Urea-formaldehyde kēpau:? Iecaianoaaiiuo, ka waiwai a me ka noi

Urea-formaldehyde kēpau e hoʻomano hoʻohana i kūkuluʻia, he laau, a me nā hana. Hanalima ala e paka i ko lakou mua ka hoʻomaka 'ana ma ka' Amelika i ka makahiki 1927. No ka ikaika a me ka wai ia'ku o polyesters a me ka pīlali kēpau ia mau mea i kekahi i emi iki mahope. Ma ka kekahi lima, a me ka hana nui ho'ēmi ia.

Pehea e e

Loaa kēpau CFS, i ua hiki ke 'ike mai i ka inoa, ma ka polycondensation o ka formaldehyde me ka urea. Ka mea, ho i ka pili-flammable koʻana koko wehe ai i ka (viscosity) a me ka waihoʻoluʻu hiki oko ma luna o ka papa. ? Iecaianoaaiiuo o ka urea-formaldehyde kēpau nō kāu komo ai i ka hoʻohana 'ana o kūikawā, jacketed a stirrer pakahi, apparatuses. Ka holoʻokoʻa manufacturing kaʻina hana o ia huahana komo ai ekolu walaʻauʻana a me ke kapuai.

• polycondensation;

• ʻakika condensation;

• ka maloʻoʻana.

Ke polycondensation kēpau ua lawe mai i loko o ka'ākilikai meakino ma ka pH o ka naoh pāʻoihana like me 7.5-8. Iloko o ka manufacturing kaʻina hana, e hōʻoia 'ia ai ka molar lākiō urea: formaldehyde mea 1: 1.6-1.9.

Kaʻakika condensation ua lawe mai i loko o ka meakino me ka pH = 4.5-4.8. Ma kēia kahua, aie i ka māhuahua hakakino kaumaha hoʻomaka e mahuahua dramatically ka (viscosity) o ka pāʻoihana. еще одну порцию карбамида. I ka pau ana o kaʻakika condensation naoh i loko o ke kēpau hou i kekahi hapa o ka urea. Na koi nui o keia waiwai he pōpilikia ai i ka molar lākiō o na eiiiiiaiou i loko o ka kūpono pāʻoihana ua 1: 1.3-1.4. Ma ka ka maloʻoʻanaʻanuʻu ke kēpau ua like no ka mea i makemake i pili (viscosity) loina. продукт охлаждают и модифицируют с целью снижения его токсичности. Ma ke kahua hope o ka huahana ua ho'ēmi a ua Hoʻololi 'e ho'ēmi i kona kaʻawahia.

Laulā o ka i

Urea-formaldehyde kēpau ua hoʻohana 'ia (haʻilula N = CH2 C = O, a NH2 HOCH2NH C = NH2) e hiki i loko o ka? Iecaianoaaiiie:

• Fiberboard a me ka particleboard;

• plywood;

• putties, pena a me varnishes;

• ona mau hoʻopale pepa a me ka paperboard (impregnation);

• hua.

карбамидоформальдегидная (КФ-МХ2) в бурении . Kekahi pinepine hoʻohana urea kēpau (KF-MX2) ma kaʻeli. Ma keia hihia ka mea, ua hoʻohana 'ia e like me ka lepo pipili no hoi kumu slurry. Ka la mahope, i ka huli, e h ÷ läÿau, i hiki hoopaakiki koke i loko o ka lewa. Lepo pipili no slurries i hoʻohanaʻano nui no ka mālama 'i ka pōkā pū , a me ka mālama iā lākou, mai ka popopo.

Clay-ka nānā 'CFS

Ma na hana o ka woodworking hana i loko o kona maemae palapala ua kākaʻikahi i hoʻohana CFS. Nui hou, he pono ole o ka papa kuhikuhiE hehee ai e like me ia ma ka carpentry urea kēpau glue. I ka papa kuhikuhiEʻano likeʻole o nā huahana i ma luna o ke kumu o CFS, aia no elime:

• Ec-B - e hoʻokēʻai iho, hoola iho lina;

• CF-O - General manao (formaldehyde maʻiʻo i oi aku mamua o 0,25%);

• KF-HI - haʻahaʻaʻawahia, hoʻohana 'ia no ka? Iecaianoaaiiie o fiberboard a me ka particleboard;

• KF-F - me ka loa viability;

• KF-BZ - hiehie i ka pono o ka hao ec-B a me KF-F.

Ka poe ola,-CF-B adhesives woodworking hana o ka hana eʻano nui ia i loko o ka? Iecaianoaaiiie o plywood a me kaʻoihana naʻau papa i hookahi-kīkoʻo kona lua kaomi waina. Malotokischny huahana CF-O ua hoʻohana 'ia ma ka hapanui tuko i pepa wale no. Nō hoʻi, hiki ke hoʻohana i kēia lina i loko o ka hana o ka plywood. Chipboard a fiberboard me kona hoʻohana 'ia' aʻole i. No ka mea? Iecaianoaaiiie o nā papa ma muli o ka? Inoaia ole puluniu huahana ua noi CF-HI mark.

Glue me kiʻekiʻe viability mea hemolele no ka ai pili aku kela ano keia ano o kaʻoihana a wahi. Plan i loko o kekahi mau hihia e hiki no hoi ke hoʻohana 'e hooikaika i ka nawaliwali soils. Universal adhesives KF-BZ e loa olelo ia i loko o ka hana o ka plywood a me kaʻoihana. No hoi, ka mea hiki ke hoʻohana 'ia ma ka? Iecaianoaaiiie o nāʻano likeʻole o ka joinery huahana. Ke kaumaha ma muli o ka 'ano o ka hoola iho la oia i na adhesives ma muli o ka FSC hiki ke hoʻohana' ia no nā wela a me ke anu tuko i.

I kekahi manawa, ma ke kukulu, wahie, a no laila, ma luna o. D. anei hoʻohana a kūikawā adhesives me ka okoaʻano o nā loli mea hoʻonui.

Nā waiwai o ka kēpau HI-CF

Hoakaka mai urea-formaldehyde kēpau, ke kaumaha ma muli o ka palapala noi i e okoa. Mai ka papaʻaina ma lalo nei i nā 'ike ma luna o nā waiwai o ka loa hanohano KF-HI kēpau hoʻohana i loko o ka? Iecaianoaaiiie o fiberboard a me ka particleboard.

Other lama KF KF-HI-kēpau ua hookoaiaʻe kuhikuhi ma ka hoemi (viscosity) ma ka kŘpa a kiʻekiʻe maloo mea. Kēia mau hiʻona ae e hoʻolauna iā ia i loko o mixers me airlessʻehu. Ke ano o ka pono, ma ka huli, i hiki i ka nui ka ho'ēmiʻana i ka ona mau o ka laau lapaau me ka kēpau (particles), a pela emi iho i ka manawa o ka ua e papa.

Impregnating kēpau (SKFP)

ua kēiaʻano o CFS hoʻohana ma o ka hana o ka wai-hoʻopale pepa a me ka pepa. I kekahi manawa ka mea, ua i hoʻohana 'ia e impregnate i ka Nani Loa owili Film, plywood a me ka particleboard a me ka fiberboard. ʻO kēia papaʻaina hōʻike i nā 'ano o ka huahana.

Ano o ke kēpau hoʻohana no ka? Iecaianoaaiiie o ka paleʻana

No keia mea, nō kāu pili huahana momoku ahi K-421-02 ho melaminokarbamidoformaldegidnaya aniani moakaka kēpau wai a me na kēia mau waiwai:

Mall KF-MX2

Urea-formaldehyde kēpau hoʻohana i ka hana lepo pipili no slurries pono i like loa me ka GOST.

Urea formaldehyde hua: no ka laulā o ka i

Kēia huahana uaʻano nui hoʻohana i kūkulu i ka'īpale mea. Ua hiki ke hoʻohana 'ia no'īpale mai ke anu.

• paia;

• kaupaku makahiki;

• waena palaoa a me nā kaupaku.

I e like me kaʻike mau hoomaka polystyrene, polystyrene CFS i kekahi mea nui lanakila. Kēia mea i pono 'ole-flammable. urea-formaldehyde kēpau mea he pūʻulu o thermosetting mea. I ka ka mea nana e hoole naoh i loko o ia hiki ole ia ma ka ho'ākāka 'ana. Alaila, CFS-hua iloko o ke ahi, aole ia i hana i ka mahele heheʻe i ka. Na wale - ma lalo o ka aoao o ke kiʻekiʻe ana wela ka mea haalele i ke kaupaonaʻana iki ma ka hoʻokaʻawale 'ole-hoʻopōʻino i kanaka ola, a me ka naikokene o carbon dioxide. Ke hana i ke ola ana o ka hua i loko o kēia laha 'mea e pili ana i ka like me ia o ka extruded polystyrene - ma kahi o 80 makahiki. Kēia mea hiki ke hoʻohana 'ia i loko o ka palapala o ka papa, a me ka wai a me ka moku'āina. Ma ka hope hihia, me ka nuipa a ua wale ninini i loko o ka lua o nāʻano likeʻole o ka hale kanu'ōiwi.

Pehea e e hua CFS

No ka mea manawa mua keia hana hoihoi 'atikalaʻikeʻia i loko o ka hopena o 30-ies ma Germany. Ma Europa, ka mea, ua hoʻomano hoʻohana 'ia i loko o ka hana o ka hale a me nā hale. I ka 30% o nā hihia me kaʻano o ka'īpale paʻa i ka pā hoʻohana i kēia mea. Ma nā makahiki hou a me ka poe hanohano CFS-hua i loko o Rusia.

Manufacturing enehana o keia iaia? Aaaoaeuiuo, kŘpa a mea. Ma kuai he mea hiki kekahi kūikawā, kŘpa a inexpensive pono, e kuai ana, ma ka rula, hiki e kekahi. Hana i na nā mea hoʻonoho like penei:

• i loko o kekahi o nā ipu ua piha i ka wai pāʻoihana o ke phosphoricʻakika , a me ka hua nui Agena;

• i loko o kekahi ipu wale waiho pono urea kēpau;

• i loko o ka barela hamama taps.

No ka hoʻohuihui ka mea eiiiiiaiou hoʻohana ikaika EII ni. Urea-formaldehyde kēpau, a me ka hua kahe i puhi ia ia i loko o ka kūikawā mīkini kāwili. Ke kūpono nuipa i loko o ka ipu ua nininiʻia i loko o ka lua ma ka bight? Ieoaeunoaa iauaeoia kīʻamo.

Nā waiwai o ke kēpau hoʻohana no ka? Iecaianoaaiiie o ka hua

No keia mea, ke hana ua ana hoʻohana huahana momoku ahi KFZH-PV. He kinowai kēpau mea keʻokeʻo paha malamalama-ʻeleʻele kala like 'ole, hoakaka a pono like loa me ka olelo o ka GOST.

I 'ae' ia CF-kēpau

Penei, I loaʻa loa he ākea ma ke kukulu hana a me ka urea kēpau palapala noi. Kēia huahana ua hoailono aku la e like me na olelo o ka GOST 14192. Ke i 'ae' ia ma ka ipu me ka CFS a pila uku pono ia i hiki mai:

• Ka Hookah ka inoa me kona hoʻokuleana kope ';

• upena ke kaupaona;

• Kēpau mark;

• i ka lā o ka hana;

• 'ōhui helu;

• i ka inoa o ka hae wale.

E like me ka mea e e piha kēpau

Nui woodworking a? Ieoaeunoai poe kuai ia huahana ana i ka nui loa na mea. Ma keia hihia, no ka urea-formaldehyde kēpau KF ua hāʻawi mai i kona mākaʻikaʻi ma alahao poʻina nalu. puu uuku'ōhui piha i loko o kila pahu. Recent mua ana, e like me GOST 13950, pono e ho'ōla loa holoi. Standards ae e mahiki ana kēpau a me loko o ka nunui-pahu me ka nīnūnē mawaho mā.

hoʻokolohua ki ina hana like

E urea kēpau batches kanu (me ka ia 'ano, a he pāʻumi ole aku ma mua o 200 tona). E kaha i ka mea e like ai o ka huina hoonui i ho'āʻo. Ma ke kahua mua o ko lākou hana:

• mea hōʻikeʻikeʻuʻuku wahi Eia kekahi laʻana metala Tube;

• i huiia me ka waiho iho i nā Eia kekahi laʻana o ka aniani kiaha;

• ka lepili i ka lā o ka inoa, a me ka mea hōʻikeʻikeʻuʻuku paena.

Maoli iho ikea ai i nā pilikia makapō e nana, e like me ka pono i hoʻoholo i loko o ke keʻena hoʻokolohua.

• kaupaona ana o ka maloo i koe o kela a me keia hāpana;

• ka nui hapa iki o ka noa formaldehyde;

• ka hydrogen ion lehulehu;

• tuko pīlali manawa;

• miscibility me ka wai;

• tensile ikaika.

Pehea e lawe aku a me ka hale kūʻai

Kaʻi aku urea kēpau (Class o ka pilikia o ka waiwai - II) e ia ma nā mea a pau amo 'ole. At lewa mahana ma lalo 0 ° ^C ua 'ae' ia ka hoʻohana wale wela poe kuai moni a me pahu waihona me ka hō'īpale ka paleʻana. Ma ka hope Ina, ka paio hahana maoli nō ua hanaia ma ka hoolako wela ka wai a hiki i ka lākeke o ka pahu. CFS wela ma hope o kēia kaʻina hana e ole oi aku mamua o 25 ^C. To paka mahu hahana maoli nō kēia i papaia huahana.

I ke kau, i ka wa a ka makani, mai na 25 ^C, kaʻi aku kēpau hiki ole hou aku no 10 lā. Kūʻai i ka huina hoonui ma ke anawela ma lalo 5 ^{° C,} aʻaʻole kiʻekiʻe ma luna o ²⁰ ° C i loko o ka hōʻailonaʻia ipu. Ua ua i ae e malama i barela a pahu poʻina nalu me ke kēpau ma ka pololei Map. Nō hoʻi GOST Aʻo Maikai e hoahu pahu waihona me ia huahana ma lalo o ka uhi mai iāʻoe,ʻaʻole i hiki waiū i ke kimu.

Urea kēpau: nā hoʻohua a me nā lama

I ka lā, e hua mai ma kahi o 500 tausani. Na tona o CFS ka makahiki i loko o Rusia. Ka nui loa wahi lulu poʻe komo i loko o ke kala o keia huahana mea:

• "Ugra lespromholding";

• "Shatura";

• Cherepovets a Volga māhele plywoodʻoihana a nā hale hana;

Ua ua i komo i loko o ko kakou aina i ka hana o nā huahana e like me urea-formaldehyde kēpau, na nā hoʻohua o ka Lūkini-Pinilana. Ua specializes i loko o ka? Iecaianoaaiiie o keia mea, no ka laʻana, JSC "Metadynea" a he lâlâ o ka Europa e hopohopo nei Hawaiian Krono Group Company "Kronostar East." Eia hou, i ka CFS o kekahi o nāʻano likeʻole o nā huahana ua hanaʻia e nā Likes o Nine Inch hana like "Akron" a me ka "Metafaks".