Chii chinonzi Nitrile Rubber?
Nitrile rabha inogadzirwa kubva ku butadiene uye acrylonitrile ne emulsion polymerization. Iyo lotion inonyanya kugadzirwa nelotion polymerization pane yakaderera tembiricha. Nokudaro, kupikisa kwayo kupfeka uye kupisa kupisa kwakasimba uye kunamatira kwayo kwakanaka. Zvishoma nezvishoma inova yakakosha elastic zvinhu mumotokari, ndege, petroleum, fotokopi, uye mamwe maindasitiri.
Butadiene monomer ine matatu akasiyana cheni zvimiro: CIS, trans, uye 1,2-yakapiswa mapoka. Kazhinji, trans in nitrile rabha zvigadzirwa zvinosvika 78%. Pamusoro pezvo, chimiro chayo cheketani yemamorekuru ine boka recyano, saka kushomeka kwayo kwemafuta kuri nani pane iyo yerabha yakawanda. Marabha aya anosanganisira natural rubber, neoprene, uye styrene-butadiene rubber; Pakati pavo, kuramba kwemafuta kunonyanya kutariswa kumafuta emaminerari, mafuta emvura, mhuka nemafuta emichero, uye solvent.
Kuita kuri pachena kweNitrile ndiko kuramba kwemafuta. Nekuramba kwayo kwemafuta kwakanaka, nitrile rabha inowanzoshandiswa kugadzira zvigadzirwa zverabha zvisingaite mafuta. Nitrile rabha inogona kushandiswa zvakanyanya kugadzira zvigadzirwa zvakasiyana-siyana zverabha zvinodzivirira mafuta, zvinosanganisira zvakasiyana-siyana zvemafuta-resistant gaskets, maoko, flexible packaging, flexible hose, kudhinda nekudhaya machira, cable rabha zvinhu, nezvimwe.
Imwe mukana wezvigadzirwa zverubha zve nitrile ndezvekuti ine tembiricha yepamusoro yebasa kana ichienzaniswa nemamwe marubha, uye tembiricha yavo yenguva refu yekushanda inogona kusvika 120 ℃; Iyo yakaderera girazi tembiricha yekuchinja inogona kusvika - 55 ℃. Panewo zvimwe zvisingabatsiri. Yayo Panguva imwecheteyo, kushanda kwayo kwekudzivirira hakuna kunaka uye elasticity yayo yakaderera.
Chii chinonzi Silicone Rubber?
Zita reChirungu resilica gel iSilica gel kana Silica, iyo kemikari formula ndeye mSiO2 nH2O, uye inogona zvakare kunzi silica gel. Icho chinhu chinoshambadza chine chiitiko chepamusoro, uye chimiro chayo chenyama ndeye amorphous. Silica gel inowanzojeka kana mukaka chena granular yakasimba; Chimiro chakakosha uye chinovhura porous. Ichi chimiro chinopa mamiriro akanaka ekushambadza nhamba yakakura yezvinhu, uye ine yakanaka adsorption. Mukuwedzera, inogonawo kuchinjwa kuva hydrated silica gel, iyo yakasimba. Nhanho chaiyo ndeyekuwedzera dilute sulfuric acid (kana hydrochloric acid) kune aqueous mhinduro ye sodium silicate mune static state. Zvadaro geza maion e electrolyte, akadai seNa + uye SO42 - (Cl -) nemvura yakachena. Mushure mekuoma, silica gel inogona kuwanikwa. Kuti utsanangure kusimba kweiyo adsorption, kutora mvura semuenzaniso, iyo general adsorption kugona inogona kusvika ku40% uye yakasimba inogona kusvika 300%. Nekuda kwehunhu hwesilica gel, inogona kushandiswa kuomesa gasi, kunyudza gasi, kupera mvura mumuviri, chromatography, catalyst, zvichingodaro. Uye mune chaiyo yekushandisa maitiro, ruvara rwesilica gel rwakasiyanawo. Semuenzaniso, kana cobalt chloride yakawedzerwa: ibhuruu mumamiriro akaoma, tsvuku mushure mekutora mvura, uye inogona kushandiswa kakawanda. Kana iwe uchitsvaga kuunza ichi chemhando yepamusoro silicone chigadzirwa mubhizinesi rako, funga Suconvey silicone rabha zvigadzirwa mutengesi yemhinduro dzekugadzira dzekuita kuti mapurojekiti ako anotevera awedzere kubereka!
Chinhu chikuru chiri mu silica gel is silica. Iyo kemikari ye silica yakagadzikana. Hainyungudike mumvura kana kusangana nemvura. Nekuda kwehunhu hwesilica, silica gel haisi nyore kupisa uye zvimiro zvayo zvakadzikama. Munguva yekushanda kwekugadzirisa, guruva riri mumusangano rinofanira kudzorwa mukati mehuwandu hwe10mg / m3. Panguva imwecheteyo, vashandi vanofanirwa kusimbisa mhepo uye kupfeka masiki. Uye zvakare, nekuda kweiyo yakasimba adsorption kugona kwesilica gel, zviri nyore kukonzera kuoma kweganda remunhu, saka vashandi vanofanirwa kupfeka zvipfeko zvekudzivirira panguva yekushanda kuti varambe kuomesa. Kana iwe ukadurura silica gel mumaziso ako nekuda kwekushanda kusina hanya, unofanirwa kugeza maziso ako nemvura yakawanda. Muzviitiko zvakakomba, unofanira kuenda kuchipatara nenguva. Sezvambotaurwa pamusoro apa, mavara e silica gel akasiyana pasi pemamiriro akasiyana uye nyika. Pakati pavo, blue silica gel ine zvishoma zvecobalt chloride, iyo inogona kuita chepfu. Naizvozvo, zvinodikanwa kuti usasangana nechikafu kana inhalation. Kana yangopinda mumuviri, inofanirwa kuenda kuchipatara kunorapwa nenguva. Kana silica gel inoshambadza mhute yemvura kana zvimwe zvipenyu mukati panguva yekuchinjisa, iyo adsorption kugona kwayo inogona kushomeka, asi inogona kushandiswa zvakare mushure mekuzvarwa patsva.
Ndeupi Misiyano Pakati peNitrile Rubber neSilicone Rubber?
Kusiyana mukuumbwa:
-Idzo mhando mbiri huru dzerabha isilicone uye nitrile rubber. Ose ari maviri ane ega ega ega ega ega ega anoita kuti ave akakodzera kune akasiyana maapplication.
Silicone rabha inogadzirwa kubva papolymer yesilicon, okisijeni, uye zvimwe zvinhu, senge kabhoni nehydrogen. Irabha yekugadzira inochinjika, yakasimba, uye isingapise kupisa. Inogona kushandiswa mumhando dzakasiyana siyana dzekushandisa, senge machubhu uye hoses, magetsi ekudzivirira, cookware, mishonga yekurapa, uye zvinonamira.
Nitrile rubber inogadzirwa kubva kucopolymer yeacrylonitrile uye butadiene. Irabha rekugadzira risingamirire mafuta uye rine simba rakanaka remagetsi. Inogona kushandiswa mune akawanda maapplication apo kupokana neoiri kana makemikari kunodiwa, sezvisimbiso mumainjini emotokari uye gaskets mumapombi ekugadzirisa.
Kusiyana kweZvivakwa:
-Silicone uye nitrile rubber ese ari maviri ekugadzira elastomers. Vanogovana zvivakwa zvakawanda, asi pane misiyano mishoma pakati pavo.
Imwe yemisiyano yakakosha ndeyekuti silicone is inorganic polymer, nepo nitrile rubber iri organic polymer. Musiyano uyu unobva pakuti silicone ine silicon - metalloid - semusana wayo, nepo nitrile rubber musana une maatomu ecarbon.
Iwo akasiyana makemikari akaumbwa esilicone uye nitrile rabha anopa mutsauko unozivikanwa wenyama. Silicone ine density yakaderera pane nitrile rubber, zvinoreva kuti yakareruka. Iyo ine zvakare yakakwira Young's modulus, zvichireva kuti yakanyanya kuomarara. Mukupesana, nitrile rabha ine nani abrasion kuramba uye kubvarura simba kupfuura silicone.
Kune zvakare mimwe misiyano yekushanda pakati pezvinhu zviviri izvi. Silicone inokwanisa kumira tembiricha yakakwira kupfuura nitrile rabha - kusvika 204°C zvichienzaniswa ne121°C yenitrile rabha - zvichiita kuti ive yakakodzera kushandiswa munzvimbo dzine tembiricha yakadai semaapplications emotokari. Nitrile rubber, kune rumwe rutivi, inoita zviri nani kudarika silicone maererano nemafuta uye mafuta ekudzivisa; inogonawo kushandiswa mukubatana nezvigadzirwa zvekudya pasina kutya kusvibiswa.
Musiyano muDurability:
-Nitrile rubber inodhura kudarika silicone rubber, asi haina kutambanudza zvakanyanya uye haina kusimba. Silicone rabha inodhura kupfuura nitrile rabha, asi ine huwandu hukuru hwekutambanudza uye kusimba.
Musiyano muTear Resistance:
-Nitrile rubber ine simba rakanaka rekupisa uye rinowanzoshandiswa mune zvigadzirwa zvinoda kutarisana nekupisa kwakanyanya, zvakadai semitts yevheni uye magirafu. Asi silicone rabha yekudzivirira kupisa ishoma pane nitrile rabha, tembiricha yesilicone rubber inowanzo diki pane nitrile rabha.
Kusiyana kweAbrasion Resistance:
-Izvi zvinhu zviviri zvinowanzo shandiswa pamwechete nekuti zvine zvimiro zvakasiyana zvinogona kushandiswa mukushandisa kwakasiyana. Semuenzaniso, nitrile rubber inogona kushandiswa kune zvigadzirwa zvinoda kusanzwa nemafuta kana mvura, nepo silicone rabha inokodzera zvirinani kune zvigadzirwa zvinoda kuramba corrosion.
Kusiyana kweApplications:
-Mumwe wemisiyano yakakosha pakati pesilicone uye nitrile rubber ndeyekuti silicone irabha rekugadzira, nepo nitrile irabha rechisikigo. Izvi zvinoreva kuti nitrile rabha inogadzirwa kubva ku latex, inobva mumiti, nepo silicone inogadzirwa kubva mukugadzira zvinhu.
Uyu mutsauko mukuumbwa unotungamira kune huwandu hwezvinhu zvakasiyana kune imwe neimwe yerudzi rwerubha. Semuenzaniso, nitrile rubber inonyanya kurwisana nemafuta nemakemikari kupfuura silicone. Silicone, kune rumwe rutivi, ine yakakwirira tembiricha kuramba kupfuura nitrile.
Saka, kana uchisarudza pakati pesilicone uye nitrile rabha yechikumbiro, zvakakosha kufunga kuti ndezvipi zvivakwa zvakanyanya kukosha kune chaiyo basa riripo.
Kusiyana mumutengo:
-Kune zvikonzero zvishoma nei silicone inodhura kupfuura nitrile rubha. Chekutanga, silicone ine yakanyanya kunyungudika pane nitrile rabha, zvinoreva kuti inogona kumira tembiricha yakakwira. Chechipiri, silicone inonyanya kupikisa kudzikira kubva kuUV mwenje uye zvimwe zvakatipoteredza zvinhu. Chekupedzisira, silicone chinhu chakanyanya elastic kupfuura nitrile rabha, zvichireva kuti inogona kutambanudzwa mberi isina kutyora.
Kusiyana kwekugadzirwa:
-Silicone rabha irabha yekugadzira yakagadzirwa nesilicone, polymer yesilicon uye oksijeni. Silicone rubber anoshandiswa zvakanyanya muindasitiri nekuda kwekusiyana-siyana uye kuramba kutonhora kwakanyanya. Izvo zvinoshandiswa mune zvese kubva kune gaskets uye zvisimbiso kune magetsi ekudzivirira uye zvigadzirwa zvekurapa.
Nitrile rabha, inozivikanwawo seBuna-N kana NBR, irabha rekugadzira rakagadzirwa kubva ku nitrile, copolymer yeacrylonitrile uye butadiene. Nitrile rubber inoshingirira kumafuta, mafuta, nemamwe makemikari. Iwo anoshandiswa mumagaskets, zvisimbiso, hoses, uye zvimwe zvigadzirwa uko kupokana neoiri kunodiwa.
Musiyano mukusimba:
Kana zvasvika pakusimba, zviviri zvezvinonyanya kufarirwa zvinhu zvinoshandiswa ndeye silicone uye nitrile rubber. Zvese zviri zviviri izvi zvinhu zvine zvazvo zvakasarudzika mabhenefiti zvinoita kuti zvive zvakanaka kune akasiyana maapplication. Heino kukurumidza kudonhedza kwemutsauko wakakosha pakati pezvinhu zviviri izvi zvinogoneka:
-Silicone inogadzirwa kubva kusilicon, chinhu chinowanzoitika chinogona kuwanikwa mujecha nedombo. Ichowo chimwe chezvinhu zvakawandisa zvakanyanya muPasi pasi. Izvi zvinoita kuti silicone ive yakanyanya kudzokororwa sosi.
-Nitrile rubber inogadzirwa nepetroleum, isingadzokeri sosi. Nekudaro, nitrile rabha inogona kudzokororwa zvakare muzvigadzirwa zvitsva pakupera kwehupenyu hwayo.
-Silicone ine yakanyanya kuderera kabhoni tsoka kana ichienzaniswa nemamwe machira ekugadzira. Muchokwadi, kugadzira silicone inoburitsa 60% yakaderera kabhoni dhaidhiyo pane kugadzira nitrile rabha.
-Nitrile rubber inonyanya kupikisa kupisa kupfuura silicone, ichiita kuti ive yakanaka kune zvikumbiro apo kutonhora kwakanyanya kunonetsa.
-Silicone ine huwandu hwakawanda hwekushivirira kwekushisa (-40 ° C kusvika 230 ° C), zvichiita kuti ive yakakodzera kune zvose zvinotonhora uye zvinopisa.
-Nitrile rubber inonyanya kushingirira kune abrasion pane silicone, ichiita kuti ive yakakodzera kune maapplication uko kupfeka uye kubvaruka kuri kunetseka.
Musiyano mukugadziriswazve:
-Kune misiyano yakawanda pakati pesilicone uye nitrile rubber, asi musiyano wakakosha ndewekuti silicone inodzokororwa asi nitrile rubber isiri. Silicone inogona kudzokororwa kuburikidza nemaitiro anonzi pelletization, apo zvinhu zvinonyungudutswa pasi uye kuumbwa kuita mapellet madiki anogona kushandiswa kugadzira zvigadzirwa zvitsva. Nitrile rubber, kune rumwe rutivi, haigone kudzokororwa nenzira iyi nekuda kwechimiro chayo chemakemikari. Izvi zvinoreva kuti kana zvigadzirwa zverabha zvenitrile zvaraswa, zvinozoguma zvave mumarara umo zvinotora makore akawanda kuti zviparare.
Zvakanakira uye zvakaipira kuenzanisa:
Nitrile rabha nesilicone rabha marudzi maviri erabha anowanzo shandiswa mumashandisirwo akasiyana. Nitrile rabha chinhu chakapfava, chinochinjika kupfuura silicone rabha, inoita kuti ive yakakodzera kune mamwe maapplication. Nitrile rabha inewo hupenyu hurefu hwekutarisira kupfuura silicone rabha. Mimwe misiyano yakakosha pakati penitrile uye silicone rubber inosanganisira:
mhedziso
Nitrile nesilicone imhando mbiri dzerabha dzinowanzo shandiswa muzvigadzirwa nekuti dzine zvinhu zvakasiyana. Nitrile rabha irabha yakaoma, yakagadzirwa isingachinjiki sesilicone. Izvo zvakare kashoma kuparara muchiedza chezuva kana mumhepo uye inogona vulcanized (kuitwa chinhu chakaoma) pakupisa kwakanyanya. Silicone rabha, kune rumwe rutivi, inochinjika zvakanyanya uye inogona kumira tembiricha yakakwira. Iyo inowanzoitawo kupera uye kushanduka kwemavara kupfuura nitrile rubber.
Ehe, kusarudzwa kwezvinhu zvichave nemaitiro akasiyana siyana emaindasitiri akasiyana. Chinonyanya kukosha ndechekuti mabhizinesi anofanirwa kusarudza zvinhu zvakasiyana zvinoenderana nezvavanoda.
