Dalilai da magani na matalauta adhesion na UV curing fenti fesa fim

UV curing Paint wani nau'in fenti ne na kare muhalli kore, wanda ke da halaye na nuna gaskiya, babban taurin da juriya.An yadu amfani da filastik ko karfe substrate man fesa tsari.Babban abin al'ajabi wanda ke shafar ingancin shafi da yawan amfanin ƙasa a cikin feshin UV shine faɗuwar fenti, wato, mannewa tsakanin fenti na warkar da UV da substrate ba shi da kyau.Sa'an nan kuma za mu bincika dalilai da mafita na wuya adhesion daga bangarori biyu na UV fenti da spraying substrate.

Dalilan da ya sa UV curing Paint yana da wahala a manne da substrate:

Daga nazarin UV curing fenti, sakamakon UV shafi a kan substrate yana da rauni cikin sharuddan shiga.Idan akai la'akari da wasan kwaikwayon bayan warkewa, danko na ƙananan nauyin guduro tsarin yana ƙaruwa kuma yawan ruwa yana raguwa, don haka wetting da shigar da substrate bai isa ba.Bugu da ƙari kuma, ƙarar ƙarar fenti na UV yayin warkewa da lokacin saurin amsawa abubuwa ne guda biyu.Tsohon zai haifar da bambanci a cikin nakasawa tsakanin sutura da substrate, don haka haifar da damuwa tsakanin sutura;Ƙarshen shine saboda saurin amsawa, wanda zai haifar da rashin daidaituwa na tsarin tsarin fenti UV.

Daga hangen nesa na substrate na fenti UV, abu na farko da za a fahimta shine rawar mannewa.Ƙarfin kasancewarsa yana ƙayyade ko fenti da substrate na iya samun mannewa don samar da ingantaccen shafi.Don haka a nan dole ne mu faɗi tasirin polarity na substrate, crystallinity, makamashi mai ƙarfi da santsi akan mannewar ƙasa.Ƙananan ƙarancin polarity ko polarity, kamar filastik PP, wanda ke da wahalar mai, babban crystallinity da ƙarancin makamashi, irin su PA nailan substrate, yayin da santsi ya fi shahara a cikin bakin karfe.Sabili da haka, tsarin kwayoyin halitta da kaddarorin substrate kuma suna da babban tasiri akan mannewa.Sabili da haka, lokacin da za'a iya daidaita fenti na UV, mabuɗin don magance matsalar rashin daidaituwa na fenti UV shine inganta mannewa tsakanin substrate da fenti UV.

Hanyoyi don haɓaka mannewa tsakanin murfin fenti UV da substrate:

A cikin hanyar warware mannewar UV curing fenti fesa a kan filastik ko karfe surface, wani Layer na a tsaye fenti da aka fesa a saman da substrate Sichuan m magani wakili ne mai ingantacciyar bayani don inganta manne tsakanin substrate da UV shafi. .Da fari dai, ma'aikacin jiyya na manne zai iya jika madaidaicin.Abu na biyu, ma'aikacin jiyya ya ƙunshi hydrogen bonded free radicals tare da polar kungiyoyin irin su hydroxyl na substrate, wanda ya sa fim mafi m.A lokaci guda kuma, wakili na mannewa da fenti na iya samar da haɗin gwiwar sinadarai, wanda zai haɗa saman saman tare da murfin UV, kuma ya ƙara haɓaka samuwar babban matakin mannewa tsakanin fentin UV da madaidaicin.