ʻO ka maʻemaʻe o ka hydroxypropyl methylcellulose i loko o ka mortar insulation hale a me ka pauka putty e pili pono ana i ka maikaʻi o ke kūkulu ʻenekinia, no laila he aha nā mea e hoʻopilikia ai i ka maʻemaʻe o ka hydroxypropyl methylcellulose? E ʻae mai iaʻu e pane i kēia nīnau nāu.
I ke kaʻina hana o ka hydroxypropyl methylcellulose, ʻo ke koena o ka oxygen i loko o ka reactor e hoʻoulu ai i ka hōʻino ʻana o ka hydroxypropyl methylcellulose a hoʻemi i ke kaumaha molekala, akā ua kaupalena ʻia ke koena o ka oxygen, inā ʻaʻole paʻakikī loa ke hoʻopili hou i nā molekala i haki ʻia. ʻO ka pōʻino, ʻo ka nui o ka saturation wai koʻikoʻi e pili ana i ka nui o ka hydroxypropyl. Makemake wale kekahi mau hale hana e hoʻemi i ke kumukūʻai a me ke kumukūʻai, akā ʻaʻole makemake e hoʻonui i ka nui o ka hydroxypropyl, no laila ʻaʻole hiki i ka maikaʻi ke hiki i ka pae o nā huahana haole like.
He pilina maikaʻi nō hoʻi ka nui o ka paʻa ʻana o ka wai o ka hydroxypropyl methylcellulose me ka hydroxypropyl, a no ke kaʻina hana holoʻokoʻa, hoʻoholo pū ka hydroxypropyl i ka nui o ka paʻa ʻana o ka wai o ka hydroxypropyl methylcellulose. ʻO ka hopena o ka alkalization, ka lakio o ka methyl chloride a me ka propylene oxide, ka nui o ka alkali a me ka lakio o ka wai i ka pulupulu i hoʻomaʻemaʻe ʻia e hoʻoholo ai i ka hana o ka huahana.
ʻO ke ʻano o nā mea maka, ka hopena o ka alkalization, ka kaohi ʻana o ke kaʻina hana, ka lakio o nā solvents a me ka hopena o ka neutralization e hoʻoholo ai i ka maikaʻi o ka hydroxypropyl methylcellulose, a hana ʻia kekahi hydroxypropyl methylcellulose e hoʻoheheʻe. Ma hope iho, ua like ia me ka hoʻohui ʻana i ka waiū, he keʻokeʻo waiū kekahi, he melemele kekahi, a he moakāka kekahi. Inā makemake ʻoe e hoʻoponopono, e hoʻoponopono mai nā kiko i luna. I kekahi manawa hiki i ka waikawa acetic ke hoʻopilikia nui i ka transmittance māmā. ʻOi aku ka maikaʻi o ka hoʻohana ʻana i ka waikawa acetic ma hope o ka dilution. ʻO ka mana nui loa inā ua hoʻoulu like ʻia ka hopena a inā paʻa ka ratio o ka ʻōnaehana (loaʻa i kekahi mau mea ka makū a paʻa ʻole ka ʻike, e like me ka hana hou ʻana i nā solvents). ʻOiaʻiʻo, he nui nā mea e pāʻani nei. Me ke kūpaʻa o nā lako a me ka hana a nā mea hana i aʻo maikaʻi ʻia, pono e paʻa loa nā huahana i hana ʻia. ʻAʻole e ʻoi aku ka transmittance māmā ma mua o ka ± 2%, a pono e hoʻomalu maikaʻi ʻia ke ʻano like o nā hui substituent. Ma kahi o ke ʻano like, e maikaʻi maoli ka transmittance māmā.
Ka manawa hoʻouna: Mei-30-2023