Kev faib tawm ntawm kev siv
Kev faib tawm ntawm kev siv
Raws li qhov sib txawv ntawm cov khoom siv ntawm ntau cov khoom, plastics yog feem ntau muab faib ua peb hom: dav hlau, engineering plastics thiab cov khoom tshwj xeeb.
General plastics
Feem ntau yog hais txog kev siv loj, dav siv, zoo formability, pheej yig yas. Muaj tsib hom kev dav hlau, namely polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) thiab acrylonitrile butadiene styrene copolymer (ABS). Cov tsib hom ntawm cov khoom uas siv los txheeb xyuas ntau tshaj ntawm cov khoom siv yas khoom siv, qhov yooj yim tuaj yeem muab cais ua cov yas tshwj xeeb ntau yam, xws li: PPS, PPO, PA, PC, POM thiab lwm yam, lawv nyob hauv txhua txhua hnub hauv lub me me tus nqi ntawm cov khoom, uas yog siv hauv kev lag luam ntawm kev tsim vaj tse, Lub teb chaws tiv thaiv kev lag luam thiab technology kev lag luam thiab lwm cov qib siab, xws li automotive, aerospace, architecture, communications and other fields. Plastics tuaj yeem raug tso npe rau hauv thermoplastics thiab thermosets raws li lawv lub hnab yas. Feem ntau, cov khoom siv thermoplastic tuaj yeem txua tau, thiab cov thermosetting plastics tsis yog, raws li cov khoom ntawm cov khoom ntawm plastics rau cov ntsiab lus, muab faib ua cov pob tshab, translucent thiab opaque khoom, PS, PMMA, AS thiab PC yog cov yas pob tshab , thiab feem ntau lwm yam yas yog ua los ntawm cov tshuaj tiv thaiv opaque.
Cov khoom thiab kev siv ntawm cov khoom ua si
1. Polyethylene: feem ntau siv cov polyethylene tau muab faib ua cov tsawg ntom polyethylene (LDPE), high density polyethylene (HDPE) thiab linear low density polyethylene (LLDPE). Ntawm peb qho, HDPE tau zoo dua thermal cov cuab yeej, cov khoom hluav taws xob thiab cov khoom siv dag zog, thaum LDPE thiab LLDPE tau zoo dua qhov yooj yim, yam khoom thiab zaj duab xis tsim cov khoom. LDPE thiab LLDPE tsuas yog siv rau kev ntim zaj duab xis, kev ua liaj ua teb, kev kho yas thiab lwm yam, thaum HDPE plhuav siv ntau lub teb, xws li zaj duab xis, yeeb nkab, txhaj tshuaj txhua hnub thiab lwm yam.
2: kuj hais lus, polypropylene PP ntau ntau, siv tseem muaj ntau yam, ntau qhov chaw, muaj ntau hom polypropylene homopolymer (homopp), polypropylene thaiv copolymer (copp) thiab polypropylene (Rapp), raws li ntau lub hom phiaj, tau siv Cov khoom siv hlau, cov yeeb-tshuaj, cov yeeb-tshuaj, cov yeeb-tshuaj, cov khoom siv, cov yeeb-yaj-kiab thiab lwm yam khoom siv, cov khoom siv hluav taws xob, ..
3. PVC: vim tias nws tsis tshua tus nqi, qhov khoom muaj tus yam ntxwv ntawm nws tus kheej qhov hluav taws xob, yog li nws tau siv rau hauv kev tsim kho, tshwj xeeb tshaj yog cov kav dej phwj, cov yas qhov rooj thiab lub qhov rais, cov tais, cov tawv tawv thiab lwm yam siv feem ntau lug siv.
4. Polstyrene: raws li cov khoom siv pob tshab, thaum tus neeg xav tau, ntau qhov kev siv, xws li tsheb ntxoov ntxig, niaj hnub pob tshab, koob khob, cov kaus poom thiab lwm yam.
5.ABS yog cov khoom siv hlau uas siv dav hlau, siv cov khoom siv hluav taws xob thiab cov thermal, uas yog siv cov cuab yeej siv hauv vaj hauv tsev, vaj huam sib luag, lub looj ntsej muag, lub rooj sib txuas, thiab lwm yam khoom siv, xws li tshuab ntxhua khaub ncaws, cua txias, , tus nqi loj heev, rau lwm qhov hloov kho yas, daim ntawv thov nws yog qhov dav heev.
Engineering yas
Feem ntau, nws muaj peev xwm dais qee yam quab yuam sab nraud, muaj kev sib raug zoo thiab kev kub thiab tsis kub, kev ruaj ntseg zoo, siv tau los ua engineering structures ntawm plastics, xws li polyamide, polysulfone thiab hais txog. Hauv cov khoom ua haujlwm hauv engineering, nws muaj peev xwm raug faib ua ob pawg: dav dav engineering thiab plastics engineering. Cov khoom siv hluav taws xob ua hauv kev ua kom tau zoo, ua kom ntev, ua kom tsis muaj zog, ua kom sov dua thiab lwm yam yuav ua tau zoo dua, thiab ua kom yooj yim dua thiab hloov tau cov ntaub ntawv hlau. Cov khoom siv hluav taws xob yog siv hauv hluav taws xob, hluav taws xob, tsheb, lub tsev, cov khoom siv ua haujlwm, machinery, aerospace thiab lwm yam lag luam, kom tsis muaj hlau, yas siv ntoo tsis tau ua qauv thoob ntiaj teb.
General engineering plastics xws li: polyamide, POM, polycarbonate, hloov polyphenylene oxide, thermoplastic polyester, ultra high molecular nyhav polyethylene, methyl vinyl polymer, yas cawv copolymer, etc ..
Cov khoom siv hlau tshwj xeeb kuj muaj qhov crosslinking uas tsis yog hom kab uas tsis yog crosslinking. Cov hom ntoo uas muaj crosslinking yog poly amino bis maleic amide, poly s triazine, crosslinked polyimide, cov thawv kub-resistant epoxy resin nti, thiab lwm yam .. Cov kab hom tsis muaj crossbinded yog polysulfone, polyether sulfone, polyphenylene sulfide, polyimide, PEEK, etc ..
Plastics tshwj xeeb
Feem ntau yog hais txog kev tshwj xeeb, siv tau rau hauv aviation, aerospace thiab lwm yam ntawv tshwj xeeb ntawm plastics. Xws li cov tshuaj fluorine thiab silicone muaj cov tshuaj tiv thaiv rau kev kub, qhov lubrication thiab lwm yam tshwj xeeb functions, thiab txhim khu cov yas thiab ua npuas yas nrog lub siab zog, siab tsis thiab lwm yam khoom tshwj xeeb, cov khoom no muaj rau qeb ntawm cov khoom tshwj xeeb.
