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PVC flexibilizer and preparation method thereof

A technology of toughening agent and antioxidant, applied in the field of PVC toughening agent and its preparation, can solve the problems of high brittleness, poor toughness and strength, and high production cost of polyvinyl chloride film, and achieve a very small decrease in softening point, Improved strength and low cost

Pending Publication Date: 2022-02-18
JILONG PLASTIC PROD JIANGSU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a PVC toughening agent to solve the problems of high brittleness, poor toughness and strength, and high production cost of the produced polyvinyl chloride film produced by the traditional toughening agent used for polyvinyl chloride film processing. Toughener and its preparation method

Method used

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  • PVC flexibilizer and preparation method thereof
  • PVC flexibilizer and preparation method thereof
  • PVC flexibilizer and preparation method thereof

Examples

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preparation example Construction

[0027] A preparation method for PVC toughening agent, comprising the following steps:

[0028] Step S01: Pulverize for later use, weigh 30-50 parts of chlorinated polyethylene, 15-20 parts of polyacrylic acid resin and 8-10 parts of nano-scale calcium carbonate by weight, and send them into a pulverizer, and pulverize them into 0.2-0.5mm in diameter particle;

[0029] Step S02: mixing and stirring for the first time, sending the granular chlorinated polyethylene, polyacrylic acid resin and nano-scale calcium carbonate prepared in step S01 into a stirring tank for mixing, heating and stirring, the stirring speed is 200-400r / min, and the heating temperature 200-220°C;

[0030] Step S03: cooling down, cooling the mixture prepared in step S02 to normal temperature;

[0031] Step S04: Secondary mixing and stirring, continue to send the mixture prepared in step S03 into the stirring tank for heating and stirring, the stirring speed is 180-300r / min, the heating temperature is 180-2...

Embodiment 1

[0037] A PVC toughening agent, comprising the following components in parts by weight: 16 parts of chlorinated polyethylene, 30 parts of polyacrylic acid resin, 8 parts of nano calcium carbonate, 6 parts of ACR anti-impact agent, 4 parts of emulsifier, polyethylene 3 parts of alcohol, 2 parts of methyl acrylate, 1 part of paraffin, 2 parts of antioxidant, 3 parts of crosslinking agent, 3 parts of coupling agent.

[0038] Described emulsifier selects sodium alkylbenzene sulfonate for use. Described antioxidant selects antioxidant BHT for use. The crosslinking agent is any one of allyl phthalate, vinyltriethoxysilane or vinyltrimethoxysilane. The coupling agent is a titanate coupling agent.

[0039] A preparation method for PVC toughening agent, comprising the following steps:

[0040] Step S01: pulverize for later use, weigh 30 parts of chlorinated polyethylene, 15 parts of polyacrylic acid resin and 8 parts of nano-scale calcium carbonate by weight, send them into a pulveri...

Embodiment 2

[0048] A PVC toughening agent, comprising the following components in parts by weight: 40 parts of chlorinated polyethylene, 18 parts of polyacrylic acid resin, 9 parts of nano calcium carbonate, 7 parts of ACR anti-impact agent, 5 parts of emulsifier, polyethylene 3 parts of alcohol, 3 parts of methyl acrylate, 1 part of paraffin, 2 parts of antioxidant, 4 parts of crosslinking agent, 4 parts of coupling agent.

[0049] Described emulsifier selects sodium alkylbenzene sulfonate for use. Described antioxidant selects antioxidant BHT for use. The crosslinking agent is any one of allyl phthalate, vinyltriethoxysilane or vinyltrimethoxysilane. The coupling agent is a titanate coupling agent.

[0050] A preparation method for PVC toughening agent, comprising the following steps:

[0051] Step S01: pulverize for later use, weigh 40 parts of chlorinated polyethylene, 18 parts of polyacrylic acid resin and 9 parts of nano-scale calcium carbonate by weight and send them into a pulv...

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Abstract

The invention discloses a PVC flexibilizer which comprises the following components in parts by weight: 30-50 parts of chlorinated polyethylene, 15-20 parts of polyacrylic resin, 8-10 parts of nanoscale calcium carbonate, 6-8 parts of an ACR (acrylate) impact modifier, 4-6 parts of an emulsifier, 3-4 parts of polyvinyl alcohol, 2-5 parts of methyl acrylate, 1-2 parts of paraffin, 2-3 parts of an antioxidant, 3-5 parts of a cross-linking agent and 3-5 parts of a coupling agent. The PVC flexibilizer has the beneficial effects that the preparation method provided by the invention is simple in process steps, low in cost and easy to operate and implement, the PVC flexibilizer produced by adopting the preparation method is used for a PVC composite material, the PVC composite material is toughened, the strength, the rigidity and the modulus of the PVC composite material can be improved, the Vicat softening point is slightly reduced or hardly reduced, and the strength and the toughness of the PVC composite material are better balanced, so that the PVC composite material has very high strength while obtaining very good impact toughness.

Description

technical field [0001] The invention relates to the technical field of PVC toughening agents, in particular to a PVC toughening agent and a preparation method thereof. Background technique [0002] Polyvinyl chloride, referred to as PVC (Polyvinyl chloride), is a vinyl chloride monomer (vinyl chloridemonomer, referred to as VCM) in peroxides, azo compounds and other initiators; or under the action of light and heat, it can be polymerized according to the mechanism of free radical polymerization. made polymer. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins. Traditional PVC products have poor toughness and are prone to breakage, which greatly limits the application range of PVC. [0003] In order to overcome the lack of toughness of PVC products, it is common practice to add a toughening agent to the PVC resin to improve the toughness of PVC. The traditional toughening agent used in the processing of polyvinyl...

Claims

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Application Information

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IPC IPC(8): C08L23/28C08L33/00C08L33/04C08L29/04C08K3/26C08L27/06
CPCC08L23/286C08L33/00C08L33/04C08L29/04C08K3/26C08L27/06C08K2003/265
Inventor 王修军陆标郭仁堃
Owner JILONG PLASTIC PROD JIANGSU CO LTD
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