Sezvakagadzirwa zvematayi, rabha inoreva yakanyanyisa elastic polymer zvinhu zvine inodzoreredzwa deformation.Iyo elastic pane tembiricha yekamuri, inogona kuburitsa yakakura deformation pasi pekuita kwesimba diki rekunze, uye inogona kudzokera kune yayo yekutanga chimiro mushure mekubviswa kwesimba rekunze.Rubber ndeye amorphous polymer zvachose.Tembiricha yaro yekuchinja kwegirazi yakadzikira uye huremu hwayo hwemamorekuru hunowanzokura, kupfuura mazana ezviuru.
Rubha rakakamurwa kuva mhando mbiri: natural rabha uye synthetic rubber.Rabha rechisikigo rinogadzirwa nekubvisa chingamu kubva mumiti yerabha, huswa hwerabha uye zvimwe zvinomera;synthetic rubber inowanikwa ne polymerization yemamonomers akasiyana.
Isu tese tinoziva kuti kuumbwa kwerabha kune yakakwira tembiricha zvinodiwa.Kazhinji, kuitira kuti ive nechokwadi chekugadzirisa rabha, mafekitori erabha anowanzo shandisa majenareta ekupisa anopisa kupisa uye kuumba rabha.
Sezvo rabha iri inopisa-inonyunguduka thermosetting elastomer, plastiki ndiyo inopisa-inonyunguduka uye inotonhora-inomisa elastomer.Naizvozvo, mamiriro ekugadzira ezvigadzirwa zverabha anoda kwakakodzera tembiricha uye humidity kugadzirisa chero nguva, zvikasadaro misiyano yemhando yechigadzirwa inogona kuitika.Iyo steam jenareta inoita basa rakakosha mune izvi.
Chero ani akambosangana nerubha anoziva kuti rubber pachayo inoda kutsigirwa kwekushisa kwepamusoro kuti iite, uye pakugadzira zvigadzirwa zverabha, zvakakoshawo kushandisa mapurasitiki anopisa uye anotonhora, izvo zvinoda kugadziriswa kwekushisa panguva yekugadzirwa.Iyo steam jenareta inogona kuita basa mukuita uku.Ichi chigadzirwa chakagadziridzwa nemugadziri chinogona kuwana hungwaru kutonga uye chinogona kugadzirisa tembiricha uye hunyoro zvinoenderana neakasiyana zvinhu, nekudaro zvichiita kuti kugadzirwa kwemhando yezvigadzirwa zverabha zvikwire.
Nobeth steam jenareta inogona kuenderera mberi ichiburitsa tembiricha yepamusoro ine tembiricha inokwira kusvika 171°C, iyo inonyatsokodzera kugadzirwa kwezvigadzirwa zverabha.