Bawo ni lati ṣe idanimọ didara HPMC?

▲Hydroxypropyl methyl cellulose (HPMC)jẹ ohun odorless, tasteless, ti kii-majele ti funfun lulú. Lẹhin tituka ni kikun ninu omi, hydroxypropyl methyl cellulose yoo ṣẹda colloid viscous ti o han gbangba.

▲ Awọn ohun elo aise akọkọ ti hydroxypropyl methyl cellulose (HPMC): owu ti a ti mọ, methyl chloride, propylene oxide, ati awọn ohun elo aise miiran, omi onisuga caustic, acid, toluene, isopropanol, bbl

Ifiwera awọn anfani ati aila-nfani ti hydroxypropyl methyl cellulose:
1.Pure hydroxypropyl methyl cellulose HPMC jẹ alaimuṣinṣin oju ati pe o ni iwuwo kekere kan, pẹlu iwọn ti 0.3-0.4 / ml.
HPMC panṣaga ni omi ti o dara pupọ ati rilara wuwo, eyiti o yatọ ni pataki si ọja gidi ni irisi.
2.Pure hydroxypropyl methyl cellulose HPMC ojutu olomi jẹ kedere, gbigbe ina giga, oṣuwọn idaduro omi> 97%.
Ojutu olomi ti HPMC ti o bajẹ jẹ idọti jo, ati pe oṣuwọn idaduro omi nira lati de 80%.
3.Pure HPMC ko yẹ ki o olfato ti amonia, sitashi ati awọn ọti-lile.
Adulterated HPMC le maa olfato gbogbo iru awọn adun, paapa ti o ba ti o jẹ adun, yoo lero eru.
4.Pure hydroxypropyl methyl cellulose HPMC lulú jẹ fibrous labẹ a maikirosikopu tabi magnifying gilasi.
HPMC ti o ṣe agbero le ṣe akiyesi bi awọn oke-nla granular tabi awọn kirisita labẹ maikirosikopu tabi gilasi ti o ga.

Lati awọn aaye wo ni lati ṣe idanimọ awọn anfani ati awọn aila-nfani ti hydroxypropyl methyl cellulose?
1.funfun ìyí
Botilẹjẹpe funfun ko le pinnu boya HPMC rọrun lati lo, ati pe ti awọn aṣoju funfun ba ṣafikun lakoko ilana iṣelọpọ, yoo ni ipa lori didara rẹ. Sibẹsibẹ, pupọ julọ awọn ọja to dara ni funfun funfun.

2.Fineness
Ti o dara julọ ti HPMC ni gbogbogbo ni apapo 80 ati apapo 100, ati pe itanran ti o dara julọ, ni gbogbogbo, dara julọ.
3.Transmittance
Fihydroxypropyl methyl cellulose (HPMC)sinu omi lati fẹlẹfẹlẹ kan ti sihin colloid, ati ki o ṣayẹwo awọn oniwe-itanna transmittance. Ti o ga julọ gbigbe ina, ti o dara julọ, ti o nfihan pe awọn nkan ti a ko le yanju diẹ wa ninu rẹ. Awọn permeability ti inaro reactors ni gbogbo dara, nigba ti ti petele reactors jẹ buru.

4.Proportion
Ti o tobi ni pato walẹ, awọn wuwo awọn dara. Iyatọ naa tobi, ni gbogbogbo nitori akoonu ti ẹgbẹ hydroxypropyl ninu rẹ ga, ati akoonu ti ẹgbẹ hydroxypropyl ga, idaduro omi dara julọ.