Nūhou

ʻO ka papa i uhi ʻia ka waihoʻoluʻu he mea kūkulu hale ʻōmaʻomaʻo a pili kaiapuni.Pehea e koho pono ai, hoʻohana pono, a hoʻomaikaʻi i kona ola lawelawe ʻo ia ka pilikia nui loa no nā mea nona a me nā mea hana ʻenekinia.ʻO Baosteel, ma ke ʻano he mea hana kila piha, loaʻa ka ʻike waiwai i ka hana ʻana a me ka hoʻohana ʻana i nā papa kala i uhi ʻia.Hāʻawi ka module "Scientific Material Selection" i kahi ʻōlelo aʻoaʻo pōkole a me ka hoʻomaka ʻana no nā mea hoʻohana i ke koho ʻana a me ka hoʻohana ʻana i nā papa i uhi ʻia.
ʻO ke koho pololei ʻana i nā panela i uhi ʻia i ka waihoʻoluʻu e noʻonoʻo i ke ʻano kūlohelohe, ka hoʻohana ʻana, ke ola hoʻolālā, a me nā hiʻohiʻona o ka hale, i mea e koho ai i ke ʻano kila, kikoʻī, ka uhi ʻana, a me ka uhi ʻana e kūlike me ia.Noʻonoʻo nā mea hoʻolālā, nā mea hana ʻenekinia, a me nā mea hana i ka hana palekana (ke kū'ē i ka hopena, ke kū'ē seismic, ke kū'ē ahi, ke kū'ēʻana o ka makani, ka hau hau), ka hana hale (ka wai, ke kani kani, ka insulation), ka lōʻihi (ke kū'ē i ka pollution, ka lōʻihi, ka mālamaʻana i nā hiʻohiʻona) , a me ka hoʻokele waiwai (ke kumu kūʻai haʻahaʻa, ka hana maʻalahi, ka mālama maʻalahi, a me ke pani maʻalahi) o nā hale.No nā mea hoʻolako i nā pā kila i uhi ʻia i ka waihoʻoluʻu, pono e hoʻololi ʻia kēia mau waiwai i mau waiwai pā kila i uhi ʻia e nā wili kila a hōʻoia ʻia.ʻO nā koi o ka hana o nā papa kila i uhi ʻia i ka waihoʻoluʻu e komo pū me nā ʻano mechanical o ka mea (ikaika tensile, ikaika hua, elongation), hana uhi (ʻano uhi, mānoanoa o ka uhi ʻana, a me ka hoʻopili ʻana i ka uhi), a me ka hana uhi (ʻano uhi, kala, ʻālohilohi. , lōʻihi, kaʻina hana, etc.).Ma waena o lākou, pili ka makani, ka hopena, ka hau, ka ōlaʻi, a me nā mea ʻē aʻe i nā waiwai mechanical o nā mea, a ʻoiaʻiʻo, pili pū lākou i ka nalu, mānoanoa, span, a me ka spacing o nā papa kila profiled kala. .Inā koho ʻia a hui pū ʻia nā papa kila i hoʻopaʻa ʻia me ka hoʻolālā ʻana o ka pā kila, ʻaʻole hiki ke hoʻokō wale i ke kumu palekana o nā hale akā e hōʻemi hoʻi i nā kumukūʻai ʻenehana.Hoʻoholo nui ʻia ka lōʻihi, ka hana ʻana, a me ka mālama ʻana i nā hiʻohiʻona e ka lōʻihi o nā uhi a me nā uhi.

ʻOkoʻa uhi

I kēia manawa, ʻo nā ʻano o ka uhi i hoʻohana ʻia no nā pā kila i uhi ʻia me ka polyester coating (PE), fluorocarbon coating (PVDF), silicon modified coating (SMP), high weather resistance coating (HDP), acrylic acid coating, polyurethane coating (PU) , ka uhi ʻana o ka sol plastik (PVC), etc.

Polyester maʻamau (PE, Polyester)
Hiki ke hoʻopili maikaʻi ʻia ka uhi ʻana o ka PE i nā mea, a ua maʻalahi nā papa kila i hoʻopaʻa ʻia i ke kala, ʻoi aku ka maikaʻi, a loaʻa ka nui o nā huahana.Nui nā koho no ke kala a me ka nani.Ma lalo o ka hōʻike pololei ʻana i nā kaiapuni ākea, hiki i kona ola anti-corrosion ke piʻi i 7-8 mau makahiki.Eia nō naʻe, ma nā wahi ʻenehana a i ʻole nā ​​​​wahi haumia nui, e hoʻemi ʻia kona ola lawelawe.Eia nō naʻe, ʻaʻole kūpono nā uhi polyester no ka pale ʻana o UV a me ka pale ʻana i ka pauka kiʻiʻoniʻoni.No laila, pono e kaupalena ʻia ka hoʻohana ʻana i nā uhi PE, a hoʻohana pinepine ʻia lākou i nā wahi me ka pollution ea liʻiliʻi a i ʻole nā ​​​​huahana e koi ai i ka hoʻoheheʻe ʻana a me ka hana ʻana.

ʻO ka Polyester Hoʻololi Silicone (SMP)
Ma muli o ka loaʻa ʻana o nā pūʻulu reactive - OH/- COOH i ka polyester, maʻalahi ke hana me nā polymers a me nā mea ʻē aʻe.I mea e hoʻomaikaʻi ai i ka pale ʻana o ka lā a me ka pulverization o PE, hoʻohana ʻia ka resin silicone me ka paʻa ʻana o ka waihoʻoluʻu maikaʻi a me ka pale wela no ka hopena denaturation.ʻO ka lākiō denaturation me PE hiki ke ma waena o 5% a me 50%.Hāʻawi ʻo SMP i ka lōʻihi ʻoi aku ka maikaʻi no nā papa kila, me ke ola kūpaʻa corrosion a hiki i 10-12 mau makahiki.ʻOiaʻiʻo, ʻoi aku ka kiʻekiʻe o kona kumukūʻai ma mua o ka PE, akā naʻe, ma muli o ka hoʻopili ʻole ʻana a me ka hana ʻana i ka formability o Silicone resin i nā mea, ʻaʻole kūpono nā papa kila i uhi ʻia SMP no nā kūlana e koi ai i nā kaʻina hana hoʻoheheʻe he nui, a ua hoʻohana nui ʻia no ka mea. kūkulu hale a me nā paia o waho.

Polyester kū'ē i ka wā kiʻekiʻe (HDP, Polyester lōʻihi kiʻekiʻe)
E pili ana i nā hemahema o PE a me SMP, ʻo ka hui Pelekane ʻo HYDRA (i loaʻa iā BASF i kēia manawa) a me ka hui Suedena ʻo BECKER i hoʻomohala i ka HDP polyester coatings i ka hoʻomaka ʻana o 2000 hiki ke hoʻokō i ka 60-80% kūʻē i ka PVDF coatings, a ʻoi aku ka maikaʻi ma mua o nā mea hoʻololi polyester maʻamau. .ʻO ko lākou kūʻokoʻa i waho a hiki i 15 mau makahiki.Hoʻopili ʻia ka resin polyester kūpaʻa kiʻekiʻe me ka hoʻohana ʻana i nā monomers i loaʻa i ke ʻano cyclohexane e hoʻokō ai i kahi kaulike ma waena o ka hiki ke maʻalahi, ka pale ʻana i ka wā, a me ke kumukūʻai.Hoʻohana ʻia nā polyols manuahi a me nā ʻakika e hōʻemi i ka absorption o ke kukui UV e ka resin, e hoʻokō ai i ke kūpaʻa kiʻekiʻe o ka wā o ka uhi.ʻO ka hoʻohui ʻana o nā ultraviolet absorbers a me nā steric hindrance amines (HALS) i loko o ke ʻano o ka uhi ʻana e hoʻomaikaʻi i ka pale ʻana i ka wā o ke kiʻi pena.Ua ʻike ʻia ka uhi ʻana o ka polyester coil kiʻekiʻe e ka mākeke ma waho, a ʻoi aku ka maikaʻi o kāna kumukūʻai.
PVC Plastisol
ʻO ka resin PVC maikaʻi ke kūpaʻa wai a me ke kūpaʻa kemika, a ua uhi ʻia me ka ʻike paʻa paʻa kiʻekiʻe, me ka mānoanoa o ka uhi ʻana o 100-300 μ Ma waena o ka m, hiki iā ia ke hāʻawi i ka pale PVC maʻemaʻe a i ʻole ka mālama embossing māmā e like me ka uhi ʻana;Ma muli o ke ʻano o ka uhi ʻana o PVC he resin thermoplastic me ka mānoanoa kiʻiʻoniʻoni kiʻekiʻe, hiki iā ia ke hāʻawi i ka pale maikaʻi no nā pā kila.Akā, nāwaliwali ka wela o ka PVC.I nā lā mua, ua hoʻohana nui ʻia ia ma ʻEulopa, akā ma muli o kona ʻano maikaʻi ʻole o ke kaiapuni, hoʻohana liʻiliʻi ʻia i kēia manawa.

PVDF fluorocarbon
Ma muli o ka ikaika hoʻopaʻa ikaika ma waena o nā paʻa kemika o PVDF, ʻoi aku ka maikaʻi o ka pale ʻana i ka corrosion a me ka paʻa kala.ʻO ia ka huahana kiʻekiʻe loa i loko o ka ʻoihana kūkulu hale i uhi ʻia i ka pā kila, me ke kaumaha molekala nui a me kahi hoʻopaʻa paʻa pololei.No laila, ma waho aʻe o ka pale kemika, nā waiwai mechanical, ka pale ʻana o UV, a me ka pale wela

No ke koho ʻana i ka primer, ʻelua mau mea koʻikoʻi.ʻO kekahi e noʻonoʻo i ka pili ʻana ma waena o ka primer a me ka topcoat, a me ka substrate.ʻO ka mea ʻē aʻe, ʻo ka primer e hāʻawi i ka hapa nui o ke kūpaʻa corrosion o ka uhi.Mai kēia hiʻohiʻona, ʻo ka epoxy resin ka koho maikaʻi loa.Inā e noʻonoʻo ana i ka maʻalahi a me ka pale ʻana o UV, hiki ke koho ʻia ka polyurethane primer.
No ka uhi hope, ʻo ka koho kūpono loa, ʻo ia ke koho ʻana i kahi ʻano papa ʻelua, ʻo ia hoʻi hoʻokahi papa o ka hope hope a me hoʻokahi papa o ka topcoat hope, inā ʻo ka pā kila i uhi ʻia i loko o kahi mokuʻāina hoʻokahi.ʻO ka mua a me ka mua o nā ʻano like ʻole, a ʻo ka ʻaʻahu luna e pono ke kala māmā (e like me ke keʻokeʻo) polyester.Inā ʻo ka pā kila i uhi ʻia i ke kala i loko o kahi kūlana composite a i ʻole sandwich, ua lawa ia e hoʻopili i kahi papa o ka resin epoxy me ka adhesion maikaʻi a me ke kūpaʻa corrosion ma ke kua.
I kēia manawa, he nui ka hana kala i uhi ʻia nā papa kila, e like me ka antibacterial kala uhi, anti-static kala uhi, thermal insulation kala uhi, hoʻomaʻemaʻe iho-hoʻomaʻemaʻe kala, etc. nā mea hoʻohana, akā i kekahi manawa ʻaʻole hiki ke kaulike i ka hana ʻē aʻe o nā huahana i uhi ʻia.No laila, ke koho nā mea hoʻohana i nā papa kila i uhi ʻia i ke kala, pono lākou e maopopo i kā lākou pono maoli.