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Medical composite material and its preparing method

A composite material and medical technology, which is applied in the field of medical composite materials and its preparation, can solve problems that have not been successfully developed, and achieve good barrier properties and mechanical properties, good transparency, and easy processing and molding.

Inactive Publication Date: 2003-04-09
威海赛绿特科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country has also begun to legislate to restrict the use of polyvinyl chloride in disposable medical packaging materials and disposable infusion equipment. However, due to the comprehensive impact of cost, barrier performance, and mechanical properties, the substitutes for polyvinyl chloride have not yet been successfully developed.

Method used

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  • Medical composite material and its preparing method
  • Medical composite material and its preparing method
  • Medical composite material and its preparing method

Examples

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preparation example Construction

[0023] The preparation method of the medical composite material provided by the present invention is as follows:

[0024] The above carbon dioxide copolymer is used as the intermediate barrier layer, polyethylene or polypropylene is used as the protective layer, and the three-layer co-extrusion technology is used at 140-190°C to prepare polyethylene / carbon dioxide copolymer / polyethylene or polypropylene / carbon dioxide copolymer Material / polypropylene medical composite material. The oxygen permeability of the composite material at 25℃ is lower than 6×10 -12 cm 3 -cm / cm 2 -s-cmHg, the permeability to water vapor is lower than 1.2×10 -7 cm 3 -cm / cm 2 -s-cmHg.

[0025] The above carbon dioxide copolymer is used as the intermediate barrier layer, polyethylene or polypropylene is used as the protective layer, and a five-layer co-extrusion method is used at 140-190°C to prepare polyethylene / carbon dioxide copolymer / polyethylene / carbon dioxide copolymer / Polyethylene or polypropylene / carb...

Embodiment 1

[0027] Example 1: A medical composite material, using carbon dioxide-ethylene oxide copolymer as the intermediate barrier layer, using polyethylene as the protective layer, and using three-layer co-extrusion technology at 140-190°C to prepare polyethylene / carbon dioxide -Ethylene oxide copolymer / polyethylene medical composite material, the oxygen permeability of the composite material at 25℃ is lower than 6×10 -12 cm 3 -cm / cm 2 -s-cmHg, the permeability to water vapor is lower than 1.2×10 -7 cm 3 -cm / cm 2 -s-cmHg. The material can be used for the production of disposable infusion bags.

Embodiment 2

[0028] Example 2: A medical composite material, using carbon dioxide-cyclohexane oxide copolymer as the intermediate barrier layer, using polypropylene as the protective layer, and using a five-layer co-extrusion method at 140-190°C to prepare polypropylene / Carbon dioxide-cyclohexane oxide copolymer / polypropylene / carbon dioxide-cyclohexane oxide copolymer / polypropylene medical composite material. At 25℃, the oxygen permeability of the composite material is lower than 1.5×10 -12 cm 3 -cm / cm 2 -s-cmHg, the permeability of water vapor is less than 0.2×10 -7 cm 3 -cm / cm 2 -s-cmHg.

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Abstract

The composite medical material includes polyethylene or polypropylene as protecting layer and CO2 copolymer as the intermediate blocking layer. The CO2 copolymer may be binary or ternary copolymer of CO2 and epoxy ethane, epoxy propane, cyclohexane monoxide, styrene monoxide, epoxy propane and epoxy cyclohexane, or epoxy propane and styene monoxide. The composite medical material is prepared via three-layered or five-layered coextrusion at 140-190 deg.c. It has excellent blocking performance and mechanical performance, is degradable and transparent, and may be used in production of disposable infusion bag, disposable infusion duct and relative articles.

Description

(1) Technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a medical composite material and a preparation method thereof. (2) Background technology [0002] We know that composite materials used in disposable medical infusion bags, infusion equipment, etc. are generally prepared by a five-layer or seven-layer co-extrusion method, in which polyvinyl chloride or polyvinylidene chloride is the barrier layer, and polyethylene and polypropylene are used as protection. Layer, two bonding layers are needed in the middle. The barrier layer is used to insulate oxygen and water vapor. Considering the material cost and barrier performance, the current barrier layer of disposable medical materials generally uses polyvinyl chloride. However, processing aids must be used in the processing of PVC, and there are problems with the precipitation of additives during use and storage, which affects the health of p...

Claims

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Application Information

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IPC IPC(8): A61L31/12
Inventor 王献红冯超张华威
Owner 威海赛绿特科技发展有限公司
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