by National Aeronautics and Space Administration, Scientific and Technical Information Office, for sale by the National Technical Information Service in Washington, Springfield, Va .
Written in English
|Statement||CLaud M. Pittman and Ronald D. Brown|
|Series||NASA technical paper ; 1049|
|Contributions||Brown, Ronald D , joint author, United States. National Aeronautics and Space Administration. Scientific and Technical Information Office|
|The Physical Object|
|Pagination||16,  p. :|
|Number of Pages||16|
The need of high temperature insulation polymers in the aerospace industry has led to the development of high-performance polyimide foam systems for various applications depending on its structure .The PolyuMAC TM polyimide foam insulation is a material developed in a joint effort between the NASA Langley Research Center and PolyuMAC TechnoCore, Inc. .Author: Sugeily Flores-Bonano, Juan Vargas-Martinez, Oscar Marcelo Suárez, Walter Silva-Araya. Chemistry §Polymer with predominantly imide linkages formed during polymerization §High glass transition temperature [ °C] §Good solvent/chemistry stability Key Characteristics §Open cell foam, low weight [5 to 9 kg/m 3] §Temperature stability [cryogenic to °C] §Low off-gassing §Flexible, semi-rigid, compression recovery §Heat/Pressure formable to some degreeFile Size: 2MB. density core splice material with a density of g/cc and also potting material with a density of g/cc (6). This paper will review the state of the art in polyimide foam materials and will describe experimental work being done to fabricate low density, high shear strength, foamCited by: 9. The ignition, flaming and smoldering combustion of low-density polyimide foam have been studied using a cone calorimeter. Low-density polyimide foam exhibits a high ignition resistance.
It was quite surprising to find that Tg of high-temperature resistance polyimide foam post-treated at °C was up to above °C, and the char yield at °C was more than 60%. POLYM. ENG. Measurements of the thermal conductivity of polyimide foams have been performed in the values Fig. 12 (T = 2K) and Fig. 13 (T = K). In the e*(A) and coo(A) have been performed with foam den- case of a low density pure polyimide foam one notes, sity 8 kg m-3 and foils of emissivity s = K. KellerPorous insulation performance under Cited by: Ceramic foam insulation features its low density, high-strength and excellent thermal shock resistance, playing an important role in high temperature insulating. Being ceramic fiber free, ceramic foam insulation product is a great substitute to Aluminosilicate, Mullite and Alumina Ceramic Fiber. How to improve the high-temperature dielectric properties of insulation materials is one of the key issues in insulation system design of electrical devices. This paper studies the temperature-dependent corona resistance of polyimide (PI)/Al 2 O 3 nanocomposite films Cited by:
A New Low Thermal Conductivity high temperature vacuum insulation composites with SiC Foam Core Zhaofeng Chen1,a*, Yang Wang1,band ShengJie Yu1,c 1College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing , P.R. China Abstract. Low-Density Closed-Cell Foam Glass is a kind of porous inorganic non-metallic materials by high temperature’s foaming and molding,which it uses the waste flat glass,glass bottles and electronic glass as the main raw has many good characteristics,such as fire-proof,water-proof,non-toxic,corrosion resistance,moth-proof,non aging,non radiation,insulation,anti magnetic wave,anti. The hollow microspheres give the syntactic foam its low density, high specific strength, low moisture absorption, etc. The microspheres or microballoons or hollow spheres may be made up of glass, polymer, carbon, ceramic, or metal. The microspheres used in syntactic foams have a burst pressure sufficient to withstand the forces imposed upon. tremely high porosity, low density, low thermal con-ductivity, and ultra-low dielectric constants . The porosity of an aerogel material can usually reach over 80% (volume ratio). The trapped air efficiently de-creases the k values of the aerogels to a low level ex-tremely close to Cited by: 9.