PE dej xa kav thiab PPR kav dej siv tau los txhim kho tsev, tiam sis feem ntau, PPR kav dej siv ntau zaus ntau dua PE dej. Yog li cas yog vim li cas? Yog tsis muaj kev sib ntaus yam tsis muaj kev sib piv, hauv qab no yog rau txhua tus los sib piv cov ntaub ntawv!
1.Ua zoo modulus
PPR dej yeeb nkab: kauv phom 850MPa, zoo zog thiab muaj zog.
PE dej yeeb nkim: kwj deg elastic modulus 550MPa, zoo yooj, tsis txaus rigidity, siv nyob rau hauv tsev tsim dej, yooj yim khoov, yooj yim rau deform.
2. Thermal conductivity
PPR dej xa: thermal conductivity ntawm 0.24, thermal conductivity tsawg, qis dissipation thiab zoo thermal rwb thaiv tsev zoo.
PE dej yeeb nkev: thermal conductivity 0.42, hluav taws xob kub ceev, tsim rau cov cua kub hauv pem teb, tsis haum rau cov kav dej kub, txwv tsis pub lub cua sov poob loj thiab kub kub yog siab.
3. Kev ntsuas kub
PPR dej yeeb nkab: Qhov siab tshaj plaws ua haujlwm sov yog 75 ° C, qhov qis tshaj yog -10 ° C, kev siv cov dej PPR ntev mus ntev kuj zoo thiab txhim khu.
PE dej yeeb nkev: Qhov siab tshaj plaws ua haujlwm kub yog 70 ° C, qis tshaj yog -30 ° C. Nyob rau hauv qhov kub thiab txias, kev siv cov raj PE mus ntev ntev muaj kev nyab xeeb thiab txhim khu.
4. Kev ntsuas vuam
PPR dej yeeb nkab: vuam kub 260 ° C, yooj yim rau kev khiav lag luam, PPR dej yeeb nkab ua kom thoob, siv PPR yeeb nkab vuam tshuab hauv khw.
PE dej yeeb nkab: vuam kub siab yog 230 ° C, flange yog lus tsis yooj yim, thaiv yooj yim, cov khoom yooj yim kom oxidized, thiab nplaim oxide nplai yuav tsum tau muab cov npluag tawm los ntawm cov cuab yeej tshwj xeeb ua ntej welding.
5. Lub cev muaj zog tsawg
PPR dej yeeb nkab: PPR cov yeeb nkab muaj zog dua PE dej yeeb nkev. Thaum siv nyob rau hauv qis kub, txhua yam yeeb nkab yuav tsum tau insulated. Txwv tsis pub, cov yeeb nkab yuav tawg vim ntim zuj zus los ntawm cov dej khov.
PE dej xa: PE dej yeeb nkev ntau dua li PPR dej yeeb nkev. Thaum siv nyob rau hauv qis kub, txhua yam yeeb nkab yuav tsum tau insulated. Txwv tsis pub, cov yeeb nkab yuav tawg vim ntim zuj zus los ntawm cov dej khov.
Raws li cov saum toj no, PPR yeeb nkab yog tsim rau qhov kho kom zoo nkauj hauv tsev, thiab PE yeeb nkab yog tsim rau sab nraum zoov ib puag ncig. Ob leeg muaj lawv tus kheej zoo, thiab cov kav dej siv ob yam hauv kev tsim kho vaj tse.
