A method for hydroxylation modification of polyamide fiber surface
A polyamide fiber and hydroxylation technology, applied in fiber type, fiber treatment, ultrasonic/sonic fiber treatment, etc., can solve the problems of high equipment and environmental requirements, difficult continuous operation, complex process, etc., and achieve low equipment requirements, The effect of low cost and simple operation
Active Publication Date: 2019-04-09
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology
[0005] The purpose of the present invention is to provide a method for surface hydroxylation modification of polyamide fibers, which solves the problems of complex process, high cost, high requirements for equipment and environment, and difficult continuous operation in the existing grafting method
Method used
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[0038] 1) Polyamide fiber surface pretreatment
[0039] Cut the polyamide fiber fabric into a diameter of Φ55mm±2mm, (about 0.0880g-0.0890g), put the sample in acetone for ultrasonic cleaning for 30 minutes, soak it in 10% sodium hydroxide solution for 1 hour, take it out, wash it and dry it in the air .
[0040] 2) Optimization of phosphoric acid dosage
[0041] Mix 50mL formaldehyde solution with phosphoric acid solution with a mass concentration of 85% to obtain a mixed solution. The concentration of phosphoric acid in the mixed solution is shown in Table 1. Put 30 pieces of polyamide fiber fabric samples into the mixed solution and react at 60°C for 12 hours Finally, the hydroxylated polyamide fiber fabric (Nylon-OH) was taken out, washed repeatedly with a large amount of water for 3 to 5 times, and then dried in an oven at 50° C. for 1 to 2 hours.
[0042] Table 1 The amount of phosphoric acid added
[0043]
[0044] 3) Optimization of formaldehyde dosage
[0045] ...
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Abstract
The invention discloses a surface hydroxylation modification method of polyamide fibers.The method includes: pretreating the surfaces of the polyamide fibers; performing hydroxylation treatment on the surfaces of the polyamide fibers.The method has the advantages that the fiber pretreatment and the hydroxymethylation are performed in two steps, the method is simple to operate, short in reaction time and mild in reaction condition, and atmosphere adjusting is not needed; the method is low in equipment requirement, low in cost and capable of achieving continuous operation; the polyamide fibers modified by the hydroxylation can be used for preparing functional polyamide fibers such as flame-retardant polyamide fibers, antistatic polyamide fibers and antibacterial polyamide fibers.
Description
technical field [0001] The invention belongs to the technical field of polymer materials and functional textile materials, and in particular relates to a method for modifying the surface of polyamide fibers by hydroxylation. Background technique [0002] Polyamide has stable performance, strong toughness, excellent self-lubrication, wear resistance and chemical resistance, so it is widely used. With the increasing diversity of functional requirements, the modification of polyamide has become a research hotspot. Using polyamide as the base material, the dyeing performance, antistatic performance, antibacterial performance and solvent resistance of polyamide fiber can be improved and improved by grafting method, and a variety of functional materials can also be prepared to endow polyamide fiber with hydrophilic and hydrophobic properties, Flame retardant and conductive properties, and can also prepare tissue functional scaffolds. [0003] Polyamide is a class of chemically i...
Claims
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IPC IPC(8): D06M11/70D06M13/127D06M10/02D06M101/34
CPCD06M10/02D06M11/70D06M13/127D06M2101/34
Inventor 徐娜王学川马向东
Owner SHAANXI UNIV OF SCI & TECH