1.Sekhahla sa kopo
(1). E sebelisoa ho rabara e sa tsitsang: joalo ka NR, BR, NBR, IR, SBR, joalo-joalo.
(2). Etsa kopo ho rabara e tletseng metsi: joalo ka EPM e ka ts'oaroa feela ke peroxide, EPDM e ka hlajoa ke peroxide le sebabole ka bobeli.
(3). E sebelisoa ho rabara e fapaneng ea ketane: joalo ka Q vulcanization.
2. Litšobotsi tsa tsamaiso ea peroxide vulcanization
(1). Sebopeho sa marang-rang sa rabara e nang le vulcanized ke CC bond, e nang le matla a phahameng a tlamo, botsitso bo phahameng ba lik'hemik'hale, le khanyetso e babatsehang ea ho tsofala ha mocheso le oksijene.
(2). Rabara e nang le vulcanized e na le deformation e tlase e sa feleng, elasticity e ntle le ts'ebetso e fokolang ea matla.
(3). Tšireletseho e mpe ea ts'ebetso le peroxide e theko e boima.
(4). Ho tiisoa ka mokhoa o tsitsitseng kapa lihlahisoa tse tiisitsoeng tsa mocheso o phahameng li na le mefuta e mengata ea lisebelisoa.
3. Li-peroxide tse sebelisoang hangata
Lintho tse atisang ho sebelisoa ke peroxide vulcanizing ke alkyl peroxides, diacyl peroxides (dibenzoyl peroxide (BPO)) le peroxy esters. Har'a tsona, dialkyl peroxides li sebelisoa haholo. Joalo ka: diisopropyl peroxide (DCP): hajoale ke eona e sebelisoang ka ho fetesisa e etsang vulcanizing.
2,5-dimethyl-2,5-(di-tert-butylperoxy) hexane: e tsejoang hape e le bis-dipentyl
4. Peroxide vulcanization mochine
Sehlopha sa peroxide sa peroxide se senyeha habonolo ke mocheso ho hlahisa li-radicals tsa mahala, tse tsosang mokhoa oa mahala oa ho kopanya li-cross-linking tsa ketane ea limolek'hule tsa rabara.
5. Lintlha tsa bohlokoa tsa vulcanization ea peroxide:
(1). Tekanyo: e fapana ho ea ka mefuta e fapaneng ea rabara
Bokhoni ba ho hokahanya ha peroxide: 1g molek'hule ea organic peroxide e ka etsa hore na ligrama tse kae tsa limolek'hule tsa rabara li hlahisa lik'hemik'hale tse kopanyang.
Ka mohlala: katleho ea ho hokahanya ha SBR ke 12.5; katleho ea ho hokahanya ha BR ke 10.5; katleho ea ho hokahanya ha EPDM, NBR, NR ke 1; katleho e kopanyang ea IIR ke 0.
(2). Tšebeliso ea ntho e sebetsang le co-sulfurizing agent ho ntlafatsa ts'ebetso ea ho hokahanya
Karolo ea ZnO ke ho ntlafatsa ho hanyetsa mocheso oa sekhomaretsi, eseng activator. Karolo ea asiti ea stearic ke ho ntlafatsa ho qhibiliha le ho hasana ha ZnO ka rabara. HVA-2 (N,N'-phthalimido-dimaleimide) hape ke sehlahiswa se sebetsang sa peroxide.
Ho eketsa mothusi oa vulcanizing: haholo-holo sebabole se mosehla, le lisebelisoa tse ling tse kopanyang tse kang divinylbenzene, trialkyltricyanate, unsaturated carboxylates, joalo-joalo.
(3). Eketsa lintho tse nyenyane tsa alkaline, tse kang MgO, triethanolamine, joalo-joalo, ho ntlafatsa bokhoni ba ho kopanya li-cross-link, ho qoba tšebeliso ea slot carbon black le silica le tse ling tse acidic fillers (acid ho etsa free radicals passivation); Li-antioxidants ka kakaretso ke li-amine le phenolic antioxidants, hape ho bonolo ho etsa li-radicals tsa mahala, ho fokotsa ts'ebetso ea li-cross-link, li lokela ho sebelisoa ka mokhoa o fokolang.
(4). Mocheso oa vulcanization: o lokela ho ba holimo ho feta mocheso oa ho bola oa peroxide
(5). Nako ea vulcanization: hangata makhetlo a 6 ~ 10 a halofo ea bophelo ba peroxide.
Peroxide halofo ea bophelo: ka mocheso o itseng, ho bola ha peroxide ho halofo ea nako ea pele ea nako e hlokahalang, e hlalositsoeng ka t1/2.
Haeba halofo ea bophelo ba DCP ho 170 ℃ ke 1min, joale nako ea eona e ntle ea sulphation e lokela ho ba 6 ~ 10min.
Mohlala oa tlhahiso: EPDM 100 (base)
S 0.2 (mothusi oa vulcanizing agent)
SA 0.5 (activator)
ZnO 5.0 (ho ntlafatsa ho hanyetsa mocheso)
HAF 50 (e matlafatsang)
DCP 3.0 (Thixotropic agent)
MgO 2.0 (E ntlafatsa ts'ebetso ea likhokahanyo tse fapaneng)
Oli ea ho sebetsa 10 (setsi se nolofatsang)
