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Phosphorus containing small molecule/montmorillonite nano-composite flame retardant flame-retardance epoxy resin composite and preparation method thereof

An epoxy resin and nano-composite technology, which is applied in the field of flame retardancy, can solve the problems of low decomposition temperature and mechanical property damage, and achieve the effects of good thermal stability, high glass transition temperature, and good flame retardancy

Active Publication Date: 2016-06-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of low decomposition temperature of phosphorus-containing small molecule flame retardants and large damage to mechanical properties when added alone, and the problem of dispersibility of montmorillonite in epoxy resin. Small molecule / montmorillonite nanocomposite flame retardant flame retardant epoxy resin composition and preparation method thereof

Method used

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  • Phosphorus containing small molecule/montmorillonite nano-composite flame retardant flame-retardance epoxy resin composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Phosphorus-containing small molecule / montmorillonite nanocomposite flame retardant flame retardant epoxy resin composition comprising E-44 epoxy resin, curing agent diaminodiphenyl sulfone and phosphorus-containing small molecule / montmorillonite nanocomposite flame retardant , the mass percent of each component is as follows:

[0031] E-44 epoxy resin 74%

[0032] Diaminodiphenylsulfone 22%

[0033] Phosphorus-containing small molecule / montmorillonite nanocomposite flame retardant 4%

[0034] 1) Add the weighed E-44 epoxy resin, phosphorus-containing small molecule / montmorillonite nanocomposite flame retardant into the mixing kettle, raise the temperature to 140°C, and start stirring until the mixed solution is clear;

[0035] 2) Adjust the temperature of the epoxy resin mixture in 1) to 120°C, add the curing agent diaminodiphenylsulfone, and then stir until the curing agent diaminodiphenylsulfone is completely dissolved;

[0036] 3) Vacuumize the epoxy resin mixture...

Embodiment 2

[0039] Phosphorus-containing small molecule / montmorillonite nanocomposite flame retardant flame retardant epoxy resin composition comprising E-44 epoxy resin, curing agent diaminodiphenyl sulfone and phosphorus-containing small molecule / montmorillonite nanocomposite flame retardant , the mass percent of each component is as follows:

[0040] E-44 epoxy resin 72%

[0041] Diaminodiphenylsulfone 22%

[0042] Phosphorus-containing small molecule / montmorillonite nanocomposite flame retardant 6%

[0043] Its preparation method is identical with embodiment 1.

Embodiment 3

[0045] Phosphorus-containing small molecule / montmorillonite nanocomposite flame retardant flame retardant epoxy resin composition comprising E-44 epoxy resin, curing agent diaminodiphenyl sulfone and phosphorus-containing small molecule / montmorillonite nanocomposite flame retardant , the mass percent of each component is as follows:

[0046] E-44 epoxy resin 71%

[0047] Diaminodiphenylsulfone 21%

[0048] Phosphorus-containing small molecule / montmorillonite nanocomposite flame retardant 8%

[0049] Its preparation method is identical with embodiment 1.

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Abstract

The invention relates to a method of applying a phosphorus containing small molecule / montmorillonite nano-composite flame retardant to epoxy resin to improve the flame retardance of the epoxy resin, and belongs to the technical field of flame retardance. The small molecule / montmorillonite nano-composite flame retardant is added into the epoxy resin, solidification is performed, and the flame-retardance epoxy resin composite is obtained. The phosphorus containing small molecule comprises one or more of diphenylphosphine, diphenylphosphine oxide, triphenylphosphine, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and 1-oxygroup phosphonia-4-hydroxymethyl-2,6,7-trioxa bicyclo-[2.2.2] octane (PEPA). According to the obtained epoxy resin composite, the interlayer spacing is enlarged due to the fact that phosphorus containing small molecules enter montmorillonite layers, the epoxy resin can react with the phosphorus containing small molecules to enable a chain segment of a polymer to enter the montmorillonite layers, the montmorillonite layers can be peeled and dispersed more easily, and the polymer has the good flame retardance.

Description

technical field [0001] The invention relates to a phosphorus-containing small molecule / montmorillonite nanocomposite flame retardant flame retardant epoxy resin composition and a preparation method thereof, belonging to the technical field of flame retardant. Background technique [0002] As an important thermosetting material, epoxy resin (EP) has good physical and chemical properties, excellent bonding strength, stable product size, high hardness, good toughness, and can withstand alkali and most solvents. Good electrical performance, so it is widely used in military, civilian and other aspects. The epoxy itself is flammable and will drip with flaming droplets, igniting the underlying material. With the improvement of flame retardant performance requirements of electronic and electrical products, more and more attention has been paid to the research on its flame retardant modification. The flame retardants commonly used in the past were halogenated flame retardants, but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08K3/34C08K5/50C08K5/5313C08G59/50
CPCC08G59/50C08K3/346C08K5/50C08K5/5313C08L2201/02C08L2201/08C08L63/00
Inventor 杨荣杰何向东张文超
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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