Nzira yekuyedza viscosity yehydroxypropyl methylcellulose?

Hydroxypropyl methylcellulose yekuvaka inoda kudzivirira kupinza kwemvura mumadziro, uye kuchengetwa kwehuwandu hwakakodzera hwemvura mudhaka kunogona kuita kuti simende ibudise zvizere kuita kwakanaka kwemvura nemvura. Hydroxypropyl methylcellulose Iyo viscosity ye cellulose mudhaka yakanyatsoenderana, iyo yakakwirira viscosity, zviri nani kuchengetedza mvura kwehydroxypropyl methylcellulose.

Kana hunyoro hwehydroxypropyl methylcellulose hwanyanya kukwira, kuchengetwa kwemvura yehydroxypropyl methylcellulose kunodzikira, izvo zvinozotungamira mukudzikira kwekuita kwekuvaka kwehydroxypropyl methylcellulose. Isu tinozivawo zvinhu zvinonyanya kukanganisa. Tinofanira kugara tichiichengeta ichitsva uye tichawana migumisiro isingatarisirwi.

Inooneka viscosity chiratidzo chakakosha chehydroxypropyl methylcellulose. Iyo yakajairika nzira dzekutsunga ndeyekutenderera viscometry, capillary viscometry uye inodonha yematsutso viscometry.

Munguva yakapfuura, nzira yekutsunga yehydroxypropyl methylcellulose yaive capillary viscometry, uchishandisa Ubbelohde viscometer. Kazhinji mhinduro yekutsunga ndeye aqueous solution ye2, uye fomula ndeiyi: V=Kdt. V inomiririra viscosity, iyo unit is , K is the constant of viscometer, d inomiririra density pakupisa nguva dzose, t inoreva nguva kubva kumusoro kusvika pasi kuburikidza ne viscometer, chikwata chechipiri s. Iyi nzira inonyanya kuoma kushanda, uye kana pane zvisingagadziriswi zvinhu, zviri nyore kukonzera kukanganisa, uye zvakaoma kuziva hutano hwehydroxypropyl methylcellulose.

Dambudziko re delamination yekuvaka glue idambudziko rakakura rinosangana nevatengi. Chokutanga pane zvose, dambudziko rezvinhu zvakasvibirira rinofanira kutariswa mune delamination yekuvaka glue. Chikonzero chikuru chekubvisa glue yekuvaka ndeye polyvinyl doro (PVA) uye hydroxypropyl methylcellulose (HPMC). zvichikonzerwa nekusapindirana. Chechipiri, imhaka yekuti nguva yekunyandura haina kukwana; uyezve, kukora kwekuita kweglue yekuvaka hakuna kunaka.

Mukuvaka glue, instant hydroxypropyl methylcellulose (HPMC) inofanirwa kushandiswa, nekuti hydroxypropyl methylcellulose (HPMC) inongoparadzirwa mumvura pasina kunyungudika chaiko. Inenge maminetsi maviri, viscosity yemvura inowedzera zvishoma nezvishoma, ichigadzira yakajeka viscous colloid.

Zvigadzirwa zvinopisa zvinonyunguduka, kana zvasangana nemvura inotonhora, zvinogona kupararira nekukurumidza mumvura inopisa uye kunyangarika mumvura inopisa. Kana tembiricha yadzikira kune imwe tembiricha, viscosity inozoonekwa zvishoma nezvishoma kusvika yaita yakajeka viscous colloid. Huwandu hunokurudzirwa hwehydroxypropyl methylcellulose (HPMC) yakawedzerwa pakuvaka glue i2-4kg.

Hydroxypropyl methylcellulose (HPMC) ine yakagadzikana makemikari zvimiro, mildew kuramba, uye yakanaka kuchengetedza mvura mukuvaka glue, uye haina kukanganiswa nekuchinja kwep value. Inogona kushandiswa neine viscosity kubva ku100,000 S kusvika ku200,000 S. Asi mukugadzirwa, iyo yakakwirira iyo viscosity, zviri nani. The viscosity iri inversely proportional kune chisungo simba. Iyo yakakwirira viscosity, iyo idiki simba. Kazhinji, viscosity ye100,000 S yakakodzera.