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Thermoplastic elastomer material and plastic plug made of same

A thermoplastic elastomer, main material technology, applied in special packaging items, packaging item types, medical containers, etc., can solve problems such as high cost and complex process, achieve recycling costs, ensure internal clarity, and ensure compatibility. sexual effect

Inactive Publication Date: 2011-06-08
JIANGSU RUNDE MEDICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still defects of high cost and complicated process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The thermoplastic elastomer material of the present embodiment is made from the following components:

[0024] (1) The main material is cross-linkable EPDM rubber with a mass percentage of 55%;

[0025] (2) The main filler is polypropylene with a mass percentage of 15%;

[0026] (3) The toughening agent is SEBS with a mass percentage of 30%.

[0027] Among them, EPDM rubber is a terpolymer of ethylene, propylene and non-conjugated diene, which has excellent vulcanization characteristics and low cost. Polypropylene is non-toxic, odorless, low density, strong

[0028] http: / / baike.baidu.com / view / 91950.htm, stiffness, hardness and heat resistance are better than low-pressure polyethylene

[0029] http: / / baike.baidu.com / view / 11277.htm, corrosion resistance

[0030] http: / / baike.baidu.com / view / 31398.htm and insulated. SEBS is a linear three-block copolymer with polystyrene as the end segment and ethylene-butene copolymer obtained by hydrogenation of polybutadiene as the...

Embodiment 2

[0032] The thermoplastic elastomer material of the present embodiment is made from the following components:

[0033] (1) The main material is binary ethylene propylene rubber with a mass percentage of 45%;

[0034] (2) The main filler is 15% polypropylene and 10% polystyrene by mass percentage;

[0035] (3) toughening agent is the SBS that mass percent is 28%;

[0036] (4) The secondary filler is a crosslinking agent, that is, 2% peroxide.

[0037] Among them, binary ethylene-propylene rubber is copolymerized from monoolefin ethylene and propylene. Polystyrene resin has high transparency, easy coloring, good processing fluidity, good rigidity and good chemical corrosion resistance. SBS can be in contact with water, weak acid, alkali, etc. It has excellent tensile strength, good processability and low cost.

Embodiment 3

[0039] The thermoplastic elastomer material of the present embodiment is made from the following components:

[0040] (1) The main material is cross-linkable EPDM rubber with a mass percentage of 60%;

[0041] (2) The main filler is polypropylene with a mass percentage of 12%;

[0042] (3) the toughening agent is SEBS and SBS that the total mass percentage is 25%;

[0043] (4) The secondary filler is a cross-linking agent and a plasticizer, the cross-linking agent is 1.5% sulfur, and the plasticizer is 1.5% white oil.

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PUM

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Abstract

The invention discloses a thermoplastic elastomer material and a plastic plug made of same. The thermoplastic elastomer material consists of the following components in percentage by weight: 40 to 60 percent of main material, 8 to 27 percent of main filler, 25 to 35 percent of toughening agent and 0 to 6.5 percent of auxiliary filler, wherein the main material is ethylene propylene rubber; the main filler contains polypropylene; and the toughening agent contains styrene, ethane, butane and styrene block copolymer (SEBS). The thermoplastic elastomer material has high elasticity, strength and resilience of rubber, and has the characteristic of capacity of being subjected to injection molding; compared with the traditional process, the method has the advantages of greatly shortening working time; and the thermoplastic elastomer material has the advantages of environmental friendliness, nontoxicity, safety, wide hardness range, good dyeing property, soft touch, weather resistance, fatigue resistance, temperature tolerance, and excellent processability, is not needed to be sulfurized, and can be recycled, so that the cost is reduced and the market competition is improved.

Description

technical field [0001] The invention relates to a thermoplastic elastomer material and a medical rubber stopper made of it. Background technique [0002] Butyl rubber stoppers have relatively reliable biological properties, good airtight properties, and relatively stable chemical properties, so they are widely used in medical rubber stoppers in the medical field. However, there are also some problems with butyl rubber stoppers, such as powder injections sensitive to some chemical and biological activities such as cefotiam hydrochloride; some infusion preparations with strong acidity and alkalinity such as sodium bicarbonate injection; complex infusion preparations such as For traditional Chinese medicine injections, the use of butyl rubber stoppers still cannot meet the requirements for turbidity and clarity of the medicines, that is, the compatibility requirements between the butyl rubber stoppers and these medicines are unqualified. To solve this problem, a lot of researc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/12C08L23/08C08L53/02C08L25/06A61J1/14
Inventor 朱善本
Owner JIANGSU RUNDE MEDICAL MATERIALS
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