Transparent PP biomaterial with low-adsorption, high-temperature anti-sagging and antibacterial performance and preparation method thereof

Abstract

The invention discloses a transparent PP biomaterial with low-adsorption, high-temperature anti-sagging and antibacterial performance and a preparation method thereof. The biomaterial provided by the invention is prepared from the following main components in parts by weight: 95 to 99 parts of polypropylene, 0.3 to 1 part of polyether modified polydimethylsiloxane, 0.1 to 0.5 part of dipropylene glycol monomethyl ether, 0.5 to 1 part of a sorbitol transparent nucleating agent, 0.1 to 0.3 part of an antioxidant, 0.1 to 1 part of a high-temperature anti-sagging agent, 0.001 to 0.005 part of a nano-silver solution and 0.05 to 0.2 part of a processing agent. The main manufacturing process comprises the steps of processing before mixing materials, stirring by a cooling machine, extruding, cutting materials and packaging. The PP biomaterial provided by the invention is great in rigidity and high in transmittance of light, has low-adsorption and high-temperature anti-sagging performance, can realize resistance to multiple kinds of bacteria for a long time, and can be widely applied to high-precision and high-requirement biological and medical materials such as colorless low-adsorption centrifuge tubes, DNA test centrifuge tubes, cell culture plates, biomedicine transfer pipettes, tapered suckers and the like.

Description

technical field [0001] The invention relates to a biological material, and mainly relates to a transparent PP material with low adsorption, anti-sagging at high temperature and antibacterial and a preparation method thereof. Background technique [0002] At present, all low-adsorption and antibacterial PP technologies used in biomedical research on the market are monopolized by foreign countries, with high product prices and long procurement cycles. China has been committed to the development of such materials for several years, and there have been obvious breakthroughs in some fields, but the quality is still lacking, such as film residue in the container or when pipetting, wasting precious experimental materials; The surface tension of plastic products becomes smaller, but the internal additives appear to precipitate and float, resulting in serious sagging; ordinary nano-silver particle antibacterial agents have oxidative failure due to long test cycles, etc., which limi...

AI Technical Summary

Problems solved by technology

[0002] At present, all low-adsorption and antibacterial PP technologies used in biomedical research on the market are monopolized by foreign countries, with high product prices and long procurement cycles

China has been committed to the development of such materials for several years, and there have been obvious breakthroughs in some fields, but the quality is still lacking, such as film residue in the container or when pipetting, wasting precious experimental materials; The surface tension of plastic products becomes smaller, but the internal additives appear to precipitate and float, resulting in serious sagging; ordinary nano-silver particle antibacterial agents have oxidative failure due to long test cycles, etc., which limit the use of domestic materials

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