Comb polyelectrolyte type dispersing agent with dispersed nano particles and preparation method of dispersing agent

A nanoparticle and polyelectrolyte technology, applied in the field of dispersant preparation, can solve the problems of poor stability, environmental pollution, high price, and achieve increased hydration capacity and thermal stability, good chemical and thermal stability, Increases the effect of repelling

Active Publication Date: 2014-12-24
国科广化(南雄)新材料研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dispersion effect of this kind of dispersant is better than that of inorganic dispersant, but the price is relatively high, the stability is not very good, and it will cause pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Weigh 20g of 3-(2-methacryloyloxyethyldimethylamino)propanesulfonate and 2g of pentenol polyoxyethylene ether (TPEG-2400, the molecular weight of pentenol polyoxyethylene ether is 2400 ), was added to the three-necked flask; 2.2g of sodium hypophosphite was weighed and dissolved in 10.00g of deionized water to obtain an aqueous solution of sodium hypophosphite; the above aqueous solution of sodium hypophosphite was added to the above-mentioned three-necked flask, and then 15g of Ionized water, stirred (rotating speed is 1000r / min) and mixed to obtain mixed solution Ⅰ;

[0044] (2) Dissolve 0.88g of ammonium persulfate in 30g of deionized water to obtain an aqueous solution of ammonium persulfate; add the aqueous solution of ammonium persulfate dropwise at 60°C (the drop rate is 5s / drop) into the mixed solution Ⅰ , initiate the reaction, and the reaction time is 6 hours to obtain the mixed solution II;

[0045](3) Add 1.10g of 10wt% sodium hypophosphite aqueous solu...

Embodiment 2

[0050] (1) Weigh 5g3-(2-methacryloyloxyethyldimethylamino)propanesulfonate and 15g allyl alcohol polyoxyethylene ether (MPEG-2400, the molecular weight of allyl alcohol polyoxyethylene ether is 2400), join in the there-necked flask; Take 0.22g potassium phosphite, be dissolved in 10.00g water, obtain potassium hypophosphite aqueous solution; The above-mentioned potassium hypophosphite aqueous solution is joined in the above-mentioned three-necked flask, then add 15g water, Stir (rotating speed is 300r / min) and mix well to obtain mixed liquid I;

[0051] (2) Dissolve 0.50 g of ammonium persulfate into 17.0 g of water to obtain an aqueous solution of ammonium persulfate; at 70° C., add the aqueous solution of ammonium persulfate dropwise (the drop rate is 7 s / drop) into the mixed solution Ⅰ , initiate the reaction, and react for 4 hours to obtain the mixed solution II;

[0052] (3) 10.0g of 10wt% sodium hypophosphite aqueous solution is added in the mixed solution II, and coole...

Embodiment 3

[0057] (1) Weigh 10g of 3-(2-methacryloyloxyethyldimethylamino)propanesulfonate and 15g of isopentenol polyoxyethylene ether (TPEG-2400) into a three-necked flask; weigh 0.8g of sodium hypophosphite was dissolved in 10.00g of water to obtain an aqueous solution of sodium hypophosphite; the above-mentioned aqueous solution of sodium hypophosphite was added in the above-mentioned three-necked flask, and then 25g of water was added, stirred and mixed (the speed of stirring was 500r / min ), to obtain the mixed solution I;

[0058] (2) Dissolve 0.125g of ammonium persulfate into 12.5g of water to obtain an aqueous solution of ammonium persulfate; at 90°C, add the aqueous solution of ammonium persulfate dropwise (at a rate of 10s / drop) to the mixture In Ⅰ, initiate the reaction, and react for 2 hours to obtain the mixed solution Ⅱ;

[0059] (3) Add 5.0 g of 10 wt % sodium hypophosphite aqueous solution into the mixed liquid II, and cool to room temperature under stirring (the stirri...

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Abstract

The invention belongs to the technical field of dispersing agent preparation, and discloses a comb polyelectrolyte type dispersing agent with dispersed nano particles and a preparation method of the dispersing agent. The dispersing agent comprises 3-(2-methacryloyloxyethyl trimethyl dimethylamino) propanesulfonic acid salt, enol polyoxyethylene ether, a chain transfer agent, an initiator, a chain terminator and deionized water. The prepared dispersing agent disclosed by the invention is comb polyamphoteric electrolyte; and after the nano particles adsorb the dispersing agent disclosed by the invention, steric hindrance effect among nano particles is relatively strong, and sedimentation is hardly caused. Therefore, the dispersing effect is good. Meanwhile, quaternary ammonium salt cation is introduced into a macromolecule main chain, so that the hydratability and the heat stability of the dispersing agent are enhanced.

Description

technical field [0001] The invention belongs to the technical field of dispersant preparation, and in particular relates to a comb-shaped polyelectrolyte dispersant for dispersing nanoparticles and a preparation method thereof. Background technique [0002] In recent years, nanomaterials have attracted extensive attention and research because of their special effects. Nano-zinc oxide refers to the inorganic powder material whose characteristic size is on the order of nanometers (1-100nm). Some applications have been obtained in the rubber industry and the textile industry. [0003] Nano ceramics are known as "universal materials" or "new materials for the 21st century". Nano-ceramics refer to ceramic materials whose phases in the microstructure have a nanoscale scale, that is to say, the grain size, grain boundary width, second phase distribution, defect size, etc. are all at the nanoscale level. Ceramic products added with nano-ZnO have certain antibacterial and self-cle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F220/38C04B35/634
Inventor 王斌谢义鹏郑周李雅杰黄月文杨璐霏
Owner 国科广化(南雄)新材料研究院有限公司
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