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Epoxidation silicon oil modified three kinds of composite material of epoxy resin

A technology for epoxidizing silicone oil and epoxy resin, which is applied in the field of epoxidizing silicone oil modified epoxy resin composite materials, can solve the problems of reducing material toughness, reducing mechanical strength and heat resistance, etc., and achieves the effect of high impact strength

Inactive Publication Date: 2008-02-27
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But despite this, judging from the current literature reports on silicone-modified epoxy resins at home and abroad, either by introducing rigid segments to improve heat resistance, or by introducing soft segments to achieve toughening effects, but often Toughening reduces the mechanical strength and heat resistance, or improves heat resistance while reducing the toughness of the material, but not both at the same time

Method used

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  • Epoxidation silicon oil modified three kinds of composite material of epoxy resin
  • Epoxidation silicon oil modified three kinds of composite material of epoxy resin

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Take 100g of E-51 epoxy resin with an epoxy value of 0.51mol / 100g and 0.1g of epoxy silicone oil with an epoxy value of 0.16mol / 100g, put them in a beaker, stir, then add p, p'-diaminodi 25.26g of phenylmethane, then heated to dissolve p,p'-diaminodiphenylmethane, stirred, degassed, poured into the mold, and cured according to the curing process of 80°C / 3h+150°C / 2h+175°C / 1h to obtain Epoxy silicone oil modified epoxy resin composite material, the measured tensile strength is 41.31MPa, the elongation at break is 5.42%, and the impact strength is 10.24KJ m -2 , The glass transition temperature is 158°C.

Embodiment 2

[0027] Take 100g of F-51 epoxy resin with an epoxy value of 0.51mol / 100g and 80g of epoxy silicone oil with an epoxy value of 0.01mol / 100g and put them in a beaker, heat and stir, then add diaminodiphenyl sulfone 29.78 g, then heat to dissolve the diaminodiphenyl sulfone, stir again, defoam, pour the mold, and cure according to the curing process of 80°C / 1h+160°C / 2h+180°C / 2h to obtain epoxy silicone oil modified epoxy Resin composites. The measured tensile strength is 43.47MPa, the elongation at break is 6.71%, and the impact strength is 11.62KJ m -2 , The glass transition temperature is 163°C.

Embodiment 3

[0029]After dissolving 100 g of epoxidized silicone oil with an epoxy value of 0.16 mol / 100 g in dimethylformamide, place it in a reactor with 32 g of p-, p-diaminodiphenylmethane, while heating and stirring in an oil bath , and then reflux at 140°C for 3 hours. After the reaction, the reaction mixture was distilled under reduced pressure to remove dimethylformamide to obtain a modified epoxy silicone oil. Stir 100g of E-44 epoxy resin in a beaker evenly, then add 5g of dicyandiamide, and cure according to the curing process of 80℃ / 1h+160℃ / 1h+180℃ / 0.5h to obtain epoxy silicone oil modified epoxy resin Resin composites. The measured tensile strength is 47.54MPa, the elongation at break is 11.38%, and the impact strength is 14.45KJ m -2 , The glass transition temperature is 171°C.

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Abstract

This invention involves three processes for preparing epoxy resin composites modified with epoxy silicone oil, characteristic of mixing epoxy silicone oil with epoxy resin followed by solidification with the solidified agent to obtain epoxy resin composites modified with epoxy silicone oil. The first process is mixing epoxy silicone oil with epoxy resin directly; the second process is modifying epoxy silicone oil with the solidified agent and then mixing with epoxy resin; and the third is mixing coupled epoxy silicone oil with epoxy resin, thus obtaining three new epoxy resin composites modified with epoxy silicone oil. Compared with unmodified epoxy resin, these three epoxy resin composites exhibit higher impact strength, tensile strength, rupture extension rate and vitrification temperature, and thus can be used as high-performance materials, e.g., paints, structural adhesives and electronic packaging materials.

Description

technical field [0001] The invention relates to three kinds of modified epoxy resin composite materials, in particular to three kinds of epoxy silicone oil modified epoxy resin composite materials. Background technique [0002] Epoxy resin has the advantages of excellent mechanical properties, mechanical properties, electrical properties, chemical properties, adhesive properties, and easy molding processing, and is widely used in coatings, adhesives, electrical and electronic insulation, and the matrix of advanced composite materials. In recent years, its application has expanded to structural adhesive materials, semiconductor packaging materials, fiber reinforced materials, laminates, copper foil, integrated circuits and other electronic and electrical packaging materials, which requires materials to have higher performance, such as high toughness and low internal stress. , heat resistance, water resistance, chemical resistance, etc. However, due to the three-dimensional n...

Claims

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Application Information

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IPC IPC(8): C08L63/02C08L63/04
Inventor 刘伟区姚海松
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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