Laminated plastics: khoom thiab kev siv

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Cov khoom sib xyaw tshwj xeeb yog siv rau hauv cov txheej txheem rwb thaiv tsev ntawm cov khoom siv nyuaj thiab cov qauv uas yuav tsum tau ua kom ua haujlwm tau zoo. Raws li txoj cai, cov no tsis yog universal, tab sis cov khoom tshwj xeeb, tsom mus ua haujlwm hauv huab cua kub thiab av noo. Xws li cov insulators muaj xws li laminates hauv qab no: getinax, textolite, fiberglass, nrog rau lawv cov kev hloov kho. Vim yog kev sib xyaw ua ke ntawm lub zog thiab thermal rwb thaiv tsev zoo, cov khoom sib xyaw no tuaj yeem siv rau hauv cov qauv, cov khoom siv thiab cov khoom siv uas muaj lub luag haujlwm rau lawv lub hom phiaj.

Laminated applications

Ntau yam ntawm cov ntawv thov rau cov polymers no muaj ntau haiv neeg. Qhov no suav nrog cov cuab yeej siv tshuab, tshuab aviation, kev lag luam tsim khoom, nrog rau kev tsim kho thiab kev lag luam tshuaj. Txhua qhov chaw uas yuav tsum tau siv hluav taws xob rwb thaiv tsev, cov khoom siv yog sivyam zoo li no. Nyob rau tib lub sijhawm, ib tus tsis tuaj yeem hais txog lawv txoj kev thoob ntiaj teb. Muaj ntau yam kev hloov kho uas cov laminates tau nthuav tawm. Daim ntawv thov ntawm txhua lub version ntawm qhov muaj pes tsawg leeg tsom rau ib cheeb tsam tshwj xeeb. Piv txwv li, getinaks yog qhov tsim nyog rau kev tsim cov khoom pheej yig hauv cov khoom siv hluav taws xob, thiab cov ntaub ntawv ntoo-laminated yog siv rau hauv kev siv tshuab vim lawv cov qauv nruj. Kev ua haujlwm ntawm textolite yog qhov dav heev, uas suav nrog kev lag luam hluav taws xob thiab petrochemical complexes, nrog rau kev ntsuas me me.

laminates ua los ntawm dab tsi?

Laminated yas yog cov khoom sib xyaw ua ke raws li cov ntaub ntawv polymer. Txhawm rau ntxiv dag zog rau lub hauv paus kev ua haujlwm, txheej txheej los ntawm txheej reinforcing filling kuj tseem siv. Hauv lwm lo lus, laminates yog kev sib xyaw ua ke ntawm ob lub ntsiab lus uas sawv cev los ntawm cov ntawv khi thiab cov muab tub lim. Synthetic resins yog siv los ua thawj cov khoom xyaw. Nws tuaj yeem yog polyester, epoxy, phenol-formaldehyde thiab lwm yam tshuaj. Kev siv cov polymers kuj yog dav, ntawm cov uas yog organosilicon thiab fluoroplastic cov ntaub ntawv. Raws li kev sau, txoj haujlwm no tuaj yeem ua los ntawm cov khoom siv raw hauv daim ntawv asbestos thiab cellulose ntawv fibers.

Laminated yas yam ntxwv

Nyob rau hauv classic version, laminate yog cov ntaub ntawv uas yog nteg zoo li cov pa cladding panels. tsawg zauscov ntaub so ntswg muaj ntau yam. Lub thickness ntawm cov nplooj ntawv tuaj yeem nyob ntawm 0.4 mus rau 50 mm, nyob ntawm seb hom thiab muaj pes tsawg leeg ntawm insulator. Kuj tseem muaj qhov sib txawv ntawm qhov ntev thiab qhov dav. Ib tug qauv fiberglass vaj huam sib luag, piv txwv li, muaj qhov nruab nrab qhov loj ntawm 1200x1000 mm. Cov kev ua haujlwm zoo uas muaj los ntawm cov yas laminated yog qhia los ntawm kev muaj peev xwm tiv taus qhov kub thiab txias. Ntxiv dua thiab, qhov nruab nrab txoj kev hauv tsev rau cov yas zoo li no txawv ntawm -60 ° C txog 120 ° C. Raws li kev suav nrog cov kev hloov pauv ntxiv, qhov no yuav nthuav dav.

Fiberglass khoom

Qhov kev ua tau zoo ntawm cov yas no yog txiav txim siab los ntawm nws cov muaj pes tsawg leeg, uas suav nrog ob peb txheej ntawm fiberglass, glued ua ke siv cov tshuab kub nias. Lub binder nyob rau hauv cov ntaub ntawv no yog ib tug thermosetting epoxyphenol tivthaiv. Cov yam ntxwv tseem ceeb ntawm cov laminates ntawm hom no suav nrog kev kub siab ua haujlwm, kev tiv thaiv los ntawm qhov tsis zoo ntawm cov av noo thiab lub zog txhua yam. Tsis tas li ntawd, tsis zoo li ntau cov khoom sib xyaw, fiberglass yog cov khoom siv hauv ib puag ncig, uas nthuav nws cov peev txheej. Tsis tas li ntawd, nws cov khoom siv hluav taws xob siab thiab ua haujlwm ntev ua rau nws qhov kev nyiam hauv kev ua lag luam.

Getinax khoom

Lwm qhov kev hloov pauv ntawm laminate siv los ua hluav taws xob insulator. Cov khoom ua haujlwm ntawm cov khoom sib xyaw no yog txiav txim siab los ntawm cov ntawv hauv paus, ua tiavKev sib xyaw ntawm phenolic lossis epoxy resins.

Cov yas no tsis muaj kev sib xyaw ua ke ntawm cov neeg kho tshuab lub zog thiab muaj peev xwm tiv taus qhov kub thiab txias. Txawm li cas los xij, lub machinability ntawm lub substrate tso cai rau tsim cov ntawv luam tawm Circuit Board ntawm txhua qhov loj. Tsis tas li ntawd, cov no yog cov txheej txheem pheej yig tshaj plaws, uas ua rau lawv siv dav hauv kev ntsuas. Cov khoom siv zoo li no, tshwj xeeb, tsim cov khoom siv rau kev txhawb nqa ntawm cov khoom siv hluav taws xob tsawg hauv tsev.

Textolite properties

Cov khoom yog tsim los ntawm cov paj rwb ntaub los ntawm kub nias nrog ntxiv ntawm thermosetting binders ntawm phenol-formaldehyde pawg. Nws yog kev siv lub hauv paus ntaub uas muab cov textolite nrog lub zog compressive siab, nrog rau kev cuam tshuam lub zog. Lub hauv paus yooj yim muab rau hauv kev ua los ntawm drilling, txiav thiab xuas nrig ntaus. Qhov zoo ntawm cov khoom siv no tau ua rau nws siv hauv kev tsim cov khoom siv thev naus laus zis uas nyob rau hauv kev cuam tshuam ntawm cov khoom siv hluav taws xob thiab khoom siv.

Tib lub sijhawm, muaj ntau pawg rau hauv cov khoom lag luam laminates tau faib. Cov khoom ntawm thawj qeb yog qhia nyob rau hauv daim ntawv ntawm kev nce hluav taws xob rwb thaiv tsev, uas tso cai rau cov khoom siv ob qho tib si hauv huab cua thiab hauv cov roj transformer. Cov qeb thib ob yog tus cwj pwm los ntawm kev ua kom muaj zog, yog li ntawd, cov khoom yas ntawm pawg no feem ntau yog ua los ntawm cov khoom uas raug rau lub cev loads. Kuj tseem muaj kev hloov kho tshwj xeeb.textolite, tsim los siv rau qhov kub siab.

Ntoo Laminate Properties

Qhov sib txawv tseem ceeb ntawm cov khoom siv insulating no yog kev siv lub hauv paus ntoo ua cov muab tub lim. Hauv particular, cov khoom sib xyaw yog ntxiv nrog cov nplooj ntawv ntawm cov veneer nrog lub thickness ntawm 0.3-0.6 hli. Cov khoom siv ntuj khi rau polymers los ntawm cov khoom siv hluavtaws resole. Raws li qhov tshwm sim, cov khoom sib xyaw ua ke tau txais kev txhim kho los tiv thaiv kev sib txhuam, kev tiv thaiv rau ib puag ncig hnyav thiab txawm tias abrasives uas lwm cov laminates tsis tuaj yeem tiv taus.

Cov khoom, daim ntawv thov thiab kev ua haujlwm hauv qhov no yog txiav txim siab los ntawm kev sib xyaw ua ke ntawm tag nrho cov yam ntxwv. Kev ua hauj lwm zoo ntawm cov khoom yog qhia tsis tau tsuas yog los ntawm lub cev kev ruaj ntseg, tab sis kuj los ntawm ya raws, dielectric qualities, raws li zoo raws li kev ruaj ntseg ntawm ultra-tsawg kub ntawm -250 ° C. Nyob rau hauv cov nqe lus ntawm kev siv, ntoo-laminated cov ntaub ntawv tau ntse ua ke rau hauv lub mechanisms ntawm kev sib txhuam units, tiaj bearings, hydraulic rooj vag thiab lwm yam technical systems.

Zaj lus

Niaj hnub nimno cov khoom sib xyaw yog tsim los nrog lub hom phiaj kom tau txais cov ntaub ntawv muaj zog uas tuaj yeem hloov qee cov hlau alloys. Yog li ntawd, kev tsim kho kev lag luam muaj peev xwm nrhiav tau lwm txoj hauv kev rau cov khoom siv dag zog hauv daim ntawv ntawm fiberglass rods. Nyob rau hauv lem, lub laminates tau uakev hloov zoo rau cov tsoos insulators. Lawv tsis siv qhov twg nws yog kev cai rau nteg pob zeb hauv av los yog cork panels, tab sis cov niches tshwj xeeb uas tsis muaj cov yam ntxwv ntawm cov khoom lag luam ntawm hom no tau nquag tsim cov txheej txheem tshiab polymers. Txawm li cas los xij, kev nkag mus rau yav tom ntej ntawm xws li insulators rau hauv cov khoom siv hauv tsev tsis suav nrog. Txawm li cas los xij, kev ua phooj ywg ib puag ncig ntawm fiberglass tuaj yeem ua rau qhov no.