Fluorosilicone-modified polyacrylate emulsion as well as preparing method and application thereof

A technology of polyacrylate emulsion and fluorine-silicon modification, which is applied in the field of fluorine-silicon modified polyacrylate core-shell emulsion and its preparation, to achieve the effects of reducing industrial waste, convenient transportation, and reducing packaging costs

Active Publication Date: 2017-03-22
广东吉美帮新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in China, research on redispersible latex powder is still in its infancy

Method used

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  • Fluorosilicone-modified polyacrylate emulsion as well as preparing method and application thereof
  • Fluorosilicone-modified polyacrylate emulsion as well as preparing method and application thereof
  • Fluorosilicone-modified polyacrylate emulsion as well as preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1) Synthesis of fluorine-silicon modified core-shell emulsion

[0048] The first step, the preparation of seed emulsion: weigh 15g methyl methacrylate, 51g butyl acrylate, 0.5g methacrylic acid, mix well, as nuclear monomer;

[0049] Take by weighing 0.3g potassium persulfate initiator and dissolve with 30g deionized water to obtain initiator solution;

[0050] 100g deionized water, 0.3gNaHCO 3 , 1.7g sodium dodecylbenzenesulfonate and 30% of the above-mentioned initiator solution quality drop into in the 1000ml four-neck flask that stirrer, thermometer, condensation tube, dropping funnel are housed, stir, treat that water-bath heats up to 80 ℃, then slowly add 10% nucleomonomer dropwise, and at the same time, keep the system temperature at 80°C for reaction, and keep warm for 15 minutes after the dropwise addition. Then start to slowly add the remaining nucleomonomers dropwise, and keep the reaction at 80°C for 30 minutes after the remaining nucleomonomers are droppe...

Embodiment 2

[0059] 1) Synthesis of fluorine-silicon modified core-shell emulsion

[0060] The first step is the preparation of seed emulsion. Weigh the above-mentioned 14g ethyl methacrylate, 49g ethyl acrylate, and 0.5g acrylic acid as core monomers, and mix them uniformly;

[0061] Take by weighing 0.5g potassium persulfate initiator and dissolve with 30g deionized water to obtain initiator solution;

[0062] 80g deionized water, 0.5gNaHCO 3 , 1.5g sodium lauryl sulfate and 10% of the quality of the above-mentioned initiator emulsion are dropped into a 1000ml four-necked flask equipped with a stirrer, a thermometer, a condenser tube, and a dropping funnel, stirred, and when the water bath is heated to 80°C , and then slowly drop 15% of the nucleomonomer, while maintaining the system temperature at 80° C. for a period of time. After the dropwise addition, keep warm for 15 minutes. Then start to slowly add the remaining nucleomonomers dropwise, and after the nucleomonomers are complet...

Embodiment 3

[0069] 1) Synthesis of fluorine-silicon modified core-shell emulsion

[0070] The first step is the preparation of seed emulsion. Weigh the above-mentioned 16g propyl methacrylate, 45g isooctyl acrylate, and 0.5g acrylic acid as core monomers, and mix them uniformly;

[0071] Take by weighing 0.3g potassium persulfate initiator and dissolve with 30g deionized water to obtain initiator solution;

[0072] 20% of 100g deionized water, 0.3gNaHCO3, 1.7g alkyl diphenyl oxide sodium sulfonate and above-mentioned initiator solution quality are dropped into the 1000ml four-neck flask that stirrer, thermometer, condenser tube, dropping funnel are equipped with During the process, stir, and when the water bath is heated to 80°C, slowly add 20% nucleomonomer dropwise, while maintaining the system temperature at 80°C for reaction, and keep warm for 15 minutes after the dropwise addition. Then start to slowly add the remaining nucleomonomers dropwise, and after the nucleomonomers have bee...

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Abstract

The invention discloses a fluorosilicone-modified polyacrylate emulsion as well as a preparing method and an application thereof. The preparing method comprises the following steps: first, mixing deionized water, NaHCO3, an emulsifying agent and an initiator solution, stirring, heating, dropwise adding part of core monomers and reacting; then, beginning slowly dropwise adding the rest of core monomers, and after dropwise adding all of the core monomers, reacting to prepare a seed emulsion; then, dropwise adding shell monomers and the rest of initiator solution into the seed emulsion, controlling reaction temperature at 78-82DEG C, filtering after reaction, discharging, and synthesizing a fluorosilicone-modified nanometer acrylic emulsion with a soft-core and hard-shell structure; and adding a protective colloid into the fluorosilicone-modified core-shell emulsion to prepare a spray-dried pre-emulsion and obtain redispersible rubber powder. Compared with common redispersible rubber powder, the redispersible rubber powder has an excellent water resisting property and can be widely applied to the building fields of outer wall paints, dry-mixed mortar and the like. When used for a building paint and mortar, the product can endow the building paint and the mortar with excellent water retention, weather fastness and constructability.

Description

technical field [0001] The present invention relates to a modified polyacrylate emulsion, in particular to a fluorine-silicon modified polyacrylate core-shell emulsion and its preparation method and application; the application is to prepare a redispersible polymer by using a fluorine-silicon modified polyacrylate emulsion latex powder Background technique [0002] With the development of our country's social economy, people's living standards are gradually improving, and people's requirements for living environment and quality of life are getting higher and higher. Residential buildings that meet environmental protection, energy saving, comfort and high quality have become the development trend in the future. [0003] Redispersible latex powder is an essential polymer additive in dry powder mortar, which is a widely used architectural coating in the construction field and can be applied to various construction mortar fields. Adding a certain amount of redispersible latex p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/06C08F220/14C08F220/18C08F220/06C08F220/28C08F220/22C08F230/08C08F220/24C08J3/12C08L51/00C08K3/36C08K3/34
CPCC08F265/06C08J3/122C08K3/34C08K3/36C08L51/003C08J2351/00C08L29/04C08F220/1803C08F220/1802C08F220/1804C08F220/1808
Inventor 张心亚胡佩
Owner 广东吉美帮新材料有限公司
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