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a ca 2+ /sio 2 Preparation method of ion exchange pigment

An ion exchange and pigment technology, applied in the field of pigments, can solve the problems of high content of heavy metal impurities, uneven distribution of product particles, low purity of ion exchange pigments, etc., to achieve uniform particle distribution, good UV resistance and ozone resistance of glue , easy to color effect

Active Publication Date: 2019-12-24
GUANGXI RES INST OF CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a Ca 2+ / SiO 2 The preparation method of ion exchange type pigment, solves the Ca produced by existing method 2+ / SiO 2 Practical production problems such as low purity of ion-exchange pigments, high content of heavy metal impurities, and uneven distribution of product particles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]Dissolve 5kg of calcium nitrate in 20kg of butanol, then add 0.0005kg of citric acid; dissolve 5kg of sodium silicate in 20kg of ethanol, and then add 0.0005kg of ethylenediaminetetraacetic acid; mix calcium nitrate solution and sodium silicate solution Mix evenly, drop ammonia water into the mixed reaction system until the pH value of the mixed reaction system is 5.0 to obtain a translucent sol, age the translucent sol and separate it to obtain a gel, and dry the gel at a constant temperature of 50°C , to obtain xerogel, then grind the xerogel, sieve, select xerogel particles with a particle size of 0.1 μm as the precursor, maintain the precursor at 200°C for 8 hours until the precursor crystallizes, and obtain.

Embodiment 2

[0035] Dissolve 10kg of calcium hydroxide in a mixed organic solvent composed of 10kg propanol and 10kg ethanol methanol, then add 20kg of aluminum silicate dissolved in a mixed organic solvent composed of 30kg ethanol and 70kg propylene glycol, and then add 0.0012kg of tartaric acid; Mix the calcium hydroxide mixed solution and the aluminum silicate mixed solution evenly, drop ammonia water into the mixed reaction system until the pH value of the mixed reaction system is 5.5, and obtain a translucent sol, which is obtained after aging and separation of the translucent sol Gel, dry the gel at a constant temperature at 60°C to obtain a xerogel, then grind the xerogel, sieve, select xerogel particles with a particle size of 0.8 μm as a precursor, and maintain the precursor at 250°C After 7.5 hours until the precursor crystallizes, it is ready.

Embodiment 3

[0037] Dissolve 15kg calcium hydroxide and 5kg calcium carbonate in a mixed organic solvent composed of 35kgg glycerol and 25kg benzyl alcohol, then add 0.1kg calcium tannate and 0.1kg amino acid calcium; dissolve 45kg aluminum silicate in 66kg ethanol , 34kg propylene glycol in the mixed organic solvent composition, then add 0.02kg hydroxyethyl ethylenediamine triacetic acid; The two kinds of mixed solutions are mixed uniformly, and in the mixed reaction system, drip ammonia water to the pH value of the mixed reaction system to be 6.0, obtain Translucent sol, the translucent sol is aged and separated to obtain a gel, the gel is dried at a constant temperature at 70°C to obtain a xerogel, and then the xerogel is ground and sieved to select a particle size of 2 μm Xerogel particles are used as a precursor, and the precursor is maintained at 280° C. for 7 hours until the precursor is crystallized.

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PUM

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Abstract

The invention provides a preparation method of a Ca<2+> / SiO2 ion exchange type pigment. The preparation method comprises the steps of dissolving a calcium source into an alcohol solvent I, dissolvinga silicon source into an alcohol solvent II, preparing gel by virtue of a sol-gel method, drying, grinding and sieving the gel, selecting dry gel particles with the particle sizes of 0.1-30 microns asa precursor, and maintaining the precursor at 200-1000 DEG C for 0.5-8 hours until the precursor is crystallized, so as to obtain the pigment. The preparation method is simple in process and operation and low in production cost, the prepared Ca<2+> / SiO2 ion exchange type pigment has good solubleness and is applied to the fields of coatings, papermaking, oil ink, plastic, rubber and the like, andthe performance of corresponding materials can be improved; and furthermore, the pigment is low in content of impurity heavy metal, so that the potential safety hazards of a user can be reduced, the environmental friendliness can be improved, and the pigment has good application prospects.

Description

technical field [0001] The invention belongs to the field of pigments, in particular to a Ca 2+ / SiO 2 Preparation method of ion exchange pigment. Background technique [0002] In recent years, phosphate series antirust pigments have been well applied and promoted in the paint manufacturing industry because of their excellent performance and wide applicability, among which zinc phosphate and aluminum tripolyphosphate are the most outstanding. However, zinc is highly toxic to aquatic organisms, especially marine organisms. Irrigation of farmland with zinc-containing sewage can cause uneven emergence of crops and chlorosis of leaves; aluminum can cause human memory loss, anemia, bone softening and other health problems; Eutrophication has become a social consensus. Outdoor steel structures, ships, vehicles, etc. are protected by a large number of coatings containing zinc, aluminum, and phosphorus. As these steel coatings are damaged and weathered, the zinc, aluminum, and ph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/08C09D11/03D21H17/69D21H17/68D21H17/66D21H17/67D21H21/14C08K9/12C08K3/36C08K3/013
CPCC08K3/00C08K3/36C08K9/12C09D5/084C09D11/03D21H17/66D21H17/675D21H17/68D21H17/69D21H21/143
Inventor 廖欢吴良王富丽王俊虹
Owner GUANGXI RES INST OF CHEM IND CO LTD
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