Abakhiqizi be-HPMC bakufundisa ukuhlola i-HPMC Viscosity

Tiantai Cellulose company specializes in the research, development, production and sales promotion of hydroxypropyl methyl cellulose HPMC products. Ubumsulwa be-HPMC Hydroxypropyllllylyl Methyl cellulose yisihloko somkhiqizo okhathazeke kakhulu sabakhiqizi nabasebenzisi. Lapha sikwenza ama-hydroxypropyllylylylyl methyllulose abakhiqizi ukunikeza isingeniso eningilizayo, ngithemba ukuthi ngizofunda ukusiza.

Ukunqunywa kobumsulwa kwe-HPMC HYDROXYPROPYLL Methyl cellulose

Umgomo

I-Hydroxypropyllykyl methyl cellulose HPMC iyi-infoluble ku-80% ethanol. Ngemuva kokuncibilika nokugeza isikhathi esiningi, i-80% ethanol echithwe kusampula ihlukaniswe futhi isuswe ukuze ithole i-hydroxypropproselylylylylylylyl methr.

Rukhonze

Ngaphandle kokuthi kuchazwe ngenye indlela, ama-reagents kuphela aqinisekisile ukuthi angabahlazikazi ahlanzekile futhi ahlutshiwe noma amanzi okuhlanzeka okuqhathaniswa nawo azosetshenziswa ekuhlaziyweni.

I-95% ethanol (GB / T 679).

I-Ethanol, isixazululo esingu-80%, i-dilute 95% ethanol (E.2.1) 840ml ngamanzi ku-1l.

BMI (GB / T 12591).

Ithuluzi

Izinsimbi ezijwayelekile zelebhu

UMagnetic Heading Stillrer, Ubude Basebandlululo Oluphakama Cishe ngo-3.5cm.

I-Filtration enobuthi, 40ml, i-aperture 4.5μm ~ 9μm.

I-Glass Surface Dish, φ1rmercm, Hole Central.

I-beaker, 400ml.

Ukugeza kwamanzi okushisa njalo.

I-Oven, ingalawula izinga lokushisa ku-105 ℃ ± 2 ℃.

Uhlelo

Accurately weigh the sample 3g (accurate to 0.001g) into a constant weight beaker, add 150mL 80% ethanol at 60℃ ~ 65℃, put the magnetic rod into the magnetic heating stirrers, cover the surface dish, insert a thermometer in the center Hole, vula izitha zokushisa, lungisa ijubane lokuvuselela ukugwema ukuguquguquka, futhi ulondoloze izinga lokushisa ngo-60 ℃ ~ 65 ℃. Ivuse imizuzu eyi-10.

Misa ukushukumisa, beka i-beaker kubhavu wamanzi wokushisa ahlala njalo angama-60 ℃ ~ 65 ℃, ame azoxazulula i-infoluble, bese uthela uketshezi lwama-supernatants cishe ngokunokwenzeka ekuhlutjweni kwesisindo esiphelele.

Faka i-150ml 80% ethanol ngo-60 ℃ ~ 65 ℃ ~ 65 ℃ ku-beaker, phinda eminye imisebenzi evusa amadlingozi, bese ugeza i-beaker, bese ugeza induku kanye ne-thermometer ngokucophelela nge-80% ethanol ngo-60 ℃ ~, ukuze Udaba lwe-insoluble ludluliswa ngokuphelele entweni ebekiwe, futhi futhi ugeze okuqukethwe kokunye okubekiwe. Ukumunca kufanele kusetshenziswe phakathi nalokhu kusebenza nokomiswa kwekhekhe kufanele kugwenywe. Uma izinhlayiya zidlula ngesihlungi, ukuncela kufanele kwehliswe kwehliswe.

QAPHELA: Kufanele kuqinisekiswe ukuthi i-sodium chloride kusampula igezwa ngokuphelele nge-80% ethanol. Uma kunesidingo, i-0.1mol / l yesiliva ye-nitline solution kanye ne-6mol / l nitric acid ingasetshenziswa ukubheka ukuthi ngabe i-filtrate iqukethe i-chloride ions.

Emazingeni okushisa ekamelo, okuqukethwe okuvuselelwe kwagezwa kabili nge-95% ethanol e-50ml, futhi ekugcineni nge-ethyl midyml yokugeza kwesibili. Isikhathi sokuhlunga akufanele sibe yinde kakhulu. Ukucwaswa kubekwe ku-beaker futhi kufuthelwe kubhavu we-steam kuze kube yilapho i-ethyl mi ador yatholakala.

Qaphela: Ukugeza nge-ETHYL MI kuyadingeka ukuze ususe ngokuphelele i-ethanol kusuka entweni engenawo insoluble. Uma i-ethanol ingasuswa ngokuphelele ngaphambi kokuba okomisa uhhavini, ukususwa okuphelele akunakwenzeka ngesikhathi sokomiswa ku-oveni.

I-Earcicible neBeaker babekwa kuhhavini ngo-105 ℃ ± 2 2 ℃ ℃ 2 ℃ 2 . Uma kwenzeka ukwanda kwesisindo ngesikhathi sokomiswa kwe-1h, isisindo esiphansi kunazo zonke siyoba khona.

Imiphumela ibaliwe

Ubumsulwa be-HPMC HYDROXYPRYPROPYLYPRETY BUTRELLELWE njengengxabano enkulu P, futhi inani lavezwa njenge-%

M1 - isisindo sokulungiswa kwe-insoluble okomile, kumagremu (g);

M0 - isisindo sengxenye yokuhlola, kumagremu (g);

W0 - umswakama nokuqukethwe okuguquguqukayo kwesampula,%.

Inani le-arithmetic lisho ukuthi izilinganiso ezimbili ezihambisanayo lincishiswa liye endaweni eyodwa yedesimali njengomphumela wokulinganisa.

Pisiqiniseko

Umehluko ngokuphelele phakathi kwezilinganiso ezimbili ezizimele ezitholwe ngaphansi kwezimo eziphindaphindwayo akayona imali engu-0.3%, inqobo nje uma imali enkulu ka-0.3% ayidluli ku-5%.