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Method for preparing functional polyamide fiber

A polyamide fiber and polyamide technology, which is applied in the field of preparation of functional polyamide fibers, can solve the problems of affecting the mechanical properties and functionalization effect of fibers, increasing the complexity of the process, and agglomerating fiber powder, so as to improve the functionalization effect. , The effect of good matrix dispersion and high powder concentration

Active Publication Date: 2013-11-20
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of masterbatch preparation, the surface modification of functional powders is generally carried out by coupling agent treatment to improve the dispersion of powder materials in the matrix. This method can effectively solve the above problems to a certain extent, but in the There is still a relatively serious powder agglomeration phenomenon in the obtained fiber, which seriously affects the mechanical properties and functionalization effect of the fiber.
On the other hand, this treatment method also increases the complexity of the process. The surface modification process is accompanied by the removal of the solvent and the treatment of the modified powder. Therefore, a more effective, simple and widely applicable method is sought. method to improve the functional effect of the fiber, and it is necessary to ensure that the fiber has good mechanical properties and has certain practical significance

Method used

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  • Method for preparing functional polyamide fiber

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of PBT functional masterbatch:

[0031] a) Mix and pulverize the CBT resin of model CBT160 and carbon nanotube powder with a particle size of 20nm to make a mixed powder with a CBT particle size of 100 mesh, wherein the content of the carbon nanotube powder is 30wt%;

[0032] b) Vacuum dry the above mixed powder. The water content of the system has a great influence on the performance of the CBT polymerization product. On the other hand, CBT resin is a high temperature sensitive substance. Therefore, the selected drying temperature is 80°C, and the drying time is 50h. The drying is completed After cooling the material to room temperature, take it out from the vacuum oven and store it dry;

[0033] c) Add 1wt% dispersant stearic acid to the dried mixed powder. The addition of stearic acid accelerates the dispersion process of carbon nanotube powder in the matrix on the one hand, and stearic acid can be used as a The heterogeneous nucleating agent can opt...

Embodiment 2

[0039] (1) Preparation of PBT functional masterbatch:

[0040] a) Mix and pulverize the CBT resin of model CBT160 and nano-titanium dioxide with a particle size of 40nm to make a mixed powder with a CBT particle size of 150 mesh, wherein the content of nano-titanium dioxide is 35wt%;

[0041] b) Vacuum dry the above mixed powder. The water content of the system has a great influence on the performance of the CBT polymerization product. On the other hand, CBT resin is a high temperature sensitive substance, so the selected drying temperature is 85°C, and the drying time is 48h. The drying is completed After cooling the material to room temperature, take it out from the vacuum oven and store it dry;

[0042] c) Add 2wt% stearamide fatty acid as a dispersant to the dried mixed powder. The addition of stearamide fatty acid on the one hand accelerates the dispersion process of nano-titanium dioxide in the matrix; on the other hand, stearamide fatty acid can be used as a Heterogene...

Embodiment 3

[0050] 1) Preparation of PBT functional masterbatch:

[0051] a) Mix and pulverize CBT resin of model CBT160 and tourmaline powder with a particle size of 60nm to make a mixed powder with a CBT particle size of 200 mesh, wherein the content of tourmaline powder is 40wt%;

[0052] b) Vacuum dry the above mixed powder. The water content of the system has a great influence on the performance of the CBT polymerization product. On the other hand, CBT resin is a high-temperature sensitive substance, so the selected drying temperature is 90 ° C, and the drying time is 45 hours. The drying is completed After cooling the material to room temperature, take it out from the vacuum oven and store it dry;

[0053] c) Add 2wt% dispersant stearic acid to the dried mixed powder. The addition of stearic acid accelerates the dispersion process of tourmaline powder in the matrix on the one hand, and on the other hand, stearic acid can be used as a The phase nucleating agent can optimize the crys...

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Abstract

The invention provides a method for preparing functional polyamide fiber. The preparation process mainly comprises the following two steps: functional powder, polybutylene terephthalate cyclic oligomer (CBT) and dispersant are mixed and subsequently prepared into PBT (Polybutylene Terephthalate) functional master batch through double-screw reactive extrusion, and the functional powder is one or more of carbon nanotube, nano titanium dioxide, tourmaline powder, nano-silver series antibacterial, nano silicon oxide and fluorescent powder; and then the master batch and the slices of PA (Polyamide) 6 or PA 66 are subjected to blended spinning, and the functional polyamide fiber is prepared. According to the method, the reactive extrusion processing technique is adopted, the operation is simple and convenient, the technological process is greatly shortened, the concentration of functional powder in the obtained PBT functional master batch can reach 30-40 wt%, the functional powder is well dispersed in substrate, the obtained PBT functional master batch and the polyamide polymers have good compatibility, and the functional effect of the fiber prepared by the method is remarkable.

Description

technical field [0001] The invention relates to the field of functional materials, in particular to a preparation method of functional polyamide fibers. Background technique [0002] In the past two decades, my country has made great progress in the chemical fiber industry, including polyester, nylon, spandex and other fiber varieties, and the production technology is becoming more and more mature. [0003] With the further development of the fiber industry, people's requirements for fibers are not limited to the functions of body covering and beauty in the past, but more focus on realizing the functionalization and diversified use of fibers. At present, the functional modification of various synthetic fibers including nylon 6, nylon 66 and PET fibers has made great progress. The main functional methods include chemical grafting of fibers, blend spinning and fabric Among them, the functionalization of fibers by blend spinning is the easiest and most effective means, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/90D01F1/10
Inventor 王彪李莉王华平
Owner DONGHUA UNIV