Rabha rechisikigo rinokwanisa kumira midhiya zvinosanganisira mvura yakachena, mvura yemunyu, mhepo, inert gasi, alkali, uye munyu mhinduro; zvisinei, mineral oil uye non-polar solvents ichaikuvadza. Inoita zvakanaka zvakanyanya pakudziya kwakaderera uye ine tembiricha yekushandisa kwenguva refu isingadarike 90°C. Inoshanda pa -60 °C. Shandisa muenzaniso uri pamusoro.
Mafuta emafuta anosanganisira mafuta emafuta, mafuta ekuzora, uye petroleum anogamuchirwa kune nitrile rubber. Iyo tembiricha yekushandiswa kwenguva refu ndeye 120 ° C, 150 ° C mumafuta anopisa, uye -10 ° C kusvika -20 ° C pakudziya kwakaderera.
Mvura yegungwa, maasidhi asina simba, alkalis asina simba, zvigadziriso zvemunyu, okisijeni yakanakisa uye ozone kuchembera, kuramba kwemafuta kwakaderera kune nitrile rabha asi zviri nani pane mamwe rabha, tembiricha yekushandisa kwenguva yakareba yakaderera kupfuura 90 ° C, tembiricha yekushandisa yakanyanya. hadzina kukwira kupfuura 130 °C, uye tembiricha yakaderera iri pakati -30 ne50 °C yose inokodzera chloroprene rabha.
Fluorine rabha inouyamumhando dzakasiyana-siyana, dzose dzine acid yakanaka, oxidation, oiri, uye zvinonyungudutsa. Iyo tembiricha yekushandisa kwenguva yakareba yakadzikira kupfuura 200 ° C, uye inogona kushandiswa neine acid media media pamwe nemamwe mafuta uye zvinonyungudutsa.
Iyo rabha shiti rinonyanya kushandiswa se flange gasket yemapombi kana kazhinji inoputswa manhole nemakomba emaoko, uye kudzvanywa hakuna kukura kupfuura 1.568MPa. Rubber gaskets ndiwo akapfava uye akanakisa pakubatana pakati pemhando dzese dzegaskets, uye anogona kuburitsa chisimbiso nekashoma pre-kuomesa simba. Nekuda kwekukora kwayo kana kuomarara kwakashata, iyo gasket saka inosvinwa zviri nyore kana iri pasi pekumanikidzwa kwemukati.
Mashizha erabha anoshandiswa muzvinonyungudutsa zveorganic zvakaita sebenzene, ketone, ether, zvichingodaro zvinogona kukonzera kuvharika kwekuvharika nekuda kwekuzvimba, kukura, kupfava, uye kunamira. Kazhinji, haigone kushandiswa kana chiyero chekuzvimba chiri chikuru kupfuura 30%.
Mapedhi erabha anodiwa mune vacuum uye yakaderera kumanikidza mamiriro (kunyanya pazasi 0.6MPa). Mushonga werabha wakakora uye mweya unopindika zvishoma. Kune midziyo yevacuum, semuenzaniso, fluorine rabha inoshanda zvakanyanya sechisimbiso gasket sezvo iyo vacuum level inogona kukwira kusvika 1.310-7Pa. Iyo pedhi yerabha inofanirwa kubikwa uye kupomba isati yashandiswa muvacuum renji ye10-1 kusvika 10-7Pa.
Kunyangwe rabha uye akasiyana mafirita akawedzerwa kune gasket zvinhu, nyaya huru nderekuti haisati yanyatso sunga mapores madiki aripo, uye pane diki dhigirii rekupinda kunyangwe mutengo uri mudiki pane mamwe magasket uye iri. nyore kushandisa. Naizvozvo, kunyangwe kana kudzvanywa uye tembiricha zvisina kuwandisa, haigone kushandiswa munhau inosvibisa zvakanyanya. Nekuda kweiyo carbonization yerabha uye mafirita kana ichishandiswa mune imwe yakakwira-tembiricha yemafuta svikiro, kazhinji pedyo nekupera kwekushandiswa, simba rinodzikira, zvinhu zvinova zvakasununguka, uye kupinda kunoitika pakusangana uye mukati megasket, zvichitungamira kukubika uye. utsi.Kuwedzera, pakupisa kwakanyanya, asbestos rubber sheet inonamatira kune flange yekuisa chisimbiso pamusoro, iyo inoomesa maitiro ekutsiva gasket.
Iko kuchengetwa kwesimba kweiyo gasket zvinhu kunogadzirisa kudzvanywa kweiyo gasket mune dzakasiyana midhiya mumamiriro ekupisa. Zvishandiso zvine asbestos fibers zvine zvese zviri zviviri crystallization mvura uye adsorption mvura. Pamusoro pe500 ° C, mvura yecrystallization inotanga kunaya, uye simba rakaderera. Pa 110 ° C, zvikamu zviviri kubva muzvitatu zvemvura yakashambadzirwa pakati pemafibers yakawedzera, uye simba refiber rakaderera neanenge 10%. Pa 368 ° C, mvura yese yakashambadzirwa yakawedzera, uye simba refiber rakaderera ne20%.
Simba reasbestos rubber sheet rinonyanya kukanganiswa nepakati zvakare. Semuyenzaniso, kuchinjika kusimba kwekusimba kweNo. 400 inodzivirira mafuta asbestos rabha sheet inosiyana pakati pemafuta ekuzora avhiyesheni nemafuta emuchadenga ne80%, izvo zvinodaro nekuti kuzvimba kwerabha mupepa nepeturu yendege kwakanyanya kupfuura kwendege. mafuta ekuzora. Tichifunga nezvezvambotaurwa, tembiricha yakachengeteka yekushanda uye kudzvanywa kwenzvimbo dzepamba asbestos rabha sheet XB450 i250 °C kusvika 300 °C uye 3 3.5 MPa; iyo yakanyanya tembiricha yeNo. 400 inodzivirira mafuta asbestos rubber sheet ndeye 350 °C.
Chloride uye sulfur ions zviripo mune asbestos rubber sheet. Metal flanges inogona kukurumidza kuvaka bhatiri rekuora mushure mekutora mvura. Kunyanya, mafuta-inodzivirira asbestos rubber sheet ine sulfur content iyo yakakwira kakawanda kupfuura yakajairwa asbestos rubber sheet, zvichiita kuti isakodzere kushandiswa mune zvisiri-mafuta media. Mumafuta uye zvinonyungudutsa midhiya, iyo gasket ichazvimba, asi kusvika padanho, haina mhedzisiro pakukwanisa kuvhara. Semuenzaniso, bvunzo yekunyudzwa kweawa makumi maviri nemana mumafuta emuchadenga pakupisa kwekamuri inoitwa paNo.
Nguva yekutumira: Kubvumbi-20-2023
