ntchito

Polyethylene chitoliro kupanga ndondomeko ndi extrusion njira zinthu granular kuti kunja mu extruder ndi kutentha.

Kupanga mapaipi a polyethylene

Zinthuzo zimakonzedwa ndi screw (spiral rod) kuti zikankhidwe ndiyeno zimatulutsidwa kuchokera ku extruder kupita ku nkhungu.Chakudya chophikidwa mutachoka mu nkhungu, chowongolera pamtanda ndi kuthamanga kwa thanki ya vacuum ndizopangidwa moyenera.Pa exiting calibrator chubu pamwamba ndi zigawo za madzi otaya ndi utakhazikika.
Kutentha kwapamwamba kosungunuka polyethylene thanki pambuyo pochotsa nkhungu mu vacuum ndiyeno pang'onopang'ono matanki oziziritsa amachepetsedwa pogwiritsa ntchito madzi ozizira.
miyeso yeniyeni ndi kudula.
Njira zonse zopangira zimangopangidwa ndi zida zomwe zimawongolera ndikuwunika mtundu wa chinthu chomaliza ndizovomerezeka komanso dzina la kampani ndi miyezo.
Nthawi zonse amayesa kupanga chitoliro cha polyethylene
Magawo oyesa kupanga mapaipi a PE ndi awa:
Melt flow index (INSO 6980-1)
Kudziwitsa kachulukidwe (INSO 7090-1)
Kutsimikiza kwa mwaye (ISO 6964)
Kugawa kwa mwaye (ISO 18553)
Kuyesa kwamphamvu (ISO 6259-1,3)
Mayeso a Hydrostatic pressure (ISIRI 12181-1,2)
Mayeso othamanga kwambiri (ASTM D 1599)
Kubwerera ku mayeso amafuta (INSO 17614)
Kuyeza ndi zowonera chubu (INSO 2412)
Mayeso okhazikika a kutentha pamaso pa oxygen OIT (ISIRI 7186-6)

Sungunulani ma flow index (INSO 6980-1):
Pachiyeso ichi, kuchuluka kwa kusungunuka kwa zinthu kumayesedwa pa nthawi yokhazikika ndi kutentha, ku zotsatira, momwe mungagwirire zinthu mkati mwa extruder ziyenera kuganiziridwa.
Mayeso azinthu zopangira (kuti atsimikizire mtundu wa zida) komanso pazogulitsa.Mtengo wa MFI wazinthu suyenera kupitilira 20% ± zopangira ndizosiyana ndi MFI.
• Kuzindikira kachulukidwe (INSO 7090-1)
Kachulukidwe wa zinthu zopangira ndi njira zoyandama za kachulukidwe kazinthu pogwiritsa ntchito njira zolondola zamadzimadzi zomwe zimakhala ndi kachulukidwe kena kake zimatsimikiziridwa."Kuchuluka kwa chiwerengero cha mankhwala, khalidwe la kupanga.
• Kutsimikiza kwa mwaye (ISO 6964) ndi kagawidwe ka mwaye (ISO18553)
Mwaye mu zipangizo ndi chomaliza mankhwala anatsimikiza.
Gawo lololedwa la kaboni wakuda mu chitoliro cha polyethylene 2 mpaka 5.2% kulemera kwake komwe kumayenera kugawidwa mofanana mozungulira.

• Kuyesa (ISO 6259-1,3)
Pogwiritsa ntchito ma labotale apadera, mawonekedwe amawotchi a mapaipi a polyethylene, kuphatikiza mphamvu yayikulu motsutsana ndi katundu wakunja, elongation pakupuma, coefficient of elasticity ndi kupatuka pansi pa katundu wa mfundo zitatu akhoza kuyeza ndipo malinga ndi zotsatira za mayeso, titha kuwunika kagwiritsidwe ntchito ka mankhwala panthawi yogwira ntchito.
• Mayeso a Hydrostatic pressure (ISIRI 12181-1,2)
Pofuna kuyesa mphamvu ya mankhwala motsutsana ndi hydrostatic pressure test ikuchitika., kuikidwa pansi pa kupanikizika kosalekeza kwa mkati.
Chilema chilichonse pazitsanzo (kung'amba, kuphulika, kutupa kwapafupi, kutayikira ndi ming'alu yabwino) kutanthauza kuti mankhwala alephera.
• Kuthamanga kwamphamvu (ASTM D 1599)
Mu chiyeso ichi, chitsanzo chubu akuyandama mu dziwe ndi zonse kutentha 23 ° C ndiyeno kuikidwa pansi kuchulukirachulukira mkati, kuti pa nthawi 60 70 masekondi, pathupi ndiyeno chifukwa akulimbana.

Tube popanda kusweka kapena kuphulika ndi kagawo kotalika ndi kotetezeka kuti munthu amwe.
• Mayeso otenthetsera kumbuyo (ISO 2505)
Pafupifupi kutalika kwa zitsanzo za 20 cm kukhala imodzi, ndi kutentha kwa mpweya (2 ± 110) ° C kwa ola limodzi kapena atatu (malinga ndi makulidwe a khoma la chitoliro), ndipo pambuyo pozizira ndi kutalika kwa chubu, kudzakhala kochepa kuposa boma koyamba pa kutentha yachibadwa, zomwe zingachititse kusintha khalidwe mipope anaika mu chitoliro kuzungulira, kotero pamwamba mayeso malire kotenga nthawi kusintha (mpaka 3%) mu labotale.

• chubu choyezera ndi maso (INSO 2412)
Mapaipi a polyethylene ayenera kukhala opanda roughness (mkati ndi pamwamba) ndi pores zakuya.Madontho pang'ono ngati sachepetsa makulidwe ake kukhala ochepera malire, ndi osasamala.
Ndendende dzina la chitoliro khoma makulidwe ntchito akupanga makulidwe n'zotsimikizira calibrated calipers pa kudula chigawo pa lipenga.
Kunja kwa chubu pogwiritsa ntchito magulu achitsulo (Sykrvmtr) ndi kufupi ndi nthambi kunayesedwa ndipo mtengo wake umanenedwa.