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IHydroxypropylmethylcellulose (HPMC) yipolymer esebenza ngeendlela ezininzi esetyenziswa kakhulu kwishishini lamayeza. Ikwicandelo le-cellulose ether kwaye isuka kwi-cellulose yendalo. I-HPMC yenziwa ngokunyanga i-cellulose nge-propylene oxide kunye ne-methyl chloride, nto leyo ebangela ukuba kubekho iikhompawundi...Funda ngokugqithisileyo»
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IHydroxypropyl methylcellulose (HPMC) ayisiyo plasticizer ngokwendlela yendabuko. Yinto evela kwi-cellulose esetyenziswa kakhulu kumashishini amayeza, ukutya, ukwakha kunye nokunyamekela umntu. Nangona ingasebenzi njengee-plasticizers ezisetyenziswa kwi-polymers, ibonisa iimpawu ezithile...Funda ngokugqithisileyo»
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I-Hydroxypropyl methylcellulose (HPMC) coating yinto eguquguqukayo esetyenziswa kakhulu kwiindlela ezahlukeneyo zokusebenza kumashishini ahlukeneyo. I-HPMC yi-semi-synthetic, inert, non-toxic polymer ephuma kwi-cellulose. Isetyenziswa kakhulu njengezinto zokugquma amayeza, ukutya nezinye...Funda ngokugqithisileyo»
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Intshayelelo kwiHydroxypropyl Methylcellulose (HPMC) IHydroxypropyl methylcellulose, eyaziwa ngokuba yiHPMC, sisixhobo esenziwe ngecellulose esiguqulwe kwicellulose yendalo. Sisetyenziswa kakhulu kumashishini okwakha, amayeza, ukutya kunye namanye amashishini, ingakumbi kushishino lwePVC. Le compound...Funda ngokugqithisileyo»
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IHydroxypropyl methylcellulose (HPMC) sisongezelelo esisetyenziswa kakhulu kwishishini lokwakha, ingakumbi kwizixhobo ezisekwe kwisamente. Iimpawu zayo ezikhethekileyo ziyenza ibe yinxalenye ebalulekileyo kwizicelo ezahlukeneyo, ukusuka ekuphuculeni ukusebenza kakuhle ukuya ekuphuculeni ukusebenza kunye nokuqina kwekhonkrithi ...Funda ngokugqithisileyo»
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Ishishini lokwakha liyaqhubeka nokutshintsha, lifuna izixhobo ezintsha zokuphucula ukusebenza kweemortar zokwakha. Enye yezinto ezifumana ingqwalasela eninzi yivinyl acetate-ethylene (VAE) redispersible polymer powder (RDP). Le powder iguquguqukayo ibonakalise ukuba ixabiseke kakhulu ekuphuculeni...Funda ngokugqithisileyo»
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Izincamathelisi zephepha lodonga zidlala indima ebalulekileyo ekusetyenzisweni ngempumelelo kunye nobude bexesha lephepha lodonga. I-Hydroxypropyl methylcellulose (HPMC) sisongezelelo esisebenziseka lula esisetyenziswa kakhulu ekwenzeni izincamathelisi zephepha lodonga ukuphucula iimpawu ezahlukeneyo, kubandakanya amandla okubopha, ukuqhubekeka nokusebenza kunye nokufuma...Funda ngokugqithisileyo»
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A. Ifomula yokuncamathelisa iithayile: 1. Ulwakhiwo olusisiseko: Izincamathelisi zeethayile zihlala ziqulathe umxube wesamente, isanti, iipolymers kunye nezongezo. Iifomyula ezithile zinokwahluka ngokuxhomekeke kuhlobo lwethayile, isiseko kunye neemeko zokusingqongileyo. 2. Isincamathelisi sethayile esisekelwe kwisamente: Isamente yasePortland: Inika amandla okubopha...Funda ngokugqithisileyo»
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Ukuveliswa kwee-mortars ezizilinganisayo ezisekelwe kwi-gypsum kufuna ukusetyenziswa kweentlobo ngeentlobo zezinto ezikrwada, nganye kuzo echaphazela iipropati ezithile zemveliso yokugqibela. Icandelo elibalulekileyo le-mortar ezizilinganisayo yi-cellulose ether, eyongeziweyo ebalulekileyo. I-mortar ezizilinganisayo ezisekelwe kwi-gypsum...Funda ngokugqithisileyo»
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I-Polyanionic cellulose (PAC) sisixhobo esinyibilikayo emanzini esisetyenziswa kakhulu kwishishini leoyile negesi, ingakumbi kwi-fracturing fluid formulations. I-Hydraulic fracturing, eyaziwa ngokuba yi-fracking, yindlela yokuvuselela esetyenziselwa ukwandisa ukukhutshwa kweoyile negesi yendalo...Funda ngokugqithisileyo»
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1. Ulwakhiwo lwekhemikhali: I-Formic acid (HCOOH): Yi-carboxylic acid elula enefomyula yekhemikhali i-HCOOH. Iqulathe iqela le-carboxyl (COOH), apho i-hydrogen incamathiselwe kwi-carbon kwaye enye i-oxygen yenza i-double bond ne-carbon. I-Sodium formate (HCCONA): Yityuwa yesodium ye...Funda ngokugqithisileyo»
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Isishwankathelo: Kwiminyaka yakutshanje, iingubo ezisekelwe emanzini zifumene ingqalelo enkulu ngenxa yobuhlobo bazo kwindalo esingqongileyo kunye nomxholo we-volatible organic compound (VOC) ophantsi. I-Hydroxyethylcellulose (HEC) yipolymer esetyenziswa kakhulu emanzini kwezi fomyula, esebenza njengesithambisi sokwandisa ...Funda ngokugqithisileyo»