Kev ywj pheej
Qhov kev ywj pheej ntawm cov yeeb nkab polyethylene tso cai rau nws kom nkhaus hla, hauv qab, thiab nyob ib puag ncig cov teeb meem nrog rau kev hloov pauv qhov siab thiab kev coj ua.Qee zaum, qhov yooj ywm ntawm cov yeeb nkab yuav ua rau tsis tas siv cov khoom siv thiab txo cov nqi teeb tsa.
CHUANGRONG PE yeeb nkab tuaj yeem khoov rau qhov tsawg kawg nkaus ntawm 20 txog 40 npaug ntawm txoj kab uas hla ntawm cov yeeb nkab, uas feem ntau nyob ntawm SDR ntawm cov yeeb nkab tshwj xeeb.
Rooj Yam tsawg kawg nkaus tso cai bend lub vojvoog ntawm HDPE yeeb nkab ntawm 23℃
| SDR ntawm cov kav dej | Mininumallowable bend radfus,Rmin |
| 6 7.4 | Rmin >20 × dn Rmin>20 × dn |
| 9 | Rmin>20 × dn* |
| 11 | Rmin>25 × dn* |
| 13.6 Rmin> 25 × dn* | |
| 17 | Rmin>27 × dn* |
| 21 | Rmin>28 × dn* |
| 26 | Rmin >35 × dn* |
| 33 | Rmin>40 × dn* |
*dn: yog lub nominal sab nraud txoj kab uas hla, hauv millimeters
Lub Teeb Nyhav
Lub Neej Xav Tau
Qhov ceev ntawm cov khoom siv PE tsuas yog 1/7 ntawm cov hlau xwb. Qhov hnyav ntawm cov yeeb nkab PE tsawg dua li cov hlau cam khwb cia, lossis cov yeeb nkab hlau. Lub kaw lus PE kav dej yooj yim rau kev tuav thiab teeb tsa, thiab txo cov neeg siv zog thiab cov khoom siv yuav ua rau txuag tau kev teeb tsa.
Lub hauv paus tsim hydrostatic rau CHUANGRONG yeeb nkab yog raws li cov ntaub ntawv kuaj hydrostatic dav dav uas tau ntsuas los ntawm cov txheej txheem kev lag luam txheem. Tus cwj pwm mus sij hawm ntev rau kev tiv thaiv siab sab hauv uas muab los ntawm cov kab nkhaus hydrostatic zog raws li tus qauv EN ISO 15494 (saib ntu X). Cov kev txwv ntawm daim ntawv thov rau cov yeeb nkab thiab cov khoom siv, raws li pom hauv daim duab siab-kub, tuaj yeem tau los ntawm cov kab nkhaus no, uas qhia tias cov yeeb nkab muaj lub neej ntev li ntawm 50 xyoo thaum thauj dej ntawm 20 ℃. Cov xwm txheej sab hauv thiab sab nraud ib puag ncig yuav hloov pauv lub neej xav tau lossis hloov pauv lub hauv paus tsim qauv pom zoo rau ib daim ntawv thov.
Kev Tiv Thaiv Huab Cua
Cov Khoom Siv Thermal
Kev puas tsuaj ntawm cov yas tshwm sim los ntawm cov txheej txheem ntawm kev puas tsuaj ntawm qhov chaw, lossis oxidation, vim muaj kev sib xyaw ua ke ntawm cov hluav taws xob ultraviolet, qhov kub thiab txias nce ntxiv, thiab cov dej noo thaum cov kav dej khaws cia rau hauv qhov chaw uas raug tshav ntuj. Cov kav dej polyethylene dub, uas muaj 2 txog 2.5% cov pa roj carbon dub faib ua me me, tuaj yeem khaws cia rau sab nraum zoov hauv feem ntau huab cua tau ntau xyoo yam tsis muaj kev puas tsuaj los ntawm kev raug tshav ntuj ultraviolet. Cov pa roj carbon dub yog cov khoom siv zoo tshaj plaws los txhim kho cov yam ntxwv ntawm kev puas tsuaj ntawm cov khoom siv yas. Lwm cov xim xws li dawb, xiav, daj lossis lilac tsis muaj kev ruaj khov zoo ib yam li cov xim dub thiab lub sijhawm raug tshav ntuj yuav tsum txwv rau ib xyoos rau kev khaws cia zoo tshaj plaws ntawm cov khoom. Nrog cov xim no, cov txheej txheem oxidation sab nraud ntawm qhov chaw tsim kho sai dua li cov hauv cov pa roj carbon dub.
Cov kav dej PE uas ruaj khov. Cov kav dej xim no tsis pom zoo rau kev siv saum av.
Cov kav dej Polyethylene siv tau rau qhov kub ntawm -50 ° C txog +60 ° C. Thaum kub siab dua, lub zog tensile thiab qhov tawv ntawm cov khoom raug txo qis. Yog li ntawd, thov saib daim duab qhia siab-kub. Rau qhov kub hauv qab O ° C yuav tsum tau ua kom ntseeg tau tias cov khoom nruab nrab tsis khov, kom tsis txhob ua rau lub cev kav dej puas tsuaj.
Ib yam li txhua yam thermoplastics, PE qhia tau tias muaj kev nthuav dav thermal ntau dua ntawm cov hlau. Peb PE muaj qhov sib npaug ntawm kev nthuav dav thermal linear ntawm 0.15 txog 0.20mm / m K, uas yog 1.5 npaug ntau dua li ntawm piv txwv li. PVC. Raws li qhov no raug coj mus rau hauv tus account thaum lub sijhawm npaj ntawm kev teeb tsa yuav tsum tsis muaj teeb meem hauv qhov no.
Qhov thermal conductivity yog 0.38 W/m K. Vim yog cov yam ntxwv ntawm kev rwb thaiv tsev, lub kaw lus PE piping system yog qhov pheej yig dua piv rau lub kaw lus ua los ntawm cov khoom siv xws li tooj liab.
Kev coj cwj pwm kub hnyiab
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Polyethylene yog cov yas uas yooj yim hlawv. Cov pa oxygen index yog 17%. (Cov khoom uas hlawv nrog tsawg dua 21% ntawm cov pa oxygen hauv huab cua suav tias yog cov uas yooj yim hlawv).
PE ntws thiab txuas ntxiv mus hlawv tsis muaj hmoov av tom qab tshem tawm nplaim taws. Yeej, cov tshuaj lom raug tso tawm los ntawm txhua txoj kev hlawv. Carbon monoxide feem ntau yog cov khoom hlawv uas txaus ntshai tshaj plaws rau tib neeg. Thaum PE hlawv, feem ntau yog carbon dioxide, carbon monoxide thiab dej tsim.
Qhov kub ntawm tus kheej yog 350 ℃.
Cov tshuaj tua hluav taws uas tsim nyog yog dej, ua npuas dej, carbon dioxide lossis hmoov.
Kev Tiv Thaiv Kab Mob
Cov kav dej PE tej zaum yuav raug kev puas tsuaj los ntawm cov khoom siv hauv lub cev xws li cov ntsaum lossis cov nas. Qhov kev tiv thaiv kev tawm tsam yog txiav txim siab los ntawm qhov nyuaj ntawm PE siv, qhov geometry ntawm PE nto, thiab cov xwm txheej ntawm kev teeb tsa. Hauv cov kav dej me me, cov ntu phab ntsa nyias yuav raug puas tsuaj los ntawm kab ntsaum hauv cov xwm txheej hnyav. Txawm li cas los xij, kev puas tsuaj feem ntau yog vim kab ntsaum tawm tsam hauv PE tom qab ntawd tau pom tias yog vim lwm qhov chaw ntawm kev puas tsuaj kho tshuab.
Cov kav dej PE feem ntau tsis raug cuam tshuam los ntawm cov kab mob hauv av thiab hauv dej hiav txwv, thiab qhov xwm txheej paraffinic ntawm cov kav dej PE ua rau qeeb txoj kev tsim cov av hauv dej hiav txwv thaum siv.
Cov Khoom Siv Hluav Taws Xob
Vim tias PE nqus dej tsawg, nws cov khoom hluav taws xob tsis tshua cuam tshuam los ntawm kev sib cuag dej tas mus li. Vim tias PE yog cov polymer hydrocarbon uas tsis yog polar, nws yog cov khoom rwb thaiv tsev zoo heev. Txawm li cas los xij, cov khoom no tuaj yeem ua rau puas tsuaj ntau dua vim yog kev ua qias tuaj, kev cuam tshuam ntawm cov khoom oxidizing lossis huab cua. Qhov tsis kam ntawm qhov ntim tshwj xeeb yog> 1017 Ωcm; lub zog dielectric yog 220 kV / hli.
Vim tias muaj peev xwm tsim cov nqi hluav taws xob, kev ceev faj raug pom zoo thaum siv PE hauv cov ntawv thov uas muaj kev phom sij ntawm hluav taws lossis tawg.
CHUANGRONGyog ib lub tuam txhab sib koom ua lag luam thiab kev lag luam, tsim muaj xyoo 2005 uas tsom mus rau kev tsim cov kav dej HDPE, Fittings & Valves, PPR Pipes, Fittings & Valves, PP compression fittings & Valves, thiab muag cov tshuab vuam yas, cov cuab yeej yeeb nkab, cov cuab yeej kho yeeb nkab thiab lwm yam.
Yog tias koj xav tau cov ntaub ntawv ntxiv, thov hu rau peb +86-28-84319855, chuangrong@cdchuangrong.com, www.cdchuangrong.com
Lub sijhawm tshaj tawm: Kaum Ib Hlis-14-2024
