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Isiphumo sokutyeba kwe-cellulose ether sixhomekeke ku: inqanaba le-polymerization ye-cellulose ether, uxinano lwesisombululo, izinga lokucheba, ubushushu kunye nezinye iimeko. Ipropati ye-gelling yesisombululo ikhethekile kwi-alkyl cellulose kunye ne-derivatives yayo eguquliweyo. Iimpawu ze-gelation zi...Funda ngokugqithisileyo»
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1. Ubushushu bokufuma Ngokwendlela yokukhululwa kobushushu bokufuma ngokuhamba kwexesha, inkqubo yokufuma yesamente idla ngokwahlulwahlulwa ibe ngamanqanaba amahlanu, oko kukuthi, ixesha lokuqala lokufuma (0~15min), ixesha lokungeniswa (15min~4h), ixesha lokukhawulezisa kunye nokuseta (4h~8h), ukunciphisa isantya ...Funda ngokugqithisileyo»
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Ekusetyenzisweni kwezixhobo zokwakha, i-hydroxypropyl methylcellulose sisixhobo sokongeza esisetyenziswa kakhulu kwizixhobo zokwakha, kwaye i-hydroxypropyl methylcellulose isetyenziswa kakhulu kushishino kwaye ineentlobo ezahlukeneyo. I-Hydroxypropyl methylcellulose inokwahlulwa ibe yi-cold water instant type kunye ne-hot melt type,...Funda ngokugqithisileyo»
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Kwi-putty, i-samente mortar kunye ne-gypsum-based slurry, i-HPMC hydroxypropyl methylcellulose ether idlala indima yokugcina amanzi kunye nokuqina, kwaye inokuphucula ngempumelelo ukunamathela kunye nokumelana nokuwa kwe-slurry. Izinto ezifana nobushushu bomoya, ubushushu kunye nesantya soxinzelelo lomoya ziya...Funda ngokugqithisileyo»
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I-Hydroxypropyl methyl cellulose (HPMC) luhlobo lwe-non-ionic cellulose ether eyenziwe nge-polymer cotton yendalo ngothotho lweendlela zonyango lweekhemikhali. Kwishishini lokwakha, yintoni eyona nto isetyenziswa kakhulu yi-hydroxypropyl methylcellulose? 1, i-samente mortar: ukuphucula inqanaba lokusasazeka kwesanti yesamente,...Funda ngokugqithisileyo»
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Zihlelwe ngokweendlela ezithatha indawo, ii-cellulose ethers zinokwahlulwa zibe zii-single ethers kunye nee-mixed ethers; zihlelwe ngokwendlela ezinyibilikayo ngayo, ii-cellulose ethers zinokwahlulwa zibe zii-water-soluble kunye nee-water-soluble. Eyona ndlela iphambili yokwahlulahlula i-cellulose ether kukwahlula ngokwe-ion...Funda ngokugqithisileyo»
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1. Umgaqo wolwakhiwo kunye nokulungiselela i-cellulose ether Umfanekiso 1 ubonisa ulwakhiwo oluqhelekileyo lwee-cellulose ethers. Iyunithi nganye ye-bD-anhydroglucose (iyunithi ephindaphindayo ye-cellulose) ithatha indawo yeqela elinye kwiindawo ze-C (2), C (3) kunye ne-C (6), oko kukuthi, kunokubakho amaqela e-ether amathathu. Ngenxa ye ...Funda ngokugqithisileyo»
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Izinto eziphambili ezenza umphezulu we-putty ungangeni manzi ube tyheli Emva kophando lwezinto eziphathekayo, inani elikhulu leemvavanyo kunye nokuziqhelanisa nobunjineli, umbhali ukholelwa ukuba izinto eziphambili ezenza umphezulu we-putty ungangeni manzi zibe tyheli zezi zilandelayo: Isizathu 1. I-calcium...Funda ngokugqithisileyo»
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1. I-Hydroxypropyl methyl cellulose I-Hydroxypropyl methylcellulose luhlobo lwe-cellulose oluphuma kuyo kwaye lusetyenziswa ngokukhawuleza. Luyi-non-ionic cellulose mixed ether eyenziwe ngekotoni ecociweyo emva kokusetyenziswa kwe-alkali, kusetyenziswa i-propylene oxide kunye ne-methyl chloride njenge-ether ye-etherification, ngokusebenzisa...Funda ngokugqithisileyo»
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Eyona propati ibalulekileyo yesisombululo se-cellulose ether yipropati yaso ye-rheological. Iipropati ezikhethekileyo ze-rheological zee-cellulose ethers ezininzi zenza ukuba zisetyenziswe kakhulu kwiindawo ezahlukeneyo, kwaye uphononongo lweepropati ze-rheological luluncedo ekuphuhlisweni kweentsimi ezintsha zesicelo okanye...Funda ngokugqithisileyo»
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Zithini iimpawu ze-carboxymethyl cellulose? Impendulo: I-Carboxymethyl cellulose ikwaneempawu ezahlukeneyo ngenxa yamanqanaba ayo ahlukeneyo okutshintshwa. Iqondo lokutshintshwa, elaziwa ngokuba liqondo lokufakelwa kwe-ether, lithetha inani eliqhelekileyo le-H kumaqela amathathu e-OH hydroxyl rep...Funda ngokugqithisileyo»
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I-Carboxymethyl cellulose： I-Ionic cellulose ether yenziwe ngeefayibha zendalo (ikotoni, njl.njl.) emva konyango lwe-alkali, kusetyenziswa i-sodium monochloroacetate njenge-etherification agent, kwaye ifumana unyango lokuphendula olulandelelanayo. Umgangatho wokutshintshwa ngokubanzi yi-0.4 ~ 1.4, kwaye ukusebenza kwayo kukhulu...Funda ngokugqithisileyo»