Muaj feem cuam tshuam thiab kev tiv thaiv ntawm Zaj duab xis tshuab Transparency ntawm zaj duab xis tshuab tshuab

Cov khoom siv tshuab tshuab feem ntau yog polyolefin, uas yog crystalline polymer heev. Yog li ntawd, ib qho tseem ceeb cuam tshuam rau pob tshab yog cov khoom siv raw. Tau kawg, kev txhim kho qhov zoo ntawm cov tshuab tshuab tshuab kuj yog ib qho kev xav, tab sis cov tshuab tshuab tshuab nws tus kheej tsis tshua muaj kev cuam tshuam rau lub pob tshab ntawm cov tshuab tshuab. Transparency yog hais txog qhov feem pua ​​​​ntawm cov teeb pom kev zoo nrog lub kaum sab xis tawg tsawg dua 0.1 degree uas cuam tshuam rau qhov teeb meem teeb pom kev zoo thaum lub teeb teeb meem dhau los ntawm tus qauv. Qhov siab dua qhov pom ntawm zaj duab xis, qhov pom tseeb ntawm cov duab nyob deb ntawm cov yeeb yaj kiab. Transparency muaj feem xyuam rau cov crystallinity ntawm zaj duab xis thiab qhov chaw tiaj tus, qhov qis dua cov crystallinity, ntau qhov chaw amorphous, qhov chaw tiaj tus, qhov siab dua qhov pom.
Nws tuaj yeem pom tau tias txoj hauv kev zoo tshaj plaws los txhim kho cov pob tshab ntawm zaj duab xis yog siv cov crystallinity qis thiab cov spherulites me me. Qhov no tuaj yeem txo qhov nro ntawm zaj duab xis thiab yog li txo qhov tuab ntawm zaj duab xis. Tsis tas li ntawd, ntxiv qee qhov nyiaj ntawm plasticizer rau zaj duab xis kuj tuaj yeem txhim kho qhov pom ntawm zaj duab xis. Cov tshuab tshuab tshuab siab tshaj plaws tsuas tuaj yeem txhim kho pob tshab rau qee yam.
Nyob rau hauv kev saib ntawm cov saum toj no, nyob rau hauv cov ntaub ntawv ntawm kuj zoo raw cov ntaub ntawv, qhov teeb meem ntawm zaj duab xis transparency tshwm sim dua, yuav ua li cas daws nws? Ua ntej tshaj plaws, nws yog ib qho tsim nyog yuav tau xav txog tias qhov kub ntawm lub tshuab tshuab extrusion yog tsawg heev, thiab cov yaj tsis yog plasticized zoo. Qhov teeb meem no tuaj yeem daws tau los ntawm kev nce qhov kub thiab txias. Tsis tas li ntawd, cov cua txias tsis zoo tom qab tshuab zaj duab xis kuj tseem yuav cuam tshuam rau qhov pom, thiab cov txheej txheem sib xws yog ua kom cov cua txias ntim.
Rov qab mus rau cov khoom siv raw, cov dej noo ntau dua ntawm cov pob resin tseem yuav cuam tshuam rau lub pob tshab ntawm lub tshuab ziab khaub ncaws, qhov teeb meem no yooj yim heev, tsuas yog cov pob resin yuav tsum tau qhuav tag. Txawm li cas los xij, yog tias nws yog iav fiber ntau, nws xav tau kev kho tshwj xeeb, xws li txheej pob tshab tiv thaiv zaj duab xis rau saum npoo ntawm pob resin, kom nws tuaj yeem zam kom tsis txhob txo cov pob tshab ntawm cov pob zeb vim yog cov dej noo ntau dhau.
Tsis tas li ntawd, muaj ntau txoj hauv kev los txhim kho cov khoom siv kho qhov muag ntawm cov yeeb yaj kiab, xws li ntxiv me me ntawm LDPE rau linear low-density polyethylene los yog metallocene polyethylene, thiab kho cov interlayer ceev hauv peb txheej txheej zaj duab xis.
Hauv cov ntsiab lus, cov txheej txheem ua haujlwm cuam tshuam rau zaj duab xis yog tsis muaj dab tsi ntau tshaj qhov txias, cov khoom siv raw polyethylene resin tsis, additives, kub, qauv tsim. Raws li kev txheeb xyuas tshwj xeeb ntawm cov teeb meem sib txawv, qhov teeb meem tuaj yeem daws tau yooj yim.