Organosilicone modified acrylate emulsion, preparation method thereof and water-based artificial stone prepared from organosilicone modified acrylate emulsion

A technology of acrylate and methyl acrylate, applied in the field of water-based artificial stone, can solve the problems of low silicon content, poor hardness, adhesion, weather resistance, etc., and achieve the effect of good performance

Active Publication Date: 2013-10-09
广东海顺新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] It is necessary to overcome the problems of low silicon content, poor hardness, adhesion and weather resistance of the existing silicon-acrylic emulsion; the compatibility of silicon-acrylic emulsion in the artificial stone formula, the water absorption rate and wear resistance of the finished artificial stone

Method used

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  • Organosilicone modified acrylate emulsion, preparation method thereof and water-based artificial stone prepared from organosilicone modified acrylate emulsion
  • Organosilicone modified acrylate emulsion, preparation method thereof and water-based artificial stone prepared from organosilicone modified acrylate emulsion
  • Organosilicone modified acrylate emulsion, preparation method thereof and water-based artificial stone prepared from organosilicone modified acrylate emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Example 1 Preparation of silicone-acrylic emulsion

[0068] 1) Preparation of silicone intermediate emulsion:

[0069] 4.0 parts by weight of dodecylbenzenesulfonic acid and 150 parts by weight of water were added to the reaction kettle and stirred, the water bath was heated to 80 ° C, 37.0 parts by weight of octamethylcyclotetrasiloxane D4 was added, and 6.0 parts by weight of Y-methyl were added. Acryloyloxypropyltrimethoxysilane KH570, 0.4 parts by weight of hexamethyldisiloxane MM, incubated for 7 hours, cooled to room temperature, and neutralized to pH=7.

[0070] 2) Preparation of silicone-acrylic copolymer core emulsion:

[0071] 80% siloxane intermediate emulsion, 30 parts by weight of water, 0.2 part by weight of sodium lauryl sulfate, 0.3 part by weight of nonylphenol polyoxyethylene ether, first-step mixed monomer (30 parts by weight of styrene, 180 parts by weight of methyl methacrylate, 85 parts by weight of methyl acrylate, 5 parts by weight of acrylic ...

Embodiment 2

[0075] Example 2 Preparation of silicone-acrylic emulsion

[0076] 1) Preparation of silicone intermediate emulsion:

[0077] 3 parts by weight of dodecylbenzene sulfonic acid and 120 parts by weight of water were added to the reaction kettle and stirred, the water bath was heated to 80° C., 30 parts by weight of octamethylcyclotetrasiloxane D was added, and 4 parts by weight of Y-methyl were added. Acryloyloxypropyltrimethoxysilane KH570, 0.1 part by weight of hexamethyldisiloxane MM, incubated for 7 hours, cooled to room temperature, and neutralized to pH=7.

[0078] 2) Preparation of silicone-acrylic copolymer core emulsion:

[0079] Mix 80% siloxane intermediate emulsion, 10 parts by weight of water, first-step mixed monomer (30 parts by weight of styrene, 170 parts by weight of methyl methacrylate, 75 parts by weight of methyl acrylate, 5 parts by weight of acrylic acid) Homogeneous, as a pre-emulsion

[0080] 20% siloxane intermediate emulsion, 0.2 parts by weight o...

Embodiment 3

[0083] Example 3 Preparation of silicone-acrylic emulsion

[0084] 1) Preparation of silicone intermediate emulsion:

[0085] 4.5 parts by weight of dodecylbenzene sulfonic acid and 180 parts by weight of water were added in the reaction kettle and stirred, the water bath was heated to 80° C., 40 parts by weight of octamethylcyclotetrasiloxane D4 were added, and 10 parts by weight of Y-methyl were added. Acryloyloxypropyltrimethoxysilane KH570, 1.0 parts by weight of hexamethyldisiloxane MM, incubated for 8 hours, cooled to room temperature, and neutralized to pH=7.

[0086]2) Preparation of silicone-acrylic copolymer core emulsion:

[0087] 80% siloxane intermediate emulsion, 50 parts by weight of water, 1 part by weight of sodium lauryl sulfate, 1 part by weight of nonylphenol polyoxyethylene ether, first-step mixed monomer (60 parts by weight of styrene, 230 parts by weight of methyl methacrylate, 130 parts by weight of methyl acrylate, 8 parts by weight of acrylic acid...

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Abstract

The invention provides an organosilicon modified acrylate emulsion with a weight-average molecular weight of 201205 and also provides a preparation method of the organosilicon modified acrylate emulsion and an artificial stone prepared from the organosilicon modified acrylate emulsion. According to the specific technical scheme, the preparation method comprises the following steps of: (1) preparing a siloxane intermediate emulsion; (2) preparing a silicon-acrylic copolymer core emulsion; and (3) preparing a silicon-acrylic copolymer shell emulsion. The molecular structure of the organosilicon modified acrylate emulsion has a special core-shell structure design, wherein an innermost core of a particle is made of an organosilicon component, an intermediate layer of the particle is made of a polyacrylate component and the shell of the particle is made of a multi-crosslinked organosilicon and polyacrylate component. The organosilicon modified acrylate emulsion not only has high organosilicon content, but also has high hardness and adhesive force. Compared with a common product, the organosilicon modified acrylate emulsion has higher emulsion hardness and resistance to soiling and water. The artificial stone prepared from the organosilicon modified acrylate emulsion has the advantages of good compatibility, high abrasion resistance, low water absorption, good heat resistance, high fire resistance and low shrinkage rate in an artificial stone formula.

Description

technical field [0001] The invention belongs to the field of chemical macromolecules and new materials, and in particular relates to a silicone-modified acrylate emulsion used for manufacturing artificial stones, a preparation method thereof and a water-based artificial stone prepared therefrom. Background technique [0002] The production of artificial stone currently mainly uses polyester resin or acrylic resin (polymethyl methacrylate) as the binder. Due to the use of solvents in the manufacturing process of polyester resin, the artificial stone made will release harmful gases. Moreover, acrylic resin needs to be cured at high temperature, which consumes a lot of energy. And the price of acrylic resin is very expensive. Acrylic resin itself is flammable, its heat distortion temperature is 96°C, and the maximum continuous use temperature is 65-95°C. Therefore, the manufactured artificial marble has insufficient heat resistance and flame retardancy. Due to the large cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/12C04B26/06
Inventor 付少辉易承志
Owner 广东海顺新材料科技有限公司
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