Zinc oxide i xiaki lexi tirhaka lexi tirhisiwaka ngopfu eka ku lulamisiwa ka rhaba. Eka vuhumelerisi bya rhaba, thyaka na endlelo ro vuyisa swilo swinga humesa ti zinc compounds, leswi vangaka khombo eka mbango, hikokwalaho nhlayo ya zinc oxide eka fomula ya rhaba yifanele kuhungutiwa. Active zinc oxide yina vukulu bya ti particle letintsongo, ndzhawu leyikulu yale henhla, ntirho wale henhla wa vulcanization, loko ku pimanyisiwa na zinc oxide leyi tolovelekeke, nhlayo ya active zinc oxide ya hunguteka, xisweswo swihunguta ku onhaka ka zinc eka mbango, leswi kombisaka ku vuyeriwa ka mbango na ikhonomi.
Ctive zinc oxide yi humelerisiwa hiku tirhisa endlelo ro tsakama, nhlanganelo wa mpfula na ku oxiwa, ku humelerisa active zinc oxide na transparent zinc oxide, ku hambana na endlelo ra ndhavuko ra indirect calcination leri tirhisiwaka hi vahumelerisi van’wana votala. Endlelo ro tsakama rina mpimo wale henhla wa kufana eka khwalithi, endlelo ritlhela ri endla leswaku kuva na ndzhawu leyikulu yokarhi ya le henhla (40m2/g) xikan’we naku hangalasiwa ka vukulu bya ti particle eka switirhisiwa swotala, naswona nhlayo yale hansi ya thyaka ra nsimbi yo tika i yin’wana ya tiqingho ta mbango ta xitirhisiwa lexi.
Endlelo ra vuhumelerisi bya endlelo ro tsakama rile ka xiyimo lexi landzelaka: Zinc ingot na sulfuric acid reaction kuva yi humesa zinc sulfate, kutani ku cinca ka yona na sodium carbonate ku humelerisa zinc carbonate tani hi raw material ya zinc oxide. Hi zinc carbonate tani hi raw material, zinc oxide yi endliwa hiku hlantswiwa, ku omisiwa, ku calcining naku pfotlosa.
Avhareji ya vukulu bya ti particle ta active zinc oxide i 50nm, ndzhawu yokarhi yale henhla yikulu, kwalomu ka 40m2/g, naswona ti crystals i honeycomb, loose and porous, hikokwalaho ku hangalaka i swinene; Rivilo ra yona ra ku hangalaka ri hatlisa ku tlula zinc oxide leyi tolovelekeke, ku hangalasiwa ku fana, eka ku angula ku antswisa xiendlakalo xa bridging agglomeration, hi xisekelo swi nga ha endliwa hi ku helela; Tinsimbi to tika PB2 +, CU2 +, CD2 +, MN2 +, FE2 + Nhlayo yi le hansi swinene, yi fambisana na swilaveko swa nsirhelelo wa mbango.
Ku tirhisiwa ka xiendliwa .
Zinc oxide eka indasitiri ya rhaba yitirhisiwa ngopfu tani hi rubber vulcanization active agent (accelerating agent), ntirho wa yona iku enhanca activation ya vulcanization accelerator naku antswisa vulcanization effect ya rhaba. Ndlela ya yona ya reaction i: zinc oxide na accelerator chemical reaction ku humesa munyu wa zinc wa accelerator; Accelerator zinc munyu na ti molecule ta polysulfide ku tumbuluxa munyu wa zinc wa polysulfide; Polysulfide zinc salt and rubber macromolecule reaction ku hetisa ku crosslinking ko hetelela ka tikhemikhali, leswaku ku ta tlakusiwa vulcanization ya rhaba, ku tirhisiwa na ku tiyisisiwa ka xiave xa anti-aging, ku fikelela ku tshamiseka, vuhlayiseki bya ku lulamisa, mpimo lowukulu wa ku hunguteka ka mpimo lowu hoxekeke, na ku antswisa switirhisiwa swa rhaba, ku lwisana ka rhaba, ku lwisana na ku tshoveka ka rhaba, na ku engetela ku lehisa loku nga cinciki ka vulcanized, na ku engeteleka ka rhaba, na ku andza ka rhaba. na ku antswisa ntshikelelo wa rhaba ya vulcanized stretch, matimba ya tensile na ku leha, ku hunguta ku tshikileriwa ka ku onhaka ka nkarhi hinkwawo, na swin’wana.
1. Active zinc oxide eka xitirhisiwa xa semi-steel radial thayere innerliner .
Eka swiyimo leswi fanaka, ku tirhisiwa ka active zinc oxide 2 # formula rubber curing speed ku tlula ku tirhisiwa ka ordinary zinc oxide 1 # formula rubber yi tlakukile hi kwalomu ka 1 wa minkarhi; 3 # Formula ya active zinc oxide dosage is only 1 # formula ya ordinary zinc oxide dosage ya 80%, kambe 3 # formula rubber curing speed ya ha hatlisa swinene ku tlula formula ya rhaba l. 3 formulations of rubber coking properties, menni viscosity a hi ku hambana lokukulu.
Test formula vulcanized rubber hardness, constant tensile stress, tensile strength na matimba yo handzula ku tlula formula ya vuhumelerisi ya vulcanized rhaba leyi antswisiweke, ku lwisana na ku karhala na flexural performance level ya ringanisiwa, matirhelo ya ku hisa na ku dyuhala ka moya ya hungutekile nyana.
Active zinc oxide ematshan’wini ya orinc oxide leyi tolovelekeke leyi tirhisiwaka eka semi-steel radial thayere ra le ndzeni ka rhaba ya ply, ku horisa swivumbeko swa rhaba swa physical na ku tirhisiwa ka ordinary zinc oxide curing rubber level swi ringanisiwa na swa rhaba, rivilo ra rhaba ra vulcanization swi hatlisisiwa, leswi pfunaka ku hunguta nkarhi wa vulcanization. Ku tirhisiwa ka active zinc oxide swinga hunguta nhlayo ya zinc oxide, leyi cinca cincaka swinene eka swilaveko swa nsirhelelo wa mbango.
2. Ku tirhisiwa ka active zinc oxide eka rhaba ya thayere ra radial .
Hiku tlakuka ka nhlayo ya active zinc oxide, TC10 na TC90 overall trend ya kukula. ML na MH a va cincanga ngopfu. Leswi swivula leswaku active zinc oxide yinga tirhisiwa hi nhlayo leyi hungutiweke.
Matimba ya tensile, 100% elongation, 300% elongation xikan’we na matimba yo handzula ya rhaba aswi cincanga ngopfu hiku tlakuka ka nhlayo ya active zinc oxide. Loko mpimo wu tlula 5 wa swiphemu, matimba yo handzula ya rhaba leyi nga ni vulcanized ya hunguteka eka inst ead, leswi vangiwaka hi ku tlakuka loku tlulaka mpimo ka crosslink density. Endzhaku ka ku dyuhala eka 100 °C× 24h, mpimo wa ku hlayisiwa ka matirhelo ya nkatsakanyo wa rhaba lowu nga na swiphemu swa 3 swa active zinc oxide hi wona lowunene ngopfu, naswona lowu nga na swiphemu swa 2.5 swa mpimo hi wona wo biha swinene. Xivangelo xingava nhlayo ya 2.5 wa swiphemu, xivumbeko xa vulcanized rubber mesh axi hetisekanga, leswi tlhelaka swivonaka eka ku leha loku fanaka eka ku handzuka, ku onhaka ka nkarhi hinkwawo eka ku handzuka, ku tiya ka ribuwa, na matirhelo ya ku hisa ka ntshikelelo.
Ku engeteriwa ka active zinc oxide rubber blend, TC10 na TC90 ku leha swinene, torque ML ya le hansi, torque ya le henhla ya MN na ku hambana exikarhi ka ku tlakuka ka MH A ka mbirhi ka MH, leswi kombisaka leswaku vuhlayiseki bya yona bya ku lulamisa, rivilo ra vulcanization hi ku nonoka, mpimo wa ku tsemakanya ku tlakuka, matimba ya yona ya tensile, 100% ya 100% ya 300% ya 300% ya 300% ya 300% ya 300% ya 300 300% ya 300% ya 300% 300% 300% 300% 300% 300% 300% 300% 300% 300%, 300%, 100% 100%, 100% 100 %. % ya Ku dyuhala ka 24h, swihlawulekisi swa xikombiso xa mpimo wa ku hlayisiwa swinene endzhaku ka ku dyuhala eka 100 °C× 24h, mpimo wa ku hlayisiwa ka matirhelo ya xikombiso wu antswisiwile swinene. Loko active zinc oxide yi tirhisiwa hi nhlayo leyi hungutiweke, TC90 - TS1 yi komile, ku cinca ka ML na MH a swi na nkoka, naswona swivumbeko swa michini swa ku cinca ka rhaba ya vulcanized a swi vonaki; 2.5 Swiphemu swa mpimo, ku lwisana ka ku dyuhala ka rhaba leyi vulcanized swa hunguteka, hikokwalaho nhlayo yinga hungutiwa kuya eka 3 wa swiphemu swa mpimo lowu faneleke ku tirhisiwa.
Swipfuno swa zinc oxide .
Hiku tirhisa data ya experimental ya switirhisiwa leswinga laha henhla, swinga dyondziwa leswaku active zinc oxide yinga tirhisiwa ngopfu eka switirhisiwa swohambana hambana swa rhaba.
(1) yi ni ku hangalaka lokunene eka swilo swa rhaba, naswona swivumbeko swa nyama ni swa michini swa antswisiwa;
(2) eka endlelo ra vulcanization. Nkarhi wa coking wa nchumu wa rhaba wu ya wu leha, vuhlayiseki bya vulcanization byi antswisiwa, naswona ku tirha kahle ka vulcanization swa antswisiwa;
(3) Hikwalaho ka ndhawu leyikulu yo karhi ya le henhla na vukulu bya swiphemuphemu leswitsongo swa zinc oxide leyi tirhaka , yi nga tirhisiwa hi mpimo lowu hungutiweke eka ku engeteriwa ka switirhisiwa swin’wana swa rhaba.
