A device and a method for high throughput representation of microscopic interface performance of a single fiber and resin

Abstract

The invention provides a device and method for high throughput representation of microscopic interface performance of a single fiber and resin. The device includes a shell and a fixed bottom plate installed in the shell, a mold group, an interface performance detection device and a microscopic interface observation device are installed on the fixed bottom plate, a mold is equipped with an epoxy resin base, a plurality of the single fiber is inserted into the epoxy resin base, and the upside of the single fiber is bonded with a monofilament negative film. The mold group includes the mold, a mold positioning device, a mold moving device, and a mold fixing device. The interface performance detection device includes an automatic electric machine, a screw bar, a screw bar sliding block, a clamp, and two micro force sensors. The device have important meaning on analyzing the relationship between an interfacial layer and the structure and damage mechanics, the requirements of high throughputexperiments can be satisfied, and the period of research and development is shortened.

Description

technical field [0001] The invention relates to the field of measurement of advanced polymer-based composite materials, in particular to a high-throughput device and method for characterizing the microscopic interface properties of a single fiber and a resin. Background technique [0002] With the proposal and implementation of the American Materials Genome Project in 2011, the high-throughput materials integrated design method combined with high-throughput material experiments and material databases has been highly valued by the scientific and industrial circles. In the design and development of advanced polymer matrix composite materials, experiments and computer simulation methods are used to study the relationship between the optimal components, structure and performance of materials, and new materials that meet specific requirements are designed in combination with cloud databases. Quantitative experimental screening, thereby greatly accelerating the innovation of advan...

AI Technical Summary

Problems solved by technology

Most domestic fiber fracture experiments are used, but this method is cumbersome to operate, and the sample preparation is more complicated than the single-filament pull-out experiment. Considering the high-throughput experiment, the experimental process is convenient and effective. The single-filament pull-out experiment and the microsphere debonding experiment obtained wider application and development

At present, in China, people do not have a high degree of recognition of the measured parameters of the microscopic interface between fibers and resins. Sometimes even the test data of the same fiber and resin product companies, users and testing institutions are not consistent, resulting in many users in use. I don't know how to choose, which has affected the evaluation, application and promotion of fibers in my country

[0005] The domestic mainstream method of measuring the interface parameters of fiber and resin has relatively low efficiency and high cost. It is believed that the data error caused by it is large. Usually, one mold is used to prepare a monofilament sample, and only one monofilament and resin is measured at a time. The interface parameters between the resin and the fiber interface cannot meet the big data and high-throughput requirements advocated by the country and cannot accurately express the microscopic morphology when the resin and the fiber interface are separated while measuring the interface parameters, and analyze the failure mechanism when pulling out

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