Polyurethane Amabili ingxenye yamafomu: i Uhlolojikelele, izici kanye nokubuyekeza

polyurethane Amabili ingxenye kuyinto polymer okuyinto kuveza ngokuxuba izithako ezimbili. Eyokuqala isenzo isocyanate kwakwakhe, kuyilapho kwakwakhe wesibili kungenzeka iqembu hydroxyl. Izakhi uxhumana, kwakheka polymer okuholela is kusukela isakhiwo polyurethane.

zinhlobo polyurethane

Ukuze i-polymer iqina kuyodingeka ukuba uhlanganise i-ejenti sokwelapha futhi base olinganise ezifanele. Two-ingxenye polyurethane kungenzeka emelelwa ukushintshashintsha polymerization abandayo futhi kushisa. Lesi sakamuva inketho zincwadi namaBhayibheli kudinga ukuchayeka lokushisa ephakeme kuyilapho wangaphambili polymerized ashisa zemvelo.

imphawu letibalulekile

Izinto ezichazwe asetshenziselwa ukwakha, babe high amandla izici, bona amelana ezindaweni ezinenzondo namathonya alimazayo, kanye okushisa aphakeme. Zonke lezi zici ekwandiseni ububanzi bokusebenzisa polyurethane. Kuyinto efanelekile ukwenziwa:

• upende;
• anamathelayo;
• sealants;
• varnishes.

Ngemva ukuxuba ukwakheka ozuza flowability kakhulu, okuvumela ukuba akhiqize therefrom izingxenye ukusakaza ubuchwepheshe. Isibonelo ukwaba amalungiselelo emkhonweni. Kulesi sihloko sikhuluma ezimbili-ingxenye polyurethane asakazwe izinhlobo. I izakhiwo izinto zinqunywa yezingxenye yasekuqaleni. Kule ngxenye ebalulekile hardener isocyanate futhi base.

izici ezingeziwe

I izakhiwo impahla ingase yehluke kuye ngesistimu ukwengeza izinto ezahlukene, ezifana fillers futhi nodayi. Ezinye polyurethanes esikhundleni iraba, ngoba libhekene kuyaqina okusezingeni eliphezulu. Polyurethanes kungatholakala ukuthi ziyakwazi ekubuyiseleni ezakheke yokuqala ngenxa umonakalo mechanical, okubenza babe ezibalulekile ikakhulukazi embonini.

Uhlolojikelele izindawo ukusetshenziswa

Two-ingxenye polyurethane wathola okwandile namuhla. Ezazisetshenziselwa ukwenza womshini ubucwebe, zezinqubo kanye Castings amagiya. I izakhiwo ukusebenza izingxenye eziba umphumela kuyizipho ngempela eliphezulu. Lokhu kuvumela ukusetshenziswa kwento ngisho ngaphansi kwezimo ezinzima. Ngenxa yalokho, bakwazi ukuyikhokha wezinto viscous, kanzima futhi livikela amakhemikhali. Njengoba yokugcina kungaba:

• igiya;
• izihlahla;
• izipilingi;
• amasondo;
• ezinamasondo;
• amabhande toothed;
• uphawu izakhi;
• ezinengilazi abahlukahlukene zokuzivikela;
• bamba;
• amapayipi;
• Yekuchumana amabombo;
• emkhonweni.

Yekuchumana bazimisele ukukhonza njengephayona high eside, ngoba amelana ukugqoka futhi okuhlala kakhulu. Liquid ezimbili ingxenye nokunwebeka polyurethane amafomu ngesisekelo amasondo amaloli kanye forklifts. Ngenxa yalokho, umkhiqizo ingatholakala, okuyinto isikhathi eside ezingaphezu kuka zenjoloba. Bakulungele ukusebenza ngisho nalapho umonakalo yimpandla.

Indaba luyisisekelo asekelayo Umhlahlandlela ezinamasondo, okuyinto ezisebenza ngokubambisana ne ibhande elihambayo kanye elihambayo. Izakhi alungele ukukhonza isikhathi eside kakhulu kuneminyaka iraba ibhande ukudluliswa, amathrekhi namaculo.

Indaba osetshenziselwa damper kanye izakhi kubekwa uphawu, ngoba ukumelana ephakeme ukugqoka futhi ihlala isikhathi eside. Yingakho izingxenye iraba eminyakeni yamuva nje futhi kaningi sithathelwe indawo polyurethane. Ukuvumelana nezimo kulokhu uhlala ezingeni elifanayo. Two-ingxenye polyurethane udini ithole isicelo enkulu ekwakhekeni amapayipi, izimpawu amandla kanye ukumelana amakhemikhali. Elements etholakala yinye. Ngaphezu kwalokho, besebenzisa i-material abakwazi kuphela ukuvikela amaphayiphi kusuka ngaphakathi, kodwa futhi ngaphandle.

Izibuyekezo ezindaweni eyengeziwe ukuze usebenzise lezozinkonzo

Ngokusho abathengi, polyurethane ezimbili ingxenye isetshenziselwa ekukhiqizeni anamathelayo kanye upende varnishes. Ingxube etholwe emva polymerization amelana imithelela zangaphandle, siqine futhi alungele ukukhonza isikhathi eside. I-polyurethane ketshezi isetshenziswa ikakhulukazi womshini amafomu, okuyinto eyenziwa ekubunjweni ubuchwepheshe. Ngemva kwalokho, le mikhiqizo asetshenziswa ukuze asakazwe:

• aphathekako;
• polyester inhlaka;
• wax;
• Gypsum.

Kusukela amazwi abathengi, uketshezi ezimbili ingxenye polyurethane isetshenziswa futhi emkhakheni wezokwelapha, lapho impahla luyisisekelo amazinyo. Polyurethane isetshenziswa kaningi kanye jewelry yokukhiqiza. Kule kungaba izibuya ngisho lichithwe, izimpawu, eliqinile, amelana ukugqoka futhi ukumelana imithwalo.

Ngokusho abathengi kwezinye izindawo polyurethane izingxenye njengabakhulu kunani ensimbi for eziningi nemingcele. Nokho, senqubo yokukhiqiza kuba lula kakhulu, okuvumela ukuba bathole eMhlanganweni ekhishwa izingxenye miniature kanye Castings omkhulu, eyokuqala angaba nesisindo hhayi ningi than igremu, kuyilapho wesibili bangase babe mass angu-500 kanye nokunye.

Ukuze uthole ukwaziswa okwengeziwe polyurethane for isikhunta

polyurethane Amabili ingxenye ngokwenza isikhunta esikwazi ukumelana inombolo ethile Castings. Uma sikhuluma izitembu abavamile laba, amatshe yabalingisi kungaba kwenziwe izikhathi okungenani 1,200. Uma enqubeni ifomu ukukhiqizwa wasebenzisa izinto engcono nezidingo ukulungiswa ingxube kuhlangatshezwene nazo ke ifomu uzolunga ukumelana kufika ku 4,000 Castings. Lokhu kuyiqiniso ngisho nalapho ukuma waqinisekiswa cleaner ukucutshungulwa, kanye esetshenziselwa ukugcwaliswa akuyona olwalwenza kakhulu, insimbi kanye izinto ingcina.

Bheka uhla ezimakethe zomhlaba jikelele, ungakwazi ukuqonda ukuthi polyurethane namuhla imelelwa brand eziningana, ukugqamisa phakathi kwabo:

• vulkopreny;
• Vulkollan;
• adipreny;
• poramoldy.

Uma uthanda brand isiRashiya, kufanele ukhethe yemibhalomfihlo-PU 5, SKU-PFL-100. Yakhiwa polyester production ezifuywayo, kodwa izinga akuyona nakakhulu kuka nozakwabo zabo zakwamanye amazwe. Ngaphezu kwalokho, zenza ehola ezicini ezithile.

Brand polyurethane kuhluke Ukwakheka kwamakhemikhali, inani amaqembu urethane, ukwakhiwa amaketanga polymer kanye nezinhlayiya impahla isisindo. Izakhiwo zingalawulwa by Ukukhetha ngokucophelela impahla eluhlaza. Umphumela ingatholakala ingxubevange futhi branched uchungechunge polymers.

Izithasiselo yamafomu polyurethane

polyurethane Amabili ingxenye yamafomu kungenzeka kulekelelwa izinto ezihlukahlukene, okuyilezi:

• modifiers;
• fillers;
• nodayi.

Basuke okudingekayo ekuthuthukiseni izinga kwengoma. Ngokwesibonelo, ukusheshisa ukuphendula asetshenziswa modifiers, okuyinto kunezelwa izingcezu ezincane. Ngokuphathelene zombala, bayakwazi ukushintsha indlela abukeka ngayo indlela elementi kombala. Ukuze kuncishiswe okuqukethwe plastic, fillers asetshenziswa okukuvumela imikhiqizo futhi singabizi.

Excipients kungaba:

• talc;
• umcako;
• carbon omnyama;
• zamakhemikhali, ingilazi, carbon zesivikelo sesifuba.

Nokho, lolo hlu ayikwazi kubhekwe ephelele. ifomu Polyurethane ngamatshe ube umbala shades kusuka ophuzi ukukhanya brown. Uma ukusetshenziswa izithasiselo ekhethekile, kungenzeka ukuthola cishe yimuphi umbala.

isiphetho

Polyurethanes namuhla isetshenzisiwe cishe zonke izindawo mboni. impahla Okuningi isetshenziswa ekuphileni kwansuku zonke. Njengoba yezindawo ethembisa izenzo ketshezi bicomponent polyurethane. ukusetshenziswa kwalo lula futhi speeded up umsebenzi ukulahlwa eziphathekako usimende. Ngosizo polyurethane kwenza kwaba nokwenzeka ukukhiqizwa amafomu yezakhiwo encane, kuvuleke kanye izakhi okuhlobisa, ngisho ekhaya.