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Titanium dioxide for laminated paper with high light resistance and preparation method thereof

A technology of light resistance and laminated paper, applied in the field of titanium dioxide, can solve the problems of limited improvement of light resistance of titanium dioxide

Active Publication Date: 2021-09-14
HENAN BILLIONS NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, only by coating aluminum phosphate and hydrated alumina, the light resistance of titanium dioxide is limited, and further improvement is needed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Get the qualified abrasive slurry and pour it into the coating tank, and adjust the slurry concentration to be 300g / L (in the form of TiO 2 At the same time, the temperature was raised to 80°C; at the same time, 100g / L ZnSO was added which accounted for 0.5% of the mass fraction of the titanium dioxide substrate in the slurry 4 Solution (ZnSO 4 Addition and solution concentration are all in ZnO) and account for the 100g / L Na of 0.85% of the titanium dioxide substrate mass fraction in the slurry 4 P 2 o 7 Solution (Na 4 P 2 o 7 Addition amount and solution concentration are all in P 2 o 5 ), after 30 minutes, homogenize for 20 minutes; dilute H with 200g / L 2 SO 4 Adjust pH=5.0, adjust for 30 minutes, and homogenize for 45 minutes; add 100g / LH which accounts for 2.0% of the mass fraction of titanium dioxide substrate in the slurry 3 PO 4 Solution (H 3 PO 4 Addition amount and solution concentration are all in P 2 o 5 meter) and account for 160g / LNaAlO of 0....

Embodiment 2

[0050] Get the qualified abrasive slurry and pour it into the coating tank, and adjust the slurry concentration to be 300g / L (in the form of TiO 2 meter), while raising the temperature to 80°C; at the same time, adding 100g / L ZnSO4 that accounts for 1% of the mass fraction of the titanium dioxide base material in the slurry 4 Solution (calculated as ZnO) and 100g / L K that accounts for 1.7% of the mass fraction of titanium dioxide substrate in the slurry 4 P 2 o 7 solution (in P 2 o 5 ), after 30 minutes, homogenize for 20 minutes; dilute H with 100g / L 2 SO 4 Adjust pH=5.0, adjust for 30min, homogenize for 45min; add 100g / L H 3 PO 4 solution (in P 2 o 5 ) and account for 160g / L NaAlO that is 0.6% of the mass fraction of titanium dioxide substrate in the slurry 2 solution (as Al 2 o 3 ), keep pH=5.0, add 45min, all 30min; adjust the pH=8.0 of slurry with 200g / L dilute NaOH solution, account for the 150g / L Al of 3.0% titanium dioxide substrate mass fraction in the slu...

Embodiment 3

[0052] Get the qualified abrasive slurry and pour it into the coating tank, and adjust the slurry concentration to be 300g / L (in the form of TiO 2 meter), while raising the temperature to 80°C; simultaneously adding 100g / L ZnCl that accounts for 1.5% of the mass fraction of the titanium dioxide base material in the slurry 2 Solution (calculated as ZnO) and the 100g / L Na that accounts for 2.55% of the mass fraction of titanium dioxide substrate in the slurry 3 PO 4 solution (in P 2 o 5 100g / L dilute HCl to adjust pH=5.0, adjust 30min, and homogenize for 45min; 3 PO 4 solution (in P 2 o 5 ) and account for 160g / L NaAlO that is 0.6% of the mass fraction of titanium dioxide substrate in the slurry 2 solution (as Al 2 o 3Calculate), keep pH=5.0, add 45min, homogenize 30min; Regulate the pH=8.0 of slurry with 200g / L dilute NaOH solution, account for the 160g / L NaAlO of 3.0% mass fraction of titanium dioxide base material in the slurry 2 solution (as Al 2 o 3 meter) and 2...

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PUM

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Abstract

The invention discloses a titanium dioxide for laminated paper with high light resistance and a preparation method thereof, wherein the titanium dioxide comprises a titanium dioxide base material and a coating layer located on the surface of the titanium dioxide base material, and the coating layer sequentially includes Zinc phosphate coating layer, aluminum phosphate coating layer and aluminum hydroxide coating layer. The titanium dioxide provided by the invention has better light fastness, hiding power and hue, can be widely used in papermaking production, and is especially suitable for laminated paper with poor light fastness in the prior art.

Description

technical field [0001] The invention belongs to the technical field of titanium dioxide, and in particular relates to a titanium dioxide for laminated paper with high light resistance and a preparation method thereof. Background technique [0002] Titanium dioxide, also known as titanium dioxide, is a white inorganic pigment. Because of its good light scattering power, strong tinting power, good opacity, best whiteness and brightness, high chemical stability and good weather resistance, it is widely used in coatings, plastics, papermaking , ink, chemical fiber and rubber industries. [0003] Paper is the third largest user of titanium dioxide. Adding titanium dioxide to the paper can make the paper have better whiteness, gloss, strength and opacity. However, due to the existence of many photoactivation points on the surface of titanium dioxide, under sunlight, the oxygen ions in the crystal lattice lose electrons and become oxygen atoms, which have great activity, resulti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/36C09C3/06
CPCC09C1/3661C09C3/063
Inventor 陈建立周文静王永珊王莉萍冯亚阳
Owner HENAN BILLIONS NEW MATERIAL CO LTD
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