Ama-Adhesives wokufaka uphawu
Ukusebenza okuphezulu kwe-Deepmaterial okutywinwa kwezimboni kwengxenye eyodwa nezimbili kulula ukukusebenzisa futhi kuyatholakala ukuze kusetshenziswe izifakeli ezilula. Bahlinzeka ngezixazululo ezingabizi kakhulu zezinhlelo zokusebenza zobuchwepheshe obuphezulu. Imikhiqizo yethu yokuvala ihlanganisa ama-epoxies, ama-silicone, ama-polysulfides nama-polyurethanes. Zisebenza ngo-100% futhi azinazo izincibilikisi noma izihlambululi.
Uyini umehluko phakathi kwama-Adhesives & Sealants?
Ama-sealant angama-polymer anesakhiwo samangqamuzana esiqinile esingakuvumeli ukungena. Aqukethe ama-epoxies awoma ngokushesha akha isiphetho esihle. Izinamathiselo ziyisakhiwo esiyinkimbinkimbi kakhulu esiklanyelwe ukubamba nokubopha ezingeni lamaselula.
Ama-Adhesive vs. Sealants
- Ama-Sealant aklanyelwe ukuvala izikhala phakathi kwendawo futhi avimbele izinto ezinjengothuli, amanzi, noma ukungcola ukuthi zingangeni kuzo. Izinamatheliso ngokuvamile zenziwa ukwenza izindawo ezimbili zinamathele ndawonye ukuze izindawo ezingaphezulu zingakwazi ukuhlukaniswa.
- Ama-sealants anamandla aphansi kanye nobude/ukuguquguquka okuphezulu futhi awasetshenziselwa ukuhlanganisa izinto ezisetshenziswayo ngenkathi okunamathelayo kuhloselwe ukuhlanganisa izinto ezimbili ndawonye ngokunamathela.
- Ama-sealants awahlali enamandla okunamathela adingekayo ukuze kunamathele isikhathi eside futhi izinto ezinamathelayo azomi kahle uma zisetshenziswa ngaphandle.
- Ama-sealants anokuqina okufana nokunamathisela okuvumela ukugcwaliswa kwezikhala phakathi kwama-substrates futhi abe nokushwabana okuphansi ngemva kokufakwa. Izinamatheliso zisesimweni esiwuketshezi esiba siqine ngemva kokufakwa bese sisetshenziselwa ukuhlanganisa izinto ndawonye.
- I-Adhesive izonikeza umuzwa oqinile futhi oqinile futhi ibukeke ngokuphambene nama-sealant aphansi ngamandla futhi athambile kakhulu.
Ukuvalwa Okusebenzayo Ngezinamathiselo
Izigxivizo zinethonya elinamandla ekusebenzeni nasekuphileni isikhathi eside kokufakwa, okuhlanganisayo, nezingxenye. Nokho, ukunakwa kuvame ukunakwa kuphela uma behluleka. Nakuba ama-O-rings cishe kuyizimpawu ezisetshenziswa kakhulu futhi ezinye izinhlobo zezimpawu ezimile zikhona, ubuchwepheshe bokunamathisela obunama-gaskets obuwuketshezi kanye ne-seal bonding buvula izinketho ezengeziwe zokuvala okuthembekile.
Ukuvalwa Okusebenzayo Ngezinamathiselo
Izigxivizo zinethonya elinamandla ekusebenzeni nasekuphileni isikhathi eside kokufakwa, okuhlanganisayo, nezingxenye. Nokho, ukunakwa kuvame ukunakwa kuphela uma behluleka. Nakuba ama-O-rings cishe kuyizimpawu ezisetshenziswa kakhulu futhi ezinye izinhlobo zezimpawu ezimile zikhona, ubuchwepheshe bokunamathisela obunama-gaskets obuwuketshezi kanye ne-seal bonding buvula izinketho ezengeziwe zokuvala okuthembekile.
Emkhiqizweni wezimboni, izikhala ezihlangene phakathi kwezingxenye ngokuvamile zidinga ukuvalwa ukuze kuvinjelwe ukungena komoya, uthuli, amanzi, namakhemikhali anolaka. Lokhu kubaluleke kakhulu emikhakheni yezogesi, ezezimoto, ezobunjiniyela bemishini, nobunjiniyela bezinqubo. Izicelo ezijwayelekile zihlukene njengezimboni ezisetshenziswa kuzo. Ezinye izibonelo yizindlu zezingxenye ze-elekthronikhi, odonsa, futhi, vele, amasistimu a-fluidic.
Ngokwezinga elithile, izingxenye zingavalwa ngendlela yokwakha ngaphandle kwanoma yiluphi uphawu olwengeziwe. Kodwa-ke, ngokunyuka kwezidingo kungadingeka ukuthi kusetshenziswe uphawu oluhlukile .. Ebunjiniyela, lo msebenzi uvame ukubhekwa ngokuklama i-geometry yengxenye ukuze uphawu lwe-static lufakwe phakathi kwegebe elihlangene. Ngokuya ngezidingo ezishisayo, zamakhemikhali, nezomshini, izimpawu zezimboni ngokuvamile zihlanganisa irabha, ama-silicone, ama-thermoplastic elastomers, noma i-Teflon.
Kuthiwani ngeRubber?
Irabha iyinto esetshenziswa kakhulu kulezi zinhloso, futhi ukukhetha kwemikhiqizo eyenziwe ngenjoloba kunezinzuzo ezithile: ivala kahle kakhulu. Ukucindezelwa okujwayelekile okusethelwe irabha ye-nitrile ezimeni ezijwayelekile ze-100 °C/24h kungu-20 - 30 %. Ngaphezu kwalokho, lawa ma-rubber asezinzile futhi aqinile ngokokushisa, ngamakhemikhali, nangomshini, okubandakanya izindleko zempahla ephansi. Kodwa-ke, nazo zinezimo ezimbi, ikakhulukazi mayelana nokuhlanganiswa kwazo enqubweni yokukhiqiza.
Nge-geometry evala uphawu eyindilinga, ukungalungi kungenzeka kungabi nalutho futhi ama-O-rings azoba yisixazululo esinomnotho kakhulu. Endabeni yezintambo zokuvala noma amateyipu okuvala afana nalawo asetshenziselwa izindlu, ukukhiqiza okuphumelelayo (sekuvele) kuyinkimbinkimbi kakhulu. Zidinga ukubopha okungeziwe okwenziwa ngesandla endaweni yokuxhuma lapho iziphetho ezimbili zithintana khona, okusho isinyathelo esiqhubekayo futhi okungenzeka sidle isikhathi.
Izimo zenjoloba eziyinkimbinkimbi kakhulu zingakhiqizwa ngokushaya ngesibhakela noma nge-vulcanizing. Lokhu kuvumela izinqubo zokukhiqiza ezilula, kodwa lezi zisebenza kahle kuphela kumthamo ophezulu wokukhiqiza, njengoba isikhunta esibizayo somumo ngamunye kufanele sigcinwe esitokisini.
Ukuvala i-Gap nge-Thermoplastic Elastomers
Izigxivizo ezenziwe nge-thermoplastic elastomers (TPE) zinikeza enye indlela. Zisetshenziswa ngqo engxenyeni ngokubumba umjovo. Aqinile, amelana nokuhuzuka, futhi anamathela kahle kumapulasitiki obuchwepheshe afana ne-PA, i-PC, noma i-PBT, okwenza isivalo singavuzi. Ezingeni lokushisa lasekamelweni, i-TPE iziphatha njengama-elastomers akudala, kodwa ingxenye ye-thermoplastic ikhawulela izinga lokushisa libe ngu-80 - 100 °C, kanti ukuminyanisa isethi kuyanda emazingeni okushisa aphezulu. Ku-TPU esetshenziswa kabanzi, isethi yokucindezela icishe ibe ngu-80 % (100 °C/24 h), kwezinye izinhlobo ze-TPE amanani azungeze u-50 % angenzeka.
Inqubo yokujova ilula kunokuvuza, kodwa namanje ayincane, ikakhulukazi ngenxa yezindawo zokucubungula ezimaphakathi zama-TPU kanye nangenxa yokuthi ithuluzi liyadingeka kujometri ngayinye. Ukwengeza, umshini wokubumba umjovo wezingxenye eziningi uyadingeka ukuze ugweme ukufaka ingxenye futhi esinyathelweni senqubo eyengeziwe.
Okokuqala Liquid, Bese Kuqinile
Ngama-gaskets e-liquid izindleko ezinjalo zokutshala izimali azitholakali. Lezi zinhlobo ze-gasket zimelana nokugeleza, imikhiqizo enamathela kakhulu enamathelayo ekhishwa ngokuya ngobude nokuma okufunayo bese yelapha endaweni yayo yokufaka. Ukuguquguquka kwesicelo sabo kubenza bafanelekele izingxenye zejometri eziyinkimbinkimbi, ngisho nezintathu-ntathu. Enye inzuzo yama-gaskets awuketshezi uma kuqhathaniswa nama-gaskets aqinile ukuthi awaphumuli nje kancane eziqongweni ezimaholoholo, ngaleyo ndlela avale kangcono izindawo zamagagasi futhi avumele ukubekezelelana okuphezulu kokukhiqiza.
Uma kuqhathaniswa kwesinye isikhathi nenjoloba eyinkimbinkimbi noma izigxivizo ze-TPU, zibandakanya izinyathelo ezimbalwa zenqubo, ukunciphisa izikhathi zokusetha umshini, futhi zikhiqize ukwaliwa okuncane kunokusika ukufa. Izinqubo zokukhiqiza zingazenzakalela kalula, ngesistimu eyodwa kuphela edingekayo ukuze kukhiqizwe zonke izingxenye. Amaphutha angaba khona wokusabalalisa ebuhlalu bokuvala atholwa nge-fluorescence yokulawula ikhwalithi ye-optical inline. Njengoba kungasadingeki ukubamba inombolo enkulu yezimpawu ezitholakalayo, izindleko zokugcina aziyona inkinga.
Kuze kube manje, imikhiqizo ku-silicone noma i-polyurethane base ivame ukusetshenziselwa ama-gaskets aketshezi. Kodwa-ke, lezi zinhlelo ezinezingxenye ezimbili zilapha kancane futhi ngenxa yalokho zifaneleka kangcono izingxenye ezinkulu noma uchungechunge oluncane. Endabeni yochungechunge olukhulu, inqubo engeyona inkimbinkimbi futhi eguquguqukayo eyenziwe yenzeke ngama-gaskets ewuketshezi ngokuvamile ayikwazanga ukunxephezela ukonakala kwesivinini uma kuqhathaniswa ne-rubber noma i-TPU seals.
Kodwa-ke, isikhathi eside manje, ama-acrylates wengxenye eyodwa yokukhanya akhona emakethe, ebonisa amandla abo ikakhulukazi ochungechungeni olukhulu. Ukukhanya kwe-UV okunamandla aphezulu kuqinisekisa ukuthi i-adhesive ifinyelela amandla ayo okugcina phakathi nemizuzwana embalwa, ngaleyo ndlela ivumela izikhathi zomjikelezo omfushane kanye nokucubungula okuqondile kwezingxenye, okuyizici ezibalulekile zokufeza ivolumu yokukhiqiza ephezulu.
Izakhiwo ezinhle zokubuyisela isimo sezinto zokwakha ziqinisekisa ukuvalwa okuthembekile ngemva kokujoyina: isethi yokucindezela ephansi efika ku-10 % (85 °C, 24 h) ivumela ukuthi ziphinde zibuyisele izimo zazo zangempela lapho ingcindezi ingasekho. Izinguqulo eziningi ezomile endaweni zivumela ukuqaqa okuphindaphindiwe. Ukwengeza, ama-gaskets akhiwe endaweni asuselwa ku-acrylate ahlangabezana nezimfuneko ze-IP67, ngenxa yezakhiwo zawo zokuxosha amanzi. Ziyi-PWIS- kanye ne-solvent-free, enebanga lokushisa elisuka ku -40 ukuya ku-120 °C.
Ukubeka uphawu kanye nokubopha ku-One Go
Ukuhlanganiswa kwe-Seal kuyisixazululo esifanelekile uma uphawu luhloselwe ngokucacile ukuthi lungahlukaniseki. Lapha futhi, kungenzeka ukudala noma yikuphi ukuma nokusebenzisa i-fluorescence yokulawula ikhwalithi esemgqeni. Inzuzo eyengeziwe ukudluliswa kwamandla - ama-adhesives awagcini nje ngokuvala izingxenye kodwa azihlanganisa unomphela. Lokhu kuhumusha izidingo zesikhala ezincishisiwe. Izikulufu azisadingeki, okuvumela izindlu ezincane, ukwenziwa kancane kwama-assemblies, nezinyathelo ezimbalwa zokukhiqiza.
Kuzicelo zevolumu ephezulu, ama-acrylates okwelapha ukukhanya nama-epoxy resins afaneleka ikakhulukazi, kuye ngezidingo ezishisayo namakhemikhali. Ngenkathi ama-epoxy resins azinzile kancane ekushiseni, ama-acrylates ahlinzeka ngokuguquguquka okukhulu kanye nokwelapha ngokushesha. Ngaphezu kwalokho, izinguqulo ezimbili zokuphulukisa zikhona kuyo yomibili imindeni yomkhiqizo. Ukwelapha kuhhavini noma ngokuthintana nomswakama womoya, lezi zinhlobo zokunamathela ziqinisekisa ukuphambana okugcwele ngisho nasezindaweni ezinomthunzi.
Isiphetho
Izimpawu azizona izindandatho zenjoloba kuphela. Njengazo zonke izinto ezibonakalayo, ukwehluka kuye kwanda kakhulu. Ubuchwepheshe be-Bonding nama-gasket oketshezi okwelapha ukukhanya kanye nezixazululo ze-seal bonding kunikeza abasebenzisi izinketho ezintsha zokuthuthukisa umklamo wabo futhi bazuze kokubili izinqubo zokukhiqiza eziphumelelayo nezivumelana nezimo.
Ibhokisi Lolwazi: Isethi Yokucindezela
I-deformation ehlala njalo ibalulekile kuma-seal, njengoba uphawu lwe-flange lucindezelwa lube ugqinsi oluthile futhi lube nengcindezi ezindaweni ezivulekile. Le ngcindezi iyehla ngokuhamba kwesikhathi ngenxa yokonakala kwezinto zokuvala. Lapho i-deformation inamandla, amandla okucindezelayo ayanda futhi ngaleyo ndlela umphumela wokuvala uyancipha.
Lesi sici sivame ukuvezwa njengesethi yokucindezela. Ukunquma ukuminyanisa okusethwe ngokwe-DIN ISO 815 noma i-ASTM D 395, isampula ye-cylindrical icindezelwa ku-25 % (inani elivamile) bese ligcinwa isikhathi esithile ezingeni lokushisa elinikeziwe. Amanani ajwayelekile amahora angama-24 ku-100 °C noma ku-85 °C. Ngokuvamile ngemva kwemizuzu engu-30 ngemva kokukhululeka kwengcindezi, ukushuba kukalwa futhi ekamelweni lokushisa, kunquma ukuguquguquka okuhlala njalo. Lapho isethi yokuminyanisa iphansi, kulapho impahla iphinda ithola ukushuba kwayo kwasekuqaleni. Isethi yokuminyanisa engu-100 % izosho ukuthi isifanekiso asibonisi ukutholwa komumo nhlobo.
Ama-Deepmaterial's Polyurethane Sealants ahlinzeka ngesibopho esiqinile, esivumelana nezimo futhi esiqinile se-elastomeric esivala ngokumelene nezinto. Bahamba phambili ekufakeni inselele ezimbonini, ezokuthutha kanye nezicelo zokwakha futhi bangapendiwa uma isikhumba senziwe. Lawa ma-sealants atholakala ezinhlobonhlobo zokuqina, izikhathi ezivulekile kanye nemibala ukuhlangabezana nezidingo zakho zohlelo lokusebenza.
