Yuav Ua Li Cas Thiaj Li Tiv Thaiv Tau Cov Qib Acetaldehyde (AA) Siab Hauv Cov Khoom Siv PET

Ua rau:

1. Cov teeb meem zoo nrog kev ua tau zoo ntawm cov khoom siv raw

2. Cov nyhuv qhuav tsis zoo

3. Qhov kub ntawm lub thoob cua sov siab dhau lawm (> 285 ℃)

4. Lub zog ntsia hlau rov qab siab dhau

5. Lub sijhawm voj voog ntev dhau lawm

Kev daws teeb meem:

1. Kev tshuaj xyuas qhov zoo ntawm cov khoom siv raw ua ntej lawv nkag mus rau hauv lub tsev rau khoom

2. Xyuas seb lub tshuab ziab khaub ncaws ua haujlwm li cas (piv txwv li qhov dej noo, qhov kub thiab txias/lub sijhawm ziab khaub ncaws)

3. Khaws qhov kub kom qis li qis tau thaum tseem tswj tau qhov zoo

4. Teem lub backpressure rau (400-600psi) yog tias qhov zoo yog tswj hwm

5. Kev ua kom lub sijhawm voj voog zoo tshaj plaws (tsis txhob siv sijhawm ntau dhau los ua kom cov khoom nyoos tsis ua haujlwm)

cov khoom siv hauv lub hau ntswj)

Qhov no yog ib qho kev taw qhia los daws qhov teeb meem. Cov teeb meem uas ntsib hauv txhua hnub cov txheej txheem ntau lawm yuav muaj ntau yam ntxaws.

Piv txwv li, rau kev tshuaj xyuas cov khoom siv raw, peb yuav tsum paub txogcov dej noo, intrinsic viscosity (IV tus nqi), thermal stability, thiab lwm yam ntawm cov rawcov ntaub ntawv;

Yuav ua li cas thiaj ua kom cov txheej txheem ziab zoo dua, peb tsis tu ncua kho qhovlub tshuab ziab khaub ncaws, qhov kub thiab txias ntawm lub tshuab ziab khaub ncaws, qhov chaw cia khoomtus qauv tom qab ziab cov khoom siv raw, thiab lwm yam. Thaum qhov teeb meem tsis tshwm sim, peb yuav tsum tiv thaiv nws, thiab

thaum qhov teeb meemtshwm sim, peb yuav tsum daws nws.