Iyini i-PU?

I. Isingeniso se-PU

I-PU, noma i-polyurethane, iyimpahla yokwenziwa equkethe ikakhulukazi i-polyurethane. Isikhumba sokwenziwa se-PU siyinto engokoqobo yesikhumba enezakhiwo ezingcono zomzimba nokuqina kunesikhumba semvelo.

Isikhumba sokwenziwa kwe-PU sinezinhlobonhlobo zezicelo, okubandakanya ukukhiqizwa kwezihlalo zezimoto, osofa, izikhwama, izicathulo, nezingubo, phakathi kokunye. Iyathandeka ngobuhle, inethezekile, kulula ukuyihlanza nokuyinakekela, futhi inciphisa isidingo sesikhumba sesilwane, ngaleyo ndlela ihlangabezane nezidingo zemvelo ezivimbela unya lwezilwane.

II. PU Material Analysis

1. Ukwakheka

Ingxenye eyinhloko yesikhumba sokwenziwa kwe-PU yi-polyurethane, eyakhiwe ngokusebenzisana kwe-polyether noma i-polyester ene-isocyanate. Ngaphezu kwalokho, isikhumba sokwenziwa se-PU siqukethe izinto zokugcwalisa, ama-plasticizers, ama-pigments, nama-agent asizayo.

2. Ukubukeka

Isikhumba sokwenziwa se-PU sicebile ngokuthungwa nombala, futhi singalingisa amaphethini esikhumba ahlukahlukene njengengwenya, inyoka, nezikali zezinhlanzi ukuze sihlangabezane nezidingo zemikhiqizo ehlukene.

3. Izakhiwo Zomzimba

Isikhumba sokwenziwa se-PU sinezinto ezibonakalayo ezinhle kakhulu ezifana namandla aqinile, ukumelana nokugqoka, ukumelana namanzi, nokuguquguquka. Kulula futhi ukuyihlanza nokuyinakekela kunesikhumba semvelo, okuyenza ihlale isikhathi eside.

4. Inani Lokusebenza

Uma kuqhathaniswa nesikhumba semvelo, isikhumba sokwenziwa se-PU sinezinzuzo ezithile njengezindleko eziphansi, izindleko zokukhiqiza eziphansi, futhi asidingi isikhumba sesilwane, okusenza sibe ukukhetha okusebenzayo empilweni yesimanje yasedolobheni.

Sengiphetha, isikhumba sokwenziwa se-PU siwukuthatha isikhundla sekhwalithi ephezulu esiziqhayisa ngobuhle, ukusebenza kwekhwalithi ephezulu, kanye nentengo enengqondo, okuyenza ibe inketho ethandwayo emakethe. Njengoba ukuthuthuka kobuchwepheshe kanye nezidingo zemakethe zishintsha, isikhumba sokwenziwa kwe-PU nakanjani sizoba nezinhlelo eziningi ngokuzayo emikhakheni efana nezimoto, ifenisha, izingubo zokugqoka, nezikhwama, ukusho ezimbalwa.