I-polyurethane spraying iyimishini yokufafaza enengcindezi ephezulu ye-polyurethane.Ngoba impahla yeimishini yokufafaza enengcindezi ephezuluishayelwa egunjini elincane lokuxuba futhi iphothwe ngamandla ngesivinini esikhulu, ukuxuba kuhle kakhulu.Izinto ezihamba ngesivinini esikhulu zakha amaconsi enkungu amahle emlonyeni we-isibhamu sokufuthabese uwafutha ngokulinganayo phezu kwento.Ukufafaza nge-polyurethane enegwebu kusetshenziselwa kakhulu ukulondoloza ukushisa nokuvala uphawu ekulondolozeni ukushisa kanye nesiqandisi.Isetshenziselwa ukumboza izinto zokuvikela ezishisayo ezifana namathangi amakhulu okugcina ayindilinga, izifakelo zamapayipi anomumo oyisipesheli wobubanzi obukhulu, nezindonga zesitoreji esibandayo, futhi ingabona ukugcwala kwamagwebu endaweni.
Izinkinga eziningi zivame ukuhlangana nazo ekwakhiweni kwe-polyurethane spraying, ngakho-ke yiziphi lezi zinkinga?Kwenzeka kanjani lokhu?
Lokhu ikakhulukazi kuyinkinga yokusebenza, echazwa kanje:
| Inkinga Ejwayelekile | Isizathu | Phakamisa |
| Indawo yegwebu eqinile futhi engajwayelekile | I-atomization engalungile, ikakhulukazi evame kakhulu nezifutho zokuxuba umoya zasendlini | Ingcindezi yangemuva ye-compressor yomoya kanye nebanga ukusuka ku-base plate kungalungiswa ngendlela efanele.Uma kungenzeka, yelula futhi unciphise umlomo wombhobho wokuxuba umoya.Ibhobo elincane.I-polyurethane high-pressure sprayer ingagcinwa kahle kude ne-substrate. |
| Isikhathi sogwebu sishesha kakhulu kanye ne-viscosity yokumnyama nokumhlophe | ||
| Igwebu lithambile kakhulu | I-polyether eningi kakhulu | Kunconywa ukwenza ukuhlolwa kwamagwebu mahhala ngesilinganiso esifanele.Uma isathambile, ungakwazi ukwandisa ingxenye ye-isocyanate l ngendlela efanele.Uma lisathambile, kufanele kubhekwe ukuthi i-ethylenediamine kufanele isetshenziswe yini, kwandiswe ngokufanelekile izinto ezingavuthiwe ezisetshenziswa ezintweni ezimhlophe. |
| igwebu lihlanzekile
| Amanzi amaningi kakhulu ohlelweni | Uma kuphela ingaphezulu lishwabene, cabanga ukuthi ingabe umehluko phakathi kwezinga lokushisa lezinto ezibonakalayo nezinga lokushisa le-ambient mkhulu kakhulu, uma izinga lokushisa lempahla liphezulu, kanye nezinga lokushisa le-ambient liphansi.Esinye isizathu ukuthi kunomehluko omkhulu kakhulu ku-viscosity phakathi kwe-polyether ne-Isocyanate kanye ne-isocyanate eyengeziwe. |
| Umehluko we-viscosity phakathi kwe-polyether ne-Isocyanate mkhulu kakhulu | ||
| Amandla aphansi we-peel phakathi kwegwebu ne-substrate | Ingaphezulu le-substrate alihlanzekile, ngothuli oluntantayo noma amabala kawoyela | Kwakungekho ukungena kwe-substrate, futhi umswakama ku-interface wawubonakala ngokucwecwa.Ngaphezu kwalokho, izinga lokushisa le-substrate liphansi kakhulu, futhi isivinini se-foaming sishesha kakhulu.“Ukufafaza” (okungukuthi ukufafaza ungqimba oluyisisekelo oluncane ngokushesha), kodwa isifutho esishubile singabangela ukushuba okukhulu nokuxebuka. |
| ukuqhuma kwebhamuza
| Ngenxa yezinga eliphansi le-branching kanye nokusebenza kwe-polyether esetshenziswa ohlelweni lwe-foaming | I-Sucrose, i-mannitol ingangezwa njengesiqalo se-polyether ngokufanelekile.Ngaphezu kwalokho, khulisa ngokufanelekile inani lezendlalelo zesifutho ngesikhathi sokwakha ukuze ugweme izenzakalo eziphindaphindiwe |
| hlukana
| Isikhathi sokukhihliza amagwebu sishesha kakhulu noma sihamba kancane | Naka ukulawula isivinini esikhihliza amagwebu |
| I-silicone surfactant eningi kakhulu yengezwa ohlelweni olukhipha amagwebu |
Isikhathi sokuthumela: Jul-01-2022