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Soluble polyacrylic cyanide composite and preparation process thereof

A technology of polyacrylonitrile and composites, which is applied in the field of polyacrylonitrile spinning, and can solve the problems of reducing the mechanical and thermal properties of polymers, difficulty in controlling the process, and limitations

Inactive Publication Date: 2007-07-18
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Copolymerization and plasticization to prepare melt-processable polyacrylonitrile is to introduce the second or third monomer during the polymerization process to lower the melting point of the polymer. This method often reduces the mechanical and thermal properties of the polymer, and its application is limited. ; And the method of plasticizer plasticization is to add plasticizer in the polymer, the plasticizer of polyacrylonitrile is mainly water, in order to prevent the vaporization of water at the processing temperature, usually adopt the method of pressure melting and then decompression molding method, the process is difficult to control

Method used

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  • Soluble polyacrylic cyanide composite and preparation process thereof
  • Soluble polyacrylic cyanide composite and preparation process thereof
  • Soluble polyacrylic cyanide composite and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0032] The following ionic liquids were used to prepare polyacrylonitrile / ionic liquid complexes:

[0033]

[0034] Mix polyacrylonitrile and ionic liquid, stir evenly, and cool to room temperature to obtain polyacrylonitrile / ionic liquid compound.

[0035] Example

Embodiment 5～8

[0037] The following ionic liquids were used to prepare polyacrylonitrile / ionic liquid complexes:

[0038]

[0039] Example

[0040] The preparation method is the same as in Example 1.

Embodiment 9～12

[0042] The following ionic liquids were used to prepare polyacrylonitrile / ionic liquid complexes:

[0043]

[0044] Example

[0045] The preparation method is the same as in Example 1.

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PUM

PropertyMeasurementUnit
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Abstract

The present invention relates to meltable polyacrylonitrile composition connecting ionic liquid as plasticizer and its preparation process. The meltable polyacrylonitrile composition is prepared with polyacrylonitrile in 72-98 wt% and ionic liquid in 2-28 wt% and through stir at 25-90 deg.c to mix. It may be molten at 120-155 deg.c, and may be used as material for polyacrylonitrile fiber, film, etc. The ionic liquid in various kinds has no toxicity and no volatility and is environment friendly.

Description

technical field [0001] The invention belongs to the field of polyacrylonitrile spinning, in particular to a meltable polyacrylonitrile compound and a preparation method thereof. Background technique [0002] There is a very polar cyano group (-CN) in the macromolecules of polyacrylonitrile, and the strong interaction force between macromolecules leads to the melting point of polyacrylonitrile (theoretical value is 319 ° C) higher than its decomposition temperature (about 250 ℃), it is difficult to process by melting, so the solution processing method of polyacrylonitrile is very common. [0003] In 1941, DuPont (Du Pont) of the United States developed dimethylformamide (DMF) as a solvent for polyacrylonitrile for dry spinning. In 1958, American Cyanamid (American Cyanamid) used aqueous sodium thiocyanate as a solvent. , developed a polyacrylonitrile wet spinning process. In addition, solvents for polyacrylonitrile also include dimethylsulfoxide (DMSO), dimethylacetamide (D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/20C08J5/18D01F6/54C08K5/49C08K5/3445C08K5/17C08K5/3415
Inventor 张玉梅王华平程凌燕万盛行
Owner DONGHUA UNIV
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