Kusanthula magwiridwe antchito a zipangizo zopangira mapaleti apulasitiki

Ma pallet apulasitiki pakadali pano amapangidwa makamaka ndi HDPE, ndipo mitundu yosiyanasiyana ya HDPE ili ndi makhalidwe osiyanasiyana. Makhalidwe apadera a HDPE ndi kuphatikiza koyenera kwa mitundu inayi yoyambira: kuchulukana, kulemera kwa mamolekyulu, kugawa kwa kulemera kwa mamolekyulu ndi zowonjezera. Ma catalyst osiyanasiyana amagwiritsidwa ntchito popanga ma polima apadera opangidwa mwamakonda. Mitundu iyi imaphatikizidwa kuti ipange mitundu yosiyanasiyana ya HDPE, zomwe zimapangitsa kuti magwiridwe antchito akhale abwino.

Pakupanga ndi kukonza ma pallet apulasitiki, ubwino wa zinthu zazikuluzikuluzi umakhudza wina ndi mnzake. Tikudziwa kuti ethylene ndiye chinthu chachikulu chomwe chimagwiritsidwa ntchito popanga polyethylene, ndipo ma comonomer ena angapo, monga 1-butene, 1-hexene kapena 1-octene, amagwiritsidwanso ntchito nthawi zambiri kukonza mawonekedwe a polima. Pa HDPE, kuchuluka kwa ma monomer ochepa omwe ali pamwambapa nthawi zambiri sikupitirira 1%-2%. Kuwonjezera ma comonomer kumachepetsa pang'ono kuchuluka kwa crystallinity ya polima. Kusinthaku nthawi zambiri kumayesedwa ndi kuchuluka, ndipo kuchulukana kumakhala kogwirizana ndi crystallinity.

Ndipotu, kuchulukana kosiyanasiyana kwa HDPE kudzabweretsa kusiyana kwakukulu pakugwira ntchito kwa mapaleti apulasitiki opangidwa. Kuchulukana kwa polyethylene yapakatikati (MDPE) kumayambira pa 0.926 mpaka 0.940g/CC. Magulu ena nthawi zina amaika MDPE ngati HDPE kapena LLDPE. Ma homopolymers ali ndi kuchulukana kwakukulu, kuuma, kusalowerera bwino komanso malo osungunuka kwambiri.

Kawirikawiri popanga ma pallet apulasitiki, zowonjezera zina nthawi zambiri zimafunika kuti zitsimikizire kuti ntchitoyo ikuyenda bwino. Kugwiritsa ntchito mwapadera kumafuna zowonjezera zapadera, monga kuwonjezera ma antioxidants kuti apewe kuwonongeka kwa polima panthawi yokonza ndikuletsa kukhuthala kwa chinthu chomalizidwa panthawi yogwiritsa ntchito. Zowonjezera zotsutsana ndi static zimagwiritsidwa ntchito m'magawo ambiri opakitsira kuti achepetse kumatirira kwa fumbi ndi dothi m'mabotolo kapena ma paketi.

Kuphatikiza apo, kuti zitsimikizire kuti mapaleti apulasitiki ndi abwino, chisamaliro chachikulu chiyenera kuperekedwa pakulongedza ndi kusungira zinthu zopangira. Nthawi zambiri posunga zinthu za HDPE, zimafunika kukhala kutali ndi malo ozimitsira moto, zotetezedwa, ndipo nyumba yosungiramo zinthu iyenera kusungidwa youma komanso yokonzedwa bwino. N'koletsedwa kusakaniza zonyansa zilizonse, ndipo n'koletsedwa kwambiri kuziika padzuwa ndi mvula. Kuphatikiza apo, panthawi yonyamula, ziyenera kusungidwa m'galimoto yoyera, youma komanso yophimbidwa, ndipo zinthu zakuthwa monga misomali siziyenera kuloledwa.