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Cationic silicon-containing acrylate fabric water repellent and preparation method thereof

A silicone acrylate and cationic technology, applied in textiles and papermaking, liquid-repellent fibers, fiber treatment, etc., can solve the problems of high viscosity of macromolecular silicone oil, unstable emulsion reaction, difficult emulsification and dispersion, etc., and achieve excellent Film-forming performance, water-repellent effect improvement, low-adhesive effect

Inactive Publication Date: 2018-10-02
INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the viscosity of macromolecular silicone oil is high, and it is difficult to emulsify and disperse by conventional emulsification methods, while small molecule cyclic or linear silane coupling agents are easy to hydrolyze and condense in water environments, resulting in unstable emulsion reactions
Therefore, the above organic silicon monomers are used as raw materials to prepare fabric water-repellent agents, and the actual content of organic silicon is not high, resulting in unsatisfactory water-repellent effects; another prior art uses difficult-to-hydrolyze gamma-methacryloxy Propyl tris (trimethylsiloxy) silane is used as a raw material, and the prepared emulsion is stable, has high silicon content, and has excellent water-repellent effect. , the high cost limits its commercial application

Method used

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  • Cationic silicon-containing acrylate fabric water repellent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In this example, a cationic silicon-containing acrylate fabric water repellent is prepared from the following raw materials in parts by weight: 900 parts of acrylate mixed monomers, 100 parts of silicone monomers, 30 parts of emulsifiers, and 3 parts of initiators. parts, 30 parts of cross-linking agent, 4000 parts of deionized water;

[0051] The acrylate mixed monomer is methyl methacrylate (MMA), butyl acrylate (BA) and acrylic acid (AA) with a mass ratio of 5.0:5.0:0.15;

[0052] The organosilicon monomer is γ-methacryloxypropyl tris(trimethylsiloxy)silane (TRIS) and polyvinyl silicone oil (Si(Tri), viscosity 3000±500cst, vinyl content 10.0mol %), the mass ratio is 8.5:1.5;

[0053] The emulsifier is composed of octadecyl polyether acrylate trimethylammonium chloride (OATAC) and isomeric tridecyl alcohol polyoxyethylene ether (DNS500), and the mass ratio of the two is 1.2:0.3;

[0054] The initiator is azobisisobutylamidine hydrochloride (AIBA);

[0055] The cros...

Embodiment 2

[0067] In this example, a cationic silicon-containing acrylate fabric water repellent is prepared from the following raw materials in parts by weight: 800 parts of acrylate mixed monomer, 200 parts of silicone monomer, 40 parts of emulsifier, 4 parts of initiator parts, 23 parts of cross-linking agent, 3000 parts of deionized water;

[0068] The acrylate mixed monomer is methyl methacrylate (MMA), butyl acrylate (BA) and acrylic acid (AA) with a mass ratio of 6.5:3.5:0.25;

[0069] The organosilicon monomer is γ-methacryloxypropyl tris(trimethylsiloxy)silane (TRIS) and polyvinyl silicone oil (Si(Tri), viscosity 3000±500cst, vinyl content 10.0mol %), the mass ratio is 7.5:2.5;

[0070] The emulsifier is composed of octadecyl polyether acrylate trimethylammonium chloride (OATAC) and isomeric tridecyl alcohol polyoxyethylene ether (DNS500), and the mass ratio of the two is 1.0:0.4;

[0071] Described initiator is azobisisobutylimidazoline hydrochloride (AIBI);

[0072] The cro...

Embodiment 3

[0084] In this example, a cationic silicon-containing acrylate fabric water repellent is prepared from the following raw materials in parts by weight: 720 parts of acrylate mixed monomers, 280 parts of silicone monomers, 48.88 parts of emulsifiers, and 4.5 parts of initiators. parts, 18 parts of cross-linking agent, 2800 parts of deionized water;

[0085] The acrylate mixed monomer is methyl methacrylate (MMA), butyl acrylate (BA) and acrylic acid (AA) with a mass ratio of 7.5:2.5:0.30;

[0086] The organosilicon monomer is γ-methacryloxypropyl tris(trimethylsiloxy)silane (TRIS) and polyvinyl silicone oil (Si(Tri), viscosity 85000±6000cst, vinyl content 6.0mol %), the mass ratio is 6.5:3.5;

[0087] The emulsifier is composed of octadecyl polyether acrylate trimethylammonium chloride (OATAC) and isomeric tridecyl alcohol polyoxyethylene ether (DNS500), and the mass ratio of the two is 0.8:0.4;

[0088] The initiator is azobisisobutylamidine hydrochloride (AIBA);

[0089] The ...

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Abstract

The invention relates to a cationic silicon-containing acrylate fabric water repellent and a preparation method thereof. The water repellent is prepared with a core-shell emulsion polymerization technology and is prepared from, by weight, 600-900 parts of acrylate mixed monomers, 100-400 parts of organosilicone monomers, 30-100 parts of an emulsifying agent, 3-10 parts of an initiating agent, 10-30 parts of a crosslinking agent and 1000-4000 parts of water, wherein the acrylate mixed monomers are composed of methyl methacrylate, butyl acrylate and acrylic acid, seed emulsion in the core-shell emulsion polymerization technology is prepared by polymerizing the acrylate mixed monomers, and the organosilicone monomers are composed of gamma-(trimethyloxysilyl)propyl methacrylate and polyvinylsilicone oil at the mass ratio of (5.0-8.5):(1.5-5.0). The water repellent is low in production cost and good in stability, and an emulsion film of the water repellent has an excellent water-repellent effect.

Description

technical field [0001] The invention relates to the technical field of water-repellent agents, in particular to a cationic silicon-containing acrylate fabric water-repellent agent and a preparation method thereof. Background technique [0002] Fabric water repellents commonly used in the textile industry mainly include fluorine-containing, silicon-containing and aliphatic hydrocarbon compounds, etc. Among them, fluorine-containing water repellents can endow fabrics with excellent water repellency, oil repellency, self-cleaning and air permeability, and are most used wide. However, fluorine-containing water repellents are not resistant to low temperature, have poor adhesion to fabrics, have certain bioaccumulation toxicity, and have serious ecological problems. Many countries and organizations have issued relevant regulations to limit their dosage. Silicon-containing water repellents have low surface energy similar to fluorine-containing water repellents, and are non-toxic, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/12C08F220/14C08F220/18C08F220/06C08F230/08C08F2/28C08F2/30D06M15/65D06M15/643
CPCC08F2/28C08F2/30C08F283/124D06M15/643D06M15/65D06M2200/12D06M2200/50C08F220/1804
Inventor 杨番王柱刘海峰张涛
Owner INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI
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