Kodi pali kusiyana kotani pakati pa matumba a chakudya ndi matumba wamba apulasitiki?

1. Polyethylene: Chigawo chachikulu ndi polyethylene resin, ndi mafuta ochepa, okalamba ndi zina zowonjezera.Polyethylene ndi yopanda fungo, yopanda poizoni, yolimba yamkaka yoyera.HDPE imagawidwa mu polyethylene yapamwamba kwambiri, polyethylene yotsika kwambiri komanso polyethylene yotsika kwambiri malinga ndi morphology, zomwe zili ndi unyolo wa polima.
Pulasitiki ya polyethylene nthawi zambiri imatchedwa HDPE pansi.Poyerekeza ndi polyethylene yotsika kwambiri ndi LLDPE, mapulasitiki a polyethylene ali ndi kukana kutentha kwambiri, kukana abrasion, hydrophilicity ya nthunzi yamadzi komanso kukana kupsinjika kwachilengedwe m'malo achilengedwe.Kuphatikiza apo, pulasitiki ya polyethylene imakhala ndi mphamvu zabwino kwambiri za dielectric, kukana kwamphamvu komanso kukana kuzizira.Ndizoyenera kuzinthu zopanda kanthu (monga mabotolo agalasi, mabotolo otsukira), jekeseni, jekeseni ndi mafakitale ena.
Linear low-density polyethylene (LINEARLOWDENSYPOYETHYLENE, LLDPE) ndi polima wopangidwa ndi polymerization wa ethylene ndi pang'ono olefins patsogolo pamaso pa chothandizira.Maonekedwe ake ndi ofanana ndi a polyethylene otsika kwambiri, koma gloss yake ndi yabwino, yokhala ndi kutentha kochepa komanso kutsika kwa Modulus, kukana kupindika, kukana kugwedezeka kwapansi, kutsika kwa kutentha kwa mphamvu yopondereza ndi zina zabwino.
Amagwiritsidwa ntchito kwambiri popanga jekeseni, extrusion, kuwombera ndi njira zina zopangira mafilimu, zofunikira za tsiku ndi tsiku, mipope, mawaya ndi zingwe.
2. Polypropylene: Chigawo chachikulu ndi polypropylene resin, yomwe imakhala ndi gloss yapamwamba ndi transmittance kuwala.Ntchito yosindikiza kutentha ndi yoyipa kuposa PE, koma yabwino kuposa zida zina zapulasitiki.
1. Zolepheretsa ntchito zimakhala bwino kuposa PE, mphamvu zake, kuuma kwake ndi kulimba kwake kuli bwino kuposa PE;
2. Thanzi ndi chitetezo ndizokwera kuposa masewera
3. Imakhala ndi kutentha kwabwino kwambiri ndipo ingagwiritsidwe ntchito kwa nthawi yaitali pa kutentha kwa madigiri 100 Celsius, koma kuzizira kwake kumapangitsa kuti HDPE igwire bwino ndipo imakhala yovuta pa -17 digiri Celsius.
Chikwama cholongedza chopangidwa ndi filimu ya pulasitiki ndipamwamba kuposa platinamu, zopangira zowonekera bwino komanso zinthu zosagwetsa misozi pokhudzana ndi kukana kuvala komanso kukana chinyezi, koma zosindikizira zosindikizira ndizosauka ndipo mtengo wake ndi wotsika.Itha kugwiritsidwa ntchito kuyikanso ma lollipops ndi zokhwasula-khwasula.Zitha kupangidwa kukhala chakudya kutentha shrinkable filimu ma CD thumba kutentha shrinkable filimu, monga chakudya ndi chakudya matumba pulasitiki ma CD ndi matumba ena gulu ma CD.
3. Polystyrene: Polima yokhala ndi styrene monomer monga gawo lalikulu.Nkhaniyi ndi yowonekera komanso yonyezimira.
1. Kukana kwa chinyezi ndi koipa kuposa PE, kukhazikika kwa mankhwala kumakhala kofala, kuuma kumakhala kwakukulu, koma brittleness ndi yaikulu.
2. Good otsika kutentha kukana, koma osauka kutentha kukana, sangathe upambana 60≤80℃.
3. Chitetezo chabwino.