1. No ka manaʻo pale wela,ʻoi aku ka kiʻekiʻe o ka pale wela polypropylene ma mua o ka polyethylene.ʻO ka mahana hoʻoheheʻe polypropylene ma kahi o 40% -50% kiʻekiʻe ma mua o ka polyethylene, ma kahi o 160-170 ℃, no laila hiki ke hoʻomaʻemaʻe ʻia nā huahana ma mua o 100 ℃, me ka ʻole o ka ikaika o waho.ʻAʻole deformed ke kaula PP 150 ℃.Hōʻike ʻia ka polypropylene e ka haʻahaʻa haʻahaʻa, ʻoi aku ka maikaʻi o nā waiwai mechanical i ka polyethylene a me ka rigidity koʻikoʻi.
2. No ka hiʻohiʻona o ka haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa, haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa o ka polypropylene ma mua o ka polyethylene, 0 ℃ ka ikaika hopena he hapalua wale nō o 20 ℃, a hiki i ka polyethylene brittle wela ke piʻi maʻamau -50 ℃ ma lalo;Me ka piʻi ʻana o ka paona molekala pili, hiki i ka liʻiliʻi ke hiki i -140 ℃.No laila,inā pono e hoʻohana ʻia nā huahana ma kahi haʻahaʻa wela, a i ʻolee like me ka hiki ke koho i ka polyethylene e like me ka mea maka.
3. No ka hiʻohiʻona o ka pale ʻana i ka wā kahiko, ʻoi aku ka nāwaliwali o ka pale ʻana o ka polypropylene ma mua o ka polyethylene.He ʻano like ko ka Polypropylene me ka polyethylene, akā, no ka mea he kaulahao ʻaoʻao i haku ʻia me ka methyl, ʻoi aku ka maʻalahi o ka oxidized a hoʻohaʻahaʻa ʻia ma lalo o ka hana a ka ULTRAVIOLET māmā a me ka ikehu wela.ʻO nā huahana polypropylene maʻamau i maʻalahi i ka makahiki i ke ola o kēlā me kēia lā he mau ʻeke i ulana ʻia, kahi maʻalahi e wāwahi i ka wā e ʻike ʻia ai i ka lā no ka manawa lōʻihi. ʻAʻole maikaʻi loa kāna hana, no ka mea, aia kahi helu liʻiliʻi o nā paʻa pālua a me nā paʻa ether i nā molekala polyethylene, ʻaʻole maikaʻi kona kūʻē ʻana i ka wā, ʻo ka lā, ka ua e hoʻomaka ai ka ʻelemakule.
4. No ka hiʻohiʻona o ka hoʻololi ʻana, ʻoiai he ikaika kiʻekiʻe ka polypropylene, ʻaʻole maikaʻi kona maʻalahi, ʻo ia hoʻi ka hopena maikaʻi ʻole mai kahi ʻike loea.

---

Ka manawa hoʻouna: Feb-28-2022