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Fiber reinforced phenolic foam composite material and preparation method thereof

A phenolic foam and composite material technology, applied in the field of composite materials, can solve the problems of uneven distribution of fibers, uneven distribution of strength, unsatisfactory, etc., and achieve the effects of high strength, widening application fields, and not easy to drop powder.

Active Publication Date: 2015-04-08
镇江三阳装饰材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the length of chopped fibers is limited, and it is easy to cause uneven distribution of fibers during the mixing process, resulting in the limitation of the strength of the obtained chopped fiber reinforced phenolic resin foam material, and the uneven distribution of strength
[0004] With the advancement of science and technology, and the improvement of material strength and flame-retardant grade requirements in aviation and other industrial fields, the application of a series of phenolic foam materials can no longer meet the existing needs.

Method used

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  • Fiber reinforced phenolic foam composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] At room temperature, add 5 parts of F-36 foaming agent, 0.5 part of Tween-80, 0.5 part of DC-190 modifier, and 50 parts of alcohol solvent into 100 parts of phenolic resin, stir at high speed for 5 min, and the stirring speed is 900 r / min, then add 18 parts of curing agent (the curing agent is prepared from toluene-4-sulfonic acid and water in a weight ratio of 2:3), and continue to stir for 1 min to obtain prepreg 1; use the prepared above Prepreg 1 is used as the dipping solution, and 90 parts of fiber mats are impregnated with a dipping machine to obtain prepreg 2; the dipped fiber mat prepreg 2 is put into an oven and heated at a temperature of 40 ℃ The phenolic resin was pre-cured at the same time, and part of the volatile components and excess solvent were removed at the same time to obtain the prepreg III; the obtained prepreg III was put into the molding machine, and kept under the pressure of 0.2 MPa and the temperature of 70 ℃ for 5 minutes. The entire foaming...

Embodiment 2

[0032] At room temperature, 20 parts of 461DU20 foaming agent, 3 parts of Tween-60, 3 parts of DC-193 modifier, and 0 parts of solvent were added to 100 parts of phenolic resin, and stirred at high speed for 10 min at a speed of 1500 r / min, then add 18 parts of curing agent (the curing agent is prepared by toluene-4-sulfonic acid and water in a weight ratio of 2:3), and continue to stir for 2 min to obtain prepreg 1; use prepared prepreg 1 As the dipping solution, use a dipping machine to impregnate 50 parts of the fiber mat to obtain the prepreg II; put the impregnated fiber mat prepreg II into an oven, and process the phenolic resin at a temperature of 80 °C. The pre-curing of the prepreg, while removing part of the volatile components and excess solvent, to obtain the prepreg III; put the obtained prepreg III into the molding machine, and keep it under the pressure of 1.5 MPa and the temperature of 110 ℃ for 30 minutes to complete the whole process. Foaming process, namely...

Embodiment 3

[0034] At room temperature, add 10 parts of F-50D foaming agent, 2 parts of KH-550 and 2 parts of CGY-1 modifier, 200 parts of water solvent into 100 parts of phenolic resin, stir at high speed for 6 minutes, and the stirring speed is 1000 r / min, then add 5 parts of curing agent (the curing agent is prepared by toluene-4-sulfonic acid and water in a weight ratio of 2:3), and continue to stir for 2 minutes to obtain prepreg 1; use the prepared prepreg Material 1 is used as the dipping solution, and 10 parts of the fiber mat are dipped with a dipping machine to obtain the prepreg 2; the dipped fiber mat prepreg 2 is put into an oven, and the prepreg 2 is prepared at a temperature of 80 ℃. Pre-cure the phenolic resin, and remove part of the volatile components and excess solvent at the same time to obtain the prepreg III; put the obtained prepreg III into the molding machine, and keep it under the pressure of 1.0 MPa and the temperature of 120 ℃ for 15 minutes. After completing t...

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Abstract

The invention discloses a fiber reinforced phenolic foam composite material. The fiber reinforced phenolic foam composite material is prepared from the following components in parts by weight: 10-100 parts of fiber felts, 100 parts of phenolic resin, 5-20 parts of a foaming agent, 1-6 parts of a modifier, 5-18 parts of a curing agent and 0-200 parts of a solvent. Interaction of a microsphere foaming agent, fiber felts and the modifier is adopted, so that the phenolic resin foam composite material obtained by the preparation method disclosed by the invention is not only relatively excellent in fireproof performance, but also controllable in hole diameter of foam holes; the obtained composite material is high in strength, not prone to drop powder and capable of being bent into various shapes. Domestic requirements such as fire resistance, water resistance and heat resistance can be completely satisfied, the material strength is greatly improved, and the application field of the fiber reinforced phenolic foam composite material is expanded.

Description

technical field [0001] The invention relates to a composite material, in particular to a fiber-reinforced phenolic foam composite material and a preparation method thereof. Background technique [0002] Existing PU and XPS foam materials are mostly used as the sandwich layer of thermal insulation composite boards, but their flame retardant grades are not ideal. Although the phenolic resin foaming material has excellent fire resistance, the flame retardant grade reaches the flame retardant B1 level, and has low smoke generation, good thermal insulation performance, excellent corrosion resistance and aging resistance, but the phenolic resin foaming material is easy to collapse, and the material is brittle. It is easy to lose powder, so its application is limited. [0003] In the prior art, chopped fibers are often used to reinforce phenolic foam materials, that is, chopped fibers are mixed with phenolic resin for foam molding. However, the length of the chopped fibers is li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08K5/42C08J9/04C08J5/04
Inventor 张竞王洪亮汤继俊闫东广
Owner 镇江三阳装饰材料有限公司
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