Iziphawu Ezinhle Zokutholakala Kukulinganiswa Nokungahlanganiswa
Isimiso sangaphandle se-Polyurethane esivela eChina kumagunya ephathekayo enegama eliqhutywe ngokuphelele emibhalo yezinhlelo zokuchithwa okwenzelwe ukugcina ukuhlanganwa okuphelele nezinhlelo ezahlukene ze-polyurethane ngemuva kokuthi kuhlonza ukuthi akukho kunjalo okungahlinzeki nokuchithwa. Lokhu kubaluleke kakhulu ukukhulula izinkinga ezikhethekile okungaba khona kuziphumo zomlando, isimo sesayizi, noma ubukhona besayizi bezigunya ezakhiwe ngendlela efanayo. Umshilo wokungenakho komlando walezi zisimiso singaphakathi kumagunya aphathelwayo angakhethwa ngempela angavamise ukuxhasana ne-isocyanates, polyols, izixhobo zokuxhasa, nezinye izinto zezinhlelo ze-polyurethane. Amathuthuka amadliwa nokuthuthukisa iqiniso lokuqhubeka ekuvavanyeni isimiso sangaphandle se-polyurethane esivela eChina kumagunya aphathekayo ngokulinganisa nezinhlelo ezintsha ze-polyurethane ukuqinisekisa ukuthi zihlanganwa futhi zenze izinkinga ezingekholo ngokuxhasana kwemithombo. Le minyango yokungenakho yokuxhasana iyaphakeme ngaphezu kokuhlanganwa okunjalo kuze kube yilokungcwalisa izici zesayizi esingcono sokuxhaseka, ukupaka, noma ukufaka izimpawu. Abakhi magunya aphathekayo bakhetha lokhu igunya xa bekha izinto ezidinga izinyathelo eziningi zokuphatha, ngoba isimiso sangaphandle asenza izizinda ezingahlinzeki nokuxhaseka kwezimpawu, izipaka, noma izixhobo zokuxhaseka. Uhlaziyo lwemithombo lukhombisa ukuthi isimiso sangaphandle se-polyurethane esivela eChina kumagunya aphathekayo akulayi endaweni yepolyurethane, akunakekeli iziphumo zokulaywa ezingaba yizizathu zokuguquka kwiziphumo zomlando ngexesha. Ukudizwa kwimolekyuli kukhathazeka ukuthi kungafaki izimpawu yesimiso sangaphandle esingcono esingaba yisizathu sezinkinga zokhokhelo emva kokwenza. Uhlaziyo oluphucuphucu oluthuthukile lukhombisa ukuthi umdwebo wemithombo ungcinezela ngokuphelele ngexesha lokwenza, lukhondisa ukuthi akukho zimpendulo ezenzekelayo xa kuthathwa isikhathi sokuxhasana nezinhlelo ze-polyurethane. Izinhlelo zokugcina ubumnandi ziqinisekisa ukuthi lezi zigunya ezakhiwe ngaleso simiso sihlanganisa nezimo zonke zezimali zokuphathakayo ngokuphathekayo, ukusebenza kwe-UV, nokusebenza ngexesha elide. Lokhu kuhlanganwa kuyaphakeme kuzinhlelo ezithile ze-polyurethane ezifakwe kuzo izici ezivikelwa kumlilo, izinto ezinokuxhasana, nezinhlelo ezinamandla ahluke-ahluke ezisetshenziswa kakhulu kumagunya aphathekayo. Ababhali bemisebenzi bakhonza lokhu ngokunikela indlela yokuthola, ngoba kusenzo kakhulu ukuthi kushintshwe isimiso sangaphandle xa kushintjiswa phakathi kwezigunya ezahlukene ze-polyurethane ngexesha lokusebenza.