Na'urorin rufe silicone masu sassa biyu suna da ƙarfi sosai, suna iya ɗaukar manyan kaya, kuma suna jure wa tsufa, gajiya, da tsatsa, kuma suna da aiki mai ɗorewa a cikin tsawon rayuwar da ake tsammani. Sun dace da manne waɗanda ke jure wa haɗin sassan tsarin. Ana amfani da shi galibi don haɗa ƙarfe, yumbu, robobi, roba, itace da sauran kayan iri ɗaya ko tsakanin nau'ikan kayan daban-daban, kuma suna iya maye gurbin wasu nau'ikan haɗin gargajiya kamar walda, riveting da bolting.
Ruwan rufewa na siliki muhimmin abu ne da ake amfani da shi a bangon labulen gilashi mai ɓoye ko kuma wanda aka ɓoye a ɓoye. Ta hanyar haɗa faranti da firam ɗin ƙarfe, yana iya jure wa iska da nauyin gilashin kai, wanda ke da alaƙa kai tsaye da dorewa da amincin ginin tsarin bangon labule. Ɗaya daga cikin mahimman hanyoyin aminci na bangon labulen gilashi.
Yana da rufin siffa mai tsari wanda ke da polysiloxane mai layi a matsayin babban kayan albarkatun ƙasa. A lokacin aikin warkarwa, wakilin haɗin gwiwa yana amsawa da polymer na tushe don samar da abu mai laushi tare da tsarin hanyar sadarwa mai girma uku. Saboda ƙarfin haɗin Si-O a cikin tsarin kwayoyin halitta na robar silicone yana da girma sosai a cikin haɗin sinadarai gama gari (Si-O takamaiman halayen jiki da sinadarai: tsawon haɗin 0.164±0.003nm, kuzarin rabuwar zafi 460.5J/mol. Ya fi C-O358J/mol, C-C304J/mol, Si-C318.2J/mol) girma sosai, idan aka kwatanta da sauran hatimin (kamar polyurethane, acrylic, polysulfide hatimin, da sauransu), juriyar UV da juriya Ikon tsufa na yanayi yana da ƙarfi, kuma ba zai iya kiyaye fashewa da lalacewa ba tsawon shekaru 30 a cikin yanayi daban-daban. Yana da juriyar ±50% ga nakasa da ƙaura a cikin kewayon zafin jiki mai faɗi. Duk da haka, tare da ƙaruwar amfani da silicone a cikin tsarin rufewa, matsaloli daban-daban za su bayyana a aikace-aikace masu amfani, kamar: haɗa barbashi da kuma ɗumamar sashi na B, rabuwa da rarraba sashi na B, matsi Ba za a iya matse farantin ƙasa ba ko kuma a juya manne, saurin fitar da manne na injin manne yana da jinkiri, manne na takardar malam buɗe ido yana da barbashi, lokacin bushewar saman yana da sauri ko jinkiri sosai, manne yana bayyana fata ko vulcanization, kuma "manne fure" yana bayyana yayin aikin yin manne. ", ba za a iya warkar da colloid akai-akai ba, hannaye masu manne bayan 'yan kwanaki na warkewa, taurin ba shi da kyau bayan warkewa, akwai ramuka masu kama da allura a saman haɗin gwiwa tare da substrate, kumfa iska sun makale a cikin manne silicone, rashin haɗin kai da substrate, rashin jituwa da kayan haɗi, da sauransu.
2. Binciken Tambayoyin da ake yawan yi game da manne silicone na Tsarin Abubuwa Biyu
Sashe na 2.1 B yana da tarin ƙwayoyin cuta da kuma ɗiga su
Idan taruwar ƙwayoyin halitta da kuma turɓayar ɓangaren B ta faru, akwai dalilai guda biyu: na farko shine wannan lamari ya faru a saman Layer kafin amfani, wanda hakan ya faru ne saboda rashin kyawun rufewa a cikin kunshin, kuma wakilin haɗin gwiwa ko wakilin haɗin gwiwa a cikin sashin B shine mahaɗin aiki, mai sauƙin kamuwa da danshi a cikin iska, ya kamata a mayar da wannan rukunin ga masana'anta. Na biyu shine cewa ana kashe injin yayin amfani, kuma tarɓa da turɓayar ƙwayoyin suna faruwa lokacin da aka sake kunna injin, wanda ke nuna cewa hatimin da ke tsakanin farantin matsi na injin manne da kayan roba ba shi da kyau, kuma ya kamata a tuntuɓi kayan aikin don magance matsalar.
2.2 Saurin injin manne yana da jinkiri
Idan aka yi amfani da samfurin a karon farko, saurin fitar da manne na injin manne yana da jinkiri sosai a lokacin aikin mannewa. Akwai dalilai guda uku masu yiwuwa: ⑴ bangaren A yana da ƙarancin ruwa, ⑵ farantin matsi ya yi girma sosai, kuma ⑶ matsin iska bai isa ba.
Idan aka tabbatar cewa shine dalili na farko ko na uku, za mu iya magance shi ta hanyar daidaita matsin lambar bindigar manne; idan aka tabbatar cewa shine dalili na biyu, yin odar ganga mai ma'auni mai dacewa zai iya magance matsalar. Idan saurin fitar da manne ya ragu yayin amfani da shi na yau da kullun, yana iya zama cewa an toshe tsakiyar haɗawa da allon matattarar. Da zarar an same shi, kayan aikin suna buƙatar a tsaftace su akan lokaci.
2.3 Lokacin ja yana da sauri ko jinkiri sosai
Lokacin karyewar manne na tsarin yana nufin lokacin da colloid ke ɗauka don canzawa daga manna zuwa jikin roba bayan an haɗa shi, kuma gabaɗaya ana gwada shi duk bayan minti 5. Akwai abubuwa uku da ke shafar bushewa da wargaza saman roba: (1) tasirin rabon abubuwan A da B, da sauransu; (2) zafin jiki da danshi (tasirin zafin jiki shine babban abu); (3) dabarar samfurin da kanta tana da lahani.
Mafita ga dalilin (1) shine a daidaita rabon. Ƙara rabon sashi na B zai iya rage lokacin shafawa da kuma sanya Layer ɗin manne ya yi tauri da karyewa; yayin da rage rabon wakili mai warkarwa zai tsawaita lokacin shafawa, Layer ɗin manne zai yi laushi, ƙarfin zai ƙaru kuma za a ƙara ƙarfi. rage.
Gabaɗaya, ana iya daidaita rabon ƙara na ɓangaren A:B tsakanin (9 ~ 13:1). Idan rabon ɓangaren B ya yi yawa, saurin amsawar zai yi sauri kuma lokacin karyewa zai yi gajarta. Idan amsawar ta yi sauri sosai, lokacin yankewa da dakatar da bindigar zai shafi. Idan ya yi jinkiri sosai, zai shafi lokacin bushewar colloid. Ana daidaita lokacin karyewa tsakanin mintuna 20 zuwa 60. Aikin colloid bayan wargazawa a cikin wannan kewayon rabo iri ɗaya ne. Bugu da ƙari, lokacin da zafin ginin ya yi yawa ko ƙasa da haka, za mu iya rage ko ƙara rabon ɓangaren B (mai warkarwa) yadda ya kamata, don cimma manufar daidaita lokacin bushewa da wargazawar saman colloid. Idan akwai matsala da samfurin da kansa, ana buƙatar maye gurbin samfurin.
2.4 "Mannen fure" ya bayyana a lokacin mannewa
Ana samar da danko na fure ne saboda cakuda colloids na sassan A/B marasa daidaito, kuma yana bayyana a matsayin farin layi na gida. Manyan dalilan sune: ⑴Bututun sashin B na injin manne ya toshe; ⑵Ba a daɗe da tsaftace mahaɗin da ke tsaye ba; ⑶Sikelin ya sako-sako kuma saurin fitar da manne bai daidaita ba; Ana iya magance shi ta hanyar tsaftace kayan aiki; saboda dalili (3), kuna buƙatar duba mai sarrafa daidaito kuma ku yi gyare-gyare masu dacewa.
2.5 Fatar colloid ko kuma fatsawa yayin aikin yin manne
Idan manne mai sassa biyu ya warke kaɗan yayin haɗawa, manne da bindigar manne ke samarwa zai bayyana yana bushewa ko kuma yana faɗuwa. Idan babu wata matsala a saurin mannewa da kuma fitar da manne, amma manne ɗin har yanzu yana da ɓawon burodi ko kuma yana da ɓawon burodi, yana iya zama cewa an daɗe ana kashe kayan aikin, ba a tsaftace bindigar manne ba ko kuma ba a tsaftace bindigar sosai ba, kuma ana buƙatar a wanke ɓawon burodi ko manne mai laushi. Gina bayan tsaftacewa.
2.6 Akwai kumfa na iska a cikin manne mai silicone
Gabaɗaya dai, colloid ɗin kansa ba shi da kumfa na iska, kuma kumfa na iska da ke cikin colloid ɗin zai iya gauraya da iska yayin jigilar kaya ko gini, kamar: ⑴Ba a tsaftace shaƙar ba lokacin da aka maye gurbin bututun roba; ⑵Ana matse abubuwan da ke cikin farantin bayan an saka su a kan injin. Ba a matse su ba, wanda ke haifar da rashin cikas ga na'urar. Saboda haka, ya kamata a cire kumfa sosai kafin a yi amfani da shi, kuma a yi amfani da injin manne yadda ya kamata yayin amfani da shi don tabbatar da rufewa da hana iska shiga.
2.7 Rashin mannewa mai kyau ga substrate
Sealant ba manne bane na duniya baki ɗaya, don haka ba za a iya tabbatar da cewa yana da alaƙa da dukkan substrates a aikace-aikace na zahiri ba. Tare da bambancin hanyoyin magance saman substrates da sabbin hanyoyin aiki, saurin haɗin gwiwa da tasirin haɗin manne da substrates suma sun bambanta.
Akwai nau'ikan lalacewa guda uku ga haɗin haɗin tsakanin manne na tsari da substrate. Ɗaya shine lalacewar haɗin gwiwa, wato, ƙarfin haɗin gwiwa > ƙarfin haɗin gwiwa; ɗayan kuma shine lalacewar haɗin gwiwa, wato, ƙarfin haɗin gwiwa < ƙarfin haɗin gwiwa. Yankin lalacewar haɗin gwiwa ƙasa da kashi 20% ko daidai yake da shi ya cancanta, kuma yankin lalacewar haɗin gwiwa sama da kashi 20% bai cancanta ba; yankin lalacewar haɗin gwiwa sama da kashi 20% abu ne da ba a so a aikace-aikace. Akwai dalilai shida masu zuwa da yasa manne na tsari bai manne da substrate ba:
⑴ Tsarin da kansa yana da wahalar haɗawa, kamar PP da PE. Saboda yawan kristal ɗinsu da ƙarancin tashin hankali a saman, ba za su iya samar da yaɗuwar sarkar kwayoyin halitta da haɗuwa da yawancin abubuwa ba, don haka ba za su iya samar da haɗin gwiwa mai ƙarfi a mahaɗin ba. Mannewa;
⑵ Tsarin haɗin samfurin yana da kunkuntar, kuma yana iya aiki ne kawai akan wasu ƙananan abubuwa;
⑶ Lokacin gyara bai isa ba. Yawanci, manne mai sassa biyu ya kamata a warke na tsawon akalla kwana 3, yayin da manne mai sassa ɗaya ya kamata a warke na tsawon kwana 7. Idan zafin jiki da danshi na yanayin gyara sun yi ƙasa, ya kamata a tsawaita lokacin gyara.
⑷ Rabon sassan A da B ba daidai ba ne. Lokacin amfani da samfuran sassa biyu, mai amfani dole ne ya bi ƙa'idodin da masana'anta ke buƙata don daidaita rabon manne na tushe da maganin warkarwa, in ba haka ba matsaloli na iya faruwa a farkon matakin warkarwa, ko kuma a matakin amfani na ƙarshe dangane da mannewa, juriya ga yanayi da dorewa. Tambaya;
⑸ Rashin tsaftace substrate kamar yadda ake buƙata. Tunda ƙura, datti da ƙazanta a saman substrate za su hana haɗin, ya kamata a tsaftace shi sosai kafin amfani da shi don tabbatar da cewa manne da substrate ɗin sun haɗu sosai.
⑹ Rashin amfani da primer kamar yadda ake buƙata. Ana amfani da primer don yin magani kafin a shafa a saman aluminum profile, wanda zai iya inganta juriyar ruwa da juriyar haɗin tare da rage lokacin haɗin. Saboda haka, a aikace-aikacen injiniya na ainihi, dole ne mu yi amfani da primer daidai kuma mu guji lalata shi da hanyoyin amfani da ba daidai ba ke haifarwa.
2.8 Rashin jituwa da kayan haɗi
Dalilin rashin jituwa da kayan haɗin shine cewa manne yana da amsawar jiki ko sinadarai tare da kayan haɗin da ke taɓawa, wanda ke haifar da haɗari kamar canza launin manne na tsari, rashin mannewa ga substrate, lalacewar aikin manne na tsari, da kuma rage tsawon rayuwar manne na tsari.
3. Kammalawa
Manna na silikon yana da ƙarfi mai yawa, kwanciyar hankali mai yawa, juriya mai kyau ga tsufa, juriya mai yawa ga zafin jiki da sauran kyawawan halaye, kuma ana amfani da shi sosai a cikin haɗin ginin bangon labule. Duk da haka, a aikace-aikace, saboda abubuwan ɗan adam da matsalolin kayan tushe da aka zaɓa (ba za a iya bin ƙa'idodin gini ba sosai), aikin manne na tsarin yana da matuƙar tasiri, har ma ya zama mara inganci. Saboda haka, ya kamata a duba gwajin dacewa da gwajin manne na gilashi, kayan aluminum da kayan haɗi kafin gini, kuma ya kamata a bi ƙa'idodin kowane mahaɗin sosai yayin aikin gini, don cimma tasirin manne na tsarin da kuma tabbatar da ingancin aikin.
Lokacin Saƙo: Nuwamba-30-2022