Cov khoom sib ntxiv tshiab rau cov yas ntxiv

PVC ua kev hloov kho YMs - cov khoom lag luam yog cov tuam txhab yuav ua tiav qib siab polymer synthesis tshuab thiab tsinghua tsev kawm ntawv qib siab bai cheng chemical engineering laboratory ntawm nano technology, kev sib xyaw ntawm kev tshawb fawb thiab kev loj hlob ntawm ib hom tshiab hloov tshiab PVC ua cov tshuaj tiv thaiv AIDS, nws ua kom siv tag nrho. ntawm cov khoom siv nanometer muaj ntau dua thaj tsam thaj chaw, cov yam ntxwv ntawm lub zog saum npoo dawb zog yog qhov loj, kom kov yeej cov kev ua cov tsoos PVC ua kev pabcuam hauv qhov tsis xws ntawm kev ua kom muaj yas ntawm kev kub hloov qis. Hauv kev ua cov txheej txheem, lub zog muaj zog nto ntawm nanomaterials pauv mus rau sab hauv kev sib txhuam nrog PVC lwg me me, vim tias qhov kev sib txhuam sab hauv no nce nrog qhov kub tsawg zuj zus, uas txhim kho qhov teeb meem uas plasticizability ntawm ACR ib txwm cuam tshuam nrog qhov kub tsawg dua.
Piv nrog ACR qub, HLN - cov khoom lag luam muaj cov cwj pwm hauv qab no:
1) ruaj khov kho kom ruaj khov zoo dua li tsoos ua cov pabcuam.
2) Thaum lub ntsuas kub hloov, lub shear quab yuam hloov pauv raws li, uas tuaj yeem ua rau plasticization qib ntawm PVC tsis hloov.
3) tuaj yeem txhim kho kev ua tiav zoo ntawm PVC, txhim kho qhov ua tiav ntawm cov khoom tiav. ⒉1 Kev ntsuas tus qauv
1) Kev soj ntsuam cov tsos
2) Txaus siab tau ntsuas raws li GB / T2914
3) Lub particle loj tau ntsuas raws li GB / 2916
4) Kev siv tshuab hauv lub siab tuaj yeem ntsuas los ntawm RM-200 qhov ntsuas lub zog, qhov ceev yog 35rpm, qhov ntsuas kub yog 165oC, thiab tus nqi pub yog 61g;
Tus qauv ntsuas kev ua tau zoo: PVC, 100g; CaCO3, 5 g; TiO2, 4 g; PE, 0.15 g; Stearic acid, 0.2g; Ntsev, 2.5g; Cov hmoov txhuas nyuaj, 1.5g; Cov calcium uas nyuaj, 0.7g; CPE, 9 g; Ua haujlwm pabcuam, 2g.
⒉2 Kev coj ua ntawm kev ua AIDS
PVC ua tus neeg sawv cev ua haujlwm yog ua kom cov molecules sab hauv ntawm qhov sib xyaw thiab kev sib txhuam ntawm qhov sib xyaw thiab cov ntsia hlau, lub tog raj kheej sab nraud, yog li txhawm rau txhim kho qhov tam sim no thiab lub zog ntawm PVC ua cov khoom, PVC nyob rau hauv qhov qis tshaj ua cov hluav taws xob ua haujlwm zoo sib xws, yas hauv kev txiav txim siab kom tau txais kev poob qis tshaj plaws, cov tsos thiab cov yam ntxwv ntawm cov khoom siv tawv PVC. Yog tias qhov ntsuas kub ntawm PVC raug txo qis, qhov ntau dua qhov seem ntawm cov khoom siv khov kho hauv cov khoom lag luam PVC, qis dua HCI qhov sib npaug, thiab qhov zoo dua qhov kev ruaj ntseg lossis huab cua tiv thaiv ntawm cov khoom! Thiab ib qho xwm txheej ntawm cov khoom siv ua hluav taws xob tsawg tsawg yog ua kom muaj qhov siab shear, uas yog, yuav tsum xyuas kom muaj siab tam sim no thiab lub zog. Yog li no, kev ua haujlwm ntawm PVC ua cov kabmob AIDS yuav tsum raug ntsuas los ntawm lub zog thiab qhov tam sim no, thiab cov cuab yeej ntsuas uas tuaj yeem rov qab qhov ntsuas lub zog yog lub zog loj rheometer, yog li cov tuam txhab hauv cov ntsuas zoo ntawm HLN - cov khoom lag luam, tsis nrog viscosity tab sis nrog rheometer kom paub qhov ua tau zoo ntawm kev ua haujlwm ntawm AIDS. Txhua yam khoom siv tau sim nrog rheometer ua ntej tawm hauv lub Hoobkas. Yog tias qhov rheometer nkhaus ua ke, qhov kev ua haujlwm ntawm ob lub pas nrig ntawm cov khoom yog tib yam, thiaj li ua kom muaj kev ruaj khov ntawm cov neeg siv khoom hauv cov txheej txheem ntau lawm thiab siv.


Lub sij hawm tshaj tawm: Lub Ib Hlis-13-2021