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Radiation vulcanizing method for environment-friendly type medical rubber products

A kind of rubber products, environmental protection technology, applied in the direction of medicine packaging, medicine containers, medical packaging, etc., can solve the problems of poor use safety, complex process, poor product environmental protection, etc., to achieve radiation curing time reduction, simple formula, Air tightness and high cleanliness effect

Inactive Publication Date: 2008-01-16
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To sum up, the existing medical rubber products and their preparation methods have complicated process, poor product environmental protection, weak use safety and low service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: Radiation vulcanization processing of medical rubber bottle stopper.

[0016] Rubber stoppers are generally used as seals for pharmaceutical product packaging to prevent contamination and leakage of pharmaceuticals during storage, transportation and use. Such as infusion stoppers, powder injection stoppers, lyophilized agent stoppers, blood test tube rubber stoppers, infusion pump rubber stoppers, dental anesthesia syringe pistons, prefilled injection syringe pistons, insulin syringe pistons and various aerosol bottles (Aspirator) seals, etc.

[0017] Formula: styrene-butadiene rubber (SBR), 100; carbon black FJ, 20; diethylene glycol di(meth)acrylate, 9.

[0018] Using ordinary open mill and internal mixer mixing process, the radiation crosslinking additives and fillers are evenly dispersed into the SBR rubber matrix, deglue, and preformed.

[0019] At normal temperature, normal pressure, and air atmosphere, the extruded preformed rubber bottle stopper ...

Embodiment 2

[0031] Example 2: Radiation vulcanization of plungers for sterile single-use syringes.

[0032] Formula: nitrile rubber (NBR), 100; carbon black FJ, 10; diethylene glycol di(meth)acrylate, 3; pentaerythritol tetra(meth)acrylate, 5; ultramarine blue, 0.2.

[0033]The internal mixer is used to complete the mixing process of rubber materials, radiation crosslinking additives, fillers, etc., deglue, and extrude the products. Under normal temperature, normal pressure, and air atmosphere, the electron accelerator is used to perform one or more radiation vulcanization treatments on the formed NBR rubber until the final full vulcanization of the NBR rubber is completed. The total radiation dose is 400kGy.

[0034] Compared with rubber products prepared by sulfur vulcanization and peroxide vulcanization, the radiation vulcanized syringe piston has excellent physical and mechanical properties, chemical resistance stability, good sealing and sliding performance, and stable quality. Ste...

Embodiment 3

[0035] Example 3: Radiation processing of blood transfusion tubes.

[0036] Formula: ethylene propylene rubber (EPDM), 100; white carbon black, 20; pentaerythritol tetra(meth)acrylate, 10; graphite, 5.

[0037] The open mill is used to complete the mixing process of rubber materials, radiation crosslinking additives, fillers, etc., debinding, and product molding. In normal temperature, normal pressure, and air atmosphere, the formed blood transfusion hose is subjected to one or more radiation vulcanization treatments with gamma rays, and the radiation dose is 400kGy in total.

[0038] The irradiated blood transfusion hose has improved chemical resistance, is sterile, has no heat source, has no acute systemic toxicity, has no surface precipitates, and has no irritating odor, and fully meets the medical and health standards.

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Abstract

The invention relates to a process method of radiation vulcanization which applies the high energy radiation technology in medical rubber products, in particular to a vulcanization method of the environment protecting medical rubber products that can improve the safety and not-pollution property of the medical rubber products. Green rubber compound, reactive environment protecting cross-linking coagent, filler and compounding agent are mixed in a regulated weight ratio, and then are mixed in a mixing facility, so that non cross-linked rubber profiles are formed preliminarily. The non cross-linked rubber profiles are treated in radiation vulcanization for once or a plurality of times and then become the medical rubber products. The invention has the advantages of good safety, high chemical stability, air tightness and cleanness, no residue precipitation with irritability, volatility and anaphylaxis, ozonation resistance, crack resistance, heat resistance and fine mechanical property, and also has the advantages that the time of the radiation vulcanization is reduces, the energy is saved, fast radiation disinfection proposal method can be accepted.

Description

Technical field: [0001] The invention relates to a radiation vulcanization processing method applying high-energy radiation technology to medical rubber products, in particular to an environment-friendly vulcanization method for medical rubber products to improve the safety and non-pollution of medical rubber products. Background technique: [0002] With the development of society, there are more and more types of rubber products used in the medical and health field, such as various medicinal rubber stoppers, pistons for sterile syringes, syringe sealing rubber seals, hoses, catheters, seals, valves, infants, etc. Pacifiers, blood transfusion tubes, etc. Ideal medical rubber products not only have good physical properties, but also have the following properties: no active ingredients in the drug can be absorbed, and the chemical ingredients extracted from the rubber cannot change the quality of the drug; there must be no polluting exudates or volatiles It is resistant to st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24C08J3/28C08L9/06C08L23/28C08L23/16C08L27/12C08L33/08C08L83/04C08L75/04C08L71/00C08L81/00A61L33/06
Inventor 王庆国
Owner QINGDAO UNIV OF SCI & TECH
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