Nā Polymers: Nā Mea o ka Wā E Hiki Mai Ana
ʻO nā polymers kekahi o nā mea hana maʻalahi a kipi loa i ka ʻepekema mea. Mai nā plastics a mākou e hoʻohana ai i kēlā me kēia lā a hiki i nā olonā e hana ai i kā mākou lole, he kuleana koʻikoʻi nā polymers i ke ola hou. E kūkākūkā kēia ʻatikala i ke ʻano o nā polymers, ko lākou mau waiwai kūikawā, ko lākou ʻano, a me kā lākou hoʻohana ākea ma nā ʻāpana ʻoihana like ʻole.
He aha ka Polymer?
I ka ʻōlelo maʻalahi, he molekala nui ka polymer i hana ʻia me nā ʻāpana hana hou he nui i kapa ʻia he monomers. ʻO ke kaʻina hana e hoʻopili ai kēia mau monomers e hana i kahi polymer ua kapa ʻia ʻo polymerization. Hiki i nā Monomers ke lilo i mau molekala maʻalahi, e like me ka ethylene, kahi e hana ai i ka polyethylene, kekahi o nā polymers maʻamau. ʻO ke ʻano linear a branched paha o kēia mau polymers e hāʻawi iā lākou i nā waiwai kino a me nā kemika kū hoʻokahi, e kūpono ai lākou no nā ʻano hana like ʻole.
Nā Waiwai o nā Polymers
Ua kaulana nā polymers no kekahi mau waiwai kūikawā e hoʻolilo ai iā lākou i mea waiwai nui i nā ʻano hana like ʻole:
1. Māmā a Ikaika: Loaʻa i nā polymers kahi lakio ikaika-a-kaumaha kiʻekiʻe, ʻo ia hoʻi he ikaika lākou akā he māmā. ʻO kēia ka mea e lilo ai lākou i koho kūpono no nā noi e pono ai nā mea ikaika akā māmā, e like me nā ʻoihana kaʻa a me nā aerospace.
2. Pale wai: He hydrophobic ka nui o nā polymers, ʻo ia hoʻi ke kipaku nei lākou i ka wai. ʻO kēia waiwai e kūpono ai lākou no nā noi ma nā wahi pulu a wai paha, e like me nā paipu a me nā ipu mālama.
3. Hoʻopaʻa Uila a me ka Wera: Hoʻohana pinepine ʻia nā polymers ma ke ʻano he mea hoʻopaʻa ma muli o ko lākou mau waiwai ʻaʻole alakaʻi. Hoʻohana ʻia lākou i nā uhi uwea uila a me nā mea hoʻopaʻa wela.
4. Ka Malu a me ka Elasticity: Ua ʻike ʻia nā polymers e like me ka rubber kūlohelohe a me ka silicone no ko lākou elasticity, kahi e hiki ai iā lākou ke hoʻi i ko lākou ʻano mua ma hope o ke kīkoʻo ʻia a i ʻole ke kaomi ʻia.
5. Ke Kū'ē Kemika: He nui nā polymers i kū'ē i nā kemika, e kūpono ai lākou no ka mālama ʻana i nā kemika a me nā noi lapaʻau.
Nā ʻano Polymers
Hiki ke hoʻokaʻawale ʻia nā polymers ma muli o ko lākou kumu, ʻano, a me nā waiwai kino:
1. Ma muli o ke kumu:
– Nā Polymers Kūlohelohe: Me nā protein, cellulose, a me ka laholio kūlohelohe.
– Nā Polymers Hana ʻia: E like me nā plastics (polyethylene, polypropylene), synthetic rubber, a me ka nylon.
2. Ma muli o ke ʻano:
– Nā Polymers Linear: Loaʻa kahi ʻano kaulahao pololei, e like me ka polyethylene.
– Nā Polymers Lālā: Loaʻa iā ia ke kaulahao nui me nā lālā ʻaoʻao, e like me amylopectin.
– Nā Polymers Pūnaewele: Nā polymers i hoʻopili ʻia e hana i kahi ʻano ʻekolu-dimensional, e like me ka epoxy resin.
3. Ma muli o kona mau waiwai wela:
– Thermoplastic: Nā polymers e palupalu i ka wā e hoʻomehana ʻia ai a paʻakikī i ka wā e hoʻomaʻalili ʻia me ka ʻole o nā loli kemika, e ʻae ai i ka hana hou ʻana maʻalahi.
– Thermoset: Ke hoʻomehana ʻia a hoʻoponopono ʻia, ʻaʻole hiki ke hoʻoheheʻe hou ʻia kēia polymer.
Nā noi Polymer
Ua hoʻololi nā polymers i nā ʻoihana like ʻole a ua lilo i mea koho i nā noi he nui, e like me:
1. ʻOihana Kaʻa: Hoʻohana ʻia nā polymers i nā ʻāpana kaʻa like ʻole ma muli o ko lākou māmā a me nā waiwai paʻa. ʻO kēia mau mea e komo pū me nā dashboards, nā panela puka, a me nā bumpers. Hiki i ka hoʻohana ʻana i nā polymers ke hoʻomaikaʻi i ka pono o ka wahie o kahi kaʻa ma ka hoʻemi ʻana i kona kaumaha holoʻokoʻa.
2. Mālama ola kino: Ma ke ao lapaʻau, hoʻohana ʻia nā polymers e hana i nā mea lapaʻau hoʻolei ʻia e like me nā mīkina lima, nā syringes, a me nā ʻeke koko. Eia kekahi, hoʻohana ʻia nā polymers biocompatible i nā implants a me nā prostheses.
3. Meaʻai a me ka Pūʻolo: I ka ʻoihana meaʻai, hoʻohana ʻia nā polymers no ka pūʻolo e pale i nā huahana mai ka haumia a hoʻolōʻihi i ke ola papa. Hoʻohana nui ʻia nā kiʻiʻoniʻoni Polymer, e like me ka polyethylene a me ka polypropylene, ma ke ʻano he pūʻolo.
4. Nā lole a me nā lole: ʻO nā olonā synthetic e like me ka polyester, nylon, a me ka acrylic he mau polymers i hoʻohana pinepine ʻia i ka ʻoihana lole ma muli o ko lākou ikaika a me ka hiki ke omo i ke kala.
5. Nā mea uila: Hoʻohana ʻia nā polymers conductive i nā mea uila e like me nā touchscreens a me nā diode light-emitting (LED). Hoʻohana ʻia nā waiwai insulating o kekahi mau polymers i nā ʻāpana uila e like me ka insulation wire.
6. Kūkulu ʻana: Hoʻohana ʻia nā polymers i nā paipu, nā mea hoʻohui, a me nā mea uhi ma muli o ko lākou kūpaʻa i ka wai a me nā kemika. Hoʻohana ʻia ʻo Vinyl a me PVC i nā ʻano hana kūkulu like ʻole e like me ka papahele, nā puka makani, a me nā paia.
ʻO ka wā e hiki mai ana o nā Polymers
Me ka holomua o ka ʻenehana a me ka hoʻonui ʻana i ka ʻike kaiapuni, ke kālele nei ka hoʻomohala ʻana i ka polymer i ka hoʻomau. Ke lilo nei nā hana hou i nā polymers biodegradable a me recyclable i mea nui. Ke hana ʻia nei ka noiʻi e hoʻomohala i nā polymers mai nā kumu mea kanu i hiki ke biodegrade, e hōʻemi ana i ka hopena o ke kaiapuni.
Eia kekahi, ke hoʻomohala ʻia nei nā polymers akamai e hiki ke pane i nā mea hoʻonāukiuki o waho e like me ka mahana, ka mālamalama, a i ʻole ka makū. Hāʻawi kēia i nā noi kūpono i ka lawe ʻana i nā lāʻau lapaʻau, nā mea ʻike, a me nā mea mālama ikehu.
Ka hopena
ʻO nā polymers kekahi o nā mea i ʻike nui ʻia i nā mea hana a me nā ʻenehana hou. ʻO ko lākou ʻano like ʻole a me nā waiwai kū hoʻokahi i hoʻolilo iā lākou i mau ʻāpana koʻikoʻi i nā ʻoihana he nui. Me ka hoʻomau ʻana o ka noiʻi a me ka hoʻomohala ʻana, ʻaʻole e hoʻomau wale nā polymers i ka hoʻokō ʻana i nā pono o ke kaiāulu o kēia wā akā e hoʻomākaukau pū i ke ala no ka hana hou hoʻomau i ka wā e hiki mai ana. ʻAʻole wale nā polymers e hoʻololi i ke ʻano o ko mākou noho ʻana, akā ke pāʻani nei lākou i kahi kuleana koʻikoʻi i ke kūkulu ʻana i kahi wā e hiki mai ana e hoʻomau a kūpono hoʻi.
