Waa maxay sababta caaggu u baahan yahay in la dadajiyo?Waa maxay faa'iidooyinka vulcanizing caag?
Inkasta oo caag cayriin ah uu sidoo kale leeyahay sifooyin codsi oo faa'iido leh, waxa kale oo uu leeyahay dib-u-dhacyo badan, sida xoog hooseeya iyo dabacsanaan hooseeya;Qabawgu wuu adkeeyaa, kulaylkuna wuu dhejiyaa;Si fudud loo da'da, iwm. Horraantii 1840-meeyadii, waxaa la ogaaday in caaggu uu mari karo isku-tallaabta iyada oo la wada kululeeyo baaruud.Sidaa darteed, ilaa hadda, inkasta oo caag la iskuxiri karo ma aha oo kaliya baaruudda, laakiin sidoo kale leh walxo kale oo badan oo kiimiko ah iyo hababka jireed iyo kiimikaad, warshadaha caagga ah, had iyo jeer waxay caado u ahayd in lagu tilmaamo isgoysyada caagga sida "vulcanization", halka warshadaha balaastigga ah ayaa mararka qaarkood loola jeedaa falcelinta isdhaafsiga sida daaweynta.Vulcanization waxay si weyn u wanaajisaa waxqabadka caagga ceyriinka ah, waxay ballaarisaa kala duwanaanta codsiga ee caagga ah, waxayna aasaas u tahay wax soo saarka warshadaha ballaaran iyo adeegsiga caagga.
Ka-hortagga caagga waa mid ka mid ah hababka ugu muhiimsan ee habka wax soo saarka caaggu, sidoo kale waa tallaabadii ugu dambeysay ee wax-soo-saarka alaabada caagga ah.Habkan, caaggu waxa uu maraa isbeddel kiimiko oo isku dhafan oo isku dhafan, laga bilaabo isku-dhafka balaastiigga ah ilaa caag aad u jilicsan ama adag oo iskutallaab ah, si loo helo waxyaabo badan oo jidheed, farsamo iyo kiimiko oo dhammaystiran, iyo hagaajinta iyo ballaarinta isticmaalka qiimaha iyo codsiga. noocyo kala duwan oo alaabta caag ah.Sidaa darteed, vulcanization-ka ayaa muhiimad weyn u leh soo saarista iyo adeegsiga caagga iyo alaabteeda.
Fikradda vulcanization
Vulcanization waxaa loola jeedaa badeecada dhammaatay ee laga sameeyay maaddooyinka caagga ah ee leh caag gaar ah iyo viscosity (caag cayriin, caag caag ah, caag isku dhafan) iyada oo loo marayo habayn ku habboon (sida duubista, extrusion, naqshadeynta, iwm.) ee xaaladaha dibadda qaarkood, iyada oo loo marayo kiimiko arrimo (sida habka vulcanization) ama arrimo jireed (sida γ Habka loogu beddelo saameynta shucaaca dib ugu beddelashada alaabada caag jilicsan ee jilicsan ama alaab adag oo caag ah si loo helo waxqabadka isticmaalka. Inta lagu jiro habka vulcanization, xaaladaha dibadda (sida kuleylka ama shucaaca) wuxuu keenaa falcelin kiimiko ah oo udhaxeeya caagga ceyriinka ah ee qaybaha walxaha caagga ah iyo wakiilka vulcanizing ama inta u dhaxaysa caagga ceyriinka ah iyo caagga ceyriinka ah, taasoo keentay isku-xidhka macromolecules caag toosan oo isku xidha makromolecules qaabaysan shabakad saddex-cabbir ah.
Falcelintan, sifooyin kala duwan oo caag ah ayaa si weyn loo hagaajiyay, taasoo awood u siisay alaabada caagga ah si ay u helaan muuqaal ahaan, farsamo iyo waxyaabo kale oo dabooli kara baahida isticmaalka alaabta.Nuxurka vulcanization waa isku-xiran, kaas oo ah habka loo beddelo qaababka molecular caag toosan oo loo beddelo qaab-dhismeedka shabakadaha bannaan.
Habka sulfurization
Ka dib marka la miisaamo cadadka caag isku dhafan iyo wakiilka vulcanizing, tallaabada xigta waa in lagu daro wakiilka vulcanizing.Waxaa lagu talinayaa inaad raacdo tillaabooyinka soo socda si aad u dhammaystirto.
1. Marka hore, nadiifi makiinadda furitaanka si aad u hubiso nadaafaddeeda si aad uga hortagto isku darka wasakhaha kale.Kadibna ku hagaaji garoonka rullaluistuyada ee mishiinka furitaanka ilaa inta ugu yar oo ku shub caagga isku qasan mashiinka furitaanka si aad u dhaafto khafiif ah.Ka dib marka baaska khafiifka ah la dhammeeyo, kala dheereynta duubka ee qasiyaha waa in si habboon loo ballaadhiyaa si loo hubiyo in caagga isku dhafan uu si siman ugu duudduubay duubabka.Heerkulka dusha sare ee caagga isku dhafan waa inuu ahaadaa 80oC.
2. Adigoo hagaajinaya garoonka rollerka iyo biyaha si habboon u qaboojinaya, heerkulka caagga isku dhafan waxaa lagu xakameynayaa qiyaastii 60-80 ° C. Halkaa marka ay marayso, wakiilka vulcanizing ayaa la bilaabay in lagu daro caag isku dhafan.
Waqtiga boostada: Oct-25-2023
