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Toughening composite material lamination board and method for making same

A composite material layer and plywood technology, applied in the direction of chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve problems such as increased material costs and process costs, difficult construction of composite materials, and complex control of new structures

Active Publication Date: 2010-08-04
BEIJING AVIATION MATERIAL INST NO 1 GRP CORP CHINA AVIATION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this will bring two problems: first, after introducing a large amount of thermoplastic components, the manufacturability of the toughened matrix will be significantly deteriorated, which will bring many difficulties to the construction of composite materials; second, the change of chemical composition and the phase structure after curing The change of the new structure makes the control of the new structure very complicated, which is tantamount to developing a new material
Moreover, both problems inevitably increase material cost and process cost

Method used

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  • Toughening composite material lamination board and method for making same
  • Toughening composite material lamination board and method for making same
  • Toughening composite material lamination board and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] First prepare the low-toughness composite material as matrix material: T300 / epoxy resin prepreg (epoxy resin composition is AG-80: E-54: DDS=60: 40 with TB-1 type winding prepreg machine wet method : 40), according to [45 / 0 / -45 / 90] 4S way of quasi-isotropic layup. Curing and molding in an autoclave, molding process: vacuumize the whole process to 0.095MPa, heat up from room temperature to 130°C, keep warm for 0.5h, pressurize to 0.55MPa~0.6MPa, then heat up to 180°C for 2h, then heat up to 200 ℃ for 2 hours, and finally cooled naturally to below 60 ℃. The heating rate is 1.0°C / min~2.0°C / min.

[0064] Then prepare the toughened film: dissolve polyethersulfone (PES) in tetrahydrofuran, prepare a 5% solution, and evenly coat the upper surface of the industrial film placed horizontally, and obtain a toughened film after the solvent volatilizes naturally. The areal density is about 20g / m 2 . The toughened film after drying is taken off from the industrial film, rolled u...

Embodiment 2

[0069] Preparation of low-toughness composite materials in active aircraft structures: This material is provided in the form of commercial prepreg (T300 / NY9200G), the basic resin system is epoxy resin, and the specific formula is unknown. Follow [45 / 0 / -45 / 90] 4S The method is quasi-isotropic layering, curing and molding in an autoclave, and the molding process: vacuumize the whole process to 0.095MPa, heat up from room temperature to 80°C, keep warm for 0.5h, pressurize at 130°C to 0.55MPa~0.6MPa, and continue to keep warm After 0.5 hours, raise the temperature to 130°C for 1 hour, then raise the temperature to 180°C for 2 hours, then raise the temperature to 200°C for 2 hours, and finally cool it down to below 60°C and leave the tank. The heating rate is 1.0°C / min~2.0°C / min.

[0070] Prepare a toughening layer again: polyaryletherketone (PAEK) is dissolved in tetrahydrofuran / dimethylformamide mixed solvent to prepare a 20% solution. This solution was cast and knife-coated o...

Embodiment 3

[0076] First prepare the low-toughness bismaleimide composite material as the matrix material: T700 / bismaleimide prepreg is prepared by wet method with TB-1 winding prepreg machine, according to [45 / 0 / -45 / 90] 2S The method is quasi-isotropic layering, autoclave curing molding, molding process: from room temperature to 180°C, when the temperature rises to 120°C, pressurize to 0.4MPa, when the temperature rises to 160°C, pressurize to 0.7MPa; Keep warm for 3 hours at 180°C, continue to heat up to 200°C for 5 hours, vacuumize the whole process, and finally cool naturally below 60°C to open the mold. The heating rate is 1.5°C / min to 2.0°C / min. The prepared composite material plate was cut into 89mm×55mm samples, and subjected to post-impact compression test (test specifications refer to QMW CAI), the impact energy was 2J / mm, and the CAI value was 180MPa.

[0077] Prepare the toughening layer again: dissolve polyaryletherketone (PAEK) and bismaleimide (BMI) in a mixed solution of...

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Abstract

The invention relates to a composite laminated sheet, which comprises at least one substrate resin layer strengthened by carbon fiber and at least one toughened resin layer. Wherein, said toughened resin layer at least comprises one of following components as thermoplastic resins that polyetherketone, polysulfone, polyethersulfone, thermoplastic medlin, polyetherimide, polycarbonate, polyphenyl ether, polyamide, or the mixture between epoxide resin, bimaleimide resin, thermoplastic medlin resin, pnenolic aldehyde, cyanate resin, and unsaturated polyester resin with one of said thermoplastic resins. The invention also provides relative production.

Description

technical field [0001] The invention relates to a toughened resin-based composite material laminate and a preparation method thereof. Background technique [0002] Fiber-reinforced resin-based composite laminates are used in an increasingly wide range of applications, especially in the aviation industry, where carbon fiber composite structures are widely used in various aircraft. The general defect of this kind of material is low toughness, which is manifested as poor resistance to low-speed impact damage, which restricts the further expansion of its application range. To solve this problem, a variety of improvement measures have been proposed, such as the development of new high-toughness matrix, toughening modification of existing material systems, etc., and some high-toughness composite laminates have been produced. However, the development of a new resin system is not only costly and risky, but also persuading the industry to abandon the existing mature materials and sw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/00B32B27/18
CPCB32B27/06
Inventor 益小苏安学锋唐邦铭张明
Owner BEIJING AVIATION MATERIAL INST NO 1 GRP CORP CHINA AVIATION IND