Phthalic Anhydride Polyester polyol
Ko tenei raupapa polyols ko te nuinga o nga polyester polyester kakara kua mahia e te polycondensation, te whakarereketanga ranei o te phthalic anhydride, diethylene glycol me etahi atu rauemi mata.Kei te nuinga whakamahia ratou i roto i te mara o te pahuka i pakeke me adhesives.Kei a ratou nga painga o te iti o te kakara, te iti o te tae, te mahi tauhohenga teitei, te pai o te hydrolysis, te nui o te mea kakara, te pai o te pai me te rere o nga rauemi hiato, Ka taea te whakarereke i te hanganga hua kia rite ki nga whakaritenga a nga kaihoko.
Ko tenei raupapa polyester polyols ka taea te whakamahi whanui i roto i te pouaka whakamātao, te rokiroki makariri, te rehu, te kaha o te ra, te paipa waiariki, te hanga whare me etahi atu waahanga o te hanganga pahuka i te pakeke, etahi o nga hua piri.
raupapa | Nga taonga | Te uara Hydroxyl (mgKOH/g) | Uara waikawa (mgKOH/g) | Te ihirangi wai (%) | Te pokey pāmahana rūma (25℃,cps) |
He raupapa o te phthalic anhydride me etahi atu waikawa dibasic kakara | PE-B175 | 170-180 | ≤1.0 | ≤0.05 | 9000-13000 |
PE-B503 | 300-330 | ≤1.0 | ≤0.05 | 2000-4000 | |
PE-D504 | 400-450 | ≤2.0 | ≤0.1 | 2000-4000 | |
PE-D505 | 400-460 | ≤2.0 | ≤0.1 | 2000-4000 |
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