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Degradable material for preparing outside sleeve of disposable injector

A technology for degrading materials and syringes, applied in the field of degradable materials, can solve the problems of slow crystallization, low strength, large molecular weight, etc., and achieve the effects of solving pollution, stable performance and reasonable formula

Active Publication Date: 2012-01-18
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

Polyhydroxyalkanoate composite materials will only degrade under the condition of water, bacteria and oxygen at the same time, and completely biodegrade into carbon dioxide, water and organic matter, but it is difficult to degrade in general indoor environment
However, if only poly 3-hydroxybutyrate is used alone to prepare disposable syringe jackets, it will be quite difficult to produce disposable syringe jackets due to the characteristics of poly 3-hydroxybutyrate with large molecular weight, slow crystallization, and low strength. Big

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh 100kg of poly-3-hydroxybutyrate, 10kg of polyglycol adipate, 0.07kg of antioxidant 1010, 0.14kg of antioxidant 168, 0.3kg of ethylene bisstearamide, two (3,4-Dimethylbenzylidene) sorbitol 0.2kg, acetyl tributyl citrate 20kg, POE (ethylene-octene copolymer) 5kg, the above weighed raw materials in a high-speed mixer Mix for 5 to 7 minutes to fully disperse the raw materials to obtain a mixture; place the mixed mixture in a parallel twin-screw extruder for melt extrusion and granulation; in this process: temperature control starts from the feeding section, Respectively 185℃, 190℃, 195℃, 195℃, 190℃, 180℃; the main engine speed is 380r / min, the feeding speed is 200r / min; the water-cooled pellets are used to obtain the degradable material for preparing disposable syringe jacket .

Embodiment 2

[0018] Weigh 100kg of poly-3-hydroxybutyrate, 13kg of polydiethylene adipate, 0.1kg of antioxidant 1010, 0.2kg of antioxidant 168, 0.5kg of ethylene bisstearamide, two (3,4-Dimethylbenzylidene)sorbitol 0.25kg, acetyl tributyl citrate 25kg, POE (ethylene-octene copolymer) 8kg, and then prepared according to the preparation method described in Example 1 for The biodegradable material for preparing disposable syringe jacket.

Embodiment 3

[0020] Weigh 100kg of poly-3-hydroxybutyrate, 15kg of polydiethylene adipate, 0.15kg of antioxidant 1010, 0.3kg of antioxidant 168, 0.8kg of ethylene bisstearamide, two (3,4-Dimethylbenzylidene)sorbitol 0.3kg, acetyl tributyl citrate 30kg, POE (ethylene-octene copolymer) 10kg, and then prepared according to the preparation method described in Example 1 for The biodegradable material for preparing disposable syringe jacket.

[0021] Corresponding tests were made between the material of the present invention and the commonly used syringe jacket material (polypropylene material), and the following data was obtained (see Table 1).

[0022] Table 1 Comparison table of the performance of the material of the present invention and the performance test data of commonly used polypropylene materials

[0023] Test items The degradable material of the present invention Commonly used polypropylene materials transparency(%)83.6~84.585.7 Haze (%)27.3~28.526.5 Izod impact strength (J / m)89~941...

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Abstract

The invention relates to a degradable material for preparing an outside sleeve of a disposable injector. The composite material consists of degradable poly(3-hydroxybutyrate), poly(diethylene glycol adipate) and other auxiliaries. The formula of the degradable material comprises the following components in parts by weight: 100 parts of poly(3-hydroxybutyrate), 10-15 parts of poly(diethylene glycol adipate), 20-30 parts of plasticizer, 0.2-0.3 part of nucleating agent, 0.2-0.5 part of antioxidant, 0.3-0.8 part of lubricating agent and 5-10 parts of flexibilizer. The degradable material provided by the invention has reasonable formula, and the physical property and chemical property of the degradable material meet corresponding standards; and the material is the degradable material, has fast degradation speed and can be destroyed by self, and decomposed products have no harm on environment.

Description

Technical field [0001] The present invention relates to the field of degradable materials, in particular to a degradable material used for preparing disposable syringe jackets. Background technique [0002] The commonly used material for disposable syringe covers is petroleum-based plastics (such as polypropylene). Although it solves the problem of cross-infection, it is basically treated by incineration after use, which brings serious pollution to the environment. At present, many manufacturers are making great efforts in pollution-free degradation of syringe jackets. Domestic manufacturers have introduced disposable syringe jackets made of degradable materials such as polylactic acid, but the production cost is relatively high. The present invention uses another A kind of degradable material—poly-3-hydroxybutyrate. This material is a kind of biopolymer material synthesized directly in microorganisms through microbial fermentation using renewable agricultural products and agricu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02B29B9/06B29C47/92B29C48/92
Inventor 杨晓龙董合军张晓
Owner CHENGDU XINJIN SHIFENG MEDICAL APP ANDINSTR CO LTD
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