Sample making method for carbon fiber interlayer shearing strength test, and special die therefor

A carbon fiber layer and shear strength technology, applied in the field of special molds for sample preparation methods, can solve the problems of long process flow, complex process, uneven glue content in sample preparation, etc., to reduce costs, facilitate industrial processing, and have high toughness. Effect

Active Publication Date: 2013-08-07
安徽首文碳纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the commonly used sample preparation method process is as follows: first put the carbon fiber tow into the dipping tank through the wire release roller, and then wind the roller to make a unidirectional prepreg cloth. After the prepreg cloth is dri

Method used

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  • Sample making method for carbon fiber interlayer shearing strength test, and special die therefor
  • Sample making method for carbon fiber interlayer shearing strength test, and special die therefor
  • Sample making method for carbon fiber interlayer shearing strength test, and special die therefor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041] Example one

[0042] The sample preparation method for interlayer shear strength test of carbon fiber includes the following steps:

[0043] Step a): Take 20 40cm long carbon fiber tows and lay them on the spacer paper;

[0044] Step b): successively use a pen or brush with a width of 2-8 cm to dip the formulated epoxy resin and paint on both sides of the carbon fiber tow, so that both sides of the carbon fiber tow are evenly coated with epoxy resin;

[0045] Step c): First spray the release agent on the groove 14 and the boss 22 of the mold, and then put the epoxy-coated carbon fiber tow into the groove 14 of the mold with a length of 16 cm in turn, and apply epoxy The two ends of the resin carbon fiber tow extend out of both sides of the base 1, and each carbon fiber tow is manually straightened in turn, and the piston 2 of the mold is matched with the base 1 to squeeze the carbon fiber tow and epoxy resin in the groove 14. Extrude the air and more epoxy resin in the groove ...

Example Embodiment

[0049] Example two

[0050] The sample preparation method for interlayer shear strength test of carbon fiber includes the following steps:

[0051] Step a): Take 25 50cm long carbon fiber tows and lay them on the spacer paper;

[0052] Step b): successively use a pen or brush with a width of 2-8 cm to dip the formulated epoxy resin and paint on both sides of the carbon fiber tow, so that both sides of the carbon fiber tow are evenly coated with epoxy resin;

[0053] Step c): First spray the release agent on the groove 14 and the boss 22 of the mold, and then put the epoxy-coated carbon fiber tow into the groove 14 of the mold with a length of 20 cm in turn, and apply epoxy The two ends of the resin carbon fiber tow extend out of both sides of the base 1, and each carbon fiber tow is manually straightened in turn, and the piston 2 of the mold is matched with the base 1 to squeeze the carbon fiber tow and epoxy resin in the groove 14. Extrude the air and more epoxy resin in the groove ...

Example Embodiment

[0057] Example three

[0058] The sample preparation method for interlayer shear strength test of carbon fiber includes the following steps:

[0059] Step a): Take 30 60cm-long carbon fiber tows and lay them on the spacer paper;

[0060] Step b): successively use a pen or brush with a width of 2-8 cm to dip the formulated epoxy resin and paint on both sides of the carbon fiber tow, so that both sides of the carbon fiber tow are evenly coated with epoxy resin;

[0061] Step c): First spray the release agent on the groove 14 and the boss 22 of the mold, and then put the epoxy-coated carbon fiber tow into the groove 14 of the mold with a length of 24 cm, and then apply the epoxy resin. The two ends of the resin carbon fiber tow extend out of both sides of the base 1, and each carbon fiber tow is manually straightened in turn, and the piston 2 of the mold is matched with the base 1 to squeeze the carbon fiber tow and epoxy resin in the groove 14. Extrude the air and more epoxy resin in t...

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Abstract

The invention provides a sample making method for carbon fiber interlayer shearing strength test, and a special die therefor. The method comprises the following steps: brushing carbon fiber filament bundles with an epoxy resin, putting the obtained carbon fiber filament bundles in the die, carrying out baking curing, and cooling to complete a sample making operation. The method has the advantages of simplicity and easy operation of the sample making operation, substantial shortening of the time of manual work, and realization of the balanced distribution of the carbon fiber filament bundles in the obtained sample. The die comprises a pedestal, a piston and a C-shaped clamp; the upper end surface of the pedestal is provided with a groove penetrating through the front and back sides of the pedestal, the piston is formed by an upper cover arranged at the upper portion and a boss having a lower end aligned with a pedestal groove, the height of the boss is smaller than the depth of the pedestal groove, and the C-shaped clamp fixes the pedestal and the piston which are installed in a fit mode. The die completely accords with the demands of the method, has a simple structure and is convenient to process.

Description

technical field [0001] The invention relates to a sample preparation method for the carbon fiber interlayer shear strength test, and also relates to a special mold for the sample preparation method for the carbon fiber interlayer shear strength test. Background technique [0002] Carbon fiber is a new type of high-performance fiber material with a carbon content of more than 92%. It has many excellent properties such as high specific strength, high specific modulus, high temperature resistance, corrosion resistance, fatigue resistance, electrical conductivity, thermal conductivity and far-infrared radiation. , widely used in aerospace, military defense, sports equipment and industrial fields, is an important strategic basic material of the country. [0003] As a brittle material, carbon fiber is rarely used alone, and is mostly combined with epoxy resin to make composite materials to give full play to its excellent performance. The interlayer shear strength of carbon fiber ...

Claims

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Application Information

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IPC IPC(8): G01N1/44G01N1/28
Inventor 刘化虎郭光陈群杨成其杜亮吴伟宋会青潘威
Owner 安徽首文碳纤维有限公司
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