Method for improving weather resistance of decorative base paper titanium dioxide

A technology of decorating base paper and titanium dioxide, which is applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve problems such as ideological constraints, and achieve the effects of reducing leakage, improving washing quality, and prolonging service life

Active Publication Date: 2017-12-22
HEBEI MILSON TITANIUM DIOXIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These existing methods of improving weather resistance are too restrictive, leading people to develop and research only towards titanium dioxide coating treatment

Method used

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  • Method for improving weather resistance of decorative base paper titanium dioxide
  • Method for improving weather resistance of decorative base paper titanium dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] ⑴Add TiO to the slurry after bleaching 2 Sol: Titanium dioxide sol concentration 105.5g / L, according to sol TiO 2 / Metatitanate TiO 2 The ratio is 2.0%, adding titanium dioxide sol to the metatitanic acid slurry after bleaching.

[0033] (2) Pulping with metatitanic acid after secondary washing: Take 1300g of metatitanic acid (TiO 2 31.5%), add desalted water 150ml, stir evenly, make about 370.3g / LTiO 2 slurry.

[0034] (3) Add phosphoric acid: the phosphoric acid concentration is 84.6%, press 0.28%P 2 o 5 The ratio is added to the slurry and stirred for 30 minutes.

[0035] ⑷Add potassium carbonate solution: the concentration of potassium carbonate solution is 485.2g / LK 2 O, by 0.4% K 2 O proportion was added to the slurry and stirred for 30 minutes.

[0036](5) Add aluminum sulfate: the concentration of aluminum sulfate is 97.3g / L, according to 0.4% Al 2 o 3 The ratio is added to the slurry and stirred for 30 minutes.

[0037] ⑹Membrane filter press: salt ...

Embodiment 2

[0041] ⑴Add TiO to the slurry after bleaching 2 Sol: Titanium dioxide sol concentration 115.2g / L, according to sol TiO 2 / Metatitanate TiO 2 The ratio is 5.0%, adding titanium dioxide sol to the metatitanic acid slurry after bleaching.

[0042] (2) Metatitanic acid pulping after secondary washing: Take 1300g (TiO2 30.8%) of metatitanic acid for secondary washing, add 150ml desalted water, stir well, and make about 359.6g / LTiO 2 slurry.

[0043] (3) Add phosphoric acid: the concentration of phosphoric acid is 84.6%, press 0.20%P 2 o 5 The ratio is added to the slurry and stirred for 30 minutes.

[0044] ⑷Add potassium carbonate solution: the concentration of potassium carbonate solution is 462.8g / LK 2 O, by 0.5% K 2 O proportion was added to the slurry and stirred for 30 minutes.

[0045] (5) Add aluminum sulfate: the concentration of aluminum sulfate is 98.6g / L, according to 0.5% Al 2 o 3 The ratio is added to the slurry and stirred for 30 minutes.

[0046] ⑹Membran...

Embodiment 3

[0050] ⑴Add TiO to the slurry after bleaching 2 Sol: Titanium dioxide sol concentration 125.3g / L, according to sol TiO 2 / Metatitanate TiO 2 The ratio is 4.0%, adding titanium dioxide sol to the metatitanic acid slurry after bleaching.

[0051] (2) Pulping with metatitanic acid after secondary washing: Take 1300g of metatitanic acid (TiO 2 32.4%), add desalted water 300ml, stir evenly, make about 338.0g / LTiO 2 slurry.

[0052] (3) Add phosphoric acid: phosphoric acid concentration is 84.6%, press 0.25%P 2 o 5 The ratio is added to the slurry and stirred for 30 minutes.

[0053] ⑷Add potassium carbonate solution: the concentration of potassium carbonate solution is 495.3g / LK 2 O, by 0.3% K 2 O proportion was added to the slurry and stirred for 30 minutes.

[0054] (5) Add aluminum sulfate: the concentration of aluminum sulfate is 105.1g / L, according to 0.5% Al 2 o 3 The ratio is added to the slurry and stirred for 30 minutes.

[0055] ⑹Membrane filter press: salt tr...

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Abstract

The invention provides a method for improving weather resistance of decorative base paper titanium dioxide, and belongs to the technical field of decorative base paper titanium dioxide. The control is performed through salt treatment and calcination. The method comprises the following steps of A, using bleached slurry as raw materials; adding titanium dioxide sol into the raw materials; controlling the addition to meet the requirement that the proportion of TiO2 in the titanium dioxide sol to TiO2 in metatitanic acid is 2 to 6 percent; performing water washing; diluting the slurry subjected to water washing into 300 to 400g / L TiO2 slurry; B, adding potassium and phosphorus solution with the K2O / P2O5 ratio being 1.3 to 4.0 into the diluted slurry; performing stirring; adding aluminum-containing compound solution according to the Al2O3 to TiO2 proportion being 0.3 to 0.9 percent; performing stirring; C, performing pressurized filtering on the slurry material treated by the step B until the filter cake solid content is 45 to 55 percent; C, roasting the filter cake in the step C for 8 to 10h at the roasting temperature of 200 to 950 DEG C. Through the control on the salt treatment and roasting processes, the primary product weather resistance of the decorative base paper titanium dioxide is improved; the weather resistance of the decorative base paper titanium dioxide is further improved.

Description

technical field [0001] The invention belongs to the technical field of titanium dioxide for decorative base paper, and relates to research on the weather resistance of titanium dioxide for decorative base paper, in particular to a method for improving the weather resistance of titanium dioxide for decorative base paper. The method of the present invention abandons the existing inertial thinking of improving the weather resistance by post-processing the coating of titanium dioxide, and improves the weather resistance of the primary decorative base paper titanium dioxide by controlling the salt treatment and calcination process, thereby improving the durability of the decorative base paper titanium dioxide. Weather resistance has opened up a new way of thinking. Background technique [0002] There are two production methods of titanium dioxide, namely sulfuric acid method and chlorination method. The production capacity of sulfuric acid method and chlorination method in the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/047C01G23/08
CPCC01G23/047C01G23/08C01P2006/62C01P2006/63C01P2006/64
Inventor 张建平张川张千张潇
Owner HEBEI MILSON TITANIUM DIOXIDE
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