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Preparation method for acrylic acid microemulsion with self-crosslinking core-shell structure

A core-shell structure, micro-emulsion technology, applied in coatings and other directions, can solve problems such as reducing water resistance and restricting applications

Active Publication Date: 2011-09-28
东莞大宝化工制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the conventional synthetic microemulsion process will use a large amount of emulsifiers (greater than 10% of the total material amount), which will inevitably reduce water resistance, thus also limiting the industrial application

Method used

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  • Preparation method for acrylic acid microemulsion with self-crosslinking core-shell structure
  • Preparation method for acrylic acid microemulsion with self-crosslinking core-shell structure
  • Preparation method for acrylic acid microemulsion with self-crosslinking core-shell structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Select each component composition and content in this implementation as shown in Table 1:

[0049] Table 1 Embodiment 1 each component composition and content table

[0050]

[0051] A preparation method of self-crosslinking core-shell structure acrylic acid microemulsion, comprising the following steps in order:

[0052] Step 1, pre-emulsification of seed microemulsion monomer

[0053] Add 1.00g of anionic emulsifier sodium dodecylsulfonate and 0.50g of OP-10, 0.60g of pH value buffer sodium bicarbonate and 32.45g of deionized water into the emulsifier, and mix for 10 minutes under stirring at 1000 rpm; Take vinyl monomer, that is, 2.40g methyl methacrylate, 1.50g styrene, and 0.40g butyl acrylate, mix them evenly, and drop them into the emulsifier at a constant speed under the condition of 7500 rpm high-speed emulsification, and the dropping time is 30 minutes Continue high-speed emulsification for 30 minutes after dropping to obtain the pre-emulsion of the seed ...

Embodiment 2

[0063] Select each component composition and content in this implementation as shown in Table 2:

[0064] Each component composition and content table of table 2 embodiment 2

[0065]

[0066]

[0067] A preparation method of self-crosslinking core-shell structure acrylic acid microemulsion, comprising the following steps in order:

[0068] Step 1, the pre-emulsification of seed microemulsion monomer 1.20g anionic emulsifier sodium dodecylsulfonate and 0.40g fatty alcohol polyoxyethylene ether (AEO-7), 0.40gpH value buffer sodium bicarbonate and 27.11g Add deionized water into the emulsifier, and mix for 5 minutes at 1200 rev / min stirring condition; get vinyl monomer, i.e. 1.38g methyl methacrylate, 1.50g styrene, 0.19g butyl acrylate and mix evenly. Under the condition of 10000 rpm high-speed emulsification, it was dripped into the emulsifier at a constant speed, and the dripping time was 20 minutes; after the dripping, the high-speed emulsification was continued for 2...

Embodiment 3

[0078] Select each component composition and content in this implementation as shown in Table 3:

[0079] Table 3 Embodiment 3 each component composition and content table

[0080]

[0081]

[0082] A preparation method of self-crosslinking core-shell structure acrylic acid microemulsion, comprising the following steps in order:

[0083] Step 1, pre-emulsification of seed microemulsion monomer

[0084] Add 0.80g of anionic emulsifier lauryl ammonium sulfate and 0.80g of nonionic emulsifier alkylphenol polyoxyethylene ether (TX-100), 0.60g of pH buffer sodium bicarbonate and 30.59g of deionized water into the emulsifier, Mix for 15 minutes under the stirring condition of 800 rpm; take the vinyl monomer, that is, 7.50 g of methyl methacrylate and 0.50 g of butyl acrylate, mix them evenly, and drop them into the emulsifier at a constant speed under the condition of high-speed emulsification at 6000 rpm In, drop time 20 minutes; Continue high-speed emulsification 40 minute...

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Abstract

The invention provides a preparation method for an acrylic acid microemulsion with a self-crosslinking core-shell structure, which sequentially comprises the following steps of: emulsifying a seed microemulsion monomer in advance, preparing seed microemulsion and core-shell part microemulsion, emulsifying a core part microemulsion monomer in advance, and preparing the acrylic acid microemulsion with the self-crosslinking core-shell structure. In the preparation method for the acrylic acid microemulsion with the self-crosslinking core-shell structure, common self-crosslinking monomers are adopted for replacing expensive organo-siloxane monomers and fluoride-containing vinyl monomers, a polymerization technology is used for improving the performance of the emulsion, and therefore, the prepared acrylic acid microemulsion has low cost and can be widely used; the acrylic acid microemulsion with the self-crosslinking core-shell structure, prepared by the invention, has a soft-shell hard-core structure and a self-crosslinking characteristic; the average grain diameter of the microemulsion is 60-100nm; and the acrylic acid microemulsion with the self-crosslinking core-shell structure has good nanometer effects and good grinding performance when being used in aqueous woodware primers, and has advantages of good permeability and wettability to base materials, strong adhesive force, compactness in coating, good transparency, higher gloss and good smoothness.

Description

technical field [0001] The invention relates to a method for preparing an acrylic microemulsion, in particular to a method for preparing an acrylic microemulsion with a self-crosslinking core-shell structure. Background technique [0002] Water-based coatings are one of the important directions in the development of coatings. For the water-based wood coatings, on the one hand, it is necessary to increase the performance of water-based wood coatings and narrow the gap with oil-based wood coatings; on the other hand, it is necessary to reduce the cost of water-based wood coatings. Only in this way can water-based wood coatings be easily adopted by the majority Consumers accept. [0003] At present, acrylic emulsions are still widely used in the field of waterborne wood coatings, especially waterborne wood primers, due to their lower price and faster drying speed compared with other waterborne coating resins. However, ordinary acrylic emulsions are difficult to meet the requi...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F212/08C08F220/18C08F220/06C08F220/28C08F220/58C08F2/30C08F2/26C09D133/12C09D125/14
Inventor 陈贺生杨凯
Owner 东莞大宝化工制品有限公司
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