Attractant sustained-release microcapsule for Xylosandrus crassiusculus as well as preparation method and application thereof

A technology for slow-release microcapsules and attractants, which is applied in the directions of microcapsule preparations, microsphere preparation, and harmful attractants, etc., can solve the problems of unsatisfactory slow-release effect of pheromones and volatile pheromones, and achieve environmental pollution. Small, easy to use, stable volatilization rate

Active Publication Date: 2021-12-28
SHANGHAI ACADEMY OF LANDSCAPE ARCHITECTURE SCI & PLANNING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pheromones are extremely volatile in the natural state, and conventional slow-release materials such as rubber slow-release and polyvinyl chloride slow-release bags have unsatisfactory slow-release effects on pheromones.

Method used

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  • Attractant sustained-release microcapsule for Xylosandrus crassiusculus as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of slow-release microcapsules of dark-winged bark beetle attractant, during specific preparation:

[0027] (1) Add 0.5g of dibenzoyl peroxide to the mixture of 40g of 2-methyl-2-acrylate methyl ester and 10g of 2-methyl-2-acrylic acid mixture, and carry out in a 70°C water bath Heating, after heating for 30 minutes, keep stirring at a speed of about 300 rpm to obtain a pre-polymerization solution (wall material).

[0028] (2) Take 0.05 g of bark beetle pheromone Conophthorin with a purity of more than 90%, dissolve it in 5 g of n-hexane solution, and finally add 5 g of paraffin wax solution to obtain a microcapsule core material mixture.

[0029] (3) 10g of the above-mentioned pre-polymerization solution and the microcapsule core material mixture are respectively taken, and mixed with 0.2% polyvinyl alcohol (PVA) aqueous solution with 20g mass concentration to carry out shear emulsification, and the emulsification process is carried out in a high-shear emulsifier...

Embodiment 2

[0031] A kind of slow-release microcapsules of dark-winged bark beetle attractant, during specific preparation:

[0032] (1) Add 0.5g of dibenzoyl peroxide to a mixture of 37.5g of 2-methyl-2-methyl acrylate and 9g of 2-methyl-2-acrylic acid, and place in a 70°C water bath After heating for 30 minutes, keep stirring at a speed of about 280rpm to obtain a prepolymerized solution (wall material).

[0033] (2) Take 0.05 g of bark beetle pheromone Conophthorin with a purity of more than 90%, dissolve it in 4.9 g of n-hexane solution, and finally add 4.9 g of paraffin wax solution to obtain a microcapsule core material mixture.

[0034] (3) 9g of the above-mentioned pre-polymerization liquid and the microcapsule core material mixture are respectively taken, and mixed with 0.2% polyvinyl alcohol (PVA) aqueous solution with 18g mass concentration to carry out shear emulsification, and the emulsification process is performed in a high-shear emulsifier To carry out, the reaction tempe...

Embodiment 3

[0036] A kind of slow-release microcapsules of dark-winged bark beetle attractant, during specific preparation:

[0037] (1) Add 0.5g of dibenzoyl peroxide to a mixture of 42.5g of 2-methyl-2-acrylic acid methyl ester and 12.5g of 2-methyl-2-acrylic acid in a water bath at 80°C Heat in the pot, and after heating for 30 minutes, keep stirring at a speed of about 330 rpm to obtain a pre-polymerized solution (wall material).

[0038] (2) Take 0.05 g of bark beetle pheromone Conophthorin with a purity of more than 90%, dissolve it in 5.25 g of n-hexane solution, and finally add 5.15 g of paraffin wax solution to obtain a microcapsule core material mixture.

[0039] (3) 10g of the above-mentioned pre-polymerization liquid and capsule core material mixture are respectively taken, mixed with 20g mass concentration of 0.2% polyvinyl alcohol (PVA) aqueous solution to carry out shear emulsification, and the emulsification process is carried out in a high-shear emulsifier , the reaction...

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Abstract

The invention discloses an attractant sustained-release microcapsule for Xylosandrus crassiusculus as well as a preparation method and application thereof. The capsule comprises a wall material and a core material, wherein the wall material is prepared from 2-methyl-2-methyl acrylate, 2-methyl-2-acrylic acid and dibenzoyl peroxide; the core material is prepared from Xylosandrus crassiusculus pheromone Conophthorin, normal hexane and paraffin; and polyvinyl alcohol is added into the wall material and the core material for emulsification to obtain the sustained-release microcapsule. The capsule is installed in a trapping and killing device and is used for trapping and killing the Xylosandrus crassiusculus, so that breeding of the Xylosandrus crassiusculus is stopped or reduced, and the purpose of protecting host plants is achieved.

Description

technical field [0001] The invention belongs to the technical field of pest control, and specifically relates to a slow-release microcapsule of an attractant for the beetle bark beetle and a preparation method and application thereof. Background technique [0002] The dark-winged beetle (Xylosandrus crassiusculus) is a stem borer pest. The insect has been widely distributed in tropical and subtropical regions of the world, with a wide range of hosts, and can harm at least 124 species of plants in 46 families, mainly including: ), etc., are currently one of the most widely distributed and most successfully invaded borer pests. [0003] At present, there are certain disadvantages in the existing methods of preventing and controlling the stalk beetle. For example, physical control methods such as removing dead trees and concentrating incineration have a series of problems such as manpower consumption and prohibition of burning in urban areas; and by spraying chrysanthemum Che...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/28A01N43/90A01N25/18A01P19/00A01M1/02B01J13/02
CPCA01N25/28A01N43/90A01N25/18A01M1/023B01J13/02
Inventor 高磊王章训路广亮孙荣华王凤
Owner SHANGHAI ACADEMY OF LANDSCAPE ARCHITECTURE SCI & PLANNING
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