1.Application huam chin
(1) tih a ni. Unsaturated rubber-a hman tur: NR, BR, NBR, IR, SBR, etc. ang chi te.
(2) tih a ni. Saturated rubber-ah hnawih rawh: EPM ang chi hi peroxide hmang chauhin vulcanized theih a ni a, EPDM hi peroxide leh sulfur hmanga vulcanized theih a ni.
(3) tih a ni. Chain rubber chi hrang hrangah hman thin: Q vulcanization ang chi.
2. Peroxide vulcanization system awm dan
(1) tih a ni. Vulcanized rubber network structure hi CC bond a ni a, bond energy sang tak a nei a, chemical stability sang tak a nei a, thermal leh oxygen aging laka a do tha hle bawk.
(2) tih a ni. Vulcanized rubber hian permanent deformation a nei tlem a, elasticity tha tak a nei a, dynamic performance pawh a tha lo hle.
(3) tih a ni. Processing safety tha lo leh peroxide man to tak a ni.
(4) tih a ni. Static sealing emaw temperature sang takah chuan static sealing products hian hmanna hrang hrang a nei a.
3.Peroxide hman tlanglawn tak tak
Peroxide vulcanizing agents hman tlanglawn tak chu alkyl peroxides, diacyl peroxides (dibenzoyl peroxide (BPO)) leh peroxy esters te an ni. Chung zingah chuan dialkyl peroxide hi hman a ni nasa hle. Such as: diisopropyl peroxide (DCP): tunah hian vulcanizing agent hman tam ber a ni.
2,5-dimethyl-2,5-(di-tert-butylperoxy) hexane: bis-dipentyl tia hriat bawk
4. Peroxide vulcanization awm dan
Peroxide-a peroxide group hi khaw lum vangin awlsam takin a chhe thei a, free radicals a siam chhuak a, chu chuan rubber molecular chain-a free radical type cross-linking reaction a tichhuak a ni.
5. Peroxide vulcanization chungchanga thil pawimawh tak tak:
(1) tih a ni. Dosage: rubber chi hrang hrangah a inang lo
Peroxide cross-linking efficiency: Organic peroxide molecule 1g hian rubber molecule gram engzat nge chemical cross-linking a siam thei.Peroxide molecule 1 hian rubber molecule 1g cross-linking a siam thei a nih chuan cross-linking efficiency chu 1 a ni.
Entirnan: SBR cross-linking efficiency chu 12.5 a ni a; BR cross-linking efficiency chu 10.5 a ni a; EPDM, NBR, NR te cross-linking efficiency chu 1 a ni a; IIR cross-linking efficiency chu 0 a ni.
(2) tih a ni. Cross-linking efficiency tihsan nan active agent leh co-sulfurizing agent hman a ni
ZnO hnathawh chu activator ni lovin adhesive heat resistance tihchangtlun a ni. Stearic acid hnathawh hi rubber chhunga ZnO awm theihna leh a darh zau zelna tur a ni. HVA-2 (N,N’-phthalimido-dimaleimide) pawh hi peroxide activator tha tak a ni bawk.
Auxiliary vulcanizing agent dah belh: a bik takin sulfur yellow, leh auxiliary cross-linking agent dang divinylbenzene, trialkyltricyanate, unsaturated carboxylates, etc. te dah belh a ni.
(3) tih a ni. Cross-linking efficiency tihsan nan alkaline substance tlemte, MgO, triethanolamine, etc. te dah la, slot carbon black leh silica leh acidic filler dang (free radicals passivation siam nan acid) hman loh tur antioxidants hi a tlangpuiin amine leh phenolic antioxidants, free radicals passivation siam awlsam tak, cross-linking efficiency tihhniamtu pawh hi hman tlem tur a ni.
(4) tih a ni. Vulcanization temperature: peroxide decomposition temperature aiin a sang zawk tur a ni
(5) tih a ni. Vulcanization hun: a tlangpuiin peroxide half-life aiin a let 6~10 vel a ni.
Peroxide half-life: temperature engemaw takah chuan peroxide decomposition chu a mamawh hun chhunga a original concentration chanve thleng, t1/2-a tarlan a ni.
170°C-a DCP half-life chu 1min a nih chuan a positive sulphation time chu 6~10min a ni tur a ni.
A siam dan entirnan: EPDM 100 (base) .
S 0.2 (vulcanizing agent ṭanpuitu) 1.1.
SA 0.5 (activator) a ni.
ZnO 5.0 (heat resistance tihchangtlun nan) .
HAF 50 (reinforcing agent) hmanga tihchak a ni.
DCP 3.0 (Thixotropic agent) hmanga siam a ni.
MgO 2.0 (Cross-linking efficiency a ti tha zawk)
Operating oil 10 (a ti nem thei) 10.1.
