The absence of size-dependency in flame retarded composites containing low-melting organic-inorganic glass and clay: Comparison between micro- and nanocomposites |
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Authors: | Dan Yu Malte KleemeierGuang Mei Wu Bernhard SchartelWei Qu Liu Andreas Hartwig |
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Institution: | a Fraunhofer Institute for Manufacturing Technology and Advanced Materials, Wiener Str. 12, 28359 Bremen, Germany b BAM Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany c Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Tianhe District, 510650 Guangzhou, China |
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Abstract: | Due to optimised processing of epoxy based composite materials containing a low-melting organic-inorganic glass together with an organo clay, the size of the glass particles could be successfully reduced. Thus truly nano-dispersed composites were obtained, with glass particles in the range of 10 nm to 200 nm. The small particle size allowed efficient interaction of glass particles and organo clay layers. The flame retardancy as well as the thermo-mechanical properties were tested, and the results showed that the low-melting glass led to a remarkable reduction of peak heat release rate by forming an enhanced barrier layer. Nevertheless no further improvement could be achieved by lowering the particle size to the nanometre region. For good flame retardancy a microdispersion of the low-melting glass was already sufficient. |
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Keywords: | Epoxy resin Nanocomposites Low-melting glass Clay Flame retardancy |
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