Cov yas pallets tam sim no feem ntau yog ua los ntawm HDPE, thiab cov qib sib txawv ntawm HDPE muaj cov khoom sib txawv. Cov yam ntxwv tshwj xeeb ntawm HDPE yog kev sib xyaw ua ke ntawm plaub qhov sib txawv: qhov ntom ntom, qhov hnyav molecular, qhov hnyav molecular faib thiab cov khoom ntxiv. Cov catalysts sib txawv yog siv los tsim kho tshwj xeeb kev ua tau zoo polymers. Cov kev hloov pauv no tau ua ke los tsim cov qib HDPE rau ntau lub hom phiaj, ua tiav qhov sib npaug hauv kev ua haujlwm.
Hauv kev tsim thiab ua cov yas pallets tiag tiag, qhov zoo ntawm cov kev hloov pauv tseem ceeb no muaj kev cuam tshuam rau ib leeg. Peb paub tias ethylene yog cov khoom siv tseem ceeb rau polyethylene, thiab ob peb lwm cov comonomers, xws li 1-butene, 1-hexene los yog 1-octene, kuj tau siv los txhim kho cov khoom polymer. Rau HDPE, cov ntsiab lus ntawm ob peb monomers saum toj no feem ntau tsis tshaj 1% -2%. Qhov sib ntxiv ntawm comonomers me ntsis txo cov crystallinity ntawm cov polymer. Qhov kev hloov no feem ntau ntsuas los ntawm qhov ceev, thiab qhov ceev yog linearly cuam tshuam nrog crystallinity.
Qhov tseeb, qhov sib txawv ntawm HDPE yuav tsim qhov sib txawv tseem ceeb hauv kev ua haujlwm ntawm cov yas pallets ua. Qhov ntom ntawm nruab nrab-density polyethylene (MDPE) yog li ntawm 0.926 txog 0.940g / CC. Lwm qhov kev faib tawm qee zaum faib MDPE li HDPE lossis LLDPE. Homopolymers muaj qhov ceev tshaj plaws, nruj, zoo impermeability thiab siab tshaj plaws melting point.
Feem ntau nyob rau hauv tus txheej txheem ntawm kev ua yas pallets, ib co additives feem ntau yuav tsum tau los xyuas kom meej qhov yuav tsum tau kev ua tau zoo. Cov kev siv tshwj xeeb yuav tsum muaj cov tshuaj ntxiv tshwj xeeb, xws li ntxiv cov tshuaj antioxidants los tiv thaiv polymer degradation thaum ua thiab tiv thaiv oxidation ntawm cov khoom tiav thaum siv. Antistatic additives yog siv nyob rau hauv ntau qib ntim los txo cov adhesion ntawm plua plav thiab av rau lub raj mis los yog ntim.
Tsis tas li ntawd, txhawm rau kom ntseeg tau tias cov yas pallets zoo, yuav tsum tau them nyiaj ntau dua rau kev ntim khoom thiab khaws cov ntaub ntawv raw. Feem ntau thaum khaws cov ntaub ntawv HDPE, nws yuav tsum nyob deb ntawm qhov hluav taws kub, rwb thaiv tsev, thiab lub warehouse yuav tsum qhuav thiab huv si. Nws yog nruj me ntsis txwv tsis pub sib tov tej impurities, thiab nws yog nruj me ntsis txwv tsis pub kom raug rau lub hnub thiab los nag. Tsis tas li ntawd, thaum lub sij hawm kev thauj mus los, nws yuav tsum tau muab cia rau hauv ib qho chaw huv, qhuav thiab npog lub tsheb thauj mus los lossis lub tsev, thiab tsis pub cov khoom ntse xws li cov rau tes.
Lub sij hawm xa tuaj: Plaub Hlis-04-2025
