTA to the polymerization kettle, stir at room temperature for 30 minutes, heat up to 58±0.5℃ for polymerization, react for 6 hours, reduce the pressure by 0.1MPa, add a terminator to terminate the polymerization, and obtain the water of PVC resin for flame retardant cables suspension.
[0027] The unreacted monomer is removed, the material is discharged, filtered, and dried to obtain a PVC resin for flame-retardant cables.
[0028] The resin viscosity is 138, the apparent density is 0.52g / ml, the plasticizer absorption rate is 26g / ...
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