Tsib yog vim li cas xaiv yas rau Tarpaulin ntau lawm
Yog vim li cas vim li cas lub tarpaulin xaiv cov khoom ntawm cov yas, raws li kev soj ntsuam ntawm cov neeg muaj feem, muaj tsib lub laj thawj, uas yog:
1. Kev ua tau zoo ntawm cov hluav taws xob rwb thaiv tsev: Ordinary plastics yog cov khoom siv hluav taws xob tsis zoo, thiab lawv qhov kev tiv thaiv saum npoo thiab ntim tsis kam yog qhov loj heev, uas tuaj yeem ncav cuag 109 txog 1018 ohms hauv digital sawv cev. Lub zog tawg yog loj, thiab tus nqi dielectric poob tangent yog me me. Yog li ntawd, plastics muaj ntau yam kev siv hauv electronics thiab machinery industries. Xws li yas insulated tswj cables.
2. Lub teeb yuag: Yas yog cov khoom sib zog, thiab nws cov txheeb ze ntom ntom ntawm 0.90 thiab 2.2. Obviously, cov yas puas tuaj yeem ntab rau saum npoo? Hauv particular, foamed plastics yog sib dua nyob rau hauv kev ntxhib los mos thiab muaj ib tug txheeb ze ntom ntawm tsuas yog 0.01 vim lub micropores nyob rau hauv lawv. Cov cuab yeej no tso cai rau cov yas siv rau hauv kev tsim cov khoom uas yuav tsum tau txo qhov hnyav.
3. Cov khoom siv hluav taws xob tsis zoo muaj lub luag haujlwm ntawm kev txo suab nrov thiab kev poob siab: Feem ntau hais lus, thermal conductivity ntawm plastics yog qhov tsawg, uas yog sib npaug rau 1/75-1/225 ntawm cov hlau, thiab cov micropores ntawm foam plastics. Nws muaj cov pa roj, thiab nws cov rwb thaiv tsev kub, suab rwb thaiv tsev thiab kev poob siab kuj zoo dua. Piv txwv li, thermal conductivity ntawm polyvinyl chloride (PVC) tsuas yog 1/357 ntawm cov hlau thiab 1/1250 ntawm txhuas. Nyob rau hauv cov nqe lus ntawm thermal rwb thaiv tsev, ib lub iav yas qhov rais yog 40% siab dua ib lub iav txhuas qhov rais, thiab ob chav iav qhov rais yog 50% siab dua.
4. Kev ruaj ntseg tshuaj zoo heev: feem ntau ntawm cov yas muaj kev tiv thaiv zoo rau cov kua qaub, alkalis thiab lwm yam tshuaj lom neeg.
5. Kev faib tawm dav ntawm txhua yam muaj zog thiab muaj zog tshwj xeeb: qee cov yas yog tawv xws li pob zeb thiab hlau, thiab qee qhov yog mos xws li ntawv thiab tawv; los ntawm cov khoom siv ntawm cov yas xws li hardness, tensile lub zog, elongation thiab cuam tshuam lub zog, Kev faib tawm dav, muaj ntau chav rau kev xaiv. Vim yog qhov tshwj xeeb me me thiab lub zog siab ntawm cov yas, nws muaj lub zog tshwj xeeb.