Sample preparation method for testing mechanical property of carbon fiber

A carbon fiber and performance technology, which is applied in the field of sample preparation for carbon fiber mechanical performance testing, can solve problems such as the inability to guarantee the glue content of the carbon fiber to be tested and affect the mechanical performance of the fiber, and achieve uniform concentration of dipping solution, smooth surface, and uniform dipping Effect

Inactive Publication Date: 2012-04-25
JIANGSU HANGKE COMPOSITE MATERIALS TECH
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Problems solved by technology

[0004] In order to solve the technical problem that the existing sample preparation method for testing the mechanical properties of carbon fibers cannot guarantee the glue content of the carbon fibers to be tested and affects the mechanical properties of the fibers, the present invention provides a sample preparation method for testing the mechanical properties of carbon fibers

Method used

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  • Sample preparation method for testing mechanical property of carbon fiber
  • Sample preparation method for testing mechanical property of carbon fiber

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Embodiment Construction

[0027] exist figure 1 Among them, the arrangement of equipment in the technological process of the present invention is: wire-feeding roller 1-dipping tank 2-pressure roller 3-sample forming frame 4-blast drying oven 5.

[0028] The specific process is as follows:

[0029] 1) Put the carbon fiber to be tested on the vertical pay-off roller 1 at a uniform speed. Compared with the previous horizontal laying structure, the pay-off roll 1 is a vertical structure, which can reduce the swing of the wire; can reduce the swing of the wire , the spinning tension is more uniform;

[0030] 2) Pass the carbon fiber passing through the feeding roller 1 through the dipping tank 2. The dipping time is 3 to 10 minutes; the dipping tank 2 is a structure with a movable cover that can be easily removed. The length of the dipping tank 2 is 20 to 40 cm. The best is 30cm; the dipping tank can completely soak the carbon fiber when it passes through the dipping tank, and the dipping amount is basic...

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Abstract

The invention relates to a sample preparation method for testing the mechanical property of a carbon fiber, which comprises the following steps of: 1) placing the carbon fiber to be tested on a silk discharging roller; 2) gumming the carbon fiber passing through the silk discharging roller in a gumming slot; 3) ensuring that the gummed carbon fiber passes through a compression roller; 4) fixing the carbon fiber which passes through the compression roller and is gummed uniformly on a sample forming shelf, wherein the sample forming shelf can rotate at a constant speed for fixing the carbon fiber; and 5) drying the carbon fiber fixed on the sample forming shelf. The method solves the technical problems that the gel content of the carbon fiber to be tested cannot be ensured, and the mechanical property of the carbon fiber is influenced in the conventional sample preparation method for testing the mechanical property of the carbon fiber. By the method, gumming of a test sample is fuller, the gel content is more uniform, and gel breads which influence a test result do not exist on the sample.

Description

technical field [0001] The invention relates to the technical field of material testing, in particular to a sample preparation method for testing the mechanical properties of carbon fibers. Background technique [0002] Carbon fiber is a new type of carbon material that emerged in the 1960s. It has high specific strength, high specific modulus, high electrical and thermal conductivity, low thermal expansion coefficient, low density, high temperature resistance, fatigue resistance, creep resistance, and self-improvement. A series of excellent properties such as lubrication, it is an ideal functional material and structural material, widely used in aerospace, civil aviation, cultural and sports, transportation and other fields, and has broad application prospects. [0003] The mechanical properties of carbon fiber include tensile strength, tensile modulus, elongation at break, bulk density, linear density and other items. There are national standards for the test methods of c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28G01N1/30G01N3/00
Inventor 王浩静刘福杰范立东王红飞程璐刘欢
Owner JIANGSU HANGKE COMPOSITE MATERIALS TECH
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