ʻO ka mea mua, e ʻike kākou i kēia mau mea ʻelua:

He aha ka mea PC?

I ka ʻoihana, kapa ʻia ka polycarbonate (Polycarbonate) PC. ʻO ka ʻoiaʻiʻo, ʻo ka mea PC kekahi o kā mākou plastics industrialized. ʻO ke kumu i hoʻohana nui ʻia ai i ka hana ʻana ua hoʻoholo piha ʻia e kona mau hiʻohiʻona. Loaʻa i ka PC nā pono kūʻokoʻa o ke ahi, non-toxic a me ka waihoʻoluʻu. ʻO ke kī ʻo ia ka mana hoʻonui nui, ka wela kiʻekiʻe a me ke kūpaʻa haʻahaʻa haʻahaʻa, a me ka extensibility maikaʻi. ʻO ke kī ʻo ia ka maikaʻi o ka huahana i hoʻopau ʻia. Ua lilo kēia i mea koho no nā mea lako he nui e koho i ka PC ma ke ʻano he kumu. He kumu nui.

He aha ka mea PP?

ʻO PP ka pōkole o polypropylene (Polypropylene), a ʻo ia hoʻi ka mea a mākou e kapa pinepine ai i ka plastic Fold-fold, ʻo ia hoʻi kekahi ʻano o ka plastic production. ʻO PP kahi huahana plastic synthetic, akā loaʻa iā ia nā pono ponoʻī a me nā hemahema. Nui nā ʻōmole pēpē e hana ʻia me ka mea PP no ka mea he kūʻē ia i nā wela kiʻekiʻe a ua maikaʻi loa ma luna o 100 degere Celsius, no laila kūpono ia no nā pono o ka hoʻolapalapa pinepine ʻana i ka wai disinfection o nā hue pēpē. He maikaʻi ke kūpaʻa o PP.

No laila no ke aha i loko o ka ʻoihana lako, hoʻololi mālie ʻia nā mea PC e nā mea PP? ʻO nā kumu penei:

Kumu kumu kūʻai

ʻOi aku ka kiʻekiʻe o ke kumu kūʻai o ka resin PC ma mua o ka PP. ʻOi aku ka maikaʻi o nā mea maka o PC ma mua o 20,000 a ton, a ʻo ke kumu kūʻai o PP he 10,000. ʻO PP kekahi o nā papahana i hoʻohana nui ʻia.

Manaʻo lole

Ma ke ʻano o ka lawe māmā ʻana o nā plastics, lanakila ka resin PC. ʻO PC kekahi o nā plastic transparent ʻekolu me ka transmittance māmā maikaʻi loa. ʻO nā lako i hoʻopau ʻia he aniani a kala ʻole. He ʻilihune loa ka permeability o ka pp, a ʻo ka PP maʻamau ka manaʻo hazy o ka noe, kahi e hoʻonui ai i ke ʻano o ka mea a hoʻolilo i ke kala i ʻoi aku ka matte, e ʻoi aku ka holomua. ʻO ke koho ʻana i nā kala he nui i lilo i mea punahele nona. Nā kumu hoʻokipa. Nā koho waiwai, ʻaʻole like me ka mea PC.

Nā hiʻohiʻona waiwai

He ʻokoʻa ka paʻakikī a me ka paʻakikī o kēia mau plastic. He paʻakikī maikaʻi loa ka PC, he haʻahaʻa haʻahaʻa loa ka paʻakikī o PP i ka mahana o ka lumi, a hiki ke maʻalahi ke hoʻololi ʻia a hoʻopaʻa ʻia e ka ikaika o waho. Eia nō naʻe, he paʻakikī maikaʻi loa ʻo PP, i kapa ʻia ʻo Baizhe glue, a hoʻohana nui ʻia i nā lako. ʻOi aku ka ikaika o kona paʻakikī a ʻoi aku ka maikaʻi o ka lawe ʻana i ka ukana.

Hiki ke hana

He maikaʻi loa ka wai o ka injection PP a ua maʻalahi ka hana ʻana, ʻoiai ʻoi aku ka maikaʻi o ka wai o PC a paʻakikī ke hoʻoneʻe i ke kāpili. Eia kekahi, maʻalahi ka PC e hoʻoheheʻe a hoʻololi i ka waihoʻoluʻu i ke kiʻekiʻe kiʻekiʻe i ka hoʻoheheʻe ʻia ʻana, a ʻo ka hoʻoheheʻe ʻana e koi i kahi wili PC maʻamau. No laila, ʻoi aku ka kiʻekiʻe o ke kumukūʻai hana o nā huahana PC. I ka manawa like, i ka wā i hana ʻia ai nā huahana injection PC, ma muli o ko lākou mau hiʻohiʻona a maʻalahi ke ʻike i nā ʻōpala a me nā haumia i loko, haʻahaʻa loa ka hua. Inā he mākeke kiʻekiʻe, paʻakikī loa ka mālama ʻana i ka maikaʻi o nā huahana PC, kahi e hoʻonui nui ai i nā kumukūʻai hana.

Mea palekana

Hiki i nā huahana PC ke hoʻoheheʻe i ka bisphenol A, he mea pōʻino i ke olakino kanaka. ʻAʻole hiki i ka PC wela kiʻekiʻe ke hana i ka bisphenol A, akā ʻo ka bisphenol A ka mea maka no ka hana ʻana i nā plastik PC. Ma hope o ka synthesis o bisphenol A, hana ʻia ka PC. Ma hope o ka synthesis kemika, ʻaʻole i laila ka bisphenol A mua. He kaʻina wale nō kēia kaʻina hana synthesis, a aia nā ʻokoʻa i ke kaʻina hana, he paʻakikī ke 100% piha ka hopena, a aia paha ke koena bisphenol A (hiki paha). Ke hālāwai ʻo PC i ka wela kiʻekiʻe, e hoʻoheheʻe ʻia ka bisphenol A mai loko mai o ka plastic. No laila, inā he koena bisphenol A i loko o ka mea, e mau ana ka ua wela a me ka ua anu, a lohi loa ka ua anu.

ʻO nā mea āpau, ʻokoʻa ka hana o PC a me PP, a ʻaʻole hiki ke hoʻoholo wale i ka mea maikaʻi a ʻo wai ka hewa. Pono nō e koho i ka huahana maikaʻi loa no ka laulā o ka hoʻohana. A ʻoi aku ka nui o ka hoʻohana ʻana o PP i ka māla lako, ʻo ia ke kumu e hoʻololi mālie nei nā lako PP i nā lako PC.

E ʻoluʻolu e nīnau mai iaʻu ma oAndrew@sinotxj.com