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Cov khoom ntawm hollow iav microspheres thiab lawv cov khoom siv yas

Hollow iav microspheresyog cov txheej txheem tshwj xeeb iav microspheres, uas yog tshwj xeeb tshaj yog cov yam ntxwv ntawm qis ntom thiab tsis zoo thermal conductivity tshaj iav microspheres.Nws yog ib yam tshiab ntawm micron-scale lub teeb yuag khoom tsim nyob rau hauv 1950s thiab 1960s.Nws cov khoom tseem ceeb yog borosilicate, nrog rau qhov loj me me ntawm 10 ~ 250μm thiab phab ntsa tuab ntawm 1 ~ 2μm;hollow iav hlaws muaj Nws muaj cov yam ntxwv ntawm siab compressive zog, siab melting point, siab resistivity, thiab thermal conductivity me me thiab thermal shrinkage coefficient.Nws yog lub npe hu ua "qhov chaw hnub nyoog khoom" nyob rau hauv lub xyoo pua 21st.Hollow iav microspheresmuaj qhov pom tseeb qhov hnyav txo thiab lub suab rwb thaiv tsev thiab thermal rwb thaiv tsev cov teebmeem, kom cov khoom muaj kev tiv thaiv kev ua haujlwm zoo thiab rov ua haujlwm dua, thiab tau siv dav hauv cov ntaub ntawv sib xyaw xws li iav fiber reinforced yas, dag marble, dag agate, thiab hauv petroleum kev lag luam, aerospace thiab aerospace kev lag luam., tshiab tsheb ciav hlau ceev ceev, tsheb thiab nkoj, thermal rwb thaiv tsev txheej thiab lwm yam kev lag luam tau zoo txhawb kev txhim kho ntawm kuv lub teb chaws txoj kev tshawb fawb thiab thev naus laus zis.Txhawm rau ua kom tau raws li qhov yuav tsum tau muaj ntawm dielectric tsawg, tsis tshua muaj poob thiab lub teeb yuag ntawm 5G cov ntaub ntawv sib txuas lus, hollow iav microspheres kuj ua lub luag haujlwm tseem ceeb vim lawv cov nqi qis thiab kev ua haujlwm zoo.

1 – Cov khoom xyaw

Tshuaj muaj pes tsawg leeg ntawm hollow iav microspheres (mass ratio)

SiO2: 50% -90%, Al2O3: 10% -50%, K2O: 5% -10%, CaO: 1% -10%, B2O3: 0-12%

2- Nta

xim dawb huv

Nws tuaj yeem siv dav hauv txhua yam khoom uas muaj qhov xav tau ntawm cov tsos thiab xim.

3- lub teeb ceev

Qhov ceev ntawm hollow iav microspheres yog hais txog ib feem kaum ntawm qhov ntom ntom ntawm cov khoom siv ib txwm siv.Tom qab sau, lub hauv paus hnyav ntawm cov khoom tuaj yeem txo qis, ntau cov resins tuaj yeem hloov tau thiab txuag tau, thiab cov nqi khoom yuav raug txo.

4-Lipophilicity

Hollow iav microspheres yog ib qho yooj yim rau ntub thiab tawg, thiab tuaj yeem ntim rau hauv cov thermosetting thermoplastic resins feem ntau, xws li polyester, epoxy resin, polyurethane, thiab lwm yam.

5-Liquidity zoo

Txij li thaum hollow iav microspheres yog me me spheres, lawv muaj fluidity zoo dua nyob rau hauv cov kua resins tshaj flake, koob los yog tsis tu ncua fillers, yog li lawv muaj zoo heev pwm filling kev ua tau zoo.Qhov tseem ceeb tshaj, cov me me microbeads yog isotropic, yog li tsis muaj qhov tsis zoo ntawm qhov tsis sib xws ntawm qhov sib txawv ntawm qhov sib txawv vim yog kev taw qhia, uas ua kom cov khoom ruaj khov ntawm cov khoom thiab yuav tsis warp.

6- Thermal thiab suab rwb thaiv tsev

Sab hauv ntawm hollow iav microspheres yog cov roj nyias, yog li nws muaj cov yam ntxwv ntawm lub suab rwb thaiv tsev thiab rwb thaiv tsev kub, thiab nws yog ib qho zoo heev muab tub lim rau ntau yam thermal rwb thaiv tsev thiab suab rwb thaiv tsev khoom.Cov khoom insulating ntawm hollow iav microspheres kuj tseem siv tau los tiv thaiv cov khoom los ntawm thermal shock tshwm sim los ntawm kev hloov ntawm cov cua kub ceev thiab ceev txias txias.Siab tshwj xeeb kuj thiab tsis tshua muaj dej nqus dej ua rau nws siv dav hauv kev tsim cov khoom siv hluav taws xob cable.

7- Kev nqus roj tsawg

Cov khoom ntawm tus kheej txiav txim siab tias nws muaj qhov tsawg tshaj plaws ntawm thaj chaw tshwj xeeb thiab qis roj nqus.Thaum siv cov txheej txheem, tus nqi ntawm cov resin tuaj yeem txo qis heev, thiab cov viscosity yuav tsis nce ntau txawm tias nyob rau hauv qhov kev xav tau ntawm cov nyiaj ntxiv, uas zoo heev txhim kho kev tsim khoom thiab kev ua haujlwm.Ua kom ntau lawm efficiency los ntawm 10% mus rau 20%.

8- Tsawg dielectric tsis tu ncua

Tus nqi Dk ntawm hollow iav microspheres yog 1.2 ~ 2.2 (100MHz), uas tuaj yeem txhim kho cov khoom siv hluav taws xob zoo.

Plastics rau hollow iav hlaws

(1) Rau kev hloov kho cov yas yas xws li nylon, PP, PBT, PC, POM, thiab lwm yam, nws tuaj yeem txhim kho fluidity, tshem tawm cov iav fiber ntau, kov yeej kev sib tsoo, txhim kho nplaim hluav taws, txo cov iav fiber ntau, thiab txo cov khoom siv. tus nqi.

(2) Kev ntim khoom nrog PVC, PP, PE, thiab ua cov ntaub ntawv profiled, cov kav dej thiab daim hlau tuaj yeem ua rau cov khoom muaj kev ruaj ntseg zoo, txhim kho kev nruj thiab kub ua haujlwm kub, txhim kho cov nqi ntawm cov khoom, txhim kho kev tsim khoom thiab txo cov nqi.

(3) Kev ntim hauv PVC, PE thiab lwm yam cables thiab insulating sheath cov ntaub ntawv tuaj yeem txhim kho cov khoom kub tsis kam, rwb thaiv tsev, acid thiab alkali tsis kam thiab lwm yam khoom thiab cov khoom ua haujlwm, ua kom cov zis ntau ntxiv thiab txo cov nqi.

(4) Sau cov epoxy resin tooj liab clad phaj tuaj yeem txo cov viscosity ntawm cov resin, ua kom lub zog khoov, txhim kho nws lub cev thiab cov khoom siv, ua kom cov iav hloov pauv kub, txo qhov dielectric tas li, txo cov dej nqus, thiab txo tus nqi. .

(5) Kev sau nrog cov polyester tsis tuaj yeem txo qis tus nqi qis thiab ntxuav cov khoom ntawm cov khoom, txhim kho qhov hnav tsis kam thiab tawv, thiab muaj cov kab noj hniav tsawg dua thaum lamination thiab txheej.Nws yog siv rau FRP cov khoom, polishing log, cov cuab yeej, thiab lwm yam.

(6) Filling nrog silicone resin tuaj yeem txhim kho lub cev thiab cov khoom siv dag zog, thiab kev ntim ntau tuaj yeem txo tus nqi, uas yog cov khoom siv zoo tshaj plaws rau kev tsim cov pwm.


Post lub sij hawm: May-30-2022