PVC hauv Hlau thiab Cable: Cov Khoom Siv Uas Tseem Ceeb

1. PVC Resin

PVC resin yog ib qho linear thermoplastic polymer tsim los ntawm polymerization ntawm vinyl chloride monomers. Nws cov qauv molecular nta:

(1) Ua ib qho thermoplastic polymer, nws qhia tau tias muaj kev ywj pheej zoo thiab yooj ywm.

(2) Qhov muaj cov C-Cl polar bonds ua rau cov resin muaj zog polarity, ua rau muaj dielectric constant (ε) thiab dissipation factor (tanδ) siab, thaum muab dielectric zog siab ntawm cov zaus qis. Cov polar bonds no kuj pab txhawb rau cov zog intermolecular muaj zog thiab lub zog kho tshuab siab.

(3) Cov chlorine atoms hauv cov qauv molecular muab cov khoom tiv taus hluav taws nrog rau kev tiv taus tshuaj lom neeg thiab huab cua zoo. Txawm li cas los xij, cov chlorine atoms no cuam tshuam cov qauv crystalline, ua rau tsis tshua muaj kev tiv taus cua sov thiab tsis tshua muaj kev tiv taus txias, uas tuaj yeem txhim kho los ntawm cov khoom ntxiv kom zoo.

2. Hom PVC Resin

Cov txheej txheem polymerization rau PVC suav nrog: kev ncua polymerization, emulsion polymerization, bulk polymerization, thiab kev daws teeb meem polymerization.

Txoj kev polymerization suspension tam sim no yog qhov tseem ceeb hauv kev tsim cov PVC resin, thiab qhov no yog hom siv rau hauv cov ntawv thov hlau thiab cable.

Cov tshuaj PVC uas raug tsim los ntawm cov polymerized raug muab faib ua ob hom qauv:
Cov roj hmab xoob (XS-hom): Nws muaj cov qauv porous, nqus tau cov yas ntau, yooj yim plasticizing, yooj yim tswj kev ua tiav, thiab ob peb lub gel me me, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev siv hlau thiab cable.
Cov roj hmab compact-type (XJ-type): Feem ntau siv rau lwm cov khoom yas.

3. Cov Khoom Tseem Ceeb ntawm PVC

(1) Cov Khoom Siv Hluav Taws Xob Rwb Thaiv: Raws li cov khoom siv dielectric polar heev, PVC resin qhia tau tias muaj cov khoom siv hluav taws xob rwb thaiv zoo tab sis qis dua me ntsis piv rau cov khoom siv tsis yog polar xws li polyethylene (PE) thiab polypropylene (PP). Qhov ntim resistivity tshaj 10¹⁵ Ω·cm; ntawm 25 ° C thiab 50Hz zaus, qhov dielectric tas mus li (ε) ntau ntawm 3.4 txog 3.6, sib txawv ntau nrog qhov kub thiab zaus hloov pauv; qhov dissipation factor (tanδ) ntau ntawm 0.006 txog 0.2. Lub zog tawg tseem siab ntawm chav tsev kub thiab zaus fais fab, tsis cuam tshuam los ntawm polarity. Txawm li cas los xij, vim nws qhov kev poob dielectric siab, PVC tsis haum rau kev siv hluav taws xob siab thiab zaus siab, feem ntau siv ua cov khoom siv rwb thaiv tsev rau cov xov hluav taws xob qis thiab nruab nrab qis dua 15kV.

(2) Kev Ruaj Ntseg Rau Kev Laus: Txawm hais tias cov qauv molecular qhia txog kev ruaj ntseg zoo rau kev laus vim yog cov chlorine-carbon bonds, PVC feem ntau tso tawm hydrogen chloride thaum lub sijhawm ua haujlwm hauv qab kev ntxhov siab thermal thiab mechanical. Oxidation ua rau muaj kev puas tsuaj lossis kev sib txuas, ua rau muaj kev hloov pauv, embrittlement, poob qis hauv cov khoom siv kho tshuab, thiab kev puas tsuaj ntawm kev ua haujlwm rwb thaiv tsev hluav taws xob. Yog li ntawd, yuav tsum ntxiv cov stabilizers tsim nyog los txhim kho kev tiv thaiv kev laus.

(3) Cov Khoom Siv Thermomechanical: Raws li cov polymer amorphous, PVC muaj nyob rau hauv peb lub xeev lub cev ntawm qhov kub sib txawv: lub xeev iav, lub xeev siab-elastic, thiab lub xeev ntws viscous. Nrog rau qhov kub hloov iav (Tg) nyob ib puag ncig 80 ° C thiab qhov kub ntws txog 160 ° C, PVC hauv nws lub xeev iav ntawm chav tsev kub tsis tuaj yeem ua tau raws li cov kev cai thov hlau thiab cable. Kev hloov kho yog qhov tsim nyog kom ua tiav qhov elasticity siab dua ntawm chav tsev kub thaum tswj hwm qhov kub thiab txias txaus. Kev ntxiv cov plasticizers tuaj yeem kho qhov kub hloov iav tau zoo.

TxogIB LUB NTIJ TEB (OW Cable)

Ua ib lub tuam txhab ua cov khoom siv hlau thiab cable, ONE WORLD (OW Cable) muab cov khoom sib xyaw PVC zoo rau kev rwb thaiv tsev thiab kev siv sheathing, siv dav hauv cov xov hluav taws xob, cov xov hluav taws xob hauv tsev, cov xov hluav taws xob sib txuas lus, thiab cov xov hluav taws xob hauv tsheb. Peb cov ntaub ntawv PVC muaj cov khoom rwb thaiv tsev zoo heev, tiv taus hluav taws, thiab tiv taus huab cua, ua raws li cov qauv thoob ntiaj teb xws li UL, RoHS, thiab ISO 9001. Peb cog lus tias yuav muab cov kev daws teeb meem PVC txhim khu kev qha thiab pheej yig uas tsim los rau peb cov neeg siv khoom xav tau.