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Ngenxa yenkqubela phambili eqhubekayo kushishino kunye nokuphuculwa kwetekhnoloji, ngokwaziswa nokuphuculwa koomatshini bokutshiza ngesamente bamanye amazwe, itekhnoloji yokutshiza ngesamente kunye nokuplasta iye yaphuhliswa kakhulu kwilizwe lam kwiminyaka yakutshanje. Isamente yokutshiza ngesamente i...Funda ngokugqithisileyo»
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1. Uhlobo lwe-hydroxypropyl methylcellulose olukhawulezayo lwe-instant type lumhlophe okanye lutyheli kancinci, kwaye alunavumba, alunancasa kwaye alunatyhefu. Lunokunyibilikiswa emanzini abandayo kunye nesinyibilikisi esixutyiweyo sezinto eziphilayo ukuze kwenziwe isisombululo esicacileyo nesiqinileyo. Isisombululo samanzi sinomphezulu...Funda ngokugqithisileyo»
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I-Hydroxyethyl cellulose (HEC) yi-solid emhlophe okanye etyheli kancinci, engenavumba, engenatyhefu, ene-fibrous okanye engumgubo. Yenziwe ngee-linters zekotoni eluhlaza okanye i-pulp ecoliweyo efakwe kwi-30% ye-caustic soda engamanzi. Emva kwesiqingatha seyure, iyakhutshwa kwaye icinezelwe. Cinezela ude umlinganiselo wamanzi e-alkaline ufikelele kwi-1:2.8, emva koko...Funda ngokugqithisileyo»
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1. Zithini imisebenzi yomgubo we-latex ophinda uqhekeke kwi-mortar? Impendulo: Umgubo we-latex ophinda uqhekeke ubunjwe emva kokusasazeka kwaye usebenza njengesincamathelisi sesibini ukuphucula i-bond; i-colloid ekhuselayo ifunxwa yinkqubo ye-mortar (ayiyi kuthiwa iyatshatyalaliswa emva kokudityaniswa. Okanye ayi...Funda ngokugqithisileyo»
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Udaka oluxutywe ngamanzi luyisamente, i-aggregate encinci, umxube, amanzi kunye nezinto ezahlukeneyo ezimiselwa ngokwendlela esebenza ngayo. Ngokwemilinganiselo ethile, emva kokulinganiswa nokuxutywa kwisikhululo sokuxuba, luthuthwa luye kwindawo olusetyenziswa kuyo yilori yokuxuba, luze lufakwe kwisixhobo esikhethekileyo esimanzi ...Funda ngokugqithisileyo»
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Umxube udlala indima ebalulekileyo ekuphuculeni ukusebenza kokwakha udaka oluxutywe nowomileyo, kodwa ukongezwa kodaka oluxutywe nowomileyo kwenza ixabiso lezinto ezisetyenzisiweyo zeemveliso zodaka oluxutywe nowomileyo libe phezulu kakhulu kunelodaka lendabuko, elibangela ngaphezulu kwama-40% exabiso lezinto ezisetyenzisiweyo kwidaka elixutywe nowomileyo ...Funda ngokugqithisileyo»
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I-Hydroxypropyl methylcellulose yenziwe nge-cotton cellulose ecocekileyo kakhulu ngokusebenzisa i-etherification ekhethekileyo phantsi kweemeko ze-alkaline, kwaye yonke inkqubo igqitywa phantsi kokubekwa esweni ngokuzenzekelayo. Ayinyibiliki kwi-ether, i-acetone kunye ne-absolute ethanol, kwaye ivuvukala ibe yi-collo ecacileyo okanye enamafu kancinci...Funda ngokugqithisileyo»
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Isixa esithile se-hydroxypropyl methylcellulose ether sigcina amanzi kwi-mortar ixesha elaneleyo lokukhuthaza ukufuma okuqhubekayo kwesamente kunye nokuphucula ukunamathelana phakathi kwe-mortar kunye ne-substrate. Isiphumo soBukhulu beeParticle kunye nexesha lokuxuba le-Hydroxypropyl Methyl Cellulose Ether ...Funda ngokugqithisileyo»
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I-Cellulose ether luhlobo lwezinto zendalo ezithathwe kwi-polymer, ezineempawu ze-emulsification kunye ne-suspension. Phakathi kweentlobo ezininzi, i-HPMC yeyona inemveliso ephezulu kwaye isetyenziswa kakhulu, kwaye imveliso yayo iyanda ngokukhawuleza. Kwiminyaka yakutshanje, ngenxa yokukhula kwe...Funda ngokugqithisileyo»
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IHydroxypropyl methylcellulose (HPMC) yi-non-ionic cellulose ether eyenziwe nge-cellulose yendalo yepolymer material ngokusebenzisa uthotho lweenkqubo zeekhemikhali. Zingumgubo omhlophe ongenavumba, ongenancasa kwaye ongenatyhefu ovuvukala ube yisisombululo se-colloidal esicacileyo okanye esinamafu kancinci emanzini abandayo. Ine...Funda ngokugqithisileyo»
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Umgubo onamathelayo weGypsum (umgubo owomisa ngokukhawuleza) (Iresiphi 1) Umlinganiselo weBinder (kg) Umgubo welatex ophinda uchitheke 5-5.5 IGypsum retarder 0.5-1 Umgubo weplasta weParis (ubumhlophe obungaphezulu kwama-85) 750 Icalcium enzima (umgubo ophindwe kabini) 250 Ukunamathela okuqinileyo, ixesha lokuvula imizuzu engama-20-30. Umgubo owomileyo ...Funda ngokugqithisileyo»
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I-non-ionic cellulose ether yikhemikhali ebalulekileyo efunekayo kushishino lwezinto zokwakha kunye noshishino lokugquma. Okwangoku, phantsi kwemvelaphi yokwanda okuqhubekayo kwexabiso elipheleleyo lemveliso yoshishino lokwakha lwasekhaya kunye nokwandiswa okuqhubekayo kokugquma...Funda ngokugqithisileyo»