Liquid crystal polymer with ion groups and preparation method for liquid crystal polymer

A liquid crystal polymer, ionic group technology, applied in liquid crystal materials, chemical instruments and methods, etc., can solve the problems of poor compatibility of polymers of different polarities, phase separation of crystalline and amorphous polymers, and performance degradation, etc. Improved interface compatibility, low shrinkage, and low scrap rate

Inactive Publication Date: 2015-11-25
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In order to obtain polymer materials with excellent comprehensive properties, the existing polymer blending modification has become one of the effective ways to develop materials, but the current polymer blending modification has poor compatibility between different polar polymers , phase separation between crystalline and amorphous polymers, etc., and the current polymer additives usually have a single function, improving certain properties while causing deterioration of other properties

Method used

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  • Liquid crystal polymer with ion groups and preparation method for liquid crystal polymer
  • Liquid crystal polymer with ion groups and preparation method for liquid crystal polymer
  • Liquid crystal polymer with ion groups and preparation method for liquid crystal polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1), weigh 0.395mol of hydroquinone, 0.1mol of 4,4'-diphenol, 0.005mol of bright yellow, 0.4mol of adipoyl chloride and 0.1mol of terephthaloyl chloride, and set aside;

[0042] (2), hydroquinone, 4,4'-diphenol and bright yellow are dissolved in DMF, obtain mixed solution I;

[0043] (3), adding 79mL of pyridine into the mixed solution I to obtain the mixed solution II;

[0044] (4) Dissolve adipoyl chloride and terephthaloyl chloride in DMF, slowly add to the mixed solution II, stir for 30 minutes; raise the temperature to 110°C, react for 36 hours; obtain the mixed solution III;

[0045] (5) Add ethanol to the mixed solution III to precipitate, wash and filter for many times, and dry in vacuum to obtain a liquid crystal polymer with ionic groups, with a weight average molecular weight of 17,000.

Embodiment 2

[0047] (1), weighing 0.39mol of hydroquinone and 0.1mol of 1,4-butanediol, 0.01mol of bright yellow, 0.4mol of adipoyl chloride and 0.1mol of sebacoyl chloride, stand-by;

[0048] (2), hydroquinone, 1,4-butanediol and brilliant yellow are dissolved in DMF, obtain mixed solution I;

[0049] (3), adding 79mL of pyridine into the mixed solution I to obtain the mixed solution II;

[0050] (4) Dissolve adipoyl chloride and sebacoyl chloride in DMF, slowly add to the mixed solution II, stir for 30 minutes; raise the temperature to 110°C, react for 36 hours; obtain the mixed solution III;

[0051] (5) Add ethanol to the mixed solution III to precipitate, wash and filter for many times, and dry in vacuum to obtain a liquid crystal polymer with ionic groups, with a weight average molecular weight of 20,000.

Embodiment 3

[0053] (1), weigh the bisphenol A of 0.48mol, the bright yellow of 0.02mol, the adipoyl chloride of 0.4mol and the terephthaloyl chloride of 0.1mol, stand-by;

[0054] (2), bisphenol A and bright yellow are dissolved in solvent DMF, obtain mixed solution I;

[0055] (3), adding 79mL of pyridine into the mixed solution I to obtain the mixed solution II;

[0056] (4) Dissolve adipoyl chloride and terephthaloyl chloride in DMF, slowly add to the mixed solution II, stir for 30 minutes; raise the temperature to 110°C, react for 36 hours; obtain the mixed solution III;

[0057] (5) Add ethanol to the mixed solution III to precipitate, wash and filter for many times, and dry in vacuum to obtain a liquid crystal polymer with ionic groups, with a weight average molecular weight of 24,000.

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Abstract

The invention discloses a liquid crystal polymer with ion groups and a preparation method for the liquid crystal polymer. The liquid crystal polymer with the ion groups is formed by virtue of polycondensation of one or more of diol, diphenol or diamine, monomers with ion groups and acyl chloride. The preparation method for the liquid crystal polymer with the ion groups comprises: adding one or more of diol, diphenol or diamine into DMF, THF, acetonitrile, ethyl acetate or DMSO to obtain a mixed solution I; adding an acid-binding agent into the mixed solution I to obtain a mixed solution II; slowly dropwise adding the acyl chloride which is dissolved into the DMF, the THF, the acetonitrile, the ethyl acetate or the DMSO into the mixed solution II to obtain a mixed solution III; and adding alcohol substances into the mixed solution III, and performing washing and drying to obtain the liquid crystal polymer with the ion groups. The liquid crystal polymer with the ion groups disclosed by the invention is applied to the fields such as car parts, precise electronic instruments, light-guide fibers, medical apparatuses and instruments, waterproof materials, textile field, heat insulation materials, energy storage materials, body armors or parachutes and the like.

Description

technical field [0001] The invention belongs to the chemical field of liquid crystal polymers, in particular to a liquid crystal polymer with ionic groups and a preparation method thereof. Background technique [0002] In order to obtain polymer materials with excellent comprehensive properties, the existing polymer blending modification has become one of the effective ways to develop materials, but the current polymer blending modification has poor compatibility between different polar polymers , phase separation between crystalline and amorphous polymers, etc., and the current polymer additives usually have a single function, improving certain properties while causing deterioration of other properties. [0003] TLCP (thermotropic liquid crystal polymer) is a kind of high-performance liquid crystal polymer material, and its molecular chains are arranged in an orderly manner in the molten state. During processing, under the action of shear force or tensile strain flow, TLCP...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/688C08G63/685C08G69/44C08G69/42C08L77/12C08L67/06C08L67/02C08L55/02C08L77/06C09K19/38
Inventor 丛越华张宝砚陈非
Owner NORTHEASTERN UNIV
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