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A medical PVC material with high elasticity, low temperature resistance and electron beam irradiation sterilization and its preparation

A technology of PVC material and electron beam irradiation, which is applied in the field of medical PVC material and its preparation, can solve the problems of medical PVC material yellowing, low-temperature elastic decline, and mechanical property decline.

Active Publication Date: 2022-05-27
常州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

[0005] The purpose of the present invention is to provide a medical PVC material with high elasticity, low temperature resistance and electron beam irradiation sterilization and its preparation method. This material mainly solves the serious yellowing and the decline of mechanical properties of existing medical PVC materials after electron beam sterilization. The problem of low-temperature elasticity decline is caused, and the requirements of electron beam radiation resistance and low-temperature elasticity at -40°C for PVC materials are realized.

Method used

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  • A medical PVC material with high elasticity, low temperature resistance and electron beam irradiation sterilization and its preparation
  • A medical PVC material with high elasticity, low temperature resistance and electron beam irradiation sterilization and its preparation

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Experimental program
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Effect test

Embodiment 1

[0030] The material provided by the present invention is prepared from the following raw materials by weight:

[0031] Medical PVC resin powder: 100 parts;

[0032] Low temperature plasticizer DOA: 40 parts;

[0033] High elastic and low temperature resistant resin: 30 parts;

[0034] Ultrafine calcium / zinc stabilizer: 1.5 parts;

[0035] Auxiliary heat stabilizer: 5 parts;

[0036] Lubricant: 1.0 part.

[0037] The high elastic and low temperature resistant resin is composed of 50%-60% ethylene / vinyl acetate / carbon monoxide copolymer, 10%-20% ethylene-vinyl acetate copolymer and 20%-40% thermoplastic polyester polyurethane Elastomer composition; the superfine calcium / zinc stabilizer is composed of 30-60% calcium stearate, 5-10% zinc glycerol, 5-10% zinc acetylacetonate, 10-20% stearoyl Benzoylmethane, 5-15% of 1,3-diphenylpropanedione-rare earth metal organic complex and 10-25% of bis(2,4-di-tert-butylphenol) pentaerythritol diphosphite ; the auxiliary heat stabilizer i...

Embodiment 2

[0044] The material provided by the present invention is prepared from the following raw materials by weight:

[0045] Medical PVC resin powder: 100 parts;

[0046] Low temperature plasticizer DOA: 20 parts;

[0047] High elastic and low temperature resistant resin: 50 parts

[0048] Ultrafine calcium / zinc stabilizer: 1 part;

[0049] Auxiliary heat stabilizer: 8 parts;

[0050] Lubricant: 0.5 part.

[0051] The high elastic and low temperature resistant resin is composed of 50%-60% ethylene / vinyl acetate / carbon monoxide copolymer, 10%-20% ethylene-vinyl acetate copolymer and 20%-40% thermoplastic polyester polyurethane Elastomer composition; the superfine calcium / zinc stabilizer is composed of 30-60% calcium stearate, 5-10% zinc glycerol, 5-10% zinc acetylacetonate, 10-20% stearoyl Benzoylmethane, 5-15% of 1,3-diphenylpropanedione-rare earth metal organic complex and 10-25% of bis(2,4-di-tert-butylphenol) pentaerythritol diphosphite ; the auxiliary heat stabilizer is epox...

Embodiment 3

[0054] The material provided by the present invention is prepared from the following raw materials by weight:

[0055] Medical PVC resin powder: 100 parts;

[0056] Low temperature plasticizer DEHP: 30 parts;

[0057] High elastic and low temperature resistant resin: 50 parts;

[0058] Ultrafine calcium / zinc stabilizer: 1.0 part;

[0059] Auxiliary heat stabilizer: 10 parts;

[0060] Lubricant: 0.8 phr.

[0061] The high elastic and low temperature resistant resin is composed of 50%-60% ethylene / vinyl acetate / carbon monoxide copolymer, 10%-20% ethylene-vinyl acetate copolymer and 20%-40% thermoplastic polyester polyurethane Elastomer composition; the superfine calcium / zinc stabilizer is composed of 30-60% calcium stearate, 5-10% zinc glycerol, 5-10% zinc acetylacetonate, 10-20% stearoyl Benzoylmethane, 5-15% of 1,3-diphenylpropanedione-rare earth metal organic complex and 10-25% of bis(2,4-di-tert-butylphenol) pentaerythritol diphosphite ; the auxiliary heat stabilizer i...

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Abstract

The invention relates to a medical PVC material with high elasticity, low temperature resistance and electron beam irradiation sterilization and a preparation method thereof. The present invention comprises the following components by weight: 100 parts of medical PVC resin powder; 20-40 parts of low-temperature resistant plasticizer dioctyl adipate (DOA); 30-50 parts of high-elastic low-temperature resistant resin; ultrafine calcium / zinc Composite stabilizer 1.0-1.5 parts; auxiliary heat stabilizer 5-10 parts; lubricant 0.5-1.0 parts. The medical PVC material with high elasticity, low temperature resistance and electron beam irradiation sterilization can effectively solve the problems of severe yellowing and low-temperature elastic decline of existing medical PVC materials after electron beam irradiation sterilization, and realize the electron beam radiation resistance of PVC materials. Requirements for flexibility under sunlight and at -40°C.

Description

technical field [0001] The invention relates to a medical PVC material with high elasticity and resistance to low temperature and electron beam irradiation sterilization and a preparation method thereof. Background technique [0002] At present, three methods of high temperature steam sterilization, ethylene oxide sterilization and irradiation sterilization are widely used for disposable PVC medical consumables in the world. The elimination of traditional ethylene oxide sterilization has been accelerated, and steam sterilization has high requirements on materials and is difficult to popularize. The use of electron beam irradiation sterilization to sterilize medical devices has strong penetrating power, fast sterilization speed, A series of advantages such as high efficiency and room temperature sterilization. However, ordinary medical PVC materials are easily broken and degraded after being irradiated by electron beams, which reduces the mechanical properties of the materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L23/08C08L75/06C08L91/04C08L23/06C08K5/11C08K5/098C08K5/057C08K5/00C08K5/527C08K5/07C08K5/09
CPCC08L27/06C08L2201/08C08L2205/02C08L2205/025C08L2205/035C08L23/0853C08L75/06C08L91/04C08L23/06C08K5/11C08K5/098C08K5/057C08K5/0091C08K5/527C08K5/07C08K5/09
Inventor 沈蕾陆锋殷海青
Owner 常州恒方大高分子材料科技有限公司
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