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A microcapsule with dual functions of mosquito repelling and anti-ultraviolet and its preparation method

A microcapsule, dual-function technology, applied in the fields of botanical equipment and methods, resistance to vector-borne diseases, and repellents, etc., can solve the problems of reducing and mutually affecting the effective content of functions, and achieves easy operation and long-lasting preparation process. Long-term mosquito repellent effect, good heat-resistant stability effect

Active Publication Date: 2021-08-10
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a microcapsule with dual functions of mosquito repelling and anti-ultraviolet and its preparation method, so as to overcome the problems in the prior art that the dual-functional capsule core materials affect each other and the effective content of each function is reduced, In the present invention, a capsule wall with anti-ultraviolet effect is constructed by combining nano-zinc oxide and titanium dioxide, and the capsule core with mosquito repelling effect is coated with it to prepare bifunctional microcapsules

Method used

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  • A microcapsule with dual functions of mosquito repelling and anti-ultraviolet and its preparation method
  • A microcapsule with dual functions of mosquito repelling and anti-ultraviolet and its preparation method
  • A microcapsule with dual functions of mosquito repelling and anti-ultraviolet and its preparation method

Examples

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Embodiment 1

[0047] A method for preparing microcapsules with dual functions of repelling mosquitoes and anti-ultraviolet, the specific steps are:

[0048] Step 1: Weigh 1 g of silane coupling agent KH570 and add it to 80% ethanol aqueous solution to obtain a pre-dispersion of KH570. Weigh 5g of nano-titanium dioxide or nano-zinc oxide and ultrasonically disperse it in the ethanol solution, then add the pre-prepared KH570 pre-dispersion, then react in a water bath at 75°C for 3 hours, and finally wash, filter and freeze-dry to obtain the modified nano titanium dioxide and nano zinc oxide.

[0049] Step 2: Weigh 1 g of gum arabic and add it into deionized water, and stir magnetically to obtain an emulsifier solution. Weigh 3.5g of methyl methacrylate, 1.5g of pentaerythritol tetraacrylate, 2.5g of mosquito repellent, 2.5g of citronella oil and 0.125g of modified nano-titanium dioxide, 0.125g of modified nano-zinc oxide mixed Evenly, the oil phase mixture is obtained. Then it was added in...

Embodiment 2

[0053] A method for preparing microcapsules with dual functions of repelling mosquitoes and anti-ultraviolet, the specific steps are:

[0054] Step 1: Weigh 1 g of silane coupling agent KH570 and add it to 80% ethanol aqueous solution to obtain a pre-dispersion of KH570. Weigh 5g of nano-titanium dioxide or nano-zinc oxide and ultrasonically disperse it in the ethanol solution, then add the pre-prepared KH570 pre-dispersion, then react in a water bath at 75°C for 3 hours, and finally wash, filter and freeze-dry to obtain the modified nano titanium dioxide and nano zinc oxide.

[0055] Step 2: Weighing 2 g of gum arabic and adding it into deionized water, and magnetic stirring to obtain an emulsifier solution. Weigh 3.5g of methyl methacrylate, 1.5g of pentaerythritol tetraacrylate, 6.7g of icaridin, 3.3g of citronella oil and 0.15g of modified nano-titanium dioxide, 0.15g of modified nano-zinc oxide Mix evenly to obtain an oil phase mixture. Then it was added into the emuls...

Embodiment 3

[0059] A method for preparing microcapsules with dual functions of repelling mosquitoes and anti-ultraviolet, the specific steps are:

[0060] Step 1: Weigh 1 g of silane coupling agent KH570 and add it to 80% ethanol aqueous solution to obtain a pre-dispersion of KH570. Weigh 5g of nano-titanium dioxide or nano-zinc oxide and ultrasonically disperse it in the ethanol solution, then add the pre-prepared KH570 pre-dispersion, then react in a water bath at 75°C for 3 hours, and finally wash, filter and freeze-dry to obtain the modified nano titanium dioxide and nano zinc oxide.

[0061] Step 2: Weighing 3g of gum arabic and adding it into deionized water, and magnetic stirring to obtain an emulsifier solution. Weigh 3.5g of methyl methacrylate, 1.5g of pentaerythritol tetraacrylate, 11.25g of methyl nonyl ketone, 3.75g of citronella oil and 0.25g of modified nano titanium dioxide, 0.25g of modified nano oxide Zinc is mixed evenly to obtain an oil phase mixed liquid. Then it w...

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Abstract

The invention relates to a microcapsule with dual functions of mosquito repelling and anti-ultraviolet and a preparation method thereof, comprising a capsule wall with an anti-ultraviolet function and a capsule core with a mosquito repellent function. The invention utilizes the complementary advantages of nano-titanium dioxide and nano-zinc oxide in absorbing ultraviolet radiation in different bands, endows the microcapsules with excellent ultraviolet shielding properties, and due to the slow-release effect of the microcapsules, the mosquito repellent can play a long-term anti-mosquito effect. The bifunctional microcapsule prepared by the invention has uniform particle size, excellent anti-ultraviolet function and mosquito repelling function, and has good application prospects in the fields of multi-functional summer wear textiles, outdoor textiles and daily chemicals.

Description

technical field [0001] The invention belongs to the field of functional microcapsules and a preparation method thereof, in particular to a microcapsule with dual functions of repelling mosquitoes and anti-ultraviolet rays and a preparation method thereof. Background technique [0002] In summer, mosquito bites have brought great troubles to human beings. On the one hand, mosquitoes will disturb people's normal work, life and rest. On the other hand, mosquitoes may become carriers of pathogens and threaten people's health. According to WHO data, in 2016, there were approximately 216 million malaria cases in 91 countries, an increase of 5 million cases over 2015, and the total number of malaria deaths in 2016 reached 445,000, compared with the figure in 2015 (446,000 cases) Basically the same. Malaria deaths among children under five have fallen from 440,000 in 2010 to 285,000 in 2016. But malaria remains a major killer of children under five, killing a child every two minut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/28A01N65/28A01N65/44A01N37/46A01N49/00A01N35/02A01N47/16A01P17/00D06M11/46D06M11/44D06M15/03D06M13/402D06M15/263D06M23/12D06M101/06
CPCA01N25/28A01N35/02A01N37/46A01N47/16A01N49/00A01N65/28A01N65/44D06M11/44D06M11/46D06M13/402D06M15/03D06M15/263D06M16/00D06M23/12D06M2101/06D06M2200/25Y02A50/30
Inventor 赵涛王先锋薛东吴京王美慧
Owner DONGHUA UNIV
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