On-line fast detection method for impregnation degree of resin in fiber cloth

Abstract

The invention discloses an on-line quick detection method used for detecting the dipping degree of resin into fiber cloth relates to the detection method for detecting the dipping degree of resin into fiber cloth. The invention solves the problems that the detection to the dipping degree of resin into fiber cloth costs both time and labor during the processing of pre-dipping materials and the quick detection cannot be realized. The method is as follows: 1. a plurality of pre-dipping material samples with the dipping degree of insufficient dipping, excellent dipping and over dipping are selected respectively; 2. the dipping degree of each pre-dipping material sample is calculated; 3. a near-infrared diffuse reflection spectrometer is adopted to collect the same zone on each pre-dipping material sample to obtain a plurality of spectrum information of each pre-dipping material sample; 4. the pre-dipping material sample database is established; 5. correction sample collections are established; 6. the quantitative analysis model for the resin against the fiber cloth is established and the model is optimized to get the optimal correction model; and 7. the optimal correction model is adopted to predict the dipping degree of the resin into the fiber cloth. The invention is suitable for the detection to the dipping degree of different reinforced fibers and resins.

Description

technical field

[0001] The invention relates to a method for detecting the impregnation degree of resin in fiber cloth. Background technique

[0002] Prepreg, also known as molding compound, is a composition of resin matrix and reinforcement made by impregnating continuous fibers with resin under strictly controlled conditions, and is an intermediate material for manufacturing composite materials. The performance of the composite depends largely on the performance of the prepreg. Therefore, the study of prepreg is of great significance to the application and development of composite materials.

[0003] The impregnation degree of resin in fiber cloth during prepreg processing is an important evaluation index of prepreg. If the impregnation is uneven, the resin distribution in the product will be uneven during the subsequent preparation of the finished product, which cannot meet the needs of production; therefore, it is very important to detect the degree of impregnation of ...

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