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Method for preparing nano ceric oxide/epoxy resin composite material

A technology of nano-cerium dioxide and epoxy resin, which is applied in the field of preparation of nano-inorganic rare earth oxide and organic resin composite materials, achieving the effects of excellent mechanical properties, convenient operation and simple process

Active Publication Date: 2010-08-11
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compounding of nano ceria with different morphological structures into epoxy resin has not been reported so far.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Weigh 0.2g of ceria nanorods and first dry the water in an oven at 120°C, mix the ceria nanorods with 4mL of ethanol, stir for 2h, and use 100kHz ultrasonic treatment at 60°C for 2h; in addition, 17.4g E51 epoxy resin was heated under vacuum at 80°C for 5h, then added the treated ceria nanorods, stirred for 5h, and treated with 100kHz ultrasound at 60°C for 5h; the mixture was placed in vacuum and kept at 80°C for 24h, and the solvent was removed.

[0019] (2) Add 2.6g of m-phenylenediamine, remove air bubbles under vacuum, heat up at 80°C / 2h, 150°C / 2h for curing, and obtain 1.0% ceria nanorod / epoxy resin composite material.

[0020] According to the GB / T 1041-92 standard, the impact strength of the composite material is 12.4kj / m 2 , Compared with pure epoxy resin, the impact strength is increased by more than 80%.

Embodiment 2

[0022] (1) Weigh 0.2g of ceria nanosheets and first dry the water in an oven at 120°C, mix the ceria nanosheets with 4mL of acetone, stir for 3h, and use 100kHz ultrasonic treatment at 50°C for 3h; in addition, 16g of E44 The epoxy resin was heated under vacuum at 80°C for 5h, then the treated ceria nanosheets were added, stirred for 5h, and treated with 100kHz ultrasound at 50°C for 5h; the mixture was placed in vacuum and kept at 60°C for 12h to remove the solvent.

[0023] (2) Add 4 g of room temperature curing agent 593, remove air bubbles in vacuum, and cure at room temperature for 24 hours to obtain a 1.0% ceria nanosheet / epoxy resin composite material.

[0024] According to the GB / T 1041-92 standard, the impact strength of the composite material is 17.3kj / m 2 , Compared with the impact strength of pure epoxy resin, the impact strength is increased by more than 100%.

Embodiment 3

[0026] (1) Weigh 0.4g of ceria nanocubes and first dry the water in an oven at 120°C, mix the ceria nanocubes with 6mL of chloroform, stir for 5h, and use 100kHz ultrasonic treatment at 55°C for 5h; in addition, 16g of E42 epoxy resin was heated under vacuum at 80°C for 5h, then the treated ceria nanocubes were added, stirred for 5h, and treated with 100kHz ultrasound at 55°C for 5h; the mixture was placed in vacuum and kept at 65°C for 16h, and the solvent was removed.

[0027] (2) Add 4g of diaminodiphenylmethane, remove air bubbles under vacuum, heat up at 80°C / 2h, 160°C / 2h for curing, and obtain 2.0% ceria nanocube / epoxy resin composite material.

[0028] According to the GB / T 1041-92 standard, the impact strength of the composite material is 12.9kj / m 2 , Compared with pure epoxy resin, the impact strength is increased by more than 50%.

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Abstract

The invention relates to a method for preparing a nano ceric oxide / epoxy resin composite material and belongs to the technical field of preparation processes for nano inorganic rare earth oxide and organic resin composite materials. The method mainly comprises the following steps: mixing nano ceric oxide and an organic solvent and uniformly dispersing the nano ceric oxide, wherein the weight volume ratio of using amount of the nano ceric oxide to the organic solvent is 1:5-1:30 (g / ml); pre-processing a certain amount of epoxy resin by heating the epoxy resin for 4 to 8 hours at the temperature of 80 to 120 DEG C under vacuum, adding the nano ceric oxide into the heated epoxy resin, and processing the mixture by ultrasonic waves; processing the mixture for 10 to 24 hours at the temperature of 50 to 120 DEG C in a vacuum oven; and adding a certain amount of curing agent into the mixture to cure the mixture for 24 hours or raising the temperature at the temperature of 80 to 160 DEG C section by section to cure the mixture to obtain the nano ceric oxide / epoxy resin composite material. In the method, the content of the nano ceric oxide in the composite material is 0.5 to 5 weight percent; and the nano ceric oxide is uniformly dispersed, so the mechanical properties of the composite material are relatively good.

Description

technical field [0001] The invention relates to a preparation method of nano ceria / epoxy resin composite material, belonging to the technical field of preparation process of nano inorganic rare earth oxide and organic resin composite material. Background technique [0002] Epoxy resin is a thermosetting resin with excellent comprehensive properties. It is widely used in adhesives, coatings, electrical insulation materials, structural materials, etc. However, the cured epoxy resin is brittle, has low impact strength, is easy to crack, and is not resistant to fatigue, which limits its further application. [0003] Nano-epoxy resin composite material is a new type of composite material that can be composited by nano-units and epoxy resin in various ways. After the nanoparticles with strong surface effect, volume effect and synergistic effect are combined with epoxy resin, not only can play the characteristics of epoxy resin itself, but also can significantly improve its tensil...

Claims

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Application Information

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IPC IPC(8): C08L63/02C08K9/00C08K7/00C08K3/22C08K5/18C08J3/24
Inventor 张登松施利毅何小强方建慧
Owner SHANGHAI UNIV
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