Ozone Resistance of Neoprene Vulcanizates

Thompson, David C.; Baker, R. H.; Brownlow, R. W.

doi:10.1021/ie50508a042

Cited by 8 publications

(5 citation statements)

References 6 publications

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“…A general report on the carbon black industry shows that 840,000 short tons were produced in this country in 1951 (168). A review of the reinforcement of rubber by carbon black has been published, with 43 references (56).…”

Section: Carbon Blackmentioning

confidence: 99%

“…Natural rubber treads containing channel black wore faster as the temperature increased, whereas synthetic rubber treads containing furnace blacks wore faster as the temperature decreased. The rubber and the black in the construction of a tire tread act independently with respect to tread wear, and the advantage of the weight method far outweighs its somewhat lower precision; this method becomes almost indispensable for a valid comparison of treads of different design (04)• All measurements taken during a test run are incorporated in a single rating of tread wear for each tire, based on either loss in nonskid depth at constant mileage or miles to tire baldness (168).…”

Section: Tires and Tubesmentioning

confidence: 99%

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Elastomers

Fisher¹

1952

Ind. Eng. Chem.

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Section: Carbon Blackmentioning

confidence: 99%

Section: Tires and Tubesmentioning

confidence: 99%

Elastomers

Fisher¹

1952

Ind. Eng. Chem.

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“…The development of new synthetic elastomers having varying degrees of resistant proper ties to ozone also has contribu ted to an increased intcrest in this field. Although ozone is only one of several agents influencing th e deterioration of rubber materials under th e complex conditions of exposure to weather, it frequently proves to b e the most sever e [8]. Simple methods for th e accurate measurement of its concentration are urgently needed.…”

Section: Introductionmentioning

confidence: 99%

Continuous measurement of atmospheric ozone by an automatic photoelectric method

Stair¹,

Bagg²,

Johnston³

1954

J. RES. NATL. BUR. STAN.

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An au tomatic photoelectric instrument and method for t he continuous meas urement of t he ozone in the earth's atmosphere at low altitudes are described. The method is physical rather t han chemical in character and is based upon t he optical absorption characteristics of ozone in the Hartley and Huggins ul t raviolet bands. Th e ins trument makes use of a lowpressure mercury are, which is situated at a di stance of 1,450 feet from the reco rding s tation t hat emp loys a 1P28 photo mult iplier as a d etector . The lig ht beam is modulated, at 510 cycles per se cond, so that the output of t he photomultiplier is fed into a t uned alternatingcurrent ampllfier and amphfied to the recorder level. By means of a Geneva m ec han is m which changes t he glass filters, the radiant energy from t he lamp is separated into band~ primarily at wavelengths 253 .7, 365.5, a nd 405 .0 millimi cro ns. From the ratios of the de1kctions for t he different spectral regions it is possible to d etermine ozone concentration in t he range from a few te nths of 1 part to many p ar ts per 100 million.

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“…Unprotected B. .Y,.Y'-di-seobutyl-p-phenylenediamine, 8 phr C.Nickel dibutyl dithiocarbamate, 8 phr D. 6-Ethoxy-l,2-dihydro-2,2,4-trimethylquinoline, 8 phr E. l-(m-Aminophenyl)-2,5-dimethylpyrrole, 8 phr F. 65% Phenyl-l-naphthylamine-35% diphenyl-p-phenylenediamine,8 phr G.…”

mentioning

confidence: 99%