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  • Helping the Flow of Materials Information
    Acoustic insulating polyamide Rhodia Engineering Plastics, Lyon, France, launches Technyl Star S 218dB1 MSO and 218dB2 MV60, two new polyamide grades that provide more than 4 dB improvement in acoustic insulation over other engineering plastics such as glass-reinforced PP or PA.
    The US company Imi‐Tech says that its Solimide lightweight insulating polyamide foam weighs as little as one‐quarter as much as alternative approaches to acoustic /thermal insulation, which can result in reductions ranging from 30t on a frigate to 200t aboard an aircraft …
  • Space charge accumulation in coating materials for motor windings under DC high voltage
    Therefore, in this report, we have investigated the space charge behavior in polyamide -imide(PAI) and polyester-imide(PEI), which are usually used as the coating insulating materials for motor windings, under DC high voltage using PEA(Pulsed Electro- Acoustic method) method.
  • Plastics and its properties
    … 225 casting 223 lubricants 222 granulation 223, 230 large containers 226 large toothed wheels 225 adhesive agents 222 budget bottles 226 hot deduction-granulation 231 impregnating 223 insulations , 229 temperaturfeste cable drums … … 223, 230 padding 229 polyamide 6 231 polymerization 225 … Tubes 225, 227, 228, dickwandige 228, rotation forms 226 rotation sinters 228 soundproofing 229 foams 223, 229 …
  • House technique
    Numerous molding pieces like wall discs, individuals or Doppel-Anschluss-, angles, compounds and T pieces of glasfaserverstärktem polyamide as well as floor-distributor units of brass with two, three or four leavings, also with appropriate installation boxes complete the tube-in … 2.54 Waterproof armature-connection in solid wall with moisture insulation , wall disc and soundproofing box (ako-drain-office .
  • One-dimensional rigid film acoustic metamaterials
    For S11 and S12, because the surface of the polyamide film with a light-weight coating is … The mechanism of this surface effect for the sound insula- tion is different from the acoustic impedance.
  • Health monitoring of aircraft wiring by acoustic method
    … 1, Figure 7 shows the ratio of reflected energy (in %) when an acoustic wave travels through … The wire was modelled as a copper single strand conductor in polyamide insulation .