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Phosphorus-containing polyaryletherketone capable of increasing interlaminar toughness of bismaleimide resin based composite material and its toughening film

A polyaryletherketone and dual-horse resin technology, which is applied in the field of phosphorus-containing polyaryletherketone and its toughening film, can solve problems such as increasing the difficulty of resin injection, sudden increase in viscosity, composite material manufacturing process and product control impact, etc.

Active Publication Date: 2014-02-05
JILIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the excellent solubility of PEK-C makes it dissolve prematurely at the injection temperature of Shuangma resin, resulting in a sudden increase in the viscosity of the resin system after a period of injection, which increases the difficulty of resin injection and affects the manufacturing process and products of composite materials. control has a greater impact

Method used

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  • Phosphorus-containing polyaryletherketone capable of increasing interlaminar toughness of bismaleimide resin based composite material and its toughening film
  • Phosphorus-containing polyaryletherketone capable of increasing interlaminar toughness of bismaleimide resin based composite material and its toughening film
  • Phosphorus-containing polyaryletherketone capable of increasing interlaminar toughness of bismaleimide resin based composite material and its toughening film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 31.83g (0.1mol) of phenolphthalein, 13.82g (0.1mol) of potassium carbonate, and 4,4'-difluorodifluoride into a dry three-necked flask equipped with mechanical stirring, spherical condenser, nitrogen inlet, water separator and thermometer. 2.25g (0.0103mol) of benzophenone, 29.12g (0.0927mol) of 4,4'-difluorodiphenoxy, 150ml of sulfolane, 40ml of xylene, the solid content of the solution is about 25%.

[0033] Pour in nitrogen protection, reflux at 200°C for 4 hours, then distill the xylene out, heat up to 220°C, react for 4 hours to obtain a viscous reaction product, slowly pour it into distilled water, in a white strip shape, pass through a crusher After pulverization, it was boiled with deionized water 10 times to remove the solvent and inorganic salt. The final product was dried in an oven at 100°C for 24 hours to obtain polymer 1. The polymer had a phosphorus specific gravity of 4.79% and a number average molecular weight of 13W.

[0034] Dissolve 1.2 g of polymer 1 ...

Embodiment 2

[0037] Add 31.83g (0.1mol) of phenolphthalein, 13.82g (0.1mol) of potassium carbonate, and 4,4'-difluorodifluoride into a dry three-necked flask equipped with mechanical stirring, spherical condenser, nitrogen inlet, water separator and thermometer. Benzophenone 11.24g (0.0515mol), 4,4'-difluorodiphenylphosphine 16.18g (0.0515mol), sulfolane 140ml, xylene 40ml, the solid content of the solution is about 25%. Pour in nitrogen protection, reflux at 200°C for 4 hours, then distill the xylene out, heat up to 220°C, react for 4 hours to obtain a viscous reaction product, slowly pour it into distilled water, in a white strip shape, pass through a crusher After pulverization, it was boiled 10 times with deionized water to remove the solvent and inorganic salt. The final product was dried in an oven at 100°C for 24 hours to obtain polymer 2. The polymer had a phosphorus specific gravity of 2.85% and a number average molecular weight of 10W.

[0038] Dissolve 1.2 g of polymer 2 in 10.8 g ...

Embodiment 3

[0041] Add 31.83g (0.1mol) of phenolphthalein, 13.82g (0.1mol) of potassium carbonate, and 4,4'-difluorodifluoride into a dry three-necked flask equipped with mechanical stirring, spherical condenser, nitrogen inlet, water separator and thermometer. Benzophenone 17.98g (0.0824mol), 4,4'-difluorodiphenylphosphine 6.47g (0.0206mol), 134ml sulfolane, 40ml xylene, the solid content of the solution is about 25%. Pour in nitrogen protection, reflux at 200°C for 4 hours, then distill the xylene out, heat up to 220°C, react for 4 hours to obtain a viscous reaction product, slowly pour it into distilled water, in a white strip shape, pass through a crusher After crushing, boiling with deionized water 10 times to remove the solvent and inorganic salt, the final product was dried in an oven at 100°C for 24 hours to obtain polymer 3 with a phosphorous specific gravity of 1.20% and a number average molecular weight of 6W.

[0042] 1.2 g of polymer 3 was dissolved in 10.8 g of chloroform to pr...

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Abstract

The invention belongs to the technical field of composite material preparation and specifically relates to phosphorus-containing polyaryletherketone capable of increasing interlaminar toughness of a bismaleimide resin based composite material and its toughening film. In allusion to specific technological requirements for preparing a composite material laminate from a bismaleimide resin system by a RTM forming process, an interlaminar-toughening phosphorus-containing polyaryletherketone film which matches the bismaleimide resin RTM forming process is designed. The invention is characterized in that the film is basically not dissolved in the resin system at the bismaleimide resin injection stage so as to maintain a complete film structure and effectively avoid problems such as resin flowing difficulty caused by abrupt increases in viscosity of the resin system due to the film dissolved during the injection process; but at the stage of heating and curing processes after resin injection, the toughening film and the resin matrix undergo dissolution and phase splitting so as to generate the toughening effect, form the interlaminar-toughening structure, raise damage tolerance of the composite material and greatly improve interlaminar toughness of the composite material. Meanwhile, the phosphorus-containing polyaryletherketone has excellent heat resistance, and heat resistance of the composite material will not be influenced.

Description

Technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a phosphorus-containing polyaryl ether ketone capable of interlayer toughening of a bima resin-based composite material and a toughened film thereof. Background technique [0002] With the development of aerospace manufacturing technology, the requirements for material performance and structural weight ratio are getting higher and higher. Fiber-reinforced resin matrix composites have been widely used in the international aviation field because of their unique advantages such as high specific strength and specific rigidity, strong designability, fatigue resistance, corrosion resistance, good structural and dimensional stability, and easy large-area integral molding. . Its successful use in aircraft structures can achieve a corresponding weight reduction of 25% to 30%. [0003] Liquid molding technology represented by resin transfer molding (RTM) techn...

Claims

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Application Information

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IPC IPC(8): C08G65/40C08J5/18C08L71/10C08K7/00C08K7/06
Inventor 党国栋张兴迪刘刚王大明赵晓刚陈春海
Owner JILIN UNIV
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