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Nekufambira mberi kuri kuita indasitiri uye kuvandudzwa kwetekinoroji, kuburikidza nekuunzwa nekuvandudzwa kwemichina yekupfapfaidza yedhaka rekunze kwenyika, tekinoroji yekupfapfaidza nekuisa plasta yemuchina yave ichikura zvikuru munyika yangu mumakore achangopfuura. Dhaka rekupfapfaidza remuchina rave...Verenga zvakawanda»
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1. Hydroxypropyl methylcellulose instant type ipfu chena kana yero zvishoma, uye haina hwema, haina kunaka uye haina chepfu. Inogona kunyungudutswa mumvura inotonhora uye yakasanganiswa organic solvent kuti igadzire mhinduro yakajeka ine viscous. Mhinduro yemvura ine pamusoro...Verenga zvakawanda»
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Hydroxyethyl cellulose (HEC) chinhu chichena kana cheyero yakapfava, chisina hwema, chisina chepfu, chine fibrous kana kuti chakaita sehupfu. Chakagadzirwa nedonje rakagadzirwa kana kuti pulp yakacheneswa yakanyikwa mu30% yemvura inonyungudika. Mushure mehafu yeawa, chinobviswa chodzvanywa. Svina kusvika chiyero chemvura ine alkaline chasvika 1:2.8, wobva...Verenga zvakawanda»
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1. Ndeapi mabasa eupfu hwelatex hunonyungudika mumortar? Mhinduro: Upfu hwelatex hunonyungudika hunoumbwa mushure mekupararira uye hunoshanda sechinamira chechipiri kusimbisa chisungo; colloid inodzivirira inonyungudika nemortar system (haizonzi yaparadzwa mushure mekuumbwa. Kana kuti inobviswa...Verenga zvakawanda»
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Dhaka rakasanganiswa nemvura isimbi, musanganiswa wakatsetseka, mvura nezvimwe zvinhu zvakasiyana-siyana zvinosarudzwa zvichienderana nekushanda. Zvichienderana nechikamu chakati, mushure mekuyerwa nekusanganiswa muchiteshi chekusanganisa, rinotakurwa kuenda kunzvimbo yekushandisa nerori rekusanganisa, roiswa muchina wekugadzira mvura ...Verenga zvakawanda»
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Kusanganiswa kunoita basa guru mukuvandudza mashandiro ekuvaka dhaka rakasanganiswa nemvura, asi kuwedzerwa kwedhaka rakasanganiswa nemvura kunoita kuti mutengo wezvinhu zvakagadzirwa nedhaka rakasanganiswa nemvura wakakwira zvakanyanya kupfuura wedhaka rechinyakare, iro rinoita kuti pave neanopfuura 40% yemutengo wezvinhu zvakagadzirwa nedhaka rakasanganiswa nemvura...Verenga zvakawanda»
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Hydroxypropyl methylcellulose inogadzirwa kubva kucellulose yakachena kwazvo yedonje kuburikidza ne etherification yakakosha pasi pemamiriro e alkaline, uye maitiro ese anopedzwa nekutarisa otomatiki. Hainyungudike mu ether, acetone uye absolute ethanol, uye inokura kuita collo yakajeka kana kuti ine makore mashoma...Verenga zvakawanda»
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Huwandu hwakati hwehydroxypropyl methylcellulose ether hunochengetedza mvura mumota kwenguva yakakwana kuti simende irambe ichinyorova uye ivandudze kubatana pakati pemota nesubstrate. Mhedzisiro yehukuru hwezvikamu uye nguva yekusanganisa yeHydroxypropyl Methyl Cellulose Ether ...Verenga zvakawanda»
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Cellulose ether rudzi rwezvinhu zvinobva mupolymer yechisikigo, zvine hunhu hwe emulsification uye suspension. Pakati pemhando dzakawanda, HPMC ndiyo ine goho repamusoro uye ndiyo inonyanya kushandiswa, uye goho rayo riri kuwedzera nekukurumidza. Mumakore achangopfuura, nekuda kwekukura kwe...Verenga zvakawanda»
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Hydroxypropyl methylcellulose (HPMC) imhando ye non-ionic cellulose ether yakagadzirwa ne natural polymer material cellulose kuburikidza nemaitiro akasiyana-siyana emakemikari. Iupfu huchena husina hwema, husina kunaka uye husina chepfu hunozvimba kuita colloidal solution yakajeka kana ine makore mashoma mumvura inotonhora. Ine...Verenga zvakawanda»
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Upfu hweGypsum hunonamira (upfu hunoomesa nekukurumidza) (Recipe 1) Chiyero cheBinder (kg) Upfu hwelatex hunodzokororwa 5-5.5 Gypsum retarder 0.5-1 Paris plaster powder (kuchena kuri pamusoro pe85) 750 Calcium yakawanda (upfu hwefly fly) 250 Kunamatira kwakasimba, nguva yekuvhura maminetsi makumi maviri kusvika makumi matatu. Upfu hwakaoma ...Verenga zvakawanda»
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Non-ionic cellulose ether chinhu chakakosha chemakemikari chinodiwa neindasitiri yezvinhu zvekuvaka neindasitiri yekuputira. Parizvino, pasi pemamiriro ekuwedzera kuri kuramba kuchiitika muhuwandu hwese hweindasitiri yekuvaka yemumba uye kuwedzera kuri kuramba kuchiitika kwekuputira...Verenga zvakawanda»