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Medical soft PVC material suitable for electron beam irradiation sterilization and preparation method thereof

A technology of PVC material and electron beam irradiation, which is applied in the field of modification of medical PVC materials, can solve the problems of mechanical property decline, yellowing of medical PVC materials, etc., and achieve the effect of easy absorption, preventing PVC degradation, and improving stability

Inactive Publication Date: 2021-01-19
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 purpose of the present invention is to provide a medical soft PVC material suitable for electron beam irradiation sterilization and its preparation method. The problem of performance degradation, and at the same time reduce the decomposition of plasticizers to produce toxic and harmful substances after electron beam irradiation sterilization, and improve the biological safety of medical soft PVC materials sterilized by electron beams

Method used

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  • Medical soft PVC material suitable for electron beam irradiation sterilization and preparation method thereof
  • Medical soft PVC material suitable for electron beam irradiation sterilization and preparation method thereof
  • Medical soft PVC material suitable for electron beam irradiation sterilization and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The material provided by the invention is formulated by weight ratio from the following raw materials:

[0029] Medical PVC resin powder: 100 parts;

[0030] Plasticizer DEHP: 40 parts;

[0031] Ultrafine calcium / zinc stabilizer: 1.5 parts;

[0032] Auxiliary heat stabilizer: 12 parts;

[0033] Antioxidant 2246S: 0.25 parts;

[0034] Antioxidant DSTP: 0.25 parts;

[0035] Lubricant: 1.0 parts.

[0036] The ultrafine calcium / zinc stabilizer is composed of 30-60% calcium stearate, 5-10% zinc glycerol, 5-10% zinc acetylacetonate, 10-20% stearoylbenzoylmethane , 5-15% of 1,3-diphenylpropanedione-rare earth metal organic complexes and 10-25% of bis(2,4-di-tert-butylphenol) pentaerythritol diphosphite; The auxiliary heat stabilizer is epoxy linseed oil; the lubricant is composed of 40-60% stearic acid and 40-60% polyethylene wax.

[0037] Specific production steps:

[0038] 1) Zinc stearate, zinc glycerol, zinc acetylacetonate, stearyl benzoyl methane, 1,3-diphenylpro...

Embodiment 2

[0043] The material provided by the invention is formulated by weight ratio from the following raw materials:

[0044] Medical PVC resin powder: 100 parts;

[0045] Plasticizer DEHP: 60 parts;

[0046] Ultrafine calcium / zinc stabilizer: 1 part;

[0047] Auxiliary heat stabilizer: 10 parts;

[0048]Antioxidant 2246S: 0.2 parts;

[0049] Antioxidant DLTP: 0.1 parts;

[0050] Lubricant: 0.8 parts.

[0051] The ultrafine calcium / zinc stabilizer is composed of 30-60% calcium stearate, 5-10% zinc glycerol, 5-10% zinc acetylacetonate, 10-20% stearoylbenzoylmethane , 5-15% of 1,3-diphenylpropanedione-rare earth metal organic complexes and 10-25% of bis(2,4-di-tert-butylphenol) pentaerythritol diphosphite; the auxiliary The heat stabilizer is epoxy linseed oil; the lubricant is composed of 40-60% stearic acid and 40-60% polyethylene wax.

[0052] The preparation method is the same as in Example 1.

Embodiment 3

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

[0055] Medical PVC resin powder: 100 parts;

[0056] Plasticizer DEHP: 70 parts;

[0057] Ultrafine calcium / zinc stabilizer: 1.2 parts

[0058] Auxiliary heat stabilizer: 8 parts;

[0059] Antioxidant 2246S: 0.1 parts;

[0060] Antioxidant DLTP: 0.1 parts;

[0061] Lubricant: 0.5 parts.

[0062] The ultrafine calcium / zinc stabilizer is composed of 30-60% calcium stearate, 5-10% zinc glycerol, 5-10% zinc acetylacetonate, 10-20% stearoylbenzoylmethane , 5-15% of 1,3-diphenylpropanedione-rare earth metal organic complexes and 10-25% of bis(2,4-di-tert-butylphenol) pentaerythritol diphosphite; The auxiliary heat stabilizer is epoxy linseed oil; the lubricant is composed of 40-60% stearic acid and 40-60% polyethylene wax.

[0063] The preparation method is the same as in Example 1.

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Abstract

The invention relates to a medical soft PVC material suitable for electron beam irradiation sterilization and a preparation method thereof. The medical soft PVC material comprises the following components in parts by weight: 100 parts of medical PVC resin powder; 40 to 70 parts of a plasticizer dioctyl phthalate (DEHP); 1.0 to 1.5 parts of an ultrafine calcium / zinc composite stabilizer; 5 to 12 parts of an auxiliary heat stabilizer; 0.1 to 0.5 part of a composite antioxidant; and 0.5 to 1.0 part of a lubricant. The invention mainly solves the problems that the existing medical PVC material isseriously yellowed after electron beam irradiation sterilization and the mechanical property is reduced after accelerated aging, reduces the toxic and harmful substances generated by decomposition ofthe plasticizer after electron beam irradiation sterilization, and enhances the biological safety of the medical soft PVC material after electron beam irradiation sterilization.

Description

technical field [0001] The invention relates to a modification technology of a medical PVC material, in particular to a medical soft PVC material suitable for electron beam irradiation sterilization. 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. With the increasingly stringent environmental protection requirements, in recent years, international developed regions and countries 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 normal temperature sterilization. However, ordinary medica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/06C08L91/00C08K13/02C08K5/07C08K5/098C08K5/057C08K5/526C08K5/375
CPCC08L27/06C08L2205/03C08K2201/005C08K2201/014C08L23/06C08L91/00C08K13/02C08K5/07C08K5/098C08K5/057C08K5/526C08K5/375
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
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