Cholinga ndi kusintha kwa mawonekedwe a rabara yaiwisi

Rubber amakhala ndi kuthanuka kwabwino, koma chinthu chamtengo wapatalichi chimakhala ndi zovuta zambiri pakupanga zinthu. Ngati elasticity ya mphira yaiwisi siinayambe yachepetsedwa, mphamvu zambiri zamakina zimadyedwa muzotanuka zotanuka panthawi yokonza, ndipo mawonekedwe ofunikira sangapezeke. Ukadaulo wopangira mphira uli ndi zofunika zina za mphira wa rabara yaiwisi, monga kusakaniza, komwe nthawi zambiri kumafuna kukhuthala kwa Mooney pafupifupi 60, ndi kupukuta mphira, komwe kumafuna kukhuthala kwa Mooney pafupifupi 40, Apo ayi, sikutheka kugwira ntchito bwino. . Zomatira zina zaiwisi zimakhala zolimba kwambiri, zimakhala ndi mamasukidwe apamwamba, ndipo zilibe zinthu zofunikira komanso zofunikira - pulasitiki yabwino. Pofuna kukwaniritsa zofunikira za ndondomekoyi, mphira yaiwisi iyenera kupangidwa ndi pulasitiki kuti idule unyolo wa maselo ndi kuchepetsa kulemera kwa maselo pansi pa makina, kutentha, mankhwala ndi zina. Pulasitiki yomwe imataya mphamvu yake kwakanthawi ndipo imakhala yofewa komanso yosasunthika. Tinganene kuti kuumba mphira yaiwisi ndi maziko a njira zina zamakono.
Cholinga cha yaiwisi akamaumba mphira ndi: choyamba, kupeza digiri inayake ya plasticity kwa mphira yaiwisi, kuti akhale oyenera kusakaniza, kugudubuza, extrusion, kupanga, vulcanization, komanso zofunika njira monga mphira slurry ndi mphira siponji. kupanga; Chachiwiri ndi homogenize pulasitiki ya mphira yaiwisi kuti apange mphira zinthu ndi yunifolomu khalidwe.
Pambuyo pa plasticizing, thupi ndi mankhwala katundu wa mphira yaiwisi amakhalanso kusintha. Chifukwa cha mphamvu yamphamvu yamakina ndi okosijeni, kapangidwe ka maselo ndi kulemera kwa mphira kudzasintha pamlingo wina, kotero kuti zinthu zakuthupi ndi zamankhwala zidzasinthanso. Izi zimawonetsedwa ndi kuchepa kwa elasticity, kuwonjezeka kwa pulasitiki, kuwonjezeka kwa kusungunuka, kuchepa kwa kukhuthala kwa mphira, komanso kusintha kwa zomatira za zinthu za rabara. Koma pulasitiki ya mphira yaiwisi ikachuluka, mphamvu zamakina a rabara yowongoka zimachepa, kusinthika kosatha kumawonjezeka, ndipo kukana kuvala ndi kukalamba kumachepa. Choncho, pulasitiki ya mphira yaiwisi ndi yopindulitsa pa njira yopangira mphira, ndipo siikugwirizana ndi mphira wopangidwa ndi vulcanized.