Dab tsi yog vim li cas rau qhov tsis txaus Elasticity ntawm Stretch zaj duab xis?

Thaum peb siv stretch film, elasticity kuj yog ib feem tseem ceeb. Lub elasticity ntawm stretch zaj duab xis kuj muaj qee yam cuam tshuam rau nws qhov zoo. Elasticity yog dab tsi? Qhov sib piv ntawm qhov loj ntawm qhov rov qab mus rau qhov loj me tom qab ib lub sijhawm ntawm lub sijhawm, uas yog, qhov rov qab, qhov no yog qhov elasticity ntawm cov zaj duab xis stretch, peb yuav tsum muaj cov kev xav tau zoo ntawm elasticity thaum ntim cov khoom, yog li cov elasticity yog. kuj yog ib qho ntawm cov ntsuas kev txiav txim!

Tab sis thaum peb yuav stretch films, peb pom tias ib co stretch films muaj zoo elasticity thiab ib co yog me ntsis elastic. Yog li dab tsi yog vim li cas rau lawv elasticity?

1. cuam tshuam los ntawm cov khoom siv raw: kev xaiv cov khoom siv raw kuj tseem ceeb heev. Cov khoom zoo raw khoom ua cov khoom zoo PVC stretch zaj duab xis. Cov yeeb yaj kiab tshiab no (cov ntawv nyias thiab mos pob tshab) muaj qhov zoo ntawm kev tiv thaiv ib puag ncig, viscosity, elasticity, thiab lwm yam (Ceeb toom: nws tuaj yeem cuam tshuam ib leeg qhov zoo).

2. Muaj kev cuam tshuam los ntawm kev nyab xeeb: Kev hloov pauv huab cua yog qhov tseem ceeb tshaj plaws uas cuam tshuam rau viscosity thiab elasticity ntawm PVC stretch zaj duab xis. EVA yog thawj zaug siv los ua cov ntaub nplaum rau tus kheej rau cov yeeb yaj kiab, tab sis tus nqi siab thiab saj tau zoo, thiab PI tau siv tom qab.

3. VLDPE yog cov khoom siv nplaum rau tus kheej, thiab LLDPE yog lub ntsiab substrate, suav nrog C4, C6, C8 thiab metallocene polyethylene (MPE). Lub viscosity yuav txo nyob rau hauv lub caij ntuj sov ntau lawm. Vim yog sab nraud ntawm qhov kub thiab txias nyob rau lub caij ntuj sov, lub viscosity yuav tsum tsis txhob loj dhau rau lub caij ntuj sov ntau lawm. Cov khoom ntim tau zoo viscosity thiab elasticity; Nyob rau hauv lub caij ntuj no ntau lawm, vim huab cua txias, viscosity thiab elasticity tsis zoo heev. Lub sijhawm no, cov khoom ntxiv xws li seasonings yuav tsum tau ntxiv rau lub sijhawm los tswj nws cov elasticity thiab qee zaum tswj nws qhov nro thiab elasticity.