Mica Daim Ntawv Thov hauv Cov Resin thiab Yas Kev Lag Luam

(1) Hloov Cov Khoom Siv Optical ntawm Plastics

Mica chips tuaj yeem muaj kev cuam tshuam thiab faib duab ci duab ci raws li kev nqus thiab tiv thaiv UV, thiab lwm yam Yog li ntawd, yog tias ntxiv cov av ntub dej zoo nkauj mica rau hauv cov duab ua liaj ua teb, nws yuav nyuaj rau lub teeb tawm mus tom qab nkag mus rau hauv, yog li khaws cov cua sov rau hauv tsev cog khoom thiab daim teb yas zaj duab xis, etc. Hauv daim ntawv thov no, cov qauv purity thiab flaky ntawm mica hmoov yog qhov tseem ceeb heev. Ntawm ib sab tes, impurities yuav txo mica ntawm nws cov kev ua kom zoo dua qub, cuam tshuam nws cov kev pom zoo, nce qib huab li no thiab txo lub teeb nkag ntawm lub tsev cog khoom. Ntawm qhov tod tes, yog tias mica tsis zoo hauv cov qauv flaky, tom qab ntawd nws cov nyhuv cuam tshuam ntawm infrared tawg kuj tsis zoo. Gansu Gelan Chemical Technology Co., Ltd., ntawm Hong Kong Lee Group puas tau siv cov av ntub dej mica los ua cov zaj duab xis ntawm kev ua liaj ua teb, tsuas yog ua kom nws cov pob tshab qis li 2% xwb.

Tshuaj, tshuaj pleev ib ce, khoom noj thiab lwm yam khoomxav kom tiv thaiv kev tiv thaiv hluav taws xob, tshwj xeeb tshaj yog ultraviolet hluav taws xob, txhawm rau txhim kho lawv cov kev cia khoom. Txhawm rau ua qhov no, peb tuaj yeem ntxiv cov ntsej muag zoo nkauj flake-qauv av ntub mica hmoov rau hauv lawv cov ntaub ntawv ntim yas. Cov ntawv mica loj-loj tuaj yeem txhim kho cov lus ntawm cov ntaub ntawv (cov nyhuv pearlescent), thiab cov hmoov zoo mica tuaj yeem tshem tawm cov luster. 

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(2) Txhim Kho Cov Huab Cua-Ceev ntawm Plastics

Ntub av mica hmoov muaj qhov zoo heev nyias cov ntaub ntawv, nrog cov tuab hauv nanometers thiab lub taub-thickness piv txog 80 ~ 120 npaug, yog li muaj qhov thaiv tau zoo heev. Cov huab cua-nruj ntawm cov yas yuav ntau zog tom qab ntxiv hauv kev ua haujlwm zoo thiab muaj cov siab-ntshiab purity ntub mica. Xws li cov plastics, raws li cov ntawv sau patent, tuaj yeem siv los ua Coke fwj, npias fwj, tshuaj fwj tshuaj, cov khoom pov thawj ya raws ntim khoom raws li muaj ntau yam tshwj xeeb zoo xws li cov ntawv ntim khoom yas.

(3) Txhim Kho Cov Khoom Siv Lub Cev thiab Khoom Siv ntawm Plastics

Flaky thiab fibrous fillers tuaj yeem txiav txim siab qhov kev ntxhov siab ntawm cov ntaub ntawv, uas zoo ib yam li cov hlau khov ruaj khov hauv cov pob zeb ua vaj tsev thiab cov khoom siv anisotropic hauv ntau cov ntaub ntawv txhim kho (yas, roj hmab, roj hmab, thiab lwm yam). Nws daim ntawv thov feem ntau nyob hauv cov roj carbon fiber, tab sis carbon fiber ntau kim thiab txwv nyob rau hauv luster, yog li ntawd, nws nyuaj rau nws tso rau hauv daim ntawv thov.

Asbestos yog siv nruj me ntsis hauv daim ntawv thov rau nws tuaj yeem tau ua rau mob cancerCov. Ultra-nplua iav fiber (piv txwv li, txoj kab uas hla ntawm 1 micron lossis hauv qib nanometer) ntsib ntau yam teeb meem hauv kev tsim khoom thiab nws cov nqi kuj tseem nce siab. Granular muab tub lim, suav nrog micron quartz hmoov thiab kaolin hmoov uas muaj ntau hauv cov av qhuav mica tsis muaj cov haujlwm no zoo li xuab zeb thiab pob zeb hauv cov pob zeb ua vaj tse.Tsuas yog thaum ntxiv cov muab tub lim li ntub dej hauv av mica hmoovuas yog siab hauv qhov taub-thickness piv, lub zog tensile, kev cuam tshuam lub zog, elastic modulus, lwm yam khoom siv kho tshuab, lub cev ruaj khov (xws li tshav kub denaturation thiab anti-torsion qaug zog creep hloov tau), thiab kev coj los tiv thaiv kev coj yuav ua kom zoo dua qub.Kuj muaj ntau qhov kev kawm txog qhov no tau ua hauv Cov Khoom Siv Science. Ib qhov tseem ceeb yog qhov ntau thiab tsawg ntawm cov ntawv sau.

Plastics (piv txwv li, roj hmab) yog txwv nyob rau hauv cov nqe lus ntawm hardness lawv tus kheej. Ntau hom kev lim dej (piv txwv li, talc hmoov) muaj qis heev hauv lawv lub zog txhua yam. Ntawm qhov tsis sib xws, ua ib qho ntawm cov khoom siv ntawm granite, mica tau zoo heev hauv kev nyuaj thiab lub zog txhua yam. Yog li no, los ntawm kev ntxiv mica hmoov ua cov muab tub lim nyob rau hauv plastics, qhov hloov kho zoo yuav muaj qhov hnyav heev. Kev ua haujlwm siab ntawm lub taub-thickness yog qhov tseem ceeb rau kev ua kom zoo dua ntawm kev ua kom siab-purity mica hmoov.

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Kev sib xyaw ua ke ntawm mica hmoov muaj lub luag haujlwm tseem ceeb hauv daim ntawv thov saum toj no rau nws tuaj yeem txhim kho cov tshuaj lom neeg kev ntseeg ntawm cov ntaub ntawv, yog li txhim kho txoj kev ua haujlwm ntawm cov ntaub ntawv. Qhov kev sib txuas tsim kho tseem yog tus yuam sij rau kev txhim kho cov cuab yeej ntawm mica hmoov, yog li tsis hloov pauv cov txheej txheem crystallization ntawm resin. Kev siv cov hmoov ua kom muaj hmoov mica zoo tuaj yeem ua rau cov khoom hnyav. Cov tshuab no tau siv dav hauv kev lag luam plastics, xws li hauv kev tsim cov khoom lag luam siab, suav nrog cov khoom seem ntawm cov tshuab thiab tsheb, cov khoom siv hauv av, cov tawv nqaij sab nraud ntawm cov khoom siv hauv tsev, ntim khoom, siv txhua hnub, thiab lwm yam.

(4) Kev Txhim Kho Cov Insulating Khoom ntawm Cov Khoom Yas

Mica muaj qhov hluav taws xob ua kom muaj zog heev, yog li nws yog qhov ua tau zoo insulating cov ntaub ntawv nws tus kheej. Kev siv mica los txhim kho cov rwb thaiv cov cuab yeej ntawm cov khoom siv yog cov thev naus laus zis zoo. Rau kev tsim cov khoom siv hluav taws xob yas siab ua haujlwm, kev ua haujlwm muab tub lim ntub dej hauv av mica tuaj yeem muab ntxiv rau. Raws li tau teev tseg saum toj no, mica siab hauv cov hlau cov ntsiab lus yuav tsum raug zam rau nws qhov ua tsis muaj txheej txheem. Av qhuav mica tsis tau ntxuav kuv thiab yog siab hauv cov hlau cov ntsiab lus, yog li nws tsis tsim rau siv.

Daim ntawv thov ntawm cov av ntub mica hauv plastics tsuas yog tshaj li qhov ntawd. Ua tag nrho kev siv ntawm cov khoom siv tshwj xeeb ntawm cov av ntub mica hmoov, ntau cov khoom lag luam yas muaj txiaj ntsig tshiab thiab cov ntawv thov thev naus laus zis tuaj yeem tsim tawm. Piv txwv li, los ntawm kev ntxiv cov hmoov mica rau hauv plastics, luam ntawv kev ua tau zoo thiab cov khoom sib txuas ua ke tuaj yeem hloov kho; los ntawm kev tso SnO2 rau saum npoo lossis los yog plated nrog hlau, mica hmoov yuav muaj kev coj ua thiab tuaj yeem siv los ua cov khoom lag luam tiv thaiv zoo li qub thiab cov yas ua paug; los ntawm kev coj los nrog TiO2, mica yuav pearlescent pigment thiab tuaj yeem siv hauv ntau daim ntawv thov; los ntawm kev ua xim, mica yuav yog cov xim zoo nkauj; mica tuaj yeem tseem txhim kho lub lubrication kev ua tau zoo ntawm cov khoom.


Sijhawm Tshaj Tawm: Lub Rau Hli-23-2020