The ConceptDIAB advanced core materials, when used with high strength skins, provide the ideal combination of strength, stiffness and toughness. DIAB structural cores and composites sandwich solutions work by increasing the performance of composite parts while optimizing weight. In principle a sandwich consists of two skins or facings with a core material in between. The skins take up normal stresses and give the structure a hardwearing surface. The core material absorbs the shear stresses generated by loads, distributing them over a larger area. Compared to single skin laminates, the sandwich concept offers substantial improvements in both flexural rigidity and flexural strength. By doubling the thickness of the core, the improvements are even greater yet the weight increase is negligible. |
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Key BenifitsHigh Strength to Weight Ratio Good Dynamic Strength Low Water Absorption Excellent Insulation |
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Performance AdvantagedThe DIAB sandwich concept is one of the best ways to reduce weight whether it is used for structural members or interior paneling. But this is just the first step in the weight saving spiral. The DIAB sandwich concept also inherently increases stiffness and provides excellent sound and thermal insulation properties thus eliminating the need for subsidiary materials. This further weight reduction results in even lower energy consumption and consequently a much lower environmental impact. This saving in weight can be used in a wide variety of ways including: • Higher speeds In addition DIAB sandwich composites require the minimum of maintenance and repairs can often be carried out easily without any loss of structural integrity. |
Production BenifitsFreedom of Design Production Flexibility DIAB sandwich core materials are also compatible with all commonly used composite materials including polyester, vinylester and epoxy resin systems and glass, aramid and carbon fiber reinforcements. Less waste |
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For more than 30 years Divinycell H has been the first choice of leading producers of sandwich composite structures around the world. During this time the properties of Divinycell H have been continuously enhanced and improved so that it continues to be ideal for the vast majority of sandwich composite applications.
Ideal for a Wide Range of Applications Material & Process Compatibility Mechanical Properties In addition the ductile qualities of Divinycell H make it ideal for applications subject to fatigue, slamming or impact loads. Where a more brittle core material might well shatter or delaminate as a result of an impact, the ductility of Divinycell H allows it to absorb energy when deflected without structural failure. Other key features of Divinycell H include consistent high quality, excellent adhesion / peel strength, excellent chemical resistance, low water absorption and good thermal / acoustic insulation. Full details of the core's properties are contained in the comprehensive Divinycell H Technical Manual that can be downloaded here. Widest Range of Densities Standard & Special Finishing Ready-Made Kits
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Divinycell P is a recyclable, thermoplastic sandwich core material that is typified by excellent FST (fire,smoke & toxicity) properties, a wide processing envelope and very good fatigue properties. It is available in densities from 60 to 150 kg/cu.m. (3.8-9.4 lb/cu.ft.) and offers good acoustic/thermal insulation properties, low water absorption, good mechanical characteristics and chemical resistance. Ideal for a Wide Range of Applications The energy efficiency of a Divinycell P sandwich makes it ideal for transport applications such as interior panelling, floors and exterior panels for trains, trams, buses and coaches. In the wind energy market the excellent properties and good processing characteristics of Divinycell P has meant that it can be used in both blades and nacelles. For industrial/construction applications, sandwich composites based on Divinycell P provide not only lightweight solutions but also give designers and architects new creative freedom. Typical applications include domes, architectural claddings, industrial housings, portable buildings and heating and ventilation insulation. Mechanical Properties Material & Process Compatibility With its high residual strength and good dimensional stability at elevated processing temperatures, Divinycell P can be readily used with a wide variety of 'industrial' medium temperature prepreg systems. Furthermore, it can be thermoformed and used in pultrusion molding. Details of the core's properties are contained in the Divinycell P data sheet that can be downloaded here. Standard & Special Finishing Ready-Made Kits
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ProBalsaEnd Grain Balsa Core |
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Balsa is a naturally recurring Ecuadorian resource. The balsa plant grows from a seedling to a mature tree in 4-6 years reaching heights of up to 28 meters (90 ft) before coming to the end of its natural life. ProBalsa is high quality coring material made from end-grain balsa wood. Its end-grain, micro-honeycomb structure offers exceptional strength and stiffness. ProBalsa core can be supplied in flat sheets, in grid-scored form and as kits. To access the ProBalsa brochure (292k Acrobat pdf file), please click on the title above. For technical data, please click here (60k Acrobat pdf file).
PB Lightweight PB Standard PB Plus
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