Rapidly degradable PVC material as well as preparation method and application thereof

A PVC material and rapid degradation technology, applied in the field of degradable PVC composite materials, can solve the problems of uncontrollable degradation speed, low practicability, complicated operation process, etc., and achieve harmless treatment, good biocompatibility, bacterial growth inhibitory effect

Active Publication Date: 2017-03-29
上海新上化高分子材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcomings are: 1. The operation process is complicated and the practicability is low; 2. It has an adverse effect on the safety of medical materials
[0006] The existing technology usually uses modified starch, corn fiber, etc. to accelerate the degradation of plas

Method used

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  • Rapidly degradable PVC material as well as preparation method and application thereof
  • Rapidly degradable PVC material as well as preparation method and application thereof
  • Rapidly degradable PVC material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Formula: (parts by weight)

[0030]

[0031] Degradation accelerator A is polyglycolic acid with a number average molecular weight of 200,000;

[0032] The degradation accelerating preparation B is β-crystalline polylactic acid;

[0033] Preparation steps:

[0034] (1) Add PVC, plasticizer, and ESO into the high-speed mixer in turn, heat and stir at a low speed of 50rpm to 90°C, then heat stabilizer and medical silicone oil, and run at 400rpm, and add degradation acceleration aids A and B after the temperature reaches 105°C . Stir continuously to 140°C and discharge to the cooling mixer with a rotation speed of 35rpm. When the temperature of the material is cooled to 40°C, the material is discharged.

[0035] (2) The material obtained in step (1) is granulated using a twin-screw extruder. The screw speed of the main engine is 70rpm, the temperature of each section of the extruder: the first section is 120°C, the second section is 130°C, the third section is 150°...

Embodiment 2

[0037] Formula: (parts by weight)

[0038]

[0039] The degradation accelerator A is polyglycolic acid, and the number average molecular weight is 10,000;

[0040] The degradation accelerating preparation B is β-crystalline polylactic acid;

[0041] The preparation method is as described in Example 1.

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PUM

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Abstract

The invention provides a rapidly degradable PVC material as well as a preparation method and an application thereof. The rapidly degradable PVC material comprises the following components: 100 parts of PVC resin, 20-80 parts of a plasticizer, 1-10 parts of an auxiliary plasticizer, 1-5 parts of a heat stabilizer, 0.1-3 parts of lubricant, 10-60 parts of an auxiliary agent A for accelerating degradation, and 10-30 parts of a preparation B for accelerating degradation; the auxiliary agent A for accelerating degradation is polyglycolic acid, and the preparation B for accelerating degradation is polylactic acid. The rapidly degradable PVC material satisfies physical properties, chemical properties and biological compatibility needed by the PVC material of disposable medical consumables, and is rapidly degradable in a burying treatment process. Irritation, carcinogenicity, and harm to male reproductive system which may exist in traditional PVC materials are removed, and disadvantages of long burying degradation period time, environment pollution, and the like of disposable medical consumable wastes are overcome.

Description

technical field [0001] The invention relates to a degradable PVC composite material and a preparation method thereof. Background technique [0002] At present, disposable medical consumables in the market generally use PVC materials with high cost performance. After long-term clinical use, it is found that the plasticizer di-isooctyl phthalate (DEHP) usually used in the preparation of PVC materials has the problem of easy migration. Experimental studies have shown that DEHP has a wide range of adverse reactions, which are manifested as liver toxicity and testicular atrophy. The disposable medical consumables prepared by using DEHP interfere with the male reproductive system and have harmful effects on male fetuses, newborns and adolescent males. Potentially high risk. [0003] Medical waste belongs to the first category of hazardous waste, and discarded disposable medical PVC products are usually buried with other solid waste. Experimental research by the European Vinyl Pr...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L67/04C08L83/04C08L91/00C08K5/1515C08K5/1535
CPCC08L27/06C08L2201/06C08L2205/025C08L2205/035C08L67/04C08L83/04C08L91/00C08K5/1515C08K5/1535
Inventor 王芹唐艳芳吴唯
Owner 上海新上化高分子材料有限公司
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