ʻO ka hoʻohui pāpaʻu, kahi mea nui i ka hoʻomaikaʻi ʻana i ka hana o ke kūkulu ʻana i ka mortar maloʻo maloʻo, ʻoi aku ma mua o 40% o ke kumu kūʻai o ka mortar maloʻo.Hāʻawi ʻia ka hapa nui o nā mea hoʻohui i ka mākeke kūloko e nā mea hana ʻē aʻe, a hāʻawi pū ʻia ka helu kuhikuhi o nā huahana e nā mea hoʻolako.ʻO ke kumu kūʻai o ka huahana mortar maloʻo maloʻo e mau ana i ke kiʻekiʻe, a he paʻakikī ke hoʻolaha i ka masonry maʻamau a me ka plastering mortar me ka nui a me ka laulā.Hoʻomalu ʻia nā huahana mākeke kiʻekiʻe e nā hui ʻē aʻe, a he haʻahaʻa ka loaʻa kālā o nā mea hana mortar maloʻo a me ke kumukūʻai maikaʻi ʻole;ʻaʻohe o ka hoʻohana ʻana i nā mea hui pū me ka noiʻi ʻōnaehana, a hahai makapō i nā ʻano ʻōlelo haole.Maʻaneʻi,ʻo ka mea a mākou e kaʻana aku ai iāʻoe, he aha ke kuleana o ka hydroxypropyl methylcellulose i loko o nā hui likeʻole o ka mortar maloʻo?
ʻO ka Hydroxypropyl methylcellulose kahi ʻano cellulose nona ka hoʻonui ʻana a me ka hoʻohana ʻana i ka wikiwiki i nā makahiki i hala.Hana ʻia ʻo Hydroxypropyl methylcellulose i ka pulupulu hoʻomaʻemaʻe ma hope o ka mālama ʻana i ka alkalization, me ka hoʻohana ʻana i ka propylene oxide a me ka methyl chloride e like me nā mea etherification, kahi non-ionic cellulose i hui ʻia eter i hana ʻia ma o ke ʻano o nā hopena.ʻO ka pae o ka hoʻololi ʻana he 1.2-2.0.ʻOkoʻa kona mau waiwai ma muli o ka ratio o ka methoxyl content a me ka hydroxypropyl content.ʻO nā hiʻohiʻona o ka hydroxypropyl methylcellulose penei:
1. Hiki ke hoʻoheheʻe ʻia ka Hydroxypropyl methylcellulose i ka wai anuanu, a e loaʻa iā ia nā pilikia i ka hoʻoheheʻe ʻana i ka wai wela.Akā ʻoi aku ka kiʻekiʻe o ka mahana o ka gelation i ka wai wela ma mua o ka methyl cellulose.Hoʻomaikaʻi maikaʻi ʻia ka solubility i ka wai anuanu ke hoʻohālikelike ʻia me ka methyl cellulose.
2. Ua pili ka viscosity o ka hydroxypropyl methylcellulose i kona kaumaha mole.ʻO ka nui o ke kaumaha molekala, ʻoi aku ka kiʻekiʻe o ka viscosity.Hoʻopili ka mahana i kona viscosity, i ka piʻi ʻana o ka mahana, emi ka viscosity.Eia naʻe, ʻoi aku ka haʻahaʻa o ka mana o kona viscosity kiʻekiʻe a me ka mahana ma mua o ka methyl cellulose.Paʻa kona hopena ke mālama ʻia ma ka lumi wela.
3. ʻO ka paʻa ʻana o ka wai o ka hydroxypropyl methylcellulose e pili ana i kona nui hoʻohui, viscosity, a me nā mea ʻē aʻe, a ʻoi aku ka kiʻekiʻe o ka paʻa ʻana o ka wai ma lalo o ka nui hoʻohui like ma mua o ka methyl cellulose.
4. He kūpaʻa ka Hydroxypropyl methylcellulose i ka waikawa a me ka alkali, a ua paʻa loa kona hopena wai i ka pae o ka pH = 2 ~ 12.He liʻiliʻi ka hopena o ka soda a me ka wai lime i kāna hana, akā hiki i ka alkali ke wikiwiki i kona hoʻoheheʻe ʻana a hoʻonui iki i kona viscosity.ʻO ka Hydroxypropyl methylcellulose paʻa i nā paʻakai maʻamau, akā inā kiʻekiʻe ke kiʻekiʻe o ka paʻakai paʻakai, piʻi ka viscosity o ka hydroxypropyl methylcellulose solution.
5. Hiki ke hoʻohui ʻia ka hydroxypropyl methylcellulose me nā polymers hiki ke hoʻoheheʻe ʻia i ka wai e hana i kahi ʻano like ʻole a ʻoi aku ka viscosity solution.E like me ka waiʻona polyvinyl, starch ether, mea ʻai meaʻai, etc.
6. ʻO ka hydroxypropyl methylcellulose he ʻoi aku ka maikaʻi o ke kūpaʻa enzyme ma mua o ka methylcellulose, a ʻoi aku ka haʻahaʻa o ka hoʻohaʻahaʻa enzymatic o kāna hopena ma mua o ka methylcellulose.
7. ʻOi aku ka kiʻekiʻe o ka hoʻopili ʻana o ka hydroxypropyl methylcellulose i ke kūkulu ʻana i ka mortar ma mua o ka methylcellulose.
Ka manawa hoʻouna: Mei-09-2023