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Nano-zinc oxide/acrylic ester grafting composite emulsion and preparation thereof

A technology of nano-zinc oxide and composite emulsion, which is applied in the field of preparing nano-zinc oxide/acrylate grafted composite emulsion, which can solve the problems of poor stability, low coating efficiency and grafting rate of nano-composite emulsion, and high cost of nano-composite emulsion , achieve the effect of overcoming high cost, improving coating efficiency and grafting rate, and wide application of products

Inactive Publication Date: 2011-04-20
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a nano zinc oxide / acrylate composite emulsion with excellent performance and its preparation method, and solve the problem of high cost, poor stability, coating efficiency and grafting rate of the nano composite emulsion prepared by using a coupling agent low problem

Method used

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  • Nano-zinc oxide/acrylic ester grafting composite emulsion and preparation thereof
  • Nano-zinc oxide/acrylic ester grafting composite emulsion and preparation thereof
  • Nano-zinc oxide/acrylic ester grafting composite emulsion and preparation thereof

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Effect test

Embodiment 1

[0019] Deionized water 250 Mixed monomer 100nm Zinc oxide particles 5

[0020] Dimethyl sulfoxide 45 Azobisisovalerate 5 n-Hexadecane 2

[0021] Emulsifier OP-10 2 Emulsifier MS-1 5.

[0022] Among them: mixed monomers are: methyl methacrylate 60, butyl acrylate 38, methacrylic acid 2.

[0023] Specific steps:

[0024] 1) Ultrasonic disperse 5 parts of dry nano zinc oxide particles in dimethyl sulfoxide for 10 minutes, then add 5 parts of azobisisovaleric acid, stir and react for 3-8 hours, after high-speed centrifugation, wash with ethanol 3-5 times, vacuum drying to obtain nano-ZnO particles anchored on the surface of the azo initiator;

[0025] 2) Dissolve emulsifiers OP-10 and MS-1 in 250 parts of water to form an aqueous phase solution;

[0026] 3) Add 2 parts of n-octadecane to 100 parts of acrylate mixed monomer, then add the nano-ZnO particles anchoring the azo initiator obtained in step 1), and ultrasonically vibrate for 20 minutes to form an oil phase pre-dispers...

Embodiment 2

[0029] Sodium dodecylbenzenesulfonate replaces MS-1, octadecane replaces hexadecane, and the mixed monomers are: methyl methacrylate 50, ethyl acrylate 48, acrylic acid 2.

[0030] Specific steps:

[0031] 1) Ultrasonic disperse 5 parts of dry nano zinc oxide particles in dimethyl sulfoxide for 10 minutes, then add 5 parts of azobisisovaleric acid, stir and react for 3-8 hours, after high-speed centrifugation, wash with ethanol 3-5 times, vacuum drying to obtain nano-ZnO particles anchored on the surface of the azo initiator;

[0032] 2) Dissolving emulsifier OP-10 and sodium dodecylbenzenesulfonate into 250 parts of water to form an aqueous solution;

[0033] 3) Add 2 parts of n-octadecane to 100 parts of mixed monomers, then add the nano-ZnO particles anchoring the azo initiator obtained in step 1), and ultrasonically vibrate for 20 minutes to form an oil phase pre-dispersion;

[0034] 4) Add the oil phase pre-dispersion liquid obtained in step 3) into the water phase solu...

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Abstract

The invention relates to the manufacturing field of nano composite emulsion materials, in particular to a nano zinc oxide / polyacrylate composite emulsion and a manufacturing method thereof. Firstly an initiator azobisisovaleric acid is anchored on the surface of nano zinc oxide particles, two portions of hexadecane are added to 100 portions of mixed monomers, and 5 portions of nano ZnO particles anchoring the azo initiator are added and ultrasonically oscillated for 20 minutes to form an oil phase pre-dispersion solution. The pre-dispersion solution is added to an emulsifier aqueous solution and dispersed by a high-shear dispersion homogenizer at high speed for 30 minutes to form a mini-emulsion. The mini-emulsion is transferred to a reactor, heated to the temperature of 75 DEG C, with polyreaction initiated for 3 hours, and then heated to the temperature of 85 DEG C, polymerized for 2 hours, cooled to room temperature and discharged. The invention solves the problems of high cost and poor stability of the nano composite emulsion prepared by coupling agents, and low encapsulation efficiency and graft ratio of nano polymer composite particles. The composite emulsion has the advantages of simple preparation process, low cost, even particle size, good performance, high encapsulation efficiency and graft ratio of the nano-particles, forms nano monodisperse state in the polymer, and is suitable for the fields of coating materials, leather finishing materials, adhesives and functional plastics.

Description

technical field [0001] The invention relates to a nanometer composite emulsion, in particular to a method for preparing nanometer zinc oxide / acrylic acid ester graft type composite emulsion by means of miniemulsion polymerization technology. Background technique [0002] As urban buildings tend to be high-rise and large-scale, high-performance architectural coatings with high weather resistance, high color retention, high stain resistance, non-solvent type, low pollution and environmental protection have attracted great attention. Architectural coatings need to withstand more severe weather and have higher requirements for coatings. They must have excellent weather resistance, heat resistance, chalking resistance, UV resistance, stain resistance, antibacterial and mildew resistance, and self-cleaning functions. There is an urgent need for high-performance, high-functional emulsion polymers. At present, the commonly used architectural coatings are polymer emulsions and their...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F2/24C08F4/04
Inventor 唐二军
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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