Siloxane-modified phenolic resin for hot melt preimpregnation technology and preparation method of siloxane-modified phenolic resin for hot melt preimpregnation technology

A technology of siloxane modification and phenolic resin, which is applied in the field of siloxane-modified phenolic resin for hot-melt prepreg process and its preparation, can solve the problems of not taking into account the improvement of the manufacturability of phenolic resin-based composite materials, and achieve Excellent thermal properties, high heat resistance, and low volatile matter content

Active Publication Date: 2016-06-08
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The improvement of toughening or heat resistance based on phenolic resin does not take into account the improvement of the manufacturability of phenolic resin-based composite materials

Method used

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  • Siloxane-modified phenolic resin for hot melt preimpregnation technology and preparation method of siloxane-modified phenolic resin for hot melt preimpregnation technology
  • Siloxane-modified phenolic resin for hot melt preimpregnation technology and preparation method of siloxane-modified phenolic resin for hot melt preimpregnation technology
  • Siloxane-modified phenolic resin for hot melt preimpregnation technology and preparation method of siloxane-modified phenolic resin for hot melt preimpregnation technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of siloxane-modified phenolic resin for hot-melt prepreg process of the present invention comprises the following steps:

[0030] (1) In terms of parts by mass, take 100 parts of barium phenolic resin in a three-neck reaction flask, add 5 parts of polyester polyurethane while stirring at room temperature, and stir to obtain a mixture, which is stored in refrigeration for later use.

[0031] (2) Add 10 parts of vinyltrimethoxysilane, 1 part of water, 2 parts of ethanol, and 1 part of hydrochloric acid into a beaker in turn, stir magnetically at room temperature, and stir evenly to obtain a siloxane intermediate for use.

[0032](3) After taking out the mixture and adding it to the three-necked reaction flask, stir at a constant speed, take the prepared siloxane intermediate and add it to the mixture drop by drop at 35°C, with an average of 2 seconds / drop. After the drop is completed, the reaction system Stir and react under vacuum for 50 minutes at...

Embodiment 2

[0034] The preparation method of siloxane-modified phenolic resin for hot-melt prepreg technique of the present invention comprises the following steps:

[0035] (1) In terms of parts by mass, take 90 parts of molybdenum phenolic resin in a three-necked reaction flask, add 3 parts of polyester polyurethane while stirring at room temperature, and stir evenly to obtain a mixture, which is refrigerated and placed for use.

[0036] (2) Take 8 parts of γ-glycidyl etheroxypropyltrimethoxysilane, 1 part of water, 1 part of ethanol, and 1 part of phosphoric acid into the beaker in turn, stir magnetically at room temperature, and obtain the siloxane intermediate after stirring evenly. stand-by.

[0037] (3) Take out the mixture and add it to the three-necked reaction flask, stir at a constant speed, take the prepared siloxane intermediate and add it to the mixture drop by drop at 40°C, with an average of 2 seconds / drop. After the drop is completed, the reaction system Stir and react i...

Embodiment 3

[0039] The preparation method of siloxane-modified phenolic resin for hot-melt prepreg process of the present invention comprises the following steps:

[0040] (1) According to the number of parts by mass, take 90 parts of molybdenum phenolic resin in a three-necked reaction flask, add 2 parts of amine-terminated liquid nitrile rubber and 1 part of polyethersulfone while stirring at room temperature, and stir evenly to obtain the mixture. Set aside.

[0041] (2) Add 8 parts of vinyltrimethoxysilane, 1 part of water, 1 part of ethanol, and 1 part of acetic acid into a beaker in turn, stir magnetically at room temperature, and stir evenly to obtain a siloxane intermediate for use.

[0042] (3) Take out the mixture and add it to the three-necked reaction flask, stir at a constant speed, take the prepared siloxane intermediate and add it to the mixture drop by drop at 40°C, with an average of 2 seconds / drop. After the drop is completed, the reaction system Stir and react under va...

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Abstract

The invention discloses a siloxane-modified phenolic resin for a hot melt preimpregnation technology and a preparation method of the siloxane-modified phenolic resin for the hot melt preimpregnation technology. The siloxane-modified phenolic resin for the hot melt preimpregnation technology is prepared from, by mass, 50-100 parts of phenolic resin, 1-10 parts of toughening agent and 1-20 parts of siloxane. The siloxane-modified phenolic resin for the hot melt preimpregnation technology has the advantages that release moisture is little when the resin is cured, micropore forming can be reduced, flexibility, impact resistance and interlaminar shear strength of phenolic resin cured materials are improved effectively, and the siloxane-modified phenolic resin is higher than traditional RF (phenolic resin) in heat resistance.

Description

technical field [0001] The invention relates to a resin matrix and a preparation method, in particular to a siloxane-modified phenolic resin used in a hot-melt prepreg process and a preparation method thereof. Background technique [0002] The hot melt prepreg process is a new preparation process proposed for prepreg. The hot-melt prepreg process does not use solvents in the production process, and impregnates the fibers with molten resin to ensure that the resin is evenly distributed in the fibers. The hot-melt prepreg process can not only produce prepregs with low volatile content, controllable resin content and good batch stability, but also does not use solvents, which is environmentally friendly and saves resources and reduces costs. Therefore, developing a resin matrix suitable for hot melt prepreg technology is a hot spot in the field of hot melt prepreg technology. [0003] At present, the resin matrices used in the industrial production of the hot melt prepreg pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/14C08L75/06C08L15/00C08L81/06C08L75/08C08L71/12C08L79/08C08L75/14C08L71/10C08G8/28
CPCC08G8/28C08L61/14C08L2205/035C08L2205/025C08L2205/03C08L2201/08C08L75/06C08L15/00C08L81/06C08L75/08C08L71/12
Inventor 刘育红井新利姜雪吕游
Owner XI AN JIAOTONG UNIV
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