Medical composite antimicrobial tube and preparation method thereof

Abstract

The invention discloses a medical composite antimicrobial tube and a preparation method thereof. The composite antimicrobial tube comprises the following components in parts by weight: 40-50 parts of PVC (polyvinyl chloride), 10-20 parts of polycarbonate, 30-40 parts of PE (polyethylene), 8-15 parts of PET (polyethylene terephthalate), 3-7 parts of silver powder, 0.8-2 parts of potassium phosphate, 1-4 parts of calcium oxide, 1-4 parts of bis thiodipropionate, 5-10 parts of butyl rubber, 0.8-2 parts of stearic acid, 3-8 parts of titanium dioxide, 3-7 parts of polyethylene wax, 1-5 parts of epoxy soybean oil, 0.8-2 parts of barium stearate, 1-5 parts of polyester fiber and 2-6 parts of maleic anhydride. The preparation method comprises the following steps: uniformly mixing the components in a stirrer according to parts by weight, adding into a grinder, grinding, discharging, and carrying out extrusion molding by an extruder. The medical composite antimicrobial tube disclosed by the invention has favorable mechanical properties and mold resistance, and can be widely used in the field of medical treatment.

Description

technical field [0001] The invention belongs to the technical field of medical material preparation, and in particular relates to a medical composite antibacterial tube and a preparation method thereof. Background technique [0002] Most of the plastic pipes currently used are PVC plastic pipes, which have the advantages of easy processing, convenient bonding, low cost, good rigidity and corrosion resistance. However, due to the characteristics of the molecular structure of PVC itself, its glass transition temperature is relatively low. It is characterized by high brittleness, poor low temperature resistance, poor weather resistance, easy to crack, and easy to break under a certain pressure for a long time. Therefore, people mix and modify PVC resin with various tougheners to improve its impact resistance. , but the corresponding rigidity decreases, the degree of stretching decreases, and the advantages of PVC itself are lost. Another commonly used plastic pipe is polypropy...

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Problems solved by technology

[0002] Most of the plastic pipes currently used are PVC plastic pipes, which have the advantages of easy processing, convenient bonding, low cost, good rigidity and corrosion resistance. However, due to the characteristics of the molecular structure of PVC itself, its glass transition temperature is relatively low. It is characterized by high brittleness, poor low temperature resistance, poor weather resistance, easy to crack, and easy to break under a certain pressure for a long time. Therefore, people mix and modify PVC resin with various tougheners to improve its impact resistance. , but the corresponding rigidity decreases, the degree of stretching decreases, and the bit of PVC itself is lost.

Another commonly used plastic pipe is polypropylene pipe, which is the same as PVC pipe. Although it can meet the hygienic requirements, long-term use cannot inhibit and kill the bacteria on the pipe wall. Finally, a considerable number of microorganisms will adhere to and breed on the inner surface of the pipe. When this pipe is used in the medical field, it needs to be cleaned and sterilized frequently to ensure that it can meet the medical requirements. pipe, while ensuring the mechanical properties of the pipe

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