Chinonamira kana kuti chinonamira chine silicone chigadzirwa chine simba uye chinochinjika chinogona kushandiswa mumabasa akasiyana-siyana. Kunyangwe chinonamira chisina kusimba sezvimwe zvinonamira kana zvinonamira, chinonamira chinoramba chichichinjika, kunyangwe kana chaoma zvachose kanaakarapwaSilicone sealant inogonawo kutsungirira tembiricha yakakwira, zvichiita kuti ive yakakodzera kushandiswa kunopisa zvakanyanya, senge pamagasket einjini.
Chisimbiso chesilicone chakacheneswa chinoratidza kusimba kwemamiriro ekunze kwakanaka, kusimba kwekukwegura, kusimba kweUV, kusimba kwe ozone, kusimba kwekupisa kwakanyanya uye kwakaderera, kusimba kwekuzununguka, kusimba kwehunyoro, uye kusimba kwekudzivirira mvura; saka, mashandisirwo acho akakura zvikuru. Muma1990, chaiwanzo shandiswa pakubatanidza nekuvhara muindasitiri yegirazi, saka chinozivikanwa se "girazi rinonamira."
Mufananidzo wepamusoro: Chisimbiso chesilicone chakacheneswa
Mufananidzo wekuruboshwe: Kurongedza drum ye silicone sealant
Silicone sealant inowanzo shandiswa pa 107 (hydroxy-terminated polydimethylsiloxane), uye inoumbwa nezvinhu zvakaita sema polymers ane uremu hwepamusoro, ma plasticizers, ma fillers, ma cross-linking agents, ma coupling agents, ma catalysts, nezvimwewo. Ma plasticizers anoshandiswa kazhinji anosanganisira silicone oil, white oil, nezvimwewo. Ma fillers anoshandiswa kazhinji anosanganisira nano-activated calcium carbonate, heavy calcium carbonate, ultrafine calcium carbonate, fumed silica, nezvimwe zvinhu.
Zvivharo zveSilicone zvinouya mumhando dzakasiyana-siyana.
Zvichienderana nerudzi rwekuchengetera, yakakamurwa kuita: zvikamu zviviri (zvakawanda) uye chikamu chimwe chete.
Zvikamu zviviri (zvakawanda) zvinoreva kuti silicone sealant yakakamurwa kuita mapoka maviri (kana anopfuura maviri) zvikamu A neB, chero chikamu chimwe chete hachigone kuumba curing, asi mushure mekunge zvikamu zviviri (kana zvinopfuura zviviri) zvasanganiswa, zvinogadzira cross-linking curing reaction kuti igadzire elastomers.
Musanganiswa uyu unofanirwa kugadzirwa pakarepo usati waushandisa, izvo zvinoita kuti rudzi urwu rwesilicone sealant ruve rwakaoma kushandisa.
Chinovhara silicone chinogonawo kuuya sechinhu chimwe chete, pasina kusanganiswa kunodiwa. Rudzi rumwe rwechinovhara silicone chechinhu chimwe chete runonziKupisa Kwemukamuri Kukuvadza(RTV). Rudzi urwu rwechivharo runotanga kupora kana rwangoiswa mumhepo - kana kuti, kunyanya, hunyoro huri mumhepo. Saka, zvakakosha kuti ushande nekukurumidza kana uchishandisa RTV silicone sealant.
Chisimbiso chesilicone chine chikamu chimwe chete chinogona kukamurwa kuita: rudzi rwe deacidification, rudzi rwe dealcoholization, rudzi rwe deketoxime, rudzi rwe deacetone, rudzi rwe deamideation, rudzi rwe dehydroxylamine, nezvimwewo zvichienderana ne crosslinking agents dzakasiyana (kana mamorekuru madiki anogadzirwa panguva yekurapwa) dzinoshandiswa. Pakati padzo, rudzi rwe deacidification, rudzi rwe dealcoholization uye rudzi rwe deketoxime ndidzo dzinonyanya kushandiswa pamusika.
Rudzi rwe deacidification imethyl triacetoxysilane (kana ethyl triacetoxysilane, propyl triacetoxysilane, nezvimwewo) sechinhu chinosanganisa zvinhu, chinoburitsa acetic acid panguva yekupisa, inozivikanwa se "acid glue". Zvakanakira zvayo ndeizvi: simba rakanaka uye kujeka, kukurumidza kupisa. Zvakashata ndeizvi: kunhuwa kweacetic acid kunotsamwisa, ngura yesimbi.
Rudzi rweDealcoholization runonzi methyl trimethoxysilane (kana vinyl trimethoxysilane, nezvimwewo) sechikamu chekubatanidza, maitiro ayo ekugadzirisa anogadzira methanol, inozivikanwa se "glue yemhando yedoro". Zvakanakira zvayo ndeizvi: kuchengetedza nharaunda, kusaparadza. Zvakashata: kukurumidza kupora kunononoka, nguva yekuchengetedza yakaderera zvishoma.
Rudzi rweDeketo oxime imethyl tributyl ketone oxime silane (kana vinyl tributyl ketone oxime silane, nezvimwewo) sechinhu chinosanganisa zvinhu, chinoburitsa butanone oxime panguva yekupisa, inozivikanwa se "glue yemhando yeoxime". Zvakanakira zvayo ndeizvi: hapana hwema hwakanyanya, kunamira zvakanaka pazvinhu zvakasiyana-siyana. Zvakashata: ngura yemhangura.
Zvichienderana nekushandiswa kwezvigadzirwa zvakakamurwa kuita: chisimbiso chechimiro, chisimbiso chinodzivirira mamiriro ekunze, chisimbiso chemusuwo nehwindo, chisimbiso chemusuwo, chisimbiso chinodzivirira moto, chisimbiso chinodzivirira ganda, chisimbiso chekupisa kwakanyanya.
Zvichienderana neruvara rwechigadzirwa, mativi acho ndeaya: ruvara rwechinyakare dema, porcelain chena, rinoonekera, sirivha grey mhando ina, mamwe mavara atinogona kuita zvichienderana nezvinodiwa nevatengi.
Kune mamwe marudzi akasiyana-siyana e silicone sealant, akanyanya kufambira mberi mune tekinoroji zvakare. Rumwe rudzi, runonziinonzwa kumanikidzwasilicone sealant, ine simba rinogara riripo uye inonamira nekudzvanya nemaune - nemamwe mazwi, kunyangwe ichigara "inonamira," hainamati kana chimwe chinhu chikangoipwanya kana kuimisa. Imwe mhando inonziUV or mwaranzi yakarapwasilicone sealant, uye inoshandisa chiedza che ultraviolet kurapa sealant. Pakupedzisira,thermosetisilicone sealant inoda kupiswa kuti ikwanise kupora.
Silicone sealant inogona kushandiswa mumhando dzakasiyana-siyana dzekushandisa. Rudzi urwu rwesealant runowanzo shandiswa mumotokari nezvimwe zvinoshandiswa, zvakaita sekubatsira pakuvhara injini, ine kana isina magasket. Nekuda kwekuchinjika kwayo kwakanyanya, sealant isarudzo yakanaka kune zvakawanda zvekuzvifadza kana mabasa emaoko.
Nguva yekutumira: Zvita-29-2023
