Cov Ntaub Ntawv Nthuav Qhia ntawm Cable Sab Nraud Sheath

PVC yog cov khoom siv dav tshaj plaws hauv kev lag luam cable, nyob deb. Thaum koj qhib cov khoom siv hauv tsev lossis lub thawv xa khoom ntawm lub tsev zoo tib yam, ntau dua 90% ntawm cov tawv nqaij sab nraud ntawm cov xov hlau thiab cov cables sab hauv yog PVC.

Qhov zoo:

Tus nqi qis: Ntawm tag nrho cov khoom siv cable, nws yog qhov pheej yig tshaj. Cov txheej txheem txheej txheem yog mature.

Mos thiab yooj yim rau siv: Zoo yoog raws, yooj yim rau strips thiab txuas, kev tsim kho siab.

Tsis muaj zog:

Thaum PVC ntes hluav taws, nws yuav tso tawm ntau cov pa luam yeeb dub thiab hydrogen chloride (HCl) gas - thaum raug dej, nws hloov mus ua hydrochloric acid, uas tuaj yeem ua rau cov khoom siv hluav taws xob corrode thiab ua rau lub ntsws ua pa.
Ib txwm PVC ua nyuaj thiab nkig ntau dua hauv qab -15℃, thiab nquag tawg thaum lub caij ntuj no tsim; Qhov kub ua hauj lwm tas mus li yog feem ntau tsuas yog 70 degree, thiab nws yuav ua rau soften thiab deform nyob rau hauv high-temperature ib puag ncig.

Hla-txuas polyethylene (XLPE) yog cov khoom tau los ntawm kev sib txuas los yog lub cev hla- txuas polyethylene (PE). Hauv cov ntsiab lus yooj yim, nws yog cov txheej txheem ntawm "welding" cov saw hlau molecular ntawm PE rau hauv cov qauv sib txuas, uas ncaj qha txhim kho kev ua haujlwm.

Qhov zoo:

Kev kub siab ua haujlwm thiab muaj peev xwm nqa tam sim no: Kev ua haujlwm tsis tu ncua tuaj yeem ncav cuag 90 degree, thiab nws tuaj yeem tiv taus 250℃hauv luv luv Circuit Court (thaum PVC tsuas tuaj yeem tiv taus 70℃thiab 160 degree). Nrog tib tus neeg xyuas pib hla -section, XLPE cables tuaj yeem xa tawm tam sim no ntau dua.

Zoo txhua yam muaj zog thiab tshuaj tiv thaiv: Ntau hnav-tiv taus, roj ntau dua- tiv taus, thiab tiv taus ib puag ncig kev ntxhov siab ntau dua li PVC.

Qhov tsis zoo:

kim tshaj PVC. Cov khoom siv kuj yog ib qho nyuaj thiab nws yooj yim dua rau cov roj hmab-raws li cov ntaub ntawv.

Cov nplaim retardancy yog qhov nruab nrab (nws yuav tsum tau kho nrog cov nplaim hluav taws kom ncav cuag cov nplaim hluav taws kub).

Tsawg- pa taws thiab halogen- cov ntaub ntawv pub dawb, plaub lo lus tseem ceeb: Txuag txoj sia thaum muaj hluav taws. Nws lub hom phiaj tsim tsis yog "tsis txhob hlawv", tab sis "txawm tias nws hlawv, nws yuav tsis ua mob rau tib neeg".
Qhov zoo:
Cov pa luam yeeb tsawg heev: Thaum muaj hluav taws kub, qhov pom kev siab siab, ua kom yooj yim rau kev khiav tawm ntawm cov neeg ua haujlwm thiab kev tua hluav taws.
Ua tau raws li cov qauv kev nyab xeeb hluav taws kub nruj: Feem ntau tuaj yeem dhau cov qauv kev nyab xeeb thoob ntiaj teb xws li IEC60332, IEC60754, IEC61034.
Qhov tsis zoo:
Tus nqi siab dua PVC thiab XLPE zoo tib yam.
Cov khoom siv kuj yog ib qho nyuaj, thiab nws qhov yooj yim yog qis dua rau PVC ntawm qhov kub thiab txias.

Yog hais tias lub cable yuav tsum tau twisted nrog rau cov cuab yeej ntawm tus neeg hlau caj npab, los yog dragged rov qab rau hauv av, zoo tib yam cov ntaub ntawv yas yuav sai sai hnav thiab tawg. Lub sijhawm no, yam xav tau yog thermoplastic elastomer (TPE).

Qhov zoo

Zoo ib yam li elasticity ntawm cov roj hmab thiab cov txheej txheem yooj yim ntawm cov yas, nws cov nqi feem ntau qis dua TPU.

Qhov tsis zoo: Qhov zoo ntawm TPE ntawm kev ua lag luam txawv heev. Cov khoom sib txawv muaj qhov sib txawv ntawm qhov kub thiab txias, roj tsis kam, thiab hardness. Thaum xaiv, ib tug yuav tsum tau ceev faj tshwj xeeb.

Txoj hauj lwm ntawm cov kab no hauv kev lag luam yog qhov tshwj xeeb: nws tuaj yeem tiv taus qhov kub txog li 200 degree, tiv taus -60℃txias, thiab nyob twj ywm nyob rau hauv xws li qhov kub thiab txias ntau yam. Tsis muaj cov ntaub ntawv hais saum toj no, xws li PVC, XLPE, lossis LSZH, tuaj yeem ua tiav qhov no.

Qhov zoo:

Ntau qhov kub thiab txias: Kev ua haujlwm kub yog li ntawm -60℃mus rau +200 degree, uas yog nws cov ntsiab lus muag. Ordinary PVC ua nkig ntawm -15 degree, XLPE kuj tseem nyuaj ntawm qhov kub thiab txias, thiab silicone tuav elasticity nyob rau hauv qhov chaw txias.

Kev laus ua haujlwm thiab huab cua tsis kam: tiv taus ozone, ultraviolet rays, thiab hluav taws xob, nrog rau lub neej ntev. Ntxiv mus, tom qab hlawv, nws tsim ib txheej ntawm silicon dioxide (SiO₂) rwb thaiv tsev, tiv thaiv cov neeg xyuas pib luv luv.

Mos thiab yooj yim rau nruab: Ntawm tag nrho cov ntaub ntawv cable, nws cov softness tuaj yeem hais tau nyob rau hauv qib siab, tshwj xeeb tshaj yog haum rau cov xwm txheej uas xav tau kev hloov pauv hloov pauv.

Qhov tsis zoo:

Tsis resistant rau roj los yog corrosion: Ua tsis zoo nyob rau hauv cov roj thiab cov organic hnyav ib puag ncig, thiab lub sheath yog nquag o los yog puas.

Tus nqi siab: Txawm hais tias tus nqi tau poob qis dua kaum xyoo dhau los, nws tseem ntau dua li PVC.