Testing device for tensile properties of single component in composite fibers

Abstract

The invention discloses a testing device for tensile properties of a single component in composite fibers; the device comprises a casing, a lifting mechanism, a clamping device and an electronic control system, wherein the clamping device comprises an upper handle clamper fixed with the casing and a lower handle clamper driven by the lifting mechanism; the upper handle clamper is provided with a stress sensor; the testing device also comprises a dissolving treatment mechanism for dissolving other fiber components except a to-be-tested fiber component in the composite fiber; the dissolving treatment mechanism comprises a container and a fixing assembly. According to the testing device for the tensile properties of the single component in the composite fibers, firstly, the testing device can realize dissolving of the other fiber components except the to-be-tested fiber component in the composite fibers; secondly, the testing device can determine tensile properties of a superfine fiber; and during the testing, the superfine fiber is convenient and reliable to clamp, the phenomenon of bending or falling of the superfine fiber is not easily caused, and 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 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, the main indicators a...

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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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