Irabha inokuqina okuhle, kodwa le propati ixabisekileyo ibangela ubunzima obukhulu kwimveliso yemveliso. Ukuba ukuqina kwerabha eluhlaza akuncitshiswanga kuqala, uninzi lwamandla oomatshini lusetyenziswa kwi-elastic deformation ngexesha lenkqubo yokucubungula, kwaye imo efunekayo ayinakufunyanwa. Itekhnoloji yokucubungula irabha ineemfuno ezithile ze-plasticity yerabha eluhlaza, njengokuxuba, okuqhelekileyo kufuna i-Mooney viscosity emalunga nama-60, kunye nokusula irabha, okufuna i-Mooney viscosity emalunga nama-40, Ngaphandle koko, akuyi kwenzeka ukuba isebenze kakuhle. Ezinye izincamathelisi eziluhlaza ziqinile kakhulu, zine-viscosity ephezulu, kwaye azinazo iipropati zenkqubo ezisisiseko neziyimfuneko - i-plasticity elungileyo. Ukuze kuhlangatyezwane neemfuno zenkqubo, irabha eluhlaza kufuneka ifakwe iplastiki ukuze inqumle uthotho lweemolekyuli kwaye inciphise ubunzima beemolekyuli phantsi kwezenzo zoomatshini, ubushushu, iikhemikhali kunye nezinye. Ikhompawundi yeplastiki elahlekelwa bukuqina kwayo okwethutyana kwaye ithambe kwaye inyibilike. Kunokuthiwa ukubumba irabha eluhlaza sisiseko sezinye iinkqubo zobuchwepheshe.
Injongo yokubumba irabha eluhlaza kuku: okokuqala, ukufumana inqanaba elithile leplastiki yerabha eluhlaza, ukuyenza ifaneleke ukuxuba, ukuqengqeleka, ukukhupha, ukwenza, ukuxuba, kunye neemfuno zeenkqubo ezinje ngokwenziwa kwerabha yeslurry kunye nerabha yesiponji; Okwesibini kukwenza iplastiki yerabha eluhlaza ibe yihomogenize ukuze kuveliswe izinto zerabha ezinomgangatho ofanayo.
Emva kokufakelwa iplastiki, iimpawu zomzimba nezekhemikhali zerabha eluhlaza nazo ziyatshintsha. Ngenxa yamandla oomatshini aqinileyo kunye ne-oxidation, ulwakhiwo lwemolekyuli kunye nobunzima be-molekyuli zerabha buya kutshintsha ukuya kwinqanaba elithile, ngoko ke iimpawu zomzimba nezekhemikhali nazo ziya kutshintsha. Oku kubonakala ekunciphiseni ukuthamba, ukwanda kwe-plasticity, ukwanda kokunyibilika, ukwehla kwe-viscosity yesisombululo serabha, kunye nokuphuculwa kokusebenza kwe-glue material. Kodwa njengoko i-plasticity yerabha eluhlaza isanda, amandla oomatshini ngerabha evulcanized ayancipha, ukuguquka okungapheliyo kuyanda, kwaye ukumelana nokuguguleka kunye nokumelana nokuguga kuyancipha. Ke ngoko, ukufakwa kwe-plasticization yerabha eluhlaza kuluncedo kuphela kwinkqubo yokucubungula irabha, kwaye akuncedi ekusebenzeni kwerabha evulcanized.
Ixesha lokuthumela: Julayi-26-2023
