Yintoni impahla yePU?
Inkcazo esisiseko yezinto zePU
I-PU imele iPolyurethane, imathiriyeli yepolymer esetyenziswa kakhulu kumashishini ahlukeneyo. I-polyurethane iveliswa yi-chemical reaction phakathi kwe-isocyanate kunye ne-polyol, kwaye inoluhlu olubanzi lwezinto ezibonakalayo kunye neekhemikhali. Ngenxa yokuba i-PU inokuba neempawu zayo ezihlengahlengiswayo ngokuguqula ukubunjwa kwayo, isetyenziswe kuluhlu olubanzi lwezicelo, ukusuka kwimpahla ukuya kwizinto zokwakha.
Ukuhlelwa kunye neePropati zePU
I-Polyurethane inokuthi ihlelwe kwiintlobo ezahlukeneyo, kubandakanywa amagwebu aqinileyo, amagwebu aguqukayo, i-elastomers, i-coatings kunye ne-adhesives. Amagwebu aqinileyo aqhele ukusetyenziselwa ukugquma kunye neepaneli zokwakha, ngelixa amagwebu athambileyo asetyenziswa kakhulu kwifanitshala, izitulo zeemoto kunye noomatrasi. Ii-elastomers, kwelinye icala, zibonisa ukuqina okufana nerabha kwaye zisetyenziselwa izihlangu zezihlangu, amatayara njalo njalo. Ngenxa yokuqina kwayo okulungileyo, ukuxhathisa kwe-abrasion, ukuxhathisa kweoli kunye nokuguga, izinto zePU zibonisa ukusebenza kakuhle kwizicelo ezahlukeneyo.
Ukusetyenziswa kwePU kumashishini ahlukeneyo
I-polyurethane inoluhlu olubanzi lwezicelo kwiinkalo ezahlukeneyo. Ngokomzekelo, kwishishini le-textile, i-PU isetyenziswa ngokuqhelekileyo kwimveliso yesikhumba sokwenziwa, esinokwakheka okufana nesikhumba kodwa singabizi kwaye kulula ukuyigcina. Kushishino lokwakha, i-PU igwebu isetyenziswa njengesixhobo sokugquma esikumgangatho ophezulu, esithandwayo ngenxa ye-thermal conductivity ephantsi kunye nokumelana nokufuma okuhle. Kumzi mveliso weemoto, izixhobo zePU zisetyenziselwa ukwenza amagwebu ezihlalo kunye neendawo zokuthambisa zangaphakathi njengoko zibonelela ngokukhululeka kunye nokuqina.
Ubuhlobo bendalo kunye nokuzinza kwezinto zePU
Njengoko ulwazi lokusingqongileyo lusanda, ukuzinza kwezinto zePU kube yinkxalabo enkulu. Ngokwesiko, ezinye iikhemikhali ezinobungozi zinokusetyenziswa kwimveliso yePU, kodwa kwiminyaka yakutshanje, ishishini liye laphuhlisa iinkqubo zokuvelisa ezihambelana nokusingqongileyo ezifana ne-polyurethane esekwe emanzini kunye nokusetyenziswa kwezixhobo ezivuselelwayo. Ezi zixhobo zitsha ze-PU azinciphisi kuphela impembelelo kokusingqongileyo, kodwa zikwaphucula ukhuseleko lwemveliso kunye nokuzinza.
Isishwankathelo
Yintoni impahla yePU? Yimathiriyeli yepolymer eguquguqukayo, ephezulu yokusebenza esetyenziswa kakhulu kumashishini ahlukeneyo. Nokuba ikwimpahla, ulwakhiwo, iimoto, okanye ukhuseleko lokusingqongileyo, iPU iyathandwa ngenxa yeempawu zayo ezintle zephysicochemical. Ngokuqhubela phambili kwetekhnoloji kunye nokuphuculwa kweemfuno zokusingqongileyo, umda wesicelo kunye nenqanaba lobugcisa bezinto ze-PU ziya kuqhubeka nokwandisa nokuphucula.