Yintoni ufele lwePU? Ingaba singayahlula njani i-PU yethwathwa kokwenyani?

...I-PU yesikhumba yinto eyenziwe ngumntu. Sisikhumba sokwenziwa esikholisa ukuba nenkangeleko kunye nokuvakala kwesikhumba sokwenyani, kodwa singabizi mali ininzi, asihlali ixesha elide, kwaye sisenokuba nemichiza. ...
Isikhumba se-PU asilothwathwa lokwenyani. Isikhumba sePU luhlobo lwesikhumba sokwenziwa. Yenziwe ngemathiriyeli yefibre yeekhemikhali, ngelixa ufele lokwenyani lwenziwa kwaye lucutshungulwa ngofele lwesilwanyana. Isikhumba sokwenyani esikhankanywe kwimarike ngokuqhelekileyo ngumaleko wokuqala wesikhumba kunye nowesibini wesikhumba.
Isikhumba se-PU, igama elipheleleyo lesikhumba se-polyurethane, sisixhobo sokwenziwa okwenziwe ngokufaka i-polymer coating yokwenziwa kumphezulu wemicu yezilwanyana. Ezi zambatho zihlala ziquka i-polyurethane. Isikhumba sePU sinokumelana okugqwesileyo kokunxiba, ukuphefumla, ukumelana nokwaluphala kunye nokuguquguquka. Impembelelo yembonakalo ifana kakhulu nesikhumba sokwenyani, kwaye ibhetele ngakumbi kunesikhumba sendalo kwezinye iipropathi ezibonakalayo. Nangona kunjalo, xa kuthelekiswa nesikhumba sokwenyani, i-PU yesikhumba inomahluko othile wokuqina, ukugcinwa kunye nokukhuselwa kwendalo.
Senziwa njani ufele lwePU? Igama elipheleleyo le-PU yesikhumba yi-polyurethane yesikhumba. Yenziwe ngokufaka i-polyurethane resin kwilaphu okanye ilaphu elingalukwanga, kwaye emva koko kuqhutywe iinkqubo ezifana nokufudumeza kunye ne-embossing ukuyenza ibe nemibala eyahlukeneyo, ukuthungwa kunye nobukhulu. Isikhumba sePU sinokuxelisa imbonakalo kunye nokuziva kweentlobo ezahlukeneyo zesikhumba, njengesikhumba senkomo, iigusha, iihagu, njl.

Ziziphi iingenelo ze-PU ngesikhumba? Okokuqala, isikhumba sePU silula kwaye asiyi mthwalo ezinyaweni. Okwesibini, i-PU yesikhumba iyakwazi ukunxiba kwaye ayilulanga ukukrweleka okanye yonakaliswe. Okwesithathu, iPU yesikhumba kulula ukuyicoca, yisule nje ngelaphu elimanzi. Okokugqibela, isikhumba sePU sinobuhlobo ngakumbi kokusingqongileyo kwaye asiyi kubangela ingozi okanye inkunkuma kwizilwanyana.

Ke, zeziphi izinto ezingeloncedo ngesikhumba sePU? Okokuqala, i-PU yesikhumba ayiphefumli, eyenza iinyawo zibile okanye zinuke lula. Okwesibini, i-PU yesikhumba ayichasananga nobushushu obuphezulu kwaye ixhomekeke kwi-deformation okanye ukuguga. Okwesithathu, i-PU yesikhumba ayithambile kwaye ikhululekile ngokwaneleyo, kwaye ayinayo ukuqina kunye nokulingana kwesikhumba sokwenyani. Okokugqibela, i-PU yesikhumba ayiphezulu kwaye ishushu ngokwaneleyo, kwaye ayinayo iglosi kunye nokuthungwa kwesikhumba sokwenyani.
Iindlela zokwahlula ufele lwePU kwisikhumba sokwenyani ziquka:

Umthombo kunye nezithako: Ulusu lokwenyani luphuma kulusu lwesilwanyana, kwaye emva kolusu kunye nezinye iinkqubo, lunokwakheka kwendalo kunye nochuku. Isikhumba se-PU sisikhumba sokwenziwa, kunye ne-polyurethane resin njengeyona nto iphambili, eyenziwe ngokusabela kweekhemikhali, ngokumelana nokunxiba kakuhle, ukuxhathisa i-crease kunye nokumelana nokuguga.
Imbonakalo kunye nokuchukumisa: Isikhumba sokwenyani sibonelela ngokuchukumisa kwendalo kunye nokwenyani kunye nokwakheka kwendalo okwahlukileyo. Nangona i-PU yesikhumba inokuxelisa ukuthungwa kunye nokuchukumisa kwesikhumba sokwenyani, isajongeka njengeyenziweyo iyonke. Isikhumba sangempela sinemigca ecacileyo, kwaye isiqwenga ngasinye sihluke. Imigca yesikhumba ye-PU imnyama ngakumbi kwaye i-monotonous. Ulusu lokwenyani luvakala luthambile kwaye lunwebeka, luthambile kwaye lugudile. Isikhumba se-PU siziva sibuthathaka kwaye sine-astringent encinci.

Ukuqina: Ulusu lokwenyani luhlala luhlala ixesha elide, lunokuqina okuphezulu kunye nokunwebeka, kwaye luyakwazi ukumelana neempembelelo zangaphandle kunye nokukhuhlana. Nangona i-PU yesikhumba inokumelana nokunxiba kakuhle, inokuba nokuguga, ukuqhekeka kunye nezinye iingxaki emva kokusetyenziswa kwexesha elide.
Ukugcinwa kunye nokunyamekela: Ulusu lokwenyani lufuna ukugcinwa kunye nokunyamekela rhoqo, kwaye ii-agent ezikhethekileyo zesikhumba zisetyenziselwa ukucoca, ukuthambisa kunye nokukhusela amanzi. Isikhumba se-PU kulula ukuyikhathalela, sula nje ngelaphu elimanzi.
Ukhuseleko lokusingqongileyo: Ufele lokwenyani luphuma eluswini lwesilwanyana, kwaye kukho inkunkuma encinci kunye nongcoliseko kwinkqubo yalo yokuvelisa. Njengesikhumba sokwenziwa, ufele lwePU lunokubangela ungcoliseko oluthile lokusingqongileyo kwinkqubo yalo yokuvelisa.
Malunga nevumba: Ufele lokwenyani lunevumba eliqhelekileyo lesikhumba, kwaye liya linuka ngakumbi njengoko ixesha lihamba. Isikhumba sePU siya kuba nevumba elinamandla leplastiki. Isikhumba sangempela siya kuncipha kwaye sivumba njengeenwele ezivuthayo xa zidibana namadangatye. Isikhumba se-PU siya kunyibilika kwaye sivumba njengeplastiki evuthayo xa idibana namadangatye.
Ukusetyenziswa kwezihlandlo ezahlukeneyo

Ukunxiba kwansuku zonke: Kwiimveliso zesikhumba zokugqoka imihla ngemihla, ezifana nezicathulo kunye neengxowa zezandla, abathengi banokukhetha ngokweemfuno zabo kunye nohlahlo lwabiwo-mali. Ukuba uphishekela intuthuzelo kunye nokuphefumla, isikhumba sangempela lukhetho olungcono; ukuba uhlawula ingqalelo engakumbi kwixabiso kunye nokubonakala kweyantlukwano, isikhumba sePU sikwalukhetho oluhle.

Izihlandlo ezikhethekileyo: Kwezinye iimeko ezikhethekileyo, ezifana neentlanganiso zoshishino, izidlo ezisesikweni, njl. njl., iimveliso zesikhumba zangempela zihlala zibonisa ubuhle kunye nesimo esinesidima. Kwezinye iimeko eziqhelekileyo, ezinje ngemidlalo yangaphandle, ukuhamba, njl., iimveliso zesikhumba zePU zithandwa ngenxa yokukhanya kunye nokuqina kwazo.
Isishwankathelo, isikhumba sePU kunye nesikhumba sokwenyani ngasinye sineempawu zabo kunye neemeko ezisebenzayo. Abathengi kufuneka benze ukhetho olusekelwe kwiimfuno zabo kunye nohlahlo lwabiwo-mali xa bethenga.