Ukugoba Ukuhlolwa Nokunamathela kwe-FBE powder coating

Ukunamathela kwe I-FBE powder coating

Umhloli wenkomishi usetshenziswa ngokuyinhloko ukucacisa ukunamathela kwe-FBE powder coating, futhi i-Fig.7 ibonisa isimiso sokuhlola somhloli wenkomishi. Ikhanda lomhloli wenkomishi liyindilinga, lisunduza ingemuva lamaphaneli amboziwe ukuze kuhlolwe ukuthi ifilimu ephozithivu iqhekekile yini noma ihlukanisiwe ne-substrate. I-Fig.8 ingumphumela wokuhlolwa kwenkomishi we-epoxy powder coating. Kungabonakala ukuthi i-FBE powder coatings engagcwaliswanga ngama-prepolymers e-CTBN-EP anemifantu emincane ebonakalayo (I-Fig. 8 (1)), kuyilapho izigqoko zigcwele ama-prepolymers e-CTBN-EP (Fig. 8 (2-3)) ayinayo imifantu ebonakalayo, ekhombisa ukunamathela okuhle nokuqina.

Imelana nokuhlolwa kokugoba kwe-FBE powder coatings

I-Fig.9 ibonisa ukumelana nemiphumela yokuhlolwa egobayo yezinhlobo ezintathu ze-FBE powder coatings. Ukumelana nokugoba kwe-FBE powder coatings ngaphandle kokugcwalisa i-CTBN-EP prepolymers impofu (I-Fig.9 (1)), futhi kutholakala into yokuhluleka okuhlangene. Lapho ama-prepolymers e-CTBN-EP engezwa ku-powder coating, ukumelana nokugoba kwe-FBE powder coatings kuthuthukiswa kakhulu ngokuqukethwe okwandisiwe kwe-prepolymers ye-CTBN-EP (Fig.9 (2-3)), futhi akukho mkhuba wokuhluleka okuhlangene otholakalayo. , okubonisa ukumelana okuphezulu nokugoba.

Ukuhlolwa kwesifutho sikasawoti sezingubo zokugqoka

Ukumelana nokugqwala kwezingubo zokugqoka kuhlolwa ngokudalula okunamathelayo emoyeni wenkungu kasawoti okhiqizwe ngokufafaza isixazululo seNaCl esingu-5wt% esingu-35 ± 2 °C ngamahora angu-3000 ngokuhambisana nencazelo ye-ISO 14655:1999. Ngemuva kokususwa ekamelweni lenkungu kasawoti, wonke amasampula ahlanjululwa ngamanzi a-distilled ukuze asuse noma yiziphi izinsalela, ukugqwala kokugqoka kuyabonwa. Kungabonakala ku-Fig.10, ngemva kokuba izigqoko zigcwaliswe ngama-prepolymers e-CTBNEP (Fig.10b), abukho ubufakazi bokugqwala, futhi ama-specimens akhululekile, okubonisa ukumelana nokubola kwezingubo ezigcwele ama-prepolymers e-CTBN EP. ingahlangabezana nezidingo zezinga.

Ukumelana nokugqwala kwe-organic coating ngaphandle kweziphambeko kuncike kakhulu ezintweni ezivimbelayo, okungukuthi, ukuthi kunciphisa kanjani ukusakazeka komswakama nama-ion abolayo ngefilimu. Phakathi kwamapharamitha afaka isandla ezakhiweni zokuvimbela ukuhlasela kwe-substrate yensimbi engaphansi. I-coating eduze nendawo engenalutho idala ungqimba oludlulayo ku-substrate oluvimbela ukugqwala okuqhubekayo. Ngakho-ke, ingakwazi ukuthwebula ama-ion (mhlawumbe i-Cl−) kalula ukuze yakhe i-polymer ehlanganisiwe.