Method for testing interfacial bonding strength of ceramic fiber-reinforced resin matrix composite material

A technology of interfacial bonding strength and reinforced resin base, which is applied in the field of ceramic fibers, can solve the problems of difficult test sample preparation and low test efficiency, and achieve the effects of improving the success rate of sample preparation, efficient measurement, and avoiding damage

Active Publication Date: 2014-10-29
XIAMEN UNIV
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  • Abstract
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for testing the interfacial bonding strength of ceramic fiber reinforced resin ma...

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  • Method for testing interfacial bonding strength of ceramic fiber-reinforced resin matrix composite material
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  • Method for testing interfacial bonding strength of ceramic fiber-reinforced resin matrix composite material

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings. The embodiments are only to further illustrate the content of the invention, and are not intended to limit the content of the invention.

[0033] The following is an example of testing the fiber-matrix interface bonding strength of silicon carbide fiber-reinforced epoxy resin-based composite materials.

[0034] Raw material: SiC fiber: 14μm in diameter, 30mm in length, 10 pieces;

[0035] Carrier for discharging fibers: rectangular hollow cardboard;

[0036] Quick-drying glue: 502 glue;

[0037]Embedding resin system: E40 epoxy resin 100 parts, ethylenediamine 14 parts;

[0038] Mold: aluminum cuboid hollow groove.

[0039] Sample preparation process:

[0040] Use 502 glue to bond 10 silicon carbide single fibers in parallel on a hollow cardboard frame printed with scale lines. The outer frame size is 50mm×35mm, the inner frame size is 30mm×30mm,...

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Abstract

The invention discloses a method for testing the interfacial bonding strength of a ceramic fiber-reinforced resin matrix composite material and relates to ceramic fibers. The method comprises the following steps: bonding the ceramic fibers to a hard paper frame by virtue of an instant adhesive, for straightening and solidifying the ceramic fibers; preparing an embedding mold, putting the ceramic fibers and the hard paper frame into the embedding mold, and introducing resin into the embedding mold; after the resin is solidified, cutting an embedded end together with the embedding mold so as to obtain a sample, and polishing; when the embedding depth of the sample is lower than 1mm, bonding the embedded end with a primary cut part by virtue of quick-dry resin after the polishing process; burning out two sides of the paper frame at an un-embedded end by virtue of naked flame, averagely cutting the upper end of the paper frame according to the quantity of the ceramic fibers, and bonding and reinforcing the paper frame by virtue of a hard paperboard with area equal to that of the cut paper frame; firstly fixing the embedded end at a lower clamp of a testing machine, and then fixing a reinforcing section to an upper clamp of the testing machine; carrying out a single-filament draw-out experiment; recording each withdrawal force value given by a testing machine; observing the shape of an withdrawn end, and measuring the maximal withdrawing length of the single fiber; and calculating the interfacial bonding strength between the fiber and the resin.

Description

technical field [0001] The invention relates to ceramic fibers, in particular to a method for testing the interfacial bonding strength of ceramic fiber reinforced resin-based composite materials. Background technique [0002] Ceramic fibers mainly include new high-performance one-dimensional materials such as carbon fibers, silicon carbide fibers, silicon nitride fibers, and alumina fibers. The diameter of these fibers is about 10 μm. The resin composite materials prepared by using them as reinforcements have excellent mechanical properties. It can also have electromagnetic functions and has the potential to be used in aerospace, national defense and industrial fields. It is an advanced composite material that is being actively developed in various countries. Among them, how to make composite materials have excellent mechanical properties is one of the research focuses in the design and preparation of composite materials, and the measurement of the mechanical properties of t...

Claims

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Application Information

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IPC IPC(8): G01N19/04
Inventor 李思维李华展梁方舟涂惠彬陈立富
Owner XIAMEN UNIV
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