Preparation method for microcapsule-coated insecticide controlled release textile

A technology of microcapsules and insecticides is applied in the field of preparation of microcapsule-coated insecticide controllable release textiles. Research and other issues to achieve the effect of good anti-mosquito and anti-mosquito effect, long-term anti-mosquito and anti-mosquito effect, simple and convenient operation

Pending Publication Date: 2019-03-22
TIANJIN YORKOOL INT TRADING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anti-mosquito textiles obtained by post-finishing cannot guarantee the uniformity of the insecticide on the textile, nor can it guarantee that the active ingredients of the insecticide can penetrate into the interior of the textile efficiently
Insecticides are easily washed off on the surface of textiles, and anti-mosquito textiles have poor washability
At the same time, the microcapsule anti-mosquito finishing liquid used for coating or impregnation is only based on the characteristics of the microcapsule itself in the process of controlling the slow release of insecticides. The specific controllable release mechanism has not been studied in detail, so it cannot be used. Realize the controlled release of insecticides, and then realize the long-term anti-mosquito effect. The so-called anti-mosquito effect will also weaken with the increase of washing times, and the anti-mosquito durability is often not as good as the textile effect obtained by the blending method.

Method used

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  • Preparation method for microcapsule-coated insecticide controlled release textile
  • Preparation method for microcapsule-coated insecticide controlled release textile
  • Preparation method for microcapsule-coated insecticide controlled release textile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The production raw materials include polyethylene, insecticide microcapsules (containing deltamethrin) and synergist microcapsules (containing butyronyl ether), and the content percentage of each raw material is:

[0042] Polyethylene: 99%; the content ratio of HDPE to LDPE is 3:1.

[0043] Insecticide microcapsules (containing deltamethrin): 0.5%; prepared by interfacial polymerization with deltamethrin as the core material and polyurea as the wall material, with an average particle size of 4 μm and a core-to-wall ratio of 1:4 - Microencapsulated particles between 4:1. The specific preparation method of insecticide microcapsules is as follows:

[0044] a) Oil phase preparation: fully dissolve 0.1%-0.4% deltamethrin in cyclohexanone, add toluene-2,4-diisocyanate and mix evenly;

[0045] b) Water phase preparation: disperse 3%-7% compound emulsifier into deionized water, and make emulsifier / water system under high shear rate;

[0046] c) emulsification: adding the oil...

Embodiment 2

[0062] The production raw materials include polyethylene, insecticide microcapsules (containing deltamethrin) and synergist microcapsules (containing butyronyl ether), and the content percentage of each raw material is:

[0063] Polyethylene: 95.3%; the content ratio of HDPE to LDPE is 30:1.

[0064] Insecticide microcapsules (containing deltamethrin): 1.5%; adopt the interfacial polymerization method described in Example 1 to prepare respectively with deltamethrin as the core material, polyurea as the wall material, and the ratio of core to wall is 1:2 , microcapsule particles with an average particle size between 1-8 μm.

[0065] Synergist microcapsules (containing synergistic ether): 3.2%; adopt the interfacial polymerization method described in Example 1 to prepare respectively with synergistic ether as the core material, polyurea as the wall material, and the core-to-wall ratio is 1:2, the average Microcapsule particles with a particle size between 1-8 μm.

[0066] The ...

Embodiment 3

[0076] The production raw materials include polyethylene, insecticide microcapsules (containing deltamethrin) and synergist microcapsules (containing butyronyl ether), and the content percentage of each raw material is:

[0077] Polyethylene: 96.8%; the content ratio of HDPE to LLDPE is 30:1.

[0078] Insecticide microcapsules (containing deltamethrin): 1.1%; the interfacial polymerization method described in Example 1 is used to prepare polyurethane as the wall material, and deltamethrin is the microcapsule of the core material, and its average particle diameter is 4.8 μm, the core-to-wall ratio is 2:1. The specific preparation method is:

[0079] a) Oil phase preparation: fully dissolve 0.73% deltamethrin in cyclohexanone, add toluene-2,4-diisocyanate and mix evenly;

[0080]b) Water phase preparation: disperse 5% of the compound emulsifier into deionized water, and make an emulsifier / water system at a high shear rate;

[0081] c) emulsification: adding the oil phase of s...

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Abstract

The invention relates to a preparation method for a microcapsule-coated insecticide controlled release textile. According to the method of preparing the microcapsule-coated insecticide controlled release textile by utilizing a microcapsule technology and a mode of blend melt spinning, pesticide such as an insecticide can accurately and uniformly permeate into fibers through the mode of blend meltspinning, the insecticide and a synergist are microencapsulated, so as to realize slow release in a polymer matrix, the particle size and the core-wall ratio of a microcapsule particle are further controlled to realize proportional release of the insecticide and the synergist, ensuring that the effective components of the textile subjected to washing can still migrates onto the surfaces of the fibers from the interiors, even if the number of washing times is increased, the effective components of the insecticide and the like can still reach relatively large release quantity, and finally, thetextile with better and durable mosquito prevention and killing effects. The method is simple and easy, and the controlled release of the insecticide can be maintained even after 20 washings, thus achieving the anti-mosquito and anti-mosquito effect.

Description

technical field [0001] The invention relates to a preparation method of microcapsule-coated insecticide controlled-release textiles. The microcapsule-coated insecticide can be integrated into a polymer matrix to protect humans and animals. Background technique [0002] More than half of the world's people live under the threat of mosquito-borne diseases. Mosquitoes spread diseases through contact with human blood. As a vector-borne disease, malaria caused by this has complex epidemic factors and has the characteristics of fast and easy transmission. Recurring characteristics and therefore a constant threat to human health. On this basis, mosquito control work is of great significance. A variety of mosquito control methods have also emerged one after another, and with the continuous improvement and innovation of mosquito control and mosquito control methods, the spread of malaria in some countries and regions has been controlled to a certain extent, but due to the emergence ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/28A01N53/08A01N43/30A01N25/34A01P7/04A01P17/00D01F8/06D01F1/10
CPCA01N25/28A01N25/34A01N43/30A01N53/00D01F1/103D01F8/06
Inventor 李晨彪尹青于万永张悦
Owner TIANJIN YORKOOL INT TRADING
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