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A kind of preparation method of multi-reactive organic silicon water repellent agent grafted with porous micro-nano silicon spheres

A multi-reactive, water-repellent technology, applied in the direction of liquid-repellent fibers, anti-coloring pollution/anti-fouling fibers, fiber treatment, etc., can solve the problem of not considering the water-repellent effect, lack of chemical activity, and weak binding ability and other problems, to achieve excellent water repellency effect, short process flow and good applicability

Active Publication Date: 2022-01-11
WUHAN TEXTILE UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution requires the use of special hyperbranched polyester, which is expensive and difficult to obtain; in addition, its water repellency principle only relies on the chemical structure with low surface tension, and does not consider improving water repellency by constructing a rough physical surface. effect; finally, this type of water repellent lacks chemical activity and has a weaker binding ability with textiles

Method used

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  • A kind of preparation method of multi-reactive organic silicon water repellent agent grafted with porous micro-nano silicon spheres
  • A kind of preparation method of multi-reactive organic silicon water repellent agent grafted with porous micro-nano silicon spheres
  • A kind of preparation method of multi-reactive organic silicon water repellent agent grafted with porous micro-nano silicon spheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Example 1 Preparation method of multi-reactive organic silicon water-repellent agent dispersion liquid grafted with porous micro-nano silicon spheres of the present invention

[0061] The concrete steps of this preparation method:

[0062] (1) The step of preparing porous micro-nano-silicon spheres. In this step, the raw materials of porous micro-nano-silicon spheres are mixed and reacted to make porous micro-nano-silicon spheres; specifically:

[0063] (1.1) At 25-30°C, put 15% of the total amount of alcohol, soft water, and ammonia water into the reactor, stir evenly, and put in alkyl silicate; keep the reaction temperature constant, stir and react for 240 minutes;

[0064] (1.2) Add the remaining alcohol into the reaction system of (1.1), keep the temperature constant, stir and react for 120min;

[0065] (1.3) Add crosslinking agent and 50% sodium hydroxide aqueous solution, control the reaction temperature to 80-85°C, keep stirring and react for 130min;

[0066] (...

Embodiment 2

[0079] Example 2 Preparation method of multi-reactive silicone water-repellent agent dispersion grafted with porous micro-nano silicon spheres of the present invention

[0080] The concrete steps of this preparation method:

[0081] (1) The step of preparing porous micro-nano-silicon spheres. In this step, the raw materials of porous micro-nano-silicon spheres are mixed and reacted to make porous micro-nano-silicon spheres; specifically:

[0082] (1.1) At 30-33°C, put 17% of the total amount of alcohol, soft water, and ammonia into the reactor, stir evenly, and put in alkyl silicate; keep the reaction temperature constant, stir and react for 200 minutes;

[0083] (1.2) Add the remaining alcohol into the reaction system of (1.1), keep the temperature constant, stir and react for 100min;

[0084] (1.3) Add cross-linking agent and 50% sodium hydroxide aqueous solution, control the reaction temperature to 78-83°C, keep stirring and react for 150min;

[0085] (1.4) Filter the rea...

Embodiment 3

[0097] Example 3 Preparation method of multi-reactive organic silicon water-repellent agent dispersion liquid grafted with porous micro-nano silicon spheres of the present invention

[0098] The concrete steps of this preparation method:

[0099] (1) The step of preparing porous micro-nano-silicon spheres. In this step, the raw materials of porous micro-nano-silicon spheres are mixed and reacted to make porous micro-nano-silicon spheres; specifically:

[0100] (1.1) At 25-30°C, put 20% of the total amount of alcohol, soft water, and ammonia water into the reactor, stir evenly, and put in alkyl silicate; keep the reaction temperature constant, stir and react for 270 minutes;

[0101] (1.2) Add the remaining alcohol into the reaction system of (1.1), keep the temperature constant, stir and react for 140min;

[0102] (1.3) Add crosslinking agent and 50% sodium hydroxide aqueous solution, control the reaction temperature to 80-85°C, keep stirring and react for 140min;

[0103] (...

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Abstract

The invention relates to a preparation method of a multi-reactive organic silicon water-repellent agent grafted with porous micro-nano silicon spheres. The method comprises the following steps: (1) preparation of porous micro-nano silicon spheres; (2) preparation of a multi-reactive silicone water-repellent agent intermediate: (3) multi-reactive silicone water-repellent agent grafted with porous micro-nano silicon spheres Preparation: The porous micro-nano silicon spheres and the reactive silicone water-repellent agent intermediate are catalytically coupled with a reactive coupling agent and water to prepare a multi-reactive silicone water-repellent agent grafted with porous micro-nano silicon spheres. The polyreactive organic silicon water-repellent agent grafted with porous micro-nano silicon spheres provided by the present invention is grafted with micro-nano-level porous silicon microspheres on the polysiloxane water-repellent structure, which is conducive to the establishment of an organic silicon microsphere on the smooth textile fiber surface. The low-tension surface layer with a certain roughness endows the textile fibers with excellent water repellency and good durability through the dual effects of physics and chemistry, and the application process is simple and the process flow is short.

Description

technical field [0001] The invention relates to a fluorine-free water-repellent and antifouling finishing agent for various textile products, in particular to a preparation method of a multi-reactive organic silicon water-repellent agent grafted with porous micro-nano silicon spheres. Background technique [0002] In the textile field, waterproof, oil-proof, and anti-fouling (three-proof) finishing agents are often used in the special functional finishing of various textile products. Water and oil repellent finishing agent. Although this type of water and oil repellent finishing agent has excellent three-proof effect, the organic fluorine monomer it contains is considered not environmentally friendly, so it is being gradually replaced by various fluorine-free water repellent agents. At present, the fluorine-free water-repellent agents that have been successfully applied in the textile field mainly include polyurethane based on long-chain alkyl water-repellent structure, pol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C08G77/388D06M15/37D06M11/79D06M15/643
CPCC08G83/001C08G77/388D06M15/37D06M11/79D06M15/6436D06M2200/12D06M2200/01
Inventor 权衡黄朝坤刘柳杨志秋谭小琴倪丽杰李时伟李青
Owner WUHAN TEXTILE UNIV