Ekwakhiweni kwengqalasizinda yesimanje kanye nokwakhiwa kwengqalasizinda enkulu, ukuphathwa kwamajoyinti okunwetshwa kwekhonkrithi kuhlobene ngqo nokuqina kanye nokuphila kwenkonzo kwesakhiwo. Njengento embobo enezici zokukhula kokushisa okukhulu kanye nokufinyela, ikhonkrithi idala ukucindezeleka kokuhamba ngaphansi kwethonya lokushintshashintsha kwezinga lokushisa, ukufuduka komswakama, kanye nemithwalo yemishini. Ukuze kuvinjelwe ukuqhekeka okungalawuleki, imiklamo yobunjiniyela kumele ifake amajoyinti okunwetshwa abalwe ngokwesayensi agcwele ukusebenza okuphezulu.isivali esizilinganisayoPhakathi kwezinto ezihlukahlukene ongakhetha kuzo,isivalo se-polyurethane esizilinganisayoisibe yisisombululo esithandwayo sabathengi abakhulu kanye nochwepheshe bobunjiniyela bemigwaqo yezindiza, imigwaqo emikhulu, phansi kwezimboni, kanye nezindawo zokupaka ngenxa yokunamathela kwayo okuphezulu, ukumelana nokuguguleka, kanye nokumelana namakhemikhali.
Isayensi Yezinto Ezibalulekile Nokukhethwa Kwemakethe: Ukuphendula "Yisiphi isivalo esingcono kakhulu samalunga okunweba?"
Ukuze uphendule umbuzo oyinhloko othi "yisiphi isivalo esingcono kakhulu samalunga okunweba," umuntu kumele ahlole umgogodla wamakhemikhali wezinto zokwakha kanye nokusebenza kwazo kwemishini ngaphansi kwezimo ezimbi kakhulu. Imakethe yomhlaba wonke okwamanje inikeza izinhlelo ezahlukene, okuhlanganisai-polyurethane, i-silicone, i-polysulfide, kanye nama-polymer ahlanganisiwe (MS).
Isikhundla Esihamba Phambili Sezivalo Ze-Polyurethane
Ama-polyurethane sealant angama-polymer akhiwe ukusabela kwama-diisocyanates nama-polyol, aqukethe amaqembu e-urethane ane-polar kakhulu ahlinzeka ngokubopha okuqinile kwamakhemikhali ezindaweni ezingaphansi komhlaba ezifana nokhonkolo, itshe, nensimbi. Ikakhulukazi ezindaweni ezithwala imithwalo esindayo njengemigwaqo yezindiza,isivalo se-polyurethane esizilinganisayo(njengeI-Siway SV313) kubonisa ukuqina komzimba okunzima ukukufanisa nezinye izinto.
Inzuzo yesistimu ye-polyurethane isekuguquguqukeni kwayo, inikeza izinketho eziningi kusukela ku-modulus ephansi (ukuguquguquka okuphezulu) kuya ku-modulus ephezulu (amandla aphezulu) ukuze kuhlangatshezwane nezidingo ezahlukene zokufuduka. Kumajoyinti avundlile abhekene nokuxinana kwezimoto njalo, ama-polyurethane sealant anamandla aphezulu amelana ngempumelelo nokugxunyekwa kwemfucumfucu engacindezeleki, okuvimbela ukuchitheka kukakhonkolo okubangelwa izinto zakwamanye amazwe ezifakwe ejoyintini.
I-Silicone vs. I-Polyurethane: Ukuncintisana Okuhlukile
I-silicone sealant ezilinganisayoisekelwe ku-silicon-oxygen (I-Si-O) umgogodla, ohlinzeka ngokumelana okuhle kakhulu kwe-UV kanye nokuqina kwezinga lokushisa, kanye namakhono okunyakaza avame ukufika ku-±50% noma ngisho ku-±100%. Kodwa-ke, emajoyintini avundlile afaka imithwalo esindayo, ukumelana nokuklwebheka kanye namandla okudabuka kwe-silicone ngokuvamile kungaphansi kwe-polyurethane.
Ithebula elilandelayo liqhathanisa izinkomba zokusebenza ezibalulekile zezinhlelo ezinkulu ze-sealant kubunjiniyela obukhulu:
| Isilinganiso sokusebenza | I-Polyurethane Ezilinganiselayo (PU) | I-Silicone Ezilinganisayo | Isivali se-Polysulfide | I-Hybrid Polymer (MS) |
| Amandla Okunyakaza | ±25% kuya ku-±35% | ±50% kuya ku-±100% | ±25% | ±25% kuya ku-±35% |
| Ukunamathela (Ukhonkolo) | Kuhle kakhulu (Akunaso isisekelo esivamile) | Kuhle (Ngokuvamile kudinga i-primer) | Okuphakeme | Kuhle |
| Ukumelana Nokuguguleka | Phezulu Kakhulu | Okumaphakathi | Phansi | Okumaphakathi |
| Ukumelana ne-UV | Kuhle (Kudinga iziqinisi) | Kuhle kakhulu | Isilinganiso | Kuhle kakhulu |
| Ukumelana Nophethiloli/Amakhemikhali | Kuhle kakhulu | Okumaphakathi | Okuphakeme | Isilinganiso |
| Ukupendwa kalula | Yebo | Cha | Cha | Yebo |
| Impilo Yesevisi | Iminyaka eyi-10-15 | Iminyaka engu-20+ | Iminyaka eyi-10-20 | Iminyaka eyi-10-15 |
Uma ucabanga ngeisivali sokulinganisa esizilinganisayo sekhonkrithikumaphrojekthi ahilela ukuminyana kwezimoto njalo kanye nokuchayeka kumakhemikhali (isb., imigwaqo yezindiza, iziteshi zikaphethiloli, izindawo zokugcina impahla), i-polyurethane ngokungangabazeki iyisinqumo esihle kakhulu sokusebenza okuphelele.
Izinzuzo zeFiziksi kanye Nokwakha Zobuchwepheshe Bokuzilinganisa
Uma kuqhathaniswa nezinsimbi zokuvala ezingaboli,isivali sokulinganisa esizilinganisayo samalunga okunwebainikeza izinzuzo ezinkulu zobuchwepheshe ekusetshenzisweni okuvundlile. Lezi zinto zine-viscosity ephansi yokuqala kanye ne-rheology enhle kakhulu, ezivumela ukuthi zigcwalise ngokuzenzakalelayo zonke izikhala esihlanganyelweni ngaphansi kwamandla adonsela phansi, zakha indawo ebushelelezi, elinganayo ngaphandle kwesidingo samathuluzi esandla.
Amandla Oketshezi Ejoyintini
Ukugeleza kwe-aisivalo se-polyurethane esizilinganisayokuqinisekisa "ukumanziswa" ngokuphelele kwezindonga zekhonkrithi, okuyisisekelo sesibopho esiqinile semishini. Kumaphrojekthi amakhulu engqalasizinda, lesi sici sithuthukisa kakhulu ukusebenza kahle kokwakhiwa futhi sinciphisa izindleko zabasebenzi, ikakhulukazi ezinkundleni zezindiza ezithatha izinkulungwane zamamitha aqondile.
Kodwa-ke, ubuchwepheshe bokuzilinganisa budinga ukwakheka okuqinile kwedamu. Onjiniyela kumele baqinisekise ukuthi kufakwa induku efanele yokusekela ukuvimbela ukuthi i-sealant ingangeni e-subbase, okungabangela ukungcola kwezinto kanye nokwehluleka kwesakhiwo.
Ukucindezeleka Kokufuduka kanye neFomula Yokuklama "I-Hourglass"
Isilinganiso sokujula kobubanzi be-sealant sithinta ngqo impilo yaso yokukhathala. Okungcono kakhulu, isilinganiso sokujula nobubanzi bejoyinti kufanele sibe yi-1:2.
Uma ububanzi bejoyinti bungu-W kanti ukujula kungu-D, isincomo siwukuthi:
D=W/2 (kwamalunga ane-W ＞12.5mm)
Kumalunga amancane, ukujula kufanele kugcinwe cishe ku-6mm.
Ngokusebenzisa induku yokusekela ye-polyethylene evaliwe, i-sealant ingakhiwa ibe yiphrofayili "ye-hourglass" (incane phakathi nendawo, ijiyile ezinhlangothini). Le geometry ihlakaza ngempumelelo ukucindezeleka ngesikhathi sokunyakaza kwamalunga, ivimbele ukwehluleka kokunamathela emgqeni wokubopha.
Ingcweti Yezindiza: Gxila Ngokujulile eSiway SV313 20kg Polyurethane Sealant
Kubathengi abakhulu abathengayo, iSiway SV313 yakhelwe njengesivikelo se-polyurethane esinzima semigwaqo yezindiza, imigwaqo yamatekisi, kanye nemigwaqo emikhulu, ilinganisela ukusebenza okuphezulu kanye nobukhulu bezomnotho.
Izinzuzo Eziyinhloko Zobuchwepheshe ze-SV313
I-SV313 iyi-polyurethane enesici esisodwa, eqeda umswakama elungiselelwe ingqalasizinda enkulu:
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1. Ukumelana Nophethiloli Wezindiza: Izindawo zokugijima zihlale zichayeka kuphethiloli wejethi, uketshezi lwe-hydraulic, kanye nama-de-icing agents. Ukuxhumanisa kwama-molecule e-SV313 kuyivumela ukuthi igcine izakhiwo zomzimba ngisho nangemva kokucwiliswa kuphethiloli isikhathi eside, ihlangabezana nezindinganiso zomhlaba wonke njenge-SS-S-200E.
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2. I-High Abrasion Modulus: Izinto ezilungisiwe zinokululama okuphezulu nokunwebeka kanye nokumelana nokuguguleka, ezikwazi ukumelana nokungqubuzana okusheshayo kwamathayi endiza kanye nokucindezela okuqondile kwegiya lokufika.
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3. Ukuzivumelanisa Nezimo Zokushisa Ezibanzi: I-SV313 ihlala ithambile kusukela ku--40℃ kuya ku-+80℃, ibhekana nokushintshashintsha kwezinga lokushisa kwesizini kuzo zonke izifunda zomhlaba.
Ukufakwa Kwempahla Yokupakisha Amapheya Ezimboni angu-20kg
Kubathengi bamazwe ngamazwe ngobuningi, ukupakisha kunquma izindleko zokwakha kanye nokusebenza kahle. Uma kuqhathaniswa nama-cartridge angu-310ml noma amasoseji angu-600ml, amabhakede angu-20kg anikeza izinzuzo ezinkulu kumaphrojekthi amakhulu:
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* Ukuqhubeka Kokwakha:Ezindleleni zokubaleka, amabhakede angama-20kg ahlanganiswe nezinhlelo zokupompa ezisebenzisa umoya noma zikagesi avumela ukuthululwa okuqhubekayo okude, okunciphisa kakhulu isikhathi sokungasebenzi kokushintsha iphakheji.
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* Ukunciphisa Imfucuza:Ukupakishwa ngobuningi kunciphisa kakhulu isilinganiso semfucuza yepulasitiki. Ukusebenzisa amabhakede amakhulu kunganciphisa imfucuza yokupakishwa ngamaphesenti angaphezu kuka-90 uma kuqhathaniswa nama-cartridge, okuhambisana nemigomo yesimanje ye-Green Engineering (ESG).
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*Izindleko Ezinhle Zeyunithi:Ukupakishwa kwephekhi kunikeza isilinganiso esihle kakhulu sezinto zokwakha nomthamo, okungenzeka konge u-15%-25% entengo yeyunithi yokuthenga okukhulu.
Iyiphi indlela engcono kakhulu yokuvala amajoyinti okunwebeka kukhonkolo?
Ikhwalithi yokwakha iyisihluthulelo sempumelelo. Ngisho noma usezingeni eliphezuluisivalo se-polyurethane esizilinganisayo, uhlelo cishe luzohluleka phakathi neminyaka eyi-1-2 uma imininingwane yokwakha inganakwa.
Isinyathelo 1: Ukulungiselela Okuqinile Komphezulu
Izindonga ezihlangene kumele zibe "ziphilile, zomile, futhi zihlanzekile." Ngomsebenzi osezingeni lesikhumulo sezindiza, ukuqhumisa isihlabathi kunconywa kakhulu ukuze kususwe ukugoba, ama-curing compounds, kanye nezinsalela ezindala ze-sealant.
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* Ukulawulwa Komswakama: I-polyurethane iyazwela umswakama; okuqukethwe komswakama okwenziwe ngokhonkolo kufanele kube ngaphansi kuka-4%. Umswakama ophezulu ungabangela amabhamuza e-CO₂, okuholela ezimbotsheni zangaphakathi ku-sealant.
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* Ukususwa KothuliSebenzisa umoya ocindezelwe ongenawo uwoyela ukuze ukhiphe uthuli oluncane ukuze ubophe izinga lama-molecule.
Isinyathelo 2: Ukufakwa Kwesistimu Yokusekela
Faka induku yokusekela ye-polyethylene enamaseli avaliwe enobubanzi obungaba ngu-25% kunobubanzi bejoyinti. Induku yokusekela isebenza "njenge-bond breaker" ukuvimbela ukunamathelana kwezinhlangothi ezintathu. Ukunamathelana kwezinhlangothi ezintathu kubangela ukwanda kwe-geometric kokucindezeleka kwangaphakathi ngesikhathi sokwandiswa, okuholela ekudabukeni kwangaphambi kwesikhathi.
Isinyathelo 3: Indima Yesu Yokuhlela
Nakuba i-SV313 ine-self-adhesion enhle kakhulu, ochwepheshe basikisela kakhulu ukusebenzisa i-polyurethane primer kukhonkolo evuvukile noma egugile. Ama-primer angena kuma-micro-pores ekhonkolo, avale ama-capillary futhi anikeze isikhombimsebenzisi esisebenzayo ngamakhemikhali esingakhulisa ukunamathela ngaphezu kuka-50%.
Isinyathelo 4: Indawo Yokuthela Nokuphola
Faka i-SV313 esibayeni, ugcine umlomo useduze nephansi ukuze ususe umoya futhi uvimbele izikhala.
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* Ifasitela Lokushisa: Izinga lokushisa elifanele lokusetshenziswa liphakathi kuka-5 ℃ no-35 ℃. Gwema ukushisa kwasehlobo emini; njengoba ukhonkolo ukhula kakhulu (ijoyinti elincane kakhulu), ukuvala kuzobeka izinto ekucindezelekeni okukhulu lapho ukhonkolo uncipha ebusika.
Ukuthobela imithetho kanye nezindinganiso: SS-S-200E kanye ne-ASTM D5893
Kubathengi abakhulu, ukuthobela imithetho yamazwe ngamazwe akunakuxoxiswana ngakho. Izindawo zokugijima akumele zimelane nokunyakaza kuphela kodwa futhi "neJet Blast" kanye nokucwiliswa kukaphethiloli.
| Ikhodi Ejwayelekile | Isicelo | Izidingo Eziyinhloko |
| I-SS-S-200E | Uhulumeni/wezempi | Ukumelana nokuqhuma kwejethi, ukumelana nophethiloli wejethi, ukwelashwa okusheshayo |
| I-ASTM D5893 | Umgwaqo kanye Nomgwaqo Wesitimela | Ukunyakaza kwe-silicone/PU okufakwe emakhazeni, ukuguquguquka kwezinga lokushisa eliphansi |
| I-ASTM D7116 | Izindiza/izimboni | Ukusebenza kahle kwezithiya ezingamelani nophethiloli ezindleleni ze-PCC |
Imikhiqizo ehlangabezana ne-SS-S-200E (njengezithiyo ze-SV313-grade) kumele idlule ekuvivinyweni kokumelana nomlilo okuqinile kanye nokucwiliswa kukaphethiloli. Lokhu kuqinisekisa ukuthi isithiyo ngeke sithambe noma siqhekeke lapho sivezwa emsipheni wokushisa okuphezulu wezinjini zezindiza.
Ukuthengwa Komhlaba Wonke: Ukuhlaziywa Kwezindleko Zomjikelezo Wokuphila (LCCA)
Uma bethenga ngesilinganiso samayunithi angaphezu kuka-10,000, abathengi bashintsha ukugxila kusuka entengo yokuqala kuya ekuHlaziyweni Kwezindleko Zomjikelezo Wokuphila.
Ukuqhathaniswa Kwemodeli ye-LCCA
Izitebhisi zekhonkrithi zenzelwe iminyaka engama-20-30, kodwa izivalo ziyizinto zokulungisa. Ama-asphaltic filler ashibhile angadinga ukulungiswa njalo eminyakeni emi-3-5. Ngokuphambene nalokho, ukusebenza kahle kakhuluisivalo se-polyurethane esizilinganisayonjenge-SV313 ingandisa imijikelezo yokulungisa ibe yiminyaka eyi-10-15.
Izindleko Zokulungisa Ezilinganiselwa Zeminyaka Engu-20 (ngamamitha ayi-1,000 aqondile):
| Intengo Yento | Isigcwalisi Esijwayelekile Esisetshenziswa Ngokushisayo | I-SV313 Esebenza Kakhulu |
| Izinto Zokuqala/Umsebenzi | $5,000 | $12,000 |
| Imvamisa Yokulungisa | Izikhathi ezine | Isikhathi esisodwa |
| Izindleko Zokuphumula (ngomcimbi ngamunye) | $50,000 | $50,000 |
| Izindleko Eziphelele Zeminyaka Engama-20 (i-NPV) | $225,000 | $62,000 |
Indlela Eqhutshwa Ubuchwepheshe Yokuphatha Okuhlangene
Kubunjiniyela bekhonkrithi, impumelelo yamajoyinti okunweba ichaza idumela lephrojekthi.Isivali esizilinganisayoisuke ekugcwaliseni okulula yaba umkhiqizo wobunjiniyela bama-molecule obunembile. Ngokusebenzisaisivalo se-polyurethane esizilinganisayo, ikakhulukazi amazinga ezimboni afana neSiway SV313 engqalasizinda enabantu abaningi, onjiniyela bangalwa ngempumelelo nokungena kwamanzi, ukungena kwemfucumfucu, kanye nokuhlaselwa ngamakhemikhali.
Abathengi abakhulu bokuthenga kufanele basebenzise umqondo osekelwe kwi-Life-Cycle Cost (LCCA), amazinga omhlaba wonke (SS-S-200E), kanye nokupakishwa kwezimboni okungu-20kg. Lokhu akuyona nje imfuneko yekhwalithi yobunjiniyela kodwa kuyindlela ebalulekile eya ekwakhiweni kwengqalasizinda esimeme futhi eluhlaza.
Q: Hlobo luni lwesivalo olusetshenziswa kumajoyinti okunweba?
A:Ama-sealant asetshenziswa kakhulu kuma-expansion joints yi-polyurethane sealants, i-silicone sealants, kanye ne-polysulfide sealants.
Phakathi kwazo, i-self leveling polyurethane sealant isetshenziswa kabanzi ekunwetshweni kwekhonkrithi ngoba inikeza ukunamathela okuqinile kuma-substrate anezimbobo njengokhonkrithi, ukuguquguquka okuhle kakhulu, kanye nokuqina kwesikhathi eside ngaphansi kwemithwalo yezimoto.
Kuvame ukusetshenziswa ku:
• izindawo zokungena kwezindiza esikhumulweni sezindiza
• izindawo zokungena emgwaqweni omkhulu
• ama-slab ekhonkrithi ezimboni
• izakhiwo zokupaka
• amadekhi ebhuloho
Kumajoyinti avundlile, osonkontileka bavame ukukhetha i-self leveling sealant ngoba igeleza ngokulinganayo futhi yakha indawo engangenwa manzi ebushelelezi ngaphandle kokusebenzisa amathuluzi ngesandla.
U: Ungayisebenzisa yini i-silicone sealant kumajoyinti okunweba ukhonkolo?
A: Yebo, i-silicone sealant ingasetshenziswa ezinhlanganisweni zokunweba, kodwa akuyona njalo indlela engcono kakhulu yokubeka ukhonkolo.
Ama-silicone sealant asebenza kahle kakhulu ezindaweni ezingenazo izimbobo njengengilazi, i-aluminium, nensimbi, okwenza zithandeke kakhulu ekusetshenzisweni kwe-façade kanye ne-glazing. Kodwa-ke, ukunamathela ezintweni ezinezimbobo njengokhonkolo kungadinga ama-primer.
Kumajoyinti ekhonkrithi avundlile aqinile, i-self leveling polyurethane sealant ngokuvamile iyathandwa ngoba inikeza:
• ukunamathela okuqinile kukhonkrithi
• ukumelana okungcono kokuguguleka
• ukuqina okuthuthukisiwe ngaphansi kwemithwalo yethrafikhi
Q: I-expansion joint sealant ihlala isikhathi esingakanani?
A: Isikhathi sokuphila se-expansion joint sealant sincike ohlotsheni lwezinto, izimo zemvelo, kanye nokuchayeka kwethrafikhi.
Izinhlobo zokuphila kwesevisi ezijwayelekile zifaka:
• I-polyurethane sealant: iminyaka eyi-10-20 ezinhlotsheni eziningi zengqalasizinda
• I-silicone sealant: iminyaka engu-15-20 ezinhlangothini noma emajoyintini acwebezelayo
• I-polysulfide sealant: iminyaka eyi-10–15 ezindaweni ezikhethekile
I-polyurethane sealant esezingeni eliphezulu yokuzilinganisa yokuxhumanisa ukhonkolo inganikeza ukuqina kwesikhathi eside ezindaweni ezidinga amandla njengemigwaqo emikhulu, izikhumulo zezindiza kanye nezitezi zezimboni.
U: Uyini umehluko phakathi kwe-self leveling sealant kanye ne-non-sag sealant?
A:Umehluko omkhulu usebusweni besicelo.
Isivali sokuzilinganisa
• Yakhelwe amalunga avundlile
• Igeleza ngokuzenzakalelayo ingene esikhaleni
• Kudala indawo ebushelelezi nelinganayo
• Kulungele phansi, ama-slab, kanye nezindawo zokuhlangana kwemigwaqo
Isivali esingaboli
• Yakhelwe amalunga aqonde phezulu noma angaphezulu
• Igcina isimo sayo ngaphandle kokugeleza
• Ivame ukusetshenziswa emajoyintini angaphambili noma emajoyintini odonga
Kumajoyinti okunwetshwa kwekhonkrithi kuma-slab noma kuma-pavement, i-self leveling sealant iyindlela ekhethwayo.
Isikhathi sokuthunyelwe: Ephreli-23-2026