Preparation method of high temperature resistant medical deodorization material

Abstract

The invention discloses a preparation method of a high temperature resistant medical deodorization material. The preparation method comprises the steps of firstly adding PVC, PET, dioctyl phthalate, lecithin, polycarbonate and barium stearate into a mixer, stirring and mixing uniformly, then adding the mixture into a reaction still, adding fiberglass, 3a-methyl-5,6-dihydro-4H-isobenzofuran-1,3-dione, aluminium oxide, polyester fiber and potassium 3-sulphonatopropyl acrylate, heating and stirring under a negative pressure condition, then performing temperature rise reaction under a normal pressure condition, then cooling to 0 DEG C, then drying, smashing, stifling by using ammonia gas, and then performing extrusion molding in a twin-screw extruder, thus obtaining the high temperature resistant medical deodorization material. The high temperature resistant medical deodorization material prepared by the preparation method provided by the invention has good high temperature resistance and deodorization performance, thus further expanding the application of the material.

Description

technical field [0001] The invention belongs to the field of medical materials, in particular to a preparation method of a high-temperature-resistant medical deodorant material. Background technique [0002] Polyvinyl chloride, referred to as PVC in English, is a thermoplastic resin polymerized by vinyl chloride under the action of an initiator. It is a homopolymer of vinyl chloride. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins. PVC is a white powder with an amorphous structure and a small degree of branching. The molecular weight of industrially produced PVC is generally in the range of 50,000 to 120,000, with a large polydispersity, and the molecular weight increases with the decrease of the polymerization temperature; there is no fixed melting point, it starts to soften at 80-85°C, and becomes viscoelastic at 130°C , 160 ~ 180 ℃ began to change into a viscous flow state; good mechanical properties, tens...

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Problems solved by technology

However, it has poor stability to light and heat. When it is above 100°C or exposed to the sun for a long time, it will decompose to produce hydrogen chloride, and further autocatalyze the decomposition, causing discoloration and rapid decline in physical and mechanical properties. In practical applications, stabilizer must be added. agent to improve heat and light stability

In the medical field, due to the particularity of the use environment, there are more application requirements for PVC materials, such as high temperature resistance, deodorization, etc., but currently commonly used PVC materials cannot achieve high temperatures in high temperature environments. Good application stability, and deodorization performance is rarely involved, which requires the development of a composite material with a variety of special properties to meet the needs of the medical field

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