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Preparation method of ATO/SiO2/waterborne polyacrylate composite microsphere

A polyacrylate and acrylate technology, which is applied in the field of preparation of ATO/SiO2/water-based polyacrylate composite microspheres, can solve the problems of long production process, unfavorable industrialization of transparent thermal insulation coatings, complicated and complicated processes, etc. , to achieve the effect of short process, huge energy saving significance and simple process

Active Publication Date: 2017-02-22
ZHONGKAI UNIV OF AGRI & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the production of coatings, the production process is long and the process is cumbersome and complicated, which is not conducive to the industrialization of transparent thermal insulation coatings.

Method used

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  • Preparation method of ATO/SiO2/waterborne polyacrylate composite microsphere
  • Preparation method of ATO/SiO2/waterborne polyacrylate composite microsphere
  • Preparation method of ATO/SiO2/waterborne polyacrylate composite microsphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Nano ATO powder is dispersed in ethanol aqueous solution, ethanol: water volume ratio is 1:1, adjusts the pH of solution to 8-10 with the ammonia solution of mass concentration 5-10%, controls the ATO mass concentration in the solution to be 5%, and then under the action of a high-speed disperser at a shear rate of 5000 rpm, disperse for 10 minutes to obtain an ATO dispersion.

[0035] (2) The ATO dispersion prepared in step (1) is used to modify the surface of ATO with a silane coupling agent. The amount of silane coupling agent is 5% of the mass of ATO, and the ATO dispersion and silane coupling agent are mixed and refluxed at 60°C for 240 minutes to prepare ATO / SiO with unsaturated double bonds 2 Composite suspension, wherein the silane coupling agent is: 3-aminopropyltriethoxysilane, N-2-aminoethyl-3-aminopropylmethyldimethoxysilane, vinyltrimethoxysilane .

[0036] (3) ATO / SiO prepared in step (2) 2 Composite suspension, distill ethanol in the solution at 70...

Embodiment 2

[0041] (1) Nano ATO powder is dispersed in ethanol aqueous solution, ethanol: water volume ratio is 9:1, adjusts the pH of solution to 8-10 with the ammonia solution of mass concentration 5-10%, controls the ATO mass concentration in the solution to be 15%, and then disperse for 20 minutes at a shear rate of 8000 rpm under the action of a high-speed disperser to obtain an ATO dispersion.

[0042] (2) The ATO dispersion prepared in step (1) is used to modify the surface of ATO with a silane coupling agent. The amount of silane coupling agent is 10% of the mass of ATO, ATO dispersion and silane coupling agent are mixed and refluxed at 90°C for 60 minutes to prepare ATO / SiO with unsaturated double bonds 2 Composite suspension, wherein the silane coupling agent is: vinyl tris (2-methoxyethoxy) silane, vinyl triethoxy silane (VTES).

[0043] (3) ATO / SiO prepared in step (2) 2 Composite suspension, distill ethanol in the solution at 80°C, add acrylate polymer monomer, add polymeri...

Embodiment 3

[0048] (1) Nano ATO powder is dispersed in ethanol aqueous solution, ethanol: water volume ratio is 5: 1, adjusts the pH of solution to 8-10 with the ammonia solution of mass concentration 5-10%, controls the ATO mass concentration in the solution to be 10%, and then under the action of a high-speed disperser at a shear rate of 6000 rpm, disperse for 5 minutes to obtain an ATO dispersion.

[0049] (2) The ATO dispersion prepared in step (1) is used to modify the surface of ATO with a silane coupling agent. The amount of silane coupling agent is 8% of the mass of ATO, and the ATO dispersion and silane coupling agent are mixed and refluxed at 90°C for 140 minutes to prepare ATO / SiO with unsaturated double bonds 2 Complex suspension, wherein the silane coupling agent is: N-2-aminoethyl-3-aminopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, γ-methacryloyloxypropyl Trimethoxysilane (MPS).

[0050] (3) ATO / SiO prepared in step (2) 2 Composite suspension, distill ethanol ...

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Abstract

The invention discloses a preparation method of an ATO / SiO2 / waterborne polyacrylate composite microsphere. The preparation method comprises the following steps: dispersing ATO, carrying out surface modification on ATO by virtue of a silane coupling agent so as to obtain ATO / SiO2 composite suspension liquid, removing ethanol from the ATO / SiO2 composite suspension liquid, and adding acrylate polymeric monomers, a polymerizable emulsifying agent, an auxiliary emulsifying agent and dispersing agent for emulsifying, so as to form ATO / SiO2 composite emulsified liquid; and finally enabling the emulsified liquid to react with an initiator, so as to prepare the ATO / SiO2 / waterborne polyacrylate composite microsphere. The ATO / SiO2 / waterborne polyacrylate composite microsphere is taken as a transparent thermal-insulation functional filler and has wide application prospects and huge energy-saving significances in transparency and thermal insulation of glass doors and windows, and the problems that nano-ATO of a transparent thermal-insulation composite emulsion prepared by virtue of simple blending is low in surface activity, difficult to modify, poor in dispersion stability and in phase separation with an organic phase can be fundamentally solved. Furthermore, the process is simple, and the flow is short, so that the preparation method is applicable to industrial production.

Description

technical field [0001] The invention belongs to the field of nanocomposite new materials, in particular to an ATO / SiO 2 The preparation method of water-based polyacrylate composite microspheres. Background technique [0002] Glass doors and windows are the main channel for the outdoor heat source to enter the room, so blocking the heat source of doors and windows has important energy-saving significance. Nano-antimony doped tin oxide (ATO) has the characteristics of blocking infrared rays and selectively transmitting visible light. It has broad application prospects and great energy-saving significance in the transparent heat insulation performance of glass doors and windows. However, due to the density of nano-ATO (about 4.0-7.6g / cm 3 ), poor emulsion dispersion stability, phase separation with the organic phase, and low surface activity of nano-ATO, which is difficult to graft and modify. The dispersibility of nano-ATO in water-based coatings is very important. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F220/14C08F220/18C08F220/28C08J3/12C09D133/00C09D151/10C09D7/12
CPCC09D7/65C09D133/00C08F292/00C08J3/12C08J2351/10C08L2205/18C08L2205/03C08L51/10C08L83/04C08F220/281C08F220/1804
Inventor 龚圣廖海艳周新华
Owner ZHONGKAI UNIV OF AGRI & ENG
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