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Novel polyamide polymer material based on 2,5-diallyloxy p-phenylenediamine monomer and preparation method of novel polyamide polymer material

A technology of diallyloxy-p-phenylenediamine and diallyloxydiamino, which is applied in the field of new polyamide polymer materials and its preparation, and can solve the problems of limited compatibility, high crystallinity, and surface chemical activity. Low-level problems, to achieve the effect of improving the interface bonding strength, good interface recombination, and excellent thermal stability

Active Publication Date: 2019-12-20
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PPTA is an aramid fiber material with higher strength, but its solubility is very poor due to the rigid main chain and strong hydrogen bonds between chains. At present, aramid fiber is mainly prepared by sulfuric acid liquid crystal spinning
On the other hand, the molecular chains of PPTA are closely arranged, the crystallinity is high, and the structure lacks active reactive groups, resulting in extremely low surface chemical activity and limited compatibility with other matrix materials, and the sulfuric acid liquid crystal spinning process will destroy the introduced active group

Method used

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  • Novel polyamide polymer material based on 2,5-diallyloxy p-phenylenediamine monomer and preparation method of novel polyamide polymer material
  • Novel polyamide polymer material based on 2,5-diallyloxy p-phenylenediamine monomer and preparation method of novel polyamide polymer material
  • Novel polyamide polymer material based on 2,5-diallyloxy p-phenylenediamine monomer and preparation method of novel polyamide polymer material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] In this embodiment, the novel polyarylamide resin material containing allyloxy groups has the following repeating structural units:

[0069]

[0070] The specific preparation method is as follows: when equipped with stirring paddle, drying tube and N 2 Add 50ml of solvent N-methylpyrrolidone, cosolvent anhydrous CaCl 2 4.12g, add 12.48mmol (1.3496g) of diamino monomer p-phenylenediamine and 4.16mmol (0.9163g) of 2,5-diallyloxy-p-phenylenediamine successively, stir to dissolve them all, and put the mixture in- Cool at 10°C for 15min, under the conditions of -10°C and rapid stirring, add 16.64mmol (3.3793g) of terephthaloyl chloride and 29.95mmol (2.4ml) of pyridine in two times, and accelerate the stirring, preferably without splashing . Keep the temperature of the system at -10°C and stir for 0.5h of polycondensation reaction, then continue to stir at 30°C for 6h of polycondensation reaction, pour the mixture into a large amount of water for precipitation, wash wit...

Embodiment 2

[0074] In this embodiment, the novel polyarylamide resin material containing allyloxy groups has the following repeating structural units:

[0075]

[0076] The specific preparation method is as follows: when equipped with stirring paddle, drying tube and N 2 Add 50ml of solvent N-methylpyrrolidone, cosolvent anhydrous CaCl 2 4.12g, add 8.32mmol (0.8997g) of diamino monomer p-phenylenediamine and 8.32mmol (1.8326g) of 2,5-diallyloxy-p-phenylenediamine successively, stir to dissolve them all, and put the mixture in- Cool at 10°C for 15min, under the conditions of -10°C and rapid stirring, add 16.64mmol (3.3793g) of terephthaloyl chloride and 29.95mmol (2.4ml) of pyridine in two times, and accelerate the stirring, preferably without splashing . Keep the temperature of the system at -10°C and stir for 0.5h of polycondensation reaction, then continue to stir at 30°C for 6h of polycondensation reaction, pour the mixture into a large amount of water for precipitation, wash with...

Embodiment 3

[0080] In this embodiment, the novel polyarylamide resin material containing allyloxy groups has the following repeating structural units:

[0081]

[0082] The specific preparation method is as follows: when equipped with stirring paddle, drying tube and N 2 Add 50ml of solvent N-methylpyrrolidone, cosolvent anhydrous CaCl 2 4.12g, successively add 4.16mmol (0.4499g) of diamino monomer p-phenylenediamine, 12.48mmol (2.7490g) of 2,5-diallyloxy p-phenylenediamine, stir to dissolve them all, and the mixture is placed in - Cool at 10°C for 15min, under the conditions of -10°C and rapid stirring, add 16.64mmol (3.3793g) of terephthaloyl chloride and 29.95mmol (2.4ml) of pyridine in two times, and accelerate the stirring, preferably without splashing . Keep the temperature of the system at -10°C and stir for 0.5h of polycondensation reaction, then continue to stir at 30°C for 6h of polycondensation reaction, pour the mixture into a large amount of water for precipitation, wash...

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Abstract

The invention discloses a preparation method of an allyloxy-containing aromatic polyamide and hydroxyl-containing and an allyl-containing aromatic polyamide and application of the two kinds of polyamides. The novel polymer compound is a polymer composed of repetition structure units represented by a formula I-1 or a formula I-2. The diallyloxy diamine monomer is used as a basic monomer, and a series of novel aromatic polyamides with different side group contents are obtained through copolycondensation with a binary aromatic primary amine and a binary aromatic acyl halide in proportion. The prepared polymer has excellent thermal stability and rich functional groups on the side groups, and the interfacial bonding strength between different materials can be improved. Novel aramid pulp containing hydroxyl and allyl groups is prepared by a direct molding method, which can improve the bonding strength between the pulp and matrix materials, such as rubber, phenolic resin, etc., and further polymer materials with good interfacial combination performance are developed.

Description

technical field [0001] The invention belongs to the field of polymer material synthesis, and in particular relates to a novel polyamide polymer material based on 2,5-diallyloxy-p-phenylenediamine monomer and a preparation method thereof. Background technique [0002] Polyamide is a polymer whose main chain is composed of amide bonds. When more than 85% of the amide bonds in the main chain are directly connected to benzene rings, it is called a fully aromatic polyamide, also known as "aramid"; the main chain of aramid molecules is benzene rings. The structure alternated with amide bonds, the covalent bond energy is large, the rigid benzene ring and amide bond make the internal rotation energy barrier of the system high, the rigidity of the molecular chain is strong, there are no substituents on the main chain of the molecule, and the symmetry is high, which is beneficial to the molecular chain. Interchain hydrogen bonding and π-π stacking of benzene rings. Therefore, this ty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/32C08G69/48
CPCC08G69/32C08G69/48
Inventor 宛新华齐翔章斐张杰
Owner PEKING UNIV
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