Mabuɗin Abubuwa Uku Da Suke Shafe Maganin Adhesive

Maganin warkarwa na adhesives wani tsari ne wanda ke tasowa da haɓaka kaddarorin kamar ƙarfin haɗin gwiwa ta hanyar halayen sinadarai (polymerization da crosslinking). Warware shine muhimmin mataki don cimma kyakkyawan aikin haɗin gwiwa; Za'a iya samun iyakar ƙarfin haɗin kai kawai idan an gama warkewa. Dangane da lokacin warkewa, an kasu kashi uku: waraka ta farko, waraka ta farko da bayan bayanta.

Maganin farko yana nufin bayan ɗan lokaci a ƙayyadadden zafin jiki, manne yana samun ɗan ƙarfi, samansa ya yi tauri kuma bai daɗe ba, amma bai gama warkewa ba tukuna.

Magani na asali yana nufin bayan ƙarin lokaci ya wuce, yawancin ƙungiyoyi masu amsawa suna shiga cikin halayen sinadarai kuma su kai wani matakin haɗin kai.

Post-wararwa na nufin kula da sassan da aka haɗa bayan ainihin magani don haɓaka aikin haɗin gwiwa ko biyan buƙatun tsari. Yawancin lokaci muna ajiye su a ƙayyadadden zafin jiki na ɗan lokaci. Wannan ƙarin matakin yana kammala warkewa, yana haɓaka matakin warkewa, yana kawar da damuwa na ciki da kyau kuma yana sa haɗin gwiwa ya fi ƙarfi.

Don samun manne mai kyau-mai warkewar manne, aikin dole ne ya faru a ƙarƙashin ingantattun yanayi. Tsarin warkewa na adhesives yana rinjayar ingancin haɗin gwiwa sosai. Akwai sigogi na asali guda uku don warkewa: zazzabi, matsa lamba da lokaci. Wadannan abubuwa guda uku suna da babban tasiri kan yadda mannen abu ke warkewa.

Manya-manyan Abubuwa Uku da Suke Shafe Maganin Adhesive

1. Maganin zafin jiki ɗaya ne daga cikin maɓalli na maɓalli don maganin manne. Idan zafin jiki ya yi girma sosai, manne zai gudana cikin sauƙi ko kuma mannen ɗin zai yi karyewa, yana rage ƙarfin haɗin gwiwa. Idan zafin jiki ya yi ƙasa sosai, ƙwayoyin kayan tushe ba za su iya motsawa cikin yardar kaina ba. Wannan yana haifar da ƙarancin haɗin haɗin haɗin gwiwa da rashin cikakkiyar magani. Don haka dole ne mu kula da zafin jiki sosai yayin warkewa, tunda kowane manne yana da nasa yanayin zafin warkewa.

2. Magance matsa lamba yana nufin amfani da wani matsa lamba a lokacin warkewa don taimakawa manne Layer haɗi da kyau tare da abubuwan da aka haɗa da kuma tabbatar da inganci mai kyau, kuma daban-daban adhesives suna buƙatar matsa lamba daban-daban wanda za'a iya raba su zuwa nau'i uku: matsa lamba kawai yana amfani da nauyin abubuwan da aka ɗaure ba tare da ƙarin matsin lamba ba, dace da manne epoxy, α - cyanoacrylate manne, na biyu-ƙarni acrylic manne, unsaturated polyester manne da polyester manne kawai; matsa lamba na 0.1 ~ 0.3 MPa ya shafi sauran ƙarfi matsa lamba na 0.3 ~ 0.5 MPa shine don fim, foda, tube, pellet adhesives da zafi narke manne, kuma mafi girma matsa lamba na iya inganta su wettability.

3. Lokacin warkewa yana nufin lokacin da ake buƙata don cikakken haɗin gwiwa ƙarƙashin ƙayyadadden zafin jiki da matsa lamba. Manne daban-daban suna da saurin warkewa daban-daban: α-cyanoacrylate manne da zafi narke manne magani nan take; dakin - saurin zafi - maganin epoxy manne da na biyu - manne acrylic ƙarni yana ɗaukar sa'o'i da yawa; epoxy polyamide manne yana buƙatar kwanaki da yawa don warkewa sosai. Bayan haka, lokacin warkewa yana shafar zafin jiki da matsa lamba. Mafi girman zafin jiki yana rage lokacin warkewa, yayin da ƙarancin zafin jiki yana faɗaɗa shi sosai, kuma wasu manne bazai iya warkewa na kwanaki idan an kiyaye shi ƙasa da zafin jiki.