He aha ka mea PP? ʻO ka loiloi piha o nā waiwai, nā noi a me nā pono o nā mea PP
Ma ke kahua o nā kemika a me nā mea waiwai, "he aha ka PP" he nīnau maʻamau, ʻo PP ka pōkole o Polypropylene, he polymer thermoplastic i hoʻohana nui ʻia. Ma kēia ʻatikala, e nānā pono mākou i nā waiwai, kaʻina hana, nā wahi noi a me nā pono o nā mea PP e pane i ka nīnau o ka PP.
1. He aha ka PP? Nā manaʻo kumu a me nā waiwai
ʻO ka mea PP, ʻo ia hoʻi ka polypropylene, he thermoplastic i hana ʻia mai ka propylene monomer ma o ka hopena polymerization. Loaʻa iā ia kahi laina laina, e hāʻawi iā ia i ke kaulike o ka rigidity a me ka paʻakikī i kāna mau waiwai ma muli o kāna ʻano kaulahao molecular kū hoʻokahi. ʻO ka polypropylene ka haʻahaʻa haʻahaʻa ma kahi o 0.90 g/cm³ wale nō, e lilo ia i hoʻokahi o nā plastic māmā loa, kahi waiwai i kūpono no nā noi he nui.
ʻO ka Polypropylene ka mea kū'ē i nā kemika, me ke kū'ē maikaʻi loa i ka hapa nui o nā waikawa, nā kumu, nā paʻakai a me nā mea hoʻoheheʻe organik. ʻO kona wahi hoʻoheheʻe kiʻekiʻe (ma kahi o 130-170 ° C) hāʻawi i nā mea PP i ka paʻa maikaʻi ma nā wahi wela kiʻekiʻe a hoʻemi ʻia lākou i ka deformation. No laila, hoʻohana nui ʻia nā mea PP i nā hiʻohiʻona e koi ai i ka wela a me ka pale corrosion.
2. Ke kaʻina hana o nā mea PP
ʻO ka hana ʻana o nā mea PP e hilinaʻi nui i ka ʻenehana catalyst a me nā kaʻina polymerization. ʻO nā ʻano hana polypropylene maʻamau ka polymerization gas-phase, polymerization wai-phase a me ka polymerization intrinsic. Hoʻopili nā ʻano polymerization ʻokoʻa i ka paona molekala, crystallinity a me nā waiwai kino o nā mea PP, a laila e hoʻoholo i kā lākou kahua noi.
Hiki ke kiʻi ʻia nā ʻano like ʻole o ka polypropylene, e like me ka homopolymerised polypropylene (Homo-PP) a me ka copolymerised polypropylene (Copo-PP), ma ka hoʻoponopono ʻana i ke ʻano o ka catalyst a me nā kūlana hopena i ka wā o ke kaʻina hana. ʻO ka polypropylene Homopolymerised he kiʻekiʻe ka rigidity a me ka pale wela, aʻo ka polypropylene copolymerised ka mea maʻamau i ka hoʻohana ʻana i kēlā me kēia lā ma muli o kona ikaika hopena kiʻekiʻe.
3. Nā wahi noi nui no nā mea PP
Hoʻohana ʻia nā mea PP ma kahi ākea o nā ʻoihana ma muli o kā lākou ʻoihana kino a me nā waiwai kemika. I ka nohona o kēlā me kēia lā, hoʻohana ʻia ʻo PP i ka hana ʻana i nā mea hale, nā meaʻai meaʻai, nā paipu a me nā mea pāʻani, a me nā mea ʻē aʻe.
ʻOi loa i ka ʻoihana hoʻopili, ua lilo ʻo PP i mea i makemake ʻia ma muli o kona ʻike maikaʻi a me ke kūpaʻa wela, e like me ka pahu mālama mālama meaʻai maʻamau, microwave oven tableware, a me nā mea ʻē aʻe.
4. ʻO nā pono waiwai PP a me nā kūlana mākeke
Ua makemake nui ʻia nā mea PP ma muli o kona kaumaha māmā, ke kū ʻana o ka wela, ka pale ʻana i ka kemika a me ka hana hoʻoponopono maikaʻi.
Mai ka manaʻo o ka mākeke, me ka manaʻo o ka hoʻomohala hoʻomau a me ka pale ʻana i ke kaiapuni ʻōmaʻomaʻo, e hoʻonui hou ʻia ka noi mākeke no nā mea PP. ʻO ka polypropylene ka recyclable a me ka haʻahaʻa kalapona hoʻokuʻu ʻana i mea nui i nā ʻano noi e puka mai nei, e like me nā kumu ikehu hou a me nā mea pili i ke kaiapuni.
5. Nā hemahema a me nā pilikia o nā mea PP
ʻOiai ʻo kāna mau pōmaikaʻi ʻike, loaʻa iā PP kekahi mau hemahema, e like me ka haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa a me ka maikaʻi ʻole o ka pale ʻana i ke kukui UV. Ma nā noi kūpono, hiki ke hoʻomaikaʻi ʻia kēia mau hemahema ma o ka hoʻohui ʻana i ka hoʻololi, hoʻohui i nā antioxidants a me nā mea hoʻohui UV-resistant. Me ka hoʻomohala ʻana o ka ʻenehana, ke hoʻomau nei ka noiʻi a me ka hoʻomohala ʻana i nā polypropylene bio-based a me nā copolymers kiʻekiʻe, e wehe ana i nā mea hou no ka noi ʻana i nā mea polypropylene.
Ka hopena
He aha ka mea PP? He thermoplastic me nā waiwai maikaʻi loa a me kahi ākea o nā noi. Ma o nā loiloi kikoʻī o kāna mau waiwai, nā kaʻina hana, nā wahi noi a me nā manaʻo o ka mākeke, hiki iā mākou ke ʻike i ke kūlana hiki ʻole ke hoʻololi ʻia o nā mea PP i nā ʻoihana like ʻole. Me ka holomua o ka ʻenehana a me ka pono o ka mālama ʻana i ke kaiapuni, e hoʻomau ka hoʻonui ʻia o ka hoʻohana ʻana o nā mea PP, e lawe mai ana i ka ʻoluʻolu a me nā mea hou i ka ʻoihana hou a me ke ola.
Manaʻo mākou ma o ka ʻike kikoʻī o kēia ʻatikala, ua ʻike ʻoe i ka hohonu o ka mea PP.