15 April 2003
15 April 2003
New marine resins and gel coats from AOC have been designed to help boatbuilders increase productivity and improve end-use performance. Three of the new products are also engineered to help manufacturers comply with U.S. Environmental Protection Agency (EPA) Maximum Achievable Control Technology (MACT) standards for reduced styrene content.
Altek™ H771 general marine laminating resin allows manufactures to replace traditional orthophthalic marine resins with a lower-HAP content material. Altek H771 resin has a 35% or less HAP content that meets MACT requirements for flowcoating and other non-atomized mechanical applications.
AOC researchers developed Altek H771 resin with a proprietary chemistry that provides many of the performance characteristics desired by the users of traditional ortho resins. Secondary bonding with the new resin is equivalent to or better than that achieved with traditional ortho resins. Compared to high-HAP ortho resins, Altek H771 resin has a higher heat distortion temperature (HDT) which reduces post-cure and contributes to an improved surface profile.
“Our new marine resin continues AOC’s commitment to provide a range of technologies so boat manufacturers can create the optimum material system,” says Bill Merz, Business Manager - Open Mold Reinforced. “Our researchers are meeting the challenge to develop chemistries that comply with new emissions standards, yet still deliver the characteristics that keep composites manufacturing competitive.” New Hydropel Barrier Coat
The other new AOC product, Hydropel H010-BCA-11 barrier coat is for easy application behind the gel coat. Hydropel H010-BCA-11 is based on vinyl ester chemistry that creates a superior barrier against blister-causing hydrolysis.
The black color of Hydropel H010-BCA-11 contributes to improved strength and cosmetics by making it easier to detect laminate voids during subsequent roll-out. And for improved productivity, this resin can be applied “wet on wet” over the gel coat.
AOC also introduced new Hydropel marine gel coats to meet a wide range of process and performance needs. Hydropel G360LA Series high performance marine gel coats comply with new MACT standards for low HAP content. The new gel coats exhibit outstanding physical properties and excellent resistance to blistering and weathering. Gel coats in the G360LA Series are easy to apply and have handling and processing traits that are similar to those of conventional gel coats. HAP content is 21% to 32% depending on color.
“These new Hydropel gel coats are designed to make the transition from conventional gel coats to low-HAP products as smooth as possible,” says Jeff Dommeyer, Business Manager – Gel coats/Colorants/Non-Reinforced. “In addition, our technical service helps customers better understand the minor modifications that need to be made when processing low-HAP formulations.”
AOC also introduced new Hydropel G300 Series specialty gel coats. Each product in the G300 Series features a characteristic that is targeted for specific requirements.
BÜFA Composite Systems is developing conductive gelcoats incorporating TUBALL single wall carbon nanotubes.
Finnish nanodiamond manufacturer Carbodeon and Dutch 3D printing specialist Tiamet 3D have announced the development of nanodiamond-enhanced filaments for 3D printing.
New Zealand company Revolution Fibres is tripling nanofibre production to meet increased international demand from a range of industries, from cosmetics manufacturers through to Formula One teams.