Medical Main Raw Material Price Trend – Acrylonitrile Butadiene Styrene(ABS) Leave a comment

Medical Materials-Plastic

Acrylonitrile Butadiene Styrene(ABS). The basic requirements of medical plastics are chemical stability and biological safety, because they are in contact with drugs or the human body. The components in the plastic material cannot be precipitated out into the liquid medicine or the human body, will not cause toxicity and damage to tissues and organs, and are non-toxic and harmless to the human body. In order to ensure the bio-safety of medical plastics, medical plastics that are usually sold on the market are certified and tested by medical authorities, and users are clearly informed which grades are medical grade.

The application of plastics in medical plastics has a low cost and can be reused without disinfection. It is suitable for use as raw materials for the production of disposable medical devices; it is simple to process and can be processed into a variety of useful structures by its plasticity, while metal and glass are difficult Manufactured into products with complex structures; tough, flexible, not as easily broken as glass; with good chemical inertness and biological safety. These performance advantages make plastics have a wide range of applications in medical equipment, including polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), polycarbonate (PC), ABS, Polyurethane, polyamide, thermoplastic elastomer, polysulfone and polyether ether ketone, etc. Blending can improve the performance of plastics and make the best performance of different resins manifested, such as polycarbonate/ABS, polypropylene/elastomer and other blending modification. The 7 commonly used medical plastics are polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS) and K resin, acrylonitrile-butadiene-styrene (ABS), Polycarbonate (PC) and polytetrafluoroethylene (PTFE) general plastics are synthesized and come out of the synthesis tower of a large petrochemical plant. They are all flour-like powders and cannot be used to directly produce products. This is what people often say The composition of fat extracted from tree sap is the same, also called resin, also called powder. This is a pure plastic with poor fluidity, low thermal stability, easy aging and decomposition, and not resistant to environmental aging. In order to improve the above defects, heat stabilizers, anti-aging agents, anti-ultraviolet agents, plasticizers, etc. are added to the resin powder, which is modified by granulation to increase its fluidity, and produce special products suitable for various processing techniques. Performance, different grades of plastic varieties. The plastic materials commonly used by medical device manufacturers are all modified plastic particles that can be used directly. For products with special properties that are not available in the market, equipment factories can introduce granulation production lines and process and produce plastic granules through different formulation designs. Therefore, there are many grades of the same type of plastic. According to the processing method, there are injection molding grade, extrusion grade, and blown film grade; according to performance, there are high rigidity, toughening, etc. . The components in the plastic material cannot be precipitated out into the liquid medicine or the human body, will not cause toxicity and damage to tissues and organs, and are non-toxic and harmless to the human body. Due to contact with the liquid medicine Or in contact with the human body, the basic requirements of medical plastics are chemical stability and biological safety. In order to ensure the bio-safety of medical plastics, medical plastics that are usually sold on the market are certified and tested by medical authorities, and users are clearly informed which grades are medical grade. At present, there are still quite a few medical plastic materials in China that have not undergone strict biosafety certification, but with the gradual improvement of laws and regulations, these situations will be improved. Medical plastics in the United States usually pass FDA certification and USPVI biological testing, and medical-grade plastics in my country are usually tested by Shandong Medical Device Testing Center. According to the structure and strength requirements of the equipment products, we choose the appropriate plastic type and the appropriate brand, and determine the processing technology of the material. These properties include processing performance, mechanical strength, use cost, assembly method, sterilization and so on. The processing properties and physical and chemical properties of several commonly used medical plastics are briefly introduced as follows:

ABS, Acrylonitrile Butadiene Styrene copolymers

Acrylonitrile Butadiene Styrene(ABS) has certain rigidity, hardness, impact resistance and chemical resistance, radiation resistance and resistance to ethylene oxide disinfection. The medical application of ABS is mainly used as surgical tools, roller clamps, plastic needles, tool boxes, diagnostic devices and hearing aid housings, especially the housings of some large-scale medical equipment.

Acrylonitrile Butadiene Styrene(ABS) has certain rigidity, hardness, impact resistance and chemical resistance, radiation resistance and resistance to ethylene oxide disinfection. The medical application of ABS is mainly used as surgical tools, roller clamps, plastic needles, tool boxes, diagnostic devices and hearing aid housings, especially the housings of some large-scale medical equipment. In the medical field, ABS is usually processed by injection molding, and there are few blown film and extrusion tube applications. It is synthesized from three chemical monomers: acrylonitrile, butadiene and styrene. The respective characteristics of these three components make ABS have good comprehensive mechanical properties. Acrylonitrile makes ABS have good resistance

Chemical corrosion and surface hardness, butadiene makes ABS tough, styrene makes it have good processing and dyeing properties. It mainly depends on the ratio of the three monomers and the molecular structure in the two phases. This allows great flexibility in product design, and as a result, hundreds of ABS materials of different qualities have been produced on the market. It has good cold resistance, oil resistance, water resistance, and chemical stability. Water, inorganic salts, alkalis, and acids have almost no effect on ABS. It will dissolve or form emulsions in ketones, aldehydes, esters, and chlorinated hydrocarbons. It is insoluble in most alcohols and hydrocarbon solvents, but it will soften and swell in long-term contact with hydrocarbons.

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