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Flame retardant composite of epoxy resin and preparation method thereof

A technology of flame retardant composition and epoxy resin, which is applied in the field of flame retardants, can solve the problems of poor compatibility between flame retardants and resins in the mechanical properties of flame retardant compositions, and achieve improved mechanical properties, simple steps, and increased compatibility sexual effect

Inactive Publication Date: 2013-01-16
JIANGHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that it is necessary to add a synergist to improve the flame retardant effect in the flame retardant composition, resulting in poor compatibility between the mechanical properties of the flame retardant composition and the flame retardant and the resin, the embodiment of the present invention provides a Epoxy resin flame retardant composition and preparation method thereof

Method used

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  • Flame retardant composite of epoxy resin and preparation method thereof
  • Flame retardant composite of epoxy resin and preparation method thereof
  • Flame retardant composite of epoxy resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Methyl (N-phenyl-3-propionyl) phosphinic acid is ground to 5-10 μm with a high-speed ball mill, and bisphenol A epoxy resin (trade name CYD-127, epoxy equivalent g / eq180-190) 100.0 g. Add 15.0g of methyl (1-propionanilide) phosphinic acid into 100g of CYD-127, completely melt the flame retardant at the melting point of 145°C and stir evenly. Then, 26g of 4,4-diaminodiphenylsulfone was also mixed into the epoxy resin, stirred at high speed for 3 minutes, and the preparation of composition 1 was completed.

[0036] The composition 1 was poured into a mold and shaped at 160°C / 3 hours to obtain a flame-retardant composite material. The composite material has good transparency, a glass transition temperature of 143°C, an oxygen index of 29.1, and a vertical combustion rating of UL94V-0.

Embodiment 2

[0038] Grind methyl (N-phenyl-3-propionyl)phosphinate to 5-10 μm with a high-speed ball mill, and bisphenol A epoxy resin (trade name CYD-128, epoxy equivalent g / eq184- 194) Take 100.0g. Add 20.0g of methyl (N-phenyl-3-propionyl)phosphinate into 100g of CYD-128, completely melt the flame retardant at the melting point of 145°C and stir evenly. Then cool to 80° C., 23.4 g of 4,4-diaminodiphenylmethane as a curing agent was added to the epoxy resin system, stirred at high speed for 3 minutes, and the preparation of composition 2 was completed.

[0039] The composition 2 was poured into a mold and shaped at 150°C / 3 hours to obtain a flame-retardant composite material. The composite material has good transparency, a glass transition temperature of 146°C, an oxygen index of 28.4, and a vertical combustion rating of UL94V-0.

Embodiment 3

[0041] Grind methyl (N-phenyl-3-propionyl) aluminum phosphinate to 5-10 μm with a high-speed ball mill, and bisphenol A epoxy resin (trade name CYD-128, epoxy equivalent g / eq184-194 ) take 100.0g. Add 15.0g of aluminum methyl (N-phenyl-3-propionyl)phosphinate to 100g of CYD-128, completely melt the flame retardant at the melting point of 145°C and stir evenly. Then, 10 g of dicyandiamide was selected as the curing agent, and 1.2 g of 2-methylimidazole was selected as the curing accelerator. After melting the curing agent and 2-methylimidazole, they were also added to the epoxy resin system and stirred at high speed for 3 minutes. Composition 3 Preparation is complete.

[0042] The composition 3 was poured into a mold and formed by a process of 140°C / 3 hours to obtain a flame-retardant composite material. The composite material has good transparency, the oxygen index reaches 30.4, the glass transition temperature is 178°C, and the vertical combustion rating reaches UL94V-0. ...

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Abstract

The invention discloses flame retardant composite of epoxy resin and the preparation method thereof, and belongs to field of flame retardant. The composite comprises epoxy resin, curing agent and fire retardant, wherein the fire retardant at least comprises single amide group functionalized dialkyl group phosphinic acid, single amide group functionalized dialkyl group phosphinic acid ester or single amide group functionalized dialkyl group phosphinic acid metal salt. By accounting in 100 parts of weight, the fire retardant and the curing agent account for 10 to 50 parts of weight and 10 to 30 parts of weight respectively. The fire retardant in the composite provided by the invention is a new-type and efficient halogen-free fire retardant, which can be used for realizing multi-element cooperative flame retardant, such as the cooperation of phosphorus, nitrogen and metal elements, and the flame retardant effect is excellent. The preparation method of the flame retardant composite of epoxy resin provided by the invention is simple.

Description

technical field [0001] The invention relates to the field of flame retardants, in particular to an epoxy resin flame retardant composition and a preparation method thereof. Background technique [0002] There are many kinds of phosphorus-based flame retardants, which can be divided into additive type and reactive type according to the combination relationship between flame retardants and matrix resins. Among them, additive-type phosphorus-based flame retardants have the advantages of convenient processing and low cost, but often require A higher flame retardant addition (30-50%) can achieve good flame retardant effect, and a higher flame retardant addition will reduce the mechanical properties, electrical properties, water absorption properties and insulation properties of the material. In addition, during the use of phosphorus-based flame retardants, in order to improve the flame-retardant effect and reduce the amount of use, flame-retardant synergists can also be added. Th...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L63/02C08L63/04C08K5/5313C08K5/5353
Inventor 刘继延刘学清孙山陈佳蔡少君
Owner JIANGHAN UNIVERSITY
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