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A kind of environment-friendly matte medical PVC granular material and preparation method thereof

A pellet and environmental protection technology, applied in the field of environmentally friendly matte medical PVC pellets and its preparation, can solve problems such as glare, inability to meet the requirements of high-quality medical devices, glare, etc.

Active Publication Date: 2016-05-11
ZHEJIANG WANG YANG POLYMER MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As people become more and more aware of environmental protection, higher requirements are put forward for the environmental performance of medical PVC pellets. At the same time, the existing medical PVC pellets do not have a matte effect, which will cause the surface of medical devices glare , dazzling phenomenon, which affects the appearance of medical devices in clinical applications, and cannot meet the requirements of high-quality medical devices

Method used

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  • A kind of environment-friendly matte medical PVC granular material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] An environmentally friendly matte medical PVC pellet preparation method, the specific preparation steps are:

[0040] ①. Vibrate the PVC cross-linked resin and weigh it;

[0041] ②. Add the plasticizer, composite calcium zinc stabilizer, auxiliary stabilizer, chelating agent, and lubricant to the PVC cross-linked resin for mixing and stirring, and the stirring speed is 1450 rpm;

[0042] ③. Heat and stir to 50℃, add fumed nano silica;

[0043] ④ Stir the above mixture at a uniform speed to 65°C and send it to a low-speed mixer for cooling;

[0044] ⑤. Stir the above mixture at a stirring speed of 200 rpm;

[0045] ⑥. When the temperature of the above mixture drops to 26℃, add it to the twin-screw extrusion granulator;

[0046] ⑦. Set the barrel temperature to 135℃~180℃, and the die temperature to 155℃~165℃;

[0047] ⑧, cut into pellets.

Embodiment 2

[0049] An environmentally friendly matte medical PVC pellet preparation method, the specific preparation steps are:

[0050] ①. Vibrate the PVC cross-linked resin and weigh it;

[0051] ②. Add the plasticizer, composite calcium zinc stabilizer, auxiliary stabilizer, chelating agent, and lubricant to the PVC cross-linked resin for mixing and stirring, and the stirring speed is 1450 rpm;

[0052] ③, heat and stir to 51 ℃, add fumed nano silica;

[0053] ④. Stir the above mixture at a uniform speed to 66°C and send it to a low-speed mixer for cooling;

[0054] ⑤. Stir the above mixture at a stirring speed of 200 rpm;

[0055] ⑥. After the temperature of the above mixture drops to 27°C, add it to the twin-screw extrusion granulator;

[0056] ⑦. Set the barrel temperature to 135℃~180℃, and the die temperature to 155℃~165℃;

[0057] ⑧, cut into pellets.

Embodiment 3

[0059] An environmentally friendly matte medical PVC pellet preparation method, the specific preparation steps are:

[0060] ①. Vibrate the PVC cross-linked resin and weigh it;

[0061] ②. Add the plasticizer, composite calcium zinc stabilizer, auxiliary stabilizer, chelating agent, and lubricant to the PVC cross-linked resin for mixing and stirring, and the stirring speed is 1450 rpm;

[0062] ③. Heat and stir to 52℃, add fumed nano silica;

[0063] ④. Stir the above mixture at a uniform speed to 67°C and send it to a low-speed mixer for cooling;

[0064] ⑤. Stir the above mixture at a stirring speed of 200 rpm;

[0065] ⑥. After the temperature of the above mixture drops to 27°C, add it to the twin-screw extrusion granulator;

[0066] ⑦. Set the barrel temperature to 135℃~180℃, and the die temperature to 155℃~165℃;

[0067] ⑧, cut into pellets.

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Abstract

The invention discloses novel environment-friendly matte medical PVC (polyvinyl chloride) aggregate and a preparation method thereof. The novel environment-friendly matte medical PVC aggregate comprises the following materials in parts by weight: 100 parts of PVC cross-linked resin, 5-10 parts of silicon dioxide, 0.5-3 parts of compound calcium zinc stabilizer, 3-6 parts of auxiliary stabilizer, 0.1-0.7 part of lubricant, 0.5-1.5 parts of chelating agent and 15-105 parts of plasticizer. The novel environment-friendly matte medical PVC aggregate prepared by the preparation method disclosed by the invention has the characteristics of being high in environment-friendly performance and good in matte effect, and is a PVC aggregate formula which satisfies matte and environment-friendly requirements on the appearance of medical instruments and apparatuses.

Description

Technical field [0001] The invention relates to the field of medical PVC pellets, and more specifically, it relates to an environmentally friendly matte medical PVC pellets and a preparation method thereof. Background technique [0002] Medical PVC pellets are currently one of the main raw materials widely used in disposable medical devices at home and abroad. Due to the characteristics of safety, low price, and excellent comprehensive performance, in addition to traditional infusion sets, infusion bags and other application fields, various other applications have also been more and more popularized. For example: various oxygen masks, anesthesia masks, tracheal intubation, analgesic pumps, etc. [0003] As people’s awareness of environmental protection becomes stronger, higher requirements are placed on the environmental performance of medical PVC pellets. At the same time, the existing medical PVC pellets do not have a matte effect, which will cause the surface of medical equipme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K3/36C08K5/523C08K5/1515C08K5/12
Inventor 汪德兴
Owner ZHEJIANG WANG YANG POLYMER MATERIALS
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