Cov iav microspheres hollow yog cov iav microspheres uas tau ua tiav tshwj xeeb, uas feem ntau yog tus cwj pwm los ntawm qhov ceev qis dua thiab tsis zoo thermal conductivity dua li iav microspheres. Nws yog ib hom tshiab ntawm micron-scale lightweight khoom tsim nyob rau hauv xyoo 1950 thiab 1960. Nws cov khoom tseem ceeb yog borosilicate, nrog rau qhov loj me ntawm 10 ~ 250μm thiab phab ntsa tuab ntawm 1 ~ 2μm; hollow iav hlaws dai muaj Nws muaj cov yam ntxwv ntawm siab compressive zog, siab melting point, siab resistivity, thiab me me thermal conductivity thiab thermal shrinkage coefficient. Nws yog hu ua "qhov chaw hnub nyoog khoom" nyob rau hauv lub xyoo pua 21st. Cov iav microspheres hollow muaj qhov hnyav txo qis thiab suab rwb thaiv tsev thiab cov teebmeem rwb thaiv tsev thermal, yog li cov khoom muaj kev ua tau zoo tiv thaiv kev tawg thiab kev ua haujlwm rov ua dua, thiab siv dav hauv cov ntaub ntawv sib xyaw xws li iav fiber reinforced yas, marble dag, agate dag, nrog rau hauv kev lag luam roj av, aerospace thiab aerospace kev lag luam. , tsheb ciav hlau ceev ceev tshiab, tsheb thiab nkoj, thermal rwb thaiv tsev coatings thiab lwm yam teb tau txhawb nqa kev txhim kho ntawm kuv lub teb chaws txoj kev tshawb fawb thiab kev siv tshuab. Yuav kom ua tau raws li qhov xav tau ntawm dielectric qis, poob qis thiab lub teeb yuag ntawm 5G kev sib txuas lus cov ntaub ntawv, hollow iav microspheres kuj ua lub luag haujlwm tseem ceeb vim lawv tus nqi qis thiab kev ua tau zoo.
1 – Cov Khoom Xyaw
Cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov iav hollow microspheres (qhov sib piv ntawm pawg)
SiO2: 50% -90%, Al2O3: 10% -50%, K2O: 5% -10%, CaO: 1% -10%, B2O3: 0-12%
2- Cov yam ntxwv
xim dawb huv
Nws tuaj yeem siv dav hauv cov khoom uas muaj qhov yuav tsum tau ua ntawm qhov tsos thiab xim.
3- lub teeb ntom ntom
Qhov ceev ntawm cov iav microspheres hollow yog li ib feem kaum ntawm qhov ceev ntawm cov khoom siv filler ib txwm muaj. Tom qab sau, qhov hnyav ntawm cov khoom tuaj yeem txo qis heev, ntau cov resins tsim tawm tuaj yeem hloov thiab txuag tau, thiab tus nqi khoom tuaj yeem txo qis.
4-Kev ua kom lub cev tsis muaj zog
Cov iav microspheres hollow yooj yim rau ntub thiab tawg, thiab tuaj yeem sau rau hauv feem ntau thermosetting thermoplastic resins, xws li polyester, epoxy resin, polyurethane, thiab lwm yam.
5-Kev ua lag luam zoo
Vim tias cov iav microspheres hollow yog cov spheres me me, lawv muaj cov kua dej zoo dua li cov flake, koob lossis cov khoom tsis sib xws, yog li lawv muaj kev ua tau zoo heev ntawm kev sau pwm. Qhov tseem ceeb tshaj, cov microbeads me me yog isotropic, yog li tsis muaj qhov tsis zoo ntawm cov nqi shrinkage tsis sib xws hauv ntau qhov chaw vim yog kev taw qhia, uas ua kom ntseeg tau tias qhov ntev ntawm cov khoom thiab yuav tsis warp.
6- Kev rwb thaiv tsev thermal thiab suab
Sab hauv ntawm cov iav microspheres hollow yog cov roj nyias nyias, yog li nws muaj cov yam ntxwv ntawm kev rwb thaiv suab thiab kev rwb thaiv cua sov, thiab nws yog ib qho khoom zoo heev rau ntau yam khoom rwb thaiv cua sov thiab cov khoom rwb thaiv suab. Cov khoom rwb thaiv tsev ntawm cov iav microspheres hollow kuj tseem siv tau los tiv thaiv cov khoom los ntawm kev poob siab thermal los ntawm kev hloov pauv ntawm kev kub ceev thiab kev txias ceev. Kev tiv thaiv tshwj xeeb siab thiab kev nqus dej tsawg heev ua rau nws siv dav hauv kev tsim cov ntaub ntawv rwb thaiv tsev cable.
7- Kev nqus roj tsawg
Cov khoom me me ntawm lub pob zeb txiav txim siab tias nws muaj qhov chaw me tshaj plaws thiab qhov nqus roj tsawg. Thaum lub sijhawm siv, cov resin tuaj yeem txo qis heev, thiab qhov viscosity yuav tsis nce ntau txawm tias nyob rau hauv qhov kev ntxiv ntau, uas ua rau cov xwm txheej tsim khoom thiab kev ua haujlwm zoo dua. Ua kom muaj txiaj ntsig zoo dua los ntawm 10% txog 20%.
8- Tsis tu ncua dielectric qis
Tus nqi Dk ntawm cov iav hollow microspheres yog 1.2 ~ 2.2 (100MHz), uas tuaj yeem txhim kho cov khoom dielectric ntawm cov khoom siv.
Cov yas rau cov hlaws iav hollow
(1) Rau kev hloov kho cov yas engineering xws li nylon, PP, PBT, PC, POM, thiab lwm yam, nws tuaj yeem txhim kho kev ua haujlwm, tshem tawm cov iav fiber raug, kov yeej kev ua tsis zoo, txhim kho kev ua haujlwm nplaim taws, txo kev siv iav fiber, thiab txo cov nqi tsim khoom.
(2) Kev sau nrog PVC, PP, PE, thiab tsim cov ntaub ntawv profiled, cov kav dej thiab cov phaj tuaj yeem ua rau cov khoom muaj kev ruaj khov zoo, txhim kho kev ruaj khov thiab kub tiv taus kub, txhim kho kev ua tau zoo ntawm cov khoom, txhim kho kev ua haujlwm ntawm cov khoom thiab txo cov nqi.
(3) Kev sau rau hauv PVC, PE thiab lwm yam cables thiab cov ntaub ntawv insulating sheath tuaj yeem txhim kho cov khoom kub tsis kam, rwb thaiv tsev, acid thiab alkali tsis kam thiab lwm yam khoom thiab kev ua haujlwm ntawm cov khoom, nce cov zis thiab txo cov nqi.
(4) Kev sau cov epoxy resin tooj liab clad phaj tuaj yeem txo qhov viscosity ntawm cov resin, ua rau lub zog khoov, txhim kho nws cov khoom siv lub cev thiab cov khoom siv kho tshuab, ua rau qhov kub hloov pauv iav nce, txo qhov dielectric tas li, txo qhov nqus dej, thiab txo tus nqi.
(5) Kev sau nrog cov polyester tsis muaj roj tuaj yeem txo qhov nrawm thiab dej ntxuav ntawm cov khoom, txhim kho kev hnav tsis kam thiab qhov tawv, thiab muaj qhov tsawg dua thaum lamination thiab txheej. Nws yog siv rau cov khoom FRP, cov log polishing, cov cuab yeej, thiab lwm yam.
(6) Kev sau nrog silicone resin tuaj yeem txhim kho cov khoom siv lub cev thiab cov khoom siv kho tshuab, thiab ntau qhov kev sau tuaj yeem txo tus nqi ntau heev, uas yog cov khoom siv zoo tagnrho rau kev tsim cov pwm.
Lub sijhawm tshaj tawm: Tsib Hlis-30-2022