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Umgubo wepolymer ophinda uqhekeke yi-powder dispersion ecutshungulwa ngokutshiza i-polymer emulsion eguquliweyo. Iyakwazi ukuphinda iqhekeke kwaye ingaphinda ixutywe ibe yi-polymer emulsion ezinzileyo emva kokongeza amanzi. Ukusebenza kufana nqwa ne-emulsion yokuqala. Ngenxa yoko, kunokwenzeka...Funda ngokugqithisileyo»
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Iimveliso zepowder yepolymer ephinda inyibilike ziipowder eziphinda zinyibilike emanzini, ezahlulwe zibe zii-ethylene/vinyl acetate copolymers, ii-vinyl acetate/tertiary ethylene carbonate copolymers, ii-acrylic copolymers, njl.njl. arhente, kunye ne-polyvinyl alcohol njenge-colloid ekhuselayo. Le powder ingakhawuleza...Funda ngokugqithisileyo»
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Kukho i-monosodium glutamate yemizi-mveliso, i-carboxymethyl cellulose, i-hydroxypropyl methyl cellulose, kunye ne-hydroxyethyl cellulose, ezisetyenziswa kakhulu. Phakathi kweentlobo ezintathu ze-cellulose, eyona inzima ukuyiqonda yi-hydroxypropyl methylcellulose kunye ne-hydroxyethyl cellulose. Masihlukanise...Funda ngokugqithisileyo»
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I-Hydroxypropyl methylcellulose yahlulwe yaba ziintlobo ezimbini: uhlobo oluqhelekileyo lwe-hot-melt kunye nohlobo olukhawulezayo lwamanzi abandayo. I-Hydroxypropyl methylcellulose isebenzisa i-1. Uthotho lwe-Gypsum Kwiimveliso zothotho lwe-gypsum, ii-cellulose ethers zisetyenziselwa kakhulu ukugcina amanzi kunye nokwandisa ukuthamba. Zidibene zibonelela ngesiqabu....Funda ngokugqithisileyo»
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I-Hydroxypropyl methylcellulose yinto esetyenziswa kakhulu. Ingakumbi ekusebenziseni i-putty powder. Kukho iimpawu ezininzi zemveliso ezifana: ukumelana netyuwa, umsebenzi womphezulu, i-thermal gelation, uzinzo lwe-PH, ukugcinwa kwamanzi, ukunamathela, njl. Nangona kunjalo, i-hydroxypropyl methylcellulose ikwanoku...Funda ngokugqithisileyo»
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Inkangeleko kunye neempawu ze-HPMC: umgubo omhlophe okanye ongekho mhlophe onamaqhina okanye onamaqhekeza Ubuninzi: 1.39 g/cm3 Ukunyibilika: phantse akunyibiliki kwi-ethanol epheleleyo, i-ether, i-acetone; ukudumba kube yisisombululo se-colloidal esicacileyo okanye esinamafu kancinci emanzini abandayo Uzinzo lwe-HPMC: I-solid iyatsha kwaye ayihambelani...Funda ngokugqithisileyo»
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Isalathisi se-viscosity se-hydroxypropyl methylcellulose sisalathisi esibaluleke kakhulu. I-viscosity ayimeli ubunyulu. I-viscosity ye-cellulose HPMC ixhomekeke kwinkqubo yemveliso. Iindawo ezahlukeneyo zokusetyenziswa kufuneka zikhethe i-cellulose HPMC ene-viscosities ezahlukeneyo, hayi ukuba i-vi...Funda ngokugqithisileyo»
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Yintoni umahluko phakathi kwe-hydroxypropyl methylcellulose (HPMC) ene-S okanye engenayo? 1. I-HPMC yahlulwe ngohlobo olukhawulezileyo nohlobo lokusasazwa olukhawulezayo lwe-HPMC uhlobo lokusasazwa olukhawulezileyo lufakwe unobumba u-S. Ngexesha lenkqubo yemveliso, kufuneka kongezwe i-glyoxal. Uhlobo olukhawulezileyo lwe-HPMC alufaki nanye...Funda ngokugqithisileyo»
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I-HPMC :HPMC 400 isetyenziswa kakhulu kwi-mortar yokuzilinganisa, kodwa ngokubanzi ingeniswa kwamanye amazwe. Isizathu: I-viscosity iphantsi, nangona ukugcinwa kwamanzi kuphantsi, kodwa i-leveling ilungile, kwaye uxinano lwe-mortar luphezulu. I-viscosity ephakathi nephantsi: hydroxypropyl methylcellulose HPMC 20000-40000 ...Funda ngokugqithisileyo»
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Umqhaphu ocociweyo—ukuvula—ukwenza i-alkalizing—ukwenza i-etherifying—ukungacoci—ukwahlula—ukuhlamba—ukwahlula, ukomisa—ukucoca—ukupakisha—ukuvula umqhaphu ogqityiweyo: umqhaphu ocociweyo uyavulwa ukuze kususwe isinyithi, uze emva koko ucocwe. Umqhaphu ocociweyo ocociweyo uluhlobo lomgubo, kwaye ubukhulu bawo bungama-80 mesh ...Funda ngokugqithisileyo»
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Kwinkqubo yokukhusela udonga lwangaphandle, ngokubanzi ibandakanya i-bonding mortar yebhodi yokukhusela kunye ne-plastering mortar ekhusela umphezulu webhodi yokukhusela udonga. I-bonding mortar elungileyo kufuneka ibe lula ukuyixuba, ilula ukuyisebenzisa, inganamatheli kwimela, kwaye ine-anti-rocking elungileyo. ef...Funda ngokugqithisileyo»
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I-Hydroxypropyl methylcellulose yinto eqhelekileyo kwishishini leekhemikhali zezixhobo zokwakha. Kwimveliso yemihla ngemihla, sinokuliva igama layo rhoqo. Kodwa abantu abaninzi abazi ukuba isetyenziswa njani. Namhlanje, ndiza kuchaza ukusetyenziswa kwe-hydroxypropyl methylcellulose kwiindawo ezahlukeneyo. 1. Ukwakhiwa ...Funda ngokugqithisileyo»