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Preparation method of biodegradable polyurethane composite

A composite material and polyurethane technology, applied in the field of polyurethane materials, can solve the problems that polyurethane materials cannot be naturally biodegraded, and achieve the effects of improving biocompatibility, reducing adsorption capacity, and improving hydrophilicity

Inactive Publication Date: 2019-07-12
常州五荣化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention: Aiming at the problem that traditional polyurethane materials cannot be naturally biodegraded, a preparation method of biodegradable polyurethane composite materials is provided

Method used

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  • Preparation method of biodegradable polyurethane composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Place polyethylene glycol and mint adhesive fiber in a vacuum drying oven, and vacuum-dry and dehydrate at 60°C and 2000 Pa for 10 hours to obtain dehydrated polyethylene glycol and dehydrated mint adhesive fiber, which are weighed in parts by weight, respectively. Measure 10 parts of dehydrated mint adhesive fiber, 10 parts of dehydrated polyethylene glycol, 20 parts of ε-caprolactone, 20 parts of adipic acid, 1 part of butyl titanate, and mix dehydrated mint adhesive fiber, dehydrated polyethylene glycol Put it in a vacuum reaction bottle, keep it at 80°C and 4000Pa for 1 hour, and cool it at room temperature to obtain a mixed system. Add ε-caprolactone, adipic acid, and butyl titanate into the mixed system, and add The gas flow rate was protected by argon, stirred and reacted at 150r / min under the condition of 120°C for 2h, cooled at room temperature to obtain a mint fiber-based polyester copolymer, and then 50 parts by weight of hexamethylene bismuth Isocyanate, 10 ...

Embodiment 2

[0037] Place the polyethylene glycol and mint adhesive fiber in a vacuum drying oven, and vacuum-dry and dehydrate at 70°C and 2500 Pa for 11 hours to obtain dehydrated polyethylene glycol and dehydrated mint adhesive fiber, which are weighed in parts by weight, respectively. Measure 12 parts of dehydrated mint adhesive fiber, 12 parts of dehydrated polyethylene glycol, 25 parts of ε-caprolactone, 22 parts of adipic acid, 2 parts of butyl titanate, and dehydrated mint adhesive fiber, dehydrated polyethylene glycol Put it in a vacuum reaction bottle, keep it under the condition of 90°C and 4500Pa for 1 hour, and cool it at room temperature to obtain a mixed system. The gas flow rate was protected by argon, stirred and reacted at 175r / min under the condition of 130°C for 3h, and cooled at room temperature to obtain a mint fiber-based polyester copolymer, and then 55 parts by weight of hexamethylene di Isocyanate, 15 parts of 1,4-butanediol, hexamethylene diisocyanate, nitrogen p...

Embodiment 3

[0039] Place polyethylene glycol and mint adhesive fiber in a vacuum drying oven, and vacuum-dry and dehydrate at 80°C and 3000 Pa for 12 hours to obtain dehydrated polyethylene glycol and dehydrated mint adhesive fiber, which are weighed in parts by weight, respectively. Measure 15 parts of dehydrated mint adhesive fiber, 15 parts of dehydrated polyethylene glycol, 30 parts of ε-caprolactone, 25 parts of adipic acid, 3 parts of butyl titanate, and dehydrated mint adhesive fiber, dehydrated polyethylene glycol Put it in a vacuum reaction flask, keep it at 100°C and 5000Pa for 2 hours, and cool it at room temperature to obtain a mixed system. Add ε-caprolactone, adipic acid, and butyl titanate into the mixed system, and add The gas flow rate was passed into the protection of argon, stirred and reacted at 200r / min under the condition of 140°C for 4h, and cooled at room temperature to obtain a mint fiber-based polyester copolymer, and then 60 parts by weight of hexamethylene di I...

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Abstract

The invention relates to a preparation method of a biodegradable polyurethane composite, and belongs to the technical field of polyurethane materials. The biodegradable polyurethane composite is prepared from polyethylene glycol and hexamethylene diisocyanate as raw materials. Polyurethane can maintain stability in water, but can be degraded in organisms; macrophages, white blood cells and other cells in organisms release oxygen ions, hydroxyl radicals and other oxyradicals to capture hydrogen atoms on a polyurethane chain, so that the polyurethane chain is broken; besides, under the action ofacidic substances and esterase in tissue fluid, polyurethane is degraded into acid and alcohol. Polyurethane prepared from polyethylene glycol as the raw material can overcome the defect of single homopolymer performance. By adjusting mass and molecular weight of different monomers, polyurethane materials with different properties can be obtained, hydrophilic performance and biocompatibility of the polyurethane materials are improved, the degradation rate is increased, controllability is changed, and degradation capability of the polyurethane materials in human bodies is improved.

Description

technical field [0001] The invention relates to a preparation method of a biodegradable polyurethane composite material, which belongs to the technical field of polyurethane materials. Background technique [0002] Biodegradable polymer material refers to a polymer material that can replace the function of some tissues or organs of the body in a safe, reliable, economical and physiologically compatible way, and the degradation products have no toxic side effects on the body. Including three sources of natural, microbial synthesis and chemical synthesis, among which chemically synthesized polymer materials have strong structure controllability and excellent performance, and have extensive research and application value. Polyurethane is a high molecular polymer containing repeated carbamate groups in the molecular main chain. It has excellent mechanical strength and bending resistance, and has a large degree of freedom in molecular structure design. It has long been favored as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/64C08G18/32
CPCC08G18/3206C08G18/4081C08G18/4286C08G18/6446C08G18/664
Inventor 林正脉
Owner 常州五荣化工有限公司
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