A method of testing a tensile property of a single component in a composite fiber

A composite fiber and tensile performance technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, and analyzing materials, can solve the problems of inability to separate the fibers to be tested, insufficient stretching force, and falling off, etc., to achieve It is convenient and reliable to clamp microfiber, not easy to bend or fall off, and reduce the effect of test error

Active Publication Date: 2017-02-15
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the sea-island fiber, the "island" and "sea" components are continuous, dense, and evenly distributed in the axial direction of the fiber. It has the size of a conventional fiber. Using a specific solvent to dissolve the "sea" fiber component, you can get Bunch-like "island" fiber components, and the monofilament fineness of "island" fiber components is generally about 0.05D, which belongs to ultrafine fibers. The existing tensile performance testing equipment cannot meet the single component of sea-island fibers in composite fibers. Tensile performance test, firstly, the fiber to be tested in the composite fiber cannot be separated, and secondly, due to the clamping of the ultra-fine fiber, the firmness is not enough, and the ultra-fine fiber is prone to appear. The fiber bends or falls off, and accurate test data cannot be obtained. Therefore, a new device for testing the tensile properties of a single component in composite fibers is needed to meet the market demand in the technical field of tensile properties testing equipment

Method used

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  • A method of testing a tensile property of a single component in a composite fiber
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  • A method of testing a tensile property of a single component in a composite fiber

Examples

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Embodiment 1

[0039] A method for testing the tensile properties of a single component in a composite fiber, characterized in that it comprises the steps:

[0040] Step S1, selecting: taking a plurality of segment samples from the composite fiber roll, and picking a plurality of single composite fibers in each segment sample;

[0041] Step S2, fixing: each selected composite fiber is respectively fixed on the fixing component through the clamping unit;

[0042] Step S3, dissolving other fiber components in the composite fiber except the fiber component to be tested:

[0043] a. Put a plurality of fixed components clamped with composite fibers into a container containing a fiber dissolving solution, the fiber dissolving solution being one of toluene, dimethylformamide or NaOH;

[0044] b. Heating the container and controlling the temperature at a constant temperature of 95°C, setting the holding time at 30 minutes, dissolving other fiber components in the composite fiber except for the fibe...

Embodiment 2

[0062] A method for testing the tensile properties of a single component in a composite fiber, characterized in that it comprises the steps:

[0063] Step S1, selecting: taking a plurality of segment samples from the composite fiber roll, and picking a plurality of single composite fibers in each segment sample;

[0064] Step S2, fixing: each selected composite fiber is respectively fixed on the fixing component through the clamping unit;

[0065] Step S3, dissolving other fiber components in the composite fiber except the fiber component to be tested:

[0066] a. Put a plurality of fixed components clamped with composite fibers into a container containing a fiber dissolving solution, the fiber dissolving solution being one of toluene, dimethylformamide or NaOH;

[0067] b. Heating the container and controlling the temperature at a constant temperature of 98°C, setting the holding time at 25 minutes, dissolving other fiber components in the composite fiber except for the fibe...

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PUM

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Abstract

A method of testing a tensile property of a single component in a composite fiber is disclosed. The method includes S1) selecting the composite fiber, S2) fixing the composite fiber, S3) adding the fixed composite fiber to a container containing a specific solution, heating, dissolving, and maintaining a fiber to be tested, S4) checking the form of the fiber to be tested, S5) testing the tensile property of the fiber to be tested by a single fibre tensile strength tester, S6) averaging single fibre tensile strength data, and S7) averaging for a second time. The method can achieve dissolution of other fiber components except the fiber to be tested in the composite fiber and tensile property testing of an ultrafine fiber, reduces a tensile property test error of a single component in the composite fiber, and increases the testing efficiency.

Description

technical field [0001] The invention relates to the technical field of measuring the tensile properties of composite fibers, in particular to a method for testing the tensile properties of a single component in composite fibers. Background technique [0002] Composite fiber is a kind of multi-component fiber. There are two or more polymer fibers that are not mixed on the same fiber section. This fiber is called composite fiber. The composite fiber manufacturing technology can obtain both Two-component fibers with polymer properties, including side-by-side, skin-core, and island-in-the-sea composite fibers. Among them, the island-in-the-sea fiber has the characteristics of fineness and softness, which is more flexible and durable than collagen fibers in natural leather. Non-toxic and easy to maintain, it is mainly used in the manufacture of synthetic leather, artificial leather, etc. [0003] Determination of performance indicators of synthetic leather, the main indicators a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
CPCG01N3/08G01N2203/0017G01N2203/028
Inventor 陈韶娟朱士凤李涛
Owner QINGDAO UNIV
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