Medical PVC material adopted for steam sterilization, and preparation method thereof

A technology of PVC material and steam sterilization, which is applied in the field of modification of medical PVC materials, can solve the problems of sticky surface of equipment, degradation and yellowing of PVC materials, etc., and achieve the effect of improving long-term thermal stability.

Active Publication Date: 2012-01-04
常州恒方大高分子材料科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a medical PVC material suitable for steam sterilization and its preparation method, which mainly solves the effects of high temperature (121°C) and long time (30 minutes) in the steam sterilization process of existing medical PVC materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A medical PVC material suitable for steam sterilization, which consists of 100 parts by weight of PVC resin, 40 parts by weight of plasticizer DOP, 1.5 parts by weight of calcium / zinc heat stabilizer, 10 parts by weight of auxiliary heat stabilizer and 1.0 parts by weight of lubricant Composition; Wherein: described PVC resin is polyvinyl chloride resin of suspension method, degree of polymerization 1000~1300; Described calcium / zinc heat stabilizer is by weight percentage 40~60% calcium stearate, 20~30% Zinc palmitate, 15~30% magnesium hydroxycarbonate / aluminum compound; the auxiliary heat stabilizer is epoxy soybean oil; the lubricant is composed of 55~60% silicone oil and 40~45% by weight % of oxidized polyethylene wax composition.

[0011] The specific preparation steps are: calcium stearate, zinc palmitate and magnesium hydroxycarbonate / aluminum are composed in proportion and added to the epoxy soybean oil liquid, heated and stirred to 160°C, and the stirring speed ...

Embodiment 2

[0013] A medical PVC material suitable for steam sterilization, which consists of 100 parts by weight of PVC resin, 63 parts by weight of plasticizer DOP, 1.2 parts by weight of calcium / zinc heat stabilizer, 8 parts by weight of auxiliary heat stabilizer and 1.2 parts by weight of lubricant Composition; Wherein: described PVC resin is polyvinyl chloride resin of suspension method, degree of polymerization 1000~1300; Described calcium / zinc heat stabilizer is by weight percentage 40~60% calcium stearate, 20~30% Zinc palmitate, 15~30% magnesium hydroxycarbonate / aluminum compound; the auxiliary heat stabilizer is epoxy soybean oil; the lubricant is composed of 55~60% silicone oil and 40~45% by weight % of oxidized polyethylene wax composition.

[0014] The preparation method is the same as in Example 1.

Embodiment 3

[0016] A medical PVC material suitable for steam sterilization, which consists of 100 parts by weight of PVC resin, 70 parts by weight of plasticizer DOP, 1.0 parts by weight of calcium / zinc heat stabilizer, 6 parts by weight of auxiliary heat stabilizer and 1.5 parts by weight of lubricant Composition; Wherein: described PVC resin is polyvinyl chloride resin of suspension method, degree of polymerization 1000~1300; Described calcium / zinc heat stabilizer is by weight percentage 40~60% calcium stearate, 20~30% Zinc palmitate, 15~30% magnesium hydroxycarbonate / aluminum compound; the auxiliary heat stabilizer is epoxy soybean oil; the lubricant is composed of 55~60% silicone oil and 40~45% by weight % of oxidized polyethylene wax composition.

[0017] The preparation method is the same as in Example 1.

[0018] The medical PVC granules prepared by the method of the present invention are tested and compared with relevant performances.

[0019]

[0020] Various performan...

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PUM

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Abstract

The invention relates to a medical PVC material adopted for steam sterilization, and a preparation method thereof. The material comprises, by weight, 100 parts of PVC resin, 40-70 parts of a plasticizer DOP, 1.5-2.0 parts of a calcium/zinc heat stabilizer, 6-10 parts of an assistant heat stabilizer and 1.0-1.5 parts of a lubricant. The PVC resin is the polyvinyl chloride resin prepared through a suspension method, and has a polymerization degree of 1000-1300. The calcium/zinc heat stabilizer is a composite, wherein the composite comprises, by weight, 40-60% of calcium stearate, 20-30% of zincpalmitate, 15-30% of hydroxy magnesium/aluminum. The assistant heat stabilizer is epoxidised soyabean oil. The lubricant comprises, by weight, 55-60% of silicone oil and 40-45%of oxidized polyethylene wax. In the prior art, the PVC material is sterilized through the steam sterilization method, the high temperature (121 DEG C) and the long time treatment (30 minutes) during the steam sterilization process can cause degradation and yellowing of the PVC material, the precipitation of the plasticizer can cause clamminess generation of the instrument surface. With the present invention, the problems in the prior art are solved, the heat resistance of the medical PVC material is improved, and the probabilities of the yellowing and the precipitation of the plasticizer after steam sterilization are reduced.

Description

technical field [0001] The invention relates to a modification technology of a medical PVC material, in particular to a medical PVC material suitable for steam sterilization and a preparation method thereof. Background technique [0002] Medical PVC material is one of the main raw materials widely used in disposable medical devices at home and abroad. Due to the advantages of good comprehensive performance and superior cost performance, it has been more and more widely used in the field of medical equipment. At present, the vast majority of disinfection and sterilization methods for domestic medical PVC instruments use ethylene oxide sterilization. Although the ethylene oxide sterilization method has the advantages of broad-spectrum sterilization and strong killing activity, ethylene oxide is also a central nervous system depressant, stimulant and protoplasm poison, which has strong toxic and side effects on the human body. After ethylene oxide disinfection and sterilizati...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K13/02C08K5/098C08K5/1515C08K3/26B29C47/92B29C48/92
Inventor 陆锋胡丽萍
Owner 常州恒方大高分子材料科技有限公司
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