Polyurea ndi organic polima yomwe ndi momwe isocyanate imachitira ndi utomoni wa amine wothetsedwa wa polyether, kupanga pulasitiki ngati mphira kapena mphira yomwe imakhala yopanda msoko.
Polyurea imafuna maphunziro apadera ndi zida zogwiritsira ntchito m'munda, kaya zimagwiritsidwa ntchito ngati cholumikizira cholumikizira kapena ngati zokutira.Shundi ali ndi pulogalamu yopitiliramaphunziro a kontrakitalam'malo.Pali ofunsira oyenerera ku China.
Monga lamulo,Shundipolyurea imatha kugwiritsidwa ntchito kukhala ndi zinthu zilizonse zomwe zitha kutayidwa mwachindunji munjira zaukhondo zaukhondo.Itha kugwiritsidwa ntchito pa konkriti iliyonse, zitsulo, matabwa, magalasi a fiberglass, zoumba.
Shundi polyureas imayamba kupanga mawonekedwe awo mkati mwa mphindi zochepa chabe.Polyurea yochiritsidwa imatha kukana kutentha kuchokera ku -40 ℃ mpaka 120 ℃, Ngakhale polyurea imakhala ndi kusintha kwa galasi komanso kutentha kwa kutentha, imayaka ikayaka moto.Idzazimitsa yokha pamene lawi lachotsedwa.Koma tilinso ndi polyurea yoletsa moto pazinthu zapadera monga ngalande zapansi panthaka ndi njira zamagalimoto.
Polyurea ikhoza kukhala yolimba kapena yofewa kutengera kapangidwe kake komanso kugwiritsidwa ntchito komwe mukufuna.Mavoti a Durometer atha kukhala kuchokera ku Shore A 30 (yofewa kwambiri) mpaka Shore D 80 (yolimba kwambiri).
Kwenikweni pali mitundu iwiri yosiyana ya machitidwe a aliphatic polyurea pamsika pano.Imodzi ndi makina opoperapo mpweya wambiri / kutentha ndipo ina ndi yomwe imadziwika kuti "polyaspartic polyurea".Dongosolo la polyaspartic ili ndi losiyana chifukwa limagwiritsa ntchito chigawo cha ester-based resin ndipo chimakhala ndi moyo wautali wamphika.Itha kugwiritsidwa ntchito pamanja pogwiritsa ntchito ma roller;maburashi;rakes kapena sprayers opanda mpweya.Machitidwe a aspartic sizomwe zimapangidwira kwambiri za "hot spray" polyurea system.Makina onunkhira onunkhira a polyurea ayenera kukonzedwa kudzera pakuthamanga kwambiri, pampu zotenthetsera zamitundu yambiri ndikupoperapo mfuti yamtundu wa impingement.Izi ndizowonanso kwa mtundu wa aliphatic wa mtundu uwu wa dongosolo, kusiyana kwakukulu kukhala kukhazikika kwa mtundu wa machitidwe a aliphatic.
Chilichonse patsamba lathu chimakhala ndi ma chart a Chemical Resistance pansi pa Documents tabu.
Chimodzi mwazochita zathu zikafika pakukhudzidwa kwambiri ndi mankhwala ndi SWD959Kuphatikiza apo, ngati muli ndi mankhwala enaake omwe mukulimbana nawo (kapena ntchito inayake), khalani omasukaLumikizanani nafekotero ife tikhoza kukuthandizani kudziwa dongosolo bwino zosowa zanu.
Tili ndi zokutira za urethane zochizira chinyezi komanso zokutira zolimba za polyaspartic zomwe zimakhala ndi mphamvu zambiri zolimbana ndi zosungunulira, ma acid kapena zosungunulira zina.Itha kukana 50% H2SO4ndi 15% HCL.
Zimatengera kapangidwe kake, ngakhale m'mapangidwe a Shundi, polyurea sidzachepa pambuyo pochiritsa.
Komabe, ili ndi funso labwino kufunsa kwa aliyense amene mwasankha kugula zinthu - kodi zinthu zanu zikuchepa kapena ayi?
Tili ndi mankhwala abwino kwambiri amtunduwu, SWD9005, Izi zayesedwa kwambiri m'makampani amigodi, ndipo zakhala zikuchita mopitilira muyeso.
Pogwiritsa ntchito kumizidwa / zitsulo, kumbukirani kuti PUA (polyureas) ndi epoxy sizofanana.Onsewa ndi mafotokozedwe aukadaulo / mtundu wazinthu.Makina a PUA amagwira ntchito bwino kumizidwa, koma amayenera kupangidwa bwino kuti agwiritse ntchito.
Ngakhale machitidwe a epoxy ndi okhwima kwambiri, machitidwe a PUA ali ndi kusinthasintha kwapamwamba komanso mitengo yotsika yodutsa pamakina opangidwa bwino.PUA ndi chinthu chofulumira kwambiri chobwerera kuntchito - polyurea imachiritsa mkati mwa maola ochepa poyerekeza ndi masiku (kapena nthawi zina masabata) a epoxies.Komabe, vuto lalikulu ndi mtundu uwu wa ntchito ndi magawo azitsulo ndikuti kukonzekera pamwamba ndikofunikira.Izi ZIYENERA kuchitidwa moyenera / kwathunthu.Apa ndi pamene ambiri akhala ndi zovuta poyesa ntchito zamtunduwu.
Onani wathuKugwiritsa ntchitomasamba masambakwa mbiri pa izi ndi mitundu ina yambiri yamapulogalamu.
Nthawi zambiri, utoto wabwino wa 100% wa acrylic latex umagwira ntchito bwino kuposa polyurea yopopera.Nthawi zambiri ndi bwino kuvala polyurea (posachedwa) mkati mwa maola 24 mutagwiritsa ntchito.Izi zimalimbikitsa kumamatira kwabwino kwambiri.Polyaspartic UV resistance topcoat ikulimbikitsidwa kuti igwiritse ntchito polyurea kuti ipewe kukalamba komanso kukana nyengo.