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A kind of halloysite nanotube synergistic flame-retardant polyethylene material and preparation method

A technology of halloysite nanotubes and flame-retardant polyethylene, which is applied in the field of flame-retardant polyethylene materials, and can solve problems such as unsatisfactory flame-retardant effect of composite materials, great influence on material mechanical properties, and limitations on the application of halloysite nanotubes , to prevent agglomeration, enhance the effect of flame retardant modification, and overcome the effect of stress concentration

Active Publication Date: 2021-02-02
上海方北家居有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, halloysite nanotube synergistic flame retardants used in flame-retardant plastics in the prior art have unsatisfactory dispersion in the polymer matrix, resulting in unsatisfactory flame-retardant effects of composite materials, and have a negative effect on materials. The mechanical properties of halloysite nanotubes are greatly affected, which limits the application of halloysite nanotubes in flame retardant plastics. Therefore, it is of great significance to develop a composite plastic with highly dispersed halloysite nanotubes and synergistic flame retardancy.

Method used

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  • A kind of halloysite nanotube synergistic flame-retardant polyethylene material and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Place halloysite nanotubes in a fluidized bed with at least three nozzles, mix nanoscale inorganic flame retardant powder, dispersant, and deionized water evenly, prepare a dispersion, and spray through nozzle A , making the inorganic flame retardant powder form the first coating layer on the surface of the halloysite nanotube; the inorganic flame retardant powder is nano antimony trioxide powder; the dispersant is sodium stearate;

[0032] (2) Mix and disperse the initiator and catalyst in the silane coupling agent evenly, spray and deposit through nozzle B, and form a second layer of coating on the surface of the halloysite nanotube; the initiator is azobisisobutyronitrile; The catalyst is cuprous bromide; the silane coupling agent is gamma-aminopropyltriethoxysilane;

[0033] (3) Styrene monomer is heated to 86°C and sprayed and deposited through nozzle C to form a third layer of coating on the surface of halloysite nanotubes. At the same time, free radical polym...

Embodiment 2

[0037] (1) Place halloysite nanotubes in a fluidized bed with at least three nozzles, mix nanoscale inorganic flame retardant powder, dispersant, and deionized water evenly, prepare a dispersion, and spray through nozzle A , making the inorganic flame retardant powder form the first coating on the surface of the halloysite nanotube; the inorganic flame retardant powder is nano magnesium hydroxide powder; the dispersant is potassium stearate;

[0038] (2) Mix and disperse the initiator and catalyst in the silane coupling agent evenly, spray and deposit through nozzle B, and form a second coating on the surface of the halloysite nanotube; the initiator is azobisisoheptanonitrile; The catalyst is cuprous chloride; the silane coupling agent is N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane;

[0039] (3) Styrene monomer is heated to 80°C and sprayed and deposited through nozzle C to form a third layer of coating on the surface of halloysite nanotubes. At the same time, free radical p...

Embodiment 3

[0043] (1) Place halloysite nanotubes in a fluidized bed with at least three nozzles, mix nanoscale inorganic flame retardant powder, dispersant, and deionized water evenly, prepare a dispersion, and spray through nozzle A , making the inorganic flame retardant powder form the first coating layer on the surface of the halloysite nanotube; the inorganic flame retardant powder is nano aluminum hydroxide powder; the dispersant is magnesium stearate;

[0044] (2) Mix and disperse the initiator and catalyst in the silane coupling agent evenly, spray and deposit through nozzle B, and form a second layer of coating on the surface of halloysite nanotubes; the initiator is azobisisobutyric acid di Methyl ester; the catalyst is cuprous bromide; the silane coupling agent is N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane;

[0045] (3) Styrene monomer is heated to 90°C and sprayed and deposited through nozzle C to form a third coating layer on the surface of halloysite nanotubes. At t...

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Abstract

The invention belongs to the technical field of flame-retardant polyethylene materials, and provides a halloysite nanotube cooperatively flame-retardant polyethylene material and a preparation methodthereof. The method comprises the following steps: sequentially coating the surface of a halloysite nanotube with an inorganic flame-retardant powder layer, a coupling agent layer and a polystyrene layer to prepare a halloysite nanotube / inorganic flame-retardant powder / polystyrene composite filler, mixing the composite filler with polyethylene, and carrying out extruding granulation to obtain thehalloysite nanotube cooperatively flame-retardant polyethylene material. Compared with polyethylene materials prepared by conventional methods, the polyethylene material prepared in the invention hasthe advantages of good dispersion of the halloysite nanotubes and the inorganic flame-retardant powder in a matrix, non-agglomeration, good flame retardation modification effect and good mechanical performances.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant polyethylene materials, and provides a flame-retardant polyethylene material with halloysite nanotubes and a preparation method. Background technique [0002] With the development of the polymer material industry, plastics are more and more widely used in various fields of production and life. At the same time, fires caused by the flammability of plastics have also caused heavy casualties and huge economic losses. Therefore, the application and development of flame-retardant plastics has become an inevitable trend. With the development of electrical appliances, electronics, machinery, automobiles, ships, aerospace and chemical industry, the flame retardant requirements for product materials are getting higher and higher, so that the development, production and promotion of flame retardants and flame retardant materials can be developed rapidly. . [0003] There are many kinds of flame re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08K13/06C08K9/10C08K7/26C08K3/22C08K5/098
CPCC08K3/22C08K3/2279C08K5/098C08K7/26C08K9/10C08K13/06C08K2003/2224C08K2003/2227C08K2201/011C08L2201/02C08L23/06
Inventor 张玉英
Owner 上海方北家居有限公司