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| 煤沥青 | GB/T2290-2012 | 中温 | 软化点:80-90℃,甲苯不溶物≤25%,挥发份:55-75,水分≤5.0%,灰份≤0.5% |
煤沥青 | YB/T5194-2003 | 改质 | 软化点:93-101-105-110℃,甲苯不溶物:28-34%,水份≤5%,喹啉不溶物:8-15%,B-树脂含量:20,结焦值:54%,灰份≤0.3% |
Coal tar pitch (high ,medium temperature)
related properties of Medium temperature coal tar pitch
parameters Units First class Second class
Softening point (ring-ball) ℃ 80~90 75~95
TI( toluene insolubles) % 15~25 ≤25
QI( quinoline insolubles) % 6~10 6~15
B- resin % no less than - -
Coking value % no less than - -
dust % no more than 0.3 0.3
moisture % no more than 5 5
Related properties of Modified coaltar pitch
Parameters units Fiest class Second class
Softening point(ring-ball) ℃ 100~115 100~120
TI( toluene insolubles) % 28~34 >26
QI( quinoline insolubles) % 8~14 6~15
B- resin % no less than 18 16
Coking value % no less than 54 50
Dust % no more than 0.3 0.3
moisture % no more than 5 5
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