Toughening-antiflaming type epoxy resin and preparation method thereof

An epoxy resin and flame-retardant technology, applied in the field of new functional polymer materials and their preparation, can solve the problem that a single performance cannot effectively improve the use value of materials, and achieve non-toxic by-products, heat release rate and smoke density decrease , environmental and human safety effects

Active Publication Date: 2015-06-17
四川天策聚材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Researchers have devoted a lot of effort to the flame retardant modification and toughening modification of epoxy resin, but the improvement of a single performance cannot effectively improve the use value of the material

Method used

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  • Toughening-antiflaming type epoxy resin and preparation method thereof
  • Toughening-antiflaming type epoxy resin and preparation method thereof
  • Toughening-antiflaming type epoxy resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Stir and mix 100 parts of epoxy resin monomer 618 (E-51) and 5 parts of core-shell microspheres at 30°C, wherein the particle size distribution of core-shell microspheres is 0.1-0.5 μm, and the thickness of the shell and core layers The ratio is 1:10, the shell layer is composed of methyl methacrylate and divinylbenzene cross-linked polymer, and the ammonium polyphosphate in the core layer: melamine: melamine resin = 10:5:5. Add 15 parts of m-phenylenediamine to the mixture of epoxy monomer and core-shell microspheres, stir and mix evenly at 30°C, pour into a preheated specific mold, and vacuum for 30 minutes to remove air bubbles in the mixture. After defoaming, it was cured at 60°C for 2 hours and at 150°C for 2 hours. After cooling, it was released from the mold to obtain a toughened-flame-retardant epoxy resin material.

Embodiment 2

[0038] Stir and mix 100 parts of epoxy resin monomer 6101 (E-44) and 10 parts of core-shell microspheres at 30°C. The particle size distribution of the core-shell microspheres is about 0.5-1 μm, and the shell layer is made of styrene It is composed of divinylbenzene cross-linked polymer, ammonium polyphosphate in the core layer: melamine: melamine resin = 10:0:0. Add 14 parts of polyethylene polyamine to the mixture of epoxy monomer and core-shell microspheres, stir and mix evenly at 30°C, pour into a preheated specific mold, and vacuum for 30 minutes to remove air bubbles in the mixture. After defoaming, it was cured at 60°C for 2 hours, 120°C for 1 hour, and 150°C for 1 hour. After cooling, it was demolded to obtain a toughened-flame-retardant epoxy resin material.

Embodiment 3

[0040] Stir and mix 100 parts of epoxy resin monomer 618 (E-51) and 25 parts of core-shell microspheres at 60°C. Among them, the particle size distribution of core-shell microspheres is 2-2.5 μm, and the thickness of the shell and core layers The ratio is 2:10, the shell layer is composed of acrylonitrile and divinylbenzene cross-linked polymer, and the ammonium polyphosphate in the core layer: melamine: melamine resin = 10:1:5. Add 22 parts of diethylmethyldiamine to the mixture of epoxy monomer and core-shell microspheres, stir and mix evenly at 60°C, pour it into a preheated special mold, and vacuum for 30 minutes to remove the mixture medium air bubbles. After defoaming, it was cured at 120°C for 4 hours and at 180°C for 4 hours, and then demoulded after cooling to obtain a toughened-flame-retardant epoxy resin material.

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Abstract

The invention discloses a toughening-antiflaming type epoxy resin and a preparation method thereof. The toughening-antiflaming type epoxy resin is prepared by curing the following raw materials in parts by weight at the temperature of 60-180 DEG C: 100 parts of epoxy monomers, 10-30 parts of curing agents and 5-25 parts of nuclear shell microballoons. The nuclear shell microsphere takes phosphorus-nitrogen type high-efficiency halogen-free fire retardants as a nuclear layer and takes the polymer crosslinked network structure as a shell layer, the grain size of the nuclear shell microsphere is 0.1-3mu m, the thickness ratio of the shell layer to the nuclear layer is (1:10)-(5:10), and the nuclear shell microsphere has toughening and antiflaming effects on epoxy resin. According to the nuclear shell microsphere toughening-antiflaming type epoxy resin, the multiple performances of the material can be synchronously improved, and the defect of the improving method of the single performance of the material can be effectively overcome. The toughening-antiflaming type epoxy resin material can be applicable to the occasions which are higher in toughness performance requirement and antiflaming performance requirement.

Description

[0001] This application claims the priority of the invention patent application with the application number 201210313644.7, the application date is August 30, 2012, and the invention title is "toughened-flame retardant epoxy resin and its preparation method". technical field [0002] The invention relates to a toughening-flame-retardant epoxy resin and a preparation method thereof, belonging to the field of new functional polymer materials and preparation thereof. Background technique [0003] Epoxy resin is a kind of polymer material with a cross-linked network structure. It has high rigidity, high hardness, excellent dielectric properties, bonding properties and chemical stability. It is used in the form of adhesives, coatings, potting materials and composite materials. Widely used in machinery, electronics, aerospace, marine and wind power and other fields. However, epoxy resin has two major defects. First, it is extremely flammable. The limit index (LOI) of epoxy resin i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/20C08G59/22C08G59/32C08G59/40C08G59/50C08K9/10C08K3/32C08K5/3492
Inventor 李云涛赵春霞邢云亮
Owner 四川天策聚材科技有限公司
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