Method for manufacturing nanometer hydrated alumina fluid dispersion for numerical code color spraying image paper

A hydrated alumina, a manufacturing method technology, applied in the direction of paper, etc., can solve the problems of dust pollution in production and use, easy agglomeration, uneven dispersion of nanoparticles, etc., and achieve the effect of no dust pollution, high brightness, and strong three-dimensional effect

Inactive Publication Date: 2008-10-08
许炯
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem that when manufacturing nano-materials in digital color-jet imaging paper coatings in the prior art, the materials need to be dried and made into powders, which are easy to agglomerate and then dispersed with water, resulting in uneven dispersion of nanoparticles and dust in the process of production and use. pollution problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In a 2000 ml flask (reaction vessel), add 230 grams of 15% isopropanol aqueous solution, heat up to 50°C, add 100 grams of crushed aluminum isopropoxide, stir, heat up to 82°C, generate reflux, and react for 3 hours . After the reaction is over, the aluminum hydroxide in the hydrolyzate is transformed into hydrated alumina by heating; the hydrolyzate is heated and distilled to collect the evaporated isopropanol. relatively low concentration. Heat the isopropanol solution at 110° C. for about 24 hours, concentrate it to a solid content of 20%, adjust the pH value to 8.5, add 0.1 g of 1% sodium sulfate as a secondary particle size distribution regulator, and stir it. When the secondary particle size distribution of the test particles is 100-200nm, 5 grams of 1% acetic acid is added dropwise for stabilization.

Embodiment 2

[0020] In a 2000 ml flask, add 450 grams of 33% isopropanol aqueous solution, at room temperature, add 100 grams of crushed aluminum isopropoxide, stir, and raise the temperature to produce reflux, about 82 ° C, and react for 3 hours. After the reaction is finished, heat-up distillation is carried out to collect the evaporated isopropanol, which has a high concentration in the early stage and relatively low concentration in the later stage. Heat at 130° C. for about 18 hours, adjust the pH to 7.5, concentrate to a solid content of 22%, add a secondary particle size distribution regulator: 1 gram of 1% polyethylene glycol 400, 0.1 gram of 1% sodium sulfate, and stir. When the secondary particle size distribution of the test particles is 250-600nm, gradually add 3 grams of 1% acetic acid dropwise for stabilization.

Embodiment 3

[0022] In a 2000ml flask, add 600g of 50% isopropanol aqueous solution, heat up to 70°C, add 100g of crushed aluminum isopropoxide, stir, and heat up to reflux, about 82°C, and react for 3 hours. After the reaction is finished, heat-up distillation is carried out to collect the evaporated isopropanol, which has a high concentration in the early stage and relatively low concentration in the later stage. Heat at 180° C. for about 1 hour, concentrate to a solid content of 30%, add a secondary particle size distribution regulator: 2 grams of 10% polyethylene glycol 6000, and stir. When the secondary particle size distribution of the test particles is 100-150nm, then gradually add 10 grams of 0.1% hydrochloric acid dropwise for stabilization.

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Abstract

The invention discloses a manufacture method of nanometer hydrated alumina dispersion liquid for digital color inkjet printing image paper, which adopts the following process: 1) aluminum Isopropoxide is hydrolyzed by isopropyl alcohol and water; 2) the hydrolyzed liquid is distilled to obtain the isopropyl alcohol; 3) the isopropyl alcohol is condensed, adjusted in acidity and alkalinity, and added with secondary particle size distribution regulator for treatment; 4) finally, the hydrated alumina dispersion liquid is added with an acid solution stabilizer by the means of drop, so as to obtain the stable nanometer hydrated alumina dispersion liquid for digital color inkjet printing image paper, thereby solving the difficulty of drying need, being easy for accumulation, uneven nanometer particle dispersion, and dust pollution during production and use when manufacturing nanometer hydrated alumina material in the prior digital color inkjet printing image paper. The nanometer hydrated alumina dispersion liquid has the advantages of high efficiency, energy saving, and environmental protection, so that the surface layer of paper has light transmission, anti-crack, good ink absorption, high brightness, bright color and strong solid feeling. The nanometer hydrated alumina dispersion liquid is suitable for manufacturing digital color inkjet printing image paper as one-time coated cloth.

Description

technical field [0001] The invention relates to a method for manufacturing a nanometer hydrated alumina dispersion liquid for digital color spray image paper surface layer coating preparation. Background technique [0002] Existing digital color inkjet image paper, the coating that its surface layer is used all is the coating that adds the multiple additives such as tackiness agent to prepare after high-speed dispersion of filler solid silicon oxide, aluminum oxide powder in water. For literature, see the research progress of nano-alumina powder prepared by wet chemical method in "Acta Ceramics" 2004 (9). Also have CN200410065606.0 special coating for nano-level environment-friendly color digital printing paper, CN1544252A a kind of waterproof high-gloss inkjet printing medium, "Shanghai Papermaking" 2004 (4) improve matte color inkjet paper quality exploration and other document descriptions The method means that the above-mentioned solid filler is dispersed to make a disp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/28
Inventor 许炯邵国强
Owner 许炯
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