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Soluble polyimide film having flame retardancy and preparation method

A technology of soluble polyimide film and flame retardancy, which is applied in the field of soluble polyimide film and preparation, can solve the problem of poor heat resistance, achieve improved solubility and flame retardancy, and good flame retardancy performance, the effects of good thermal stability

Active Publication Date: 2016-10-26
HUBEI DINGLONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] This resin has comprehensive physical and mechanical properties, with a relative density of 1.38 and a glass transition temperature of 275°C. It has good wear resistance, radiation resistance and electrical insulation, but its heat resistance is not as good as that of thermosetting polyimide.

Method used

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  • Soluble polyimide film having flame retardancy and preparation method
  • Soluble polyimide film having flame retardancy and preparation method
  • Soluble polyimide film having flame retardancy and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]1) Clean all the glass instruments to be used in the experiment and dry them for later use;

[0042] 2) Add 0.3522g (0.8mmol) 4-aminophenyl-3-methyl-4-aminophenyl-9,10-dihydro-9- Oxa-10-phosphaphenanthrene-10-phosphoryl ethane (AMADOPPE) and 0.7176g (3.2mmol) 2-(3-aminophenyl)-5-aminobenzimidazole (i-DAPBI) and 12.9688g ( 131mmol) N-methylpyrrolidone (NMP) solvent, stir until AMADOPPE and i-DAPBI are completely dissolved; after the dissolution is complete, use an ice-water bath to lower the temperature of the reaction system to between 10 and 15°C, and pour it into a three-necked flask within 1h Add 1.7770g (4mmol) 4,4'-(hexafluoroisopropylene) diphthalic anhydride (6-FDA), the total solid content is 18% (the total solid content is the sum of the two diamine monomers and the dianhydride weight, Compared to the sum of two diamine monomers, dianhydride and solvent); after the addition, keep the temperature of the reaction system between 10-15°C and react for 12 hours to o...

Embodiment 2

[0045] 1) Clean all the glass instruments to be used in the experiment and dry them for later use;

[0046] 2) Add 0.8565g (2mmol) 4-aminophenyl-3-methyl-4-aminophenyl-9,10-dihydro-9-oxo to a 250mL three-necked flask equipped with a mechanical stirring rod and a nitrogen protection device Hetero-10-phosphaphenanthrene-10-phosphoryl ethane (AMADOPPE) and 0.4485g (2mmol) 2-(3-aminophenyl)-5-aminobenzimidazole (i-DAPBI) and 14.0402g (142mmol) N-methylpyrrolidone (NMP) solvent, stir until AMADOPPE and i-DAPBI are completely dissolved; after the dissolution is complete, use an ice-water bath to lower the temperature of the reaction system to between 10 and 15°C, and add 1.7770g to the three-necked flask within 1h (4mmol) 4,4'-(hexafluoroisopropylene) diphthalic anhydride (6-FDA), the total solid content is 18% (the total solid content is the sum of two kinds of diamine monomers and dianhydride weight, compared to The sum of two diamine monomers, dianhydride and solvent); after the...

Embodiment 3

[0049] 1) Clean all the glass instruments to be used in the experiment and dry them for later use;

[0050] 2) Add 1.4087g (3.2mmol) 4-aminophenyl-3-methyl-4-aminophenyl-9,10-dihydro-9- Oxa-10-phosphaphenanthrene-10-phosphoryl ethane (AMADOPPE) and 0.1794g (0.8mmol) 2-(3-aminophenyl)-5-aminobenzimidazole (i-DAPBI) and 15.3326g ( 155mmol) N-methylpyrrolidone (NMP) solvent, stir until AMADOPPE and i-DAPBI are completely dissolved; after the dissolution is complete, use an ice-water bath to lower the temperature of the reaction system to between 10 and 15°C, and add it to the three-necked flask within 1h 1.7770g (4mmol) 4,4'-(hexafluoroisopropylene) diphthalic anhydride (6-FDA), the total solid content is 18% (the total solid content is the sum of the weights of the two diamine monomers and dianhydrides, which correspond to than the sum of two diamine monomers, dianhydride and solvent); after the addition, keep the temperature of the reaction system at 10-15°C and react for 12 h...

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Abstract

The invention discloses a soluble polyimide film having flame retardancy and a preparation method. The preparation method comprises the steps that 1, 4-amino phenyl-3-methyl-4-amino phenyl-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-phosphoryl ethane and 2-(3-amino phenyl)-5-amino benzimidazole are dissolved in a polar solvent according to preset proportion; 2, 4,4'-(hexafluoroisopropylidene)diphthalic anhydride is added to the mixed solution according to preset proportion to obtain a polyamide acid adhesive solution; 3, a flat-plate mold is uniformly coated with the polyamide acid adhesive solution, and thermal imidization is performed through programmed heating. The soluble polyimide film (namely a PI film) prepared by means of the preparation method has good thermal stability, excellent optical permeation performance and excellent flame retardancy and solubility, and especially on the aspects of the solubility and flame retardancy, the solubility and flame retardancy of the PI film are obviously improved with increase of the AMADOPPE content of the PI film.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a flame-retardant soluble polyimide film and a preparation method thereof. Background technique [0002] In the middle of the 20th century, with the development of aviation and aerospace technology, various industries have an urgent demand for heat-resistant, strong, and lightweight structural materials. Came into being. The emergence of this type of polymer increased the use temperature of the polymer structural materials at that time by more than 100 ° C, and thus became a major achievement in the history of polymer science research in this period. There were dozens of aromatic heterocyclic polymers published at that time, but only a few were actually accepted by the industry, mainly including polyphenylene sulfide, polyethersulfone, polyetherketone and polyimide. Among them, polyimide is the most eye-catching in terms of cost performance. [0003] Poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10C08J5/18
CPCC08G73/1042C08G73/1057C08G73/1067C08J5/18C08J2379/08
Inventor 胡思前蔡春飞代云利陈薇陈妤红刘继延尤庆亮
Owner HUBEI DINGLONG CO LTD
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