Xov xwm

Keeb kwm ntawmCov khoom siv silicone / Silicone masterbatch / Siloxane masterbatchthiab nws ua haujlwm li cas hauvcov hlau thiab cov cable sib xyawkev lag luam?

Cov khoom siv silicone nrog50% ua haujlwm silicone polymerfaib rau hauv cov cab kuj zoo li polyolefin lossis cov ntxhia, nrog rau daim ntawv ntawm granular lossis hmoov, dav siv ua cov khoom pab hauv kev lag luam hlau & cable. Cov khoom lag luam zoo liSILOXANE MB50ua haujlwm ua cov roj nplua nyeem lossis rheological modifier hauv kev lag luam hlau & cable thiab nws tau qhia thawj zaug los ntawm Dow Corning hauv Tebchaws Meskas nees nkaum xyoo dhau los, tom qab ntawdLwm txoj hauv kev SILICONE MASTERBATCH MB50tau tshwm sim hauv kev ua lag luam nrog70% ua haujlwm silicone polymerdispersed nyob rau hauv lub cab kuj zoo li silica, nrog rau daim ntawv ntawm granular zoo li, ces cov khoom los ntawm Chengdu Silike tshwm sim nyob rau hauv kev ua lag luam los ntawm xyoo 2004, nrog silicone cov ntsiab lus los ntawm 30-70% thiab granular lossis hmoov daim ntawv.

Cov kev cai ntawm cov khoom siv silicone masterbatch yuav tsum muaj cov ntsiab lus hauv qab no:

(1) Thaum ua haujlwm ua roj nplua nyeem lossis rheological modifier, cov ntsiab lus ntawm 5 txog 50%

(2) Tus neeg nqa khoom yuav tsum sib xws nrog silicone thiab tus neeg siv lub ntsiab mis substrate yuav tsum tau xav txog, nrog rau lub npe polymer qhia thiab yaj index ntawm tus neeg nqa khoom, yog li cov neeg siv tuaj yeem xa mus rau nws thaum tsim cov mis. Yog tias cov hmoov av inorganic siv ua tus neeg nqa khoom, lub npe hmoov yuav tsum tau qhia. Qhov dawb thiab fineness ntawm cov hmoov inorganic yog qhov tseem ceeb rau cov neeg siv khoom, thiab cov hmoov dawb thiab micron loj yuav tsum tau xaiv ntau li ntau tau rau kev tsim khoom.

Thaum ua haujlwm ua cov roj nplua nyeem lossis cov khoom hloov pauv rheological

Rau cov khoom siv polyethylene

Raws li peb paub zoo, qhov tshwm sim ntawm "tawv nqaij ntses" feem ntau tshwm sim thaum extruding polyethylene insulated lossis sheathed xov hlau thiab cables, tshwj xeeb tshaj yog thaum extruding linear low-density polyethylene (LLDPE) lossis ultra-low density polyethylene (ULDPE lossis POE). Cov ntaub ntawv polyethylene extruded cross-linked (seb peroxide cross-linking lossis silane cross-linking) kuj qee zaum ntsib qhov tshwm sim "tawv nqaij ntses", vim tsis txaus xav txog lubrication system hauv cov mis khoom. Kev coj ua thoob ntiaj teb tam sim no yog ntxiv cov fluoropolymers me me rau hauv cov mis, tab sis tus nqi siab thiab daim ntawv thov tsawg.

Nrog ib qho me me ntawmsilicone uas muaj molecular hnyav heev(0.1-0.2%) rau polyethylene lossis cross-linked polyethylene tuaj yeem tiv thaiv tau qhov tsim ntawm "daim tawv nqaij ntses". Tib lub sijhawm, nrog nws cov nyhuv lubrication, nws tuaj yeem txo qhov extrusion torque kom tiv thaiv lub cev muaj zog rub los ntawm kev nres vim muaj kev thauj khoom ntau dhau.

Cov silicone siv ua roj nplua nyeem, vim nws tsis tshua muaj ntxiv, yuav tsum tau muab faib sib npaug zos rau hauv cov khoom siv kom nws ua haujlwm thaum lub sijhawm ua tiav. Vim yog qhov tsis muaj zog ntawm cov tshuaj lom neeg ntawm silicone, nws yuav tsis cuam tshuam nrog cov khoom hauv cov mis. Nws raug pom zoo tias lub Hoobkas khoom siv cable sib tov silicone sib npaug zos rau hauv cov txheej txheem plasticizing granulation kom yooj yim rau kev siv ntawm lub Hoobkas cable.

RauCov tshuaj sib xyaw ua ke ntawm cov xov hlau uas tsis muaj halogen (HFFR) 

Vim muaj ntau cov tshuaj tua hluav taws (hmoov av) hauv HFFR cable compounds, uas ua rau muaj viscosity siab thiab tsis ntws zoo thaum lub sijhawm ua tiav; Qhov viscosity siab ua rau nws nyuaj rau lub cev muaj zog rub thaum lub sijhawm extrusion, thiab qhov tsis zoo fluidity ua rau muaj me ntsis ntawm cov kua nplaum tsim thaum lub sijhawm extrusion. Yog li, thaum lub Hoobkas cable extrudes halogen-free cables, qhov ua tau zoo tsuas yog 1/2-1/3 ntawm polyvinyl chloride cable.

Nrog rau qee qhov silicone hauv cov mis, tsis yog tsuas yog ua cov txheej txheem zoo li kev ntws tau zoo dua tab sis kuj tau txais kev tiv thaiv hluav taws zoo dua rau cov khoom siv.