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Preparation method of ultraviolet rejection attapulgite material

A technology of attapulgite and barrier material, applied in chemical instruments and methods, fibrous fillers, inorganic pigment treatment, etc., to achieve excellent colloidal properties, good shielding properties, and the effect of solving agglomeration

Active Publication Date: 2015-08-19
江苏科纳新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the simultaneous loading of nano-titanium dioxide and nano-zinc oxide composite particles on attapulgite for UV blocking

Method used

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  • Preparation method of ultraviolet rejection attapulgite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. Control the reaction temperature to 35°C, while stirring, add 2mol L to 0.8 liters -1 Slowly add 1mol·L dropwise to the NaOH aqueous solution -1 0.4 liters of aqueous titanium tetrachloride solution, the pH value of the system after the reaction is 7.0, the titanium dioxide hydrate generated by the reaction is filtered, and washed with deionized water to remove soluble salts to obtain a titanium dioxide hydrate filter cake;

[0019] 2. Add hydrochloric acid solution to 100 grams of attapulgite to prepare a hydrogen ion concentration of 1.5mol L -1 And 1.25 liters of the suspension with attapulgite content of 80 g / L, heat up to 96°C for 3 hours, cool down to 10°C, add the titanium dioxide hydrate filter cake obtained in step 1, heat for 120 hours, add solid partial zinc Sodium acid until the pH of the system is 6.5, continue to react for 2 hours, filter, and wash with deionized water to remove ions in the filter cake;

[0020] 3. The filter cake obtained in step 2 w...

Embodiment 2

[0022] 1. Control the reaction temperature at 25°C, while stirring, add 1mol L to 4 liters -1 Slowly add 0.5mol·L dropwise to the NaOH aqueous solution -1 2 liters of titanium tetrachloride aqueous solution, the pH value of the system after the reaction is 7.0, the titanium dioxide hydrate generated by the reaction is filtered, and washed with deionized water to remove soluble salts, to obtain a titanium dioxide hydrate filter cake;

[0023] 2. Add hydrochloric acid solution to 100 grams of attapulgite to prepare a hydrogen ion concentration of 0.3mol L -1 And 2 liters of the suspension with attapulgite content of 40 g / L, heated up to 88°C for 6 hours, then cooled to 0°C, added the titanium dioxide hydrate filter cake obtained in step 1, and kept the temperature at 0°C for 240 hours, Add sodium metazincate solid until the pH of the system is 7.5, continue to react for 3 hours, filter, and wash with deionized water to remove ions in the filter cake;

[0024] 3. The filter cak...

Embodiment 3

[0026] 1. Control the reaction temperature at 5°C, while stirring, add 3mol·L to 2 liters -1 Slowly add 3mol·L dropwise to the NaOH aqueous solution -1 0.5 liter of titanium tetrachloride aqueous solution, the pH value of the system after the reaction is 7.0, the titanium dioxide hydrate generated by the reaction is filtered, and washed with deionized water to remove soluble salts to obtain a titanium dioxide hydrate filter cake.

[0027] 2. Add hydrochloric acid solution to 120 grams of attapulgite to prepare a hydrogen ion concentration of 1mol L -1 And 1 liter of suspension with a content of attapulgite of 120 g / l, heat up to 100°C for 1 hour, and then cool down to 25°C, add the titanium dioxide hydrate filter cake obtained in step 1, and heat at 25°C for 48 hours, Add sodium metazincate solid until the pH of the system is 6.0, continue to react for 1 hour, filter, and wash with deionized water to remove ions in the filter cake;

[0028] 3. The filter cake obtained in ste...

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Abstract

The invention belongs to the field of preparation of nano-materials and inorganic nonmetallic materials, concretely relates to a preparation method of an ultraviolet rejection attapulgite material, and concretely discloses a method for supporting nanometer titanium dioxide and nanometer zinc oxide on the surface of attapulgite. The method comprises the following steps: adding an aqueous solution of a titanium salt into an aqueous alkali, reacting, filtering, and washing to prepare a titanium dioxide hydrate filter cake; and adding the titanium dioxide hydrate filter cake into an attapulgite suspension, carrying out a heat insulation reaction, adding zinc metamolybdate to the pH value of the obtained system of 6.0-7.5, filtering, washing, drying the obtained filter cake, and carrying out heat treatment at a high temperature to prepare the ultraviolet rejection attapulgite material.

Description

technical field [0001] The invention belongs to the field of preparation of nanometer materials and inorganic non-metallic materials, and in particular relates to a method for preparing an attapulgite ultraviolet blocking material, in particular to a method for loading nano-titanium dioxide and nano-zinc oxide on the surface of attapulgite. Background technique [0002] Because in the light radiated by the sun, there are about 5% ultraviolet rays (abbreviated as UV) with a wavelength of 200-400nm. Ultraviolet rays in sunlight can be divided into long-wave ultraviolet rays (UVA for short) of 320-400nm, medium-wave ultraviolet rays (UVB for short) of 280-320nm and short-wave ultraviolet rays (UVC for short) of 200-280nm wavelength according to their wavelengths. Since UVC has been basically absorbed in the outer layer of the atmosphere, it has little impact on humans. UVB and UVA are the root causes of damage to the earth's organisms and the aging, discoloration and decline o...

Claims

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Application Information

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IPC IPC(8): C08K9/12C08K3/34C08K3/22C09D7/12C09C1/42C09C3/06
Inventor 姚超罗士平左士祥李霞章刘文杰马建锋吴凤芹毛辉麾李为民
Owner 江苏科纳新材料有限公司
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