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
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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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