Elastic sheath-core fiber and preparation method thereof
A technology of elastic leather and fiber, which is applied in fiber processing, textiles, papermaking, yarn, etc., can solve the problems of restricting the practical application of stretchable conductive fibers, single structure, poor performance stability, etc., and achieve the regularity and controllability of the helical structure The effect of high resistance, increased roughness, and increased richness
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0056] The preparation method of the elastic sheath-core fiber provided by the present invention comprises the following steps:
[0057] S1. Pre-drafting the core layer filament 1 according to a preset drafting ratio;
[0058] S2. Preparation of cortex solution 11;
[0059] S3. Through the microfluidic coating coating technology in the form of solid-liquid, the skin layer solution 11 is coated on the surface of the pre-drawn core layer filament 1 and cured to form a film, and then the pre-drawn core layer filament 1 is released. stress to obtain elastic sheath-core fibers.
[0060] By adopting the above technical solution, the present invention uses a polymer with a certain film-forming property as the skin layer material, pre-stretched elastic filaments as the core layer material, and regulates the spinning process to prepare a kind of elastic fiber that is similar to the conventional single linear elastic fiber. The different new three-dimensional helical structure elastic...
Embodiment 1
[0082] A preparation method of elastic sheath-core fiber, comprising the following steps:
[0083] (1) Preparation of cortex solution: configure ethyl acetate and toluene into a mixed solvent with a mixing ratio of 3:1, set aside. Weigh an appropriate amount of SBS masterbatch and slowly add it to the mixed solvent, stir magnetically for 12 hours at room temperature until the SBS particles are completely dissolved, and prepare a 15% SBS solution with a clear and transparent texture.
[0084] (2) The core material is 140D PU filament, and the pre-drawing is 300%.
[0085] (3) Using microfluidic coating technology, through microfluidic chip channel design, SBS solution is used as the skin layer, wrapped on the surface of the pre-drawn core layer PU filament, at the chip outlet, wrapped on the surface of the PU filament The SBS solution was rapidly cured to form a film, and then the pre-drawing stress was released, and the PU fiber retracted naturally, and the SBS / PU skin-core c...
Embodiment 2
[0096] A preparation method of elastic sheath-core fiber, compared with the embodiment, the difference is that the mass fraction of SBS is 25%, and the pre-drafting of PU is 200%. Others are substantially the same as those in Embodiment 1, and are not repeated here.
[0097] see Figure 11 shown, it can be seen that SBS 25 / PU 200 Almost no micropores were observed on the surface of the composite elastic fiber. This may be due to the reduction of the solvent content in the cortex SBS solution, the reduction of the solvent-enriched phase volume relative to the total volume, and finally the formation of a small number of micropores on the fiber surface.
[0098] Although the energy loss of the composite elastic fibers prepared under this condition is small, the residual strain is large.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More