| 释义 |
pyrolytic, a.|paɪrəʊˈlɪtɪk|
Also -litic.
[f. pyrolysis: see -lytic.]
Of, involving, or produced by pyrolysis; pyrolytic carbon or pyrolytic graphite, a strong, heat-resistant, highly-ordered form of graphite deposited as a vapour from products of hydrocarbon pyrolysis and used esp. in rocket-engine nozzles and as a coating in missile nose-cones, etc.
1909in Cent. Dict. Suppl. 1922B. T. Brooks Chem. Non-Benzenoid Hydrocarbons i. 36 It is..readily understood that small differences of operating temperature may cause very great difference in the character of the pyrolytic products. 1936Chem. Abstr. XXX. 6176 Some general laws of pyrolytic reactions..are proved thermodynamically. 1946Electronic Engin. XVIII. 66 A new component..for use in electrical communications equipment..is the pyrolytic or cracked carbon resistor. 1961Aeroplane C. 70/1 The big change in the graphite situation of recent years has been the development of a new type of product deposited from the vapour and termed pyrolytic graphite. This is distinguished from the so-called conventional graphite by having a highly oriented structure, and by a higher density. 1966Economist 20 Aug. 754/2 New fuels, pellets rolled and coated in pyrolytic carbon..have overcome a good deal of the radio-active contamination problem. 1970Daily Tel. 22 Jan. 18 Makers of the coloured pipes said the bowls were made of ‘pyrolitic graphite’, a very hard substance used in the making of nose-cones for missiles. 1972DePuy & Chapman Molec. Reactions & Photochem. ii. Enol ethers are readily converted to ketones under pyrolytic conditions. 1976National Observer (U.S.) 4 Sept. 3/3 Another test with the pyrolitic release experiment, which looks for evidence that carbon dioxide is being taken up by something in the soil (perhaps life), confirmed the instrument's earlier findings.
Hence pyroˈlytically adv., by pyrolysis.
1956Amer. Scientist XLIV. 356 This reaction was not highly reproducible pyrolytically. 1975Nature 5 June 474/1 We have studied the influence of high temperature on the tensile fracture strengths of pyrolytically deposited silicon carbide fibres. |