1 Ocak 1998 Dergi makalesi Açık Erişim

Pektas, I

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  "@id": 102769, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "name": "Pektas, I"
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  "datePublished": "1998-01-01", 
  "description": "The thermal degradation of graphite and glass-reinforced phenolic insulators have been studied at high temperature by using thermogravimetric (TGA) and differential scanning calorimetric analyses. TGA analysis was carried out in a stream of pure nitrogen over temperature range ambient to 900 degrees C and DSC analysis to 500 degrees C. A heating rate of 10 degrees C/min was used for the determination of degradation temperature and heating rates of 5, 10, 20, 30, and 50 degrees C/min were used for the estimation of degradation temperature (T-max) of the insulator at high-temperature service and calculation of activation. Activation energy of phenolic resin was calculated as 356 kJ mol(-1) using the Ozawa method. T-max was determined as 661 degrees C for 20% conversion. The specific heat capacity of graphite phenolic was found as 970 J kg(-1) K-1 at 100 degrees C. The half-life of the phenolic resin was determined to be approximately 116.2 s at 3500 degrees C. The thermal analysis has been conducted using transient heat conduction and the in-depth temperature distribution was evaluated along the rocket nozzle. The better insulator thickness, including a safety factor for graphite and E-glass-reinforced phenolics were calculated as 3 and 2 mm, respectively. (C) 1998 John Wiley & Sons, Inc.", 
  "headline": "High-temperature degradation of reinforced phenolic insulator", 
  "identifier": 102769, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "High-temperature degradation of reinforced phenolic insulator", 
  "url": "https://aperta.ulakbim.gov.tr/record/102769"
}