Preparation technology of polyamide acid magnetic nano-composite fiber

A polyamic acid and composite fiber technology, applied in the direction of single-component polyamide rayon, fiber treatment, fiber chemical characteristics, etc., can solve the problem of no electrical conductivity, etc., and achieve simple raw materials, easy access to raw materials, and good electrical conductivity Effect

Inactive Publication Date: 2017-03-15
杨磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary gloves are only made of ordinary polyester amine, which has no electrical conductivity. For users who are accustomed to using smartphones, when wearing gloves in w

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of preparation technology of polyamic acid magnetic nanocomposite fiber, comprises the steps:

[0022] (1) Below 10 degrees Celsius, weigh pyromellitic anhydride and diaminodiphenyl ether in equal proportions according to the molar mass, the pyromellitic anhydride is 45g, and the diaminodiphenyl ether is 90g;

[0023] (2) In a 250ml three-necked flask, add pyromellitic anhydride weighed in step (1), and add 13g of N,N-dimethylformamide;

[0024] (3) Pass protective nitrogen into the three-necked bottle;

[0025] (4) After pyromellitic anhydride is completely dissolved, diaminodiphenyl ether is gradually added to the mixed solution several times to obtain a polyamic acid solution;

[0026] (5) Add 17g of nano-Fe to the polyamic acid solution 3 o 4 granules, and use a stirring rod to stir continuously to obtain black viscous polyamic acid / Fe 3 o 4 mixture;

[0027] (6) The obtained black viscous polyamic acid / Fe 3 o 4 The mixed solution is loaded into 20ml ...

Embodiment 2

[0035] A kind of preparation technology of polyamic acid magnetic nanocomposite fiber, comprises the steps:

[0036] (1) Below 10 degrees Celsius, weigh pyromellitic anhydride and diaminodiphenyl ether in equal proportions according to the molar mass, the pyromellitic anhydride is 40g-50g, and the diaminodiphenyl ether is 80g-100g;

[0037] (2) In a 250ml three-necked flask, add the pyromellitic anhydride weighed in step (1), and add 12g-15g of N,N-dimethylformamide;

[0038] (3) Pass protective nitrogen into the three-necked bottle;

[0039] (4) After pyromellitic anhydride is completely dissolved, diaminodiphenyl ether is gradually added to the mixed solution several times to obtain a polyamic acid solution;

[0040] (5) Add 18g of nano Fe to the polyamic acid solution 3 o 4 granules, and use a stirring rod to stir continuously to obtain black viscous polyamic acid / Fe 3 o 4 mixture;

[0041] (6) The obtained black viscous polyamic acid / Fe 3 o 4 The mixed solution is ...

Embodiment 3

[0049] A kind of preparation technology of polyamic acid magnetic nanocomposite fiber, comprises the steps:

[0050] (1) Below 10 degrees Celsius, weigh pyromellitic anhydride and diaminodiphenyl ether in equal proportions according to the molar mass, the pyromellitic anhydride is 40g-50g, and the diaminodiphenyl ether is 80g-100g;

[0051] (2) In a 250ml three-necked flask, add the pyromellitic anhydride weighed in step (1), and add 12g-15g of N,N-dimethylformamide;

[0052] (3) Pass protective nitrogen into the three-necked bottle;

[0053](4) After pyromellitic anhydride is completely dissolved, diaminodiphenyl ether is gradually added to the mixed solution several times to obtain a polyamic acid solution;

[0054] (5) 16g-20g of nano-Fe 3 o 4 The particles were subjected to ultrasonic vibration treatment in N,N-dimethylformamide solution to obtain nano-Fe 3 o 4 solution;

[0055] (6) Add the nano-Fe prepared in step (5) to the polyamic acid solution 3 o 4 solution,...

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Abstract

The invention discloses a preparation technology of a polyamide acid magnetic nano-composite fiber. The preparation technology comprises the following steps of at the temperature of below 10 DEG C, adding weighed pyromellitic dianhydride into a 250 ml three-necked flask in an equal proportion of the pyromellitic dianhydride to diaminodiphenyl ether according to molar mass, adding 12 to 15 g of N,N-dimethylformamide, and introducing protective nitrogen; after the pyromellitic dianhydride is completely dissolved, gradually adding the diaminodiphenyl ether into the mixed liquor five times to obtain a polyamide acid solution; adding 16 to 20 g of nano Fe3O4 particles into the polyamide acid solution, and using a stirring rod for constant stirring so as to obtain a black thick polyamide acid and Fe3O4 mixed solution; subpackaging the obtained polyamide acid and Fe3O4 mixed solution into 20 ml injectors, and fixing the injectors onto a high-voltage electrostatic spinning device, wherein metal needles of the injectors are connected with one pole of a high-voltage power source; and enabling a receiving plate to be covered with an aluminum foil receiving plate so as to be connected with the other pole of the high-voltage power source, adjusting the distance between a spinning nozzle and a collecting plate, and setting the spinning time.

Description

technical field [0001] The invention relates to the technical field of polyamic acid preparation, in particular to a preparation process of polyamic acid magnetic nanocomposite fibers. Background technique [0002] Polyamide is commonly known as nylon (Nylon), which is a general term for polymers containing amide groups in the repeating unit of the main chain of the macromolecule. Polyamic acid can be obtained by ring-opening polymerization of lactam amine, or by polycondensation of diamine and dibasic acid. Polyamic acid is a kind of free shuttle group containing aromatic diamine and aromatic condensate. , The main chain is a linear polymer with an acid amine structure, which has good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubricating properties, and has a low friction coefficient and a certain resistance Combustible, easy to process, can return to its original shape after being pulled, wash...

Claims

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Application Information

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IPC IPC(8): D01F6/94D01F1/09C08G73/10D01D1/02D01D5/00
CPCC08G73/10C08L79/08D01F1/10D01F6/90D01F6/94C08G73/1071D01D1/02D01D5/003D01D5/0076D01F1/09
Inventor 杨磊
Owner 杨磊
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