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Method for preparing organic modification nano-montmorillonite enhanced polyimide fiber

A polyimide fiber, nano-montmorillonite technology, applied in the chemical characteristics of fibers, rayon manufacturing, single-component synthetic polymer rayon, etc., can solve the application limitations of textiles, polyimide fibers are difficult to dye, etc. problem, to achieve the effect of improving mechanical properties and strong flame retardant function

Active Publication Date: 2016-04-06
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, at present, polyimide fibers are difficult to dye, and their textile applications are greatly limited.

Method used

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  • Method for preparing organic modification nano-montmorillonite enhanced polyimide fiber
  • Method for preparing organic modification nano-montmorillonite enhanced polyimide fiber
  • Method for preparing organic modification nano-montmorillonite enhanced polyimide fiber

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: a kind of preparation method of organically modified nanometer montmorillonite reinforced polyimide fiber, comprises the following steps:

[0027] (1) Preparation of nano-montmorillonite: commercially available nano-montmorillonite (Zhejiang Fenghong New Material Co., Ltd., product model: BS, JF, HFGEL) is pulverized by jet milling to obtain particles with a particle size less than 100 nanometers. Nano montmorillonite;

[0028] (2) Organic modification of nano-montmorillonite: Add nano-montmorillonite to 3,3′,4,4′-biphenyltetracarboxylic dianhydride solution and p-phenylenediamine solution respectively, and place under magnetic Stir on the stirrer, the speed is 300 rpm, and the stirring time is 12h, respectively prepare 3,3′,4,4′-biphenyltetracarboxylic dianhydride modified nano-montmorillonite and p-phenylenediamine modified nano Montmorillonite; the concentration of the 3,3',4,4'-biphenyltetracarboxylic dianhydride solution and p-phenylenediamine soluti...

Embodiment 2

[0031] Embodiment 2: a kind of preparation method of organically modified nanometer montmorillonite reinforced polyimide fiber, comprises the following steps:

[0032] (1) Preparation of nano-montmorillonite: commercially available nano-montmorillonite (Zhejiang Fenghong New Material Co., Ltd., product model: BS, JF, HFGEL) is pulverized by jet milling to obtain particles with a particle size less than 100 nanometers. Nano montmorillonite;

[0033] (2) Organic modification of nano-montmorillonite: Add nano-montmorillonite to 3,3′,4,4′-biphenyltetracarboxylic dianhydride solution and p-phenylenediamine solution respectively, and place under magnetic Stir on the stirrer, the rotation speed is 800 rpm, and the stirring time is 4h, respectively to prepare 3,3′,4,4′-biphenyltetracarboxylic dianhydride modified nano-montmorillonite and p-phenylenediamine modified nano Montmorillonite; the concentration of the 3,3',4,4'-biphenyltetracarboxylic dianhydride solution and p-phenylenedia...

Embodiment 3

[0036] Embodiment 3: a kind of preparation method of organically modified nanometer montmorillonite reinforced polyimide fiber, comprises the following steps:

[0037] (1) Preparation of nano-montmorillonite: commercially available nano-montmorillonite (Zhejiang Fenghong New Material Co., Ltd., product model: BS, JF, HFGEL) is pulverized by jet milling to obtain particles with a particle size less than 100 nanometers. Nano montmorillonite;

[0038] (2) Organic modification of nano-montmorillonite: Add nano-montmorillonite to 3,3′,4,4′-biphenyltetracarboxylic dianhydride solution and p-phenylenediamine solution respectively, and place under magnetic Stir on the stirrer, the speed is 500 rpm, and the stirring time is 8h, respectively prepare 3,3′,4,4′-biphenyltetracarboxylic dianhydride modified nano-montmorillonite and p-phenylenediamine modified nano Montmorillonite; the concentration of the 3,3',4,4'-biphenyltetracarboxylic dianhydride solution and p-phenylenediamine solutio...

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Abstract

The invention relates to a method for preparing organic modification nano-montmorillonite enhanced polyimide fiber. The method comprises the steps of 1, preparing nano-montmorillonite; 2, adding the nano-montmorillonite to BPDA and PDA to obtain BPDA modified nano-montmorillonite and PDA modified nano-montmorillonite; 3, adding the BPDA modified nano-montmorillonite and the PDA modified nano-montmorillonite to a polyimide polymerization solution for polymerization, wherein the polyimide polymerization solution is composed of a monomer BPDA and a monomer PDA based on the molar ratio of (1:2)-(2:1), the molar ratio of the BPDA modified nano-montmorillonite to the PDA modified nano-montmorillonite is (1:9)-(9:1), and the total molar weight of the BPDA modified nano-montmorillonite and the PDA modified nano-montmorillonite accounts for 1-10% of the total molar weight of the monomer BPDA and the monomer PDA; 4, conducting spinning with the polymerization reaction product obtained from the step 3 to obtain the polyimide fiber. The problem that polyimide is hard to dye is solved, the mechanical performance of the polyimide fiber is improved, and flame retardance is improved.

Description

technical field [0001] The invention relates to a preparation method of polyimide fibers, in particular to a preparation method of organically modified nano-montmorillonite reinforced polyimide fibers, which belongs to the technical field of functional textile materials. Background technique [0002] Polyimide has good mechanical properties, and can withstand temperatures as high as 400°C, and can maintain normal performance at ultra-low temperatures below -200°C. It also has good insulation properties. It can be said that the overall performance is very good. Due to these good properties, the development prospect of polyimide is also very impressive. [0003] According to the different monomers that make up polyimide, polyimide can be divided into aliphatic polyimide without benzene ring, a semi-aromatic polyimide with monomer containing benzene ring and two kinds of mono There are three types of aromatic polyimides containing benzene rings. According to thermal propertie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10C08G73/10
CPCC08G73/1007C08G73/1067D01F1/10D01F6/94
Inventor 刘水平傅佳佳鲁双朱亚楠葛明桥
Owner JIANGNAN UNIV
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