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Poly-benzobisoxazole polymer containing ion group and process for preparing same

A technology of polybenzobisoxazole and ionic group, applied in the field of polybenzobisoxazole polymer and its preparation, can solve the problem of insufficient compressive strength, torsional modulus, poor adhesion between fiber and matrix, and low tensile strength. Tensile strength and other issues, to achieve the effect of improving mechanical properties, improving interface properties, and improving heat resistance

Inactive Publication Date: 2005-04-06
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, Zylon is not perfect, and its compressive strength, torsional modulus, etc. are still insufficient
The axial compressive strength of Zylon is 200-400MPa, which is far lower than its tensile strength; when Zylon is used to prepare composite materials, there is also the problem of poor adhesion between the fiber and the matrix, which is caused by the macromolecule of PBO, the raw material for preparing Zylon. determined by the structural characteristics

Method used

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  • Poly-benzobisoxazole polymer containing ion group and process for preparing same
  • Poly-benzobisoxazole polymer containing ion group and process for preparing same
  • Poly-benzobisoxazole polymer containing ion group and process for preparing same

Examples

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Effect test

Embodiment 1

[0028] When equipped with a strong stirring device, N 2 Import and export, into the 0.5L reactor at the feeding port, first pass high-purity N 2 Displacing the air, at N 2 Under protection, add 13.3675g 4,6-diaminoresorcinol hydrochloride (DAR), 10.2095g terephthalic acid (TPA), 0.3364g 5-sodium sulfonate-1,3-isophthalic acid (SIPA) ), 53.54g polyphosphoric acid (PPA) (P 2 o 5 Concentration is 80wt%) and 26.89g P 2 o 5 , Seal the reactor.

[0029] Raise the temperature of the reaction materials in the reactor to 50°C and keep for 1 hour to make the materials mix initially, then slowly raise the temperature to 65°C and keep for 2 hours to further dissolve the materials. Raise the temperature of the reaction kettle to 100°C and react for 24 hours until the neutral color is detected at the gas escape port with pH test paper, which means that the system has completely removed HCl. Raise the temperature to 130°C for 3 hours, 150°C for 5 hours, then raise the temperature to 1...

Embodiment 2

[0032] When equipped with a strong stirring device, N 2 Import and export, into the 0.5L reactor at the feeding port, first pass high-purity N 2 Displacing the air, at N 2 Under protection, add 15.4219g 4,6-diaminoresorcinol hydrochloride (DAR), 9.6152g terephthalic acid (TPA), 3.8808g 5-sodium sulfonate-1,3-isophthalic acid (SIPA) ), 56.72g polyphosphoric acid (PPA) (P 2 o 5 Concentration is 80wt%) and 29.36g P 2 o 5 , Seal the reactor.

[0033] Raise the temperature of the reaction materials in the reactor to 50°C and keep for 1 hour to make the materials mix initially, then slowly raise the temperature to 65°C and keep for 3 hours to further dissolve the materials. Raise the temperature of the reactor to 100°C and react for 30 hours, until the pH test paper is used to detect a neutral color at the gas escape port, which means that the system has completely removed HCl. Raise the temperature to 130°C for 1.5 hours, 150°C for 3 hours, then raise the temperature to 175°...

Embodiment 3

[0036] When equipped with a strong stirring device, N 2 Import and export, into the 0.5L reactor at the feeding port, first pass high-purity N 2 Displacing the air, at N 2 Under protection, 11.3917g 4,6-diaminoresorcinol hydrochloride (DAR), 8.7005g terephthalic acid (TPA), 0.2867g 2-sodium sulfonate-1,4-terephthalic acid (SPPA ), 52.98g polyphosphoric acid (PPA) (P 2 o 5 Concentration is 80wt%) and 26.91g P 2 o 5 , Seal the reactor.

[0037]Raise the temperature of the reaction materials in the reactor to 50°C and keep for 1 hour to make the materials mix initially, then slowly raise the temperature to 65°C and keep for 3 hours to further dissolve the materials. Raise the temperature of the reaction kettle to 100°C and react for 20 hours until the neutral color is detected at the gas escape port with pH test paper, which means that the system has completely removed HCl. Raise the temperature to 130°C for 1 hour, 150°C for 5 hours, then raise the temperature to 175°C fo...

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Abstract

This invention discloses a polyphenylene and two- azole polymer with ionogenic group and its preparation method. The polymer solution can be dry sprayed and wet spinned to prepare high capability fiber by screw extruder, and its compression modulus can be determined by three points flexural measurement method. The polymer with strong ionic interaction between molecules is synthesized by import ionogenic group to macromolecular chain, and its interface capability can be improved. The above molecular structure is the polymer's molecular structure in this invention.

Description

technical field [0001] The invention relates to a polybenzobisoxazole polymer containing ionic groups and a preparation method thereof. Background technique [0002] The successful development of poly-p-phenylene terephthalate (PPTA) fibers in the 1960s set off an upsurge in research on high-performance fibers. Through molecular design and liquid crystal spinning technology, various high-performance fibers with excellent properties have been continuously developed. High-performance fibers prepared from aromatic heterocyclic polymers represented by poly-p-phenylenebenzobisoxazole (PBO) It is the best among them. Based on the research of the U.S. Air Force Materials Laboratory and Dow Chemical Company, Japan Toyobo successfully realized the industrial production of PBO fiber in the 1990s, and its trade name was "Zylon". Zylon has a tensile strength of 5.8GPa and a tensile modulus of 300GPa, which are twice that of PPTA fibers, respectively. In addition, Zylon also has excel...

Claims

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Application Information

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IPC IPC(8): C08G73/22
Inventor 杨胜林金俊弘李光江建明
Owner DONGHUA UNIV
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