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Sampling method for mechanics performance testing of preoxidized fibers

A pre-oxidized fiber and performance technology, which is applied in the field of sample preparation for testing the mechanical properties of pre-oxidized fibers, can solve problems such as the inability to guarantee the glue content of the pre-oxidized fibers to be tested and affect the mechanical properties of the fibers, and achieves no hanging glue beads, surface Smooth, even dipping effect

Inactive Publication Date: 2011-02-09
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 pre-oxidized fibers cannot guarantee the glue content of the pre-oxidized fibers and affect the mechanical properties of the fibers, the present invention provides a method for testing the mechanical properties of pre-oxidized fibers. Sample preparation method

Method used

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  • Sampling method for mechanics performance testing of preoxidized fibers
  • Sampling method for mechanics performance testing of preoxidized fibers

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Embodiment Construction

[0027] exist figure 1 Among them, the equipment arrangement of the technological process of the present invention is as follows: spinning roller 1 - dipping tank 2 - pressing roller 3 - sample forming frame 4 - blast drying box 5 .

[0028] The specific process is as follows:

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

[0030] 2) Pass the pre-oxidized fibers passing through the spinning roll 1 through the dipping tank 2, and the dipping time is 3 to 10 minutes; the dipping tank 2 is a structure with a movable cover that can be easily removed, and the length of the dipping tank 2 is 20 to 10 minutes. 40cm, preferably 30cm; the dipping tank can completely soak the pre-oxidized fibers when passing through the dipping tan...

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Abstract

The invention relates to a sampling method for mechanics performance testing of preoxidized fibers, which comprises the following steps of: 1) putting the preoxidized fibers to be tested on a releasing roller; 2) performing gum dipping on the preoxidized fibers passing through the releasing roller in a gum dipping tank; 3) allowing the preoxidized fibers subjected to gum dipping to pass through a compression roller; 4) fixing the preoxidized fibers passing through the compression roller and subjected to uniform gum dipping to a sample forming frame, wherein the sample forming frame can rotate at a uniform speed and is used for fixing the preoxidized fibers; and 5) drying the preoxidized fibers fixed to the sample forming frame. The method solves the technical problem that the conventional sampling method for mechanics performance testing of the preoxidized fibers cannot ensure the gum content of the preoxidized fibers to be tested so as to influence the mechanics performance of the fibers, and makes a tested sample dip gum more fully have the gum content more uniform; and gum beads influencing test results cannot be left on the sample.

Description

technical field [0001] The invention belongs to the technical field of material testing, and particularly relates to a sample preparation method for testing the mechanical properties of preoxidized 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 With a series of excellent properties such as lubrication, it is an ideal functional material and structural material. It is widely used in aerospace, civil aviation, culture and transportation, and has broad application prospects. [0003] The preparation of carbon fiber includes three major processes: spinning, pre-oxidation, and carbonization. Among them, the pre-oxidation of the precursor is the key process that affects the quality, carbon yield and product...

Claims

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Application Information

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IPC IPC(8): G01N1/28
Inventor 王浩静刘福杰范立东程璐刘欢王红飞
Owner JIANGSU HANGKE COMPOSITE MATERIALS TECH
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