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Modified polylactic acid material for disposable syringe

A polylactic acid and syringe technology, which is applied in the field of polylactic acid modified materials for disposable syringes, can solve the problems of not meeting the mechanical performance requirements of the syringe material, hard quality, high brittleness, etc., and achieve simple preparation process, reasonable formula, and complete degradation Effect

Active Publication Date: 2012-12-12
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

[0004] However, at present, polylactic acid (PLA) materials generally have the disadvantages of being hard and brittle, and cannot meet the mechanical performance requirements for syringe materials in "GB 15810-2001 Disposable Sterile Syringes"

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 100kg of polylactic acid with a melt index of 6-20g / min, 5kg of polybutylene succinate with a melt index of 15-45g / min, 0.05kg of dicumyl peroxide, 2kg of cyclohexane-1,2 -Diisononyl dicarboxylate and 3kg of organic montmorillonite were added to a high-speed mixer with a rotation speed of 500r / min and stirred for 10 minutes to obtain a high-mixture, and then the high-mixture was put into a twin-screw extruder to extrude and granulate , and then water-cooled to obtain the polylactic acid modified material for disposable syringes.

Embodiment 2

[0027] 100kg of polylactic acid with a melt index of 6-20g / min, 18kg of polybutylene succinate with a melt index of 15-45g / min, 0.5kg of dicumyl peroxide, 3.5kg of cyclohexane-1, Diisononyl 2-dicarboxylate and 9kg of organic montmorillonite were added to a high-speed mixer with a rotation speed of 500r / min and stirred for 10 minutes to obtain a high-mixture, and then the high-mixture was put into a twin-screw extruder and extruded to produce granules, and then water-cooled to obtain the polylactic acid modified material for disposable syringes.

Embodiment 3

[0029] 100kg of polylactic acid with a melt index of 6-20g / min, 30kg of polybutylene succinate with a melt index of 15-45g / min, 1kg of dicumyl peroxide, 5kg of cyclohexane-1,2- Diisononyl diformate and 15kg organic montmorillonite were added into a high-mixer with a rotating speed of 500r / min and stirred for 10 minutes to obtain a high-mixture, and then the high-mixture was put into a twin-screw extruder to extrude and granulate. Then through water cooling, the polylactic acid modified material for disposable syringes is obtained.

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Abstract

The invention discloses a modified polylactic acid material for a disposable syringe, prepared by using the following ingredients: 100 weight portions of polylactic acid, 5-30 weight portions of flexibilizer, 0.05-1 weight portions of responsive solubiliser, 2-5 weight portions of plasticizer, and 3-15 weight portions of filling material. The invention has the advantages of reasonable formula, simple preparation technology, and the material can be completely degraded. The prepared modified polylactic acid material overcomes the problems of hard texture and large brittleness of polylactic acid, and keeps the characteristic of transparency, completely satisfying the mechanical property requirement of material quality of the syringe in GB15810-2001 disposable sterile syringe.

Description

technical field [0001] The invention relates to a medical polylactic acid modified material, in particular to a polylactic acid modified material for a disposable syringe. Background technique [0002] Disposable syringes are widely used because of their simple structure and convenient use. my country alone produces more than 13 billion syringes every year. Syringes are injection-molded with polypropylene or polyethylene materials, but the disposal of syringes after use is generally incineration, which is a great waste of petroleum resources. Polylactic acid is a biodegradable polymer prepared by chemical synthesis from renewable plant resources. It is a thermoplastic aliphatic polyester with a glass transition temperature and melting point of about 60°C and 175°C, respectively. It is a hard polymer in a glassy state, and its thermal properties are similar to polystyrene. [0003] The polylactic acid (PLA) material has good biocompatibility, biodegradability, and non-toxi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L67/02C08K5/14C08K5/12C08K9/04C08K3/34
Inventor 张晓董合军李静李显明曹明
Owner CHENGDU XINJIN SHIFENG MEDICAL APP ANDINSTR CO LTD
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