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Preparation method of activated organic attapulgite for coating

A technology of attapulgite and organic concave, applied in the direction of coating, to prevent the occurrence of precipitation, improve the grade of waterproof coating, and have the effect of strong dispersibility

Inactive Publication Date: 2014-04-02
MINGGUANG TIANJIAO TECH DEV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the attapulgite on the existing market has poor dispersibility in coatings and cannot fully realize its suspension thickening performance

Method used

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Experimental program
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Effect test

Embodiment Construction

[0014] A preparation method of activated organic attapulgite for coating, comprising the following steps:

[0015] (1) Take the attapulgite raw ore and put it into a hydrochloric acid solution with a concentration of 1mol / L, heat it in a water bath to 80°C, stir at a speed of 600r / min for 1.5h, filter, wash the filter residue with deionized water until neutral, and dry it , crushed, and passed through a 300-mesh sieve;

[0016] (2) Calcinate the sieved attapulgite at 440°C for 2 hours, add 2% calcium lignosulfonate, 5% jade powder, 1.5% triethanolamine and 0.8% γ-( Methacryloyloxy)propyl trimethoxysilane, 3000rpm high-speed grinding for 10min, then add deionized water to beat to make a 60% slurry, then add Span 80 and 2% six Sodium metaphosphate, 0.8% sodium dodecylbenzenesulfonate and 1.5% octadecyltrimethylammonium chloride, heated in a water bath to 65°C, stirred for 3h, centrifuged at 1500rpm for 20min, and the precipitate was washed with deionized water 3 times,...

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Abstract

The invention discloses a preparation method of activated organic attapulgite for a coating. The method comprises the following steps: burning attapulgite raw ore at 420-450 DEG C for 2-3 hours after purifying by a hydrochloric acid; adding calcium lignosulphonate, jade powder and the like, adding water to pulp after grinding; adding span-80, sodium hexametaphosphate and the like; ultrasonically dispersing, stirring in a water bath, centrifugally separating, washing and baking; evenly mixing with nano-silica sol after burning at 860-920 DEG C for 1-2 hours; adding polyvinylpyrrolidone, hydroxyethyl cellulose, sodium polyacrylate, n-butyl acetate and the like; jordaning, filtering, baking and sieving, so as to obtain the activated organic attapulgite for the coating. The attapulgite prepared by the method is strong in dispersity, good in rheological property, small in precipitation coefficient and good in suspension property, and simultaneously has strong adsorbability and mildew resistance. Poisonous gases in various coatings can be effectively adsorbed, the coating can be prevented from mildewing, and improvement of the quality of a waterproof coating is facilitated.

Description

[0001] technical field [0002] The invention relates to a preparation method of activated organic attapulgite for coatings, belonging to the field of coating additives. [0003] Background technique [0004] Attapulgite is a natural colloidal mineral, which belongs to the crystal of magnesium aluminum silicate hydrate. It has unique colloidal properties. The completely hydrated attapulgite can thicken the liquid without swelling. In recent years, due to the deep processing of this natural mineral, endowing it with suspension thickening properties, it has become an environmentally friendly anti-sedimentation agent, and its price is relatively low, which has attracted widespread attention in the coating industry at home and abroad. However, the attapulgite on the existing market has poor dispersibility in coatings and cannot fully realize its suspension thickening performance. [0005] Contents of the invention [0006] The object of the present invention is to provide a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12
Inventor 杨立新
Owner MINGGUANG TIANJIAO TECH DEV
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