HDPE Thaum tshav kub kub rwb thaiv tsev yeeb nkab Extrusion kab

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PE rwb thaiv tsev yeeb nkab tseem hu ua PE txheej tiv thaiv yeeb nkab, tsho yeeb nkab, lub tes tsho yeeb nkab. Qhov ncaj qha faus polyurethane rwb thaiv tsev yeeb nkab yog tsim los ntawm HDPE rwb thaiv tsev yeeb nkab raws li txheej txheej tiv thaiv, nruab nrab ntim polyurethane rigid ua npuas ncauj yog siv los ua cov txheej txheem rwb thaiv tsev, thiab txheej sab hauv yog cov yeeb nkab steel. Polyure-thane ncaj qha faus rwb thaiv tsev yeeb nkab muaj cov khoom siv zoo thiab thermal rwb thaiv tsev ua haujlwm. Nyob rau hauv ib txwm muaj xwm txheej, nws tuaj yeem tiv taus qhov kub thiab txias ntawm 120-180 ° C, thiab tsim nyog rau ntau yam dej txias thiab dej kub siab thiab qis kub rwb thaiv tsev cov phiaj xwm.


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HDPE Thaum tshav kub kub rwb thaiv tsev yeeb nkab Extrusion kab

Kev ua tau zoo thiab nta

Cov kab hluav taws xob rwb thaiv tsev yog tsim los nrog tshwj xeeb PE rwb thaiv tsev yeeb nkab pwm, lub siab extrusion yog ruaj khov, thiab lub thickness ntawm cov yeeb nkab nyias-walled yog uniform. Lub extrusion ceev ceev, cov zis ntawm lub tshuab cua tshuab yog zoo heev, lub nto yog brighter, thiab lub lag luam automation yog siab.

HDPE yeeb nkab yog ib qho yooj yim yas yeeb nkab ua los ntawm cov thermoplastic high-density polyethylene dav siv rau cov dej tsis kub thiab roj hloov. Nyob rau lub sijhawm tsis ntev los no, cov kav dej HDPE tau txais lawv cov kev siv dav rau kev nqa cov dej haus, cov khoom siv phom sij, ntau yam roj av, slurry, dej tua hluav taws, dej nag, thiab lwm yam. Cov kav dej polyethylene muaj keeb kwm kev pabcuam ntev thiab muaj txiaj ntsig zoo rau roj, roj, mining, dej, thiab lwm yam lag luam. Vim nws qhov hnyav qis thiab siab corrosion kuj, HDPE yeeb nkab kev lag luam loj hlob zoo heev. Xyoo 1953, Karl Ziegler thiab Erhard Holzkamp tau tshawb pom cov polyethene siab ntom ntom (HDPE). Cov kav dej HDPE tuaj yeem ua haujlwm txaus siab nyob rau hauv qhov kub ntawm -2200 F txog +1800 F. Txawm li cas los xij, kev siv cov kav dej HDPE tsis pom zoo thaum cov kua dej kub siab tshaj 1220 F (500 C).

HDPE kav yog tsim los ntawm polymerization ntawm ethylene, ib tug by-product ntawm roj. Ntau yam additives (stabilizers, fillers, plasticizers, softeners, lubricants, colorants, flame retardants, blowing agents, crosslinking agents, ultraviolet degradable additives, etc.) yog ntxiv los tsim cov yeeb nkab HDPE kawg thiab cov khoom siv. HDPE yeeb nkab ntev yog tsim los ntawm cua sov HDPE resin. Nws yog tom qab ntawd extruded los ntawm kev tuag, uas txiav txim siab txoj kab uas hla ntawm cov kav dej. Cov yeeb nkab phab ntsa tuab yog txiav txim siab los ntawm kev sib xyaw ntawm qhov loj me, qhov ceev ntawm cov ntsia hlau, thiab qhov ceev ntawm lub tsheb laij teb tawm. Feem ntau, 3-5% carbon dub yog ntxiv rau HDPE kom nws UV resistant, uas hloov HDPE kav rau hauv cov xim dub. Lwm cov xim txawv muaj tab sis feem ntau tsis siv ntau zaus. Xim lossis kab txaij HDPE yeeb nkab feem ntau yog 90-95% cov khoom siv dub, qhov twg cov kab txaij xim yog muab rau ntawm 5% ntawm sab nraud.


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