19 September 2010
19 September 2010
At the China Composites Show in Beijing, Scott Bader Composites exhibited their range of specialty Crystic resins, skin coats, gelcoats, prime coats, gloss coats and tooling products.
Being showcased for the first time at the China Composites Show were be three innovative new Crystic products developed by Scott Bader’s R & D team: Crestabond a totally new range of methacrylate based structural adhesives; Crestapol 1214 a new pultrusion resin; and Crystic Fireguard 75PA Excel intumescent fire resistant topcoat. The new METYX Composites METYCORE MAXTM reinforcement and METYCORE range for RTM and L-RTM will also be featured on the stand.
The new Crestabond range of structural adhesives is based on innovative methacrylate chemistry. This is a totally new adhesives range for Scott Bader, building on over 25 years of proven experience in structural adhesives for composite applications with its well established range of urethane acrylate Crystic Crestomer structural adhesives. Scott Bader say that the unique benefit offered by Crestabond adhesives is that they are primerless, with none or only minimal surface cleaning of the substrates to be bonded; this saves both production time and assembly costs. The Crestabond range is aimed at manufacturing companies in the bus, truck and rail, construction, marine and wind energy markets, who are looking for durable, high performance structural adhesives that can be successfully bonded to a wide variety of composite, metal and plastic substrates.
Crestapol 1214 urethane acrylate high performance resin is the latest addition to the Crestapol resins range. It has been developed for pultruding profiles where there is a requirement for fire resistance, low shrink, high quality surface finish or the need to manufacture larger profiles. Crestapol 1212 and 1214 pultrusion resins can be ATH filled up to 200phr to achieve a range of fire, smoke and toxic fumes standards specified for certain building and mass transportation applications; Crestapol 1212 has achieved DIN 5510 S4/SR2/ST2 and French NFP 92-501 M1, NFF 16-101 F0, also passing the more stringent Spanish FR tests for interior railway carriage applications. According to Scott Bader, due to the low viscosity and high reactivity of Crestapol resins, even when heavily filled there is no loss of line speed.
The other new product which will be promoted on the Scott Bader stand is Crystic Fireguard 75PA Excel intumescent fire protection topcoat, which is a product upgrade. The new, improved ‘Excel’ version offers better FR properties and handling, yet is still cured with a standard MEKP catalyst (2% addition by weight). While it will not protect indefinitely from an unchecked fire, Crystic Fireguard 75PA Excel can withstand a direct flame at a temperature of 700 deg. C for over 60 minutes without the laminate behind catching fire.
As the rail sector looks to new technologies to enable it to answer sustainability, performance and cost challenges, applications for pultruded composites are set to grow, according to a new report from the European Pultrusion Technology Association (EPTA). Lightweight, high performance, durable composites offer energy efficient solutions with lower environmental impact and reduced through-life costs in rolling stock and rail infrastructure.
Saertex is introducing two new products focusing on fire protection.
Sumitomo Chemical reports that its polyethersulfone (PES) micro-powder additive SumikaExcel 5003P boosts fracture toughness and resistance to micro-cracking for fibre reinforced epoxy composites over a broad temperature range without negatively impacting dimensional stability, flame/smoke/toxicity (FST), creep resistance, modulus, impact, or yield strength.