Testing device of single component tensile property in composite fiber and testing method

Abstract

The invention discloses a testing device of a single component tensile property in a composite fiber. The testing device comprises a shell, a lifting mechanism, a holder and an electronic control system; the testing device further comprises a dissolution treatment mechanism used for dissolving other fiber components in the composite fiber except for the fiber components to be tested and a fixing component with a clamping unit. The testing method comprises step 1 of selecting composite fiber; step 2 of fixing the composite fiber; step 3 of placing the fixed composite fiber in a container, heating and dissolving; remaining the fiber to be tested; step 4 of testing the tensile performance of the composite fiber; step 5 of collecting data. According to the testing device of the single component tensile property in composite fiber and the testing method, the testing device can firstly dissolve other fiber components in the composite fiber except for the fibers to be tested, and then test the tensile performance of ultra-fine fibers; during the testing process, the ultra-fine fiber is convenient to clamp firmly, and not easy to bend or drop; the testing precision is high.

Description

technical field [0001] The invention relates to the technical field of measuring the tensile properties of composite fibers, in particular to a testing device and a testing method for 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, ...

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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

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