A kind of anti-back viscoelastic acrylic acid aqueous dispersion and preparation method thereof

A technology of acrylic and dispersion, applied in the direction of coating, etc., can solve the problems of anti-adhesion, poor hardness and flexibility, etc., and achieve the effect of good hardness, good water resistance and improved effect

Inactive Publication Date: 2017-03-08
湖南中汉高分子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of anti-back tack, hardness and poor flexibility existing in the existing acrylate emulsion, the purpose of the present invention is to propose a kind of anti-back back elastic acrylic acid aqueous dispersion and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The formulation of the anti-viscosity elastic acrylic water dispersion in this example: a high softening point nano-silica hybrid acrylic emulsion with a softening point of 50 to 70°C, a low softening point nano Silica hybrid acrylic emulsion and hydrogenated silicone oil with hydrogen content of 1-3%.

[0020] Its preparation method comprises the following steps:

[0021] a. Preparation of high softening point nano-silica hybrid acrylic acid emulsion: by mass fraction, all polymerizable monomers containing double bonds (30 parts of styrene, 9 parts of butyl acrylate, 10 parts of methyl methacrylate , 1 part of acrylic acid) into the monomer tank and mix evenly, and prepare a mixed monomer for use; secondly, adjust the pH of 0.15 parts of ammonium persulfate initiator, 0.15 parts of sodium lauryl sulfate emulsifier, and 0.15 parts of sodium bicarbonate Put the agent into the initiator tank, add 20 parts of deionized water and stir and dissolve to prepare the initiator-...

Embodiment 2

[0025] The formula of the anti-viscoelastic acrylic acid aqueous dispersion described in the present embodiment is the same as that of Example 1, and its preparation steps are except the following changes, and all the other are identical with Example 1:

[0026] a. Preparation of high softening point nano-silica hybrid acrylic acid emulsion: the amount of polymerizable monomer containing double bonds is 25 parts of styrene, 9 parts of butyl acrylate, 15 parts of methyl methacrylate, and 1 part of acrylic acid; A- 1 part of 174, stirring speed 125 r / min, heat preservation reaction 1.5h;

[0027] b. Preparation of low softening point nano-silica hybrid acrylic acid emulsion: the amount of double bond-containing polymerizable monomer is 10 parts of styrene, 34 parts of butyl acrylate, 5 parts of methyl methacrylate, and 1 part of acrylic acid;

[0028] c. Preparation of anti-rebound viscoelastic acrylic acid aqueous dispersion: place the nano-silica hybrid acrylic emulsion prepar...

Embodiment 3

[0030] The formula of the anti-viscoelastic acrylic acid aqueous dispersion described in the present embodiment is the same as that of Example 1, and its preparation steps are except the following changes, and all the other are identical with Example 1:

[0031]a. Preparation of high softening point nano-silica hybrid acrylic acid emulsion: the amount of polymerizable monomer containing double bonds is 25 parts of styrene, 10 parts of butyl acrylate, 14 parts of methyl methacrylate, and 1 part of acrylic acid; A- 1 part of 151, stirring speed 115 r / min, heat preservation reaction 1.2h;

[0032] b. Preparation of low softening point nano-silica hybrid acrylic acid emulsion: the amount of double bond-containing polymerizable monomer is 10 parts of styrene, 32 parts of butyl acrylate, 7 parts of methyl methacrylate, and 1 part of acrylic acid;

[0033] c. Preparation of anti-reverse viscoelastic acrylic acid aqueous dispersion: place the nano-silica hybrid acrylic emulsion prepar...

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Abstract

The invention discloses an anti-after-tack elastic acrylic aqueous dispersion and a preparation method thereof. The anti-after-tack elastic acrylic aqueous dispersion is prepared from a nano-silica hybridized acrylic emulsion with the high softening point and a nano-silica hybridized acrylic emulsion with the low softening point under the action of a siloxane coupling agent through compounding. The prepared anti-after-tack elastic acrylic aqueous dispersion has good flexibility, anti-after-tackiness and hardness.

Description

technical field [0001] The invention relates to an anti-viscosity elastic acrylic water dispersion and a preparation method thereof. Background technique [0002] Acrylate emulsion has excellent comprehensive properties, such as light color, gloss retention, color retention, weather resistance, corrosion resistance, etc., so it is widely used in coatings, adhesives and other fields. But it also has certain limitations, such as its poor water resistance and weather resistance, and its hardness and flexibility often do not meet the ideal requirements. In order to overcome the series of problems existing in acrylate emulsions, many researchers have launched a lot of attempts. At present, modification methods are mainly used to improve its performance, including nanoparticle modification, crosslinking modification, polyurethane modification, etc. etc., and have achieved certain results. For example, the publication number CN100584867 C discloses a preparation method of inorgan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D125/14C09D7/12C08F212/08C08F220/14C08F220/18C08F220/06C08F230/08C08F2/44C08K3/36
CPCC08F212/08C08F220/18C08F220/1804C08K2201/011C09D7/61C09D125/14C08L33/08C08K3/36C08F220/14C08F220/06
Inventor 吴锐周铭陈永杰
Owner 湖南中汉高分子材料科技有限公司
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