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Preparation method of TiO2/wollastonite compound

A technology of wollastonite and composites, which is applied in the field of preparation of TiO2/wollastonite composites, which can solve the problems of resource saving, large amount of TiO2 added, poor coating effect, etc., and achieve weather resistance Good, high whiteness, mild reaction conditions

Active Publication Date: 2019-11-22
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that titanium dioxide in the prior art cannot be uniformly and densely coated on the surface of wollastonite under the condition of using a dispersant, the coating effect is not good, so that the TiO2 / wollastonite composite is used as a substitute for TiO2, so that the amount of TiO2 added is too much As a result, the requirement of saving resources cannot be well met

Method used

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  • Preparation method of TiO2/wollastonite compound
  • Preparation method of TiO2/wollastonite compound
  • Preparation method of TiO2/wollastonite compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 60g wollastonite to 250mL distilled water, stir at 15°C for 30min, add polyacrylic acid emulsion, the amount of polyacrylic acid emulsion added is 1% of the mass of wollastonite, stir in a water bath at 15°C for 30min, add 9g rutile titanium dioxide, 0.01g dispersant PEG-1000, stirred in a water bath at 15°C for 1 hour to obtain a white slurry, vacuum filtered and dried in an oven at 80°C for 12 hours to obtain a TiO2 / wollastonite composite product; the whiteness of the obtained TiO2 / wollastonite composite product The value is 92.3.

Embodiment 2

[0023] Add 60g wollastonite to 250mL distilled water, stir at 15°C for 30min, add polyvinyl alcohol, the amount of polyvinyl alcohol added is 1% of the mass of wollastonite, stir in a water bath at 15°C for 30min, add 9g rutile titanium dioxide, 0.01g dispersant PEG-1000, stirred in a water bath at 15°C for 1 hour to obtain a white slurry, vacuum filtered and dried in an oven at 80°C for 12 hours to obtain a TiO2 / wollastonite composite product; the whiteness of the obtained TiO2 / wollastonite composite product The value is 92.9.

Embodiment 3

[0025] Add 60g wollastonite to 250mL distilled water, stir at 15°C for 30min, add polyacrylamide, the amount of polyacrylamide added is 1% of the mass of wollastonite, stir in a water bath at 15°C for 30min, add 9g rutile titanium dioxide, 0.01g dispersant PEG-1000, stirred in a water bath at 15°C for 1 hour to obtain a white slurry, vacuum filtered and dried in an oven at 80°C for 12 hours to obtain a TiO2 / wollastonite composite product; the whiteness of the obtained TiO2 / wollastonite composite product The value is 92.5.

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Abstract

The invention discloses a preparation method of a TiO2 / wollastonite compound, belonging to the technical field of inorganic synthesis. The preparation method comprises the following steps: adding a water-soluble polymer emulsion as a binder, adding a dispersing agent PEG, and preparing the uniformly coated TiO2 / wollastonite compound under the conditions of water bath heating and stirring at 15 DEGC, the TiO2 / wollastonite compound has a plate-shaped structure, and the surface layer is uniformly coated with a layer of rutile titanium dioxide. Compared with the prior art, tests show that the product prepared by the method has the characteristics of high whiteness, uniform TiO2 coating, good weather resistance and the like. The preparation method is simple in operation process and low in equipment requirement, and has very good industrial production value and application prospect.

Description

technical field [0001] The invention belongs to the technical field of inorganic synthesis, and in particular relates to a preparation method of a TiO2 / wollastonite compound. Background technique [0002] Wollastonite is a new type of industrial mineral, its main component is calcium metasilicate which belongs to chain structure. Wollastonite can be used as a paint flatting agent, improving the uniformity, durability, weather resistance and color persistence of paint coatings, and can improve the thermal stability of polymers. Wollastonite has high whiteness and opacity, which can meet the color requirements of white or light-colored polymer products, and can replace titanium dioxide. TiO2 has important applications in the fields of coatings, papermaking, plastics, ceramics, cosmetics and medicine, and is the white pigment with the best performance in the world. However, with the vigorous development of my country's coatings, plastics and other industries, the demand for ru...

Claims

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Application Information

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IPC IPC(8): C01G23/053C01B33/24
CPCC01G23/053C01B33/24C01P2004/80C01P2004/03
Inventor 周兵李晓琪张丽
Owner JILIN UNIV
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