Ma microspheres agalasi opanda kanthu Ndi ma microspheres agalasi okonzedwa mwapadera, omwe amadziwika kwambiri ndi kutsika kwa kachulukidwe komanso kutentha kochepa kuposa ma microspheres agalasi. Ndi mtundu watsopano wa zinthu zopepuka za micron-scale zomwe zidapangidwa m'ma 1950 ndi 1960. Gawo lake lalikulu ndi borosilicate, yokhala ndi kukula kwa tinthu tating'onoting'ono ta 10 ~ 250μm ndi makulidwe a khoma la 1 ~ 2μm; mikanda yagalasi yopanda kanthu ili ndi mawonekedwe a mphamvu yokakamiza kwambiri, malo osungunuka kwambiri, kukana kwakukulu, komanso kutentha pang'ono komanso kutentha kochepa. Imadziwika kuti "zinthu za nthawi ya mlengalenga" m'zaka za m'ma 2000. Ma microspheres agalasi opanda kanthu ali ndi mphamvu zochepetsera kulemera komanso kutchinjiriza mawu komanso kutchinjiriza kutentha, kotero kuti zinthuzi zimakhala ndi mphamvu zabwino zotsutsana ndi kusweka komanso kubwezeretsanso, ndipo zimagwiritsidwa ntchito kwambiri pazinthu zopangidwa ndi zinthu zosiyanasiyana monga pulasitiki yolimbikitsidwa ndi ulusi wagalasi, marble wopangira, agate wopangira, komanso m'makampani opanga mafuta, mafakitale a ndege ndi ndege. , sitima zatsopano zothamanga kwambiri, magalimoto ndi zombo, zokutira zotchinjiriza kutentha ndi madera ena zathandizira kwambiri chitukuko cha ntchito zasayansi ndi ukadaulo mdziko langa. Pofuna kukwaniritsa zofunikira za zida zolumikizirana za 5G zotsika mtengo, kutayika kochepa komanso kulemera kopepuka, ma microspheres agalasi opanda kanthu nawonso amasewera gawo lofunika kwambiri chifukwa cha mtengo wawo wotsika komanso magwiridwe antchito abwino.
1 - Chosakaniza
Kapangidwe ka mankhwala a ma microspheres agalasi lopanda kanthu (chiŵerengero cha kulemera)
SiO2: 50% -90%, Al2O3: 10% -50%, K2O: 5% -10%, CaO: 1% -10%, B2O3: 0-12%
2- Zinthu Zapadera
mtundu woyera weniweni
Itha kugwiritsidwa ntchito kwambiri pazinthu zilizonse zomwe zili ndi zofunikira pa mawonekedwe ndi mtundu.
3- kachulukidwe ka kuwala
Kuchuluka kwa ma microspheres agalasi opanda kanthu ndi gawo limodzi mwa magawo khumi a kuchuluka kwa tinthu tachikhalidwe todzaza. Pambuyo podzaza, kulemera kwa chinthucho kumatha kuchepetsedwa kwambiri, ma resin ambiri opangira amatha kusinthidwa ndikusungidwa, ndipo mtengo wa chinthucho ungachepetsedwe.
4-Kuchuluka kwa mafuta m'thupi (lipophilicity)
Magalasi ozungulira opanda kanthu ndi osavuta kunyowetsa ndi kufalitsa, ndipo amatha kudzazidwa mu ma resins ambiri a thermosetting thermoplastic, monga polyester, epoxy resin, polyurethane, ndi zina zotero.
5-Kukhala ndi ndalama zokwanira
Popeza ma microspheres agalasi opanda kanthu ndi ma sphere ang'onoang'ono, amakhala ndi kusinthasintha kwabwino mu ma resin amadzimadzi kuposa ma flake, singano kapena ma filler osakhazikika, kotero ali ndi magwiridwe antchito abwino kwambiri odzaza nkhungu. Chofunika kwambiri, ma microbeads ang'onoang'ono ndi isotropic, kotero palibe vuto la kuchepa kosasinthasintha m'magawo osiyanasiyana chifukwa cha mawonekedwe, zomwe zimatsimikizira kukhazikika kwa chinthucho ndipo sichidzapindika.
6- Kuteteza kutentha ndi phokoso
Mkati mwa ma microspheres opanda kanthu agalasi ndi mpweya woonda, kotero uli ndi mawonekedwe a kutchinjiriza mawu ndi kutchinjiriza kutentha, ndipo ndi chodzaza chabwino kwambiri cha zinthu zosiyanasiyana zotchinjiriza kutentha ndi kutchinjiriza mawu. Mphamvu zotchinjiriza za ma microspheres opanda kanthu agalasi zingagwiritsidwenso ntchito kuteteza zinthu ku kutentha komwe kumachitika chifukwa cha kutentha mofulumira komanso kuzizira mwachangu. Kukana kwakukulu komanso kutsika kwambiri kwa madzi kumapangitsa kuti igwiritsidwe ntchito kwambiri popanga zipangizo zotchinjiriza chingwe.
7- Kuchepa kwa mafuta
Tinthu tating'onoting'ono ta m'mphepete mwa nyanja timatsimikizira kuti ili ndi malo ochepa kwambiri komanso kuchuluka kochepa kwa mafuta omwe amayamwa. Pakugwiritsa ntchito, kuchuluka kwa utomoni kumatha kuchepetsedwa kwambiri, ndipo kukhuthala sikudzawonjezeka kwambiri ngakhale patakhala kuti pali kuchuluka kwakukulu kowonjezera, zomwe zimapangitsa kuti zinthu ziyende bwino komanso momwe zimagwirira ntchito. Kuonjezera mphamvu ya kupanga ndi 10% mpaka 20%.
8- Chokhazikika cha dielectric chochepa
Mtengo wa Dk wa ma microspheres agalasi lopanda kanthu ndi 1.2 ~ 2.2 (100MHz), zomwe zingathandize bwino kukonza mphamvu za dielectric za chinthucho.
Mapulasitiki a mikanda yagalasi yopanda kanthu
(1) Pakusintha mapulasitiki aukadaulo monga nayiloni, PP, PBT, PC, POM, ndi zina zotero, zimatha kusintha kusinthasintha kwa madzi, kuthetsa kuwonekera kwa ulusi wagalasi, kuthana ndi kupotoka, kukonza magwiridwe antchito oletsa moto, kuchepetsa kugwiritsa ntchito ulusi wagalasi, ndikuchepetsa ndalama zopangira.
(2) Kudzaza ndi PVC yolimba, PP, PE, komanso kupanga zinthu zokhazikika, mapaipi ndi mbale kungapangitse kuti zinthuzo zikhale zokhazikika bwino, kulimbitsa kulimba komanso kutentha kosagwirizana ndi kutentha, kukonza magwiridwe antchito a zinthu, kukonza magwiridwe antchito opangira ndikuchepetsa ndalama.
(3) Kudzaza PVC, PE ndi zingwe zina ndi zinthu zotetezera kutentha kwa chinthucho kungathandize kupirira kutentha kwambiri, kutchinjiriza, kukana asidi ndi alkali ndi zinthu zina komanso kugwira ntchito bwino kwa chinthucho, kuwonjezera kutulutsa ndi kuchepetsa ndalama.
(4) Kudzaza mbale ya epoxy resin yamkuwa kungachepetse kukhuthala kwa utomoni, kuonjezera mphamvu yopindika, kukulitsa mphamvu zake zakuthupi ndi zamakanika, kuonjezera kutentha kwa kusintha kwa galasi, kuchepetsa nthawi zonse ya dielectric, kuchepetsa kuyamwa kwa madzi, ndikuchepetsa mtengo.
(5) Kudzaza ndi polyester yosakhuta kungathandize kuchepetsa kuchepa kwa madzi ndi kutsuka kwa chinthucho, kuonjezera kukana kuwonongeka ndi kuuma, komanso kukhala ndi mabowo ochepa panthawi ya lamination ndi kupaka utoto. Imagwiritsidwa ntchito pazinthu za FRP, mawilo opukutira, zida, ndi zina zotero.
(6) Kudzaza ndi silicone resin kungathandize kukonza zinthu zakuthupi ndi zamakaniko, ndipo kudzaza kwakukulu kungachepetse mtengo, zomwe ndi zinthu zabwino kwambiri zopangira nkhungu.
Nthawi yotumizira: Meyi-30-2022