Isikhunta Ku-Sealant Yasegumbini Lokugeza: Kungani Sicwecwa Kalula Futhi{0}}Nemithelela Yaso Efinyelela Ukude

Isikhunta esiphuma kalula ku-sealant yasendlini yangasese singase sibukeke njengenkathazo encane, kodwa empeleni sivela ekusebenzelaneni phakathi kwamagciwane, umswakama, nokuwohloka kwezinto. Lolu daba lusabalele ezindlini emhlabeni jikelele{1}kusuka ezindaweni ezinomswakama osogwini lwase-United States kuya ezindlini ezincane zase-Europe nase-Asia. Ucwaningo lwesayensi luyaqinisekisa ukuthi le nkinga ayiyona into eyenzeka ngengozi; iqhutshwa izimo zemvelo kanye nokulinganiselwa ngokomzimba.

Kungani Isikhunta Sichuma Kuma Sealants Asegumbini Lokugezela

Amakamelo okugeza ahlinzeka indawo ekahle yokukhula kwesikhunta ngenxa yomswakama oqhubekayo, ukufudumala, kanye nemfucuza yezinto eziphilayo. Ama-Silicone sealants, avame ukusetshenziswa eduze kobhavu, osinki, namashawa, adala izimo zezulu ezincane ezisekela ukukhula kwesikhunta. Izakhiwo zazo zokuvikela ukushisa zigcina zipholile kancane kunendawo ezizungezile, zikhuthaza ukufingqa.

Ucwaningo lwango-2019 olunesihloko esithi "Decontamination of Mould-Affected Environments," olwenziwa yi-Institute of Environmental Science and Research (ESR) yaseNew Zealand, lwagqamisa ukuthi amajoyinti e-silicone yegumbi lokugezela kungenzeka enze isikhunta esimnyama uma umswakama udlula u-70%. Abacwaningi e-Porirua baphawula ukuthi udoti lwensipho nezinye izinto ezifakwe emshinini wokuvala uphawu zinikeza izakhi ezisheshisa ukukhula kwesikhunta. Lokhu kuchaza ukuthi kungani isikhunta sivame ukuvela emigqeni yokuvala uphawu kunokuba sivele kumathayela.

Ukuthi Isikhunta Sibangela Kanjani I-Sealant Ukuze I-Flake

Ukuxebuka kalula kwesikhunta se-sealant kusuka endleleni isikhunta esikhula ngayo. Isikhunta asihlali nje phezulu; ingena ijule ku-sealant. Ama-spores akha inethiwekhi ye-mycelium{2}}esabaleleka ngaphansi komhlaba, enze izinto zibe buthaka kusukela ngaphakathi nangaphandle.

Umbiko wango-2018 we-US National Institute of Standards and Technology (NIST), onesihloko esithi "Microbial Development on Construction Sealants," wabonisa ukuthi isikhunta esivamile njenge-Aspergillus niger sikhiqiza ama-enzyme aphula ama-silicone polymers. Lo msebenzi we-enzymatic udala isendlalelo esishwabene, esintekenteke-okwenza isikhunta sibonakale kulula ukusisusa{5}ngenkathi sishiya ukungcoliswa okujulile kungathintwa.

Ngokufanayo, ucwaningo lwango-2020 olwenziwa yiFraunhofer Institute for Building Physics, "Biofilm Formation on Sanitation Sealants," lwathola ukuthi ukukhula kwesikhunta kungashintsha ukwakheka kwe-polymer yama-sealant. Abacwaningi baseHolzkirchen bathole ukwehliswa kwamandla ngo-60% kuya ku-70%, yingakho ama-sealant ama-sealant alimala kunokuthi ahlale eqinile.

Iqhaza Lomswakama Nokuwohloka Kwempahla

Ezindlini zokugezela, ama-sealants ahlala evezwa imijikelezo yokumanzisa nokomisa. Ngokuhamba kwesikhathi, lokhu kuholela emifantwini emincane evumela izinhlamvu namanzi ukuthi zingene zijule kundaba.

Ucwaningo lwango-2021 olwenziwa yi-University of Portsmouth's School of Civil Engineering e-United Kingdom, olunesihloko esithi "Fungal Resistance of Sealants in Extremely Humid Environments," lwathola ukuthi ama-silicone sealant ajwayelekile alahlekelwa kufika ku-40% wamandla awo okunamathela ngemuva kwemijikelezo yomswakama ephindaphindiwe. Lokhu kulahlekelwa kokunamathela kuguqula i-sealant ibe yilokho abacwaningi abakubiza ngokuthi "umgwaqo omkhulu we-biofilm," okwenza isikhunta sisakazeke kalula.

Lokhu okutholakele kuqinisekisa ukuthi ukuxebuka kwe-moldy sealant akuyona nje indaba engaphezulu{0}}kuyinkinga yesakhiwo ebangelwa ukucindezeleka kwendawo kanye nokusebenza kwe-microbial.

Imithelela Yezempilo Nesakhiwo

Izinhlamvu zesikhunta zingaphezu nje kokukhathazeka kobuhle; ziphinde zibe yingozi enkulu empilweni. I-US Environmental Protection Agency (EPA) ikhombe ukuxhumana phakathi kokuchayeka kwesikhunta endlini kanye nokungezwani komzimba nezinto ezithile, izinkinga zokuphefumula, nesifo somoya. Izinhlobo ezithile zezilwane, njenge-Stachybotrys chartarum, zikhulula ama-mycotoxins angaphuma emoyeni lapho ephazanyiswa, okwandisa ingozi yokuhogela.

Umbiko weWorld Health Organization (WHO) 2023 mayelana nobumanzi basendlini uveza ukuthi ukuchayeka kwesikhunta kungabangela izifo zokuphefumula engxenyeni enkulu yemizi yasemadolobheni emhlabeni jikelele.

Ngokwesakhiwo, i-sealant eyonakalisiwe ingavumela amanzi ukuthi angene kuthayela nezinye izinto. Lokhu kuvuza okucashile kungalimaza phansi, izindonga, nezakhiwo ezingaphansi{1}okuvame ukungabonakali kuze kube yilapho kudingeka ukulungiswa okumba eqolo.