A thermoplastic elastomer gasket material and its production method

Abstract

The invention relates to a thermoplastic elastomer gasket material. The thermoplastic elastomer gasket material is produced from aliphatic polyketone resin (POK), ethylene propylene diene monomer (EPDM), a hydrogenated styrene-butadiene styrene copolymer (SEBS), extending oil, a nanofiller, a silane coupling agent, an antioxidant and a lubricant. The thermoplastic elastomer gasket material is characterized by containing the following components in percentage by weight: 35%-75% of the aliphatic polyketone resin (POK), 10%-20% of the hydrogenated styrene-butadiene styrene copolymer (SEBS), 5%-10% of the ethylene propylene diene monomer (EPDM), 10%-20% of the extending oil, 2%-15% of the nanofiller, 0.1%-2% of the silane coupling agent, 0.2%-1.0% of the antioxidant and 0.2%-2% of the lubricant. The thermoplastic elastomer gasket material has the injection molding characteristic, the complicated steps of blending, vulcanization, edge removal, silicification and the like in the production of a traditional rubber gasket and rubber plug are reduced, the one-step formation is realized, the production cost is low, meanwhile, the risk caused by the complicated production process is reduced, and the thermoplastic elastomer gasket material simultaneously has the characteristics of the rubber gasket and the rubber plug and has relatively good sealing property, rebound resilience and ageing resistance.

Description

technical field [0001] The invention relates to an injection moldable thermoplastic elastomer gasket material, which is mainly used for oral liquid and nutrient solution gaskets in the pharmaceutical packaging industry, gaskets in the field of pesticide packaging, and the like. Background technique [0002] With the development of medical and health services, the requirements for oral liquid and infusion medical devices are becoming more and more detailed, which is reflected in the safety of infusion containers, compatibility of liquid medicine, convenience of transportation, processing adaptability and ease of use. etc. Drug packaging gaskets and rubber plugs are currently mainly made of butyl rubber and silicone rubber. The processing of butyl rubber needs to go through processing steps such as mixing, refining, vulcanization, flash removal, and siliconization. The formula of butyl rubber stopper is relatively complicated, and the processing aids, anti-aging agents, vulca...

AI Technical Summary

Problems solved by technology

The formula of butyl rubber stopper is relatively complicated, and the processing aids, anti-aging agents, vulcanizing agents, etc. in it have the risk of being precipitated and contaminating the liquid medicine

The processing process of butyl rubber plugs is relatively complicated, the single-product processing cycle is long, labor-intensive, material resources are required, and the scrap rate is high. In view of the thermosetting characteristics of butyl rubber, the scraps produced by it are difficult to recycle.

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