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Microcapsule with integrated ultraviolet shielding function and preparation method thereof

A microcapsule and external shielding technology is applied in the field of microcapsules with integrated ultraviolet shielding function and the field of preparation thereof, which can solve problems such as the decline of anti-ultraviolet performance, and achieve the effect of excellent anti-ultraviolet effect and promotion of ultraviolet absorption performance.

Active Publication Date: 2020-04-10
上海驰纺材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the purposes of the present invention is to address the problem that the anti-ultraviolet performance of the product per unit mass decreases after the organic ultraviolet absorber is coated, and proposes the idea and method of preparing microcapsules with integrated ultraviolet shielding function

Method used

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  • Microcapsule with integrated ultraviolet shielding function and preparation method thereof
  • Microcapsule with integrated ultraviolet shielding function and preparation method thereof
  • Microcapsule with integrated ultraviolet shielding function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Step 1: Weigh 6g of methyl methacrylate, 1g of methacrylic acid, 3g of pentaerythritol tetraacrylate, 0.3g of 2,2-azobisisobutyronitrile and 10g of 2-hydroxyl-4-methane Oxybenzophenone was mixed uniformly at 70°C to form an oil phase, and 1g of sodium lignosulfonate was weighed and dissolved in water to form a uniform water phase. Under high-speed shear (shear speed 9000rpm), the above-mentioned oil phase is slowly added to the water phase, and the high-speed shear emulsification is performed for 10 minutes, and the resulting oil-in-water emulsion is transferred to a three-necked flask, under nitrogen protection and reflux condensation conditions The temperature was raised to 85° C., the polymerization was continued for 3 hours, and then washed with ethanol and water and suction filtered to obtain a polyacrylate-coated UV-resistant microcapsule filter cake.

[0039] Step 2: Disperse the microcapsule filter cake in step 1 in deionized water to obtain a microcapsule dispe...

Embodiment 2

[0043] Step 1: Weigh 6g of methyl methacrylate, 1g of methacrylic acid, 3g of pentaerythritol tetraacrylate, 0.3g of 2,2-azobisisobutyronitrile and 20g of 2,2'-dihydroxy - 4-methoxybenzophenone, mixed uniformly at 70°C to form an oil phase, weighed 2g of sodium lignosulfonate and dissolved in water to form a uniform water phase. Under high-speed shear (shear speed 9000rpm), the above-mentioned oil phase is slowly added to the water phase, and the high-speed shear emulsification is performed for 10 minutes, and the resulting oil-in-water emulsion is transferred to a three-necked flask, under nitrogen protection and reflux condensation conditions The temperature was raised to 85° C., and the polymerization was continued for 5 hours, followed by washing with ethanol and water and suction filtration to obtain a polyacrylate-coated UV-resistant microcapsule filter cake.

[0044] Step 2: Disperse the microcapsule filter cake in step 1 in deionized water to obtain a microcapsule disp...

Embodiment 3

[0048] Step 1: Weigh 6g of methyl methacrylate, 1g of methacrylic acid, 3g of pentaerythritol tetraacrylate, 0.3g of 2,2-azobisisobutyronitrile and 20g of 2-hydroxyl-4-n- Octylbenzophenone was mixed uniformly at 50°C to form an oil phase, and 2g of sodium lignosulfonate was weighed and dissolved in water to form a uniform water phase. Under high-speed shear (shear speed 9000rpm), the above-mentioned oil phase is slowly added to the water phase, and the high-speed shear emulsification is performed for 10 minutes, and the resulting oil-in-water emulsion is transferred to a three-necked flask, under nitrogen protection and reflux condensation conditions The temperature was raised to 85° C., the polymerization was continued for 4 hours, and then washed with ethanol and water and suction filtered to obtain a polyacrylate-coated UV-resistant microcapsule filter cake.

[0049] Step 2: Disperse the microcapsule filter cake in step 1 in deionized water to obtain a microcapsule dispersi...

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Abstract

The invention relates to a microcapsule with an integrated ultraviolet shielding function and a preparation method thereof. The microcapsule is composed of an anti-ultraviolet capsule wall, an anti-ultraviolet emulsifier and an anti-ultraviolet capsule core. Compared with a microcapsule with an ultraviolet absorption material added in a capsule core only in the prior art, the capsule wall, the capsule core and the selected and used emulsifier in the prepared microcapsule have the anti-ultraviolet functions, so that the microcapsule has the more excellent anti-ultraviolet performance.

Description

technical field [0001] The invention belongs to the technical field of functional microcapsules, in particular to a microcapsule with an integrated ultraviolet shielding function and a preparation method thereof. Background technique [0002] Ultraviolet light is the general term for radiation with a wavelength between 10-400nm in the electromagnetic spectrum. The wavelength range of 10-100nm belongs to light ultraviolet, extreme ultraviolet and extreme ultraviolet. This part of the light cannot reach the surface of the earth. The wavelength of 100-280nm is called short-wave ultraviolet (UVC), and this part of the light is absorbed by the ozone layer when it passes through the surface of the earth. The wavelength of 280-315nm is called medium-wave ultraviolet (UVB), 90% of this part of light is intercepted by the atmosphere, and the wavelength of 315-400nm is called long-wave ultraviolet (UVA), this part of light can reach the surface of the earth almost 100% . As far as t...

Claims

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Application Information

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IPC IPC(8): D06M23/12D06M13/152D06M15/37D06M11/46D06M13/372B01J13/02C08F220/14C08F220/06C08F222/14C08F2/44D06M101/06
CPCD06M23/12D06M13/152D06M15/37D06M11/46D06M13/372B01J13/02C08F220/14C08F2/44D06M2101/06D06M2200/25
Inventor 王先锋杜博超靳晓松杨兴友朱建梅
Owner 上海驰纺材料科技有限公司
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