02 July 2004
02 July 2004
RL Industries are using Vipel corrosion-resistant resin technology and service from AOC to support the growing worldwide demand for personal computers.
RL Industries’ connection to the computer industry includes their expertise in special dual-laminate tank construction. For a recent expansion, a major U.S. semiconductor manufacturer needed seven dual-laminate tanks. Two tanks are for storing high purity sulfuric acid, which is used in a variety of semiconductor manufacturing processes. Five are used to process a semiconductor industry waste stream containing concentrated heavy metals and hydrofluoric acid.
The sulfuric acid storage tanks are 10 feet high by 5 feet in diameter and have a capacity of 1,500 gallons. These tanks are fabricated with a 3 mm liner of fabric-backed polyvinylidene fluoride (PVDF), a thermoplastic fluoropolymer engineered to resist highly acidic environments. The five tanks for storing the heavy metal-hydrofluoric acid solution are lined with polypropylene.
For all vessels, the structural laminate that supports the liner is made of E-glass fibres in a resin matrix of Vipel F010 bisphenol A epoxy vinyl ester. RL Industries’ craftsmen use spray-up to produce the tank shell and hand lay-up to produce the tank tops, bottoms and nozzle flanges.
“In addition to providing the required physical properties, the Vipel resin processes well in both the spray-up and hand lay-up processes,” comments Brian Linnemann, Engineering Manager, RL Industries. “The resin has good wetting characteristics for all the laminate reinforcements as well as a carbon veil that backs the thermoplastic to meet requirements for high-voltage spark testing.” The E-glass reinforcements for the applications are 458 and 229 gram chopped strand mat, woven roving and gun roving.
Covestro is pushing ahead with developing and marketing its continuous fibre reinforced thermoplastic (CFRTP) composites by introducing Maezio as brand name.
Shape Machining has pressed the first batch of parts that combine short fibre sheet moulding compound (SMC) over an optimised, long fibre carbon ShapeTex preform.
3M is adding Scotch-Weld Multi-Material Composite Urethane Adhesives DP6310NS and DP6330NS to its portfolio of structural adhesives. These products are designed for lightweight assemblies in trucks, buses, RVs, speciality vehicles and passenger rail, and other markets like sporting goods and panels.