Antibacterial mildew-proof high-temperature vulcanized silicone rubber and preparation method thereof

A high-temperature vulcanization, antibacterial and anti-mildew technology, applied in the field of rubber material manufacturing, can solve the problems of short anti-bacterial duration, narrow application area, insufficient mechanical and physical properties of anti-bacterial and anti-mildew room temperature silicone rubber, etc., to achieve long-lasting sterilization effect and high usability wide effect

Inactive Publication Date: 2020-12-11
JIANGSU TIANCHEN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems such as short antibacterial duration, single antibacterial property, and easy drug resistance in the preparation of the above antibacterial and mildew-proof silicone rubber, and the defects such as insufficient mechanical and physical properties of the antibacterial and mildew-proof room temperature silicone rubber, and narrow applicable areas, etc., provides an antibacterial Preparation method of mildew-resistant high-temperature vulcanized silicone rubber

Method used

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  • Antibacterial mildew-proof high-temperature vulcanized silicone rubber and preparation method thereof
  • Antibacterial mildew-proof high-temperature vulcanized silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In the kneader, add 100 parts of vinyl molar percentages and be 0.10% methyl vinyl polysiloxane and 0.3 part of zinc stearate with a molecular weight of 600,000, stir for 5 minutes; then 40 parts of fumed white carbon black, 2 1 part of hydroxyl silicone oil, added in 4 times, fully stirred after each addition; then 1.2 parts of silver-loaded nano-titanium dioxide, 0.8 parts of polyhexamethylene biguanide hydrochloride and 0.25 parts of KH-151 and KH-560 were mixed The paste, after kneading and molding, is heated to 150°C and kneaded for 1 hour, kept at the temperature and evacuated for 0.5 hours, cooled to below 80°C with cooling water and discharged, cooled to room temperature and filtered to obtain a silicone rubber mix.

[0020] Add 1.5% bis-penta-curing agent evenly into the rubber mixture with an open mill, weigh it, place it in a mold for vulcanization, and vulcanize at 175°C for 5 minutes.

Embodiment 2

[0022] In the kneader, add 100 parts of vinyl molar percentages and be 0.12% methyl vinyl polysiloxane and 0.3 part of zinc stearate with a molecular weight of 600,000, stir for 5 minutes; then 50 parts of fumed white carbon black, 3 1 part of hydroxy silicone oil, added in 5 times, fully stirred after each addition; then added 2.4 parts of silver-loaded nano-titanium dioxide, 1.6 parts of polyhexamethylene biguanide hydrochloride and 0.5 parts of KH-151 and KH-560. The paste, after kneading and molding, is heated to 150°C and kneaded for 1.5 hours, kept at the temperature for 40 minutes under vacuum and heated, cooled to below 80°C with cooling water and discharged, cooled to room temperature and filtered to obtain silicone rubber mix.

[0023] Add 1.5% bis-penta-curing agent evenly into the rubber mixture with an open mill, weigh it, place it in a mold for vulcanization, and vulcanize at 175°C for 5 minutes.

Embodiment 3

[0025] Add 100 parts of vinyl polysiloxane and 0.3 part of zinc stearate with 0.16% molecular weight of 650,000 in molar percentage in the kneader, and stir for 5 minutes; then 70 parts of fumed white carbon black, 5 1 part of hydroxyl silicone oil, added in 6 times, fully stirred after each addition; then 3 parts of silver-loaded nano-titanium dioxide, 2 parts of polyhexamethylene biguanide hydrochloride and 0.5 parts of KH-151 and KH-560 were mixed. After the paste is kneaded and shaped, heat up to 150°C and knead for 1 hour, keep the temperature and heat for 15 minutes under vacuum, pass cooling water to cool down to below 80°C and discharge, cool to room temperature and filter to obtain silicone rubber mix.

[0026] Add 1.2% DCP vulcanizing agent evenly into the mixed rubber with an open mill, place it in a mold for vulcanization after weighing, and vulcanize at 160°C for 5 minutes.

[0027] The mechanical and physical properties and antibacterial effect data of the antiba...

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Abstract

The invention discloses antibacterial and mildew-proof high-temperature vulcanized silicone rubber and a preparation method thereof. The antibacterial and mildew-proof high-temperature vulcanized silicone rubber is prepared by mixing raw materials such as methyl vinyl polysiloxane, fumed silica, a silver-loaded antibacterial agent, a guanidine salt antibacterial agent, a silane coupling agent, a structured control agent and a release agent through a kneading machine. The antibacterial mould-proof high-temperature vulcanized silicone rubber has good physical and mechanical properties and processability, meets various characteristics of traditional high-temperature vulcanized silicone rubber, has good killing and inhibiting effects on fungi, bacteria, mould and enzyme bacteria, is long in lasting time, good in broad spectrum, safe and environment-friendly, does not generate drug resistance, and has a wider application range.

Description

technical field [0001] The invention relates to the manufacture of silicone rubber compound, in particular to an antibacterial, mildew-proof, high-temperature vulcanized silicone rubber and a preparation method thereof, belonging to the field of rubber material manufacture. Background technique [0002] Silicone rubber products are widely used, and with the continuous improvement of living standards, the market demand for functional silicone rubber products is increasing. Among them, industrial production, medical and health care, people's livelihood and health care all have higher requirements for the antibacterial properties of silicone rubber products , such as machine tools, surgical instruments, medical supplies, artificial organs, utensils, etc. According to the vulcanization method and vulcanization temperature, silicone rubber is divided into heat vulcanization type (high temperature vulcanization silicone rubber HTV) and room temperature vulcanization type (RTV). R...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08L79/00C08K13/06C08K9/12C08K3/08C08K3/22C08K5/098C08K7/26
CPCC08L83/04C08L2201/08C08L2205/025C08L2205/03C08K2201/011C08K2003/0806C08K2201/005C08K2003/2241C08L79/00C08K13/06C08K9/12C08K3/08C08K3/22C08K5/098C08K7/26
Inventor 施贤斌管涌顾金楼林斌
Owner JIANGSU TIANCHEN NEW MATERIALS
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