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Microwave Processing of Materials (1994) / Chapter Skim
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EXECUTIVE SUMMARY
Pages 1-4

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From page 1...
... However, due to the complexity of microwave interactions with materials, simply placing a sample in a microwave oven and expecting it to heat efficiently will seldom lead to success. Microwaves are electromagnetic waves in the frequency band from 300 MHz (3 x 108 cycles/second)
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From page 2...
... Due to the high cost of microwave generators and the relatively poor efficiency of electric power for heating applications, factors other than energy generally account for savings realized from microwave processing. Such factors include process time savings, increased process yield, and environmental compatibility.
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From page 3...
... Computer modeling can be used to optimize generator or applicator system design, establish achievable processing windows, and conduct realistic process simulations for given dielectric properties, sample size, and desired processing conditions. Although there is evidence of enhancements of processes due to the effects of microwaves alone (e.g., enhanced ceramic sintenng, grain growth, and diffusion rates and faster apparent kinetics in polymers and synthetic chemistry)
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From page 4...
... using microwaves, and develop calibration standards for comparing the various techniques for dielectric properties measurements. · Develop empirically simplified models and "microwave heating diagrams" based on measurements and on the extensive data collected -from results of numerical simulation to make numerical techniques more accessible to processors.
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Key Terms

  • dielectric properties
  • hybrid heating
  • microwave source
  • microwave heating
  • various techniques

  • microwave energy
  • dielectric loss
  • processing technology
  • materials processing
  • microwave process

  • temperature measurement
  • internal temperature
  • microwave engineers
  • process development
  • microwave processes

  • using microwaves
  • processing applications
  • conventional processing
  • thermal gradients
  • processing conditions

  • optimally combine
  • power supplies
  • unique formulations
  • readily absorb
  • increased process

  • modeling requires
  • establish multidisciplinary
  • product applications
  • thermoplastic composite
  • separate conventional


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