A kind of polyamide composite fiber with intelligent surface and its preparation method and application
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A polyamide fiber and composite fiber technology, applied in the field of fiber materials, can solve problems such as low efficiency, poor dimensional stability, and unstable performance
Active Publication Date: 2022-04-29
BEIJING INST OF CLOTHING TECH
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[0002] Polyamide is a general term for polymer compounds containing amide bonds in the main chain. Polyamide fiber materials are widely used in various fields such as fabrics, filter materials, and catalysis. However, the strong hygroscopicity of traditional polyamide fibers makes them different from polyamide fibers. The good dimensional stability of ester, its poor dimensional stability, and the hydrophilicity and hydrophobicity of the material can be improved by changing the roughness or surface energy of the material surface
[0003] In the prior art, it involves increasing the roughness by surface etching, thereby improving the hydrophilicity and hydrophobicity of the surface. However, the etching will reduce the mechanical properties of the material to a certain extent, thereby reducing its practicability.
[0004] In the prior art, it also involves the use of silica particles to modify the surface of the material, thereby improving the hydrophilic and hydrophobic properties of the material. However, the modification mostly uses physical modification, and its performance is unstable, or, even if it is chemical Modified, its efficiency is also lower
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[0023] According to a preferred embodiment of the present invention, the particles are connected to the polyamide fiber matrix through ester bonds, amide bonds, ether bonds, C=N bonds, N-N bonds, C-C bonds, C=C bonds, S-S bonds, C-S bonds, etc. bond and / or S-O bond combination.
[0024] In a further preferred embodiment, the particles are bonded to the polyamide fiber matrix through ester bonds, amide bonds, ether bonds, C=N bonds, S-S bonds and / or C-S bonds.
[0025] In a further preferred embodiment, the particles are bonded to the polyamide fiber matrix through ester bonds, amide bonds and / or ether bonds.
[0026] Wherein, the particles are combined with the polyamide fiber matrix through chemical bonds, so that, compared with simple blending or bonding through adhesive action, the fibers in the present invention have a very stable structure.
[0027] In the present invention, the particles on the surface of the polyamide composite fiber did not fall off after the polyamid...
Embodiment 1
[0127] For the preparation of poly(N-isopropylacrylamide) particles containing epoxy groups in Example 1, refer to Document 1 (Penghui Li et al., Colloid Surface B 2013, 101, 251-255.);
Embodiment 2
[0128] For the preparation of poly(acrylic acid-styrene) particles in Example 2, refer to Document 2 (Xinlong Fan, etal. Polym. Chem., 2015, 6, 703-713);
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Abstract
The invention discloses a polyamide composite fiber with an intelligent surface and its preparation method and application. The polyamide composite fiber includes a polyamide fiber matrix and particles covering it. In this way, covering the particle on the surface of the fiber matrix can improve fiber The roughness, and then improve the hydrophilic and hydrophobic properties of the fibers, so that the poor dimensional stability of polyamide fibers caused by strong hygroscopicity is improved. The preparation is carried out as follows: first obtain the polyamide fiber matrix with reactive groups on the surface, then obtain particles with reactive functional groups, and finally mix the polyamide fiber matrix with the particles for reaction to obtain the polyamide composite fiber. The polyamide composite fiber of the present invention can be used in smart textiles, non-woven fabrics, porous membranes, composite materials and oil-water separators, preferably smart textiles and oil-water separators.
Description
technical field [0001] The invention belongs to the field of fiber materials, in particular to polyamide fibers, in particular to a polyamide composite fiber with an intelligent surface and its preparation method and application. Background technique [0002] Polyamide is a general term for polymer compounds containing amide bonds in the main chain. Polyamide fiber materials are widely used in various fields such as fabrics, filter materials, and catalysis. However, the strong hygroscopicity of traditional polyamide fibers makes them different from polyamide fibers. The ester has good dimensional stability, but its dimensional stability is poor, and the hydrophilic and hydrophobic properties of the material can be improved by changing the roughness or surface energy of the material surface. [0003] In the prior art, surface etching is used to improve the roughness, thereby improving the hydrophilicity and hydrophobicity of the surface. However, the etching will reduce the m...
Claims
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