Injongo kunye notshintsho lokubumba irabha ekrwada

I-Rubber ine-elasticity elungileyo, kodwa le propati ixabisekileyo ibeka ubunzima obukhulu kwimveliso yemveliso.Ukuba i-elasticity ye-rubber eluhlaza ayincitshiswanga kuqala, ininzi yamandla omatshini asetyenziswa kwi-deformation elastic ngexesha lenkqubo yokucubungula, kwaye umzobo ofunekayo awunakufunyanwa.Itekhnoloji yokulungiswa kwerabha ineemfuno ezithile zeplastiki yerabha ekrwada, njengokuxuba, efuna ngokubanzi i-Mooney viscosity ejikeleze i-60, kunye nokusula irabha, efuna i-Mooney viscosity ejikeleze i-40, Kungenjalo, akuyi kusebenza kakuhle. .Ezinye ii-adhesives eziluhlaza zinzima kakhulu, zine-viscosity ephezulu, kwaye zingenalo iimpawu zenkqubo esisiseko kunye neyimfuneko - iplastiki enhle.Ukuze kuhlangatyezwane neemfuno zenkqubo, irabha ekrwada kufuneka ifakwe iplastiki ukuze inqumle ikhonkco lemolekyuli kwaye inciphise ubunzima bemolekyuli phantsi komatshini, i-thermal, ikhemikhali kunye nezinye izenzo.Ikhompawundi yeplastiki ethi iphulukane nokunwebeka kwayo okwexeshana kwaye ithambile kwaye ithambile.Kunokuthiwa ukubunjwa kwerabha eluhlaza sisiseko sezinye iinkqubo zobuchwepheshe.
Injongo yokubumba irabha ekrwada kukuba: okokuqala, ukufumana inqanaba elithile leplastiki yerabha ekrwada, iyenze ilungele ukuxuba, ukuqengqeleka, ukukhupha, ukwenza, ukuvuthulula, kunye neemfuno zeenkqubo ezinje ngodaka lwerabha kunye nerubha yesipontshi. ukuvelisa;Okwesibini kukwenza i-homogenize iplastiki yerabha ekrwada ukwenzela ukuvelisa izinto zerabha ezinomgangatho ofanayo.
Emva kweplastiki, iipropathi zomzimba kunye neekhemikhali zerabha ekrwada nazo ziyatshintsha.Ngenxa yamandla anamandla omatshini kunye ne-oxidation, i-molecular structure kunye ne-molecular weight of rubber iya kutshintsha ukuya kwinqanaba elithile, ngoko ke iimpawu ezibonakalayo kunye neekhemikhali ziya kutshintsha.Oku kubonakaliswa ngokuncipha kwe-elasticity, ukwanda kweplastiki, ukunyuka kwe-solubility, ukunciphisa i-viscosity yesisombululo se-rubber, kunye nokuphucula ukusebenza kwe-adhesive ye-rubber material.Kodwa njengoko iplastiki yerabha ekrwada isanda, amandla omatshini werabha evuthisiweyo ayancipha, ukonakala okusisigxina kuyenyuka, kunye nokunganyangeki kokuguga kunye nokuncipha kokuguga.Ke ngoko, iplastiki yerabha ekrwada iluncedo kuphela kwinkqubo yokusetyenzwa kwerabha, kwaye ayihambelani nokusebenza kwerabha ene-vulcanized.