Silicone sealant kapena zomatira ndi chinthu champhamvu, chosinthika chomwe chitha kugwiritsidwa ntchito mosiyanasiyana. Ngakhale silikoni sealant si yolimba monga zosindikizira kapena zomatira, silikoni sealant imakhala yosinthika kwambiri, ngakhale ikauma kapenakuchiritsidwa. Silicone sealant imathanso kupirira kutentha kwambiri, ndikupangitsa kuti ikhale yabwino kwa mapulogalamu omwe amavutika ndi kutentha kwambiri, monga pamagetsi a injini.
Kuchiritsa silicone sealant kumawonetsa kukana kwanyengo, kukana kukalamba, kukana kwa UV, kukana kwa ozoni, kukana kutentha kwambiri komanso kutsika, kukana kugwedezeka, kukana chinyezi, komanso kuteteza madzi; Choncho, ntchito zake ndi zambiri. M'zaka za m'ma 1990, nthawi zambiri ankagwiritsidwa ntchito pogwirizanitsa ndi kusindikiza mu makampani a galasi, choncho amadziwika kuti "zomatira zamagalasi."
Chithunzi chapamwamba: Silicone yochiritsa sealant
Chithunzi chakumanzere: Kulongedza ng'oma ya silicone sealant
Silicone sealant nthawi zambiri imachokera ku 107(hydroxy-terminated polydimethylsiloxane), ndipo imapangidwa ndi zinthu monga ma polima olemera kwambiri, mapulasitiki, zodzaza, zolumikizira, zolumikizira, zopangira, ndi zina zambiri. mafuta, mafuta oyera, ndi zina zotero. Zodzaza zomwe zimagwiritsidwa ntchito kawirikawiri ndi nano-activated calcium carbonate, heavy calcium carbonate, ultrafine calcium. carbonate, fumed silika, ndi zipangizo zina.
Zosindikizira za silicone zimabwera m'njira zosiyanasiyana.
Malingana ndi mtundu wosungirako, umagawidwa kukhala: zigawo ziwiri (zochuluka) ndi chigawo chimodzi.
Zigawo ziwiri (zochuluka) zikutanthauza kuti silikoni yosindikizira yogawidwa m'magulu awiri (kapena kuposa awiri) magawo A ndi B, chigawo chilichonse chokha sichingapange kuchiritsa, koma zigawo ziwiri (kapena zoposa ziwiri) zitasakanizidwa, zidzasakanizidwa. kupanga machiritso olumikizirana kuti apange elastomers.
Kusakaniza kuyenera kupangidwa nthawi yomweyo musanagwiritse ntchito, zomwe zimapangitsa mtundu uwu wa silicone sealant kukhala wovuta kugwiritsa ntchito.
Silicone sealant imathanso kubwera ngati chinthu chimodzi, popanda kusakaniza kofunikira. Mtundu umodzi wa silicone sealant wa chinthu chimodzi umatchedwaChipinda Kutentha Vulcanizing(RTV). Mtundu uwu wa sealant umayamba kuchiza utangoyamba kumene kumlengalenga - kapena, makamaka, chinyezi mumlengalenga. Chifukwa chake, ndikofunikira kuti mugwire ntchito mwachangu mukamagwiritsa ntchito RTV silikoni sealant.
Single-component silikoni sealant akhoza pafupifupi kugawidwa mu: deacidification mtundu, dealcoholization mtundu, deketoxime mtundu, deacetone mtundu, deamidation mtundu, dehydroxylamine mtundu, etc. malinga ndi osiyana crosslinking wothandizira (kapena mamolekyu ang'onoang'ono kwaiye pochiritsa) ntchito. Mwa iwo, mtundu wa deacidification, mtundu wa dealcoholization ndi mtundu wa deketoxime amagwiritsidwa ntchito kwambiri pamsika.
Mtundu wa deacidification ndi methyl triacetoxysilane (kapena ethyl triacetoxysilane, propyl triacetoxysilane, etc.) monga crosslinking agent, yomwe imapanga acetic acid pochiritsa, yomwe imadziwika kuti "acid glue". Ubwino wake ndi: mphamvu yabwino komanso kuwonekera, kuchiritsa mwachangu. Zoipa ndi: kukwiyitsa acetic acid fungo, dzimbiri zitsulo.
Dealcoholization mtundu ndi methyl trimethoxysilane (kapena vinyl trimethoxysilane, etc.) monga wothandizila crosslinking, machiritso ake amatulutsa methanol, amene amadziwika kuti "mowa-mtundu guluu". Ubwino wake ndi: kuteteza zachilengedwe, zosawononga. Zoipa: Kuthamanga kwapang'onopang'ono, moyo wa alumali wosungirako ndi wosauka pang'ono.
Mtundu wa Deketo oxime ndi methyl tributyl ketone oxime silane (kapena vinyl tributyl ketone oxime silane, etc.) monga cholumikizira, chomwe chimapanga butanone oxime pakuchiritsa, chomwe chimadziwika kuti "oxime type glue". Ubwino wake ndi: palibe kununkhira kwakukulu, kumamatira bwino kuzinthu zosiyanasiyana. Zoipa: dzimbiri zamkuwa.
Malinga ndi kugwiritsa ntchito mankhwala ogaŵikana: structural sealant, nyengo kugonjetsedwa sealant, chitseko ndi zenera sealant, sealant olowa, moto-proof sealant, anti-mildew sealant, kutentha kwambiri sealant.
Malinga ndi mtundu wa mankhwala kuti mfundo: ochiritsira mtundu wakuda, zadothi woyera, mandala, siliva imvi 4 mitundu, mitundu ina tikhoza kuchita malinga ndi makasitomala amafuna toning.
Palinso mitundu ina, yaukadaulo wapamwamba kwambiri wa silicone sealant nawonso. Mtundu umodzi, wotchedwakuthamanga kwambirisilikoni yosindikizira, imakhala ndi mphamvu yokhazikika ndipo imagwirizana ndi kukakamiza mwadala - mwa kuyankhula kwina, ngakhale kuti nthawi zonse imakhala "yomata," siimamatira ngati chinachake chitangogwedeza kapena kupumira kutsutsana nacho. Mtundu wina umatchedwaUV or ma radiation adachiritsidwasilicone sealant, ndipo amagwiritsa ntchito kuwala kwa ultraviolet kuchiritsa chosindikizira. Pomaliza,thermosetSilicone sealant imafuna kukhudzana ndi kutentha kuti ichire.
Silicone sealant ingagwiritsidwe ntchito m'njira zosiyanasiyana. Chosindikizira chamtunduwu chimagwiritsidwa ntchito pafupipafupi pamagalimoto ndi zinthu zina zofananira, monga chothandizira kusindikiza injini, ndi kapena popanda ma gaskets. Chifukwa cha kusinthasintha kwake kwapamwamba, chosindikizira ndi chisankho chabwino pazokonda zambiri kapena zaluso.
Nthawi yotumiza: Dec-29-2023
