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Antibacterial organic silicone elastomer emulsion, preparation method and application thereof

A technology of silicone and body milk, which is applied in coatings, adhesive additives, paints containing biocide, etc., can solve the problems of inability to apply in areas with high mechanical performance requirements, complicated preparation methods, poor mechanical strength, etc., and achieve excellent Mechanical strength, easy operation, and the effect of good mechanical strength

Active Publication Date: 2015-08-05
GUANGZHOU TINCI MATERIALS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silicone elastomers are currently being used in daily cosmetics rapidly due to their good swelling properties and smearing experience, but they are difficult to obtain in other fields such as coatings and fabric treatment due to their complicated preparation methods, high price and difficulty in emulsification. application
[0005] Grafting quaternary ammonium salt groups on the main chain of polysiloxane can endow the material with antibacterial properties, but its main problem is poor mechanical strength. At present, it is mainly used in fabric finishing, and it cannot be applied in fields that require high mechanical properties.

Method used

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  • Antibacterial organic silicone elastomer emulsion, preparation method and application thereof
  • Antibacterial organic silicone elastomer emulsion, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) 15g octadecyltrimethylammonium chloride, 20g polyether modified silicone oil (Dow Corning ) and 10g potassium hydroxide are dissolved in 625g water, add 10g 3-aminopropylmethyldimethoxysilane and 320g octamethylcyclotetrasiloxane (D4) and stir and mix to obtain a mixed material, and the mixed material is uniformly mixed at 30MPa Homogenize for 3 times under mass pressure, then pour into the reactor, heat to 70°C for 6 hours to obtain aminopolysiloxane emulsion;

[0031] (2) The amino polysiloxane emulsion temperature of step (1) is reduced to 50 ℃, add 10g nano-silica sol (colloid mean particle size is 40nm) and 20g glycidyl octadecyl dimethyl ammonium chloride, React for 5 hours under the condition of mechanical stirring to obtain the antibacterial silicone elastomer emulsion.

[0032] The glycidyl octadecyl dimethyl ammonium chloride of this embodiment refers to the literature (Wang Zunhai, Jiang Cuiyu, Song Linhua. Synthesis of epoxy propyl dimethyl dodecyl amm...

Embodiment 2

[0034] (1) Dissolve 50g of cetyltrimethylammonium chloride, 50g of isomeric tridecyl alcohol polyoxyethylene ether and 10g of potassium hydroxide in 440g of water, add 22.5g of 3-aminopropylmethyldimethoxy Silane and 427.5g of octamethylcyclotetrasiloxane (D4) were stirred and mixed uniformly to obtain a mixed material. The mixed material was homogenized for 4 times under a homogeneous pressure of 20MPa, then poured into the reactor, and heated to 60°C for 12 hours to obtain amino Silicone emulsion;

[0035] (2) Reduce the temperature of the aminopolysiloxane emulsion in step (1) to 45°C, add 30g of nano-silica sol (colloid average particle size is 20nm) and 40g of glycidyltrimethylammonium chloride, and react under microwave conditions After 1 hour, the antibacterial silicone elastomer emulsion was obtained.

Embodiment 3

[0037] (1) Dissolve 10g of cetyltrimethylammonium chloride, 10g of isomeric tridecyl alcohol polyoxyethylene ether and 20g of sodium hydroxide in 560g of water, add 32g of 3-aminopropylmethyldimethoxysilane Stir and mix with 368g of octamethylcyclotetrasiloxane (D4) to obtain a mixed material. The mixed material is homogenized for 5 times under a homogeneous pressure of 10MPa, then poured into the reactor, and heated to 80°C for 4 hours to obtain amino polysilicon oxane emulsion;

[0038] (2) Lower the temperature of the aminopolysiloxane emulsion in step (1) to 60°C, add 20g of Ag-loaded silica and 5g of epoxypropyltrimethylammonium chloride, and react for 1h under microwave conditions to obtain the antibacterial Silicone elastomer emulsion.

[0039] The Ag-loaded silica in this example was prepared by reference to the literature (Zhang Bin, Li Xiping, Bai Jinfeng. Preparation and antibacterial effect of antibacterial silica [J]. Chemical New Materials, 2004, 32(3): 23-25) ...

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Abstract

The invention belongs to the technical field of organic silicone elastomers and discloses an antibacterial organic silicone elastomer emulsion, a preparation method and an application thereof. The preparation method includes following steps: (1) dissolving a surfactant and an alkaline catalyst in water, adding an aminosilane monomer and a methylsiloxane monomer, and stirring the mixture uniformly to obtain a mixed material, homogenizing the mixed material and carrying out a reaction at 60-80 DEG C for 4-12 h to obtain an amino polysiloxane emulsion; (2) regulating the temperature of the amino polysiloxane emulsion to 45-65 DEG C, adding a reinforcing agent and an epoxy quaternary ammonium salt compound, and carrying out a reaction under mechanical stirring or a microwave condition for 1-6 h to obtain the antibacterial organic silicone elastomer emulsion. The antibacterial organic silicone elastomer emulsion is excellent in antibacterial and mechanical performances and can be used in the fields of antibacterial coatings, waterproof coatings, fabric coatings, adhesives, sealing agents and the like.

Description

technical field [0001] The invention belongs to the technical field of silicone elastomers, and in particular relates to an antibacterial silicone elastomer emulsion and a preparation method and application thereof. Background technique [0002] At present, the research and application of organosilicon materials is one of the hot spots in the scientific research of functional polymer materials. Silicone plays an extremely important role in polymer material science. Silicone monomers and their polymers have extremely low surface energy, and their Si-O bonds have high bond energy and easy bond rotation. These characteristics endow it with excellent water resistance, high and low temperature resistance, weather resistance, and air permeability. [0003] However, the application of silicone polymers also has certain disadvantages, such as poor compatibility with water base and low mechanical strength. Aiming at the disadvantage of poor hydrophilicity, the existing technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/08C08K3/36C08K5/1515C08G77/26C08J3/03C09D183/08C09D5/14C09J183/08C09J11/06C09J11/04D06M15/643
Inventor 雷秋芬吴伟
Owner GUANGZHOU TINCI MATERIALS TECH
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