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Polyacrylonitrile fiber containing hyperbranched polymer and its preparation method

A hyperbranched polymer and polyacrylonitrile fiber technology, which is applied in the field of fiber modification, can solve the problems of difficult nanoscale dispersion and poor processing performance of hyperbranched polymers, and achieve improved thermal stability, good processing performance, and improved processing performance effect

Active Publication Date: 2020-08-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention uses short-chain small molecules with amine groups (containing molecular B substances) to modify the easily reactive groups of hyperbranched polymers, and then carries out metal coordination to solve the problem of hyperbranched polymers in the prior art. It is difficult to disperse at the nanometer scale, the synthesis process requires the use of organic solvents, and the processing performance is poor, which expands the application range of this type of material

Method used

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  • Polyacrylonitrile fiber containing hyperbranched polymer and its preparation method
  • Polyacrylonitrile fiber containing hyperbranched polymer and its preparation method
  • Polyacrylonitrile fiber containing hyperbranched polymer and its preparation method

Examples

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Effect test

Embodiment 1

[0069] The preparation method of the polyacrylonitrile fiber containing hyperbranched polymer, concrete steps are as follows:

[0070] (1) Preparation of a substance containing molecule A;

[0071] Pyrazine-2,3-dicarboxylic acid and 1,1,1-tri(hydroxymethyl)propane with a molar ratio of 1:1 were subjected to an esterification reaction at a temperature of 150°C under nitrogen protection for 1 h, and then at temperature Under the conditions of 200°C and 0 MPa, vacuumize the polycondensation reaction for 4 hours to obtain the substance containing molecule A, wherein stirring is required during the esterification reaction and polycondensation reaction, and the stirring rate is 200rpm;

[0072] (2) The substance containing molecule A prepared in step (1) is mixed with an aqueous solution of n-propylamine (containing substance B containing molecule) at a concentration of 0.3mol / L in the form of powder, accompanied by stirring during mixing, and then poured into the mixing system AgN...

Embodiment 2

[0079] The preparation method of the polyacrylonitrile fiber containing hyperbranched polymer, concrete steps are as follows:

[0080] (1) Preparation of a substance containing molecule A;

[0081] 2-carboxyethylphenylphosphinic acid and tris(2-hydroxyethyl)isocyanurate with a molar ratio of 1:2 were subjected to esterification reaction at a temperature of 180°C under nitrogen protection for 2h, and then at temperature The temperature is 180°C, and the pressure is -0.1MPa, and the polycondensation reaction is carried out for 3 hours to obtain the substance containing molecule A. Stirring is required during the esterification reaction and polycondensation reaction, and the stirring rate is 300rpm;

[0082] (2) The substance containing molecule A obtained in step (1) is mixed with an aqueous solution of n-butylamine (containing substance B containing molecule) at a concentration of 0.58mol / L in the form of powder, accompanied by stirring during mixing, and then mixed FeCl with ...

Embodiment 3

[0089] The preparation method of the polyacrylonitrile fiber containing hyperbranched polymer, concrete steps are as follows:

[0090] (1) Preparation of a substance containing molecule A;

[0091] 5-tert-butyl-1,3-benzenedicarboxylic acid and 2,4,5-trihydroxybutyrophenone at a molar ratio of 1:3 were subjected to an esterification reaction at a temperature of 160°C under nitrogen protection for 1.5 hours, Then vacuumize the polycondensation reaction at a temperature of 190°C and a pressure of -0.05MPa for 2 hours to obtain a substance containing molecule A, wherein stirring is required during the esterification reaction and polycondensation reaction, and the stirring rate is 400rpm;

[0092] (2) Mix the substance containing molecule A prepared in step (1) in the form of powder with an aqueous solution of polyetheramine D230 (containing substance B containing molecule) at a concentration of 0.49mol / L, and stir when mixing, and then add FeCl with a concentration of 0.8mol / L wa...

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Abstract

The invention relates to a polyacrylonitrile fiber containing a hyperbranched polymer and a preparing method thereof. The preparing method includes the steps that original spinning liquid containing amultifunctional modifying agent and polyacrylonitrile is subjected to wet spinning, and the polyacrylonitrile fiber containing the hyperbranched polymer is prepared; a molecular structural formula ofthe multifunctional modifying agent is mainly formed by a molecule A, a molecule B and a metal ion Mn+, metal ion in the molecule A, amido in the molecule B and the metal ion Mn+ form a triangular bonding structure through bond joint of ionic bonds and coordination bonds, and the structural formula is defined in the description. The filament number of the polyacrylonitrile fiber containing the hyperbranched polymer is 1.3 dtex to 2.5 dtex, the limit oxygen index is 29% to 38 %, and the antibacterial rate of staphylococcus aureus is 77% to 93%. The preparing method of the polyacrylonitrile fiber containing the hyperbranched polymer is simple in technology, environmentally friendly and low in cost; the polyacrylonitrile fiber containing the hyperbranched polymer is excellent in flame resistance, antibacterial property and mechanical property and good in market prospect.

Description

technical field [0001] The invention belongs to the technical field of fiber modification, relates to a polyacrylonitrile fiber containing a hyperbranched polymer and a preparation method thereof, in particular to a flame-retardant and antibacterial polyacrylonitrile fiber added with a multifunctional modifier with excellent processing performance and its Preparation. Background technique [0002] Polyacrylonitrile fiber is one of the four major varieties of synthetic fibers. It is an excellent raw material for textile products. It has good light resistance, radiation resistance, warmth retention and high softness. It is known as "artificial wool", so it is widely used. In clothing fabrics and curtains and other fields. With the continuous development of society, people put forward higher requirements on the functionality of polyacrylonitrile fibers. Functional modification of polyacrylonitrile fibers has become a hot research direction at present. [0003] The limiting o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/54D01F1/10C08G83/00
Inventor 孙宾纪晓寰朱美芳周哲相恒学敖翔陈珈刘林
Owner DONGHUA UNIV
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