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Epoxy resin composition with excellent flexibility and flame retardance, and preparation method thereof

A technology of epoxy resin and flexibility, applied in the field of epoxy resin composition and its preparation, can solve problems such as deterioration, and achieve the effects of low viscosity, high functionality and good solubility

Active Publication Date: 2013-09-18
天津凯华绝缘材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no matter whether the epoxy resin is modified by elastomer or nanotechnology, it has its inherent defects, because the toughening material used in electronic packaging materials must meet the following five aspects: (1) The toughening material must ensure that the electronic packaging material has excellent Storage stability; (2) the toughening material must ensure that the electronic packaging material has excellent electrical properties; (3) the toughening material has good compatibility with epoxy resin and can be fully dispersed in epoxy resin; (4) the toughening material is easy to process , so that the modification is easy to carry out; (5) After the toughening material is mixed with epoxy resin and cured, it must ensure that the electronic packaging material has excellent physical and chemical properties, such as glass transition temperature Tg, heat resistance, and solvent resistance.

Method used

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  • Epoxy resin composition with excellent flexibility and flame retardance, and preparation method thereof
  • Epoxy resin composition with excellent flexibility and flame retardance, and preparation method thereof
  • Epoxy resin composition with excellent flexibility and flame retardance, and preparation method thereof

Examples

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Effect test

Embodiment 1

[0038] An epoxy resin composition with excellent flexibility and flame retardant properties, the preparation method of which is as follows:

[0039] Premix epoxy resin, flexible flame retardant polyester curing agent A with star branched structure, other curing agents, curing accelerators, flame retardant synergists and inorganic fillers according to the ratio of parts by mass, and the premixed The time is 5-20min, the speed is 500-1000r / min; then melt kneading and extruding (extrusion temperature 70-150℃, extruder speed 1500-3000r / min, feeding speed 900-2400r / min), and then The epoxy resin composition can be obtained by crushing and sieving.

[0040] Wherein, the synthetic method of the flexible flame-retardant polyester curing agent A of star branch structure:

[0041] (1) Add 22.49g of ethylene glycol and 170g of neopentyl glycol to a 1L four-neck flask equipped with a heating mantle, stirrer, thermometer, distillation column and condenser, heat to about 120°C and stir to ...

Embodiment 2

[0047] A preparation method of an epoxy resin composition with excellent flexibility and flame retardant properties, as follows:

[0048] Premix epoxy resin, flexible flame retardant polyester curing agent B with star branched structure, other curing agents, curing accelerators, flame retardant synergists and inorganic fillers according to the ratio of parts by mass, and the premixed The time is 5-20min, the speed is 500-1000r / min; then melt kneading and extruding (extrusion temperature 70-150℃, extruder speed 1500-3000r / min, feeding speed 900-2400r / min), and then The epoxy resin composition can be obtained by crushing and sieving.

[0049] Wherein, the synthetic method of the flexible flame-retardant polyester curing agent B of star branch structure:

[0050] (1) Add 48.47g of ethylene glycol and 190g of neopentyl glycol to a 1L four-neck flask equipped with a heating mantle, stirrer, thermometer, distillation column and condenser, heat to about 120°C and stir to melt, then ...

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Abstract

The invention relates to an epoxy resin composition with excellent flexibility and flame retardance, and a preparation method thereof. The epoxy resin composition is powered and comprises the following ingredients in parts by mass: 20-40 parts of epoxy resin 5-25 parts of flexible flame-retardant polyester curing agent with a star-like branched structure, 0-8 parts of other curing agent, 0.05-0.3 parts of curing accelerant, 5-25 parts of flame-retardant synergist, and 30-50 parts of inorganic filler. The epoxy resin composition relating in the invention does not contain halogen and antimonous oxide, has excellent flexibility and flame retardance, not only can realize the halogen-free flame retardance of an electronic packaging material, but also can endow the electronic packaging material with excellent flexibility after being used for the field of the electronic packaging materials, so that the cold and hot impact resistance of the electronic packaging material can be improved greatly.

Description

technical field [0001] The invention belongs to the field of electronic packaging materials and relates to the flame retardancy and toughening of epoxy resin, in particular to an epoxy resin composition with excellent flexibility and flame retardancy and a preparation method thereof. Background technique [0002] Epoxy resin is one of the most widely used matrix resins in polymer-based composite materials. It is a product obtained by polycondensation reaction of compounds with epoxy groups and polyhydric hydroxyl or polyol compounds. It has excellent adhesion, resistance Chemical corrosion, electrical insulation properties, mechanical properties, and easy processing, low shrinkage, small linear expansion coefficient, and low cost are widely used in the packaging of electronic components such as varistors, ceramic capacitors, diodes, and triodes. [0003] However, since the limiting oxygen index (LOI) of epoxy resin is low, only 19.5, it is a flammable substance, so it needs ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/02C08K13/02C08K3/22C08K3/38C08K3/24C08K5/098C08K3/34C08K3/26C08G59/40C08G63/20C08G63/78
Inventor 沈纪洋周子明
Owner 天津凯华绝缘材料股份有限公司
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