Kuxelwe ukuba i-silicone adhesive yesakhiwo sesakhiwo isetyenziswa ngokubanzi kumanqanaba obushushu angama-5 ~ 40℃. Xa ubushushu bomphezulu we-substrate buphezulu kakhulu (ngaphezu kwama-50℃), ulwakhiwo alunakwenziwa. Ngeli xesha, ulwakhiwo lunokubangela ukuba impendulo yokupholisa ye-building sealant ikhawuleze kakhulu, kwaye izinto ezincinci ze-molecular ezivelisiweyo azinaxesha lokufuduka ziphume kumphezulu we-colloid, zize ziqokelele ngaphakathi kwe-colloid ukuze zenze amaqamza, ngaloo ndlela zitshabalalise imbonakalo yomphezulu we-glue joint. Ukuba ubushushu buphantsi kakhulu, isantya sokupholisa se-building sealant siya kucotha, kwaye inkqubo yokupholisa iya kwandiswa kakhulu. Ngexesha lale nkqubo, izinto zinokukhula okanye zinciphe ngenxa yokwahluka kobushushu, kwaye ukuphuma kwe-sealant kunokugqwetha imbonakalo.
Xa ubushushu bungaphantsi kwe-4 ℃, umphezulu we-substrate kulula ukuwufumbathisa, ukuwukhenkceza kunye nomkhenkce, nto leyo ezisa iingozi ezinkulu ezifihlakeleyo ekubopheleleni. Nangona kunjalo, ukuba ucoca umbethe, i-icing, umkhenkce kwaye unolwazi olupheleleyo ngeenkcukacha ezithile, ukwakha izincamathelisi zesakhiwo kungasetyenziselwa ukwakha iglue eqhelekileyo.
Ukucocwa kwemiphezulu yezinto kubalulekile ekutywineni nasekubopheni. Ngaphambi kokubopha, i-substrate kufuneka icocwe nge-solvent. Nangona kunjalo, ukuguquguquka kwe-arhente yokucoca kunye nokulinganisa kuya kuthatha amanzi amaninzi, nto leyo eya kwenza ubushushu bomphezulu we-substrate bube ngaphantsi kobushushu bomphezulu wenkcubeko yeringi eyomileyo. Kwindawo enobushushu obuphantsi bokomisa, kulula ukudlulisela amanzi ajikelezileyo kwi-substrate nganye nganye. Kunzima kwabanye abasebenzi ukuqaphela umphezulu wezinto. Ngokwemeko eqhelekileyo, kulula ukubangela ukungaphumeleli kwe-bonding kunye nokwahlukana kwe-sealant kunye ne-substrate. Indlela yokuphepha iimeko ezifanayo kukucoca i-substrate ngelaphu elomileyo ngexesha emva kokucoca i-substrate nge-solvent. Amanzi aqunyiweyo aya kusulwa nge-rag, kwaye kungcono ukufaka iglu ngexesha.
Xa ukwanda kobushushu kunye nokucotha kokubanda kwezinto ngenxa yobushushu kukhulu kakhulu, akufanelekanga ukwakhiwa. Xa kwakhiwa i-silicone sealant yolwakhiwo ihamba kwicala elinye emva kokulungiswa, inokubangela ukuba i-sealant ihlale ixinene okanye icinezelwe, nto leyo enokubangela ukuba i-sealant ihambe kwicala elinye emva kokulungiswa.
Ixesha lokuthumela: Meyi-20-2022