Imibhobho ye-PEngoku zikwimarike, kwaye sele ziyimveliso eqhelekileyo, ngakumbi ezo zikushishino.Xa iipayipi ze-PE zikhankanyiwe, zicinga ngokukhawuleza ukuxhatshazwa kokugqoka, ukunyanzeliswa kwengcinezelo, ukuxhathisa ukubola kunye nobomi benkonzo ende.Kukho imibhobho ye-PE emininzi.Iindidi, izinto ezikrwada ze-PE nazo zohlulwe zibe ziindidi ezininzi, iimveliso zombhobho we-PE eziveliswayo zikwahlulwe zibe ziindidi ezininzi, ingcaciso ebanzi yanamhlanje, yintoni umahluko phakathi kwemigangatho ye-PE80 yombhobho kunye ne-PE100 umbhobho?
Izinto ze-PE yi-polyethylene, ezahlukahlukeneyo zeplastiki.Yimpahla yepolymer eyenziwe kwi-polyethylene.
Ukwahlulwe ngokwesiseko kwiindidi ezimbini: i-polyethylene ephantsi ye-LDPE (amandla aphantsi);high density polyethylene HDPE.Izixhobo ze-PE zohlulwe zibe ngamabakala amahlanu ngokomgangatho omanyeneyo wamazwe ngamazwe: ibakala le-PE32, ibakala le-PE40, ibakala le-PE63, ibakala le-PE80 nebakala le-PE100.
Ukuveliswa kwemibhobho ye-PE kwimibhobho yokubonelela ngamanzi i-polyethylene ephezulu (i-HDPE), kwaye amabakala ayo yi-PE80 kunye ne-PE100 (ngokwesifinyezo se-Minimum Minimum Required Strength, MRS).I-MRS ye-PE80 ifikelela kwi-8MPa;i-MRS ye-PE100 ifikelela kwi-10MPa.U-MRS ubhekisa kumandla oxinzelelo lwehupula yombhobho (ixabiso elibaliweyo livavanyiwe ngokwemigangatho yamazwe ngamazwe).
I-PE80 (8.00～9.99Mpa) yi-masterbatch enomxholo we-antimony trioxide we-80% kwi-polyethylene substrate, enokuthi isetyenziswe kakhulu ekwenziweni kunye nokwenza ifilimu ngexesha elinye.Yi-masterbatch ye-granular equkuqelayo ekhululekileyo engenathuli ekhuselekileyo kwimveliso kunomgubo wesintu, kulula ukuyiqonda idosi, kwaye ikwajongwa njenge-masterbatch yenjongo jikelele, equkuqela simahla kwimo yegranular.
I-PE100 (10.00～11.19Mpa) linani lamabakala afunyenwe ngokusondeza awona mandla afunekayo (MRS) enziwe ngepolyethylene ekrwada.Ngokutsho kwe-GB/T18252, amandla e-hydrostatic yezinto ezihambelana ne-20℃, iminyaka eyi-50 kunye namathuba aqikelelweyo e-97.5% anqunywe ngokwe-GB/T18252.σLPL, guqula i-MRS, kwaye uphindaphinde i-MRS ngo-10 ukufumana inani lohlelo lwemathiriyeli.
Ukuba imibhobho kunye nezixhobo eziveliswe kumanqanaba ahlukeneyo ezinto eziluhlaza ze-polyethylene ziza kudibaniswa, amajoyina aya kufakwa kuvavanyo lwe-hydraulic.Ngokuqhelekileyo, i-PE63, i-PE80, i-PE100 imixube enezinga lokuncibilika kwe-melt (MFR) (190 ° C / 5kg) phakathi kwe-0.2g / 10min kunye ne-1.3g / 10min kufuneka ithathwe njengento edibeneyo kwaye inokudibaniswa enye kwenye.Iimathiriyeli ekrwada ezingaphandle kolu luhlu kufuneka zivavanywe ukumisela.
1. Yintoni umbhobho we-PE100 we-polyethylene?
Ukuphuhliswa kwezinto zombhobho we-polyethylene kubonwa njengokwahlulwe kwizizukulwana ezithathu, ezizezi zigaba ezintathu zophuhliso:
Isizukulwana sokuqala, i-polyethylene ephantsi kunye "nohlobo olulodwa" oluphezulu lwe-polyethylene, lunokusebenza kakubi kwaye lulingana nezixhobo zepayipi ze-polyethylene zangoku ezingaphantsi kwe-PE63.
Isizukulwana sesibini, esabonakala ngeminyaka yee-1960s, sisixhobo sombhobho we-polyethylene woxinaniso oluphakathi kunye nokuqina kwexesha elide le-hydrostatic kunye nokumelana nokuqhekeka, ngoku ebizwa ngokuba yi-PE80 grade polyethylene material.
Isizukulwana sesithathu, esabonakala kwiminyaka yee-1980, sibizwa ngokuba yisizukulwana sesithathu se-polyethylene pipe yezinto ezikhethekileyo ze-PE100.I-PE100 ithetha ukuba ku-20°C, umbhobho we-polyethylene usengawagcina amandla afunekayo e-MRS ye-10MPa emva kweminyaka engama-50, kwaye unokumelana okubalaseleyo ekukhuleni okukhawulezileyo kokuqhekeka.
2. Ziziphi iingenelo eziphambili ze-PE100 polyethylene pipe?
I-PE100 inazo zonke iimpawu ezibalaseleyo ze-polyethylene, kwaye iimpawu zayo zomatshini ziphuculwe kakhulu, okwenza i-PE100 ibe neenzuzo ezininzi ezikhethekileyo kwaye isetyenziswe kwiindawo ezininzi.
2.1 Ukuxhatshazwa koxinzelelo olunamandla
Ngenxa yokuba i-PE100 resin inamandla amancinci afunekayo e-10MPa, yomelele ngakumbi kunezinye i-polyethylenes, kwaye igesi kunye nolwelo zinokuthuthwa phantsi koxinzelelo oluphezulu;
2.2 Udonga oluncinci
Ngaphantsi koxinzelelo oluqhelekileyo lokusebenza, udonga lombhobho olwenziwe ngezinto ze-PE100 lunokuncitshiswa kakhulu.Kwiimibhobho zamanzi ezinobubanzi obukhulu, ukusetyenziswa kweebhobho ezinobumba obuncinci kunokugcina izinto eziphathekayo kunye nokwandisa indawo yendawo enqamlezileyo yemibhobho, ngaloo ndlela ukwandisa umthamo wokuthutha wemibhobho.Ukuba amandla okuhambisa ahlala ehlala, ukunyuka kwecandelo elinqamlezayo kukhokelela ekunciphiseni izinga lokuhamba, ukwenzela ukuba ukuhanjiswa kukwazi ukufezekiswa ngepompo encinci yamandla, kodwa iindleko zigcinwa.
2.3 Ukhuseleko oluphezulu
Ukuba umbhobho ubungakanani okanye uxinzelelo lokusebenza lucacisiwe, into yokhuseleko enokuthi i-PE100 iqinisekise iqinisekisiwe kwimibhobho ye-polyethylene eyahlukeneyo yanamhlanje.
2.4 Ukuqina okungaphezulu
I-PE100 imathiriyeli ine-elastic modulus ye-1250MPa, ephezulu kune-950MPa ye-resin ye-HDPE esemgangathweni, eyenza umbhobho we-PE100 ube nokuqina okuphezulu kweringi.
3. Iimpawu zeMechanical ze-PE100 resin
3.1 Amandla aZinzileyo
Amandla okunyamezela anqunywe ngoxinzelelo lokuvavanya imigca kumaqondo okushisa ahlukeneyo (20 ° C, 40 ° C, 60 ° C kunye ne-80 ° C).Kwi-20℃, i-PE100 resin inokugcina amandla e-10MPa emva kweminyaka engama-50, (PE80 yi-8.0MPa).
3.2 Ukumelana kakuhle noxinzelelo lwe-crack
I-PE100 i-polyethylene pipe impahla ekhethekileyo inokumelana okulungileyo nokuqhekeka koxinzelelo, ukulibazisa ukwenzeka kokuqhekeka koxinzelelo (> iiyure eziyi-10000), kwaye inokulibaziseka iminyaka engaphezu kwe-100 phantsi kwemeko ye-20 ℃.
3.3 Ukuxhathisa okubonakalayo ekukhuleni kwe-crack ngokukhawuleza
Imfuneko yokukwazi ukuchasana nokukhula ngokukhawuleza kokuqhekeka imida yokusetyenziswa kwemibhobho ye-polyethylene yendabuko: igesi, umda woxinzelelo ngu-0.4MPa, kunye nokuhanjiswa kwamanzi, yi-1.0MPa.Ngenxa yesakhono esimangalisayo se-PE100 ukuxhathisa ukukhula ngokukhawuleza kweentanda, umda woxinzelelo kuthungelwano lwegesi yendalo lonyuswa kwi-1.0MPa (1.2MPa isetyenziswe eRashiya kunye ne-1.6MPa kuthungelwano lokuhambisa amanzi).Ngelizwi, ukusetyenziswa kwezinto ze-PE100 ze-polyethylene kwimibhobho kuya kuqinisekisa ukuba iiparitha zokusebenza ze-pe100 zemibhobho yokuhambisa amanzi kwinethiwekhi yombhobho zikhuselekile, zinoqoqosho kwaye zinexesha elide lenkonzo.
Inkcazo: http://www.chinapipe.net/baike/knowledge/15022.html
Ixesha lokuposa: Nov-04-2022
