Abstract:
Qhov kev sim no yog txhawm rau ntsuas qhov ntws ntawm cov khoom siv yas sib txawv los pab cov khoom siv yas hauv kev xaiv cov khoom tsim nyog.Los ntawm kev ua cov qauv ntsuas hauv chav kuaj, peb muab piv rau ntau yam khoom siv yas thiab tshuaj xyuas lawv qhov sib txawv ntawm qhov ntws.Cov txiaj ntsig kev sim ua kom pom qhov sib cuam tshuam tseem ceeb ntawm qhov ntws ntawm cov khoom siv yas thiab cov dej ntws tawm thaum lub sij hawm ua, uas muaj kev cuam tshuam tseem ceeb rau kev tsim cov khoom yas nrog cov duab sib txawv thiab qhov ntau thiab tsawg.Kab lus no muab cov ncauj lus ntxaws ntxaws ntawm kev sim tsim, cov ntaub ntawv thiab cov txheej txheem, cov txiaj ntsig kev sim, thiab kev tshuaj xyuas, muab cov ntaub ntawv muaj txiaj ntsig zoo rau kev xaiv cov khoom siv thiab kev ua kom zoo tshaj plaws hauv cov khoom siv yas.
1. Taw qhia
Yas ib feem ua cov nroj tsuag feem ntau siv ntau hom yas raw cov ntaub ntawv thaum lub sij hawm tsim cov txheej txheem, thiab cov flowability ntawm cov ntaub ntawv no ncaj qha cuam tshuam rau qhov zoo ntawm cov yas tsim.Yog li, kev ntsuas qhov ntws ntawm cov khoom siv yas yog qhov tseem ceeb rau kev ua kom zoo dua cov txheej txheem, txhim kho kev tsim khoom, thiab txo cov nqi.Qhov kev sim no yog siv cov txheej txheem kev sim ntsuas los sib piv cov yam ntxwv ntws ntawm cov khoom siv yas sib txawv thiab muab kev taw qhia rau kev xaiv cov khoom tsim nyog hauv kev ua cov yas.
2. Kev sim tsim
2.1 Kev Npaj Khoom Siv
Peb cov ntaub ntawv yas raw khoom raug xaiv los ua cov kev xeem: polyethylene (PE), polypropylene (PP), thiab polystyrene (PS).Xyuas kom meej tias txhua tus qauv ntawm cov khoom siv los ntawm tib lub hauv paus thiab tswj xyuas qhov zoo ib yam kom tshem tawm cov kev sim tsis zoo vim muaj cov khoom sib txawv.
2.2 Cov cuab yeej sim
- Melt Flow Index Tester: Siv los ntsuas Melt Flow Index (MFI) ntawm cov khoom siv yas, qhov tseem ceeb rau kev ntsuas qhov ntws ntawm cov yas molten.
- Qhov Ntsuas Ntsuas: Siv kom raug ntsuas qhov hnyav ntawm cov khoom siv yas raw khoom.
- Melt Flow Index Test Barrel: Siv los thauj cov qauv raws li tus qauv yuav tsum tau ua.
- Rhaub: Siv los ua kom sov thiab tuav lub Melt Flow Index Tester ntawm qhov xav tau.
- Timer: Siv los xam lub sij hawm ntws ntawm cov yas molten.
2.3 Cov txheej txheem sim
1. Txiav txhua cov khoom siv raw khoom coj mus rau hauv cov qauv ntsuas cov khoom thiab qhuav rau 24 teev nyob rau hauv chav tsev kub kom ntseeg tau tias cov qauv saum npoo tsis muaj dej noo.
2. Teem kom tsim nyog ntsuas kub thiab thauj khoom ntawm Melt Flow Index Tester thiab ua peb qhov kev xeem rau txhua yam khoom raws li cov txheej txheem txheem.
3. Muab txhua tus qauv raw khoom rau hauv Melt Flow Index Testing Barrel thiab tom qab ntawd mus rau hauv lub rhaub preheated kom txog thaum tus qauv yog tag nrho melted.
4. Tso cov ntsiab lus ntawm lub thoob, tso cai rau cov yas molten kom dhau los ntawm cov pwm uas tau teev tseg, thiab ntsuas qhov ntim ntawm cov pwm nyob rau hauv ib lub sij hawm tau teev tseg.
5. Rov ua qhov kev sim peb zaug thiab xam qhov nruab nrab Melt Flow Index rau txhua qhov qauv.
3. Kev sim thiab kev soj ntsuam
Tom qab ua peb qhov kev ntsuam xyuas, qhov nruab nrab Melt Flow Index rau txhua cov khoom siv yas raug txiav txim siab, thiab cov txiaj ntsig tau raws li hauv qab no:
- PE: Nruab Nrab Melt Flow Index ntawm X g / 10min
- PP: Nruab Nrab Melt Flow Index ntawm Y g / 10min
- PS: Nruab Nrab Melt Flow Index ntawm Z g / 10min
Raws li cov txiaj ntsig kev sim, nws pom tseeb tias cov khoom siv yas sib txawv muaj qhov sib txawv tseem ceeb hauv kev ntws.PE ua kom pom qhov zoo ntawm cov dej ntws zoo, nrog rau qhov siab Melt Flow Index, ua rau nws tsim nyog rau molding complex-shaped yas qhov chaw.PP muaj cov dej ntws nruab nrab, ua rau nws tsim nyog rau feem ntau cov haujlwm ua haujlwm yas.Hloov pauv, PS nthuav tawm cov dej ntws tsis zoo thiab yog qhov zoo tshaj plaws rau kev tsim cov khoom me me thiab nyias-walled yas.
4. Cov lus xaus
Lub chaw soj ntsuam ntawm cov khoom yas raw khoom flowability tau muab cov ntaub ntawv Melt Flow Index rau cov khoom sib txawv, nrog rau kev tshuaj xyuas ntawm lawv cov yam ntxwv flowability.Rau cov khoom siv yas, xaiv cov ntaub ntawv tsim nyog yog qhov tseem ceeb tshaj plaws, vim tias qhov sib txawv ntws ncaj qha cuam tshuam qhov zoo ntawm cov khoom yas 'kev tsim thiab kev tsim khoom.Raws li cov txiaj ntsig kev sim, peb pom zoo kom ua ntej PE raw khoom rau kev tsim cov khoom yas zoo li qub, siv PP raw khoom rau kev xav tau dav dav, thiab xav txog PS raw khoom los tsim cov khoom me me thiab nyias-walled yas.Los ntawm kev xaiv cov khoom siv txiav txim siab, cov nroj tsuag ua haujlwm tuaj yeem txhim kho cov txheej txheem tsim khoom, txhim kho cov khoom zoo, txo cov nqi tsim khoom, thiab txhim kho kev lag luam kev sib tw.
Post lub sij hawm: Lub Xya hli ntuj-25-2023
