1. Tlhaloso ea rabara
Lentsoe "rabara" le tsoa puong ea India cau uchu, e bolelang "sefate se llang".
Tlhaloso ho ASTM D1566 ke ka tsela e latelang: rabara ke thepa e ka khonang ho hlaphoheloa ka potlako le ka katleho tlas'a deformation e kholo 'me e ka fetoloa.Rabara e fetotsoeng e ke ke ea (empa e ka) qhibiliha ka har'a metsoako e belang e kang benzene, methyl ethyl ketone, motsoako oa ethanol toluene, joalo-joalo. Rabara e fetotsoeng e ile ea otlolloa ho habeli bolelele ba eona ba pele mochesong oa kamore 'me ea bolokoa motsotso o le mong.Ka mor'a ho tlosa matla a ka ntle, e ne e ka hlaphoheloa ka nako e ka tlaase ho makhetlo a 1,5 bolelele ba eona ba pele ka motsotso o le mong.Phetoho eo ho buuoang ka eona tlhalosong e hlile e bua ka vulcanization.
Ketane ea limolek'hule ea rabara e ka kopanngoa.Ha rabara e kopantsoeng le sefapano e holofetse tlas'a matla a ka ntle, e na le matla a ho hlaphoheloa kapele, 'me e na le thepa e ntle ea' mele le ea mechine le botsitso ba lik'hemik'hale.Rabara e kopantsoeng hanyenyane ke thepa e tloaelehileng e phahameng ea rekere.
Rubber ke thepa ea polymer, e nang le litšobotsi tse ngata tse tloaelehileng tsa mofuta ona oa thepa, tse kang ho fokotseha ho tlaase, ho kenella ka tlaase ho metsi, ho kenya letsoho, viscoelasticity le botsofali ba tikoloho.Ho phaella moo, rabara e bonolo ebile e tlaase ka thata.
2. Sehlopha se seholo sa rabara
Rubber e arotsoe ka rabara ea tlhaho le rabara ea maiketsetso ho latela lisebelisoa tse tala.E ka aroloa ka boloko rabara e tala, latex, rabara e metsi le rabara ea phofo ho latela sebopeho.
Latex ke ho hasana ha metsi a colloidal a rabara;Rabara ea metsi ke oligomer ea rabara, eo ka kakaretso e leng mokelikeli oa viscous pele o senyeha;
Rabara ea phofo e sebelisoa ho fetola latex hore e be phofo bakeng sa ho kopanya le ho sebetsa.
Rabara ea thermoplastic e hlahisitsoeng ka bo-1960 ha e hloke ho senyeha ha lik'hemik'hale, empa e sebelisa lisebelisoa tsa bohlokoa tsa polasetiki ea thermoplastic ho theha.Rabara e ka aroloa ka mofuta o akaretsang le mofuta o khethehileng ho latela tšebeliso.
3. Tšebeliso ea rabara
Rubber ke thepa ea mantlha ea indasteri ea rabara, e sebelisoang haholo ho etsa lithaere,lithapo tsa rabara, litheipi,sethibelo sa rabara, lithapo le lihlahisoa tse ling tsa rabara.
4. Ts'ebeliso ea lihlahisoa tsa rabara tse nang le vulcanized
Lihlahisoa tse entsoeng ka rabara li hlahisoa ka indasteri ea likoloi.Tsoelo-pele e potlakileng ea indasteri ea likoloi le indasteri ea petrochemical lilemong tsa bo-1960 e ntlafalitse haholo boemo ba tlhahiso ea indasteri ea rabara;Lilemong tsa bo-1970, e le ho finyella litlhoko tsa lebelo le phahameng, polokeho, ho boloka matla, ho felisa tšilafalo le ho thibela tšilafalo ea likoloi, mefuta e mecha ea lithaere e ile ea khothalletsoa.Tšebeliso ea rabara e tala e baka karolo e kholo ea lipalangoang.
Ka mohlala;Lori ea Jiefang 4-tons e hloka lihlahisoa tsa rabara tse fetang 200 kg, lekareche la setulo se thata le hloka ho hlomelloa ka lihlahisoa tsa rabara tse fetang 300 kg, sekepe sa lithane tse 10000 se hloka lihlahisoa tsa rabara tse ka bang 10, 'me sefofane sa jete se hloka hoo e ka bang. 600 kg ea rabara.Lipalangoang tsa leoatleng, naheng le moeeng, ha ho motho ea ka etsang ntle le lihlahisoa tse chesitsoeng ke rabara.
Nako ea poso: Jan-03-2023