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Pure acrylic emulsion modified by inorganic nanoparticles and preparation method thereof

A technology of inorganic nanoparticles and pure acrylic emulsion, applied in the direction of coating, etc., can solve the problems of small particle size of inorganic nanoparticles, low dispersion compatibility, reduced mechanical properties of nanocomposites, etc.

Inactive Publication Date: 2011-02-09
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the particle size of unmodified inorganic nanoparticles is small, the specific surface area and specific surface energy are large, the surface atoms are seriously insufficiently coordinated, and it is easy to adsorb and agglomerate, showing low dispersion and compatibility in non-polar polymers. property, reducing the mechanical properties of the nanocomposite

Method used

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  • Pure acrylic emulsion modified by inorganic nanoparticles and preparation method thereof
  • Pure acrylic emulsion modified by inorganic nanoparticles and preparation method thereof
  • Pure acrylic emulsion modified by inorganic nanoparticles and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. Raw material formula:

[0016] Deionized water 45%;

[0017] Methyl methacrylate 24%;

[0018] Butyl Acrylate 25%;

[0019] Methacrylic acid 0.8%;

[0020] Compound emulsifier 2.6%;

[0021] Potassium persulfate 0.5%;

[0022] Silane coupling agent and oleic acid mixture 0.04%

[0023] Nano-TiO 2 0.66%;

[0024] Sodium bicarbonate 0.4%;

[0025] Ammonia 1.0%.

[0026] 2. Preparation method:

[0027] Nano TiO 2 Add methyl methacrylate, butyl acrylate, and methacrylic acid monomers into a beaker and stir vigorously for 2 hours, then sonicate for 2 hours. Stir the compound emulsifier, deionized water, and sodium bicarbonate in a three-necked flask, and heat it in a water bath. When the temperature rises to 50°C, add 0.1% potassium persulfate; when the temperature rises to 82°C, start adding TiO 2 The monomer mixture and add the remaining 0.4% potassium persulfate at the same time, ensure that the dropwise addition ends in about 2.5 hours and...

Embodiment 2

[0031] 1. Raw material formula:

[0032] Deionized water 58%;

[0033] Methyl methacrylate 20%;

[0034] Butyl Acrylate 16%;

[0035] Methacrylic acid 1.2%;

[0036] Compound emulsifier 2.9%;

[0037] Potassium persulfate 0.4%;

[0038] Silane coupling agent and oleic acid mixture 0.17%;

[0039] Nano-TiO 2 0.23%;

[0040] Sodium bicarbonate 0.6%;

[0041] Ammonia 0.5%.

[0042] 2. Preparation method:

[0043] The preparation method is the same as in Example 1.

[0044] Three, the inorganic nano-TiO obtained in the present embodiment 2 Performance comparison table of modified pure acrylic emulsion and pure acrylic emulsion:

[0045]

Embodiment 3

[0047] 1. Raw material formula:

[0048] Deionized water 45%;

[0049] Methyl methacrylate 30%;

[0050] Butyl Acrylate 18%;

[0051] Methacrylic acid 1.2%;

[0052] Compound emulsifier 3.4%;

[0053] Potassium persulfate 0.6%;

[0054] Silane coupling agent and oleic acid mixture 0.15%;

[0055] Nano-TiO 2 0.55%;

[0056] Sodium bicarbonate 0.5%;

[0057] Ammonia 0.7%.

[0058]2. Preparation method:

[0059] The preparation method is the same as in Example 1.

[0060] Three, the inorganic nano-TiO obtained in the present embodiment 2 Performance comparison table of modified pure acrylic emulsion and pure acrylic emulsion:

[0061]

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Abstract

The invention discloses a pure acrylic emulsion modified by inorganic nanoparticles and a preparation method thereof. The pure acrylic emulsion modified by the inorganic nanoparticles comprises the following compositions in percentage by mass: 45 to 58 percent of deionized water, 20 to 30 percent of methyl methacrylate, 15 to 25 percent of butyl acrylate, 0.8 to 1.2 percent of methacrylic acid, 2.6 to 3.4 percent of complex emulsifying agent, 0.4 to 0.6 percent of sodium bicarbonate, 0.4 to 0.6 percent of potassium peroxydisulfate, 0.23 to 0.66 percent of nano TiO2, 0.5 to 1.0 percent of ammonia water, and 0.04 to 0.17 percent of mixture of silane coupling agent and oleic acid; and the method for preparing the pure acrylic emulsion modified by the inorganic nanoparticles comprises the following steps: modifying the nano TiO2; and then carrying out mixing, stirring and dispersing processes and the like on monomers and the modified nano TiO2 so as to obtain the pure acrylic emulsion. The pure acrylic emulsion modified by the inorganic nanoparticles has the characteristics of aging resistance, wash fastness, water resistance and alkali resistance, and has the advantages of simple preparation process, low price and no environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of architectural coatings, and relates to an inorganic nano particle modified pure acrylic emulsion and a preparation method thereof. Background technique [0002] The paint film of pure acrylic emulsion has the characteristics of good transparency, adhesion, weather resistance, and self-drying at room temperature, so it occupies an important position in the paint industry, especially in decorative paints. However, due to the low hardness of its coating film, "hot stickiness and cold brittleness", it affects the application of pure acrylic emulsion. In recent years, due to the excellent physical and chemical properties of nanoparticles, they have been widely used in research. Inorganic nanocomposites have attracted extensive attention due to the nano-size effect, surface effect and strong interaction between nanoparticles and the matrix interface. Adding inorganic nanoparticles into the pure acrylic emulsi...

Claims

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Application Information

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IPC IPC(8): C08F220/14C09D133/12C08F2/44C09D7/12C08K9/06C08L33/12C08F2/24C08K9/04C08L33/08C08F220/18C08K3/22C09D133/08
Inventor 郭文录张莉
Owner JIANGSU UNIV OF SCI & TECH
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