Izinto Ezithinta Amandla Okunamathela Okunamathelayo
- ukuqina komhlaba
Lapho izinto ezinamathelayo zisakaza ngokuphelele ingaphezulu lezinto ezibonakalayo, ukuqina kwendawo kusiza ukuthuthukisa ukusebenza kokusabalalisa kwezinamathiselo futhi kukhulisa ukuminyana kwezindawo ezixhumene phakathi kokunamathela nezinto ezibonakalayo, lokhu kuzothuthukisa amandla okubopha. Ngokuphambene nalokho, uma okunamathelayo kuhluleka ukusabalalisa izinto ngendlela efanele, ukuqina kwendawo kuzonciphisa amandla okubopha.
- Ukwelashwa kwendawo
Ukulungiswa kwendawo ngaphambi kokuhlanganisa kuyisihluthulelo sokuhlanganisa ngempumelelo. Ihlose ukuzuza amalunga aqinile futhi aqinile. Ngenxa yobukhona bezendlalelo zomngcele ezibuthakathaka ezakhiwe izendlalelo ze-oxide ezifana nokugqwala, izendlalelo ze-chrome plating , izendlalelo ze-phosphating, izinto ezikhululayo, njll. ezintweni ezihlanganisayo, ukuphathwa okungaphezulu kwe-adherent kuzothinta amandla okubopha. Isibonelo, izindawo ezingaphezulu ze-polyethylene zingelashwa nge-oxidation eshisayo ye-chromic acid ukuze kuthuthukiswe amandla okubopha.
- Ngena
Ngemuva kokubopha, okuhlangene kuvame ukuthinteka emvelweni, ama-molecule amancane njengamanzi noma ama-solvents angangena kungqimba lweglue. Isibonelo, ezimeni ezimanzi noma ngaphansi kwamanzi, ama-molecule amanzi angena kuglue; kuma-solvents, ama-athomu enza okufanayo. Lawa mamolekyuli aqala abangele ungqimba lweglue ukuthi lushintshe uhlobo lwawo, bese lufinyelela ukuxhumana phakathi kweglue nengaphezulu. Lokhu kuzonciphisa isibopho, ekugcineni kubangele ukwehluleka. Ukungena akuqali nje ukusuka emaphethelweni ongqimba lweglue. Uma into eboshiweyo inezimbotshana, ama-molecule amancane angangena ngezikhala zawo, izimbotshana, noma imifantu, bese efinyelela kusixhumi esibonakalayo futhi ehlise amandla okubopha. Lokhu kungena akunciphisi nje kuphela amandla angokomzimba welunga kodwa futhi kungabangela izinguquko zamakhemikhali esixhumi esibonakalayo, njengokugqwala, okwenza isibopho singabi namsebenzi ngokuphelele.
- Ukunyakaza
Izinto eziboshiwe ziqukethe ama-plasticizers, njenge-PVC. Njengoba lawa ma-molecule amancane engahlangani kahle nama-polymer molecule, aphuma kalula kusuka endaweni yezinto ezibonakalayo noma ekuxhumaneni kwe-bonding. Uma ama-molecule amancane athuthiwe ehlala ndawonye kusixhumi esibonakalayo, azomisa okunamathelayo ekunamatheleni kokokusebenza, okwenza ibhondi ihluleke.
- Ingcindezi
Uma unamathela, cindezela ingcindezi ezindaweni ezingaphezulu. Lokhu kusiza ingcina ukuthi igcwalise izimbobo ezincane kokubalulekile kalula, ngisho nezimbobo ezijulile namashubhu amancane, futhi kunciphise izitikha ezimbi. Kumaglue okuhlanganisayo abuthaka, ukucindezela kuzowenza aphephezeke kakhulu futhi kungashiyi ingcina eyanele. Ngakho-ke linda kuze kube yilapho ingcina isiba namandla engeziwe ekubopheni ngaphambi kokucindezela. Lokhu kuphinda kuphushe umoya ngaphandle kwento futhi kunciphisa amabhamuza omoya endaweni yokunamathisela. Ukuze uthole ama-glues aqinile noma aqinile, ukucindezela kuyadingeka lapho unamathisela. Kulezi zimo, ngokuvamile udinga ukuwashisa ngendlela efanele ukuze uwenze abe mncane noma abe uketshezi. Isibonelo, ukwenza insulating pressing layer kwenziwa ngaphansi kokushisa nokucindezela. Ukuze uthole isibopho esiqinile, sebenzisa ingcindezi ehlukene yamaglue ahlukene. Futhi ngokuvamile, sebenzisa ukucindezela okuphezulu kuma-glues aqinile noma aminyene, kanye nokucindezela okuphansi kwamaglue amancane.
- Ubukhulu bongqimba lweglue
Izendlalelo zeglue eziwugqinsi zithola kalula amabhamuza omoya, amaphutha kanye nokunqamuka kwangaphambi kwesikhathi, ngakho-ke kufanele wenze ungqimba lweglue lube mncane ngangokunokwenzeka ukuze uthole isibopho esiqinile. Futhi, lapho izingqimba zeglue eziwugqinsi zithola ukushisa, ukwanda kwazo kudala ukucindezeleka kokushisa okwengeziwe endaweni ehlangene, okwenza ukuhlukana kwamalunga kube lula. Ukucindezeleka emalungeni angempela kuyinkimbinkimbi, kuhlanganise nokucindezeleka kwe-shear, ukucindezeleka kwekhasi kanye nokucindezeleka okuphindaphindiwe. Okokuqala, ingcindezi ye-shear: lapho kusetshenziswa amandla okudonsa phakathi nendawo, ingcindezi iyakhula ekugcineni kwesibopho. Ngaphandle kwe-shear force, kukhona futhi amandla okudonsa eduze kwejoyinti kanye namandla okudabula phakathi kwelunga. Lapho ilunga lingaphansi kwengcindezi yokugunda, lapho ilunga liqina kakhulu, ilunga liqina. Okwesibili, ukucindezelwa kwekhasi: lokhu kwenzeka lapho into enamathiselwe ithambile. Kokubili amandla okudonsa nawokugunda asebenza ekuhlanganyeleni, futhi wonke amandla agxila ku-glue-surface yezinto ezibonakalayo, ngakho ilunga liphuka kalula kakhulu. Ngenxa yokuthi ukucindezeleka kwepeel kulimaza kakhulu, kufanele ugweme imiklamo ehlangene eyakhayo lapho uklama. Okwesithathu, ukucindezeleka okuphindaphindiwe: i-glue ekuhlanganyeleni kancane kancane iguga ngenxa yokucindezeleka okuphindaphindiwe futhi iphuka emazingeni aphansi kakhulu kunokucindezeleka okujwayelekile okumile. Amaglue aqinile futhi anwebekayo, njengamanye amarabha, aphatha kahle ingcindezi ephindaphindiwe.
- Ukucindezeleka kwangaphakathi
Okokuqala, ukucindezeleka kokuncipha: Uma i-glue iphulukisa, iyancipha ivolumu ngenxa yokuhwamuka, ukupholisa kanye nokusabela kwamakhemikhali, okubangela ukucindezeleka kokuncipha. Lapho amandla okuncipha eqinile kunamandla okunamathela, amandla abonakalayo esibopho azokwehla kakhulu. Futhi, ukusatshalaliswa kokucindezeleka okungalingani emaphethelweni ebhondi noma izikhala ku-glue kubangela ukugxila kokucindezeleka, okwandisa ithuba lokuqhekeka kwakhe. Ama-crystalline glue ashwabana kakhulu lapho ephulukiswa ngenxa yokucwebezela, okudala nokucindezeleka kwangaphakathi elunga. Uma ungeza inani elithile lezinto ze-rubbery ezingaba yikristalu noma ziguqule usayizi wekristalu, unganciphisa ukucindezeleka kwangaphakathi. Ukwengeza ama-tougheners kuma-thermosetting resin glues kuyisibonelo esihle kakhulu. Isibonelo, kumaglues e-phenolic-acetal, lapho okuqukethwe kwe-acetal kungaphansi kuka-40%, ilunga liba nokuhluleka kokusebenzelana; uma ingaphezu kuka-40%, inokwehluleka okuhlangene, futhi amandla ebhondi akhula kakhulu. Okwesibili, ukucindezeleka okushisayo: Lapho inhlaka encibilikisiwe iphola futhi yelapheka emazingeni okushisa aphezulu, incipha ngomthamo. Isibopho siyibambe endaweni, okudala ingcindezi yangaphakathi kusixhumi esibonakalayo. Uma amaketanga amangqamuzana ekwazi ukushelela edlula elinye, ingcindezi yangaphakathi izophela. Izici eziyinhloko ezithinta ukucindezeleka okushisayo yi-coefficient yokwandisa ukushisa, izinga lokushisa legumbi, umehluko wokushisa kanye nokwehluka kokuqina. Ukuze unciphise ingcindezi yokushisa ebangelwa ama-coefficients ahlukene okwandisa ukushisa, kufanele wenze i-coefficient yokwandisa ukushisa kweglue isondele kulokho okunamathiselwe. Ukwengeza ama-fillers kuyindlela enhle-ungangeza impushana yezinto ezifanayo, noma imicu kanye nempushana yezinye izinto.
Isikhathi sokuthumela: 2026-06-01 10:00:41