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A kind of preparation method of utilizing γ-ray radiation to modify polyvinyl chloride

A polyvinyl chloride, gamma ray technology, applied in the direction of climate sustainability, sustainable manufacturing/processing, chemical industry, etc., can solve the problems of poor mechanical properties of polyvinyl chloride materials, to improve the poor toughness and improve the mechanical properties. performance, the effect of improving elongation at break and impact strength

Active Publication Date: 2022-08-09
ZHONGJIN IRRADIATION WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for preparing polyvinyl chloride modified by γ-ray radiation, so as to solve the technical problem of poor mechanical properties of existing polyvinyl chloride materials

Method used

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  • A kind of preparation method of utilizing γ-ray radiation to modify polyvinyl chloride
  • A kind of preparation method of utilizing γ-ray radiation to modify polyvinyl chloride

Examples

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Effect test

Embodiment 1

[0027] A preparation method utilizing γ-ray radiation modified polyvinyl chloride, comprising the following preparation steps:

[0028] (1) Disperse 8g of polyvinyl chloride powder uniformly in 100mL of deionized water, add 4g of acrylamide monomer, ultrasonically disperse uniformly, then pass nitrogen into the solution to remove oxygen in the mixed solution, and then send into cobalt 60 irradiation after sealing room irradiation, the irradiation dose is 20kGy, and the irradiation dose rate is 0.5kGy / h. After irradiation, the reaction product is filtered, washed and dried to obtain the polyacrylamide grafted polyvinyl chloride material;

[0029] (2) 10g of hexagonal boron nitride was added to 200mL of 6mol / L sodium hydroxide solution, stirred in an oil bath at 130°C for 6h to carry out a hydroxylation reaction, after the reaction was over, the reaction product was washed and dried, That is to obtain hydroxylated boron nitride;

[0030] (3) Mix 20g of polyacrylamide grafted po...

Embodiment 2

[0032] A preparation method utilizing γ-ray radiation modified polyvinyl chloride, comprising the following preparation steps:

[0033] (1) Uniformly disperse 10g polyvinyl chloride powder in 100mL deionized water, add 5g acrylamide monomer, ultrasonically disperse uniformly, then pass nitrogen into the solution to remove oxygen in the mixed solution, seal and send cobalt 60 to irradiate room irradiation, the irradiation dose is 30kGy, and the irradiation dose rate is 0.6kGy / h. After irradiation, the reaction product is filtered, washed and dried to obtain the polyacrylamide grafted polyvinyl chloride material;

[0034] (2) 15g of hexagonal boron nitride was added to 250mL of 6mol / L sodium hydroxide solution, stirred in an oil bath at 150°C for 6h to carry out a hydroxylation reaction, after the reaction was over, the reaction product was washed and dried, That is to obtain hydroxylated boron nitride;

[0035] (3) Mix 30g of polyacrylamide grafted polyvinyl chloride material ...

Embodiment 3

[0037] A preparation method utilizing γ-ray radiation modified polyvinyl chloride, comprising the following preparation steps:

[0038] (1) Uniformly disperse 12g polyvinyl chloride powder in 100mL deionized water, add 6g acrylamide monomer, ultrasonically disperse uniformly, then pass nitrogen into the solution to remove the oxygen in the mixed solution, and after sealing, send cobalt 60 to irradiate room irradiation, the irradiation dose is 25kGy, and the irradiation dose rate is 1kGy / h. After irradiation, the reaction product is filtered, washed and dried to obtain the polyacrylamide grafted polyvinyl chloride material;

[0039] (2) 12g of hexagonal boron nitride was added to 250mL of 5mol / L sodium hydroxide solution, and stirred in an oil bath at 160°C for 6h to carry out a hydroxylation reaction. After the reaction was completed, the reaction product was washed and dried. That is to obtain hydroxylated boron nitride;

[0040] (3) Mix 35g of polyacrylamide grafted polyvin...

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Abstract

The invention discloses a method for preparing polyvinyl chloride modified by γ-ray radiation, which includes three steps of preparing polyacrylamide grafted polyvinyl chloride material, preparing hydroxylated boron nitride and preparing modified polyvinyl chloride material. Under the action of gamma rays, polyvinyl chloride and acrylamide monomers can generate a large number of free radicals, undergo polymerization and cross-linking reactions, and then obtain polyacrylamide-grafted polyvinyl chloride materials. Polyacrylamide has the characteristics of high strength, Grafting it on the polyvinyl chloride can improve the mechanical properties of the polyvinyl chloride, and at the same time, the boron nitride has a soft lamellar structure. The problem of poor toughness of polyvinyl chloride can be effectively improved, and the elongation at break and impact strength of the polyvinyl chloride material are improved.

Description

technical field [0001] The invention relates to the technical field of preparation of polyvinyl chloride materials, in particular to a preparation method for modifying polyvinyl chloride by gamma ray radiation. Background technique [0002] Polyvinyl chloride has the advantages of excellent chemical resistance, mechanical strength, electrical insulation, and low flow resistance. Polyvinyl chloride can be formed by extrusion, injection, molding, blow molding, etc., and is widely used in the manufacture of artificial leather, cables, plastic bags, films, daily necessities and various pipes. [0003] At present, PVC materials need to be further improved in self-cleaning, mechanical properties, flame retardancy, low water vapor transmission rate, anti-fungal properties, compatibility, aging resistance, oxidation resistance, hydrophilicity and other properties, such as Patent document CN104231151B discloses a large particle size acrylate impact modifier for polyvinyl chloride an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/00C08K9/02C08K3/38C08F259/04C08F220/56C08F2/46
CPCC08K9/02C08K3/38C08F259/04C08F2/46C08K2003/385C08L51/003C08F220/56Y02P20/10
Inventor 余泉洪郑彬耿媛媛詹露
Owner ZHONGJIN IRRADIATION WUHAN
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