I-PU Sealant vs. I-Silicone Sealant: Yimuphi Ophumelelayo?

Uma kuziwa ezintweni zokuvala, izinketho ezimbili ezithandwayo ezivame ukuvela ezingxoxweni ama-polyurethane (PU) sealants nama-silicone sealants. Nakuba zombili zisebenzisa inhloso efanayo yokuvala amalunga nezikhala ukuvimbela ukuvuza nokuthuthukisa ubuhle, zinomehluko ohlukile mayelana nezakhiwo, izinhlelo zokusebenza, nokusebenza. Kulesi sihloko, sizohlola izici eziyingqayizivele zama-PU sealants nama-silicone sealants, futhi sinqume ukuthi iyiphi ephuma phezulu ezimeni ezihlukahlukene.

Izakhiwo ze-PU Sealant

Ama-polyurethane sealants ayimikhiqizo eguquguqukayo eyaziwa ngokuhlala kwayo okukhethekile kanye nezakhiwo zokunamathela. Ziyakwazi ukumelana nesimo sezulu, imisebe ye-UV, nokuchayeka kwamakhemikhali, okuzenza zibe ukukhetha okuhle kwezinhlelo zokusebenza zangaphandle. Ama-PU sealants anokuguquguquka okuhle kakhulu, okuwavumela ukuthi amelane nokunyakaza nokudlidliza ngaphandle kokuqhekeka noma ukulahlekelwa ukunamathela. Ziyakwazi futhi ukupendiwa futhi zifake isihlabathi, zinikeze isiphetho esingenamthungo esihlangana nezindawo ezizungezile.

Enye yezinzuzo ezibalulekile zama-PU sealants isikhathi sabo sokuphulukisa ngokushesha. Ngokuya ngokwakhiwa, ama-sealant e-PU angelapheka phakathi namahora, okuvumela ukuqedwa kwephrojekthi ngokushesha uma kuqhathaniswa nezinye izinketho zokuvala uphawu. Banamandla amahle kakhulu okubopha ezinhlobonhlobo zama-substrates, okuhlanganisa ukhuni, insimbi, ukhonkolo, namapulasitiki. Kodwa-ke, ama-sealant e-PU awanconywa ukuthi afakwe ngaphansi kwamanzi noma izindawo ezinokuchayeka njalo kwamanzi, ngoba awakwazi ukumelana namanzi njengama-silicone sealants.

Izicelo ze-PU Sealant

Ama-PU sealants asetshenziswa kakhulu ekwakheni, kwezezimoto, kwezasolwandle, nasezimbonini. Ngenxa yokuqina nokuguquguquka kwazo, zilungele ukuvala amalunga ezakhiweni zikakhonkolo, amalunga okunweba, amafreyimu amafasitela, nokufakwa kweminyango. Ama-PU sealants abuye asetshenziswe ekwenziweni kwezimoto ukuvala amaphaneli omzimba, ukufakwa kwama-windshield, kanye nezingxenye zangaphakathi zokubopha.

Embonini yasolwandle, ama-PU sealants akhethwa ezinhlelweni ezingaphansi kwamanzi lapho kudingeka ukunamathela okuphezulu nokuguquguquka. Awakwazi ukumelana namanzi anosawoti, okuwenza alungele ukuvala imithungo, amadekhi kanye nezindonga zezikebhe. Ezilungiselelweni zezimboni, izigxivizo ze-PU zisetshenziselwa ukuhlanganisa nokuvala izinhlelo zokusebenza lapho uphawu oluqinile, oluguquguqukayo ludingeka khona ukumelana nezimo zemvelo ezinzima.

Izinzuzo ze-Silicone Sealant

Ama-Silicone sealants aziwa ngokumelana kwawo namanzi okuhle kakhulu, okuwenza abe yinketho ekhethwayo ezindaweni ezichayeke kumswakama, njengezindlu zangasese, amakhishi, nezakhiwo zangaphandle. Zinokumelana okuphezulu kwe-UV, okuvimbela ukuphuzi nokuwohloka ngokuhamba kwesikhathi lapho zivezwe elangeni. Ama-Silicone sealants agcina ukuguquguquka kwawo kanye nezakhiwo zokunamathela emazingeni okushisa aphezulu, awenze afanelekele kokubili izindawo ezishisayo nezibandayo.

Enye yezinzuzo eziyinhloko zama-silicone sealants ukuthi kulula ukuyisebenzisa nokusetshenziswa kwamathuluzi. Zinokuthungwa okubushelelezi, okungaguquki okungasakazeka kalula futhi kube bushelelezi ngesibhamu se-caulking noma ithuluzi. Ama-Silicone sealants abuye abe nempilo yeshelufu ende uma kuqhathaniswa nama-PU sealant, okuvumela isitoreji esinwetshiwe ngaphandle kokubeka engcupheni ukusebenza. Ukwengeza, ama-silicone sealants awapendi, okungaba inzuzo yezinhlelo zokusebenza lapho isivalo sidinga ukuhlala sibonakala ngezinjongo zokuhlola.

Izicelo zeSilicone Sealant

Ama-Silicone sealants asetshenziswa kakhulu ezindaweni zokuhlala, ezentengiselwano, nezimboni zokuvala amafasitela, iminyango, okokulungisa amapayipi, kanye nezinhlelo ze-HVAC. Zivame ukusetshenziswa embonini yezokwakha ukuze kuhlanganiswe amajoyinti okunweba, izindonga zamakhethini, kanye nemihlangano ecwebezelayo. Embonini yezimoto, ama-silicone sealant asetshenziselwa ukubopha nokuvala izingxenye ezifana nama-gaskets, seal, nokuxhumana kukagesi.

Endlini, ama-silicone sealants athandwa ngokuhlanganisa amalunga emakhishini, ezindlini zokugeza, nakwezinye izindawo ezimanzi lapho ukumelana nomswakama kubalulekile. Ziphinde zisetshenziselwe ukuvala izikhala ezizungeze amafasitela neminyango ukuze kuthuthukiswe ukusebenza kahle kwamandla nokuvimbela ukuvuza komoya. Ezilungiselelweni zezimboni, ama-silicone sealant asetshenziselwa ukuvala izivalo zikagesi, i-HVAC ductwork, kanye nezingxenye zemishini ezihlukahlukene ezidinga uphawu olungangeni manzi.

Uma kukhulunywa ngokukhetha phakathi kwama-PU sealants nama-silicone sealants, isinqumo ekugcineni sincike ezidingweni ezithile zephrojekthi. Ama-PU sealants afaneleka kakhulu izinhlelo zokusebenza ezidinga ukunamathela okuphezulu, ukuguquguquka, nokuqina endaweni yangaphandle noma enengcindezi ephezulu. Zilungele ukwakhiwa, ezezimoto, zasolwandle, nezimboni lapho kudingeka khona uphawu oluqinile, oluhlala isikhathi eside.

Ngakolunye uhlangothi, ama-silicone sealants ahamba phambili ezindaweni lapho ukumelana kwamanzi, ukuzinza kwezinga lokushisa, kanye nokulula kokusebenza kuyizici ezibalulekile. Ziyizinketho ezidumile zezicelo zokuhlala, ezohwebo, nezimboni lapho ukuchayeka komswakama kuwukukhathazeka. Ama-Silicone sealants nawo akhethwa ekusetshenzisweni lapho kufunwa khona uphawu olubonakalayo, njengoba eza ngemibala ehlukahlukene futhi eqeda ukuze afane nezindawo ezizungezile.

Sengiphetha, womabili ama-PU sealants nama-silicone sealants anezinzuzo zawo ezihlukile kanye nezinhlelo zokusebenza. Ngenkathi ama-PU sealants enikeza ukunamathela okuphezulu nokuguquguquka kwezindawo ezidinga kakhulu, ama-silicone sealants ahlinzeka ngokumelana namanzi okuhle kakhulu kanye nokusetshenziswa kalula kwezindawo ezithandwa umswakama. Ngokuqonda izakhiwo nokusetshenziswa kohlobo ngalunye lwe-sealant, ungenza isinqumo unolwazi ngokuthi iyiphi inketho engcono kakhulu yephrojekthi yakho.

Kafushane, ama-PU sealants nama-silicone sealants kokubili yimikhiqizo ebalulekile enamandla athile nobuthakathaka. Ama-PU sealants afaneleka kakhulu izinhlelo zokusebenza zangaphandle, ezicindezela kakhulu ezidinga ukuqina nokuguquguquka, kuyilapho ama-silicone sealant ehamba phambili ezindaweni ezinomswakama lapho ukumelana kwamanzi nokulula kokufaka kubalulekile. Ngokucabangela izakhiwo nokusetshenziswa kohlobo ngalunye lwe-sealant, ungakhetha okulungile kuphrojekthi yakho ukuze uzuze imiphumela ehlala isikhathi eside, yekhwalithi ephezulu.