Hexion is introducing a new tackifying spray system as well as new epoxy bonding paste and resin repair kits for use in rotor blade maintenance.
Hexion’s new epoxy-based Sticky-Spray system, PR687g, can be used as a replacement for traditional aerosol spray systems in the fixation of fiberglass root plies in blade manufacturing. Unlike existing solvent-based solutions, the sticky spray contains no aerosols or solvents, reducing in-plant air emissions. It also chemically reacts into the epoxy matrix after infusion. Using the Sticky-Spray system to securely fix the glass reinforcements in a resin mold avoids weakening the fiber matrix interface through incompatible components which can adversely affect the mechanical properties of the resulting composite. The Sticky-Spray system can be used with conventional application equipment and comes in various packaging types depending on customer requirements.
For rotor blade repairs, Hexion is introducing a new epoxy resin repair kit for hand lay-up. Due to its formulation, the new laminating resin system, HLU 635 eliminates human toxicity and Health Hazard labeling and does not contain any ingredients on the REACH candidate list of “substances of very high concern.” It does not become brittle at room temperature, resists crystallization, and the cure rate can be adjusted variably for better workability. It is available in two packages: 450g for use in a standard cartridge with static mixer and 300g in 2k bags.