Maalmahan, dad badan ayaan wax badan ka ogeyn ether-ka istaarijka hydroxypropyl. Waxay u maleynayaan inuu jiro farqi yar oo u dhexeeya istaarijka hydroxypropyl iyo istaarijka caadiga ah, laakiin maahan. Hydroxypropyl istaarijka ether waxaa loo isticmaalaa qadar yar oo ah alaabta hoobiye, iyo qadarka dheeraadka ah ee gobolka polar wuxuu gaari karaa saameyn tayo leh.
Hydroxypropyl starch ether (HPS) waa budo cad oo cad oo laga helo dhirta dabiiciga ah sida alaabta ceeriin, wax laga beddelay, aad loo miiray, ka dibna la buufiyay, iyada oo aan lahayn balaastiigyeyaal. Aad ayey uga duwan tahay istaarijka caadiga ah ama istaarijka la beddelay
Hydroxypropyl methyl cellulose, oo sidoo kale loo yaqaan hypromellose iyo hydroxypropyl methyl vitamin cas, ayaa laga sameeyay cellulose suuf ah oo aad u saafi ah sida walxo ceeriin ah, oo lagu daaweeyaa lye at 35-40 ° C nus saac, la tuujiyey, cellulose waa la jajabiyey, oo da'da ku habboon. at 35 ° C, si celceliska heerka polymerization ee fiber alkali ee la helay ay ku dhex jirto xadka loo baahan yahay. Ku rid faybarka alkali ee kiliyaha etherification, ku dar propylene oxide iyo methyl chloride isku xigxiga, ku daadi 50-80°C ilaa 5 saacadood, cadaadiska ugu badanna waa ilaa 1.8MPa. Ka dibna ku dar qadar ku habboon oo ah hydrochloric acid iyo oxalic acid biyaha kulul ee 90 ° C si aad u dhaqdo walxaha si loo ballaariyo mugga, ka dibna fuuq-baxa centrifuge, oo ugu dambeyntii si isdaba joog ah ugu dhaq si dhexdhexaad ah. Si ballaaran loo isticmaalo dhismaha, warshadaha kiimikada, rinjiga, daawada, warshadaha militariga iyo beeraha kale, siday u kala horreeyaan wakiilka-samaynta filimada, binder, dispersant, stabilizer, dhumuc weyn, iwm.
Hydroxypropyl istaarijka ether-ka waxaa loo isticmaali karaa isku dhafka alaabta cement-ku-saleysan, alaabta gypsum-ku-saleysan iyo alaabta kaalshiyamka lime. Waxay si fiican ula jaanqaadi kartaa isku-darka dhismaha kale. Marka lagu daro hydroxypropyl methylcellulose ether HPMC, waxay yarayn kartaa qiyaasta hydroxypropyl methylcellulose (guud ahaan ku darida 0.05% ee HPS waxay yarayn kartaa qiyaasta HPMC qiyaastii 20%-30%), waxayna ciyaari kartaa door dhumuc leh. Waxay kor u qaadaa qaab-dhismeedka gudaha, iska caabinta dildilaaca oo ka sii wanaagsan iyo karti-shaqsiyeed oo wanaajisay.
Waqtiga boostada: Abriil-13-2023