Bayi ọpọlọpọ eniyan ko mọ pupọ nipa hydroxypropyl starch ether.Wọn ro pe iyatọ diẹ wa laarin hydroxypropyl starch ether ati sitashi lasan, ṣugbọn kii ṣe bẹ.Iwọn hydroxypropyl sitashi ether ti a lo ninu awọn ọja amọ-lile jẹ kekere pupọ, ati pe afikun iye ti pola le ṣe aṣeyọri awọn ipa didara to dara.
Hydroxypropyl starch ether (HPS) jẹ lulú itanran funfun ti a gba nipasẹ iyipada awọn ohun ọgbin adayeba, ti o ni itara pupọ, ati lẹhinna fun sokiri, laisi awọn ṣiṣu ṣiṣu.O yatọ patapata si sitashi lasan tabi sitashi ti a ṣe atunṣe.
Ati hydroxypropyl methyl cellulose, tun mo bi hypromellose, hydroxypropyl methyl pupa Vitamin ether, ni lati lo gíga funfun owu cellulose bi aise ohun elo, ki o si toju o pẹlu lye ni 35-40 ° C fun idaji wakati kan, Fun pọ, fifun pa awọn cellulose, ati ọjọ ori daradara ni 35 ° C, ki iwọn apapọ ti polymerization ti okun alkali ti o gba wa laarin iwọn ti a beere.Fi awọn alkali okun sinu etherification Kettle, fi propylene oxide ati methyl kiloraidi ni ọkọọkan, ki o si etherify o ni 50-80°C fun 5 wakati, ati awọn ti o pọju titẹ jẹ nipa 1.8MPa.Lẹhinna ṣafikun iye ti o yẹ ti hydrochloric acid ati oxalic acid si omi gbona ni 90 ° C lati wẹ ohun elo naa lati faagun iwọn didun, lẹhinna gbẹ rẹ pẹlu centrifuge, ati nikẹhin wẹ leralera si didoju.Ti a lo jakejado ni ikole, ile-iṣẹ kemikali, kikun, oogun, ile-iṣẹ ologun ati awọn aaye miiran, ni atele bi oluranlowo fiimu, binder, dispersant, stabilizer, thickener, bbl
Hydroxypropyl sitashi ether le ṣee lo bi adapo fun awọn ọja orisun simenti, awọn ọja orisun gypsum ati awọn ọja kalisiomu orombo wewe.O ni ibamu ti o dara pẹlu awọn admixtures ile miiran.Ti a lo pẹlu hydroxypropyl methylcellulose ether HPMC, o le dinku iwọn lilo ti hydroxypropyl methylcellulose (ni gbogbogbo fifi 0.05% ti HPS le dinku iwọn lilo ti HPMC nipa 20% -30%), ati pe o le mu ipa ti o nipọn, lati ṣe igbega ti inu be, pẹlu dara kiraki resistance ati ki o dara workability.
Akoko ifiweranṣẹ: Oṣu Kẹrin Ọjọ 24-2023