Preparation for single wall carbon nano-tube monomer-containing compound for PBO polymerization

A technology of single-walled carbon nanotubes and composites, applied in chemical instruments and methods, liquid crystal materials, etc., can solve the problem that nanotube bundles cannot fully exert the reinforcing effect of SWNT on PBO matrix.

Active Publication Date: 2008-10-01
HARBIN INST OF TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Agglomerated nanotube bundles cannot fully exert the reinforcement effect of SWNT on PBO matrix

Method used

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  • Preparation for single wall carbon nano-tube monomer-containing compound for PBO polymerization
  • Preparation for single wall carbon nano-tube monomer-containing compound for PBO polymerization
  • Preparation for single wall carbon nano-tube monomer-containing compound for PBO polymerization

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specific Embodiment approach 1

[0011] Embodiment 1: The preparation method of the single-walled carbon nanotube monomer complex used for PBO polymerization in this embodiment is as follows: 1. Terephthalic acid and NaOH are mixed according to the molar ratio of 1:2 to prepare terephthalic acid Sodium diformate aqueous solution, wherein the concentration of NaOH aqueous solution is 0.5 ~ 3mol / L; 2. The single-walled carbon nanotube aqueous solution, the carboxylated single-walled carbon nanotube aqueous solution and the single-walled carbon nanotube treated with oleum, cut short and carboxylated The aqueous solution of carbon nanotubes is added to the aqueous solution of sodium terephthalate obtained in step 1 to obtain a mixed solution, and then the mixed solution is heated to 40°C to 60°C, wherein the volume of the aqueous solution of single-walled carbon nanotubes and the aqueous solution of sodium terephthalate obtained in step 1 The ratio is 1:1~2, the volume ratio of the aqueous solution of carboxylated...

specific Embodiment approach 2

[0012] Embodiment 2: This embodiment differs from Embodiment 1 in that the concentration of the NaOH aqueous solution in Step 1 is 0.6-1.5 mol / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0013] Embodiment 3: This embodiment differs from Embodiment 1 in that the concentration of the NaOH aqueous solution in Step 1 is 1.6-2.9 mol / L. Others are the same as in the first embodiment.

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Abstract

The invention provides a preparation method of single walled carbon nanotube monomer complex substances used for the polymerization of PBO, which relates to a preparation method of complex substances. The preparation method of the invention solves the problem of easy union owing to large superficial area of SWNT and high surface energy. The method of the invention is as follows: single walled carbon nanotube aqueous solution, carboxylated single walled carbon nanotube aqueous solution and single walled carbon nanotube aqueous solution which is processed by oleum, cut short and carboxylated are added into para-phthalic sodium aqueous solution to form mixed solution which is heated and added with 4, 6-diamino resorcinol hydrochloride aqueous solution; under the protection of N2 and at temperature of 70 to 95 DEG C, the reaction is continued for 5 to 20min, then the reaction product can be gained by being filtered and dried after cooling the temperature to room temperature. The complex substances prepared by adopting the method of the invention show cuboid rod-shaped structure and are even in size and without tangle.

Description

technical field [0001] The invention relates to a preparation method of a compound. Background technique [0002] Using 4,6-diaminoresorcinol hydrochloride (DADHB) and terephthalic acid (PTA) as polymerization monomers, polycondensation in polyphosphoric acid can obtain liquid crystal PBO (Poly-p-phenylene-benzobisthiazole) polymerization PBO fibers can be prepared by dry jet-wet spinning process, and the structural formula is as follows: [0003] [0004] PBO fiber is the abbreviation of Poly-p-phenylene-benzobisthiazole fiber (Poly-p-phenylene-benzobisthiazole), which is the most promising member of the polyamide family containing heterocyclic aromatics, and is currently the highest strength in the world. industrial fibers. It has a tensile strength of 5.8GPa, a tensile modulus of 280-380GPa, a thermal decomposition temperature of 650°C, and a density of only 1.56×10 3 kg / m 3 . [0005] Single-walled nanotubes (Single-walled nanotubes, SWNT), a carbon nanotube form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/22C08K3/04C08L79/00C09K19/38
Inventor 黄玉东王峰林宏宋元军胡娜
Owner HARBIN INST OF TECH
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