Txhua tus neeg ua haujlwm hauv PVC ua cov khoom paub tias lub tshuab ua kom lubrication zoo yog lub valve kev nyab xeeb rau kev ua haujlwm zoo thiab cov khoom zoo. Txawm tias koj tsim cov kav dej ntws, cov qhov rai uPVC lossis cov khoom sib xyaw ua ke ntawm cov xov hluav taws xob, cov mis roj nplua nyeem zoo cuam tshuam ncaj qha rau qhov ceev ntawm kab, qhov tiav ntawm qhov chaw thiab kev sib xws ntawm cov khoom.

Txawm li cas los xij, muaj ib lo lus nug tseem pheej los txog: vim li cas calcium stearate thiaj li yog ib qho khoom xyaw tseem ceeb hauv PVC? Dab tsi ua rau nws txawv ntawm lwm cov khoom siv ntxiv xws li stearic acid thiab PE wax?

Tshaj Li Lubrication: 3 Lub Luag Haujlwm Tseem Ceeb ntawm Calcium Stearate

Calcium stearate yog cov roj nplua nyeem uas muaj ob yam txiaj ntsig, feem ntau yog cov roj nplua nyeem sab hauv. Tab sis nws cov txiaj ntsig hauv PVC systems suav nrog kev ua tiav, kev ruaj khov thiab tsos:

Kev Tswj Xyuas Qhov Yaj Viscosity

Los ntawm kev txo cov kev sib txhuam sab hauv ntawm cov khoom yas PVC, nws ua kom cov viscosity ntawm cov khoom yas zoo dua qub thiab txhim kho cov khoom siv ntws los ntawm cov khoom siv extrusion. Nws kuj tseem tiv thaiv cov cua sov ntau dhau, txo cov kev puas tsuaj hauv zos thiab kev kub hnyiab, thiab ua kom lub voj voog ua haujlwm ruaj khov.

Kev Ua Kom Acid Tsis Muaj Zog (Co-Thermal Stabilisation)

Qhov no yog ib qho tseem ceeb uas cov roj nplua nyeem ib txwm tsis muaj. Ua ib qho khoom siv los pab tswj cua sov, nws ntes cov hydrogen chloride (HCl) uas tso tawm thaum lub sijhawm PVC thermal degradation - tiv thaiv cov kua qaub los ntawm cov khoom siv corroding thiab pwm, thaum qeeb qeeb polymer saw dissection thiab txhim kho kev ua haujlwm ntev thermal aging.

Kev Txhim Kho Kev Tso Tawm Pwm

Nrog cov khoom siv roj nplua nyeem sab nraud me me, nws txhim kho kev tso tawm ntawm cov khoom siv thiab qhov pwm thiab txo qhov kev pheej hmoo ntawm kev lo. Tsis zoo li cov roj nplua nyeem sab nraud muaj zog, nws tsis ua rau tawg paj lossis tawm ntawm qhov chaw, thiab khaws cia qhov ci ntsa iab thiab qhov zoo ntawm cov khoom tiav.

Kev Txheeb Xyuas Txog Kev Siv Tshuab: 3 Yam Khoom Siv Uas Siv Tau Sib Txawv Li Cas

Ib lub tshuab ua kom lubrication zoo siv zog ntawm kev sib koom tes ntawm sab hauv thiab sab nraud. Txhua yam khoom ntxiv muaj lub luag haujlwm sib txawv; kev tsis meej pem ntawm lawv feem ntau ua rau kev tsim khoom tsis ua haujlwm:

Calcium Stearate: Lub roj nplua nyeem sab hauv nrog lubricity sab nraud tsis muaj zog

Ua haujlwm sab hauv cov yaj kom txhawb kev sib xyaw ua ke, thaum ua rau cov kua qaub nqus tau thiab sib koom ua ke. Nws tsim lub hauv paus ntawm lub tshuab lubrication thiab tsis yooj yim hloov pauv.

Stearic Acid: Cov roj nplua nyeem sab nraud ib txwm muaj

Ua haujlwm los ntawm kev tsiv mus rau qhov chaw yaj kom txo qhov kev sib txhuam ntawm cov khoom siv thiab cov hlau sib cuag. Siv ib leeg lossis ntau dhau, nws qeeb lub sijhawm gelation thiab feem ntau ua rau muaj qhov tsis zoo ntawm qhov chaw xws li tawg paj thiab exudation.

PE Wax: Cov roj nplua nyeem sab nraud ua haujlwm tau zoo

Tshwj xeeb rau kev txo cov hlau lo rau, ua kom qhov ci ntsa iab ntawm qhov chaw thiab ua kom cov kab ceev dua. Nws ua tau zoo dua stearic acid thaum kub siab, tab sis tsis muaj cov txiaj ntsig ntawm kev nqus acid lossis kev ruaj khov cua sov - nws yeej tsis tuaj yeem hloov calcium stearate.

Qhov Zais Cia rau Kev Tsim Khoom Ruaj Khov: Sib Npaug Koj Cov Roj Lubrication

Rau cov kws ua haujlwm thiab cov kws ua haujlwm zoo, tsis muaj cov roj nplua nyeem uas siv tau thoob ntiaj teb - tsuas yog cov mis sib npaug zoo xwb.

Kev siv lubrication sab hauv (uas yog siv calcium stearate) thiab kev siv lubrication sab nraud (uas yog siv PE wax los yog stearic acid) yuav tsum muaj qhov sib piv kom raug. Yog tias calcium stearate tsis txaus, lossis cov khoom uas muaj qhov me me tsis zoo, yuav ua rau cov hmoov sib sau ua ke, cov masterbatch tsis zoo thiab cov extruder muaj kev kub ntxhov, ua rau kev ua haujlwm thiab cov txiaj ntsig tsis zoo.

Cov ntaub ntawv tsim khoom dav dav lees paub tias 325-mesh calcium stearate muab kev sib kis zoo dua, gelation sib xws thiab qhov du zoo dua, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev ruaj khov, zoo PVC ntau lawm.

Peb muab cov calcium stearate qib siab nrog cov lus qhia meej thiab kev ua haujlwm sib xws, muaj nyob rau hauv cov thawv thauj khoom puv ntoob (FCL) los txhawb cov kab tsim khoom PVC loj.

Xav xa xov ncaj qha mus thov daim ntawv qhia txog cov ntaub ntawv txuj ci (TDS) lossis cov qauv kuaj.

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