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Nzira yekuchengetedza uye kuona viscosity yehydroxypropyl methylcellulose?

Kuoneka viscosity chiratidzo chakakosha chehydroxypropyl methylcellulose, nzira dzinowanzoshandiswa dzekuyera dzinosanganisira kutenderera viscometry, capillary viscometry uye kudonha viscometry.

Hydroxypropyl methylcellulose yakamboyerwa uchishandisa capillary viscometry uchishandisa Ubbelohde viscometer. Kazhinji chiyero chekuyera mhinduro ine aqueous ye2, fomula ndeiyi: V = Kdt. V inomiririra viscosity, K ndiyo inoramba iripo yeviscometer, d inomiririra density patembiricha isingaperi, t inoreva nguva kubva kumusoro kusvika kuzasi kweviscometer, chikamu chechipiri, nzira iyi inonetsa kushanda uye zviri nyore kukonzera Zvakaipa, uye zvakaoma kusiyanisa mhando yehydroxypropyl methylcellulose.

Dambudziko re delamination yekuvaka glue idambudziko rakakura rinosangana nevatengi. Chekutanga pane zvese, dambudziko rezvinhu zvakasvibirira rinofanira kutariswa kune yekuvaka glue layer. Chikonzero chikuru chekuvaka glue layer ndechekuti polyvinyl doro (PVA) uye hydroxypropyl methylcellulose (HPMC) hazvienderane. Chikonzero chechipiri ndechekuti nguva yekukurudzira haina kukwana, uye kuwedzera kwekuita kweglue yekuvaka hakuna kunaka.

Iyo hydroxypropyl methylcellulose (HPMC) yezvino kugadzirwa inoda kushandiswa mukuvaka glue, nekuti hydroxypropyl methylcellulose (HPMC) yakaparadzirwa mumvura uye haigone kunyungudika chaizvo, uye viscosity yemvura inowedzera zvishoma nezvishoma mumaminitsi maviri, ichiita Transparent viscous colloid. .

Apo zvinopisa zvinonyunguduka zvinosanganiswa pamwechete mumvura inotonhora, zvinokurumidza kupararira mumvura inopisa uye zvinopera mumvura inopisa. Kana tembiricha yadonha kune imwe tembiricha, iyo viscosity inozoonekwa zvishoma nezvishoma kusvika yakajeka viscous colloid yaumbwa. Hydroxypropyl mukuvaka adhesive Iyo inokurudzirwa dosage yeHPMC ndeye 2-4kg.

Hydroxypropyl methylcellulose (HPMC) ine yakagadzikana makemikari ehupfumi, mildew kuramba uye kuchengetwa kwemvura kwakanaka mumanamira ekuvaka, uye haina kukanganiswa nepH shanduko. Inogona kushandiswa kubva ku100,000 S kusvika ku200,000 S, asi iyo yakakwira viscosity mukugadzira, zviri nani, uye viscosity inopesana nekuenzana kwesimba rekubatanidza. Iyo yakakwirira iyo viscosity, yakaderera simba, kazhinji viscosity ye100,000 S yakakodzera.


Nguva yekutumira: Kubvumbi-20-2023
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