Izindaba

  • Amatebhe polyvinyl butyral

    I-resin yePolyvinyl butyral inokuhambisana okuphezulu impela, ukumelana okubandayo, ukumelana nomhuzuko, ukumelana ne-UV neminye imisebenzi. Inokunamathela okuhle kakhulu ngama-alloys, insimbi, izinkuni, ubumba, imikhiqizo ye-fiber, njll. I-resin yePolyvinyl butyral ingasetshenziswa njengezinto zokuvimbela ingilazi ethintekile. Okwe ...
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  • Indlela yokulungiselela i-polyvinyl butyral

    I-resin enemisebenzi eminingi eyenziwe ngokuhlangana kwamakhemikhali kwe-polyvinyl butyral, futhi emelana nemisebe ye-ultraviolet, amanzi, uwoyela nokuguga. Iyancibilika kumethanoli, i-ethanol, amaketoni, ama-alkanes angama-halogenated, ama-solvents anamakha .. Inokuhambisana okuhle nama-phthalates, i-benzene sebacate plasticizers, ...
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  • Ukusetshenziswa kokugcina kwe-boron nitride enezinhlangothi

    I-hexagonal boron nitride (h-bn) ceramics ibalulekile izinto zokuxhumana zama-microwave emkhakheni we-aerospace, kepha i-h-bn iyinhlanganisela yebond covalent ene-coefficient yokuziphilisa yokuziphilisa esezingeni eliphansi futhi enzima. Imvamisa ilungiswa ngokushiswa ngokucindezela okushisayo. Ngaphandle kokunezelwa okufanele ...
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  • Umehluko phakathi kwe-boron nitride enezinhlangothi eziyisithupha ne-graphite emhlophe

    Isakhiwo se-crystal se-boron nitride enezinhlangothi eziyisithupha ne-graphite sibonakala ngesakhiwo esifana ne-graphite esifana nesendlalelo. Izici zemishini, i-boron nitride yinto ethambile. Ubulukhuni bayo be-Mohs, noma kunjalo, buthinta ubulukhuni bomkhiqizo ocindezelweyo wokuqukethwe kwe-B2O3 kanye ne-proportiona ...
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  • I-BHT, INDLELA EPHEPHILE YOKUSEBENZISA I-ANTIOXIDANT

    I-BHT, isichazamazwi seButylHydroxyToluene, iyisithako esisetshenziswa emikhakheni eminingi. Kuyasiza ukugcina ikhwalithi yokudla kanye nokwenza ngcono ukulondolozwa kwamasampuli wesidoda ezinhlotsheni ezihlukene zezilwane nezinhlobo zabantu. Kulokhu, kusetshenziswa izakhiwo ezilwa namagciwane, ngaphezu kwe-classical ...
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  • Ukuziphatha kwenjoloba yemvelo ezimeni ze-oxidative

    Irabha yemvelo (i-CN), umkhiqizo osuselwa ku-latex we-Hevea brasiliensis, waziwa ngezinto zawo zomshini, ezinye zazo eziphakeme kunalezo ezincintisana nazo zokwenziwa. Kodwa-ke, izinga eliphakeme lokungagcini i-poly (cis-1,4-isoprene) lenza ukuthi lithinteke ku-thermo-oxidation. Amandla ...
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  • IKUSASA LOMUSI

    Ngo-1975, ososayensi be-BASF uWerner Hoffman noKarl von Fraunberg bamemezela ukutholakala kwamakhemikhali anamakha ngephunga elifudumele, elinuka kamnandi lamanzi nezithelo nezitrobheli. Bayibiza nge-Cyclomusk, kepha ayizange ibe yimpumelelo ngoba yayingakwazi ukuncintisana neGalaxolide. Okuthuthukayo ...
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  • Ukutholwa Nokusetshenziswa KweMacrocyclic Musk kanye ne-polycyclic musk

    Ososayensi nabenzi bamakha bebazi okuningi nge-macrocyclic musk kusukela ngawo-1920, kufaka phakathi nomsebenzi kaProfesa Leopold Ruzicka (1922-1926), kepha lokhu kwakubiza kakhulu ukukhiqizwa ngobuningi. Ngemuva kweMpi Yezwe II, osokhemisi baqala ukuthola izindlela ezishibhile zokuthola iphunga le-musk yemvelo. ...
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  • I-Chromite yethusi - Izicelo ezijwayelekile nokusetshenziswa

    I-chromite yethusi iyinhlanganisela yezimbiwa ezingaphili ezibalulekile ezimbonini eziningi. Kuvame ukubizwa ngofulawa we-chromium, i-chromite powder noma ufulawa we-chromite. Ukwakheka kwamakhemikhali kweCuCr2O4. Le nhlanganisela incanyelwa izicelo eziningi zezimboni ngenxa yokushisa kwayo okukhulu, resista ...
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  • Yini i-chromite yethusi nokuthi ungayenza kanjani

    I-chromite yethusi iyinhlanganisela engaphili enefomula Cu 2 Cr 2 O 5 esetshenziselwa ukuvuselela ukusabela kokuhlanganiswa kwezinto eziphilayo. Indaba le yachazwa okokuqala ngonyaka we-1908. I-catalyst yasungulwa eNyakatho Melika nguHomer Burton Adkins noWilbur Arthur Lazier ngokwengxenye ekuphenyweni kweGerm ...
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  • Iyini inqubo ethize yokuphendula lapho i-ammonium perchlorate isetshenziswa njengophethiloli we-shuttle space?

    Isiphekepheke sisebenzisa i-metallic aluminium ne-ammonium perchlorate, i-NH4ClO4, njengophethiloli oqinile wamarokhethi asetshenziswayo. I-equation equation yempendulo ithi: 3 Al (s) + 3 NH4ClO4 (s) barb2rightAl2O3 (s) + AlCl3 (s) + 3 NO (g) + 6 H2O (g) Ingxube yokuphendula iqukethe u-5.75 g we-Al no-7.32 g we-NH4C ...
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  • Yini i-Ammonium Perchlorate?

    Ama-Perchlorates atholakala emvelweni ngezindlela ezimbili ezihlukile, kungaba sesimweni esiqinile (lapho amanzi engekho) noma ancibilikiswe emanzini. Izindawo ezinamazinga aphezulu we-perchlorate yizifunda zaseWest Texas naseNyakatho Chile. Ama-Perchlorates ayiqembu lama-athomu akhokhiswe kabi akhiwe ...
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