Disadvantages ntawm lwm cov ntaub ntawv skylight
(1) Qhov tsis zoo ntawm lub rooj tsavxwm PC: lub zog tsis zoo, tsis zoo ntawm qhov khawb tsis kam, yooj yim kev laus thiab yellowing nyob rau hauv UV irradiation, loj coefficient ntawm thermal expansion, siab installation nqi thiab nyuaj dej to tiv thaiv kev kho mob.
(2) Qhov tsis zoo ntawm Pvc phaj: cov cua kub tsis zoo, qhov muag muag yog 80 ° C, decomposing thiab discoloring ntawm 130 degrees, thiab nag lossis daus ntawm HCI yog teeb meem rau tib neeg lub cev. Plasticizers thiab antiaging agents nyob rau hauv PVC cov ntaub ntawv yog tshuaj lom thiab phem phem los ntawm ib puag ncig.
(3) Cov iav tsis zoo: kev tu tus kheej tsis zoo, yooj yim stained nrog plua plav, thiab yuav tsum tau ntxuav tsis tu ncua; Nws yog ib qho nyuaj, nkig thiab yooj yim tawg. Nws tus kheej tawg tus nqi yog 0.3 feem pua , thiab cov tawg yog ntse thiab yooj yim rau cov neeg mob; High installation nqi thiab qeeb kev tsim kho ceev; Lub teeb muaj kuab paug yog qhov hnyav, nrog pom pom lub teeb pom kev hauv tsev thiab pom qhov ci ntsa iab sab nraum zoov; Kev siv hluav taws xob siab thiab siab thermal conductivity, txog 0.7W / (mk).
Vim li cas lub vaj huam sib luag zoo FRP skylight nkig? Nws puas yuav cuam tshuam rau kev siv skylight?
1. Ntxiv rau kev xaiv cov yeeb yaj kiab zoo UV resistant thiab cov khoom siv zoo, qhov kev kho kom zoo ntawm lub teeb pom kev zoo hauv nruab hnub kuj yog ib qho tseem ceeb. Tom qab kev sim, qhov kho kom zoo ntawm Yijia nruab hnub teeb pom kev zoo tau mus txog ntau dua 95 feem pua; Internal molecular qauv yog ib tug ze li ntawm cov qauv network, uas yog heev ruaj khov, thiab nws yog ib qho nyuaj heev los cuam tshuam los ntawm sab nraud ultraviolet rays, dej vapor, acid thiab alkali tshuaj. Vim tias tom qab qhov kev kho kom zoo ntawm lub hnub ci teeb pom kev zoo, nws cov hardness thiab mechanical zog (tensile zog, dabtsi yog khoov zog, thiab lwm yam) kuj yuav txhim kho.
2. Raws li cov khoom siv hauv tsev, lub hnub ci teeb pom kev zoo yuav tsum xub muaj qhov nruj thiab khoov lub zog kom ntseeg tau tias me me deformation nyob rau hauv lub zog sab nraud. Qhov no tuaj yeem zam qhov tsis ua haujlwm ntawm sealant thiab kev kho dej tsis zoo vim yog kev quab yuam sab nraud, thiab tiv thaiv dej kom zoo.
3. Txhawm rau ua kom lub zog ntawm ntau lub hnub ci vaj huam sib luag hauv tsev, ib qho yas (xws li softener) yog ntxiv rau cov hnub ci vaj huam sib luag. Cov khoom siv no tuaj yeem ua rau lub hnub ci teeb pom kev zoo, tab sis nws yuav muaj kev cuam tshuam zoo rau lub zog. Ntxiv mus, nws precipitates rau saum npoo ntawm lub hnub ci board tom qab ib lub sij hawm ntawm lub sij hawm. Nws kuj yog ib qho carcinogen siab, uas tau raug txwv nruj rau txawv teb chaws, tshwj xeeb tshaj yog nyob rau hauv EU lub teb chaws. Ntxiv mus, tom qab ntxiv plasticizer (softener), kev laus ua hauj lwm thiab kev pab cuam lub neej ntawm nruab hnub nrig board yuav txo tau heev, uas yog tantamount rau haus tshuaj lom kom quench nqhis dej.
4. Ua ib feem ntawm cov qauv steel, nws yog nruj me ntsis txwv tsis pub kauj ruam ntawm lub hnub ci board. Thaum lub sij hawm tuav thiab hoisting ntawm lub hnub ci board nyob rau hauv lub ru tsev, raws li txoj kev ua hauj lwm kom raug thiab ib txwm bending deformation ntawm lub hnub ci board, nws yuav tsis ua kev puas tsuaj rau lub hnub ci board. Peb lub tuam txhab tau muab cov lus qhia cuam tshuam.
Txhawm rau ua kom tiav, peb tuaj yeem tso siab tau tias lub rooj tsavxwm hloov pauv tau thiab tsis muaj kev cuam tshuam rau kev ua haujlwm ib txwm siv ntev npaum li nws tau teem ib txwm.