Hadda dad badan ayaan wax badan ka aqoon hydroxypropyl starch ether.Waxay u maleynayaan inuu jiro farqi yar oo u dhexeeya istaarijka hydroxypropyl iyo istaarijka caadiga ah, laakiin maahan.Qadarka ether-ka istaarijka hydroxypropyl ee loo isticmaalo alaabada hoobiye aad ayey u yar tahay, qadarka dheeriga ah ee polar wuxuu gaari karaa saameyn tayo wanaagsan leh.
Hydroxypropyl istaarijka ether (HPS) waa budo cad oo ganaax ah oo lagu helo iyadoo wax laga beddelayo dhirta dabiiciga ah, si heer sare ah loo miiray, ka dibna la buufiyay, iyada oo aan lahayn balaastiigyeyaal.Aad ayey uga duwan tahay istaarijka caadiga ah ama istaarijka la beddelay.
Iyo hydroxypropyl methyl cellulose, oo sidoo kale loo yaqaan hypromellose, hydroxypropyl methyl vitamin cas, waa in la isticmaalo cellulose suuf aadka u saafiga ah sida alaabta ceeriin, oo lagu daaweeyaa lye at 35-40 ° C nus saac, tuujin, burburin cellulose ah, iyo da'da saxda ah ee 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 si isku xigta, oo ku ethereter 50-80 ° C ilaa 5 saacadood, cadaadiska ugu badanna waa qiyaastii 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.Si wadajir ah loo isticmaalo hydroxypropyl methylcellulose ether HPMC, waxay yarayn kartaa qiyaasta hydroxypropyl methylcellulose (guud ahaan ku darida 0.05% ee HPS waxay yareyn kartaa qiyaasta HPMC qiyaastii 20% -30%), waxayna ciyaari kartaa saameyn dhumuc leh, si kor loogu qaado gudaha gudaha qaab dhismeedka, oo leh iska caabin dildilaac ah oo ka sii wanaagsan iyo hagaajinta shaqada.
Waqtiga boostada: Abriil-24-2023