Nūhou

Ke kūʻai aku ka poʻe he nui i nā papa kala, ʻaʻole lākou i ʻike i nā ʻokoʻa ma waena o nā papa kala maikaʻi maikaʻi a me nā papa i uhi ʻia i ka waihoʻoluʻu maikaʻi ʻole, no ka mea, ua like nā ʻili, a ʻaʻohe pilikia inā ʻaʻole hoʻohana ʻia no kahi manawa manawa.Nui nā kumu e noʻonoʻo ai i ke koho ʻana i kahi uhi, ʻo ia ka mea nui e pili ana i ke ʻano o ka uhi ʻana, ka mānoanoa o ka uhi, ka waihoʻoluʻu a me ka uhi ʻana.Eia kekahi, i kekahi manawa pono e noʻonoʻo ʻia nā koi no ka primer a me ka uhi hope o ka uhi.ʻO nā ʻano o ka uhi i hoʻohana ʻia i kēia manawa no nā papa kila i hoʻopaʻa ʻia i ka kala, ʻo ia ka polyester coating (PE), fluorocarbon coating (PVDF), silicon modified coating (SMP), high weather resistance coating (HDP), acrylic coating, Polyurethane coating (PU), plastisol ka uhi (PVC), etc.

Polyester (PE, Polyester)

Loaʻa ka hoʻopili maikaʻi ʻana o ka PE i nā mea.He maʻalahi ka hana a me ke ʻano o nā papa kila i uhi ʻia i ka kala.He kūʻai aku lākou a he nui nā huahana.Nui nā koho o nā kala a me nā aniani.ʻAʻole kūpono nā pale polyester no ka pale ʻana i nā kukui ultraviolet a me ka pale ʻana i ka pauka o ke kiʻi uhi.No laila, pono e hoʻohana ʻia ka hoʻohana ʻana i nā uhi PE i kekahi mau palena.Hoʻohana maʻamau ia ma nā wahi ʻaʻole koʻikoʻi ka haumia o ka ea a i ʻole no nā huahana e koi ana i nā kaʻina hana hoʻoheheʻe he nui.

▲ Nā ʻoihana pili

ʻO nā mea kanu ʻoihana maʻamau a me nā hale kūʻai a me nā logistic warehouses ʻaʻole ia e hoʻopōʻino i nā papa kala iā lākou iho, a ʻaʻohe koi kiʻekiʻe no ka pale ʻana i ka corrosion a me ka anti-aging o nā papa kala.Hoʻonui ʻia ka noʻonoʻo ʻana i ka hoʻomaʻamaʻa a me ka maikaʻi o ke kumu kūʻai o ka hale hana.

ʻO ka Polyester Hoʻololi ʻia ʻo Silicone (SMP, Silicone Mobified Polyester)

No ka loaʻa ʻana o ka polyester i nā pūʻulu ikaika -OH/-COOH, maʻalahi ke hana me nā pūhui polymer ʻē aʻe.I mea e hoʻomaikaʻi ai i ka pale ʻana o ka lā a me nā waiwai pauka o PE, hoʻohana ʻia ka resin silicone me ka paʻa ʻana o ka waihoʻoluʻu maikaʻi a me ka pale wela no ka pane denaturation., a hiki i ka lakio denaturation o PE ma waena o 5% a me 50%.Hāʻawi ʻo SMP i ka lōʻihi o nā papa kila, a ʻo kona ola pale corrosion hiki ke lōʻihi e like me 10-12 mau makahiki.ʻOiaʻiʻo, ʻoi aku ka kiʻekiʻe o kona kumukūʻai ma mua o ka PE, akā ma muli o ka resin silicone ʻAʻole kūpono ka hoʻopili ʻana a me ka hoʻoponopono ʻana o ka mea, no laila ʻaʻole kūpono nā papa kila SMP no nā manawa e koi ai i nā kaʻina hana he nui. hoʻohana nui ʻia no ke kūkulu ʻana i nā hale a me nā paia o waho.

Polyester kū'ē i ka wā kiʻekiʻe (HDP, Polyster lōʻihi kiʻekiʻe)

E pili ana i nā hemahema o PE a me SMP, British HYDRO (i loaʻa iā BASF i kēia manawa), Swedish BECKER a me nā mea ʻē aʻe i hoʻomohala i nā uhi polyester HDP e hiki ai ke hoʻokō i ka 60-80% kū kūʻē o ka PVDF coatings i ka hoʻomaka ʻana o 2000, a ʻoi aku ka maikaʻi ma mua o nā silicon maʻamau i hoʻololi ʻia.ʻO ka uhi ʻana o ka polyester, ʻo kona kū ʻana o ka wā waho a hiki i 15 mau makahiki.Hoʻohana ka polyester resin kūpaʻa i ka wā i nā monomers i loaʻa i ka cyclohexane structure i ka wā synthesis e loaʻa ai ke kaulike ma waena o ka maʻalahi, ka pale ʻana i ka wā a me ke kumukūʻai o ka resin.Hoʻohana ʻia nā polyols non-aromatic a me nā polybasic acid e hōʻemi i ka absorption o ke kukui UV e ka resin., e hoʻokō i ke kūpaʻa kiʻekiʻe o ka wā o ka uhi.

Hoʻohui ʻia nā mea hoʻoheheʻe UV a me nā amines i hoʻopaʻa ʻia (HALS) i ke ʻano pena e hoʻomaikaʻi i ke kū kūʻē ʻana o ka ʻili kiʻi pena.Ua ʻike ʻia e ka mākeke i nā ʻāina ʻē a ʻoi aku ka maikaʻi o ka uhi ʻana i ka polyester coil coatings.

▲ Nā ʻoihana pili

ʻO nā mea hoʻoheheʻe metala ʻole (ke keleawe, zinc, aluminika, ke alakaʻi, a me nā mea ʻē aʻe) i loko o ka metallurgy a me nā ʻoihana uila ka mea paʻakikī loa i ke ola lawelawe o nā papa kala.ʻO nā mea kanu kila, nā mea kanu mana, a me nā mea ʻē aʻe e hana i nā media corrosive, kahi e koi ai i ke kūpaʻa corrosion kiʻekiʻe no nā papa kala.

PVC plastisol (PVC Plastisol)

ʻO ka resin PVC maikaʻi ke kū'ē i ka wai a me ka pale kemika.Ua pena pinepine ia me ka maʻiʻo paʻa kiʻekiʻe.ʻO ka mānoanoa o ka uhi ma waena o 100-300μm.Hiki iā ia ke hāʻawi i ka pale PVC maʻemaʻe a i ʻole ka hoʻomaʻamaʻa embossing māmā no ka uhi ʻana.;No ka mea ʻo ka PVC coating film he thermoplastic resin a he kiʻiʻoniʻoni kiʻekiʻe ka mānoanoa, hiki iā ia ke hāʻawi i ka pale maikaʻi no ka pā kila.Eia naʻe, nāwaliwali ka wela o ka PVC.Ua hoʻohana nui ʻia ia ma ʻEulopa i nā lā mua, akā ma muli o kāna mau waiwai kūlohelohe, hoʻohana liʻiliʻi ʻia i kēia manawa.

Fluorocarbon PVDF

Ma muli o ka ikehu paʻa paʻa ma waena o nā paʻa kemika o PVDF, ʻoi aku ka maikaʻi o ka pale ʻana i ka corrosion a me ka paʻa kala.Ma waena o nā pale kila kila prepainted i hoʻohana ʻia i ka ʻoihana kūkulu, ʻo ia ka huahana kiʻekiʻe loa a loaʻa ke kaumaha molekala nui.Loaʻa iā ia kahi hoʻopaʻa paʻa pololei, no laila, ma waho aʻe o ke kūpaʻa kemika, loaʻa iā ia nā waiwai mechanical koʻikoʻi, ka pale UV a me ka pale wela.Ma lalo o nā kūlana maʻamau, hiki i kona ola palekana corrosion ke hiki i 20-25 mau makahiki.I nā makahiki i hala iho nei, ua kaulana nā resins fluorine-containing copolymerized me chlorotrifluoroethylene a me vinyl ester monomers ma Kina a hoʻohana nui ʻia i ke kūkulu ʻana i nā paia o waho a me nā panela metala.Ma muli o ka hoʻohana ʻana i nā monomers vinyl ester hydrolyzable a me ka fluorine content, he 30% ka haʻahaʻa ma mua o PVDF.Ma kahi o %, no laila aia kekahi ʻokoʻa ma waena o kona kū ʻana i ka wā a me PVDF.ʻO ka maʻiʻo PVDF o ka uhi fluorocarbon i hana ʻia e Baosteel ʻaʻole i emi ma lalo o 70% (ʻo ke koena he resin acrylic).

▲ Nā ʻoihana pili

ʻO nā huahana i loko o ka ʻoihana kemika he palupalu a hiki ke hana i nā mea hoʻoheheʻe nui loa e like me nā waikawa a i ʻole nā ​​alkali.Ke ʻike ʻia i ka wai, hiki i nā kulu hau ke hana maʻalahi a pili i ka ʻili o ka pā kala, e ʻino ai i ka uhi ʻana o ka pā kala a hiki ke ʻino hou aku.i ka papa zinc a i ʻole ka pā kila.

02Pakaukau hoʻohālikelike hana o nā uhi like ʻole

ʻElua mau mea koʻikoʻi no ke koho ʻana i nā primers.ʻO kekahi e noʻonoʻo i ka pili ʻana o ka primer, topcoat a me ka substrate, a ʻo ka mea ʻē aʻe e hāʻawi ka primer i ka hapa nui o ke kūpaʻa corrosion o ka uhi.Mai kēia hiʻohiʻona, ʻo ka epoxy resin ka koho maikaʻi loa.Inā ʻoe e noʻonoʻo i ka maʻalahi a me ka pale UV, hiki iā ʻoe ke koho i ka polyurethane primer.No ka uhi hope, ʻo ka koho kūpono loa, ʻo ia ke koho ʻana i kahi ʻano papa ʻelua inā hoʻohana ʻia ka pā kila i uhi ʻia ma ke ʻano he pā hoʻokahi, ʻo ia hoʻi, hoʻokahi papa o ka primer hope a me hoʻokahi papa o ka topcoat hope.ʻO ka pena kumu e like me ka pena mua, a ʻo ka ʻaʻahu luna he papa o ka polyester ʻulaʻula (e like me ke keʻokeʻo).Inā hoʻohana ʻia ka pā kila i hoʻopaʻa ʻia i ka waihoʻoluʻu ma ke ʻano he hui a i ʻole ka sandwich panel, ua lawa ia e hoʻopili i kahi papa o ka epoxy resin ma ke kua me ka hoʻopili maikaʻi ʻana a me ke kūpaʻa corrosion.

03 Ke koho ʻana i ka ʻālohilohi

❖ ʻAʻole ʻo ka ʻōlinolino kahi hōʻailona hana hoʻouhi.E like me ke kala, he hōʻike wale nō ia.ʻO ka ʻoiaʻiʻo, ʻoi aku ka maʻalahi o ka pena (coating) e hoʻokō i ka nani kiʻekiʻe.Eia nō naʻe, ʻālohilohi ka ʻili kiʻekiʻe a ʻo ka hoʻomālamalama kiʻekiʻe o ka lā i ke ao hiki ke kumu i ka pollution māmā (nui ka poʻe ʻaʻole hoʻohana i nā pā aniani i kēia manawa no ka pollution māmā).Eia kekahi, he liʻiliʻi liʻiliʻi ka liʻiliʻi o ka ʻili kiʻekiʻe a he maʻalahi ke paheʻe, hiki ke hoʻopilikia maʻalahi i nā pōʻino palekana i ka wā e kūkulu ʻia ai ka hale.;ʻO ka hōʻailona mua o ka ʻelemakule o nā pā kila i uhi ʻia i ka waihoʻoluʻu ke hoʻohana ʻia ma waho, ʻo ia ka nalowale o ka ʻōlinolino.Inā makemake ʻia ka hoʻoponopono hou ʻana, maʻalahi ke hoʻokaʻawale i waena o nā papa kila kahiko a me nā mea hou, e hopena i ka maikaʻi ʻole;inā he kiʻekiʻe ka pena kua, e maʻalahi ka halo ke loaʻa ka mālamalama i loko.ʻO ka luhi ʻike maka o nā limahana.No laila, ma lalo o nā kūlana maʻamau, hoʻohana ʻia nā papa kila i uhi ʻia i ke kala no ke kūkulu ʻana i ka medium a me ka haʻahaʻa haʻahaʻa (30-40 degere).

04 Ke koho mānoanoa o ka uhi

ʻO ka microscopically, he hale porous ka uhi.ʻO ka wai a me nā media corrosive (chlorine ions, a me nā mea'ē aʻe) i ka lewa e hoʻokomo i nā'āpana nāwaliwali o ka uhiʻana, e hanaʻino ai ma lalo o ke kiʻiʻoniʻoni, a laila e pohu a peʻe ka uhi.Eia kekahi, ʻoiai me ka mānoanoa o ka uhi like, ʻoi aku ka paʻakikī o ka uhi lua ma mua o ka uhi mua.Wahi a nā hōʻike haole a me nā hopena hoʻāʻo corrosion pili, hiki i ka uhi mua o 20 μm a ʻoi aku paha ke pale pono i ka komo ʻana o ka media corrosive.No ka mea he ʻokoʻa nā ʻano hana anti-corrosion o ka primer a me ka topcoat, ʻaʻole wale ka nui o ka mānoanoa kiʻiʻoniʻoni e pono ke kuhikuhi ʻia, akā pono e koi ʻia nā primers (》 5μm) a me ka topcoat (》15μm).Ma kēia ala wale nō e hiki ai ke hōʻoia i ke kaulike o ka pale ʻana o nā ʻāpana like ʻole o ka pā kila.

Pono nā huahana PVDF i nā uhi mānoanoa.No ka mea, pono ia e hoʻolako i kahi hōʻoia ola lawelawe lōʻihi.ʻO nā koi no ka uhi ʻana i hope e hilinaʻi ʻia i ka noi, me nā panela sandwich e koi wale ana i kahi primer bondable.Pono ka pā kila i hana ʻia i ʻelua papa o ka uhi ʻana ma muli o ke ʻano corrosive o loko.ʻO ka mānoanoa ma kahi o 10μm.

Koho kala kala (hoʻohui ʻia!)

ʻO ke koho o ke kala e pili ana i ka hoʻohālikelike ʻana me ke kaiapuni a puni a me nā leʻaleʻa o ka mea nona.Eia nō naʻe, mai kahi ʻike loea, ʻo nā pena kala māmā he koho nui o nā pigments.Hiki ke koho ʻia nā pena anorganic me ka ʻoi aku ka lōʻihi (e like me ka titanium dioxide, a me nā mea ʻē aʻe), a ʻoi aku ka ikaika o ka pena.ʻO ka mahana o ka uhi pono'ī he haʻahaʻa haʻahaʻa i ke kauwela, he mea maikaʻi ia e hoʻonui i ke ola o ka uhi.Eia kekahi, inā paha e hoʻololi ke kala a i ʻole nā ​​pauka, ʻoi aku ka liʻiliʻi o ka ʻokoʻa ma waena o ka uhi ʻulaʻula a me ke kala kumu, a ʻaʻole nui ka hopena i ka helehelena.ʻO nā waihoʻoluʻu ʻeleʻele (ʻoi aku ka nui o nā waihoʻoluʻu ʻālohilohi) ka nui o nā waihoʻoluʻu kūlohelohe, a maʻalahi ke mae ke ʻike ʻia i nā kukuna ultraviolet, a hiki ke hoʻololi i ke kala i loko o 3 mahina.Wahi a nā ʻikepili hoʻāʻo kūpono, ʻoi aku ka kiʻekiʻe o ka mahana o waho i ke awakea o ke kauwela, ʻoi aku ka maikaʻi o ka ʻili keʻokeʻo ma mua o ka ʻili uliuli a ʻoi aku ka 19 degere ma mua o ka ʻeleʻele.Hiki i nā kala like ʻole ke hoʻohālikelike i ka lā.

05 ka hopena hoʻohālikelike kala

No nā papa kila i uhi ʻia i ka kala, ʻokoʻa ka nui o ka hoʻonui ʻana o ka wela o ka uhi a me ka pā kila, ʻoi aku ka ʻokoʻa o nā coefficient hoʻonui laina o ka substrate metala a me ka uhi organik.Ke hoʻololi ka mahana ambient, e hoʻololi ka pilina pili ma waena o ka substrate a me ka uhi.Hiki mai ke ko'iko'i o ka ho'onui a i'ole ka ho'emi 'ana, a inā 'a'ole i ho'omaha maika'i 'ia, e hiki mai ana ka pohā o ka uhi.Ua alakaʻi ʻo Baosteel i kahi hoʻāʻo hōʻike 8 makahiki ma Hainan o ke ʻano pena like, ka mea hoʻolako pena like, a me nā kala like ʻole.Ua hōʻoia pū ʻia nā hopena i ka liʻiliʻi o nā kala ʻulaʻula.

06 ʻokoʻa waihoʻoluʻu ʻālohilohi mānoanoa kumu i kēia manawa mānoanoa

Eia kekahi, eia mākou e wehewehe i ʻelua kuhi hewa e pili ana i ke koho ʻana i ka mākeke kūloko o kēia manawa:

ʻO ka mea mua, aia i kēia manawa ka nui o nā primers keʻokeʻo ma Kina.ʻO ke kumu o ka hoʻohana ʻana i ka primer keʻokeʻo e hōʻemi i ka mānoanoa o ka topcoat, no ka mea, ʻo ke kumu maʻamau ʻo ka corrosion-resistant primer no ke kūkulu ʻana he melemele-'ōmaʻomaʻo (no laila ka strontium chromate pigment), a pono e lawa ka mānoanoa topcoat e loaʻa ai ka mana huna maikaʻi.He mea weliweli loa kēia no ka pale ʻana i ka corrosion.ʻO ka mea mua, ʻoi aku ka maikaʻi o ka corrosion o ka primer, a ʻo ka lua, ʻoi aku ka lahilahi o ka topcoat, ma lalo o 10 microns.ʻO ia mau papa kila i hoʻopaʻa ʻia e like me ka nani, akā e ʻino ʻia ma nā wahi like ʻole (nā ʻoki, nā kuʻekuʻe, ma lalo o ke kiʻiʻoniʻoni, a me nā mea ʻē aʻe) ma lalo o ʻelua mau makahiki.

ʻO ka lua, ʻo ia nā papa kila i uhi ʻia i ke kala i hoʻohana ʻia i nā hana kūkulu.Hoʻohana ka papahana hoʻokahi i nā papa kila i uhi ʻia i ka kala mai nā mea hana like ʻole a me nā ʻāpana like ʻole.Ua like nā kala i ka wā o ke kūkulu ʻana, akā ma hope o nā makahiki he nui o ka ʻike ʻana o ka lā, hoʻololi nā kala o nā ʻāpana like ʻole a me nā mea hana.Nui nā laʻana o nā ʻano like ʻole e alakaʻi ana i nā ʻokoʻa kala koʻikoʻi.ʻOiai ʻo nā huahana mai ka mea hoʻolako hoʻokahi, makemake nui ʻia e kau i kahi kauoha no ka papahana like i ka manawa hoʻokahi, no ka mea hiki ke hoʻohana ʻia nā helu hui like ʻole i nā huahana mai nā mea hoʻolako uhi ʻokoʻa, e hoʻonui ana i ka hiki ke ʻokoʻa ke kala.

ʻAʻole hiki ke hoʻonui i ke ola lawelawe o ka hale i ke koho ʻana i nā mea kūpono, akā e hōʻemi hoʻi i nā kumukūʻai, no laila ʻoi aku ka maikaʻi o ke kaiapuni a me ka mālama waiwai.

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Taishan Industrial Development Group Co., Ltd.
E hoʻopili mau mākou i ka tenet lawelawe o ka maikaʻi mua a me ka mea kūʻai mua, hāʻawi i nā mea kūʻai aku i nā huahana maikaʻi loa, a hana i kā mākou mea maikaʻi loa e mālama i nā kumukūʻai no nā mea kūʻai.Ma muli o ke kaiapuni hoʻohana o ka mea a me ke kumukūʻai o ka hoʻolālā hoʻolālā, paipai mākou i ka hoʻohana ʻana i ka uhi kala Taishan Inc ʻoi aku ka maikaʻi, ʻo Maanshan Iron a me Steel kala a me ka uhi kala Shougang.Hiki ke hoʻohana ʻia nā huahana PE maʻamau no ka liʻiliʻi o 10 mau makahiki, a hiki i nā huahana PVDF ke mau no 20 a 25 mau makahiki.Nani a lōʻihi hoʻi, ʻoi aku ka nani o kāu hale hana.Hāʻawi kā mākou hui i ka hana hoʻokahi, ka hana ʻana, a me nā lawelawe kūʻai aku, e lawelawe ana i nā mea kūʻai aku ma ke kaʻina holoʻokoʻa mai ka nīnau noiʻi a ka noi hope.