labarai

Babban sinadaran abun da ke ciki na beads masu iyo shine oxide na silicon da aluminum, wanda abun ciki na silicon dioxide shine kusan 50-65%, kuma abun ciki na aluminum oxide shine kusan 25-35%.Domin narkewa batu na silica ne kamar yadda high as 1725 ℃ da na alumina ne 2050 ℃, su ne duk high refractory kayan.Sabili da haka, beads masu iyo suna da ƙarfin gaske, gabaɗaya har zuwa 1600-1700 ℃, yana mai da su kyakkyawan aiki mai ƙarfi.Hasken nauyi, rufin thermal.Katangar katako mai yawo bakin ciki ce kuma maras kyau, kogon ba shi da sarari, kadan ne kawai na iskar gas (N2, H2 da CO2, da sauransu), kuma yanayin zafi yana da sannu a hankali kuma kadan ne.Saboda haka, beads masu iyo ba kawai haske ba ne a cikin nauyi (nauyin girma 250-450 kg / m3), amma kuma yana da kyau a cikin rufin thermal (0.08-0.1 thermal conductivity a dakin da zazzabi), wanda ya kafa harsashi don taka muhimmiyar rawa. a fagen hasken thermal insulation kayan.

Babban taurin da ƙarfi.Saboda ƙwanƙwasa mai iyo shine jikin gilashi mai wuya wanda aka kafa ta hanyar silica alumina ma'adinai lokaci (quartz da mullite), taurinsa zai iya kaiwa Mohs 6-7, ƙarfin matsa lamba na iya isa 70-140mpa, kuma ainihin girmansa shine 2.10-2.20g / cm3. , wanda yayi daidai da na dutse.Saboda haka, beads masu iyo suna da ƙarfi sosai.Gabaɗaya, kayan ƙura ko ɓoyayyen haske kamar su perlite, dutsen tafasa, diatomite, sepiolite da faɗaɗa vermiculite suna da ƙarancin tauri da ƙarfi.Samfurori masu rufewa na thermal ko kayan haɓakar haske waɗanda aka yi daga gare su suna da lahani na ƙarancin ƙarfi.Rashin gazawar su shine kawai ƙarfin ƙwanƙwasa masu iyo, don haka beads masu iyo suna da fa'idodi masu fa'ida da fa'ida.Girman barbashi yana da kyau kuma takamaiman yanki yana da girma.Girman yanayi na beads masu iyo shine 1-250 μ M. Ƙayyadaddun yanki na musamman shine 300-360cm2 / g, kama da na siminti.Don haka, ana iya amfani da beads masu iyo kai tsaye ba tare da niƙa ba.

Fineness iya saduwa da bukatun daban-daban kayayyakin, sauran sauki thermal rufi kayan ne kullum manyan barbashi size (kamar perlite, da dai sauransu.), idan nika zai ƙwarai ƙara iya aiki, sabõda haka, thermal rufi ne ƙwarai rage.A wannan yanayin, beads masu iyo suna da fa'ida.Kyakkyawan rufin lantarki.Beads ɗin da ke iyo suna da kyaun kayan rufe fuska kuma marasa ƙarfi.Gabaɗaya, juriya na insulator yana raguwa tare da haɓakar zafin jiki, amma juriyar ƙwanƙwasa mai iyo yana ƙaruwa tare da haɓakar zafin jiki.Wannan fa'idar ba ta da wasu kayan rufewa.Sabili da haka, yana iya yin samfuran rufi a ƙarƙashin yanayin zafi mai girma.

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Lokacin aikawa: Fabrairu-01-2021