Kana zvasvika pakusarudza zvinhu zvechigadzirwa chako chinotevera, zvakakosha kuyera zvakanakira nezvayakaipira zvesarudzo yega yega. Mune ino blog post, tichave tichienzanisa zvinhu zviviri zvakakurumbira: silicone rabha uye polyurethane.
Chii chinonzi silicone rabha uye polyurethane?
Silicone rabha uye polyurethane maviri anoshandiswa zvakanyanya elastomer. Iwo ese ari maviri akasimba zvinhu zvinogona kushandiswa kune akasiyana maapplication, asi pane akakosha misiyano pakati pawo.
Silicone rabha irabha rekugadzira rakagadzirwa kubva kusilicone, musanganiswa wesilicon uye okisijeni, zvichireva kuti inokwanisa kudzoka kuchimiro chayo chepakutanga mushure mekutambanudzwa kana kudzvanywa. Silicone rabha ine zvinhu zvakawanda zvinobatsira, zvinosanganisira kupisa kwakanyanya, kuderera kwehupfu, uye kuramba kumamiriro ekunze uye kuchembera. Inoshandiswa mumhando dzakasiyana dzekushandisa, kusanganisira zvisimbiso, gaskets, magetsi ekudzivirira, uye zvikamu zvemotokari.
Polyurethane imwe yerabha yakagadzirwa kubva ku polyurethane, musanganiswa wecarbon, hydrogen, uye oxygen, asi haichinjiki sesilicone rabha. Polyurethane zvakare ine zvakawanda zvinobatsira zvivakwa, zvinosanganisira yakakwirira abrasion kuramba uye kuchinjika. Inoshandiswa mumhando dzakasiyana dzekushandisa senge inoshanduka furo makushion, machira, anonamira, uye sealants.
Ndeupi musiyano mukuru pakati pesilicone rabha uye polyurethane?
Kana zvasvika pakusarudza zvinhu zvechigadzirwa chako, zvakakosha kufunga nezvemaitiro ega ega sarudzo. Izvi zvinonyanya kuitika pakusarudza pakati pesilicone rubber uye polyurethane. Kunyangwe zvese zviri zviviri zviri sarudzo dzakanakisa kune zvakawanda zvigadzirwa, zvine hunhu hwakasiyana hunogona kuita kuti imwe ive yakakodzera pane imwe.
Mumwe musiyano wakakosha pakati pesilicone rabha uye polyurethane ndeye durometer, kana kuoma. Silicone rabha ine huwandu hwakasiyana hwekuoma, kubva kune yakapfava kusvika kune yakaoma kwazvo. Izvi zvinoita kuti zvive zvakanaka kune zvigadzirwa zvinoda kuve zvakapfava kana kuchinjika, senge gaskets kana zvisimbiso. Polyurethane zvakare ine huwandu hwakasiyana hwekuoma, asi sarudzo dzayo dzakaomesesa dzakaoma kupfuura sarudzo dzakaoma dzesilicone rabha. Izvi zvinoita kuti polyurethane ikwane zvirinani kune zvigadzirwa zvinoda kusimba, semavhiri kana makanda.
Mumwe mutsauko pakati pesilicone rabha uye polyurethane ndiyo nzira yekurapa. Silicone rubber inorapwa nenzira dzakasiyana, dzinosanganisira kupisa, kupisa kwekamuri vulcanization, uye nemwaranzi. Polyurethane ine mamwe mashoma mashoma ekurapa maitiro.
Chekupedzisira, Silicone rabha kazhinji inodzivirira kupisa uye yakasimba kupfuura polyurethane, asi zvakare inodhura. Polyurethane, kune rumwe rutivi, inonyanya kuchinjika uye ine yakaderera density, zvichiita kuti ireruke muhuremu.
Ndezvipi zvinobatsira zvesilicone rubber?
Silicone rabha ine akasiyana mabhenefiti anoita kuti ive yakanakira kushandiswa mumaindasitiri mazhinji akasiyana uye maapplication. Imwe yeakanakisa mabhenefiti esilicone rubber kuramba kwayo kune tembiricha yakanyanyisa. Izvi zvinoreva kuti inogona kushandiswa munzvimbo dzakanyanya kupisa pasina kutya kukuvadzwa kana kuderedzwa. Pamusoro pezvo, silicone rabha inodzivirira zvakanyanya kumakemikari, zvichiita kuti ive chinhu chakanakira kushandiswa mumamiriro ezvinhu apo pane mukana wekusangana nemakemikari ane hutsinye.
Ndezvipi zvinobatsira zve polyurethane?
Polyurethane chinhu chakasimba, chakasimba chinogona kushandiswa kune zvakasiyana-siyana zvekushandisa. Inoshingirira kubvaruka uye kubvongodzwa, zvichiita kuti ive sarudzo yakanaka yezvinhu zvekupfeka zvakanyanya senge zvidimbu zvemotokari, magiya, uye rollers. Polyurethane zvakare haina mvura uye inodzivirira kurwiswa kwemakemikari, zvichiita kuti ive yakakodzera kushandiswa kwekunze.
Kukanganisa kwezvakatipoteredza: zvinokanganisa sei zvakatipoteredza?
Kunyangwe ese ari maviri polyurethane nesilicone rabha ari ekugadzira zvinhu akagadzirwa kuburikidza nepolymerization, ane akasiyana zvivakwa zvinoita kuti imwe neimwe iwedzere kukodzera kune chaiyo maapplication. Musiyano mukuru pakati pezviviri izvi ndewekuti polyurethane ndeye thermoset nepo silicone rabha iri thermoplastic. Izvi zvinoreva kuti kana polyurethane yapora, haigone kunyungudutswa uye kugadziridzwa senge silicone rabha inogona. Mumwe mutsauko wakakosha ndewekuti polyurethane ine kabhoni nepo silicone rubha haina.
Kana zvasvika pakukanganisa kwezvakatipoteredza, zvese zviri zviviri zvine zvazvakanakira nezvazvakaipira. Kudivi rakanaka, hapana makemikari ane muchetura kana masimbi anorema saka anogona kuraswa zvakachengeteka pasina kukuvadza nharaunda. Nekudaro, nekuti ese ari maviri ekugadzira zvinhu akagadzirwa kubva mupetroleum-based zvigadzirwa, haana biodegradable uye acharamba ari mumarara kwemakore mazhinji.
Ndeipi iyo silicone rabha ndiyo yakanakisa sarudzo?
Kune akawanda marudzi erabha, uye imwe neimwe ine yakasarudzika zvivakwa zvinoita kuti ikwane zvirinani kune mamwe maapplication. Silicone rabha ndeimwe yemhando dzakasiyana-siyana dzerubha, uye ine huwandu hwakawanda hwekushandisa. Heano mamwe mamiriro ezvinhu apo silicone rabha ndiyo yakanakisa sarudzo:
-Paunoda rabha rinogona kutsungirira tembiricha yakanyanyisa: Silicone rabha inogona kumira tembiricha kubva -55 ° C kusvika +300 ° C, zvichiita kuti ive yakanaka kune maapplication uko mamwe marubha angatadza.
-Paunenge uchida rabha rinopesana nemakemikari: Silicone rubber inopesana nemakemikari akawanda akasiyana, anosanganisira mafuta, magirisi, uye acids. Izvi zvinoita kuti ive sarudzo yakanaka kune maapplication uko mamwe marubha angakuvadzwa.
-Paunenge uchida rabha ine yakanaka magetsi ekudzivirira zvivakwa: Silicone rabha yakanakisa insulator uye inogona kushandiswa mumashandisirwo apo zvinhu zvemagetsi zvinoda kuparadzaniswa kubva kune mumwe.
-Paunenge uchida rabha inoshanduka: Silicone rabha inonyanya kuchinjika kupfuura mamwe marudzi erubha, ichiita kuti ive yakanaka kune maapplication uko kuchinjika kunodiwa.
Ndeipi polyurethane sarudzo yakanaka?
Polyurethane rubber chinhu chakasiyana-siyana chinogona kushandiswa mumhando dzakasiyana dzekushandisa. Zvakadaro yakanakisa abrasion kuramba, zvichiita kuti zvive zvakanaka kune zvigadzirwa zvinozoona kushandiswa kwakanyanya. Iyo zvakare ine yakanaka makemikari kuramba, zvichiita kuti ive sarudzo yakanaka kune zvigadzirwa zvinosangana nezvinhu zvine njodzi. Polyurethane zvakare yakanaka insulator, ichiita kuti ive yakanaka kune zvigadzirwa zvinoda kudzivirira kubva kunjodzi dzemagetsi.
Ungasarudza sei pakati pesilicone rubber uye polyurethane?
Uyu mubvunzo wakajairika usina mhinduro iri nyore. Izvo zvinoenderana nekushandiswa uye chaiwo zvivakwa zvinodiwa. Heano mamwe mirairo yakajairika:
Kana kupisa kwakanyanya kunodiwa, enda nesilicone rubber. Inogona kumira kutonhora kusvika 204°C (400°F). Polyurethane inogona kushivirira tembiricha inosvika 93°C (200°F). Zvakadai sekushisa kutamisa silicone rubber rollers.
Kana yakaderera tembiricha kuchinjika kuchidikanwa, sarudza silicone rubber. Inoramba ichichinjika kusvika -55°C (-67°F). Polyurethane inova yakaoma uye brittle pa -40°C (-40°F).
Kana makemikari kuramba ari anofanirwa, zvakare, tora silicone rabha. Inobata zvakanaka mumafuta, girizi, peturu, uye hydraulic fluid. Polyurethane haina kumira zvakanaka kumafuta negirizi asi inoita zvakanaka nealiphatic hydrocarbons sepeturu.
Polyurethane inodarika silicone rabha mukuramba abrasion, simba rekubvarura, uye kusimba kwesimba. Kana zvinhu izvi zvakakosha, enda ne polyurethane. Zvakadai se: Anti-slip mat yekuchera chikuva, PU vibrating screen.
mhedziso
Kubva muhurukuro iri pamusoro, zviri pachena kuti silicone rabha ine zvakawanda zvakanakira pane polyurethane. Silicone rabha inonyanya kuchinjika, yakasimba, uye inogona kumira tembiricha yakakwira kupfuura polyurethane. Iyo ine zvakare akasiyana-siyana ekushandisa uye inogona kugadzirwa kuti isangane nezvinodiwa chaizvo. Nekudaro, silicone rabha inodhura kupfuura polyurethane uye haisi nyore kuwana.
