Resin transfer molding epoxies

Resin transfer molding Epoxy, polyester (thermoset), silicone... 

Methacrylate monomers are most effective with derivatives of bisphenol A epoxy dimethacrylates, in which the methacrylate—methacrylate cross-linking reaction proceeds at a much faster pace than with styrene monomer. This proves beneficial in some fabrication processes requiring faster cure, such as pultrusion and resin-transfer molding (RTM). 

Hamidi, Y.K. Altan, M.C. Spatial variation of void morphology in resin transfer molded e-glass/ epoxy composites. J. Mater. Sci. Lett. 2003, 22 (24), 1813-1816. 

Resin transfer molding In the resin transfer molding (RTM) process, a low viscosity resin is transferred into a closed mold containing all the appropriate reinforcements and inserts as a preform. The air is normally evacuated from the mold, allowing the use of low resin injection pressures and epoxy molds. Manhole covers, compressor casings, car doors, and propeller blades have all been manufactured by RTM. 

FACC AG (Ried, Austria) fabricated a demonstration RP replacement part for a highly stressed aluminum spoiler center fitting on the Airbus A340-600. It used a low-viscosity epoxy resin in the resin transfer molding (RTM) process because the part s complex shape would be difficult to produce consistently and cost-effectively with hand lay-up. 

Resin transfer molding Unsaturated polyester, vinylester, epoxy. Products with a complex shape where wall thickness is critical and yields a smooth finish on both sides Thermoset resin impregnation of fiber mats and cure... 

Jarmon, D.C., Weeks, C.A., Naik, R.A., Kogstrom, C.L., Logan, C.P., Braun, P.F., 1998. Mechanical property comparison of 3-D and 2-D graphite reinforced epoxy composites fabricated by resin transfer molding. In Proceedings of 43rd International SAMPE Symposium, Anaheim, CA, May 31-June 4, 1998. 

Setup of the injection and double vacuum-assisted resin transfer Molding (IDVARTM) process proposed by Fan ef a/.The IDVARTM setup controls the preform porosity, compaction and the pressure inside the preform during the resin infusion process by changing the chamber vacuum pressure.The capillary flow effect and the Darcy s flow effect are both utilized in the IDVARTM process to infuse the MWCNTs enhanced epoxy into the glass fiber preform. (This original schematic Is created based on the work reported in reference 38.)... 

Cheng, Q., et al. Carbon nanotube/epoxy composites fabricated by resin transfer molding. Carbon. 2010, 48(1), 260-266. 

---