Cov phooj ywg ib puag ncig EVA kub yaj thaiv yog cov thermoplastic; Lawv ua malleable los yog yas thaum rhuab thiab tawv thaum txias. Lub eco-phooj ywg EVA kub yaj thaiv tsis muaj cov kua dej. Cov ntaub ntawv raw xav tau rau lawv tsim yog resins, polymers, plasticizers, waxes, thiab antioxidants. Thaum cov no nyob rau hauv qhov chaw, eco-phooj ywg EVA kub yaj thaiv nws tus kheej mus rau hauv cov khoom kawg, npaj rau kev xa khoom lossis siv ntau yam lag luam. Polyurethane, metallocene metallocene, EVA ib puag ncig tus phooj ywg EVA kub yaj nplaum thaiv thiab polyethylene yog ib puag ncig tus phooj ywg EVA kub yaj nplaum nplaum.
Eco-phooj ywg EVA kub yaj blocks yog rhuab kom txog thaum lawv tig mus ua kua. Cov kua yog ces coj mus rau qhov chaw pib ntawm cov khoom los ntawm kev txau, dov, los yog extruding ib tug npaum li cas. Tom qab ntawd, ib lub sij hawm luv luv ntawm qhov raug muab rau kom ua tiav cov av noo thiab qhov ntsuas kub zoo hauv kev sib xyaw nrog thawj qhov chaw. Tom qab ntawd muab ob lub ntsej muag ua ke. Qee zaum, ib puag ncig tus phooj ywg EVA kub yaj blocks yuav tsum tau ntim cov chaw ua ke los txhawb kev sib raug zoo thiab kev pom zoo.
Cov khoom ntawm cov khoom kub yaj ntxiv, cov yam ntxwv thiab cov yam ntxwv ntawm eco-phooj ywg EVA kub yaj thaiv yog nws cov xim yaj, tsis ua hauj lwm kub, softening point, viscosity, thermal stability, cycle trajectories, substrate-specific adhesion thiab lwm yam khoom ntawm cov khoom siv. eco-phooj ywg EVA kub yaj thaiv. Viscosity: Viscosity yog ib qho kev ntsuas ntawm lub thickness ntawm cov kua thiab nws tsis kam mus ntws. Cov kua dej uas muaj viscosity siab txav qeeb heev, xws li roj. Cov kua dej viscosity siab dua muaj qhov zoo ntawm qhov yooj yim ntws. Lub viscosity ntawm eco-phooj ywg EVA kub yaj thaiv yog nyob ntawm daim ntawv thov kub thiab thaj tsam ntawm 250 txog 350 degree F (121 txog 176 degree). Tus nqi shear yog ib qho tseem ceeb hauv kev suav cov viscosity. Ntau cov cuab yeej siv los ntsuas qhov viscosity ntawm ib puag ncig tus phooj ywg EVA kub yaj blocks. Cov cuab yeej no suav nrog capillary rheometers thiab dynamic mechanical tsom xam. Chav tsev siv los ntsuas viscosity yog hu ua poise.
Eco-phooj ywg EVA kub yaj thaiv cov xim yaj: Cov nplais yog siv los ntsuas cov xim kub yaj siv cov txheej txheem ntau thiab cov txheej txheem. Peeling: Peeling yog txhais tau tias yog ib qho kev ntsuas ntawm lub zog yuav tsum tau rhuav tshem cov kev sib raug zoo ntawm ob qhov chaw uas muaj kev sib koom ua ke. Chav ntsuas ntawm tev yog phaus ib nti. Ib puag ncig tus phooj ywg EVA kub yaj thaiv tev tuaj yeem ntsuas ntawm qhov sib txawv thiab ntawm qhov chaw sib txawv.
Qhov ntsuas kub tsis ua haujlwm: Qhov ntsuas kub tsis ua haujlwm yog qhov ntsuas kub uas ib puag ncig tus phooj ywg EVA kub yaj thaiv tsis ua haujlwm. Muaj ob hom kev kub tsis ua hauj lwm: tev daim ntawv cog lus tsis ua hauj lwm kub thiab shear bond tsis ua hauj lwm kub. Thaum lub tev daim ntawv cog lus tsis ua hauj lwm kub, qhov saum npoo sib txuas rau ib puag ncig tus phooj ywg EVA kub yaj thaiv ntawm qhov kub kub ua tau yooj yim rau tev tawm. Thaum shear adhesion tsis ua hauj lwm kub, shear raug suav hais tias yog ib qho quab yuam pom ntawm ib qho chaw thaum zawv zawg rau lwm qhov. Thaum lub sij hawm xeem shear, tus qauv yog mounted vertically thiab ib tug hnyav yog txuas. Lub zog ntawm eco-phooj ywg EVA kub yaj thaiv yog cuam tshuam los ntawm lub sijhawm nws siv rau qhov chaw sib cais ntawm ib leeg.
Softening Point: Lub softening point ntawm tej kua nplaum los yog eco-phooj ywg EVA kub yaj thaiv yog xam qhov kub ntawm lub eco-phooj ywg EVA kub yaj thaiv pib ntws. Lub ntsiab lus txiav txim siab ntawm qhov muag muag ntawm ib puag ncig tus phooj ywg EVA kub yaj thaiv yog qhov hloov pauv kub ntawm lub hauv paus polymer thiab siv quav ciab. Feem ntau siv txoj hauv kev rau ib puag ncig tus phooj ywg EVA kub yaj nplaum nplaum yog Universal Method thiab Mettler Method.
Ib puag ncig tus phooj ywg EVA kub yaj thaiv yog tshwj xeeb rau adhesion ntawm substrate: qhov no nyob ntawm ntau yam ntawm cov khoom siv. Lub substrate tiag tiag tuaj yeem siv los txiav txim siab cov khoom xws li kev ruaj khov. Cov yam ntxwv no tuaj yeem kuaj tau ntawm qhov kub sib txawv ntawm ib puag ncig, nce siab thiab qis dua ambient theem. Thermal stability: Kev ruaj ntseg ntawm eco-phooj ywg EVA kub yaj thaiv ntawm qhov kub sib txawv qhia tau hais tias nws tag nrho cov kav ntev. Kev ntsuas thermal stability yog ua los ntawm cov cua kub kub rau nws lub tank kub. Ib puag ncig-phooj ywg EVA kub yaj blocks nrog kev ruaj ntseg zoo tsis decompose ntawm huab cua kub. Lub eco-friendly EVA kub yaj thaiv thermal stability test pab soj ntsuam viscosity hloov thiab charring, crusting, ntug rings, xim hloov, thiab gel tsim.
Cold Crack Formation: Qee cov phooj ywg ib puag ncig EVA kub yaj blocks zoo li tawg ntawm qhov kawg ntawm qhov ntsuas kub. Kev ntsuam xyuas yog ua los txiav txim siab qhov kub ntawm qhov tawg tshwm sim. Qhov kub ntawm cov roj hmab-raws li, eco-phooj ywg EVA kub yaj blocks yog 10 txog 30 degree F (-12 rau -1 degree), hos lwm yam eco-phooj ywg EVA kub yaj blocks muaj qhov kub thiab txias ntawm txog 15 txog 45 degree F (-9 txog 7 degree ).
Lub nplhaib sib txuas: Lub nplhaib sib txuas yog tsuas yog siv rau lub siab-rhiab, ib puag ncig tus phooj ywg EVA kub yaj nplaum nplaum. Cov no yog ib puag ncig tus phooj ywg EVA kub yaj blocks uas tau sib koom ua ke tsuas yog thaum siv siab. Lub voj voog ncig ntsuas qhov aggressiveness ntawm ib puag ncig tus phooj ywg EVA kub yaj thaiv. Chav ntsuas ntsuas yog ounces. Yog hais tias lub zog siab dua yuav tsum rub lub eco-phooj ywg EVA kub yaj thaiv, nws yog suav tias yog nruj dua. Cov khoom siv kho tshuab: Cov khoom siv kho tshuab tseem ceeb heev rau ib puag ncig tus phooj ywg EVA kub yaj blocks. Cov khoom siv kho tshuab no yog qhov taw qhia tawm, uas yog qhov kev ntxhov siab uas tuaj yeem siv rau cov yaj ua ntej EVA kub yaj nplaum nplaum thaiv ib puag ncig yog deformed mus tas li, thiab lub zog tensile, uas yog tus nqi ntawm lub zog yuav tsum tau ua kom tawg cov qauv. .
