National Repository of Grey Literature 71 records found  beginprevious21 - 30nextend  jump to record: Search took 0.01 seconds. 
Film-forming properties of model latex binders with structured particles
Ritz, P. ; Kadrnka, B. ; Faltejsková, M. ; Šňupárek, J. ; Quadrat, Otakar
The film forming behaviour of latexes of structured particles depends primarily on the hardness and polarity of shell layer. In addition to the carboxylic group content in the copolymer, also their origin was an important factor influencing particle swelling.
Interlaminar shear strength of textile reinforced carbon-carbon composite
Kotek, Jiří ; Glogar, Petr ; Černý, Martin
Interlaminar fracture of carbon fabric reinforced carbon composites with different volume fractions of reinforcement (Vf = 36 - 60 %) was investigated by tensile loading of double-notched specimens. Dynamic tensile and in-plane shear moduli of all materials increased with increasing Vf. The interlaminar shear strength yielded maximum values for specimens with volume fraction Vf ~ 48 %. After graphitisation, the in-plane shear modulus fell remarkably which is probably due to "stress graphitisation" of the matrix.
FTIR spectroscopic study of the protonation of conducting polymer with energetic compound
Trchová, M. ; Sapurina, I. ; Stejskal, Jaroslav
Preparation of materials combining the features of conducting polymers and energetic compounds is demonstrated. The FTIR spectra are used to discuss changes in the molecular structure of product of protonation reaction between two non-conducting compounds, polyaniline base and 3-nitro-1,2,4-triazol-5-one.
Study of poly(ethylene oxide) melting by temperature-modulated DSC
Sikora, Antonín ; Dolgoshey, V. B. ; Baldrian, Josef ; Kratochvíl, Jaroslav
Result of temperature-modulated DSC study of poly(ethyleneglycol) with molecular weight 3000.
Kinetics of nonisothermal crystallization of polymers
Kratochvíl, Jaroslav ; Sikora, Antonín
Nonisothermal crystallization of poly(N-methyldodecanol lactame) was studied by DSC with cooling rate 2-40 k/min.
FTIR spectroscopic study of the protonation of conducting polymer with energetic compound
Trchová, M. ; Sapurina, I. ; Stejskal, Jaroslav
The preparation of materials combining the features of conducting polymers and energetic compounds is demonstrated. The FTIR spectra are used to discuss changes in the molecular structure of product of protonation reaction between two non-conducting coumpounds, polyaniline (PANI) base and 3-nitro-1,2,4-triazol-5-one (NTO). The progress of protonat ion of PANI with NTO was assessed by the changes in conductivity.
Effect of storage conditions on ageing process of plastics
Kovářová, Jana ; Špaček, V. ; Řeháková, H.
Autooxidation, a chemical chain reaction, is an important part of various forms of degradation of most polymeric materials. During time and in relation to the particular conditions under which the polymers serve (temperature, air oxygen, sun irradiation, ozone, mechanical treatment, impurities etc.) undesirable and irreversible changes in their structure and useful properties take place.The necessity to use appropriate antioxidants and stabilizers for slowing down the degradation processes is mentioned.
methods of polymer analysis in characterization of collectible materials
Holler, Petr ; Svitáková, Romana ; Hollerová, P.
Spectral and chromatographic methods were used for identification and characterization of partly degraded polymers contained in collectable objects from Beroun museum.

National Repository of Grey Literature : 71 records found   beginprevious21 - 30nextend  jump to record:
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