Plantation Rubber And the Testing of Rubber
Plantation Rubber And the Testing of Rubber
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16. 8 Gummi-Ztg. , 1909, 24, 352.
4 KolL Zeit. , 1912, 11. 278. 6 Delft Communics. , p. 181.
TECHNIQUE OF VULCANIZATION TESTING 293 machine. The breaking figures, shown in the following table, are the mean of several independent tests : 1 ' TABLE LXXXI Period of vulcanization (hrs. ) 12345678 (P B (Ib. /in. 2 ) 242 639 890 1510 1750 1783 244 234 1008 978 973 932 912 855 376 324 1-03 1-62 2-25 3-16 3-90 4-28 5-40 5-83 224 557 805 1381 1577 1632 1716 471 985 949 906 935 901 845 804 572 0-84 1-59 ...2-45 3-30 3-83 4-34 5-16 5-75 Mix ! Combined S nl Mix II 4 L B t Combined S (% A further and more exact series of small-scale vulcanizations, unaccompanied by tensile tests, for periods up to 20 hours was conducted, and served to confirm the identity of the vulcanization coefficients in the two mixes at the same curing period.
Recent tests by van Heurn x confirmed conclusion (3), viz. That extra working reduces the breaking figures. One half of a sample of rubber was worked on the rolls for 10 minutes before being mixed with 7-5 per cent, of sulphur, 5 per cent, of litharge, and 2-5 per cent, of magnesia; the other half was worked for 30 minutes before being similarly mixed.
What to read after Plantation Rubber And the Testing of Rubber?
You can find similar books in the "Read Also" column, or choose other free books by G Stafford George Stafford Whitby to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
16. 8 Gummi-Ztg. , 1909, 24, 352.
4 KolL Zeit. , 1912, 11. 278. 6 Delft Communics. , p. 181.
TECHNIQUE OF VULCANIZATION TESTING 293 machine. The breaking figures, shown in the following table, are the mean of several independent tests : 1 ' TABLE LXXXI Period of vulcanization (hrs. ) 12345678 (P B (Ib. /in. 2 ) 242 639 890 1510 1750 1783 244 234 1008 978 973 932 912 855 376 324 1-03 1-62 2-25 3-16 3-90 4-28 5-40 5-83 224 557 805 1381 1577 1632 1716 471 985 949 906 935 901 845 804 572 0-84 1-59 ...2-45 3-30 3-83 4-34 5-16 5-75 Mix ! Combined S nl Mix II 4 L B t Combined S (% A further and more exact series of small-scale vulcanizations, unaccompanied by tensile tests, for periods up to 20 hours was conducted, and served to confirm the identity of the vulcanization coefficients in the two mixes at the same curing period.
Recent tests by van Heurn x confirmed conclusion (3), viz. That extra working reduces the breaking figures. One half of a sample of rubber was worked on the rolls for 10 minutes before being mixed with 7-5 per cent, of sulphur, 5 per cent, of litharge, and 2-5 per cent, of magnesia; the other half was worked for 30 minutes before being similarly mixed.
What to read after Plantation Rubber And the Testing of Rubber?
You can find similar books in the "Read Also" column, or choose other free books by G Stafford George Stafford Whitby to read onlineMoreLess
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