Raws li peb txhua tus paub, cov tsev feem ntau xav kom muaj lub neej ua haujlwm tsawg kawg 50 xyoo. Yog li ntawd, cov khoom siv yuav tsum muaj lub neej ua haujlwm ntev. Silicone sealant tau dav siv nyob rau hauv lub tshav pob ntawm lub tsev waterproofing thiab sealing vim nws zoo heev kub thiab tsis kub tsis kam, zoo heev huab cua aging kuj, thiab zoo bonding zog. Txawm li cas los xij, tom qab ib lub sij hawm tom qab kev tsim kho, discoloration ntawm silicone sealant tau dhau los ua qhov teeb meem tsis tu ncua, uas tawm sai sai "kab" ntawm cov tsev.
Vim li cas cov kua nplaum silicone hloov xim tom qab siv?
Muaj ntau ntau qhov laj thawj rau ib nrab lossis ua tiav cov xim ntawm silicone tunnel sealant lossis iav kua nplaum, feem ntau hauv cov hauv qab no:
1. Kev tsis sib haum ntawm cov khoom sib txawv ntawm cov khoom siv sib khi Acidic sealants, nruab nrab cawv-raws li sealants, thiab nruab nrab oxime-based sealants tsis tuaj yeem siv ua ke, vim tias lawv tuaj yeem cuam tshuam ib leeg thiab ua rau tsis muaj xim. Acidic iav sealants tuaj yeem ua rau oxime-raws li sealants tig daj, thiab siv nruab nrab oxime-based thiab nruab nrab cawv-raws li iav sealants ua ke kuj tuaj yeem ua rau daj.
Cov molecules tso tawm thaum lub sij hawm kho ntawm nruab nrab oxime-type sealants, -C = N-OH, tuaj yeem hnov mob nrog acids los tsim cov amino pawg, uas yooj yim oxidized los ntawm oxygen nyob rau hauv cov huab cua los tsim cov xim xim, ua rau discoloration ntawm sealant.
2. Sib cuag nrog roj hmab thiab lwm yam ntaub ntawv
Silicone sealants tuaj yeem tig daj thaum sib cuag ncaj qha nrog qee hom roj hmab, xws li roj hmab ntuj, roj hmab neoprene, thiab EPDM roj hmab. Cov roj hmab no tau siv dav hauv cov ntaub thaiv phab ntsa thiab qhov rais / qhov rooj ua cov roj hmab strips, gaskets, thiab lwm yam khoom. Qhov kev hloov xim no yog qhov tsis sib xws, tsuas yog cov khoom sib txuas ncaj qha nrog cov roj hmab tig daj thaum lwm qhov chaw tsis cuam tshuam.
3. Sealant discoloration kuj tuaj yeem tshwm sim los ntawm kev ncab ntau dhau
Qhov tshwm sim no feem ntau ua yuam kev vim yog xim poob ntawm lub sealant, uas tuaj yeem tshwm sim los ntawm peb yam xwm txheej.
1) Lub sealant siv tau dhau nws qhov peev xwm hloov chaw thiab qhov sib koom ua ke tau ncab ntau dhau.
2) Lub thickness ntawm sealant nyob rau hauv tej qhov chaw yog nyias heev, ua rau cov xim hloov concentrated nyob rau hauv cov cheeb tsam.
4. Lub discoloration ntawm sealant kuj tuaj yeem tshwm sim los ntawm ib puag ncig yam.
Hom discoloration no muaj ntau dua nyob rau hauv nruab nrab oxime-type sealants, thiab lub ntsiab yog vim li cas rau lub discoloration yog lub xub ntiag ntawm acidic tshuaj nyob rau hauv cov huab cua. Muaj ntau qhov chaw ntawm cov kua qaub hauv huab cua, xws li kho cov kua qaub silicone sealant, acrylic coatings siv rau hauv kev tsim kho, siab sulfur dioxide nyob rau hauv cov huab cua thaum lub caij ntuj no nyob rau sab qaum teb, hlawv cov khib nyiab yas, hlawv asphalt, thiab lwm yam. Tag nrho cov kua qaub no hauv huab cua tuaj yeem ua rau oxime-type sealants kom tsis muaj xim.
Yuav ua li cas kom tsis txhob discoloration ntawm silicone sealant?
1) Ua ntej kev tsim kho, ua qhov kev sib tw ntawm cov khoom sib txuas nrog lub sealant kom ntseeg tau tias muaj kev sib raug zoo ntawm cov ntaub ntawv, lossis xaiv cov khoom siv sib xws, xws li xaiv cov khoom siv roj hmab silicone es tsis txhob siv cov khoom siv roj hmab kom txo tau qhov tshwm sim ntawm yellowing.
2) Thaum lub sij hawm tsim kho, nruab nrab sealant yuav tsum tsis txhob nyob rau hauv kev sib cuag nrog acid sealant. Cov tshuaj amine uas tsim los ntawm decomposition ntawm nruab nrab sealant tom qab ntsib acid yuav oxidize nyob rau hauv cov huab cua thiab ua rau discoloration.
3) Tsis txhob sib cuag los yog raug cov sealant rau corrosive ib puag ncig xws li acids thiab alkalis.
4) Discoloration feem ntau tshwm sim nyob rau hauv lub teeb-xim, dawb, thiab pob tshab khoom. Xaiv cov xim dub lossis xim dub tuaj yeem txo qhov kev pheej hmoo ntawm kev hloov xim.
5) Xaiv cov sealants nrog lav zoo thiab zoo lub koob npe nrov-JUNBOND.
Post lub sij hawm: May-22-2023