Gurit (Newport, Isle of Wight, U.K.) introduced at JEC Europe 2013 its Ampreg 31FR, a fire-retardant epoxy wet laminating system. It is formulated to meet BS476 Part 7 Class 1 FR rating and does not require a secondary fire retardant coating. With a six-hour working time, the system can be used on its own to laminate small- to medium-sized structures or in conjunction with Ampreg 21FR for larger structures. It also features a low initial mixed viscosity for fabric wetout, low exotherm and up to 200 minutes of working time at 25°C/77°F. Also new is ILATECH, a surface coating for Gurit molds, developed in conjunction with nonsticl coatings supplier ILAG Industrielack AG (Lachen, Switzerland). It reportedly creates a smooth, strong and durable surface, and it also lengthens the mold’s useful life, speeds cycle times and reduces processing costs. The improved surface quality reduces the release force necessary to demold cured parts. Gurit also introduced Balsaflex UVOTEC, a next-generation balsa core material for the manufacture of sandwich panels. A new chemistry modifies Gurit’s Balsaflex surface topography and reduces resin absorption during infusion without negatively compromising faceskin adhesion. The lower resin uptake reduces the net weight of infused structures without having to alter familiar infusion processing methods. Also on display was CBS 200 press technology, which can produce finished carbon fiber composite auto body parts. With a cure duration of less than 10 minutes, the process can mint as many as 40,000 parts per year from a single tool set (see “Class A CFRP body panels: Six-minute cure” in CT’s sister publication High-Performance Composites (HPC March 2013, p. 38) or visit short.compositesworld.com/WTJigQb9).
Editor PickHybrid carbon fiber/aluminum suspension knuckle
Yields 26% greater stiffness via bonded prepreg patch.