Kusimba simba: inozivikanwawo sekuti tensile simba. Rinoreva simba rinodiwa pachikamu chimwe chete kuti rabha irebe kusvika kune imwe hurefu, kureva kuti, kurebesa kusvika pa100%, 200%, 300%, 500%. Inoratidzwa muN/cm2. Ichi chiratidzo chakakosha chemuchina chekuyera kusimba uye kusimba kwerabha. Iyo yakakura kukosha kwayo, zviri nani kusimba kwerabha, zvichiratidza kuti rudzi urwu rwerabha harunyanyi kutarisana ne elastic deformation.
Kuramba misodzi: Kana zvigadzirwa zverabha zvikatsemuka panguva yekushandiswa, zvinozobvaruka zvakanyanya uye pakupedzisira zvinoraswa. Saka kuramba kubvarura zvakare yakakosha mechaniki kuita chiratidzo chezvigadzirwa zverabha. Kuramba kubvarura kunowanzoyerwa nekoshi yekudzivirira kubvarura, izvo zvinoreva simba rinodiwa pahukobvu hweyuniti (cm) yerabha kubvarura pakacheka kusvika yatyoka, inopimwa neN/cm. Zvechokwadi, iyo yakakura kukosha, zviri nani.
Adhesion uye simba rekunamatira: Simba rinodiwa kupatsanura mativi maviri ekubatanidza ezvigadzirwa zverabha (zvakadai senamo nemucheka kana jira nejira) inonzi adhesion. Kukura kwekunamatira kunowanzoyerwa nesimba rekunamatira, iro rinoratidzwa sesimba rekunze rinodiwa pane imwe unit unit apo maviri ekubatanidza nzvimbo yemuenzaniso akaparadzaniswa. Chikamu chekuverenga chiN/cm kana N/2.5cm. Simba rekunamira chinhu chakakosha chemuchina wekuita mucherechedzo muzvigadzirwa zverabha zvakagadzirwa nedonje kana mamwe machira efayibha senge skeleton zvinhu, uye chokwadi, iyo yakakura kukosha, zviri nani.
Pfeka kurasikirwa: inozivikanwawo seimwe yekudzikisira kupfeka, ndiyo huru yemhando chiratidzo chekuyera kupfeka kuramba kwezvinhu zverabha, uye kune nzira dzakawanda dzekuyera nekuzviratidzira. Parizvino, China inonyanya kutora nzira yeAkron abrasion test, iyo inosanganisira kupokana pakati pevhiri rerabha uye yakajairwa kuomarara vhiri rekukuya (Shore 780) pasi peimwe kona yekurerekera (150) uye imwe mutoro (2.72kg) kuona mapfekero. huwandu hwerabha mukati meimwe sitiroko (1.61km), inoratidzwa mucm3 / 1.61km. Iyo diki kukosha iyi, zviri nani kupfekedza kuramba kwerabha.
Brittle tembiricha uye girazi shanduko tembiricha: Aya ndiwo maratidziro emhando yekuona kutonhora kwerabha. Rubha inotanga kuoma pasi pe zero madhigirii celsius painopinzwa, ichideredza zvakanyanya kusimba kwayo; Sezvo tembiricha iri kuramba ichidzikira, inoomesa zvishoma nezvishoma kusvika painorasika zvachose, kungofanana negirazi, iro rine brittle uye rakaoma, uye rinogona kupwanyika pakubata. Tembiricha iyi inodaidzwa kuti girazi rekuchinja tembiricha, inova tembiricha yakaderera yekushandisa yerabha. Muindasitiri, tembiricha yegirazi yekuchinja kazhinji haina kuyerwa (nekuda kwenguva refu), asi tembiricha yebrittle inoyerwa. Tembiricha apo rabha rinotanga kutsemuka mushure mekuomeswa nechando patembiricha yakaderera kwenguva yakati rebei uye pasi peimwe simba rekunze rinonzi brittle tembiricha. The brittle tembiricha inowanzokwira kupfuura tembiricha yegirazi, uye kudzika kweiyo brittle tembiricha, zviri nani kutonhora kwerabha iyi.
Kutsemuka tembiricha: Mushure mekunge rabha ichipisa kune imwe tembiricha, iyo colloid ichatsemuka, uye tembiricha iyi inonzi tembiricha yekupwanya. Ichi chiratidzo chekushanda chekuyera kupisa kwekudzivirira kwerabha. Iyo yakakwirira kupisa kwekushisa, zviri nani kupikisa kupisa kwerabha iyi. Iyo chaiyo yekushanda tembiricha yemhando yerabha iri pakati pe brittle tembiricha uye tembiricha yekupwanya.
Anti kuzvimba pfuma: Zvimwe zvigadzirwa zverabha zvinowanzosangana nezvinhu zvakadai seasidhi, alkali, mafuta, nezvimwewo panguva yekushandiswa, izvo zvinoita kuti zvigadzirwa zverabha zviwedzere, nzvimbo inonamira, uye pakupedzisira zvigadzirwa zvinoraswa. Kuita kwezvigadzirwa zverabha mukupikisa mhedzisiro yeasidhi, alkali, mafuta, nezvimwe zvinonzi anti kuzvimba. Pane nzira mbiri dzekuyera kuzvimba kuramba kwerabha: imwe ndeyekunyudza sampu yerabha mune yemvura yepakati senge acid, alkali, mafuta, nezvimwewo, uye mushure meimwe tembiricha nenguva, kuyera huremu hwayo (kana vhoriyamu) kuwedzera. rate; Iyo idiki kukosha kwayo, zviri nani kuramba kwerabha pakuzvimba. Imwe nzira ndeyekuiratidza nereshiyo yekusimba kwesimba mushure mekunyudzwa kusimba rekusimba risati ranyudzwa, iyo inonzi acid (alkali) kuramba kana mafuta kuramba coefficient; Iyo yakakura coefficient iyi, zviri nani kuramba kwerabha pakuzvimba.
Kuchembera koefficient: Iyo yekuchembera coefficient chiratidzo chekuita chinoyera kuchembera kuramba kwerabha. Iyo inoratidzirwa sereshiyo yechimiro chemuviri uye mekiniki zvivakwa (tensile simba kana chigadzirwa chekusimba kwesimba uye kureba) yerabha mushure mekuchembera pane imwe tembiricha uye kweimwe nguva yenguva. Iyo yakakura yekuchembera coefficient inoratidza yakanaka kuchembera kuramba kweiyi rabha.
Nguva yekutumira: Zvita-06-2024
