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Process for preparing nano-particle modified epoxy resin

A technology of nanoparticle and epoxy resin, which is applied in the field of preparation technology of nanoparticle modified epoxy resin, which can solve the problems of few special and functional products, backward technology and poor quality, and achieve low cost and simple process flow , the effect of convenient operation

Inactive Publication Date: 2004-12-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the 1990s, my country's epoxy resin has developed rapidly, but its production capacity only accounts for 9% of the world's total production capacity. The gap with foreign production levels is mainly reflected in backward technology, few varieties, and poor quality. Most of the middle and low-end products, especially There are fewer special and functional products, which cannot meet the growing domestic demand
Using this process to synthesize nano-modified epoxy resin has not been reported yet

Method used

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  • Process for preparing nano-particle modified epoxy resin
  • Process for preparing nano-particle modified epoxy resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1), 48.20 grams of bisphenol A, 9 grams of nano-CaCO 3 Particles and 102 milliliters of NaOH solution with a mass concentration of 10% were added into a 250 milliliter round bottom flask, the temperature was raised and the stirring and ultrasonic generator were started, the stirring rate was controlled at 500 rpm, and the ultrasonic power was 140 watts, and dispersed at 70°C Dissolve for 30 minutes, then cool down to 47°C;

[0018] 2) Add 20 ml of epichlorohydrin at one time. After the addition, the system is heated up to 80°C for 1.5 hours, and then heated to 90°C for 45 minutes. After the reaction, inject cold water at room temperature, and stop after the resin sinks. Stir, remove the water phase, start stirring and inject 85°C hot water and heat to boiling, add cold water at room temperature after stirring for 30 minutes, stop stirring to remove the water phase, repeat this until the pH value is equal to 7, stop, and then dehydrate under normal pressure to 115°C, de...

Embodiment 2

[0021] 1), 723 grams of bisphenol A, 150 grams of nano-CaCO 3 Particles and 1500 ml of NaOH solution with a mass concentration of 10% are added to a 5000 ml reaction kettle, the temperature is raised and the stirring and ultrasonic generator are started, the stirring rate is controlled at 600 rpm, the ultrasonic power is 140 watts, and dispersed and dissolved at 70 ° C 30 minutes, then cool down to 47°C;

[0022] 2) Add 300 ml of epichlorohydrin at one time. After the addition, the system is heated to 80°C for 1.5 hours and then heated to 90°C for 45 minutes. After the reaction is completed, pour cold water at room temperature and stop after the resin sinks. Stir to remove the water phase, start stirring and inject 90°C hot water and heat to boiling, add cold water at room temperature after stirring for 30 minutes, stop stirring to remove the water phase, repeat this until the pH value is equal to 7, stop, and then dehydrate under normal pressure to 115°C, dehydration under r...

Embodiment 3

[0024] 1), 48.20 grams of bisphenol A, 8 grams of nano-TiO 2 Particles and 102 milliliters of NaOH solution with a mass concentration of 10% are added into a 250 milliliter round bottom flask, the temperature is raised and the stirring and ultrasonic generator are started, the stirring rate is controlled at 800 rpm, the ultrasonic power is 140 watts, and the dispersion is carried out at 70 ° C. Dissolve for 30 minutes, then cool down to 47°C;

[0025] 2) Add 20 ml of epichlorohydrin at one time. After the addition, the system is heated up to 80°C for 1.5 hours, and then heated to 90°C for 45 minutes. After the reaction, inject cold water at room temperature, and stop after the resin sinks. Stir to remove the water phase, start stirring and inject 90°C hot water and heat to boiling, add cold water at room temperature after stirring for 30 minutes, stop stirring to remove the water phase, repeat this until the pH value is equal to 7, stop, and then dehydrate under normal pressur...

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Abstract

The present invention is the preparation process of nano particle modified epoxy resin. After bisphenol an is dissolved completely in NaOH solution, nano TiO2, nano CaCO3 or other alkali resisting nano particle is added and well dispersed via mechanical stirring and ultrasonic vibration, and epoxy chloropropane is then added for polymerization, with the nano particle being further dispersed via the polymerization of the monomer on the surface of and between the inorganic nano particle. Transmitting electronic microscope observation shows that the nano particle with very strong self polymerization effect is well dispersed inside the epoxy resin matrix formed in polymerization, and the obtained resin is purified via one-step water washing, being simple, convenient and suitable for industrial application.

Description

Technical field [0001] The invention relates to a preparation process of nano particle modified epoxy resin. Background technique [0002] Epoxy resin is a synthetic resin widely used in various fields. It is widely used in adhesives, coatings, electrical insulation materials, structural materials and other fields due to its excellent mechanical properties, electrical properties and bonding properties. , machinery manufacturing, aerospace, shipbuilding and other industries and defense undertakings play an important role. Since the 1990s, my country's epoxy resin has developed rapidly, but its production capacity only accounts for 9% of the world's total production capacity. The gap with foreign production levels is mainly reflected in backward technology, few varieties, and poor quality. Most of the middle and low-end products, especially There are few special and functional products, which cannot meet the growing domestic demand. [0003] In the 1980s, after Roy and others...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/06C08L63/00
Inventor 王立俞豪杰石全江国华陈涛
Owner ZHEJIANG UNIV
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