A kind of titanium dioxide surface treatment method and modified titanium dioxide

A technology for surface treatment and titanium dioxide, applied in the field of titanium dioxide surface treatment method and modified titanium dioxide, to achieve the effects of low dusting, high fluidity and temperature resistance, and improving use efficiency

Active Publication Date: 2022-03-22
HENAN BILLIONS NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for treating the surface of titanium dioxide and modified titanium dioxide, thereby solving the aforementioned problems in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0046] The molecular formula of 19.0g is CH 3 (CH 2 ) 3 Si(OCH 2 CH 3 ) 2 CH 3 The silane was added to 8.28g of ethanol, under the conditions of 25°C and pH 3.5, the hydrolysis reaction of silane was carried out to obtain silane hydrolyzate;

[0047] The molecular formula of 7.0g is OP(OH) 2 (O(CH 2 ) 17 CH 3 ) was added to 0.36 g of water, and under the conditions of 25° C. and pH 4.0, the hydrolysis reaction of the alkyl phosphate monoester was carried out to obtain an alkyl phosphate monoester hydrolyzate;

[0048] The silane hydrolyzate and the alkyl phosphate monoester hydrolyzate were subjected to polycondensation reaction at a temperature of 50°C and a pH of 6.5 to obtain a phosphate-terminated oligomer with a viscosity of 30 cp and a degree of polymerization of 10;

[0049] Take the titanium dioxide base material in the form of flash material;

[0050] The oligomer obtained above is added according to 5‰ of the titanium dioxide base material, and after being...

specific Embodiment 2

[0052] The molecular formula of 23.2g is CH 3 (CH 2 ) 8 Si(OCH 3 ) 2 CH 3 The silane was added into 6.0g of propanol, under the conditions of 50°C and pH 4.5, the hydrolysis reaction of silane was carried out to obtain silane hydrolyzate;

[0053] The molecular formula of 1.54g is OP(OH) 2 (O(CH 2 ) 3 CH 3 ) was added to 3.6 g of water, and under the conditions of 45° C. and pH 3.5, the hydrolysis reaction of the alkyl phosphate monoester was carried out to obtain an alkyl phosphate monoester hydrolyzate;

[0054] The silane hydrolyzate and the alkyl phosphate monoester hydrolyzate were subjected to a polycondensation reaction at a temperature of 35° C. and a pH of 5.5 to obtain a phosphate-terminated oligomer with a viscosity of 500 cp and a degree of polymerization of 20;

[0055] Take the titanium dioxide base material in the form of flash material;

[0056] The oligomer obtained above was added according to 8‰ of the titanium dioxide base material, and after bein...

specific Embodiment 3

[0058] The 41.6g molecular formula is CH 3 (CH 2 ) 17 Si(OCH 2 CH 3 ) 3 The silane was added to 2.16g of water, under the conditions of 45°C and pH 4.0, the hydrolysis reaction of silane was carried out to obtain silane hydrolyzate;

[0059] The molecular formula of 13.3g is OP(OH)(O(CH 2 ) 8 CH 3 ) 2 The alkyl phosphate diester is added to 2.76g of ethanol, under the conditions of 50°C and pH 4.5, the hydrolysis reaction of the alkyl phosphate monoester is carried out to obtain the hydrolyzate of the alkyl phosphate monoester;

[0060] The silane hydrolyzate and the alkyl phosphate monoester hydrolyzate were subjected to a polycondensation reaction at a temperature of 25° C. and a pH of 3.5 to obtain a phosphate-terminated oligomer with a viscosity of 380 cp and a degree of polymerization of 5;

[0061] Take the titanium dioxide base material in the form of flash material;

[0062] The oligomer obtained above was added according to 15‰ of the titanium dioxide base m...

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Abstract

The invention discloses a titanium dioxide surface treatment method and modified titanium dioxide. The method uses silane and phosphoric acid ester to obtain an oligomer with a viscosity of 1-500cst and a polymerization degree of 5-20 through hydrolysis and polycondensation reaction. Polymer is used as a surface treatment agent to treat the surface of titanium dioxide, and the obtained modified titanium dioxide has high fluidity and temperature resistance, which is conducive to improving the use efficiency of titanium dioxide in industrial applications; it also has low dust emission, Reduce the amount of dust in the air of the production workshop, so that the environment of the finished product packaging workshop of titanium dioxide and the downstream use workshop environment of titanium dioxide can meet the national regulatory benchmarks: GBZ 2.1‑2007 "Restrictions on Occupational Exposure to Hazardous Factors in the Workplace" to protect the health of employees Occupational health, improving the air quality around the enterprise.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to a method for treating the surface of titanium dioxide and modified titanium dioxide. Background technique [0002] Titanium dioxide is the most important kind of white pigment, which is widely used in coatings, plastics, papermaking, ink and other industries. Especially in the plastic industry, in order to increase the processing performance of the product, and at the same time prevent the adsorption of moisture by the titanium dioxide during storage and transportation, and reduce the impact of the titanium dioxide on the anti-crack performance and weather resistance of the plastic film product, it will affect the Titanium dioxide for organic surface treatment. [0003] At present, most of the organic surface treatment agents used for organic surface treatment of titanium dioxide are silicone additives, and titanium dioxide is made into a highly hydrophobic type. In t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/08C09C1/36C09C3/08
CPCC01G23/08C09C1/3669C09C3/08
Inventor 陈建立张美杰李瑞瑞赵姗姗王永珊冯亚阳赵丁张健
Owner HENAN BILLIONS NEW MATERIAL CO LTD
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