High-transparency and high-toughness degradable material for outer tube of disposable syringe

A technology for degrading materials and syringes is applied in the field of high-transparency and high-toughness degradable materials for disposable syringe jackets, which can solve the problems of poor toughness and low transparency, and achieve the effects of stable performance, reasonable formula and good performance.

Active Publication Date: 2012-01-25
CHENGDU XINJIN SHIFENG MEDICAL APP ANDINSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current polylactic acid materials still have some problems: low transparency and poor toughness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Weigh 100kg of polylactic acid, and dry it for 24 hours at a temperature of 40°C and a vacuum of 0.05MPa; then mix it with 5kg tributyl citrate, 5kg POE, 0.1kg bis(3,4-dimethylphenyl Methyl)sorbitol, 0.1kg (2,4-di-tert-butylphenyl)phosphite triester, 0.05kg tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] Add pentaerythritol ester and 0.1kg ethylene bisstearamide together into the high-mixer and stir for 3-5 minutes to obtain high-mixture for later use; finally, put the obtained high-mixture into a twin-screw extruder to extrude and granulate, and the granulation temperature : 170-220°C, screw speed: 350-400r / min, and then water-cooled to obtain a high-transparency, high-toughness degradable material for a disposable syringe jacket.

Embodiment 2

[0047] Weigh 100kg of polylactic acid and dry it for 24 hours at a temperature of 45°C and a vacuum of 0.05MPa; then mix it with 12kg of tributyl citrate, 10kg of POE, 0.2kg of bis(3,4-dimethylbenzene Methyl)sorbitol, 0.2kg (2,4-di-tert-butylphenyl)phosphite triester, 0.1kg tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] Add pentaerythritol ester and 0.5kg ethylene bisstearamide together into the high-mixer and stir for 3-5 minutes to obtain a high-mixture for later use; finally put the obtained high-mixture into a twin-screw extruder to extrude and granulate, and the granulation temperature : 170-220°C, screw speed: 350-400r / min, and then water-cooled to obtain a high-transparency, high-toughness degradable material for a disposable syringe jacket.

Embodiment 3

[0049] Weigh 100kg of polylactic acid, and dry it for 24 hours at a temperature of 50°C and a vacuum of 0.05MPa; then mix it with 20kg tributyl citrate, 15kg POE, 0.3kg bis(3,4-dimethylphenyl Methyl)sorbitol, 0.3kg (2,4-di-tert-butylphenyl)phosphite triester, 0.15kg tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] Add pentaerythritol ester and 1kg ethylene bisstearamide together into the high-mixer and stir for 3-5 minutes to obtain a high-mixture; finally put the obtained high-mixture into a twin-screw extruder to extrude and granulate. The granulation temperature is: 170-220°C, screw speed: 350-400r / min, and then water-cooled to obtain a high-transparency, high-toughness degradable material for a disposable syringe jacket.

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Abstract

The invention discloses a high-transparency and high-toughness degradable material for the outer tube of a disposable syringe, which is characterized in that the high-transparency and high-toughness degradable material consists of the following raw materials by weight portions: 100 portions of polylactic acid, 5-20 portions of plasticizer, 5-15 portions of toughening agent, 0.1-0.3 portion of nucleating agent, 0.2-0.5 portion of antioxidant and 0.1-1 portion of lubricant. The high-transparency and high-toughness degradable material for the outer tube of the disposable syringe has the advantages that the formula is reasonable, the transparency and the toughness are high, the material is degradable, the degradation speed is fast, the syringe can be destroyed automatically and the decomposition products do no harm to the environment.

Description

technical field [0001] The invention relates to the field of medical materials, in particular to a high-transparency and high-toughness degradable material for a disposable syringe jacket. Background technique [0002] The commonly used materials for disposable syringes used today are petroleum-based plastics (such as polypropylene). Although the problem of cross-infection has been solved, the used ones are basically disposed of by incineration, which brings serious pollution to the environment. Polylactic acid is a biodegradable and environmentally friendly aliphatic polyester. The renewability of its synthetic raw materials and low pollution in the production process provide an excellent basis for the development and application of polylactic acid. It is very advantageous in the application of molecular materials. At present, many manufacturers are making great efforts in degradation. Domestic manufacturers have introduced disposable syringes made of polylactic acid degra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L23/08C08K5/00C08K5/11C08K5/526C08K5/134C08K5/20
Inventor 杨晓龙
Owner CHENGDU XINJIN SHIFENG MEDICAL APP ANDINSTR CO LTD
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