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Preparation method of attapulgite-based full-wave-band ultraviolet shielding material

An attapulgite, full-band technology, applied in skin care preparations, pharmaceutical formulations, cosmetic preparations, etc., can solve the problems of reducing the crystallinity of MBBT, poor UV shielding performance, etc., to improve the degree of dispersion, cost control, operation handy effect

Active Publication Date: 2018-02-23
常州大学盱眙凹土研发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the crystallinity of MBBT, crystal grains with a grain size of more than 1 μm are usually formed. When the grain size of MBBT reaches 200 nm, its ultraviolet shielding performance is very poor, so the crystallinity of MBBT is reduced, and its grain size is controlled. Size is the bottleneck problem to be solved in the development of high-efficiency organic UV screeners

Method used

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  • Preparation method of attapulgite-based full-wave-band ultraviolet shielding material
  • Preparation method of attapulgite-based full-wave-band ultraviolet shielding material
  • Preparation method of attapulgite-based full-wave-band ultraviolet shielding material

Examples

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Embodiment 1

[0021] (1) At a temperature of 70°C, while stirring, add 1.0 liter of dodecyldimethylbenzyl ammonium chloride aqueous solution with a molar concentration of 1.0 mol / liter to 15 liters of attapulgite with a content of 50 grams / liter. 1 liter of slurry, after heat preservation and aging for 1 hour, add 0.7 liter of ethanol solution of KH540 with a molar concentration of 0.5 mol / liter while stirring, and after heat preservation and aging for 1 hour, suction filter, wash the filter cake and dry it at 80° Dry and pulverize to obtain organic surface modified attapulgite;

[0022] (2) Disperse the attapulgite with organic surface modification obtained in step (1) into 4.5 liters of ethyl acetate, and at a temperature of 60°C, add 500 liters of 1 gram / liter of ethyl acetate while stirring. After adding the ethyl acetate solution of MBBT, increase the temperature by 80°C until all the ethyl acetate is evaporated (the evaporated ethyl acetate is condensed and recovered), and the ATP@MBB...

Embodiment 2

[0024] (1) At a temperature of 80°C, while stirring, add 0.5 liter of cetyltrimethylammonium chloride aqueous solution with a molar concentration of 3.0 mol / liter to 13 liters of attapulgite content of 60 g / liter In the slurry, after heat preservation and aging for 1.5 hours, add 1.0 liter of ethanol solution of KH550 with a molar concentration of 0.7 mol / liter while stirring, and after heat preservation and aging for 1.5 hours, suction filter, wash the filter cake and dry it at 100°C. Pulverizing, that is, attapulgite with organic surface modification;

[0025] (2) Disperse the attapulgite with the organic surface modification obtained in step (1) into 3 liters of ethyl acetate, and at a temperature of 70°C, add 600 liters of 1.2 g / l of acetic acid while stirring. After adding the ethyl acetate solution of MBBT, increase the temperature by 75°C until all the ethyl acetate is evaporated (the evaporated ethyl acetate is condensed and recovered), and the ATP@MBBT composite mater...

Embodiment 3

[0027] (1) At a temperature of 70°C, while stirring, add 1.5 liters of octadecyl phosphate-substituted ammonium aqueous solution with a molar concentration of 1.5 mol / liter to 17.5 liters of a slurry with an attapulgite content of 100 g / liter After heat preservation and aging for 2 hours, add 1.5 liters of KH570 ethanol solution with a molar concentration of 1.0 mol / liter while stirring, and after heat preservation and aging for 0.5 hours, filter with suction, wash the filter cake and dry it at 110°C, and crush it. That is, attapulgite with organic surface modification is obtained;

[0028] (2) Disperse the attapulgite with the organic surface modification obtained in step (1) into 6 liters of ethyl acetate, and at a temperature of 65°C, add 1270 liters of 1.1 g / l of acetic acid with a mass concentration of 1.1 g / l while stirring After adding the ethyl acetate solution of MBBT, increase the temperature by 90°C until all the ethyl acetate is evaporated (the evaporated ethyl ace...

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Abstract

The invention belongs to the technical field of preparation of materials with protection functions, and particularly relates to a preparation method of an attapulgite-based full-wave-band ultravioletshielding material. The preparation method comprises the steps that a cation surfactant solution is added into attapulgite slurry, then a coupling agent solution is added, full mixing and heat-preservation curing are conducted, and organic surface-modified attapulgite is prepared; obtained attapulgite is dispersed in ethyl acetate, MBBT is added, full mixing and heating are conducted to remove ethyl acetate, and the ATPatMBBT composite material, namely the attapulgite-based full-wave-band ultraviolet shielding material, is obtained.

Description

technical field [0001] The invention belongs to the technical field of preparation of protective functional materials, and in particular relates to a preparation method of an attapulgite-based full-band ultraviolet shielding material. Background technique [0002] Ultraviolet rays in sunlight can easily cause the aging of organic polymer materials, affect the performance of products, and cause great harm to human health. The development of ultraviolet shielding materials has attracted widespread attention. Ultraviolet shielding materials can be divided into two categories: organic ultraviolet shielding agents and inorganic ultraviolet shielding agents. Among them, the inorganic UV shielding agents mainly include nano-TiO 2 And nano ZnO, nano TiO 2 The performance of shielding UVB is excellent, but the shielding effect of long-wave ultraviolet (UVA) is not ideal; while the shielding effect of nano-ZnO on UVA is better, but its shielding performance of UVB is not good, so it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/12C08K9/06C08K9/04C08K3/34C08K5/3475C09D7/48A61K8/26A61Q17/04A61Q19/00
CPCA61K8/26A61Q17/04A61Q19/00C08K3/346C08K5/3475C08K9/04C08K9/06C08K9/12
Inventor 姚超王栋左士祥李霞章刘文杰钟璟陈乐王灿
Owner 常州大学盱眙凹土研发中心
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