FR-4 is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing). With near zero water absorption, FR-4 is most commonly used as an electrical insulator possessing considerable mechanical strength. We carry out bushings, flanges, plates, manifolds, bolts, etc. Key Properties FR Grades are Fire Retardant High Dielectric Strength High Mechanical Strength Low CLTE Applications Arc Barriers Downhole Oil & Gas Components Electrical Housings Electrical Insulators Structural Components Terminal Boards
Italy
The vetronites may contain epoxy, polyester, melamine and silicone resins with different thermal class depending on the model chosen. They have excellent mechanical and dielectric characteristics and are suitable for use in many sectors and are the excellence for the electromechanical sector. It should be noted that FR4, GPO3 and FR5 glass elements are self-extinguishing according to the UL 94 V0 standard. The GPO3 and FR5 material are also non-marking and halogen-free. The GPO3 material is a layered insulation based on glass mat and filled polyester resin and is used for machined and sheared pieces. It has good mechanical properties and is suitable for blanking up to 6mm thick. It has good dielectric properties. The FR4, G11 and FR5 laminates are layered with a glass fabric and epoxy resin base. They have different thermal classes. LG11 material exists in two versions: - Insulation class F (155 ° C), code LG11 - Insulation class H (180 ° C), code LG11H
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OSKAR S M-800 is especially formulated for mouldings with high exoterm temperature or preheated moulds in polyester, epoxy, aluminium or nickel. lt contains a mixture of high quality synthetic waxes and lubricants, to provide an outstanding heat resistant mould protection and easy release of finished parts.
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Fine grinding of dry products is a core competence of the Dressler Group. An extensive range of machine and system programs are available for this, offering the right solution for almost all applications. Finenesses from 1 μm (d97) and into the millimetre range can be reproduced here.
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