I kēia mau lā, ʻaʻole ʻike nui ka poʻe e pili ana i ka hydroxypropyl starch ether. Manaʻo lākou he ʻokoʻa liʻiliʻi ma waena o ka hydroxypropyl starch ether a me ka starch maʻamau, akā ʻaʻole. Hoʻohana ʻia ka hydroxypropyl starch ether ma kahi liʻiliʻi i nā huahana mortar, a hiki i ka nui o ka ʻāina polar ke hoʻokō i nā hopena maikaʻi.
ʻO ka hydroxypropyl starch ether (HPS) he pauka maikaʻi keʻokeʻo i loaʻa mai nā mea kanu maoli e like me nā mea maka, hoʻololi ʻia, etherified nui, a laila hoʻomaloʻo ʻia, me ka ʻole o nā plasticizers. He ʻokoʻa loa ia mai ka starch maʻamau a i ʻole starch hoʻololi ʻia
ʻO Hydroxypropyl methyl cellulose, ka mea i ʻike ʻia he hypromellose a me ka hydroxypropyl methyl red vitamin ether, i hana ʻia me ka pulupulu maʻemaʻe maʻemaʻe ma ke ʻano he mea maka, mālama ʻia me ka lye ma 35-40 ° C no ka hapalua hola, ʻomi ʻia, ua pulverized ka cellulose, a ʻelemakule kūpono. ma 35 ° C, no laila ke degere awelika o ka polymerization o ka fiber alkali i loaʻa i loko o ka pae i koi ʻia. E hoʻokomo i ka fiber alkali i loko o ka ipu etherification, e hoʻohui i ka propylene oxide a me ka methyl chloride i ke kaʻina, etherify ma 50-80 ° C no 5 mau hola, a ʻo ke kaomi kiʻekiʻe ma kahi o 1.8MPa. A laila e hoʻohui i ka nui kūpono o ka waika hydrochloric a me ka waikawa oxalic i ka wai wela ma 90 ° C e holoi i ka mea e hoʻonui ai i ka leo, a laila e hoʻomaloʻo me ka centrifuge, a ma hope e holoi pinepine i ka neutrality. Hoʻohana nui ʻia i ke kūkulu ʻana, ka ʻoihana kemika, ka pena, ka lāʻau lapaʻau, ka ʻoihana koa a me nā ʻoihana ʻē aʻe, e like me ka mea hana kiʻiʻoniʻoni, binder, dispersant, stabilizer, thickener, etc.
Hiki ke hoʻohana ʻia ka hydroxypropyl starch ether ma ke ʻano he admixture no nā huahana ciment-based, nā huahana gypsum-based a me nā huahana lime calcium. He kūpono kūpono me nā mea hoʻohui hale ʻē aʻe. Hoʻohana pū ʻia me ka hydroxypropyl methylcellulose ether HPMC, hiki iā ia ke hōʻemi i ke ʻano o ka hydroxypropyl methylcellulose (ma ka hoʻohui ʻana i ka 0.05% o HPS hiki ke hōʻemi i ka nui o HPMC ma kahi o 20% -30%), a hiki ke pāʻani i kahi hana mānoanoa. Hoʻoikaika i ka hoʻolālā kūloko, ʻoi aku ka maikaʻi o ka pale ʻana a me ka hoʻomaikaʻi ʻana i ka hana.
Ka manawa hoʻouna: Apr-13-2023