Cov txiaj ntsig ntawm kev siv chlorinated polyethylene (CPE) hauv PVC ntoo yas composite cov ntaub ntawv yog dab tsi?

1. Txhim kho qhov muaj zog thiab kev cuam tshuam
Txhim kho kev tawv: CPE, ua ib qho elastomer, txhim kho qhov brittleness ntawm PVC matrix los ntawm kev sib xyaw lub cev, txhim kho lub zog cuam tshuam ntawm cov khoom sib xyaw. Cov kev sim tau qhia tias kev ntxiv 10 feem ntawm CPE tuaj yeem ua rau lub zog cuam tshuam ntawm cov yas ntoo PVC ua npuas ncauj los ntawm 20%. Bontecn Group Tuam Tshoj cov yas ntoo tshwj xeeb CPE tuaj yeem txhim kho cov khoom tawv thiab txo cov nqi tsim khoom. Txais tos nug.
Kev ua haujlwm kub qis: Cov khoom siv txhawb nqa molecular saw hlau ntawm CPE ua rau nws yooj ywm hauv qhov chaw kub qis, zam kev tawg ntawm qhov kub qis.
2. Txhim kho kev ua haujlwm thiab kev sib raug zoo
Kev sib txuas ntawm cov interface: Cov nroj tsuag fibers (xws li cellulose) muaj ntau pawg hydroxyl thiab tsis sib haum xeeb nrog hydrophobic PVC. Cov polar chlorine atoms thiab cov qauv tsis yog polar ntawm CPE ua haujlwm ua "choj" los txhim kho qhov kev sib txuas ntawm cov fibers thiab PVC, txo qhov sib cais theem.
Txhim kho qhov ua kom yaj tau zoo: CPE txo qhov viscosity ntawm yaj, txo qhov puas tsuaj ntawm kev ua tiav cov dej ntws los ntawm kev sau ntau ntawm cov hmoov ntoo, thiab ua rau kev sib tov thiab extrusion molding du dua.
Kev tshawb fawb txog kev ua haujlwm qhia tau hais tias 5 phr CPE tuaj yeem txhawb kev tsim PVC gel thiab ua rau kom muaj qhov sib xyaw ua ke ntawm cov yaj; Ntawm 10 feem, qhov viscosity raug txo kom sib npaug ntawm kev ua haujlwm zoo thiab kev ua tau zoo.
3. Kev txhim kho cov yam ntxwv ntawm kev ua haujlwm
Kev txhim kho kev tiv thaiv hluav taws: Cov ntsiab lus chlorine ntau dua ntawm CPE (qhov zoo dua yog 36-38%), qhov tseem ceeb dua qhov cuam tshuam ntawm kev tiv thaiv hluav taws. Nws cov chlorine atoms tso tawm hydrogen chloride thaum lub sijhawm hlawv kom tiv thaiv kev kis hluav taws.
Kev tiv thaiv huab cua thiab kev ruaj khov: Cov qauv molecular saturated ntawm CPE muab cov ntaub ntawv sib xyaw nrog kev tiv thaiv kev laus zoo heev, kev tiv thaiv ozone, thiab kev tiv thaiv tshuaj lom neeg corrosion, txuas ntxiv lawv lub neej kev pabcuam sab nraum zoov.
4, Kev tswj hwm cov khoom siv kho tshuab
Lub zog thiab kev sib npaug ntawm kev sib zog: Kev siv CPE kom raug (5-15 qhov) tuaj yeem txhim kho kev tawv thaum tswj hwm lub zog tensile, kev tawv, thiab kev tiv thaiv kev nkag mus. Kev ntxiv ntau dhau yuav ua rau lub zog txo qis, uas yuav tsum tau tswj hwm los ntawm kev ua kom zoo dua ntawm cov mis.
5. Kev Txheeb Xyuas
CPE daws cov teeb meem ntawm kev tawg yooj yim, kev ua haujlwm nyuaj, thiab kev kub hnyiab hauv PVC ntoo yas sib xyaw los ntawm plaub lub tshuab ua kom tawv, kev sib raug zoo ntawm interface, kev pabcuam ua haujlwm, thiab kev txhim kho kev ua haujlwm, ua lub hauv paus tseem ceeb rau lawv txoj kev loj hlob zoo. Kev xaiv CPE nrog cov ntsiab lus chlorine ntawm 35-38% thiab ua kom zoo dua qhov ntxiv (feem ntau yog 5-15 qhov) tuaj yeem ua tiav qhov sib npaug ntawm kev ua tau zoo thiab tus nqi.