Ke koho ʻana i kahi mea no kāu huahana aʻe, he mea nui e noʻonoʻo i nā pono a me nā pōʻino o kēlā me kēia koho. Ma kēia pou moʻomanaʻo, e hoʻohālikelike mākou i ʻelua mau mea kaulana: silicone rubber a me polyurethane.
He aha ka silicone rubber a me ka polyurethane?
ʻO ka ʻōpala silikoni a me ka polyurethane ʻelua mau elastomers i hoʻohana nui ʻia. ʻO lāua ʻelua mau mea paʻa i hiki ke hoʻohana ʻia no nā ʻano noi like ʻole, akā aia kekahi mau ʻokoʻa nui ma waena o lākou.
ʻO ka ʻōpala silikoni kahi ʻōpala synthetic i hana ʻia mai ke silikoni, kahi hui o ke silikoni a me ka oxygen, ʻo ia hoʻi ka hiki ke hoʻi i kona ʻano kumu ma hope o ke kikoo ʻana a i ʻole ke kaomi ʻana. He nui nā waiwai pono o ka Silicone rubber, me ka pale ʻana i ka wela kiʻekiʻe, ka haʻahaʻa haʻahaʻa, a me ke kūʻē ʻana i ka wā a me ka ʻelemakule. Hoʻohana ʻia ia i nā ʻano noi like ʻole, me nā sila, gaskets, insulation uila, a me nā ʻāpana automotive.
ʻO ka polyurethane kekahi mea hana ʻē aʻe i hana ʻia mai ka polyurethane, kahi hui o ke kalapona, hydrogen, a me ka oxygen, akā ʻaʻole ia e maʻalahi e like me ka silicone rubber. He nui nā waiwai pono o ka Polyurethane, me ke kūpaʻa abrasion kiʻekiʻe a me ka maʻalahi. Hoʻohana ʻia ia i nā ʻano hana like ʻole e like me nā cushions foam flexible, coatings, adhesives, and sealants.
He aha nā ʻokoʻa nui ma waena o ka silicone rubber a me ka polyurethane?
I ka wā e koho ai i kahi mea no kāu huahana, pono e noʻonoʻo i nā ʻano o kēlā me kēia koho. He ʻoiaʻiʻo loa kēia i ka wā e hoʻoholo ai ma waena o ka silicone rubber a me ka polyurethane. ʻOiai he mau koho maikaʻi loa nā mea ʻelua no nā huahana he nui, loaʻa iā lākou nā hiʻohiʻona like ʻole e hiki ke kūpono i kekahi ma mua o kekahi.
ʻO kahi ʻokoʻa nui ma waena o ka silicone rubber a me ka polyurethane ka durometer, a i ʻole ka paʻakikī. He ʻano paʻakikī ka paʻakikī silikoni, mai ka palupalu a i ka paʻakikī loa. He mea kūpono kēia no nā huahana pono e palupalu a maʻalahi paha, e like me nā gaskets a i ʻole nā sila. ʻOi aku ka paʻakikī o ka polyurethane, akā ʻoi aku ka paʻakikī o kāna mau koho paʻakikī ma mua o nā koho paʻakikī o ka silicone rubber. ʻOi aku ka maikaʻi o ka polyurethane no nā huahana pono e paʻa, e like me nā huila a i ʻole nā casters.
ʻO kahi ʻokoʻa ʻē aʻe ma waena o ka silicone rubber a me ka polyurethane ʻo ke kaʻina hoʻōla. Hoʻōla ʻia nā ʻōpala silicone e nā ʻano like ʻole, me ka wela, ka vulcanization wela o ka lumi, a me ka radiation. ʻOi aku ka palena o ka polyurethane i nā kaʻina hana hoʻōla.
ʻO ka mea hope loa, ʻoi aku ka wela a ʻoi aku ka lōʻihi o ka silicone rubber ma mua o ka polyurethane, akā ʻoi aku ke kumukūʻai. ʻO ka Polyurethane, ma ka ʻaoʻao ʻē aʻe, ʻoi aku ka maʻalahi a me ka haʻahaʻa haʻahaʻa, e ʻoi aku ka māmā o ke kaumaha.
He aha nā pōmaikaʻi o ka silicone rubber?
Loaʻa nā ʻano pono like ʻole o ka silicone rubber i kūpono no ka hoʻohana ʻana i nā ʻoihana like ʻole a me nā noi. ʻO kekahi o nā pōmaikaʻi kaulana loa o ka silicone rubber ʻo kona kūʻē ʻana i nā wela wela. 'O ia ho'i, hiki ke ho'ohana 'ia ma nā wahi wela wela me ka maka'u 'ole i ka poino a me ka ho'oha'aha'a. Hoʻohui ʻia, kūpaʻa nui ka silicone rubber i nā kemika, e lilo ia i mea kūpono no ka hoʻohana ʻana i nā kūlana i hiki ke ʻike ʻia i nā kemika koʻikoʻi.
He aha nā pōmaikaʻi o ka polyurethane?
ʻO ka Polyurethane kahi mea ikaika a paʻa i hiki ke hoʻohana ʻia no nā ʻano hana like ʻole. He kū'ē i ka haehae a me ka abrasion, e lilo ia i mea koho maikaʻi loa no nā mea lole kiʻekiʻe e like me nā'āpana kaʻa, nā mīkini, a me nā wili. He wai ʻole ka Polyurethane a kūpaʻa i ka hoʻouka ʻana i ke kemika, no laila kūpono ia no ka hoʻohana ʻana i waho.
Ka hopena o ke kaiapuni: pehea ka hopena o ke kaiapuni?
ʻOiai ʻo ka polyurethane a me ka silicone rubber nā mea synthetic i hana ʻia ma o ka polymerization, loaʻa iā lākou nā waiwai like ʻole e kūpono ai kēlā me kēia no nā noi kikoʻī. ʻO ka ʻokoʻa nui ma waena o nā mea ʻelua ʻo ka polyurethane kahi thermoset aʻo ka silicone rubber he thermoplastic. ʻO ia ke ʻano o ka hoʻōla ʻana o ka polyurethane, ʻaʻole hiki ke hoʻoheheʻe ʻia a hoʻoponopono hou ʻia e like me ka hiki ʻana o ka silicone rubber. ʻO kekahi ʻokoʻa koʻikoʻi ʻo ia ka polyurethane i ka carbon a ʻaʻole ka silicone rubber.
I ka pili ʻana i ka hopena o ke kaiapuni, loaʻa nā mea ʻelua i nā pono a me nā pōʻino. Ma ka ʻaoʻao ʻē aʻe, ʻaʻohe mea ʻona a i ʻole nā metala koʻikoʻi i hiki ke hoʻolei ʻia me ka ʻole o ka pōʻino i ke kaiapuni. Eia nō naʻe, no ka mea, he mau mea synthetic ia i hana ʻia mai nā huahana i hoʻokumu ʻia i ka petroleum, ʻaʻole hiki ke biodegradable a noho mau i loko o nā pae ʻāina no nā makahiki he nui.
ʻO ka manawa hea ke koho maikaʻi loa o ka silicone rubber?
Nui nā ʻano lāʻau lapaʻau, a loaʻa i kēlā me kēia mea nā waiwai kūʻokoʻa e kūpono ai ia no kekahi mau noi. ʻO ka lāʻau silikoni kekahi o nā ʻano lāʻau lapaʻau nui loa, a he nui kona mau noi. Eia kekahi mau hiʻohiʻona ke koho maikaʻi loa ka lāʻau silicone:
-Ke makemake ʻoe i kahi lāʻau hiki pale i ka wela loa: Hiki ke pale aku i nā wela mai -55°C a i +300°C, i mea kūpono no nā noi kahi e pau ai nā lāʻau ʻē aʻe.
-Ke makemake ʻoe i kahi lāʻau kūʻē i nā kemika: ʻAʻole kūpaʻa ʻo Silicone rubber i nā kemika like ʻole, me nā aila, nā momona, a me nā waikawa. He koho maikaʻi kēia no nā noi kahi e pōʻino ai nā ʻōpala ʻē aʻe.
-Ke makemake ʻoe i kahi lāʻau i loaʻa nā waiwai insulation uila maikaʻi: ʻO ka silicone rubber kahi insulator maikaʻi loa a hiki ke hoʻohana ʻia i nā noi kahi e pono ai e hoʻokaʻawale i nā mea uila mai kekahi i kekahi.
-I ka wā e pono ai ʻoe i kahi lāʻau maʻalahi: ʻoi aku ka maʻalahi o ka ʻili silikoni ma mua o nā ʻano ʻano ʻē aʻe, e kūpono ia no nā noi kahi e koi ʻia ai ka maʻalahi.
I ka manawa hea ka polyurethane ke koho maikaʻi loa?
ʻO ka polyurethane rubber kahi mea maʻalahi i hiki ke hoʻohana ʻia i nā ʻano hana like ʻole. Ua loaʻa maikaʻi ke kūpaʻa abrasion, i mea kūpono no nā huahana e ʻike i ka hoʻohana kaumaha. Loaʻa iā ia ke kūpaʻa kemika maikaʻi, e lilo ia i koho maikaʻi no nā huahana e hoʻopili ʻia me nā mea pōʻino. He insulator maikaʻi nō hoʻi ʻo Polyurethane, no laila kūpono ia no nā huahana pono e pale aku i nā pōʻino uila.
Pehea e koho ai ma waena o ka silicone rubber a me ka polyurethane?
He nīnau maʻamau kēia me ka pane maʻalahi. Ma muli o ka noi a me nā pono kiko'ī e pono ai. Eia kekahi mau alakaʻi maʻamau:
Inā koi ʻia ke kūpaʻa wela kiʻekiʻe, e hele me ka lāʻau silicone. Hiki iā ia ke pale i nā mahana a hiki i 204°C (400°F). Hiki i ka Polyurethane ke hoʻomanawanui i nā mahana a hiki i 93°C (200°F). E like me ka hoʻololi ʻana i ka wela silicone rubber rollers.
Inā pono ka haʻahaʻa haʻahaʻa haʻahaʻa, koho i ka silicone rubber. Hiki ke loli a hiki i -55°C (-67°F). Lilo ka polyurethane i mea paakiki a palupalu ma -40°C (-40°F).
Inā he mea pono ke kū'ē kemika, e koho hou i ka rubber silicone. Paʻa maikaʻi i nā aila, ka momona, ka ʻaila, a me nā wai hydraulic. ʻAʻole maikaʻi ke kūʻē ʻana o ka Polyurethane i nā aila a me nā momona akā maikaʻi me nā aliphatic hydrocarbons e like me ka ʻaila.
ʻOi aku ka Polyurethane i ka silicone rubber i ka pale ʻana i ka abrasion, ka ikaika haehae, a me ka ikaika tensile. Inā he mea nui kēia mau waiwai, e hele me ka polyurethane. E like me: Anti-slip moena no ka wili ʻana i ka paepae, PU vibrating pale.
Panina
Mai ka kūkākūkā ʻana ma luna nei, ua maopopo he nui nā pono o ka silicone rubber ma mua o ka polyurethane. ʻOi aku ka maʻalahi, paʻa, a hiki ke kū i nā mahana kiʻekiʻe ma mua o ka polyurethane. Loaʻa iā ia nā ʻano hoʻohana ākea a hiki ke hoʻopili ʻia e hoʻokō i nā pono kikoʻī. Eia nō naʻe, ʻoi aku ka nui o ke kumukūʻai silicone ma mua o ka polyurethane a ʻaʻole maʻalahi ke loaʻa.
