Muaj ntau tus neeg tsis paub txog chlorinated polyethylene, thiab raws li lub npe qhia, feem ntau cov neeg tsuas yog yuav tsum pom tias nws yog cov khoom siv tshuaj lom neeg. Nws muaj cov txheej txheem hu ua extrusion molding, uas tseem ceeb heev hauv cov txheej txheem ntau lawm. Yog li hnub no, peb yuav tsum them sai sai rau dab tsi thaum lub sijhawm extrusion molding ntawm cov khoom no? Chlorinated polyvinyl chloride
1. Hauv cov mis nyuj raw rau kev tsim cov kav dej, yuav tsum tau them sai sai rau kev xaiv cov stabilizers thiab lwm yam khoom siv ua haujlwm, nrog rau qhov tseem ceeb tshaj plaws rau kev txhim kho kev txhim kho ntawm cov kua dej yaj thiab txhim kho kev ruaj khov thermal ntawm cov khoom siv raw. Yog tias tsim nyog, cov ntaub ntawv mis nyuj tuaj yeem sib xyaw ua ntej, thiab cov qauv me me tuaj yeem coj mus kuaj. Yog tias tsis muaj qhov pom tseeb ntawm kev hloov pauv lossis kev lwj hauv lub thawv muab khoom 230 ℃ rau 2 teev, nws qhia tau tias kev xaiv cov ntaub ntawv pabcuam yog qhov tsim nyog dua.
2. Qhov kub ntawm cov txheej txheem extrusion molding ntawm cov khoom siv chlorinated polyvinyl chloride yog siab dua li ntawm cov kav dej PVC me ntsis. Tab sis nws yuav tsum tau sau tseg tias qhov kev hloov pauv ntawm kev tswj kub tsis pub tshaj ± 5 ℃.
3. Thaum lub sijhawm tsim cov kav dej CPVC, yog tias muaj hluav taws xob tsis ua haujlwm, cov khoom siv tsis ua haujlwm, cov cim qhia tias cov khoom yaj yaj, lossis cov pa luam yeeb tawm ntawm lub qhov pwm, kev muab cov khoom siv rau hauv lub tshuab yuav tsum raug nres tam sim ntawd. Cov tshuaj PVC yuav tsum tau siv los tshem tawm cov khoom yaj CPVC ntawm lub tshuab lub qhov thiab pwm, thiab tom qab ntawd lub tshuab yuav tsum raug nres kom daws teeb meem.
4. Ua ntej cov tshuaj resin raug muab tso rau hauv kev tsim khoom, nws yuav tsum tau qhuav thiab kho hauv lub thawv muab khoom 80 ℃ rau 2-4 teev. Yog tias tsim nyog, cov khoom siv raw sib xyaw ua ke ceev ceev kuj yuav tsum tau lim los ntawm 40 mesh sieve ib zaug, thiab tom qab ntawd muab tso rau hauv lub extruder hopper rau kev tsim khoom.
5. Cov roj HCl uas tso tawm thaum lub sijhawm CPVC yaj lwj ua rau tib neeg muaj kev noj qab haus huv tsis zoo, thiab yuav tsum tau ua tib zoo saib xyuas qhov cua hauv lub chaw ua haujlwm tsim khoom.
6. Lub tshuab extrusion barrel, ntsia hlau, thiab cov khoom siv molten uas ntws los ntawm cov pwm molding siv rau kev tsim cov CPVC resin yuav tsum tau dhau los ntawm kev kho mob tiv thaiv xeb kom ntev lub neej kev pabcuam ntawm cov khoom siv.
Hauv cov txheej txheem tsim khoom tiag tiag, cov txheej txheem extrusion molding ntawm chlorinated polyvinyl chloride tseem nyuaj heev. Tau kawg, nws yog ib qho tseem ceeb uas yuav tsum xaiv cov khoom tsim nyog thaum siv nws hauv qee qhov xwm txheej, thiab peb yuav tsum xav txog qhov ntau npaum li cas ntawm cov khoom kom yooj yim siv tau zoo dua.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-16-2023
