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Medical hard PVC material with high heat resistance and electron beam sterilization resistance and preparation method thereof

A PVC material and high heat resistance technology, which are applied in the field of high heat resistance and radiation sterilization medical rigid PVC materials and their preparation, can solve problems such as mechanical properties decline and yellowing, and achieve the effect of efficiently absorbing hydrogen chloride

Active Publication Date: 2021-04-09
深圳恒方大高分子材料科技有限公司 +1
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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 kind of high heat-resistant electron beam sterilization medical hard PVC material and its preparation method, mainly solve the serious yellowing (dark brown) of existing medical hard PVC material after ray sterilization, mechanical properties The two problems of sharp drop and increase of its heat deflection temperature

Method used

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  • Medical hard PVC material with high heat resistance and electron beam sterilization resistance and preparation method thereof
  • Medical hard PVC material with high heat resistance and electron beam sterilization resistance and preparation method thereof
  • Medical hard PVC material with high heat resistance and electron beam sterilization resistance and preparation method thereof

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Embodiment 1

[0037] The material provided by the invention is formulated by weight ratio from the following raw materials:

[0038] Medical PVC resin powder: 100.0 parts;

[0039] Organotin stabilizer: 2.0 parts;

[0040] Heat-resistant modified resin: 15.0 parts;

[0041] Impact modifier: 5.0 parts;

[0042] Processing aid: 2.0 parts;

[0043] Auxiliary heat stabilizer: 5.0 parts;

[0044] Antioxidant: 0.5 parts;

[0045] Composite free radical quencher: 2.0 parts;

[0046] Lubricant: 0.6 parts.

[0047] The medical PVC resin powder is a suspension method PVC resin with a polymerization degree of 500-800; the organotin stabilizer is a mercaptan methyl tin stabilizer; the heat-resistant modified resin is made of 30%-50 A mixture of α-methylstyrene polymer, 30-40% styrene-maleic anhydride copolymer and 10-30% styrene-acrylonitrile; the impact modifier is styrene-type impact-modified agent; the processing aid is a methacrylate processing aid; the auxiliary stabilizer is epoxy linseed...

Embodiment 2

[0053] The material provided by the invention is formulated by weight ratio from the following raw materials:

[0054] Medical PVC resin powder: 100.0 parts;

[0055] Organotin stabilizer: 3.0 parts;

[0056] Heat-resistant modified resin: 20.0 parts

[0057] Impact modifier: 8.0 parts;

[0058] Processing aid: 1.5 parts;

[0059] Auxiliary heat stabilizer: 3.0 parts;

[0060] Antioxidant: 1.0 parts;

[0061] Composite free radical quencher: 1.0 parts;

[0062] Lubricant: 0.8 parts.

[0063] The medical PVC resin powder is a suspension method PVC resin with a polymerization degree of 500-800; the organotin stabilizer is a mercaptan methyl tin stabilizer; the heat-resistant modified resin is made of 30%-50 A mixture of α-methylstyrene polymer, 30-40% styrene-maleic anhydride copolymer and 10-30% styrene-acrylonitrile; the impact modifier is styrene-type impact-modified agent; the processing aid is a methacrylate processing aid; the auxiliary stabilizer is epoxy linseed ...

Embodiment 3

[0066] The material provided by the invention is formulated by weight ratio from the following raw materials:

[0067] Medical PVC resin powder: 100 parts;

[0068] Organotin stabilizer: 3.0 parts;

[0069] Heat-resistant modified resin: 20.0 parts;

[0070] Impact modifier: 7.0 parts;

[0071] Processing aid: 1.0 part;

[0072] Auxiliary heat stabilizer: 2.0 parts;

[0073] Antioxidant: 0.5 part;

[0074] Composite free radical quencher: 1.5 parts;

[0075] Lubricant: 1.0 parts.

[0076] The medical PVC resin powder is a suspension method PVC resin with a polymerization degree of 500-800; the organotin stabilizer is a mercaptan methyl tin stabilizer; the heat-resistant modified resin is made of 30%-50 A mixture of α-methylstyrene polymer, 30-40% styrene-maleic anhydride copolymer and 10-30% styrene-acrylonitrile; the impact modifier is styrene-type impact-modified agent; the processing aid is a methacrylate processing aid; the auxiliary stabilizer is epoxy linseed oil...

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Abstract

The invention relates to a medical hard PVC material with high heat resistance and electron beam irradiation sterilization resistance and a preparation method thereof. The medical hard PVC material comprises the following components by weight: 100.0 parts of medical PVC resin powder; 2.0-3.0 parts of an organic tin stabilizer; 15.0-30.0 parts of heat-resistant modified resin, 5.0-10.0 parts of an impact modifier and 1.0-2.0 parts of a processing aid; 2.0-5.0 parts of an auxiliary heat stabilizer; 0.5-1.0 part of an antioxidant; 1.0-2.0 parts of a composite free radical quenching agent; and 0.5-1.0 part of a lubricant. The problems that an existing medical hard PVC material is seriously yellowed and the mechanical property is sharply reduced after electron beam irradiation sterilization are mainly solved, and meanwhile the use temperature of the material is increased.

Description

technical field [0001] The invention relates to a medical rigid PVC material with high heat resistance and radiation resistance and a preparation method thereof. Background technique [0002] At present, the world generally adopts three methods of high-temperature steam sterilization, ethylene oxide sterilization and radiation sterilization for disposable polyvinyl chloride medical consumables. As environmental protection becomes more and more stringent, in recent years, developed regions and countries have Accelerate the elimination of traditional ethylene oxide sterilization, and steam sterilization has high requirements for materials and is difficult to popularize. The use of electron beam irradiation sterilization to sterilize medical devices has strong penetrating power, fast sterilization speed and high efficiency. A series of advantages such as high temperature sterilization and normal temperature sterilization. However, since there is no plasticizer added to the med...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L25/16C08L35/06C08L25/12C08L91/04C08K5/378C08K5/00C08K5/134C08K5/372C08K5/524C08K5/58
CPCC08L27/06C08L2201/08C08L2205/02C08L2205/035C08L25/16C08L35/06C08L25/12C08L91/04C08K5/378C08K5/0091C08K5/1345C08K5/372C08K5/524C08K5/58
Inventor 胡丽萍沈蕾汤明佳
Owner 深圳恒方大高分子材料科技有限公司