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 segment

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
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

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

Example Embodiment

[0026] Example 2

[0027] Take 100g of F-51 epoxy resin with epoxy value of 0.51mol / 100g and 80g of epoxidized silicone oil with epoxy value of 0.01mol / 100g in a beaker, heat and stir, and then add diaminodiphenyl sulfone 29.78 g, then heat to dissolve the diaminodiphenyl sulfone, then stir, degas, reverse the mold, and cure according to the curing process of 80°C / 1h+160°C / 2h+180°C / 2h to obtain an epoxy resin modified epoxy Resin composite material. 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℃.

Example Embodiment

[0028] Example 3

[0029]Take 100g of epoxidized silicone oil with an epoxy value of 0.16mol / 100g and dissolve it in dimethylformamide, and place it in the reactor together with 32g of p-diaminodiphenylmethane, while the oil bath is heated and stirred , Then reflux and react at 140°C for 3 hours. After the reaction is completed, the reaction mixture is distilled under reduced pressure to distill off the dimethylformamide to obtain modified epoxidized silicone oil. Take 100g and the epoxy value of 0.44mol / 100g 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 epoxidized silicone oil modified epoxy Resin composite material. 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℃.

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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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