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Easy-to-disperse acrylate-coated zinc stearate composite material and preparation thereof

A technology of composite materials and zinc stearate, which is applied in the field of modified zinc stearate materials and its preparation, can solve problems such as reducing interfacial compatibility, and achieve the effects of low cost, increased application range, and excellent stability

Inactive Publication Date: 2020-06-05
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by this invention is to provide a kind of easily dispersible acrylate coated zinc stearate composite material and its preparation, to overcome prior art zinc stearate sol easily affected by ambient temperature and long-term storage during use. Occur the defective of the influence of precipitation, this method endows zinc stearate certain water dispersibility, reduces the interfacial compatibility between zinc stearate and organic polymer solution, makes it can be uniformly dispersed in organic polymer solution, performance Excellent, non-toxic and environmentally friendly, and can be added to certain types of aqueous solutions in a targeted manner, with stable performance and good application potential and prospects

Method used

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  • Easy-to-disperse acrylate-coated zinc stearate composite material and preparation thereof
  • Easy-to-disperse acrylate-coated zinc stearate composite material and preparation thereof
  • Easy-to-disperse acrylate-coated zinc stearate composite material and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Mix 5 g of commercially available zinc stearate, 0.008 g of silane coupling agent KH-570 and 75 g of ethanol in a beaker, stir magnetically for 10 min, add 2.5 g of aqueous polyacrylate solution, stir magnetically for 10 min, and disperse ultrasonically for 20 min ;

[0036] (2) Add 5 g of sodium hydroxide solution with a mass fraction of 25% into the mixed solution, and stir magnetically at 25° C. for 15 min.

[0037] (3) The mixed solution was filtered, and the white precipitate was collected, and fully washed with deionized water until neutral.

[0038] (4) The collected product was dispersed in 15 g of deionized water, ultrasonically dispersed for 30 min; pre-frozen at -80° C., dried by a lyophilizer, and collected.

[0039] figure 1 The flow chart of the product process.

Embodiment 2

[0041] (1) Mix 5 g of commercially available zinc stearate, 0.008 g of silane coupling agent KH-570 and 75 g of ethanol in a beaker, stir magnetically for 10 min, add 5.0 g of aqueous polyacrylate solution, stir magnetically for 10 min, and disperse ultrasonically for 20 min ;

[0042] (2) Add 5 g of sodium hydroxide solution with a mass fraction of 25% into the mixed solution, and stir magnetically at 25° C. for 15 min.

[0043] (3) The mixed solution was filtered, and the white precipitate was collected, and fully washed with deionized water until neutral.

[0044](4) The collected product was dispersed in 15 g of deionized water, ultrasonically dispersed for 30 min; pre-frozen at -80° C., dried by a lyophilizer, and collected.

[0045] Such as figure 2 In , the contact angle of the product decreases, indicating that it has a certain degree of hydrophobicity; image 3 In the infrared spectrum, except for the characteristic peak of zinc stearate, at 1728cm -1 The stretch...

Embodiment 3

[0047] (1) Mix 5 g of commercially available zinc stearate, 0.008 g of silane coupling agent KH-570 and 75 g of ethanol in a beaker, stir magnetically for 10 min, add 7.5 g of aqueous polyacrylate solution, stir magnetically for 10 min, and disperse ultrasonically for 20 min ;

[0048] (2) Add 5 g of sodium hydroxide solution with a mass fraction of 25% into the mixed solution, and stir magnetically at 25° C. for 15 min.

[0049] (3) The mixed solution was filtered, and the white precipitate was collected, and fully washed with deionized water until neutral.

[0050] (4) The collected product was dispersed in 15 g of deionized water, ultrasonically dispersed for 30 min; pre-frozen at -80° C., dried by a lyophilizer, and collected.

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Abstract

The invention relates to an easy-to-disperse acrylate-coated zinc stearate composite material and a preparation method thereof. The easy-to-disperse acrylate-coated zinc stearate composite material comprises the following raw material components in parts by weight: 100 parts of zinc stearate; 0.05 to 0.25 part of a silane coupling agent; 50 to 350 parts of a water-based polyacrylate solution; and50-200 parts of a sodium hydroxide solution. The preparation method comprises the following steps: dispersing zinc stearate and silane in a solvent in a coupling manner, adding a polyacrylate solution, and dispersing; dropwise adding a sodium hydroxide solution at a constant temperature and a constant speed, performing suction filtration, washing, performing ultrasonic dispersion, and drying by afreeze dryer. The method has the characteristics of simple operation, environmental protection, low cost and mass production, and the obtained product has good stability and strong applicability, canbe easily dispersed in an aqueous organic polymer solution, and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of modified zinc stearate materials and preparation thereof, in particular to an easily dispersible acrylate-coated zinc stearate composite material and preparation thereof. Background technique [0002] Metal soap has the dual characteristics of metal salt and fatty acid, and is widely used as a plastic stabilizer, lubricant, halogen absorber, textile waterproofing agent, paint flatting agent, etc. In addition to the common properties of the above-mentioned general metal stearates, zinc stearate also has some unique properties: zinc stearate is a salt of bridge structure, with low melting point, small cohesive energy, and strong dipole effect. Weak, easy to dissolve in paraffin oil; Zinc stearate has a chelating structure between carboxylate and zinc ions, which has better lubricating effect than stearate with ionic structure, but at the same time has better compatibility with organic matrix Difference. With the ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K5/098C08K5/5425
CPCC08K5/098C08K5/5425C08K9/10
Inventor 周兴平周欣艳
Owner DONGHUA UNIV
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