Preparation method of TiO2/illite inorganic UV-blocking agent

A UV shielding agent and illite technology, which is applied in the preparation field of TiO2/illite new inorganic ultraviolet shielding agent, can solve the problems of poor dispersion performance of nano-TiO2, limited application and research of illite, and reduced UV shielding performance. UV shielding performance, lower production cost, good dispersion in water phase

Active Publication Date: 2018-01-19
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The second is nano-TiO 2 The dispersion performance is poor, and it is very easy to agglomerate together, which will reduc...

Method used

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  • Preparation method of TiO2/illite inorganic UV-blocking agent
  • Preparation method of TiO2/illite inorganic UV-blocking agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024]Take 2g of the purified Jilin Antu illite powder, add 100mL of water, ultrasonically treat for 30min, then magnetically stir for 12h, then take 2.57g of titanium sulfate, add 42.86ml of water, stir well, slowly add to the illite dispersion, and then Stir magnetically for 2 h to make it fully mixed. Then use ammonia water as a precipitating agent to adjust the pH of the dispersion to 4.0. After continuing magnetic stirring for 2 hours, transfer the slurry to a polytetrafluoroethylene stainless steel hydrothermal reaction kettle and keep it warm at 180°C for 12 hours. drying under the hood to obtain TiO 2 / Illite composite powder UV shielding agent. The UV-Vis ultraviolet transmittance test of this sample shows that it can shield 50% of UVA and nearly 92% of UVB and UVC. Add water to the above sample to prepare a 20 g / l suspension, add 0.05 g of hydroxypropyl methylcellulose as a surfactant, and stir magnetically for 12 hours to obtain an anti-ultraviolet finishing sol...

Embodiment 2

[0026] Take 2g of Jilin Antu illite powder, add 100mL of water, ultrasonically treat for 30min, then magnetically stir for 12h, then take 6g of titanium sulfate, add 100mL of water, stir well and slowly add to the illite dispersion, magnetically stir for 2h to make it fully well mixed. Then use ammonia water as a precipitating agent to adjust the pH of the dispersion to 4.0. After continuing magnetic stirring for 2 hours, transfer the slurry to a polytetrafluoroethylene stainless steel hydrothermal reaction kettle and keep it warm at 180°C for 12 hours. After cooling down, perform solid-liquid separation and wash the precipitate, and dry the precipitate at 80°C , that is, the TiO 2 / Illite composite powder UV shielding agent. The UV-Vis ultraviolet transmittance test of this sample shows that it can shield 60% of UVA and close to 100% of UVB and UVC. Add water to the above sample to prepare a 20g / L suspension, add an appropriate amount of cetyltrimethylammonium bromide as ...

Embodiment 3

[0028] Take 1g of Jilin Antu illite powder, add 100mL of water, ultrasonically treat for 30min, then magnetically stir for 12h, then take 3g of titanium sulfate, add 100mL of water, stir well and slowly add to the illite dispersion, magnetically stir for 2h to make it fully well mixed. Then use ammonia water as a precipitating agent to adjust the pH of the dispersion to 6.0. After continuing magnetic stirring for 2 hours, transfer the slurry to a polytetrafluoroethylene stainless steel hydrothermal reaction kettle, and keep it warm at 160°C for 12 hours. After cooling down, perform solid-liquid separation and wash the precipitate, and dry the precipitate at 80°C. TiO 2 / Illite composite powder UV shielding agent. The UV-Vis ultraviolet transmittance test was carried out on the sample, and the results showed that it could shield 50% of UVA, 90% of UVB and 95% of UVC.

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Abstract

The invention relates to a preparation method of a TiO2/illite inorganic UV-blocking agent, which belongs to the technical field of a novel mineral functional material. The method fully uses high reflecting rate and surface charge of illite, and takes high-purity illite as a raw material, in a titanium sulfate hydro-thermal system, full dispersion and composition of nano-level TiO2 on the surfaceof illite are realized, and the problems of easy agglomeration and poor adhesive force of the nano TiO2/illite inorganic UV-blocking agent can be solved. The method can obviously reduce the productioncost, the process flow is simple, calcining is not required for products, the energy consumption is low, the obtained composite powder has good water phase dispersibility, and has good UV-blocking performance, and the TiO2/illite inorganic UV-blocking agent can be widely used for the fields of textile finishing and protection of a high-molecular material having high weatherability requirement such as an exterior coating.

Description

technical field [0001] The present invention relates to a kind of TiO 2 The invention discloses a preparation method of illite novel inorganic ultraviolet shielding agent, which belongs to the technical field of novel mineral functional materials. Background technique [0002] In recent years, due to the continuous destruction and thinning of the ozone layer, the dose and intensity of ultraviolet radiation reaching the earth's surface have been increasing. Therefore, the development of materials that can effectively shield ultraviolet rays has become a focus of attention and an important direction of research. We usually refer to materials that can shield ultraviolet rays as UV shielding agents. UV screeners are generally divided into two categories: organic UV screeners and inorganic UV screeners. The organic ultraviolet shielding agent mainly shields ultraviolet rays through absorption. The common organic ultraviolet shielding agents mainly include benzophenones, benzot...

Claims

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Application Information

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IPC IPC(8): D06M11/46D06M11/79D06M15/09D06M13/463
Inventor 蒋引珊巨昊李芳菲薛兵郭宏刚霍明远徐远俊董智强韩明磊
Owner JILIN UNIV
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