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Flame-proof epoxide resin nano compound material

A nanocomposite and epoxy resin technology, which is applied in the field of polypentaerythritol phosphate melamine salt flame-retardant epoxy resin nanocomposite materials, can solve the problems of poor flame retardancy or mechanical properties, and achieve good flame retardancy , good compatibility, the effect of adding a small amount

Inactive Publication Date: 2008-01-30
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the present invention is to disclose a polypentaerythritol phosphate ester melamine salt intumescent flame-retardant system and its composite flame-retardant epoxy resin with organic montmorillonite, so as to overcome the flame-retardant performance or mechanical properties of the prior art. Defects such as poor performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In a 250ml three-necked flask, put 10g of sodium montmorillonite, 50ml of aqueous ethanol (ethanol / water=2:1 volume ratio), 20g of vinyltrimethoxysilane, then heat the mixture to 80°C, turn on the stirring, Reaction for 6h; then lowered to room temperature and filtered. The filter cake, namely the modified montmorillonite, was washed twice with acetone to remove excess silane coupling agent on the surface. Heated to 80°C, kept at constant temperature for 12 hours, dried, and ground into a white powdery solid.

[0030] Add 5.6g of vinyltrimethoxysilane-modified organic montmorillonite to 100g of epoxy resin, heat to 80°C, and stir mechanically for 1 hour to obtain a translucent colloid; then add 20g according to the method mentioned in the patent CN 1446844A Methods Dipentaerythritol phosphate melamine salt powder (average particle size 1 μm) was prepared and stirred for 0.5 h; finally, 15 g of m-phenylenediamine curing agent was added and mixed evenly. Put the mixture...

Embodiment 2

[0032] In a 250ml three-necked flask, put 10g sodium montmorillonite, 50ml acetone aqueous solution (acetone / water=1:1 volume ratio), 10g 3-glycidyl propyl trimethoxysilane, and then heat the mixture to 60 ℃, turn on the stirring, and react for 8h; then cool down to room temperature and filter. The filter cake, namely the modified montmorillonite, was washed twice with acetone to remove excess silane coupling agent on the surface. Heated to 80°C, kept at constant temperature for 12 hours, dried, and ground into a white powdery solid.

[0033] Add 10g of organomontmorillonite modified by 3-glycidylpropyltrimethoxysilane into 100g of epoxy resin, heat to 80°C, and stir mechanically for 1 hour to obtain a translucent colloid; then add 10g according to the patent CN 1446844A Prepare tripentaerythritol phosphate melamine salt powder (average particle size of 1 μm) by the method mentioned in , stir for 0.5 h; finally add 15 g m-phenylenediamine curing agent and mix well. Put the m...

Embodiment 3

[0035] In a 250 ml three-necked flask, put 10 g of sodium montmorillonite, 50 ml of aqueous methanol (methanol / water=1.5:1vol), 10 g of methacrylate propyltrimethoxysilane, and then heat the mixture to At 40°C, turn on the stirring and react for 10h; then cool down to room temperature and filter. The filter cake, namely the modified montmorillonite, was washed twice with acetone to remove excess silane coupling agent on the surface. Heated to 80°C, kept at constant temperature for 12 hours, dried, and ground into a white powdery solid.

[0036] Add 15g of organomontmorillonite modified by methacrylpropyltrimethoxysilane into 100g of epoxy resin, heat to 80°C, and stir mechanically for 1 hour to obtain a translucent colloid; then add 15g according to the patent CN 1446844A Pentaerythritol phosphate melamine salt powder (average particle size: 1 μm) was prepared by the mentioned method, stirred for 0.5 h; finally, 15 g of m-phenylenediamine curing agent was added and mixed evenly...

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Abstract

The technical problem of the invention to be solved relates to disclosing a flame retarded epoxy resin nano composite material that is prepared through the following steps: na-montmorillonite water solution of organic solvent and silane coupling agent are put and mixed in a reactor, then the mixture reacts for 2-22h at 40-100 DEG C so as to obtain organic montmorillonite. A mixture of the montmorillonite and flame retardant containing multi-pentaerythritol phosphates melamine salt are added into a mixture of epoxy resin and curing agent m-phenylenediamine for solidifying for 6-12h under 80-160 DEG C respectively, then the flame retarded epoxy resin / organic montmorillonite nano composite material is obtained. The invention adds the flame retardant and the montmorillonite composite into the epoxy resin under a mild condition by using an economic and simple method, thus good compatibility can be realized and only small amount of addition is needed; phosphorus-nitrogen is a flame retardant and has good synergistic effect with the montmorillonite, thereby keeping and promoting the thermal mechanical property of the epoxy resin, having good flame retardancy and an oxygen index of up to 28 percent, besides, the epoxy resin is also characterized by no halogen, low smoke, innocuity, no causticity and being friendly to the environment.

Description

technical field [0001] The invention relates to a flame-retardant epoxy resin material, in particular to a polypentaerythritol phosphate ester melamine salt flame-retardant epoxy resin nanocomposite material. Background technique [0002] Cured epoxy resin has high mechanical properties, electrical properties and dimensional stability, and is the most widely used matrix resin in polymer materials. In recent years, as people pay more and more attention to the worldwide environmental problems and the safety of human body, the electronics, electrical appliance and coating industries put forward higher requirements on the flame retardant properties of epoxy resins. [0003] In the formulation design of epoxy resin, the application of flame retardants can be divided into two types: additive type and reactive type. Additive flame retardants mainly include phosphate esters (triphenyl phosphate, cresyl diphenyl phosphate, trihalogenated ethyl phosphate, etc.), halogenated organic c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K9/06C08K5/521
Inventor 王幸宜李到张志慧胡静平
Owner EAST CHINA UNIV OF SCI & TECH
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