Medical-grade PVC (polyvinyl chloride) cable material and preparation technique thereof

Abstract

The invention discloses a medical-grade PVC (polyvinyl chloride) cable material and a preparation technique thereof. The medical-grade PVC cable material is prepared from, by weight, 90-110 parts of PVC resin, 45-55 parts of calcium carbonate, 75-85 parts of a plasticizer, 2-8 parts of Ca-Zn composite stabilizer, 2-10 parts of a flame retardant, 0.1-0.9 part of a lubricant , 1-3 parts of aids, and2-8 parts of pigments. The preparation technique comprises: opening a vat cover, adding calcium carbonate, adding PVC resin, and adding aids and pigments; starting a powder dispensing motor, and adding a plasticizer accounting for two thirds of the total quantity after uniform powder is attained; adding the rest plasticizer, and discharging to a storage bucket; setting body temperature of an extrusion granulator, and starting a main motor to carry out feeding and dicing; granulating by extruding, and packaging. The medical-grade PVC cable material has good mechanical and physical properties,good electrical properties and excellent processibility.

Description

technical field [0001] The invention relates to the technical field of polymer materials and wire and cable materials, in particular to a medical-grade PVC cable material and a preparation process thereof. Background technique [0002] Medical wire products mainly refer to medical equipment or rescue wires used for patient operations, treatment, and monitoring purposes. According to the medical level used, it can be divided into: blood transfusion level, invasive surgery, non-invasive monitoring, internal use of medical equipment, etc. Different levels of use have different requirements for materials. [0003] The overall requirements for medical cables are mainly in the following categories: soft and flexible, low frictional resistance, smooth and round appearance; small size, light weight, high flexibility, intuitive and safe; sterilization requirements: suitable for EtO (ethylene oxide), high pressure Disinfection, low temperature treatment, CIDEX (glutaraldehyde) immers...

AI Technical Summary

Problems solved by technology

[0004] At present, existing medical cables generally have defects such as poor flexibility, high frictional resistance, poor environmental performance, poor mechanical and physical properties, and poor electrical properties, which need to be effectively improved.

[0005] Chinese Patent No. CN107674374A discloses a polyetheretherketone cable material and its preparation process, including polyetheretherketone, polyphenylene sulfide, modified potassium hexatitanate whiskers and inorganic nano-nucleating agent, the modified hexatitanium Potassium hexa-titanate whiskers are prepared by modifying potassium hexatitanate whiskers with a titanate coupling agent to provide a polyether ether ketone cable material with good processability, high strength and high wear resistance, but this application is still not yet available. With soft flexibility and excellent electrical properties, effective improvement is needed

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