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Heat-resistant and shock-resistant medical hard PVC material and preparation method thereof

A PVC material and impact-resistant technology, applied in the field of medical materials, can solve the problems of lack of medical rigid PVC materials, and achieve the effects of excellent processing fluidity, excessive shear force and simple process steps.

Inactive Publication Date: 2016-06-01
GUANGDONG BAIHE MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a lack of ideal medical rigid PVC materials in the market at present.

Method used

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  • Heat-resistant and shock-resistant medical hard PVC material and preparation method thereof
  • Heat-resistant and shock-resistant medical hard PVC material and preparation method thereof
  • Heat-resistant and shock-resistant medical hard PVC material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A heat-resistant and shock-resistant medical rigid PVC material, which comprises the following raw material components in parts by weight:

[0026]

[0027] Wherein the impact modifier is a mixture of butadiene acrylonitrile copolymer (nitrile rubber) and methyl methacrylate-butadiene-styrene copolymer (MBS).

[0028] The preparation process of the medical rigid PVC material:

[0029] (1) High mixing: Add PVC powder with a degree of polymerization of 1000, dioctyl phthalate, epoxy soybean oil, and organic tin stabilizer into the high mixing tank according to the ratio of raw material components, stir at low speed, heat, add methyl Acrylate copolymer, stir at high speed at 60°C, add internal lubricant GH4 when the temperature rises to 85°C, add external lubricant G70s, polyethylene wax and impact modifier when the temperature continues to rise to 90°C, and continue to heat up to High mixing is completed at 110°C;

[0030] (2) Low mixing: discharge the mixture obtain...

Embodiment 2

[0033] A heat-resistant and shock-resistant medical rigid PVC material, which comprises the following raw material components in parts by weight:

[0034]

[0035] Wherein the impact modifier is butadiene acrylonitrile copolymer (nitrile rubber).

[0036] The preparation process of the medical rigid PVC material is the same as that of the above-mentioned embodiment 1.

Embodiment 3

[0038] A heat-resistant and shock-resistant medical rigid PVC material, which comprises the following raw material components in parts by weight:

[0039]

[0040] Wherein the impact modifier is butadiene acrylonitrile copolymer (nitrile rubber).

[0041] The preparation process of the medical rigid PVC material is the same as that of the above-mentioned embodiment 1.

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Abstract

The invention discloses a heat-resistant and shock-resistant medical hard PVC material. The material is prepared from, by weight, 100 parts of PVC powder, 0-5 parts of plasticizer, 1-3 parts of epoxy soybeans, 2-4 parts of an organic tin stabilizing agent, 1.5-3 parts of an acrylic acid auxiliary agent, 0.3-1.2 parts of external lubricant, 0.8-2 parts of internal lubricant, 5-15 parts of shock-resistant modifier and 0-0.5 part of polyethylene wax. The prepared heat-resistant and shock-resistant medical hard PVC material is excellent in processing fluidity, heat deformation property and shock resistance, the quality problems that medical hard PVC materials on the current market, especially medical injection molding accessories are deformed easily when heated, are prone to cracking in the secondary bending process and the like are solved, meanwhile, the problem that shearing force of the medical hard PVC materials is excessively large in the processing and forming process is further solved, production efficiency is improved, and the service life of production equipment is prolonged. The invention further discloses a preparation method of the heat-resistant and shock-resistant medical hard PVC material. The heat-resistant and shock-resistant medical hard PVC material and the preparation method thereof are simple in process step, high in production efficiency, low in production cost and beneficial to industrial production.

Description

technical field [0001] The invention relates to the field of medical materials, in particular to a medical rigid PVC material and a preparation method thereof Background technique [0002] Medical PVC material is the main material of disposable sterile blood circuit products, which can be divided into soft PVC and hard PVC. Soft PVC is mostly used for extrusion pipes, and hard PVC is mostly used for injection molding accessories. In the PVC material formula, the higher the amount of plasticizer added, the lower the hardness of the material, the lower the plasticizing temperature, and the easier processing; on the contrary, the lower the amount of plasticizer added, the higher the hardness and the higher the plasticizing temperature , Poor fluidity during processing and difficult to process. Accessories made of unmodified rigid PVC formula have poor toughness, are easy to crack under force, and cannot meet the requirements for use. The injection molding parts in the dispos...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L91/00C08L9/02C08L51/04
CPCC08L27/06C08L2201/08C08L2205/035C08L91/00C08L9/02C08L51/04
Inventor 李素娟蔡继钢周伟
Owner GUANGDONG BAIHE MEDICAL TECH CO LTD
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