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Thermoplastic polyalcohol/clay soil nano-composite material, preparation method and application thereof

A nano-composite material, thermoplastic polymer technology, applied in the fields of botanical equipment and methods, applications, animal repellants, etc., can solve the problems of phase separation, insufficient dispersion of metal compounds or nano-silver ions, etc., and reduce the release rate. , reduce pollution consequences, improve the effect of utilization

Inactive Publication Date: 2008-10-29
BEIJING ZHONGKE PUHUI TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The thermoplastic polymer / clay nanocomposite material of the present invention utilizes the intercalation principle of polymer and clay compounding, overcomes the existence of metal compounds or nano-silver when preparing antibacterial plastics or polypropylene special materials by blending methods in the prior art Disadvantages of insufficient uniform dispersion of ions or even phase separation, providing a way to intercalate biologically active substances in the space layer of the layered clay that has been organized or through an intercalation agent, intercalate with the clay, and then, with the polymer under melting conditions In the form of co-intercalation, bioactive substances and clay are randomly and uniformly dispersed in the polymer matrix to form a polymer / clay nanocomposite material with a molten intercalation composite structure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Example 1: Add 100 g of calcium-based or sodium-based montmorillonite clay with a total ion exchange capacity of 80meq / 100g to 2000 g of water and wait for uniform dispersion, then stir at a high speed to obtain a clay suspension; cetyltrimethylammonium chloride 34g, 0.7g of "Ding.Benzyl" mixture, add 500g of water and stir at 60°C, then add it to the above clay suspension, stir for 2 hours, cool, filter, wash, dry, and pulverize for later use; weigh 85g of thermoplastic Put the solid phenolic resin in a three-necked flask, heat up to 130° C. in an oil bath to melt the resin, add 15 g of the above blend under stirring, and keep stirring for 2 hours to obtain a thermoplastic phenolic resin / clay nanocomposite material.

Embodiment 2

[0063] Example 2: Add 100 g of calcium-based or sodium-based montmorillonite clay with a total ion exchange capacity of 100 meq / 100 g to 2000 g of water to be uniformly dispersed, and stir at a high speed to obtain a clay suspension; stearyltrimethylammonium chloride 34g, Trisulfuron-methyl 0.7g, add 500g of water and stir at 60°C, add it to the above clay suspension, stir for 2 hours, cool, filter, wash, dry, and pulverize for later use; weigh 90g of thermoplastic solid phenolic resin Put it in a three-necked flask, and raise the temperature to 140°C in an oil bath to melt the resin. 10 g of the above blend was added under stirring, and kept stirring for 2 hours to obtain a thermoplastic phenolic resin / clay nanocomposite material.

Embodiment 3

[0064] Example 3: Add 100 g of calcium-based or sodium-based montmorillonite clay with a total ion exchange capacity of 100 meq / 100 g to 2000 g of water to be uniformly dispersed, then stir at a high speed to obtain a clay suspension; cetyltrimethylammonium chloride 34g, ethametsulfuron 0.7g, add water 500g and stir at 60°C, add it to the above clay suspension, stir for 1 hour, cool, filter, wash, dry, and pulverize for later use; put 90g of thermoplastic phenolic resin, put In a three-necked flask, the temperature was raised to 160° C. in an oil bath to melt the resin. 10 g of the above blend was added under stirring, and kept stirring for 2 hours to obtain a thermoplastic phenolic resin / clay nanocomposite material.

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Abstract

The invention relates to a thermoplastic polymer / clay composite nanomaterial, particularly to a polymer / clay composite nanomaterial for pesticides. The composite nanomaterial is produced by the following steps: intercalating and mixing 2-15 parts of calcium-based or sodium-based montmorillonite clay with a total ion exchange capacity of 80meq-100 meq / 100g, 0.005-0.1 parts of bioactive substances and 0.5-5 parts of quaternary ammonium salt intercalator based on the intercalation method to obtain a uniformly-dispersed blend; mixing 2-15 parts of the uniformly-dispersed blend with 85-98 parts of thermoplastic polymers in molten state; stirring thoroughly; and performing melt-intercalation and extrusion-molding. The thermoplastic polymer / clay composite nanomaterial can reduce the release rate of herbicides and can be further processed into powder, blocks, a drip irrigation device, strips and pipes.

Description

technical field [0001] The invention relates to a polymer / clay nanocomposite material, in particular to a polymer / clay nanocomposite material used for pesticides and fertilizers. Background technique [0002] Polymer / clay nanocomposites are the most promising class of nanocomposites among many inorganic nanoparticle modified composites. The clay is a kind of mineral whose main component is layered silicate containing 85-93% montmorillonite (Mont). Its unit cell is composed of two layers of silicon-oxygen tetrahedron with a layer of aluminum-oxygen octahedron in the middle, and the two are connected by shared oxygen atoms. The surface area of ​​the unit cell is 2×0.515×0.89nm 2 , the unit cell weight is 700-800g / mol; the inner surface of the montmorillonite clay layer has negative charges, each negative charge occupies an area of ​​0.25-2nm2, and the specific surface area is 700-800m 2 / g. Interlayer cation Na + , Ca 2+ , Mg 2+ etc. are exchangeable cations, and long-ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/10C08L61/06C08J3/20C08J3/12C08J5/00C08K9/00A01N25/08C08K3/34C08K5/43
Inventor 关家玉欧晓斌
Owner BEIJING ZHONGKE PUHUI TECH DEV
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