ʻO ka TDI a me ka MDI kekahi ʻano mea maka i ka hana polyurethane, a hiki iā lākou ke hoʻololi i kekahi i kekahi i kekahi ʻano, akā ʻaʻohe liʻiliʻi liʻiliʻi ma waena o TDI a me MDI e pili ana i ka hoʻolālā, ka hana a me ka hoʻohana ʻana i ka mahele.
1. ʻOi aku ka ʻike isocyanate o TDI ma mua o ka MDI, a ʻoi aku ka nui o ka nui o ka huʻihuʻi ma kēlā me kēia ʻāpana.ʻO ka inoa piha o TDI ʻo toluene diisocyanate, nona nā hui isocyanate ʻelua ma ke apo benzene hoʻokahi, a ʻo ka ʻike o ka hui isocyanate he 48.3%;ʻO ka inoa piha o MDI ʻo ka diphenylmethane diisocyanate, nona nā apo benzene ʻelua a ʻo 33.6% ka ʻike o ka hui isocyanate;ʻO ka mea maʻamau, ʻoi aku ka kiʻekiʻe o ka ʻike isocyanate, ʻoi aku ka nui o ka nui o ka huʻa ʻana o ka ʻāpana, no laila ke hoʻohālikelike ʻia me nā mea ʻelua, ʻoi aku ka nui o ka TDI unit mass foaming volume.
2. ʻAʻole ʻawaʻawa ka MDI, ʻoiai ʻo TDI he mea ʻona loa.He haʻahaʻa haʻahaʻa ko MDI, ʻaʻole maʻalahi i ka volatilize, ʻaʻohe ʻala hoʻonāukiuki, ʻaʻohe mea ʻona i ke kanaka, ʻaʻohe koi kūikawā no ka lawe ʻana;He kiʻekiʻe ko TDI, he maʻalahi ke hoʻololi, a he ʻala ikaika kona.Aia nā koi koʻikoʻi.
3. ʻO ka wikiwiki o kaʻelemakule o ka MDI pūnaewele wikiwiki.Hoʻohālikelike ʻia me TDI, ʻo ka ʻōnaehana MDI ka wikiwiki o ka hoʻōla ʻana, ka pōʻai pōkole pōkole a me ka hoʻokō ʻana i ka pua.No ka laʻana, pono ʻo TDI-based foam i ka 12-24h curing process no ka hoʻokō ʻana i ka hana maikaʻi loa, ʻoiai ʻo ka ʻōnaehana MDI pono 1h wale nō e hoʻokō i ka hana maikaʻi loa.95% oo.
4. He mea ma'alahi ka MDI e ho'omohala i nā huahana hu'ahu'a like 'ole me ke ki'eki'e pili pili.Ma ka hoʻololiʻana i ka māhele o nā mea, hiki iā ia ke hana i nā huahana me kahi ākea o ka paʻakikī.
5. Hoʻohana nui ʻia ka lalo o ka polymerized MDI no ka hana ʻana i ka ʻōpala paʻa, i hoʻohana ʻia i ke kūkulu ʻana i ka ikehu.pahu hau nā pahu hau, etc. ʻO ka hana honua holoʻokoʻa e pili ana i ka 35% o ka hoʻohana ʻana i ka MDI polymerized, a ʻo ka pahu friji a me ka paʻukū he 20% o ka hoʻohana MDI polymerized;MDI maʻemaʻe ka mea hoʻohana ʻia e hana i ka pulp,kāmaʻa wāwae wāwae, nā elastomers, etc., a hoʻohana ʻia i ka ʻili synthetic, ka hana kāmaʻa, nā kaʻa, etc.;ʻoiai ke hoʻohana nui ʻia ka lalo o TDI i ka ʻūhā palupalu.Ua manaʻo ʻia aia ma kahi o 80% o ka TDI o ka honua i hoʻohana ʻia no ka hana ʻana i ka ʻūhā palupalu, i hoʻohana ʻia i nā Lako, nā kaʻa a me nā māla ʻē aʻe.
Ka manawa hoʻouna: Iune-29-2022