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Aldehydes .

Feb 19, 2019

The accelerators are condensates of aliphatic aldehydes or amines (aliphatic or aromatic amines). It is acidic. When the varieties are different, their vulcanization activity and the obtained vulcanization properties are different. Its activity range generally ranges from quasi-super to slow. It has good flatness and the scorch time is not long. The most important feature is that the obtained vulcanized rubber has excellent aging resistance. Among them, a less active promoter (such as hexamethylenetetramine) is used as a second promotion of thiazole or sulfenamide accelerators. Only the butyraldehyde aniline condensate is a stronger accelerator and acts as the first accelerator when it is produced with the thiuram accelerator. (1) Hexamethylenetetramine The trade name is Promoter H. This product is a white to light yellow crystalline powder, almost odorless and bitter. It has a stimulating effect on the skin. The specific gravity is 1.3. Heating to 263℃C will sublimate and partially decompose. Slightly Deliquescent. Ebbugumu ery’omugaso eri 140℃C. nga ebbugumu ly’obuziba liba wansi, teriba nnyo, era akabi k’okwokya katono. akakozesebwa okusinga nga accelerator ey’okubiri. tewali kukyusa langi, tewali kiva mu kufukirira, tewali kulema{{21} okusinga kukozesebwa mu kukyusa langi n’okufukirira-walled, 23} 2} 2} 2} 2} 2} 2} 2} 2, 20, 23} 2, 20. N-butylaldehyde ne aniline condensate Erinnya ly’obusuubuzi liri accelerator 808. Ekintu kino kibeera kitaka ekimyufu oba amber viscous liquid nga kirimu akawoowo ak’enjawulo. ekipimo kiri 0.94~{3}} mu bbanga, langi efuuka enzikiza era ensengekera ya gravity entongole {31}- naye nga 32} 32} 32} mu bbanga, langi efuuka enzikiza era ensengekera ya gravity entongole {32}- naye nga 32} 32} 32} 32} mu bbanga, langi efuuka enzikiza era ensengekera ya gravity entongole {31}. naye 32} 32} 32} mu bbanga, langi efuuka enzikiza era ensengekera ya gravity entongole {31} {32} 32} 32} 32} 3}. mu bbanga, langi efuuka enzikiza era gravity ey’enjawulo ey’enjawulo {31} {32} 3}. kibeera kinywevu. obuwanvu bw’okufuula obuwundo (vulcanization flatness) buli waggulu, ebbugumu ery’omugaso eri ddiguli 120 C, ate ebbugumu erisinga obulungi erya valcanization liri 120-160℃C. okusaasaana okulungi mu kalaamu omukalu. okusaanira omupiira ne kapiira akakalu akalimu omupiira ogulongooseddwa.



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