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Mouldproof antibacterial polyorganosiloxane sealing material and preparation method thereof

A polyorganosiloxane and sealing material technology, applied in the field of organosiloxane materials, can solve the problems of inability to exert antibacterial properties, easy denaturation, loss of biological activity, etc.

Inactive Publication Date: 2016-07-06
TANGSHAN SANYOU SILICON IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, microalgae active enzymes and biologically active polypeptides are prone to denaturation, lose their biological activity, and cannot exert antibacterial properties

Method used

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  • Mouldproof antibacterial polyorganosiloxane sealing material and preparation method thereof
  • Mouldproof antibacterial polyorganosiloxane sealing material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033]Under the protection of nitrogen, 23.63g γ-glycidyl etheroxypropyl trimethoxysilane, 10.67g dodecyl dimethyl tertiary amine, 14.88g octadecyl dimethyl tertiary amine, 20g isopropanol and 4.6 Put 1 g of formic acid in the reactor, react at 75°C for 4h under stirring condition, firstly prepare dodecyl quaternized ammonium silane, then add deionized water dropwise and react at 30°C for 6h, and then de-lower at -0.1MPa After 30 minutes, dodecyl quaternary ammonium oligosiloxane (QS-1) was prepared.

[0034] 50 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 80Pa.S and 20Pa.S, 10 parts of QS-1, 15 parts of white carbon black, 30 parts of light calcium carbonate, and 5 parts of quartz powder (white Carbon black, light calcium carbonate and quartz powder as inorganic fillers), 10 parts of polydimethylsiloxane with a viscosity of 100mPa.S, 15 parts of 2Pa.S polydimethylsiloxane, 5Pa.S polydimethylsiloxane 20 parts of base siloxane (100mPa.S polydimethylsil...

Embodiment 2

[0036] Under nitrogen protection, add 19.87g of γ-chloropropyltrimethoxysilane and 40g of ethylene glycol butyl ether into the reactor, add 21.34g of dodecyldimethyl tertiary amine dropwise under stirring, and react at 110°C for 10h , First make dodecyl quaternary ammonium silane. Then the system was lowered to room temperature, deionized water was added dropwise to react for 4 hours, and then de-lowered for 30 minutes under the condition of -0.1MPa to prepare dodecyl quaternary ammonium oligosiloxane (QS-2).

[0037] 50 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 80Pa.S and 20Pa.S, 5 parts of QS-2, 20 parts of white carbon black, 45 parts of light calcium carbonate, and 5 parts of quartz powder. Add 15 parts each of polydimethylsiloxane of 100mPa.S and 5Pa.S to the kneader, start stirring, heat-treat the material at 130°C and -0.1MPa for 2 hours, and then place the above rubber in three Roll mill grinds 30min, then places in the planetary stirring t...

Embodiment 3

[0039] Under the protection of nitrogen, 19.87g of γ-chloropropyltrimethoxysilane and 40g of ethylene glycol butyl ether were added to the reactor, and 29.76g of octadecyldimethyl tertiary amine was added dropwise under stirring, and the reaction was carried out at 110°C for 8h , firstly obtain octadecyl quaternary ammonium silane. Then the system was lowered to room temperature, and deionized water was added dropwise to react for 4 hours, and then lowered for 30 minutes under the condition of -0.1MPa to obtain octadecyl quaternary ammonium oligosiloxane (QS-3).

[0040] Under the protection of nitrogen, 23.63g γ-glycidyl etheroxypropyl trimethoxysilane, 21.34g dodecyldimethyl tertiary amine, 20g isopropanol and 6.0g acetic acid were placed in the reactor, under stirring conditions React at 75°C for 4 hours to prepare dodecyl quaternary ammonium silane, then add deionized water dropwise and react at 30°C for 6 hours, then de-lower at -0.1MPa for 30 minutes to obtain dodecyl qu...

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Abstract

The invention relates to an organosiloxane material in the field of fine chemical industry, in particular to a mouldproof antibacterial polyorganosiloxane sealing material and a preparation method thereof.The sealing material is prepared from, by mass, 95-110 parts of hydroxyl-terminated polydimethylsiloxane, 3-20 parts of an antibacterial component, 15-50 parts of an inorganic filler, 2-10 parts of a silane crosslinking agent and 20-75 parts of an organic additive.The preparation method comprises the steps that the hydroxyl-terminated polydimethylsiloxane, the antibacterial component, the inorganic filler and the organic additive are added into a kneading machine to be mixed to be uniform according to the formula and subjected to heat treatment under the vacuum condition; the mixture is ground with a three-roll grinder and then placed into a planet stirring kettle, then the silane crosslinking agent, the organic additive and a catalyst are added into the planet stirring kettle, mixing under vacuumizing is performed, and then the mixture is transferred into a material pressing machine to be packaged.The polyorganosiloxane sealing material has the excellent and lasting mouldproof and antibacterial performances.

Description

technical field [0001] The invention relates to an organosiloxane material in the field of fine chemical industry, in particular to a mildewproof and antibacterial polyorganosiloxane sealing material and a preparation method thereof. Background technique [0002] Functional organopolysiloxanes have a wide range of applications, but mildew and yellowing often occur during use, which not only affects the appearance but also affects people's health. Especially for the sealants used in kitchens and bathrooms, due to the humid environment, microorganisms multiply rapidly. With the accumulation of time, the sealing materials around cabinets, sinks, and bathtubs will turn black and be difficult to clean. And this black mold is mostly Aspergillus niger, whose spores float in the air and reproduce elsewhere in the home. Therefore, the selection of sealing materials with antibacterial and antifungal effects is very important. [0003] At present, scholars have used methods such as a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/06C08L83/08C08L83/04C08K13/02C08K3/36C08K3/26C08K5/5419C08K5/544C08K5/5445C08K5/541
CPCC08L83/06C08K2201/014C08L2205/025C08L2205/035C08L83/08C08L83/04C08K13/02C08K3/36C08K2003/265C08K5/5419C08K5/544C08K5/541
Inventor 孙长江赵洁李献起李建渊张作功王志杰曹鹤刘思佳张鹏硕赵磊
Owner TANGSHAN SANYOU SILICON IND