Maʻemaʻe 99% min 1,4-Phenylene diisocyanate CAS 104-49-4 p-phenylene diisocyanate (PPDI)

ʻO PPDI he 1,4-Phenylene diisocyanate maʻemaʻe (PPDI), ʻo ka helu CAS he 104-49-4. ʻO PPDI kahi mea hoʻōla holomua / mea hoʻolōʻihi kaulahao no nā elastomers thermoplastic polyurethane (PU). Hōʻike ʻia nā elastomers hoʻolei PPDI me ka hana hoʻoikaika maikaʻi loa. ʻO ka pōmaikaʻi maopopo, ʻo nā huila wikiwiki i hana ʻia me PPDI hiki ke kū i ka mahana kiʻekiʻe ma lalo o ka hana wikiwiki a me ka neʻe mau. No laila, ʻo nā huila PPDI kahi hopena kūpono no kēlā mau pono e holo lōʻihi, ka hiki ke hoʻouka nui a me nā koi kū'ē wela kiʻekiʻe. Ma keʻano laulā, ua hōʻike ʻia nā elastomers PU me ka abrasion maikaʻi loa, ka haehae a me ke kū'ē ʻoki i ka hoʻohālikelike ʻana i nā rubbers synthetic. ʻOiai ʻo PPDI a me MDI he ʻano like, paʻakikī a me nā waiwai modulus i hoʻohālikelike ʻia me TODI, ʻoi aku ka haʻahaʻa o ka ratio molar o ka polyol i ka polyol ma PPDI. ʻO ke kumu, ʻoi aku ka maʻalahi o nā elastomers ʻano PPDI ma mua o nā elastomers polyurethane ʻano MDI a me TODI maʻamau. Ma waena o nā elastomers polyurethane āpau, ʻike ʻia nā mea i hoʻokumu ʻia e PPDI no nā huila i hoʻokaumaha nui ʻia, ʻo ia hoʻi nā kaila no nā forklifts, nā kaʻa a me nā mokulele; nā wili alakaʻi, nā huila no nā mīkini; nā wili skate wikiwiki kiʻekiʻe a pēlā aku. I ka pōkole, ʻo ka elastomer ʻano PPDI ke koho kūpono no nā noi o ka abrasion haʻahaʻa loa a me ka mahana kiʻekiʻe loa. I kēia mau lā, hoʻohana nui ʻia ka mea hoʻōla PPDI i nā huahana TPU ma ke ʻano he mea hoʻolōʻihi kaulahao nui, a ke hoʻomau nei ka hoʻonui ʻana o ka noi, me nā O-rings, nā sila hydraulic, nā hōkū coupling a me nā pahi squeegee paʻi pale.