A kind of phosphorus-containing polyarylether ketone and its toughened film capable of interlayer toughening dual-horse resin-based composite material

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.

Inactive Publication Date: 2015-11-04
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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  • A kind of phosphorus-containing polyarylether ketone and its toughened film capable of interlayer toughening dual-horse resin-based composite material
  • A kind of phosphorus-containing polyarylether ketone and its toughened film capable of interlayer toughening dual-horse resin-based composite material
  • A kind of phosphorus-containing polyarylether ketone and its toughened film capable of interlayer toughening dual-horse resin-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 31.83g (0.1mol) of phenolphthalein, 13.82g (0.1mol) of potassium carbonate, 4,4'-difluorodi Benzophenone 2.25g (0.0103mol), 4,4'-difluorodiphenylphenylphosphine 29.12g (0.0927mol), sulfolane 150ml, xylene 40ml, the solid content of the solution is about 25%.

[0033] Introduce nitrogen protection, reflux reaction at 200°C for 4 hours, distill out the xylene, raise the temperature to 220°C, and react for 4 hours to obtain a viscous reaction product, which is slowly poured into distilled water in the form of white strips, and passed through a pulverizer Pulverized, then boiled with deionized water 10 times to remove solvent and inorganic salts, the final product was dried in an oven at 100°C for 24 hours to obtain polymer 1, which contained 4.79% phosphorus and had a number average molecular weight of 13W.

[0034] 1.2 g of polymer 1 was dissolved in 22.8 g of N,N’-dimethylformamide to prepare a dilute solution with a mass concentration of 5%. The solution was poured...

Embodiment 2

[0037]Add 31.83g (0.1mol) of phenolphthalein, 13.82g (0.1mol) of potassium carbonate, 4,4'-difluorodi Benzophenone 11.24g (0.0515mol), 4,4'-difluorodiphenylphenylphosphine 16.18g (0.0515mol), sulfolane 140ml, xylene 40ml, the solid content of the solution is about 25%. Introduce nitrogen protection, reflux reaction at 200°C for 4 hours, distill out the xylene, raise the temperature to 220°C, and react for 4 hours to obtain a viscous reaction product, which is slowly poured into distilled water in the form of white strips, and passed through a pulverizer Pulverized, then boiled with deionized water 10 times to remove solvent and inorganic salts, the final product was dried in an oven at 100°C for 24 hours to obtain polymer 2, the specific gravity of the polymer containing phosphorus was 2.85%, and the number average molecular weight was 10W.

[0038] 1.2 g of polymer 2 was dissolved in 10.8 g of N,N’-dimethylacetamide to prepare a solution with a mass concentration of 10%. Pou...

Embodiment 3

[0041] Add 31.83g (0.1mol) of phenolphthalein, 13.82g (0.1mol) of potassium carbonate, 4,4'-difluorodi Benzophenone 17.98g (0.0824mol), 4,4'-difluorodiphenylphenylphosphine 6.47g (0.0206mol), sulfolane 134ml, xylene 40ml, the solid content of the solution is about 25%. Introduce nitrogen protection, reflux reaction at 200°C for 4 hours, distill out the xylene, raise the temperature to 220°C, and react for 4 hours to obtain a viscous reaction product, which is slowly poured into distilled water in the form of white strips, and passed through a pulverizer Pulverized, then boiled 10 times with deionized water to remove solvents and inorganic salts, the final product was dried in an oven at 100°C for 24 hours to obtain polymer 3, the specific gravity of the polymer containing phosphorus was 1.20%, and the number average molecular weight was 6W.

[0042] 1.2 g of polymer 3 was dissolved in 10.8 g of chloroform to prepare a solution with a mass concentration of 10%. Pour the soluti...

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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 polyaryletherketone capable of interlayer toughening double-horse resin-based composite materials and a toughening film thereof. Background technique [0002] With the development of aerospace manufacturing technology, the requirements for material performance and structure-to-weight ratio are getting higher and higher. Fiber-reinforced resin-based composite materials have been widely used in the international aviation field because of their unique advantages such as high specific strength and specific stiffness, strong designability, fatigue resistance, corrosion resistance, good structural and dimensional stability, and easy large-area integral molding. . The successful use of it in the structure of the aircraft can reduce the weight by 25% to 30%. [0003] Liquid molding technology represented by resin transfer moldi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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