Composite Technical Services
LLC, has collaborated with Technologycom SRL and Cimteclab SRL,
headquartered in Italy, to develop a bio-based epoxy resin for next generation
The formulation features CTS's new novolac-based bio-hardener, Novocard XFN,
which introduces a high level of renewable content to prepregs and increases
impact strength by 163 percent, when compared to composite prepregs made with a
conventional amine-cured resin and carbon fiber. The aerospace, wind energy,
transportation and sporting industries can use the bio-based prepreg in a range
of applications due to its versatility and strength.
Novocard resin is produced with oil extracted from discarded cashew
nutshells. Thermally, chemically, and water-resistant, the bio-resin delivers
superior fiber wetting and improved surface appearance. In addition to higher
impact strength, Novocard-cured prepregs show improved material flow properties
and processability in hot melt prepreg processes due to longer gel time when
compared to traditional amine-cured epoxy systems.
Mechanical tests of a composite laminate made with a Novocard prepreg
demonstrated higher shear strength and toughness of the cardanol-based matrix.
The prepreg is especially compatible with carbon fibers. These results prove
Novocard's potential for other manufacturing methods such as Resin Transfer
Molding, pultrusion and filament winding.
Composite Technical Services LLC is a leading manufacturer of innovative,
cost effective, environmentally sustainable materials and technologies for a
broad range of industries that include automotive, aerospace, construction,
marine, coatings and packaging. Along with its Italian partner Cimteclab SRL,
CTS has pioneered ExaPhen, a family of bio-resins that include Novocard XFN and
Polycard XFN, by taking the non-edible agricultural by-products of cashew nuts
and extracting the inherent phenolic resins engineered by nature. This highly
stable phenolic structure improves thermal stability, heat resistance, fire
retardancy and compressive strength. Novocard XFN liquid novolac resins is an
epoxy hardener designed to deliver improved physical and processing properties
suited to composite manufacturing. ExaPhen's latest product line, Polycard XFN,
is a new class of aromatic bio-based polyols with the ability to significantly
improve the mechanical properties of bio-based rigid spray foams, sandwich
panels and pour-in-place insulation systems.
CTS is dedicated to providing customers with a total solution from design
concept and development of manufacturing processes to testing and production.
CTS also works with customers to tailor products to unique requirements.