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High-resilience antibacterial medical polyvinyl chloride (PVC) plastic and preparation method thereof

A technology of polyvinyl chloride and polyvinyl chloride resin, applied in the field of medical polyvinyl chloride materials, can solve the problems of unsecured patient safety, low sterilization efficiency, long-term ventilation, etc., and achieves good chemical and biological properties. , The effect of shortening the sterilization cycle and improving the sterilization efficiency

Inactive Publication Date: 2016-01-13
上海新上化高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, at present, medical equipment in my country is widely sterilized with ethylene oxide. Ethylene oxide is a flammable, explosive, and suspected carcinogenic toxic gas, which is harmful to the environment. After sterilization, it takes a long time to ventilate. The sterilization cycle takes about 2 weeks, and there is a problem of low sterilization efficiency
Secondly, some hospital pipelines have high requirements on the elasticity of the materials used. For example, pump tubes in hemodialysis pipelines require materials with high resilience. At present, conventional PVC materials cannot meet their elasticity requirements.
Third, secondary pollution is not prevented during the storage period and use of PVC equipment after sterilization, and the safety of patients cannot be guaranteed.

Method used

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  • High-resilience antibacterial medical polyvinyl chloride (PVC) plastic and preparation method thereof
  • High-resilience antibacterial medical polyvinyl chloride (PVC) plastic and preparation method thereof
  • High-resilience antibacterial medical polyvinyl chloride (PVC) plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Components and proportions by weight:

[0034]

[0035]

[0036] The degree of polymerization of polyvinyl chloride resin is 2000;

[0037] The heat stabilizer is a mixture of calcium stearate and zinc stearate with a weight ratio of 1:1;

[0038] Preparation

[0039] (1) Add polyvinyl chloride resin, plasticizer, auxiliary plasticizer, and elastomer into the high-speed mixer, heat and stir at 30rpm to 80°C, add antibacterial materials and heat stabilizers, and run at 450rpm until the temperature reaches 120°C, Add lubricant. Stir continuously to 140°C and discharge to the cooling mixer with a rotation speed of 30rpm. When the temperature of the material is cooled to 50°C, the material is discharged.

[0040] (2) The material obtained in step (1) is granulated using a twin-screw extruder. The screw speed of the main engine is 60rpm, the temperature of each section of the extruder: the first section is 110°C, the second section is 130°C, the third section is 1...

Embodiment 2

[0042]

[0043] The degree of polymerization of polyvinyl chloride resin is 2300;

[0044] The heat stabilizer is a mixture of calcium stearate and zinc stearate with a weight ratio of 1:1;

[0045] The preparation method is the same as in Example 1.

Embodiment 3

[0047]

[0048]

[0049] The degree of polymerization of polyvinyl chloride resin is 2500;

[0050] The elastomer is a mixture of styrene-ethylene-butylene-styrene block copolymer (SEBS), nitrile rubber (NBR), polyurethane (TPU) or ethylene-octene copolymer (POE) in the weight ratio:

[0051] Styrene-Ethylene-Butene-Styrene Block Copolymer: Nitrile Rubber: Polyurethane: Ethylene Octene Copolymer Elastomer

[0052] =1:0.2:0.35:0.25;

[0053] The styrene content in the styrene-ethylene-butylene-styrene block copolymer is 30%, and the molecular weight is 70,000;

[0054] The average molecular weight of nitrile rubber is 650,000;

[0055] The average molecular weight of polyurethane is 30,000;

[0056] The octene content in the ethylene octene copolymer is 40% to 60%;

[0057] The heat stabilizer is a mixture of calcium stearate and zinc stearate with a weight ratio of 1:1;

[0058] The preparation method is the same as in Example 1.

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Abstract

The invention provides high-resilience antibacterial medical polyvinyl chloride (PVC) plastic and a preparation method thereof. The high-resilience antibacterial medical PVC plastic comprises, by weight, 100 parts of ultra-high molecular weight PVC resin, 40-80 parts of a plasticizer, 10-60 parts of an elastomer, 5-20 parts of an auxiliary plasticizer and 0.5-5 parts of a heat stabilizer. The invention relates to the high-resilience antibacterial medical PVC plastic which has good physical properties, chemical performances and biological properties, satisfies GB15593-1995 blood (liquid) transfusion device flexible PVC plastic related requirements and is medical PVC plastic with excellent resilience and antibacterial and bacteriostatic effects, and the preparation method thereof. The PVC plastic has the characteristics of excellent antibacterial property, bacteriostasis and resilience, shortens an ethylene oxide disinfection period and improves disinfection efficiency.

Description

technical field [0001] The invention relates to a medical polyvinyl chloride material, in particular to a high resilience antibacterial medical polyvinyl chloride plastic. Background technique [0002] Polyvinyl chloride (PVC) is widely used in various fields because of its low cost and good comprehensive performance. It is one of the most widely used plastics at present. Blood transfusion bags, infusion bags, medical catheters, hemodialysis tubing, etc., which are commonly used at present, are mostly made of medical PVC. Medical PVC material has excellent performance, low price and convenient use, but there are also some problems. First of all, at present, medical equipment in my country is widely sterilized with ethylene oxide. Ethylene oxide is a flammable, explosive, and suspected carcinogenic toxic gas, which is harmful to the environment. After sterilization, it takes a long time to ventilate. The sterilization cycle takes about 2 weeks, and there is a problem of low ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L53/02C08L9/02C08L75/06C08L23/08C08L5/08C08K13/02C08K3/08C08K5/098
Inventor 王芹唐艳芳吴唯卞俭俭
Owner 上海新上化高分子材料有限公司
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