Kev ntsuas qhov sib npaug ntawm sab hauv thiab sab nraud lubrication hauv PVC yas ua yog qhov tseem ceeb.
(1) Tsis txaus lubrication sab hauv thiab sab nraud ua rau muaj kuab paug viscosity siab, siab plasticizing torque, hnyav yaj phab ntsa adhesion, thiab ntxhib sab hauv. Qhov no ua rau cov thermal decomposition ntxov ntxov thiab txo qis txhua yam khoom. Conversely, balanced lubrication kom ntseeg tau tam sim ntawd qhovntsej thiaj tsis mob ntawm cov ntaub ntawv xeem thaum sib cuag thiab tiv thaiv rotor nto los ntawm adhering rau melted khoom.
(2) Ntau lub lubrication sab hauv thiab sab nraud yields qis plasticizing torque thiab muaj peev xwm los nag. Txawm hais tias cov khoom yuav zoo li du, nws cov neeg kho tshuab lub zog poob qis, ua rau nws yooj yim tawg. Cov mob hnyav tuaj yeem ua rau muaj roj ntau thaum kov cov yas.
(3) Thaum cov lubricants sab hauv tsis tshua muaj thiab cov khoom sab nraud muaj ntau, lub sij hawm plasticizing ho lengthens vim muaj kev sib txhuam ntawm sab hauv thiab kev pheej hmoo ntawm thermal decomposition. Qhov xwm txheej no feem ntau ua rau lub zog plasticizing ntau dua thiab tuaj yeem ua rau muaj kev xav oily ntawm tus qauv saum npoo, thaum kawg ua rau cov khoom tawg.
(4) Hloov pauv, ntau dhau ntawm cov roj nplua nyeem sab hauv thiab qhov tsis txaus ntawm cov khoom sab nraud ua rau lub sijhawm plasticizing luv. Txawm li cas los xij, qhov no ua ntej plasticization ua rau cov resin rau ntau lub zog shear, ua rau muaj kev sib txuas lus thiab teeb meem hauv rotor tu. Tsis tas li ntawd, lub sij hawm thermal stability txo, uas yuav ua rau cov khoom decomposition thiab cov phab ntsa tsis sib xws.
Nyob rau hauv cov ntsiab lus, tsis txaus lubrication sab nraud ua rau adhesion, lub sij hawm luv plasticizing, thiab cov qauv ntxhib. External lubrication ntev ntev lub sij hawm plasticizing, txo cov neeg kho tshuab lub zog, thiab tej zaum yuav ua rau brittleness los yog nag lossis daus. Internal lubrication tsis txaus ua rau lub zog ntawm plasticizing torque thiab ncua sij hawm plasticizing, thaum lub sijhawm lubrication ntau dhau ua rau lub sijhawm plasticizing, tab sis kuj txo cov thermal stability thiab tuaj yeem ua rau thermal decomposition, uas ua rau cov phab ntsa tsis sib xws.
Feem ntau, lub zog tensile siab tshaj plaws tshwm sim ntawm 60% plasticity, thaum lub zog siab tshaj plaws yog pom ntawm 65%, thiab qhov loj tshaj elongation ntawm kev tawg yog tiav ntawm 70% plasticity.