Mica powder ndi mchere wopanda zitsulo womwe uli ndi zigawo zingapo, makamaka SiO2, zomwe zimakhala pafupifupi 49% ndi Al2O3 zomwe zili pafupi ndi 30%.Mica ufa ali ndi elasticity yabwino komanso kulimba.Ndi chowonjezera chabwino kwambiri chokhala ndi mawonekedwe monga kutchinjiriza, kukana kutentha kwambiri, kukana kwa asidi ndi alkali, kukana dzimbiri, komanso kumamatira mwamphamvu.Amagwiritsidwa ntchito kwambiri m'mafakitale monga zida zamagetsi, ma elekitirodi owotcherera, mphira, mapulasitiki, kupanga mapepala, utoto, zokutira, utoto, zoumba, zodzola, zomangira zatsopano, ndi zina zambiri.Ndi chitukuko chosalekeza cha sayansi ndi luso lamakono, anthu atsegula njira zatsopano zogwiritsira ntchito.Mica powder ndi silika wosanjikiza wopangidwa ndi zigawo ziwiri za silica tetrahedra zomangidwa ndi wosanjikiza umodzi wa aluminiyamu okusayidi octahedra, kupanga gulu la silica wosanjikiza.Kuphwanyidwa kwathunthu, komwe kumatha kugawanika kukhala mapepala owonda kwambiri, okhala ndi makulidwe mpaka 1 μ Pansi pa m (mwachidziwitso, amatha kudulidwa mpaka 0.001) μ m) ndi mainchesi okulirapo mpaka makulidwe;Mankhwala a mica powder crystal ndi: K0.5-1 (Al, Fe, Mg) 2 (SiAl) 4O10 (OH) 2 ▪ NH2O, general chemical composition: SiO2: 43.13-49.04%, Al2O3: 27.93-37.44% , K2O+Na2O: 9-11%, H2O: 4.13-6.12%.

Mica ufa ndi wa makhiristo a monoclinic, omwe ali mu mawonekedwe a mamba ndipo amakhala ndi silky luster (muscovite ili ndi galasi lowala).midadada koyera ndi imvi, wofiirira duwa, woyera, etc., ndi m'mimba mwake kwa makulidwe chiŵerengero cha> 80, mphamvu yokoka yeniyeni 2.6-2.7, kuuma kwa 2-3, elasticity mkulu, kusinthasintha, bwino kuvala kukana ndi kuvala kukana. ;Kutchinjiriza kosamva kutentha, zovuta kusungunuka muzosakaniza za acid-base, komanso kukhazikika kwamankhwala.Deta yoyesera: zotanuka modulus 1505-2134MPa, kukana kutentha 500-600 ℃, matenthedwe matenthedwe 0.419-0.670W.(mK), kutchinjiriza magetsi 200kv/mm, radiation kukana 5 × 1014 matenthedwe neutroni/masentimita kuwala.

Komanso, mankhwala zikuchokera, kapangidwe, ndi kapangidwe mica ufa ndi ofanana ndi kaolin, komanso ali ndi makhalidwe ena a mchere dongo, monga kubalalitsidwa wabwino ndi kuyimitsidwa mu amadzimadzi TV ndi organic solvents, woyera mtundu, particles zabwino, ndi kukakamira.Chifukwa chake, ufa wa mica uli ndi mawonekedwe angapo a mchere wa mica ndi dongo.

Kuzindikiritsa kwa mica powder ndikosavuta.Kutengera ndi zomwe mwakumana nazo, nthawi zambiri pamakhala njira zotsatirazi zongotengera kokha:

1, Kuyera kwa mica powder sikuli kwakukulu, pafupifupi 75. Nthawi zambiri ndimalandira mafunso kuchokera kwa makasitomala, ponena kuti kuyera kwa mica powder kuli pafupi ndi 90. Muzochitika zodziwika bwino, kuyera kwa mica powder sikumakhala kwakukulu, kokha kuzungulira 75. Ngati doped ndi fillers ena monga calcium carbonate, talc ufa, etc., woyera adzakhala bwino kwambiri.

2, Mica ufa ali ndi mawonekedwe osalala.Tengani beaker, onjezerani 100ml ya madzi oyera, ndikugwedeza ndi ndodo yagalasi kuti muwone kuti kuyimitsidwa kwa ufa wa mica ndikwabwino kwambiri;Zodzaza zina zimaphatikizapo ufa wowonekera, talc ufa, calcium carbonate ndi zinthu zina, koma kuyimitsidwa kwawo sikwabwino kwambiri ngati ufa wa mica.

3. Ikani pang'ono pa dzanja lanu, lomwe lili ndi ngale pang'ono.Mica ufa, makamaka ufa wa sericite, uli ndi mphamvu inayake ya ngale ndipo umagwiritsidwa ntchito kwambiri m'mafakitale monga zodzoladzola, zokutira, mapulasitiki, mphira, ndi zina zotero.

Ntchito zazikulu za mica ufa mu zokutira.

Kugwiritsa ntchito mica powder mu zokutira kumawonekera makamaka muzinthu izi:

1. Zolepheretsa: Zodzaza ngati mapepala zimapanga dongosolo lokhazikika lofanana mkati mwa filimu ya utoto, ndipo kulowa kwa madzi ndi zinthu zina zowononga mufilimu ya penti kumatsekedwa mwamphamvu.Pamene ufa wapamwamba wa sericite umagwiritsidwa ntchito (chiŵerengero cha m'mimba mwake ndi makulidwe a chip ndi nthawi zosachepera 50, makamaka nthawi zopitirira 70), nthawi yolowera madzi ndi zinthu zina zowononga kudzera mufilimu ya utoto nthawi zambiri imawonjezedwa katatu.Chifukwa chakuti sericite ufa fillers ndi otsika mtengo kwambiri kuposa utomoni wapadera, iwo ali apamwamba kwambiri luso ndi chuma mtengo.Kugwiritsiridwa ntchito kwa sericite ufa wapamwamba ndi njira yofunikira yopititsira patsogolo ubwino ndi machitidwe a anti-corrosion zokutira ndi zokutira kunja kwa khoma.Panthawi yopaka, tchipisi ta sericite timavutitsidwa ndi filimu ya penti isanayambe kulimba, ndikungopanga mawonekedwe omwe amafanana wina ndi mnzake komanso pamwamba pa filimu ya utoto.Chosanjikiza ichi ndi chosanjikiza kakonzedwe kake, komwe kamayang'ana ndendende komwe zinthu zowononga zimadutsa mufilimu ya utoto, zimakhala ndi chotchinga chothandiza kwambiri.
2. Kupititsa patsogolo mawonekedwe a thupi ndi makina a filimu ya penti: Kugwiritsa ntchito ufa wa sericite kungapangitse mndandanda wazinthu zakuthupi ndi zamakina za filimu ya utoto.Mfungulo ndi mawonekedwe a morphological a chodzaza, chomwe ndi kuchuluka kwa mainchesi mpaka makulidwe a chodzaza ngati pepala ndi kutalika mpaka m'mimba mwake chiŵerengero cha fibrous filler.Zodzaza granular, monga mchenga ndi miyala mu konkriti, zimagwira ntchito yolimbikitsa kulimbikitsa zitsulo.
3. Kupititsa patsogolo kukana kwa filimu ya utoto: Kulimba kwa utomoni wokha kumakhala kochepa, ndipo mphamvu ya zodzaza zambiri sizikhalanso zapamwamba (monga talc powder).M'malo mwake, sericite ndi chimodzi mwa zigawo za granite, ndi kuuma kwakukulu ndi mphamvu zamakina.Chifukwa chake, kuwonjezera ufa wa sericite ngati chodzaza mu zokutira kumatha kusintha kwambiri kukana kwake.Zopaka zamagalimoto zambiri, zokutira zamsewu, zokutira zamakina zoletsa dzimbiri, ndi zokutira pakhoma zimagwiritsa ntchito ufa wa sericite.
4. Insulation performance: Sericite imakhala ndi kukana kwambiri ndipo ndiyokhayo yomwe imateteza bwino kwambiri.Amapanga chophatikizika chokhala ndi organic silicon resin kapena organic silicon boron resin ndikuchisintha kukhala chinthu cha ceramic chokhala ndi mphamvu zamakina abwino komanso ntchito yotsekera mukakumana ndi kutentha kwambiri.Choncho, mawaya ndi zingwe zopangidwa ndi mtundu woterewu zimasungabe malo awo oyambirira ngakhale atapsa ndi moto.Ndikofunikira kwambiri kwa migodi, tunnel, nyumba zapadera, malo apadera, etc.
5. Cholepheretsa moto: Sericite ufa ndi wofunika kwambiri woletsa moto.Ngati aphatikizidwa ndi organic halogen retardants lawi, zotchingira moto ndi zotchingira moto zitha kukonzedwa.
6. UV ndi infrared resistance: Sericite imagwira bwino ntchito poteteza ku ultraviolet ndi infrared radiation.Chifukwa chake kuwonjezera ufa wa sericite wonyowa pazovala zakunja kumatha kusintha kwambiri kukana kwa UV kwa filimu ya utoto ndikuchedwetsa kukalamba kwake.Ntchito yake yotchinga infrared imagwiritsidwa ntchito pokonzekera zotchingira ndi zotchingira (monga zokutira).
7. Kutentha kwa kutentha ndi zokutira zotentha kwambiri: Sericite ili ndi mphamvu yabwino ya radiation ya infrared, monga kuphatikiza ndi iron oxide, yomwe ingapangitse zotsatira zabwino kwambiri za kutentha.
8. Kutsekemera kwa phokoso ndi kugwedeza kwamphamvu: Sericite ikhoza kusintha kwambiri mndandanda wa zinthu zakuthupi, kupanga kapena kusintha maonekedwe awo.Mtundu uwu wa zinthu efficiently zimatenga kugwedera mphamvu, kufooketsa mafunde kugwedera ndi phokoso mafunde.Kuphatikiza apo, kuwunikira mobwerezabwereza kwa mafunde akugwedezeka ndi mafunde amawu pakati pa tchipisi ta mica kumachepetsanso mphamvu zawo.Sericite ufa umagwiritsidwanso ntchito popanga zotchingira zotsekereza mawu, zotsekereza mawu, komanso zokutira zomwe zimachititsa mantha.