Method for producing carbon fiber sample for Raman spectrum test

Abstract

The present invention discloses a method of producing a carbon fiber sample for Raman spectrum test. The method is characterized by comprising the steps of: applying glue onto a silicon wafer, winding a bundle of carbon fiber yarn onto the positions coated with glue on the silicon wafer, so as to form a row of carbon fiber yarns; applying glue on the carbon fiber yarns, and gluing an accompany piece respectively on the opposite sides of the region wound with carbon fiber yarns; placing the silicon wafer in a mold, clamping, heating, curing, and cooling to room temperature; cutting the cured sample along a direction perpendicular to the direction of the carbon fiber yarn bundle by a diamond wire cutting machine to obtain a cross-sectional sample; or cutting the cured sample with a diamond wire cutting machine along the direction parallel to the carbon fiber yarn bundle to obtain a profile sample; and grinding the sample to prepare cross-sectional carbon fiber sample or profile carbon fiber sample. The present invention provides a rapid method for preparation of carbon fiber sample, and the obtained carbon fiber sample is smooth, flat, easy to apply to study of a skin-core structure of carbon fiber in Raman spectrum test, so as to a comprehensively understand the information structure of carbon fibers.

Description

technical field [0001] The invention belongs to the preparation of Raman spectrum test samples, and relates to a preparation method of a carbon fiber sample used for Raman spectrum test. It is especially suitable for the preparation of carbon fiber sections and / or section samples for Raman spectroscopy testing. Background technique [0002] Carbon fiber is an inorganic polymer fiber that has both the structural characteristics of carbon materials and the morphological characteristics of fibers. It has a series of excellent properties such as high specific strength, high specific modulus, high temperature resistance, corrosion resistance and self-lubrication, and is the most important reinforcing material for advanced composite materials. Therefore, it is widely used in military fields such as aerospace and aviation, and civilian fields such as sports, machinery, and transportation, and has broad application prospects. [0003] The performance of carbon fiber is mainly dete...

AI Technical Summary

Problems solved by technology

Due to the high viscosity of the epoxy resin, it is difficult to vertically fix the carbon fiber in the epoxy resin, and the epoxy resin will cover the carbon fiber cross section during the grinding process, so it is impossible to obtain a complete carbon fiber cross section sample, and the success rate is low

At present, there is no effective solution to these problems, which largely depends on experience, resulting in large experimental errors.

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