Kev txhais ntawm HDPE
HDPE yog cov ntawv xov xwm feem ntau siv los xa mus rau qhov siab tuab polyethylene. Peb tseem hais lus ntawm PE, LDPE lossis PE-HD daim hlau. Polyethylene yog cov khoom siv thermoplastic uas yog ib feem ntawm tsev neeg ntawm plastics.
Muaj ntau hom sib txawv polyethylenes. Cov kev sib txawv no tau piav qhia los ntawm kev tsim cov txheej txheem uas yuav txawv. Peb tab tom tham txog Polyethylene:
• Tsawg ntom ntom (LDPE)
• Muaj qhov ntom ntom (HDPE)
• Nta Ntsig (PEMD).
Tsis tas li ntawd, tseem muaj lwm hom polyethylene: chlorinated (PE-C), nrog ib tug heev molecular hnyav.
Tag nrho cov tsiaj ntawv luv no thiab hom ntaub ntawv raug coj ua raws li AEGIS ntawm tus qauv NF en ISO 1043-1
HDPE yog qhov tshwm sim los ntawm cov txheej txheem siab ntom ntom: Kev Kub Nrom Kub Polyethylene. Nrog nws, peb tuaj yeem ua rau cov menyuam yaus cov khoom ua si, cov hnab yas, thiab cov kav dej siv los thauj dej!
HDPE yas yog tsim los ntawm cov roj av synthesis. Rau nws cov chaw tsim khoom, HDPE koom nrog cov kauj ruam sib txawv:
• Distillation
• Chav nrib pleb
• Polymerization
• granulation
Tom qab kev hloov pauv no, cov khoom yog mote dawb, translucent. Nws yog qhov yooj yim heev rau cov duab lossis xim.
HDPE Siv Cov Ntaub Ntawv Hauv Kev Lag Luam
Ua tsaug rau nws cov kev ua tau zoo thiab qhov zoo, HDPE siv nyob rau ntau thaj chaw ntawm kev lag luam.
Nws yog pom tias nyob rau txhua qhov chaw puag ncig peb hauv peb lub neej txhua hnub. Nov yog qee yam ua piv txwv:
Kev tsim cov tshuaj yas thiab ntim yas ntim
HDPE yog paub zoo nyob rau hauv kev lag luam khoom noj, tshwj xeeb tshaj yog rau kev tsim cov tshuaj yas.
Nws yog ib lub thawv zoo heev rau cov zaub mov lossis dej haus lossis rau kev tsim lub raj mis raj mis. Tsis muaj kev pheej hmoo ntawm kev tawg ua ke raws li muaj peev xwm muaj tau iav.
Tsis tas li ntawd, HDPE yas ntim muaj cov txiaj ntsig zoo ntawm kev rov ua dua tshiab.
Tshaj kev lag luam khoom noj, HDPE pom nyob hauv lwm qhov chaw ntawm kev lag luam feem ntau:
• ua khoom ua si,
• Cov kev tiv thaiv cov ntaub ntawv Yas rau cov phau ntawv sau,
• Cia Ntim Thawv
• Hauv kev tsim cov Canoes-Kayaks
• Tsim cov beacon buoys
• Thiab ntau lwm tus!
HDPE hauv kev lag luam thiab kev lag luam kws tshuaj
Cov tshuaj thiab cov khoom lag luam siv HDPE vim tias nws muaj cov khoom tiv thaiv kev tiv thaiv. Nws tau hais tias yuav tsum yog tshuaj inert.
Yog li, nws yuav ua ib lub thawv:
• Rau zawv plaub hau
• Cov khoom hauv tsev yuav siv nrog kev saib xyuas
• Ntxuav
• Cov Roj Cav
Nws tseem siv los tsim cov tshuaj fwj.
Ib qho ntxiv, peb pom cov hwj uas muaj peev xwm tsim hauv polypropylene tseem muaj zog ntau dua hauv lawv cov tshuaj tiv thaiv thaum lawv xim lossis xim pig.
HDPE rau kev tsim kho kev tsim kho thiab kev coj ua ntawm kua
Thaum kawg, ib qho ntawm lwm thaj chaw uas tau siv HDPE yog kev teb thiab cov kev ua haujlwm kev ua haujlwm ntau feem ntau.
Kev tsim kho lossis cov kws tshaj lij siv nws los tsim thiab nruab cov kav dej uas yuav siv los ua cov dej (dej, roj).
Txij li thaum xyoo 1950, cov yeeb nkab HDPE tau hloov cov piping txhuas. Cov kav dej taug txhuas tau maj mam txwv vim nws cov tshuaj lom rau cov dej haus.
High-ntom polyethylene (HDPE) yeeb nkab, ntawm qhov kev faib cov kav dej haus rau cov kav dej haus rau cov dej haus no.
HDPE muaj qhov kom zoo dua ntawm kev tiv thaiv cov dej ntau dua hauv cov yeeb nkab, tsis zoo li ldpe (cov ntsiab lus tsis tshua muaj polyethylene). Txhawm rau faib dej kub ntau dua 60 °, peb yuav xum tig mus rau cov kav dej pipes (polyethylene tiv thaiv kub).
HDPE kuj ua rau nws muaj peev xwm thauj roj los ntawm cov raj, los tsim cov ductions lossis qhov chaw nyob hauv lub tsev.
Qhov zoo thiab qhov tsis zoo ntawm kev siv HDPE ntawm cov chaw muaj kev lag luam
Vim li cas hdpe thiaj li yooj yim siv rau cov chaw lag luam? Thiab ntawm qhov tsis sib xws, dab tsi yuav yog cov ntsiab lus tsis zoo?
Qhov zoo ntawm HDPE raws li cov khoom siv
HDPE yog cov khoom siv uas muaj ob peb qhov txiaj ntsig zoo uas ua rau nws siv hauv kev lag luam lossis kev coj ua kua hauv piping.
HDPE yog cov khoom siv pheej yig rau kev ua yeeb yam zoo. Nws yog tshwj xeeb heev heev (tsis muaj peev xwm) thaum seem lub teeb.
Nws tuaj yeem tiv taus ntau qib kub nyob ntawm nws cov txheej txheem tsim khoom (tsawg thiab siab kub: los ntawm feem ntau ntawm cov kuab tshuaj solvent uas nws yuav muaj yam tsis muaj kev puas ntsoog. Sag lossis hloov pauv.
Cia nthuav qhia qee qhov ntawm nws cov txiaj ntsig:
HDPE: Ib qho yooj yim modular
Ua tsaug rau txoj kev tsim khoom uas tsim HDPE, HDPE tiv thaiv kom muaj kub heev.
Thaum lub sij hawm tsim kev tsim khoom, thaum nws mus txog qhov taw tes melting, cov khoom tuaj yeem nqa ntawm cov khoom lag luam tshwj xeeb thiab muab cov kav dej rau cov khoom siv hauv tsev lossis cov kav dej rau hauv dej siab.
Qhov no yog vim li cas pum pipes tiv taus corrosion thiab ruaj khov tiv thaiv ntau yam tshuaj lom neeg.
HDPE yog cov tiv taus heev thiab dej tsis tau
Lwm qhov zoo dua thiab tsis tsawg, HDPE yog tiv taus!
• HDPE tsis kam corrosion: Yog li cov kav dej uas thauj cov kua hlau ua kom tsis txhob muaj "corrosion". Yuav tsis muaj kev hloov pauv ntawm cov yeeb nkab tuab lossis zoo ntawm fittings dhau sijhawm.
• Tsis kam rau cov av khov: nyob rau hauv tib txoj kev, yog tias cov av yog cov kua qaub thiab cov raj xa dej faus, nws cov duab tsis zoo yuav raug hloov kho
• HDPE tseem tsis tshua muaj zog rau kev poob siab sab nraud uas yuav tshwm sim: lub zog kis thaum lub sijhawm poob siab yuav ua rau muaj kev poob siab dua li qhov tsis zoo. Ib yam li ntawd, kev pheej hmoo ntawm cov rauj rauj yog txiav txim siab nrog HDPE
HDPE kav dej yog qhov tsis zoo: txawm tias yuav dej lossis cua ib yam. Nws yog NF EN 1610 tus qauv uas tso cai rau piv txwv los sim cov nruj ntawm lub raj.
Thaum kawg, thaum xim dub, HDPE tuaj yeem tiv taus UV
HDPE yog lub teeb tab sis muaj zog
Rau cov chaw lag luam lag luam, qhov pom kev ntawm HDPE yog qhov tsis muaj txiaj ntsig: Cov kav dej HDPE yog qhov yooj yim thauj, txav lossis khaws cia lossis khaws cia.
Piv txwv li, polypropylene, ib meter ntawm cov yeeb nkab nrog txoj kab uas hla ntawm tsawg dua 300 qhov hnyav:
• 5 kg hauv HDPE
• 66 kg hauv cam khwb cia hlau
• 150 kg qhob
Qhov tseeb, rau kev tuav hauv dav dav, lub installation ntawm hdpe kav yog qhov yooj yim thiab yuav tsum tau siv cov khoom sib dua.
Tus pas dej HDPE tseem tiv taus, vim tias nws kav ntev dua txij li nws lub neej yuav ntev heev (tshwj xeeb yog HDPE 100).
Qhov no lifigan ntawm cov yeeb nkab yuav nyob ntawm ntau yam: qhov loj me, sab hauv siab lossis ntsuas kub hauv cov kua hauv. Peb tab tom tham txog 50 txog 100 xyoo ntawm kev ua neej ntev.
Qhov tsis zoo ntawm kev siv siab ntom ntom polyethylene ntawm kev tsim kho chaw
Ntawm qhov tsis sib xws, qhov tsis zoo ntawm kev siv HDPE cov yeeb nkab tseem muaj nyob.
Peb muaj peev xwm hais txog piv txwv:
• Cov kev teeb tsa lub tshuab tsim kho yuav tsum yog qhov ceev faj: kev ntxhib yuav ua rau neeg tuag taus
• Nws tsis muaj peev xwm siv gluing los yog ntsia hlau txuas rau ob qho kev sib tw HDPE
• Muaj kev pheej hmoo ntawm cov kav dej thaum tuaj koom ob lub kav dej
• Hdpe absombbs suab ntau dua li lwm cov ntaub ntawv (xws li cam khwb cia hlau), uas yog qhov nyuaj dua los xyuas
• Thiab yog li saib xyuas cov xau. Cov txheej txheem kim kim heev tau siv los saib lub network (Hydrophone txoj kev)
• Kev nthuav dav hluav taws xob yog qhov tseem ceeb nrog HDPE: Ib cov yeeb nkab yuav deform nyob ntawm seb qhov kub
• Nws yog ib qho tseem ceeb kom hwm qhov kev ua haujlwm ntau tshaj plaws raws li qhov zoo ntawm HDPE
Sijhawm Post: Sep-11-2022