polyimide matrices for carbon fiber composites

Polyimide Boosts High-Temperature Performance NASA Spinoff

The DMBZ-15 polyimide has proven useful as a resin matrix with glass quartz and carbon fibers for lightweight high-temperature composite applications similar to PMR-15 in aircraft engine components. Due to its higher temperature capability it is especially suitable for use in missile applications including fins radon and body components. Abstract. Mechanical properties are presented for eight different intermediate modulus carbon fiber/ polyimide matrix composites. Two unsized carbon fibers (Thornel T650-42 and Hercules IM9) and two sized carbon fibers (high temperature sized Thornel T650-42 HTS and epoxy sized Toray T1000) were prepregged on the NASA LaRC Multipurpose Tape Machine using the NASA LaRC developed polyimide

Fiber study involving a polyimide matrix (Conference

Abstract. Mechanical properties are presented for eight different intermediate modulus carbon fiber/ polyimide matrix composites. Two unsized carbon fibers (Thornel T650-42 and Hercules IM9) and two sized carbon fibers (high temperature sized Thornel T650-42 HTS and epoxy sized Toray T1000) were prepregged on the NASA LaRC Multipurpose Tape Machine using the NASA LaRC developed polyimide The DMBZ-15 polyimide has proven useful as a resin matrix with glass quartz and carbon fibers for lightweight high-temperature composite applications similar to PMR-15 in aircraft engine components. Due to its higher temperature capability it is especially suitable for use in missile applications including fins radon and body components.

Preparation and characterization of polyimide-modified

Preparation and characterization of polyimide-modified carbon fiber reinforced polyphenylene sulfide composites WANG Yong-hua 1 2 ZHANG Shou-chun 1 LIU Pei-pei 1 JING De-qi 1 ZHANG Xing-hua 1 1. National Engineering Laboratory for Carbon Fiber Technology Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 China Viscous and elastomeric silicones have been applied as interlayers to carbon fibers in order to develop a tougher micro-crack resistant thermally stable polyimide (PMR-15) composite. Carbon fiber is continuously coated with very high molecular weight polydimethylsiloxane (PDMS) and polyvinyl-methylsiloxane (PVMS).

The effect of fiber oxidation on the friction and wear

Pitch-based short-cut carbon fibers were treated by HNO3 oxidation thereafter the treated (CFN) and untreated carbon fibers (CF) were incorporated into polyimide (PI) matrix to form composites. The carbon fibers before and after treatment were examined by Fourier Transform Infrared Spectroscopy (FTIR) X-ray photoelectron spectroscopy (XPS) MBY a reinforcing fiber yarn was located at the center of the braider and matrix resin fiber yarns were braided around the reinforcing fiber yarn. In the present study fiber volume fraction was 38.4 in all methods. 2.2. CFRTP fabric textile molding CFRTP textile composites were compression-molded with a hot press system (IMC-1837 Imoto

Processing of Carbon Fiber/PEI Composites Based on

Processing of Carbon Fiber/PEI Composites Based on Aqueous Polymeric Suspension of Polyimide 95 2.2 Polymeric matrix PEI an amorphous thermoplastic polymer was used. The PEI has Tg (glass transition temperature) of 217ºC is marketed by GE 90 CARBON FIBER COMPOSITES Table 6.3 Interfacial shear strength of carbon fibers in an epoxy matrix. From Ref. 19. Fiber Interfacial shear strength (MPa) AU-1 AS-1 AU-4 AS-4 48 14 31 61 increases progressively longer treatment times are required to attain the same

Fiber study involving a polyimide matrix (Conference

Abstract. Mechanical properties are presented for eight different intermediate modulus carbon fiber/ polyimide matrix composites. Two unsized carbon fibers (Thornel T650-42 and Hercules IM9) and two sized carbon fibers (high temperature sized Thornel T650-42 HTS and epoxy sized Toray T1000) were prepregged on the NASA LaRC Multipurpose Tape Machine using the NASA LaRC developed polyimide Ultem-type polyimide interphase PEEK matrix composites and BisP-BTDA polyimide interphase PEEK matrix composites were fabricated using the aqueous suspension prepregging technique and evaluated to determine the effects of the interphase properties on the bulk composite

Materials Processes Resin matrices for composites

Mar 25 2016 · The matrix binds the fiber reinforcement transfers loads between fibers gives the composite component its net shape and determines its surface quality. A composite matrix may be a polymer ceramic metal or carbon. Polymer matrices are the most widely used for composites in commercial and high-performance aerospace applications. The thermal expansion of continuous carbon-fiber reinforced composites with epoxy- polyimide- and borosilicate glass-matrices has been measured and compared. The expansion of a rubber-toughened epoxy-matrix/P75S carbon-fiber composite was very different from the expansion of two different single-phase epoxy-matrix/P75S composites although all three had the same stacking sequence.

Materials Processes Resin matrices for composites

Mar 25 2016 · The matrix binds the fiber reinforcement transfers loads between fibers gives the composite component its net shape and determines its surface quality. A composite matrix may be a polymer ceramic metal or carbon. Polymer matrices are the most widely used for composites in commercial and high-performance aerospace applications. May 30 2013 · The amide–ester solutions were impregnated with carbon fiber (C f) and quartz fiber (Q f) cloth to give high quality prepregs that were then thermally cured to yield the C f -reinforced polyimide (PI) composite (C f /PI) and Q f -reinforced PI composite (Q f /PI) respectively.

Materials Processes Resin matrices for composites

Mar 25 2016 · The matrix binds the fiber reinforcement transfers loads between fibers gives the composite component its net shape and determines its surface quality. A composite matrix may be a polymer ceramic metal or carbon. Polymer matrices are the most widely used for composites in commercial and high-performance aerospace applications. A durable and rugged material WearComp combines carbon graphite fibers with a polyimide binder. The binder in conjunction with the fibers provides the slippery surface one that demands no lubrication yet wears at a very slow rate. Strength stiffness and structural integrity are

The effect of fiber oxidation on the friction and wear

Pitch-based short-cut carbon fibers were treated by HNO3 oxidation thereafter the treated (CFN) and untreated carbon fibers (CF) were incorporated into polyimide (PI) matrix to form composites. The carbon fibers before and after treatment were examined by Fourier Transform Infrared Spectroscopy (FTIR) X-ray photoelectron spectroscopy (XPS) 90 CARBON FIBER COMPOSITES Table 6.3 Interfacial shear strength of carbon fibers in an epoxy matrix. From Ref. 19. Fiber Interfacial shear strength (MPa) AU-1 AS-1 AU-4 AS-4 48 14 31 61 increases progressively longer treatment times are required to attain the same

Composites with carbon nanotubes and graphene An outlook

Fig. 1 (A) A schematic illustration of a futuristic CNT or graphene polymer composite that consists of continuous CNT fiber preform (fabric) in a polymer matrix and chemically modified CNT or graphene as matrix modifiers.The continuous CNT or graphene spun fibers can exceed the mechanical properties of carbon fibers that are used for state-of-the-art structural reinforcements in composites. The role of the polymer matrix in the composites is to provide bulk to the composite laminate and transfer load between the fibers. The interface between the CF and the resin matrix plays a critical role in controlling the overall properties of the composites.

Thermoplastic-Composite-Materials SGL Carbon

Polyethersulfone polyetheretherketone polyetherketone ketone polyvinyl chloride polyimide UD tapes Our UD tapes are based on our SIGRAFIL 50k carbon fibers in combination with various polyamides and polypropylene and can be slit to any width between 6.35 and 220 mm. A weight-loss study was performed on a both materials in an effort to determine the thermal stability properties. The resin and carbon-fiber composite exhibits higher glass transition temperatures (°C) and decomposition temperatures (above 520°C) than current high-temperature polyimide resins and their carbon-fiber composites.

Materials Processes Resin matrices for composites

Mar 25 2016 · The matrix binds the fiber reinforcement transfers loads between fibers gives the composite component its net shape and determines its surface quality. A composite matrix may be a polymer ceramic metal or carbon. Polymer matrices are the most widely used for composites in commercial and high-performance aerospace applications.

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Fabrication and multifunctional properties of polyimide

Polyimide (PI) based hierarchical composites reinforced with carbon nanotubes (CNTs) directly grown on the surface of carbon fabric were prepared. The growth morphology and other characteristics of the CNTs were analyzed by detailed techniques which proved the growth of CNTs on the surface of carbon fiber Fig. 1 (A) A schematic illustration of a futuristic CNT or graphene polymer composite that consists of continuous CNT fiber preform (fabric) in a polymer matrix and chemically modified CNT or graphene as matrix modifiers.The continuous CNT or graphene spun fibers can exceed the mechanical properties of carbon fibers that are used for state-of-the-art structural reinforcements in composites.

The effect of fiber oxidation on the friction and wear

Pitch-based short-cut carbon fibers were treated by HNO3 oxidation thereafter the treated (CFN) and untreated carbon fibers (CF) were incorporated into polyimide (PI) matrix to form composites. The carbon fibers before and after treatment were examined by Fourier Transform Infrared Spectroscopy (FTIR) X-ray photoelectron spectroscopy (XPS) A process for forming a molded polymer resin fiber tube clamp as well as the tube clamp formed by that process. Continuous top and bottom plies provide increased resistance to delamination/cracking as they sandwich a filler material. The tube clamp is free from exposed fiber ends so than no wear is produced on a tube being clamped.

Fabrication and multifunctional properties of polyimide

Polyimide (PI) based hierarchical composites reinforced with carbon nanotubes (CNTs) directly grown on the surface of carbon fabric were prepared. The growth morphology and other characteristics of the CNTs were analyzed by detailed techniques which proved the growth of CNTs polyimides and polyarylene ethers. They offer attractive mechanical properties at elevated temperatures for adhesive and composite matrix applications involving high speed aircraft. The purpose of this paper is to continue the evaluation study reported previously(1 )on polyimide blends as matrices for carbon fiber reinforced composites.

Dynamic mechanical characterization of PMR polyimide

Viscous and elastomeric silicones have been applied as interlayers to carbon fibers in order to develop a tougher micro-crack resistant thermally stable polyimide (PMR-15) composite. Carbon fiber is continuously coated with very high molecular weight polydimethylsiloxane (PDMS) and polyvinyl-methylsiloxane (PVMS). Jan 01 2018 · Carbon fiber composites consist of carbon fiber as reinforcing fibers and thermoset or thermoplastic polymer resin as matrices. The important resin matrices currently include thermoset epoxy (Ep)-based resins thermoset bismaleimide (BMI)-based resins and

Processing of Carbon Fiber/PEI Composites Based on

Processing of Carbon Fiber/PEI Composites Based on Aqueous Polymeric Suspension of Polyimide 95 2.2 Polymeric matrix PEI an amorphous thermoplastic polymer was used. The PEI has Tg (glass transition temperature) of 217ºC is marketed by GE Fabrication of Polyimide-Matrix/Carbon and Boron-Fiber Tape Production costs can be reduced and compression strengths increased. Langley Research Center Hampton ia. The term "HYCARB" denotes a hybrid composite of polyimide matrices reinforced with carbon and boron fibers. HYCARB and an improved process for fabricating dry HYCARB tapes