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Pine moth sex pheromone microcapsule and preparation method thereof

A technology of microcapsules and pine caterpillars, which is applied in botany equipment and methods, chemicals for biological control, animal repellents, etc., can solve the problem that is only effective in a short distance, has no biodegradability, polymer Problems such as material accumulation, to achieve the effect of increasing the cost of prevention and control, reducing the speed of oxidation and decomposition, and stabilizing the release rate

Inactive Publication Date: 2015-08-05
INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solid carriers are mostly used in crops and orchards, such as rubber plugs, polyethylene tubes, polyethylene bags and hollow fibers, etc., and are also the most practically used release carriers. These release carriers have a service life of 60-140 days. Its disadvantages are Cannot maintain a stable release rate for a long time, trapping is only effective in a short distance, and is not biodegradable, resulting in the accumulation of polymer materials in the environment and cannot be processed

Method used

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  • Pine moth sex pheromone microcapsule and preparation method thereof
  • Pine moth sex pheromone microcapsule and preparation method thereof
  • Pine moth sex pheromone microcapsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The synthetic method of pine caterpillar sex pheromone microcapsule is as follows:

[0053] The first pre-polymerization: the amount of methyl methacrylate and methacrylic acid that will be refined is added to the there-necked flask in the mass ratio of 4:1, is 15g altogether, adds the initiator dibenzoyl peroxide of 0.1g, in React in a water bath at 60-70°C for 30 minutes, and stir with magnetic force.

[0054] The second emulsification: the wall material 15g and the core material 15g mixture are mixed with 150g mass concentration as 0.2% polyvinyl alcohol (PVA) aqueous solution, use shearing emulsifier to shear and emulsify 3min, rotating speed is 10000rpm, the essence of the emulsification process is to The process of crushing large particles of water into micro-groups with micron-sized particles.

[0055] The core materials are respectively cis 5, trans 7-dodecadienal (Z5, E7-12: Ald), cis 5, trans 7-dodecadienol (Z5, E7-12: OH), cis 5 , trans 7-dodecadiene acetat...

Embodiment 2

[0070] The synthetic method of pine caterpillar sex pheromone microcapsule is as follows:

[0071] The first pre-polymerization: the refined methyl methacrylate and methacrylic acid are added to a three-necked flask in a mass ratio of 4:1, which is 20g, and 0.1g of the initiator dibenzoyl peroxide is added, at 60 React in a water bath at -70°C for 30 minutes, and stir with magnetic force.

[0072] The second emulsification: mix 20g of wall material and 10g of core material with 150g mass concentration of polyvinyl alcohol (PVA) aqueous solution of 0.2%, use shear emulsifier to emulsify for 3min, the rotating speed is 10000rpm, the essence of the emulsification process is to The process of crushing large particles of water into micro-groups with micron-sized particles. The composition of the core material is the same as in Example 1.

[0073] The third molding: heat up (water bath) to 75°C for about 3 hours, wash and filter, and finally dry at 25°C for 72 hours to obtain whit...

Embodiment 3

[0082] The synthetic method of pine caterpillar sex pheromone microcapsule is as follows:

[0083] The first pre-polymerization: the refined methyl methacrylate and methacrylic acid are added to a three-necked flask in a mass ratio of 4:1, which is 10g, and 0.1g of the initiator dibenzoyl peroxide is added, at 60 React in a water bath at -70°C for 30 minutes, and stir with magnetic force.

[0084] The second emulsification: the wall material 10g and the core material 20g mixture are mixed with 150g mass concentration as 0.2% polyvinyl alcohol (PVA) aqueous solution, use the shearing emulsifier to shear and emulsify for 3min, the rotating speed is 10000rpm, the essence of the emulsification process is to The process of crushing large particles of water into micro-groups with micron-sized particles. The composition of the core material is the same as in Example 1. The third molding: heat up (water bath) to 75°C for about 3 hours, wash and filter, and finally dry at 25°C for 72...

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Abstract

The invention relates to a pine moth sex pheromone microcapsule and a preparation method thereof, belonging to the field of embedding technology for the pine moth sex pheromone microcapsule. The microcapsule comprises a microcapsule wall material and a microcapsule core material, wherein the microcapsule wall material is a prepolymer liquid formed by reaction among methyl methacrylate, methacrylic acid and an initiator, the microcapsule core material comprises pine moth sex pheromone and liquid paraffin, and pine moth sex pheromone is cis-5,trans-7-dodecadienal, cis-5,trans-7-codlemone, cis-5,trans-7-dodecadienyl acetate and / or cis-5-dodecadienyl acetate. The microcapsule provided by the invention has the advantages of sensitivity, specificity, high efficiency, a long lasting period, degradability, good biocompatibility, no pollution to the environment, low price, etc., can be used for population monitoring and large-scale trapping and killing and control of pine moth, is capable of accurately predicating next-generation population occurrence density and has good economic benefits and ecological benefits.

Description

technical field [0001] The invention relates to a pine caterpillar sex pheromone microcapsule and a preparation method thereof. The microcapsule is used to embed the sex pheromone to achieve the purpose of prolonging the release time of the pine caterpillar sex pheromone and strengthening the mating interference and trapping of the pine caterpillar. Caterpillar sex pheromone microcapsule embedding technology technology field. technical background [0002] There are more than 30 species of pine caterpillars of the genus Dendrolimus (Lepidoptera: Satyridae) insects in the world, and 27 species are distributed in my country, which is the country with the most abundant types of pine caterpillars. Pine caterpillars are important forestry pests in my country, often causing immeasurable losses to pine forests. It has the advantages of many types, strong reproductive capacity, and wide distribution. Thus, the control of pine caterpillars has always been an important and thorny task...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/28A01N35/02A01N31/02A01N37/02A01P19/00
Inventor 孔祥波李学琳杨茂发张真张苏芳
Owner INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
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