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Method for researching that brominated epoxy resin on carbon fiber surface diffuses to sizing agent

A technology of brominated epoxy resin and carbon fiber, which is applied in the field of modification of polymer-based composite materials, can solve problems such as the difficulty of resin diffusion research, and achieve the effect of convenient analysis and wide application range

Active Publication Date: 2011-01-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is in order to solve the problem that existing method is difficult to carry out to the research that resin diffuses to sizing agent layer; And the research method that the brominated epoxy resin of carbon fiber surface diffuses to sizing agent is provided; The present invention is to carbon fiber reinforced resin The diffusion process and the main influencing factors in the diffusion process were studied

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  • Method for researching that brominated epoxy resin on carbon fiber surface diffuses to sizing agent

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specific Embodiment approach 1

[0014] Specific embodiment one: in this embodiment, the brominated epoxy resin on the carbon fiber surface diffuses to the research method of the sizing agent is carried out according to the following steps: one, the glass is dried after cleaning; two, the mass concentration is 1% ~2% carbon fiber sizing agent is coated on the glass surface, and then dried at 105~120℃; 4. Repeat the operation of step 3 for 6 to 9 times to obtain a sizing agent layer on the glass surface; 5. Sprinkle brominated epoxy resin evenly on the surface of the sizing agent layer. Heating and reacting for 5-60 minutes at the glass transition temperature of the resin at ±5°C, cooling to room temperature, and then cutting, and sequentially using a scanning electron microscope and an X-ray energy spectrometer to linearly scan the bromine element on the cutting cross-section to obtain a scan The electron microscope image is the energy spectrum of the background; that is, the extent to which the brominated ep...

specific Embodiment approach 2

[0016] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the mass concentration of the carbon fiber sizing agent solution in Step 2 is 1.2%-1.8%. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0017] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the mass concentration of the carbon fiber sizing agent solution in Step 2 is 1.5%. Other steps and parameters are the same as in the first embodiment.

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Abstract

A method for researching that brominated epoxy resin on carbon fiber surface diffuses to sizing agent belongs to the modification field of polymer-matrix composite materials. The invention solves the problem that the existing method difficultly proceeds with the research on the diffusion of resin to the sizing agent. The method comprises the following steps of: 1. cleaning and drying glass; 2. coating and drying the sizing agent solution of carbon fiber on the surface of glass; 3. coating and drying for a second time; 4. repeating the operation of step 3; and 5. uniformly spreading the brominated epoxy resin on the surface of the sizing agent layer, heating and cooling to room temperature, cutting along longitudinal direction with the section sequentially passing through a scanning electron microscope and an X ray energy spectrometer to conduct linear scan on the bromine element in the sizing agent layer, thus obtaining an energy spectrum graph. The invention adopts a model compound tomacroscopically illustrate the diffusion process that resin diffuses to the sizing agent at different temperature and time. The method can help people change abstract cognition to specific cognitionand has the advantages of wide application range and more convenient and quicker, more accurate and more standardized analysis to interfaces.

Description

technical field [0001] The invention belongs to the field of modification of polymer-based composite materials, and in particular relates to a research method for the diffusion of resin on the fiber surface to a sizing agent. Background technique [0002] Theoretical research on the interface of composite materials is an important part of the field of interface engineering research. Among the two phases that make up composite materials, the interaction mechanism between the two phases has always been a concern of people. At the same time, in the preparation process of composite materials, in order to prepare macroscopic composite materials with certain properties, the corresponding interface microstructure and properties must be obtained through effective control of macroscopic factors (reinforcement properties, matrix properties, and composite technology, etc.), and then realize composite materials. Material-specific macroscopic properties. The effective control of macros...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/00G01N23/225G01N23/227
Inventor 黄玉东徐丽薇刘丽姜再兴张依帆
Owner HARBIN INST OF TECH