Qhov txawv ntawm PE80 yeeb nkab thiab PE100 yeeb nkab

PE tubtam sim no nyob rau hauv kev ua lag luam, thiab twb yog ib yam khoom uas paub heev, tshwj xeeb tshaj yog nyob rau hauv kev lag luam.Thaum hais txog PE kav, lawv tam sim ntawd xav txog hnav tsis kam, siab tsis kam, corrosion kuj thiab lub neej ntev kev pab cuam.Muaj ntau cov kav dej PE.Hom, cov ntaub ntawv raw PE kuj tau muab faib ua ntau hom, cov khoom tsim PE yeeb nkab kuj tau muab faib ua ntau hom, niaj hnub no cov lus qhia ntxaws ntxaws, qhov txawv ntawm cov qauv ntawm PE80 yeeb nkab thiab PE100 yeeb nkab yog dab tsi?
Cov khoom siv PE yog polyethylene, uas yog ntau yam khoom siv yas.Nws yog cov khoom siv polymer synthesized los ntawm polyethylene.
Yeej muab faib ua ob pawg: low density polyethylene LDPE (qis zog);High ceev polyethylene HDPE.PE cov ntaub ntawv tau muab faib ua tsib qib raws li tus qauv kev sib koom ua ke thoob ntiaj teb: qib PE32, qib PE40, qib PE63, qib PE80 thiab qib PE100.
Kev tsim cov PE kav dej rau cov kav dej yog high-density polyethylene (HDPE), thiab nws cov qib yog PE80 thiab PE100 (raws li cov ntawv luv ntawm Yam Tsawg Yuav Tsum Muaj Zog, MRS).MRS ntawm PE80 nce mus txog 8MPa;MRS ntawm PE100 nce mus txog 10MPa.MRS hais txog lub zog tensile lub zog ntawm cov yeeb nkab (xws li tus nqi kuaj raws li cov qauv thoob ntiaj teb).
PE80 (8.00 ~ 9.99Mpa) yog ib tug masterbatch nrog antimony trioxide cov ntsiab lus ntawm 80% ntawm polyethylene substrate, uas yog tsuas yog siv nyob rau hauv casting thiab ua zaj duab xis nyob rau tib lub sij hawm.Nws yog granular free-flowing plua plav-dawb masterbatch uas muaj kev nyab xeeb hauv kev tsim ntau dua li cov hmoov nplej, yooj yim rau kev siv ntau npaum li cas, thiab tseem suav tias yog lub hom phiaj dav dav masterbatch, uas yog dawb-ntws hauv daim ntawv granular.
PE100 (10.00 ~ 11.19Mpa) yog tus lej ntawm cov qib tau los ntawm kev sib tw qhov tsawg kawg nkaus uas yuav tsum tau muaj zog (MRS) ntawm polyethylene raw cov ntaub ntawv.Raws li GB / T18252, lub zog hydrostatic ntawm cov khoom sib raug rau 20 ℃, 50 xyoo thiab kwv yees qhov tshwm sim ntawm 97.5% yog txiav txim siab raws li GB / T18252.σLPL, hloov MRS, thiab muab cov MRS los ntawm 10 kom tau txais cov naj npawb ntawm cov khoom.
Yog tias cov kav dej thiab fittings tsim los ntawm ntau qib ntawm polyethylene raw cov ntaub ntawv yuav tsum tau txuas nrog, cov pob qij txha yuav tsum raug kuaj xyuas hydraulic.Feem ntau, PE63, PE80, PE100 sib tov nrog melt flow rate (MFR) (190 ° C / 5kg) nruab nrab ntawm 0.2g / 10min thiab 1.3g / 10min yuav tsum suav tias yog kev sib koom ua ke thiab tuaj yeem txuas rau ib leeg.Cov ntaub ntawv nyoos sab nraum qhov no yuav tsum tau sim los txiav txim.
1. Dab tsi yog PE100 polyethylene yeeb nkab?
Txoj kev loj hlob ntawm cov ntaub ntawv polyethylene yeeb nkab tau lees paub tias tau muab faib ua peb tiam, uas yog peb theem kev loj hlob:
Thawj tiam, polyethylene low-density polyethylene thiab "hom ib" high-density polyethylene, muaj kev ua haujlwm tsis zoo thiab sib npaug rau cov khoom siv polyethylene tam sim no hauv qab PE63.
Qhov thib ob tiam, uas tshwm sim nyob rau hauv 1960s, yog ib tug nruab nrab-density polyethylene yeeb nkab khoom nrog high-lub sij hawm hydrostatic zog thiab tawg tsis kam, uas tam sim no hu ua PE80 qib polyethylene yeeb nkab khoom.
Peb tiam, uas tshwm sim nyob rau hauv 1980s, yog hu ua peb tiam polyethylene yeeb nkab khoom tshwj xeeb PE100.PE100 txhais tau hais tias ntawm 20 ° C, cov yeeb nkab polyethylene tseem tuaj yeem tswj tau qhov tsawg kawg nkaus uas yuav tsum tau muaj zog MRS ntawm 10MPa tom qab 50 xyoo, thiab muaj kev tiv thaiv zoo rau kev loj hlob sai.
2. Dab tsi yog qhov zoo ntawm PE100 polyethylene yeeb nkab?
PE100 muaj tag nrho cov khoom zoo ntawm polyethylene, thiab nws cov khoom siv kho tshuab tau zoo dua qub, uas ua rau PE100 muaj ntau yam tshwj xeeb zoo thiab siv rau ntau qhov chaw.
2.1 Muaj zog ua haujlwm siab
Vim tias PE100 resin muaj qhov tsawg kawg nkaus uas yuav tsum tau muaj zog ntawm 10MPa, nws muaj zog ntau dua li lwm cov polyethylene, thiab cov roj thiab cov kua tuaj yeem thauj mus rau hauv siab;
2.2 Thinner phab ntsa
Nyob rau hauv ib txwm ua haujlwm siab, cov yeeb nkab phab ntsa ua los ntawm PE100 cov khoom tuaj yeem ua tau zoo heev.Rau cov kav dej loj loj, kev siv cov kav dej nyias nyias tuaj yeem txuag tau cov ntaub ntawv thiab nthuav dav thaj tsam ntawm cov kav dej hla ntawm cov kav dej, yog li ua kom muaj peev xwm thauj mus los ntawm cov kav dej.Yog hais tias lub peev xwm conveying yog tas mus li, qhov nce ntawm qhov hla ntu ua rau txo qis ntawm tus nqi ntws, kom qhov kev xa khoom tuaj yeem pom tau los ntawm lub tshuab fais fab me me, tab sis tus nqi tau txais kev cawmdim.
2.3 Kev nyab xeeb siab dua
Yog tias cov yeeb nkab loj lossis qhov kev khiav hauj lwm siab tau teev tseg, qhov kev nyab xeeb uas PE100 tuaj yeem ua kom ntseeg tau tias muaj kev lees paub nyob rau niaj hnub no ntau yam polyethylene piping series.
2.4 Siab hardness
PE100 cov khoom muaj qhov elastic modulus ntawm 1250MPa, uas yog siab dua 950MPa ntawm tus qauv HDPE resin, uas ua rau PE100 yeeb nkab muaj lub nplhaib nruj dua.
3. Mechanical zog ntawm PE100 cob
3.1 Lub zog ruaj khov
Lub zog ruaj khov tau txiav txim siab los ntawm kev ntsuas cov kab ntawm qhov kub sib txawv (20 ° C, 40 ° C, 60 ° C thiab 80 ° C).Ntawm 20 ℃, PE100 resin tuaj yeem tuav lub zog ntawm 10MPa tom qab 50 xyoo, (PE80 yog 8.0MPa).
3.2 Zoo kev ntxhov siab tawg tsis kam
PE100 polyethylene yeeb nkab cov khoom siv tshwj xeeb muaj qhov ua haujlwm zoo rau kev ntxhov siab tawg, ncua qhov tshwm sim ntawm kev ntxhov siab tawg (> 10000 teev), thiab nws tuaj yeem ncua sijhawm ntau tshaj 100 xyoo nyob rau hauv qhov xwm txheej ntawm 20 ℃.
3.3 Qhov tseem ceeb tiv thaiv kev tawg sai sai
Qhov yuav tsum tau muaj peev xwm tiv thaiv qhov kev loj hlob sai ntawm cov kab nrib pleb txwv tsis pub siv cov kav dej polyethylene ib txwm muaj: rau cov roj, qhov siab txwv yog 0.4MPa, thiab kev xa dej yog 1.0MPa.Vim lub peev xwm zoo tshaj plaws ntawm PE100 los tiv thaiv qhov kev loj hlob sai ntawm cov kab nrib pleb, lub siab txwv nyob rau hauv cov nkev network tau nce mus rau 1.0MPa (1.2MPa tau siv nyob rau hauv Russia thiab 1.6MPa hauv cov dej sib txuas).Hauv ib lo lus, daim ntawv thov ntawm PE100 polyethylene cov khoom siv hauv cov kav dej yuav xyuas kom meej tias qhov kev ua tau zoo ntawm pe100 cov kav dej hauv cov kav dej muaj kev nyab xeeb, kev lag luam ntau dua thiab muaj lub neej ua haujlwm ntev dua.
Tau qhov twg los:http://www.chinapipe.net/baike/knowledge/15022.html