ʻO ka polypropylene PP
Ka laulā noi maʻamau:
ʻO ka ʻoihana kaʻa (ʻo ka hoʻohana nui ʻana i nā mea hoʻohui metala PP: nā pale lepo, nā ʻauwai ea, nā mea pā, a pēlā aku), nā mīkini (nā uhi puka holoi kīʻaha, nā ʻauwai ea maloʻo, nā mōlina a me nā uhi o ka mīkini holoi, nā uhi puka pahu hau, a pēlā aku), Iapana Hoʻohana i nā waiwai mea kūʻai (nā lako mauʻu a me nā māla e like me
Nā mīkini ʻoki mauʻu a me nā mea pīpī, a pēlā aku).
Nā kūlana hana hoʻoheheʻe inikini:
Ka hoʻomaloʻo ʻana: Inā mālama pono ʻia, ʻaʻole pono ka hoʻomaloʻo ʻana.
Mahana hoʻoheheʻe: 220 ~ 275 ℃, e makaʻala ʻaʻole e ʻoi aku ma mua o 275 ℃.
Mahana o ka ʻōmole: 40~80℃, 50℃ ka mea i ʻōlelo ʻia. ʻO ke kekelē o ka crystallization e hoʻoholo nui ʻia e ka mahana o ka ʻōmole.
Kaomi hoʻokomo: a i 1800bar.
Ka wikiwiki o ka hoʻokomo ʻana: Ma keʻano laulā, hiki i ka hoʻohana ʻana i ka hoʻokomo wikiwiki ke hōʻemi i ke kaomi kūloko i ka liʻiliʻi loa. Inā he mau hemahema ma ka ʻili o ka huahana, pono e hoʻohana ʻia ka hoʻokomo wikiwiki haʻahaʻa ma kahi mahana kiʻekiʻe.
Nā mea holo a me nā puka: No nā mea holo anu, ʻo ke anawaena maʻamau o ka mea holo he 4 ~ 7mm. Manaʻo ʻia e hoʻohana i kahi puka hoʻokomo poepoe a me ka mea holo. Hiki ke hoʻohana ʻia nā ʻano puka āpau. ʻO ke anawaena maʻamau o ka puka mai 1 a 1.5mm, akā hiki ke hoʻohana ʻia nā puka liʻiliʻi e like me 0.7mm. No nā puka lihi, ʻo ka hohonu o ka puka liʻiliʻi he hapalua o ka mānoanoa o ka paia; ʻo ka laulā o ka puka liʻiliʻi he ʻelua ka mānoanoa o ka paia. Hiki i ka mea PP ke hoʻohana i ka ʻōnaehana mea holo wela.
Nā waiwai kemika a me ke kino:
He mea semi-crystalline ka PP. ʻOi aku ka paʻakikī ma mua o ka PE a ʻoi aku ka kiʻekiʻe o ka hoʻoheheʻe ʻana. ʻOiai he palupalu loa ka homopolymer PP ke kiʻekiʻe ka mahana ma mua o 0°C, he nui nā mea PP kalepa he mau copolymers random me 1 a 4% ethylene a i ʻole clamp copolymers me ka nui o ka ethylene. ʻOi aku ka haʻahaʻa o ka mahana hoʻololi wela o ka mea Copolymer PP (100°C), haʻahaʻa ka transparency, haʻahaʻa ka gloss, haʻahaʻa ka rigidity, akā ʻoi aku ka ikaika o ka hopena. Hoʻonui ka ikaika o PP me ka hoʻonui ʻana o ka nui o ka ethylene. ʻO ka mahana palupalu Vicat o PP he 150°C. Ma muli o ke kiʻekiʻe o ka crystallinity, maikaʻi loa ka paʻakikī o ka ʻili a me ke kū'ē ʻana i ke kahakaha ʻana o kēia mea. ʻAʻohe pilikia o ka PP i ka haki ʻana o ke kaiapuni. ʻO ka maʻamau, hoʻololi ʻia ka PP ma ka hoʻohui ʻana i ka fiber aniani, nā mea hoʻohui metala a i ʻole ka thermoplastic rubber. ʻO ka nui o ke kahe ʻana o ka MFR o PP mai 1 a 40. ʻOi aku ka maikaʻi o ka pale ʻana i ka hopena o nā mea PP me ka MFR haʻahaʻa akā ʻoi aku ka haʻahaʻa o ka ikaika elongation. No nā mea me ka MFR like, ʻoi aku ka kiʻekiʻe o ka ikaika o ke ʻano copolymer ma mua o ke ʻano homopolymer. Ma muli o ke crystallization, kiʻekiʻe loa ka nui o ka emi ʻana o ka PP, ma ke ʻano maʻamau he 1.8 ~ 2.5%. A ʻoi aku ka maikaʻi o ke ʻano like o ka emi ʻana ma mua o ka PE-HD a me nā mea ʻē aʻe. ʻO ka hoʻohui ʻana i 30% o nā mea hoʻohui aniani hiki ke hōʻemi i ka emi ʻana i 0.7%. Loaʻa i nā mea homopolymer a me copolymer PP ka omo ʻana o ka makū, ke kūpaʻa ʻana i ka waikawa a me ka alkali corrosion, a me ke kūpaʻa ʻana i ka solubility. Eia nō naʻe, ʻaʻohe ona kūpaʻa i nā hydrocarbons ʻala (e like me benzene) solvents, chlorinated hydrocarbons (carbon tetrachloride) solvents, a pēlā aku. ʻAʻohe kūpaʻa oxidation o PP i nā mahana kiʻekiʻe e like me PE.

ʻO kā mākounā puna palaki, nā paipu hoʻāʻo plastik, nā mea hoʻoheheʻe ihua me nā huahana ʻē aʻe e pili ana i ke kino o ke kanaka e hoʻohana i nā mea PP. Loaʻa iā mākou nā mea PP papa lapaʻau a me nā mea PP papa meaʻai. No ka mea, ʻaʻohe mea ʻawahia nā mea PP.