Foamed Polyethylene (35 Duab): Thev Naus Laus Zis Rau Kev Tsim Cov Polyethylene Ua Npuas Tsis Muaj Roj, Yam Ntxwv Thiab Daim Ntawv Thov, Hla Kev Sib Txuas Thiab Tsis Hla-txuas Poly

2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2024-01-18 12:13

Polyethylene yog thoob plaws, nrov thiab xav tau cov ntaub ntawv uas tau siv hauv ntau qhov chaw ntawm tib neeg kev ua. Txawm li cas los xij, tsis yog txhua tus neeg paub tias muaj ntau hom polyethylene sib txawv. Niaj hnub no hauv peb cov ntaub ntawv peb yuav tham txog hom khoom ua npuas, tau paub nrog nws cov yam ntxwv tshwj xeeb.

Cov khoom thiab cov yam ntxwv

Ua ntej tshaj plaws, koj yuav tsum nkag siab tias cov khoom yog dab tsi. Yog li, foamed polyethylene (polyethylene ua npuas ncauj, PE) yog cov khoom siv raws li ib txwm thiab paub zoo polyethylene . Txawm li cas los xij, tsis zoo li tus qauv ntau yam, hom ua npuas dej muaj cov qauv tshwj xeeb kaw-ntxeem tau. Ib qho ntxiv, nws yog ib qho tseem ceeb kom nco ntsoov tias ua npuas dej tau muab cais ua cov roj cua uas muaj cov thermoplastic polymer.

Yog tias peb tham txog lub sijhawm pom cov khoom ntawm lub khw, ces qhov no tau tshwm sim txog tsib caug xyoo dhau los . Txij thaum ntawd los, polyethylene ua npuas ncauj tau txais koob meej ntawm cov neeg siv. Niaj hnub no, kev tsim cov khoom lag luam ua tau raws li txhua tus txheej txheem thoob ntiaj teb, uas tau sau tawm hauv GOST.

Ua ntej koj txiav txim siab yuav thiab siv cov khoom siv, koj yuav tsum ntsuas thiab txheeb xyuas txhua qhov muaj cov yam ntxwv tshwj xeeb ntawm polyethylene . Nws yuav tsum tau nyob hauv siab tias cov khoom no tsis yog qhov zoo xwb, tab sis kuj tsis zoo. Txawm li cas los xij, lawv txhua tus tsim cov txheej txheem sib txawv ntawm cov khoom.

Yog li, qee qhov txiaj ntsig tuaj yeem suav nrog cov yam ntxwv tseem ceeb tshaj plaws ntawm ua npuas dej polyethylene.

Ua ntej tshaj plaws, nws yog qhov yuav tsum tau hais txog qhov kub hnyiab tau ntawm cov khoom . Yog li, thaum muaj huab cua kub nce mus txog +103 degrees Celsius, polyethylene yuav pib yaj (qhov ntsuas no yog hu ua "melting point"). Raws li, thaum ua haujlwm, koj yuav tsum nco ntsoov qhov zoo ntawm cov khoom.

Cov khoom siv tiv taus qhov kub tsawg . Yog li, cov kws tshaj lij tshaj tawm tias txawm tias qhov kub ib puag ncig poob qis dua -60 degrees Celsius, polyethylene tseem khaws cov yam ntxwv tseem ceeb xws li lub zog thiab kev ywj pheej.

Theem ntawm cov cua sov ua kom sov ntawm polyethylene yog qhov tsawg heev thiab nyob ntawm qib 0, 038-0, 039 W / m * K . Raws li, peb tuaj yeem tham txog qib siab ntawm rwb thaiv tsev cua sov.

Cov khoom siv nthuav tawm qib siab ntawm kev tiv thaiv rau ntau yam tshuaj lom neeg thiab khoom siv. Ib qho ntxiv, ib puag ncig kev ua haujlwm lom neeg tsis txaus ntshai rau nws.

Thaum lub sijhawm ua haujlwm ntawm polyethylene ua npuas ncauj, ib tus yuav tsum coj mus rau hauv tus account qhov tseeb tias cov khoom siv nws tus kheej muaj peev xwm nqus tau lub suab. Hauv qhov no, nws feem ntau siv los nruab cov suab kaw suab, cov koom haum thiab lwm qhov chaw uas xav tau lub suab rwb thaiv tsev.

PE tsis muaj cov khoom siv uas tuaj yeem tsim kev puas tsuaj rau tib neeg lub cev . Raws li, cov khoom siv tau tuaj yeem siv tsis muaj kev ntshai rau kev noj qab haus huv thiab lub neej (ob qho tib si koj tus kheej thiab koj cov neeg koj hlub). Ib qho ntxiv, txawm tias thaum lub sij hawm hlawv, cov khoom tsis tso tawm cov tshuaj lom.

Cov yam ntxwv tseem ceeb tshaj plaws ntawm polyethylene, ua tsaug uas nws tau nrov thiab xav tau ntawm cov neeg siv coob, yog qhov tseeb tias cov khoom tuaj yeem thauj tau yooj yim heev. Tsis tas li, lub luag haujlwm tseem ceeb tau ua los ntawm qhov tseeb tias polyethylene ua npuas ncauj tuaj yeem ntsia tau yooj yim.

PE yog cov khoom siv nrog qib siab ntawm kev hnav tsis kam . Raws li, peb tuaj yeem xaus tias nws yuav ua haujlwm rau koj rau lub sijhawm ntev. Yog tias peb sim kwv yees kwv yees qhov kev pab cuam lub neej ntawm cov khoom, tom qab ntawd nws yog kwv yees li 80-100 xyoo.

Thaum lub sijhawm ua haujlwm ntawm cov khoom siv, nws yog qhov yuav tsum tau coj mus rau hauv tus account qhov tseeb tias nws tau raug puas tsuaj los ntawm kev raug hluav taws xob ultraviolet. Raws li, kev siv cov khoom siv ncaj qha yuav tsum nyob hauv ib puag ncig tiv thaiv.

Ntau yam zoo ntawm cov xim, cov duab thiab hom kev kho kom zoo nkauj . Qhov nrov tshaj plaws thiab xav tau yog cov duab plaub fab hauv dub thiab dawb.

Lub thickness ntawm polyethylene tuaj yeem sib txawv. Qhov ntsuas no ua lub luag haujlwm tseem ceeb hauv kev xaiv cov khoom siv. Yog li, nyob ntawm koj qhov kev xav tau thiab kev nyiam, koj tuaj yeem xaiv PE nrog tuab 10 hli, 50 hli, 1 hli lossis 20 hli.

Ntxiv rau cov yam ntxwv ua haujlwm ntawm PE, nws yog ib qho tseem ceeb kawm kom ntxaws txog cov tshuaj lom neeg thiab lub cev ntawm PE (piv txwv li, cov khoom xws li ntom ntom ntom ntom, muaj peev xwm nqus dej noo, thiab lwm yam, ua lub luag haujlwm tseem ceeb). Ntawm qhov tshwj xeeb tshuaj thiab lub cev lub zog ntawm cov khoom yog:

• qhov ntsuas kub pom zoo rau siv cov khoom siv yog nyob ntawm thaj tsam ntawm -80 degrees Celsius mus rau +100 degrees Celsius (hauv lwm qhov kub, cov khoom poob nws cov yam ntxwv thiab qhov zoo);
• lub zog tuaj yeem yog 0.015 MPa txog 0.5 MPa;
• qhov ntom ntawm cov khoom yog 25-200 kg / m3;
• thermal conductivity Performance index - 0.037 W / m ib degree Celsius.

Kev siv tshuab ntau lawm

Vim qhov tseeb tias foamed PE tau tshwm sim ntev nyob rau hauv kev tsim kho kev lag luam thiab yog qhov xav tau zoo ntawm cov neeg siv , coob tus tsim khoom pib tsim PE. Txhawm rau kom ua tus txheej txheem tso tawm cov ntaub ntawv, tau siv thev naus laus zis ntau lawm, uas txhua lub tuam txhab thiab tuam txhab yuav tsum ua raws.

Ua ntej tshaj plaws, nws yuav tsum tau sau tseg tias thev naus laus zis ntawm kev tsim ua npuas dej polyethylene muaj ntau theem . Tib lub sijhawm, nyob rau hauv lub hauv paus ntawm qee tus ntawm lawv nws yog qhov tsim nyog siv roj, thaum lwm tus ua tsis tau nws.

Cov txheej txheem tsim khoom dav dav suav nrog cov hauv qab no:

• extruder;
• compressor rau cov pa roj;
• txias kab;
• ntim khoom

Nws yuav tsum nco ntsoov tias hom khoom siv feem ntau nyob ntawm seb yam khoom lag luam twg cov khw xav tau kom tau txais txiaj ntsig. Yog li, piv txwv li, ua lub hnab, kaw cov yeeb nkab thiab ntau lwm yam khoom siv thiab cov txheej txheem tuaj yeem siv tau. Tsis tas li, ntau lub tuam txhab tsim khoom siv xws li ya txiab, xuas nrig ntaus, tshuab moulding, thiab lwm yam.

Rau kev tsim cov khoom ncaj qha, tshwj xeeb tsim cov granules ntawm LDPE, HDPE tau siv (ntau yam raws li lawv kuj tuaj yeem siv tau) . Hauv qee kis, thawj cov ntaub ntawv raw tuaj yeem ua ke nrog cov npe hu ua regranulates. Nyob rau tib lub sijhawm, nws yuav tsum nco ntsoov tias ua npuas dej polyethylene kuj tseem tuaj yeem tsim los ntawm cov khoom siv rov ua dua tshiab. Ntxiv mus, nws yuav tsum ua tau raws qee qhov yuav tsum tau ua, uas yog, nws yuav tsum tsis pub dawb ntawm ib qho tsis huv, thiab cov khoom siv raw nws tus kheej yuav tsum muaj qhov hnyav nruab nrab cov qauv thiab ua xim zoo ib yam.

Ntau yam

Foamed polyethylene yog cov khoom siv uas tau muag hauv yob. Nyob rau tib lub sijhawm, hauv tus txheej txheem kom tau txais nws, ib tus yuav tsum tau ceev faj ntau li ntau tau, txij li muaj ntau ntau yam ntawm PE, uas sib txawv hauv lawv cov khoom tsim nyog, thiab tseem tau siv los ua ntau yam haujlwm.

Unstitched

Foamed unlinklinked polyethylene yog tsim los siv thev naus laus zis ntawm qhov hu ua "lub cev ua npuas". Txoj kev tsim khoom no tso cai rau koj khaws cov qauv qub ntawm cov khoom . Raws li rau cov yam ntxwv muaj zog ntawm hom PE no, lawv muaj tsawg, uas yuav tsum raug coj mus rau hauv tus txheej txheem ntawm kev yuav khoom thiab siv cov khoom siv. Feem ntau, nws ntseeg tias cov khoom siv tsis tau txuas nrog yog qhov cuam tshuam rau siv hauv qhov xwm txheej uas nws yuav tsis raug rau kev nyuaj siab ntawm lub tshuab.

Xaws

Hais txog kev sib txuas PE ua npuas ncauj, muaj ob hom khoom siv zoo li no: tshuaj lom neeg thiab lub cev sib txuas ua ke. Cia peb xav txog cov yam ntxwv ntawm cov hom no hauv kev nthuav dav ntxiv.

Kev tsim cov khoom siv tshuaj sib txuas ua ke tau ua tiav ib qib zuj zus . Ua ntej tshaj plaws, cov txheej txheem ntawm kev sib xyaw cov khoom siv pub mis tshwj xeeb ua npuas ncauj thiab cov khoom sib txuas tau ua tiav. Tom qab ntawd, thawj qhov haujlwm ua haujlwm tau tsim. Cov kauj ruam tom ntej yog maj mam ua kom sov ua kom sov hauv qhov cub. Nws yuav tsum tau sau tseg tias txheej txheem kev kho qhov kub ntawm qhov sib xyaw ua rau pom qhov tshwj xeeb hla kev sib txuas ntawm cov xov polymer (cov txheej txheem no hu ua "xaws", los ntawm lub npe ntawm cov khoom siv los ntawm). Tom qab qhov no, gassing tshwm sim. Raws li rau cov cuab yeej ncaj qha ntawm cov khoom siv, uas tau txais los ntawm kev siv cov txheej txheem no, nws yuav tsum tau sau tseg xws li cov yam ntxwv zoo li cov qauv zoo nkauj, cov nplaim matte, lub zog siab thiab ruaj khov, elasticity, thiab lwm yam.

Tsis zoo li cov khoom tau piav qhia saum toj no, tsis muaj tshuaj ntxiv tshwj xeeb tau siv los tsim cov khoom kawg, uas yog tsim los ntawm kev siv lub cev sib txuas … Ib qho ntxiv, tsis muaj cov txheej txheem kho cua sov hauv lub voj voog tsim khoom. Hloov chaw, cov khoom sib xyaw npaj tau ua tiav los ntawm cov kwj ntawm cov hluav taws xob, uas pab tswj cov txheej txheem sib txuas.

Nws kuj tseem ceeb kom nco ntsoov qhov tseeb tias, siv txoj hauv kev no, cov chaw tsim khoom muaj lub peev xwm los tswj cov yam ntxwv ntawm cov khoom thiab qhov loj ntawm nws cov cell.

Cov tuam txhab loj

Vim qhov tseeb tias ua npuas dej polyethylene yog qhov xav tau ntawm cov neeg siv, ntau lub tuam txhab koom nrog nws cov khoom tsim tawm, tso tawm thiab muag. Xav txog ntau qhov khoom lag luam nrov. Ua ntej tshaj plaws, cov no suav nrog:

• PENOTERM - cov ntaub ntawv ntawm hom khoom no sib raug rau txhua qhov kev tshawb fawb thiab thev naus laus zis tshiab tshaj plaws;
• " Polyfas" cov - lub tuam txhab no yog qhov txawv los ntawm nws cov khoom sib txawv;
• Siberia-Upak cheeb tsam - lub tuam txhab tau muaj nyob ntawm kev ua lag luam rau ntau tshaj 10 xyoo, lub sijhawm no nws tau tswj kom yeej txoj kev hlub thiab kev ntseeg siab ntawm cov neeg siv coob.

Hauv txheej txheem xaiv cov khoom siv, nws yog ib qho tseem ceeb heev uas yuav tsum tau them sai sai rau cov chaw tsim khoom. Tsuas yog koj xaiv lub tuam txhab ntseeg siab, koj tuaj yeem suav rau kev yuav khoom xws li ua tau raws li txhua txoj cai thoob ntiaj teb thiab cov qauv.

Cov ntawv thov

Raws li tau hais los saum no, polyethylene ua npuas ncauj yog cov khoom nrov thiab xav tau. Ua ntej tshaj plaws, qhov kev faib dav yog vim qhov tseeb tias PE tuaj yeem siv tau rau ntau thaj chaw ntawm tib neeg lub neej.

PE yog ib txwm siv los ua cov khoom siv rwb thaiv tsev . Tib lub sijhawm, nws tuaj yeem tiv thaiv tus neeg siv los ntawm cua sov, suab lossis dej. Yog li, peb tuaj yeem txiav txim siab tias ua npuas dej polyethylene tau nquag siv hauv kev tsim kho kev lag luam hauv cov txheej txheem ntawm kev txhim kho ntau hom kev tsim qauv.

Ntxiv nrog rau kev tsim kho kev lag luam, cov cuab yeej insulating ntawm cov khoom siv tau nquag siv nyob rau hauv lub moj khaum ntawm tsheb thiab cuab yeej siv hluav taws xob. Piv txwv li, PE yog siv los tsim cov khoom lag luam xws li cov ntaub pua plag thiab underlays rau cov tshuab.

Foamed polyethylene feem ntau siv los kaw qhov rooj, qhov rais thiab lwm yam ntsiab lus (piv txwv li, cov ces kaum lossis cov duab tau tsim los ntawm nws).

Nws tseem yog ib qho tseem ceeb kom nco ntsoov tias PE muaj txhua qhov tsim nyog thiab ua tau raws li qhov yuav tsum tau ntim khoom. Raws li, polyethylene yog siv rau ntim thiab thauj khoom ntawm ntau yam khoom siv.

Lwm qhov chaw siv yog tsim khoom siv ntau yam khoom siv kis las.

Yog li, peb tuaj yeem xaus qhov ntawd Polyethylene ua npuas ncauj yog cov khoom siv nrov uas muaj ntau yam ntxwv tshwj xeeb thiab siv rau ntau yam kev siv.