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

A silicon acrylate and cationic technology, which is applied in textiles and papermaking, improved hand feeling fibers, fiber treatment, etc., can solve the problems of unstable emulsion reaction, high viscosity of macromolecular silicone oil, difficult emulsification and dispersion, etc., to improve water repellency effect, excellent film-forming performance, low adhesion effect

Inactive Publication Date: 2016-06-08
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 by weight: 900 parts of acrylate mixed monomers, 100 parts of silicone monomers, 30 parts of emulsifier, and 3 parts of initiator. parts, 30 parts of crosslinking agent, 4000 parts of deionized water;

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

[0052] The organosilicon monomers are γ-methacryloyloxypropyl 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 trimethyl ammonium chloride (OATAC) and isotridecanol polyoxyethylene ether (DNS500), and the mass ratio of the two is 1.2:0.3;

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

[0055] The crosslinking ag...

Embodiment 2

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

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

[0069] The organosilicon monomers are γ-methacryloyloxypropyl 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 trimethyl ammonium chloride (OATAC) and isotridecanol polyoxyethylene ether (DNS500), and the mass ratio of the two is 1.0:0.4;

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

[0072] The crosslin...

Embodiment 3

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

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

[0086] The organosilicon monomers are γ-methacryloyloxypropyl 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 trimethyl ammonium chloride (OATAC) and isotridecanol polyoxyethylene ether (DNS500), and the mass ratio of the two is 0.8:0.4;

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

[0089] The crosslinki...

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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] The commonly used fabric water repellents in the textile industry mainly include fluorine-containing, silicon-containing and aliphatic hydrocarbon compounds, among which fluorine-containing water repellents can endow fabrics with excellent water repellency, oil repellency, self-cleaning and breathability. 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, breathable, resistant ...

Claims

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Application Information

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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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