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I-Hydroxypropyl methyl cellulose (HPMC) uhlobo lwe-non-ionic cellulose ether eyenziwe nge-polymer cotton yemvelo ngochungechunge lwezindlela zokwelapha zamakhemikhali. Embonini yokwakha, iyini ukusetshenziswa okuyinhloko kwe-hydroxypropyl methylcellulose? 1, i-cement mortar: ukuthuthukisa izinga lokusabalala kwesihlabathi sikasimende, g...Funda kabanzi»
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Uma zihlukaniswa ngokwezinto ezithatha indawo, ama-cellulose ether angahlukaniswa abe ama-single ethers kanye nama-mixed ethers; ahlukaniswe ngokwe-solubility, ama-cellulose ethers angahlukaniswa abe yi-soluble emanzini kanye ne-soluble emanzini. Indlela eyinhloko yokuhlukanisa i-cellulose ether ukuhlukanisa ngokwe-ion...Funda kabanzi»
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1. Isimiso sokwakheka nokulungiselela i-cellulose ether Umfanekiso 1 ukhombisa isakhiwo esijwayelekile sama-cellulose ethers. Iyunithi ngayinye ye-bD-anhydroglucose (iyunithi ephindaphindayo ye-cellulose) ithatha indawo yeqembu elilodwa ezikhundleni ze-C (2), C (3) kanye ne-C (6), okungukuthi, kungaba namaqembu e-ether afinyelela kwamathathu. Ngenxa ye ...Funda kabanzi»
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Izici eziyinhloko zokuphuzi kobuso be-putty engangeni manzi Ngemva kocwaningo lwezinto ezibonakalayo, inani elikhulu lokuhlola kanye nomkhuba wobunjiniyela, umbhali ukholelwa ukuthi izici eziyinhloko zokuphuzi kobuso be-putty engangeni manzi yilezi ezilandelayo: Isizathu 1. I-Calcium...Funda kabanzi»
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1. I-Hydroxypropyl methyl cellulose I-Hydroxypropyl methylcellulose uhlobo lwe-cellulose olukhiqizayo futhi olusetshenziswayo lukhula ngokushesha. Luyi-ether exubile ye-cellulose engeyona i-ionic eyenziwe ngokotini ocolisisiwe ngemva kokuhlanganiswa kwe-alkali, kusetshenziswa i-propylene oxide ne-methyl chloride njenge-ether ye-etherification, ngokusebenzisa...Funda kabanzi»
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Impahla ebaluleke kakhulu yesisombululo se-cellulose ether yimpahla yaso ye-rheological. Izakhiwo ezikhethekile ze-rheological zama-ether amaningi e-cellulose ziwenza asetshenziswe kabanzi emikhakheni eyahlukahlukene, futhi ukutadisha izakhiwo ze-rheological kuyazuzisa ekuthuthukisweni kwamasimu amasha okusetshenziswa noma...Funda kabanzi»
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Yiziphi izakhiwo ze-carboxymethyl cellulose? Impendulo: I-Carboxymethyl cellulose nayo inezakhiwo ezahlukene ngenxa yamazinga ayo ahlukene okushintsha. Izinga lokushintsha, elaziwa nangokuthi izinga lokushintsha, lisho inani elimaphakathi le-H kumaqembu amathathu e-OH hydroxyl rep...Funda kabanzi»
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I-Carboxymethyl cellulose： I-ether ye-cellulose ye-Ionic yenziwe ngemicu yemvelo (ukotini, njll.) ngemva kokwelashwa nge-alkali, kusetshenziswa i-sodium monochloroacetate njenge-etherification agent, futhi idlula ochungechungeni lwezindlela zokwelapha zokusabela. Izinga lokushintshana ngokuvamile lingu-0.4~1.4, futhi ukusebenza kwalo kuhle kakhulu...Funda kabanzi»
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I-Ethyl cellulose (i-Ethyl cellulose ether), eyaziwa nangokuthi i-cellulose ether, ebizwa ngokuthi i-EC. Ukwakheka kwama-molecule kanye nefomula yesakhiwo: [C6H7O2(OC2H5)3] n. 1. Ukusebenzisa Lo mkhiqizo unemisebenzi yokubopha, ukugcwalisa, ukwakha ifilimu, njll. Usetshenziselwa amapulasitiki okwenziwa yi-resin, izembozo, i-sub yerabha...Funda kabanzi»
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(1) Izithiyo zobuchwepheshe Amakhasimende angaphansi kwe-cellulose ether anezidingo eziphakeme zekhwalithi kanye nokuqina kwe-cellulose ether. Ubuchwepheshe bokulawula ikhwalithi buyisithiyo esibalulekile sobuchwepheshe embonini ye-cellulose ether. Abakhiqizi badinga ukwazi kahle ukusebenza komklamo ohambisanayo we-co...Funda kabanzi»
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Chaza: Ukwakheka kokudla okuhlanganisa ama-ether e-cellulose Inkambu yobuchwepheshe: Lo mbono wamanje uhlobene nokwakheka kokudla okuqukethe ama-ether e-cellulose. Inqubo yangemuva: Sekuyisikhathi eside kwaziwa ngokufaka ama-ether e-cellulose ezinhlakeni zokudla, ikakhulukazi ukwakheka kokudla okucutshunguliwe, ...Funda kabanzi»
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1. Izici ezinhle (1) Ukusekelwa kwenqubomgomo Njengento entsha esuselwe ku-bio kanye nezinto eziluhlaza nezinobungani nemvelo, ukusetshenziswa kabanzi kwe-cellulose ether emkhakheni wezimboni kuyindlela yokuthuthukisa ukwakha umphakathi onobungani nemvelo nowonga izinsiza esikhathini esizayo. I-d...Funda kabanzi»