Zinc oxide yog ib qho tshuaj nquag siv hauv kev ua cov roj hmab. Hauv kev tsim cov roj hmab, cov txheej txheem pov tseg thiab rov ua dua tshiab tuaj yeem tso cov zinc sib txuas, ua rau muaj kev puas tsuaj rau ib puag ncig, yog li tus nqi ntawm zinc oxide nyob rau hauv cov qauv roj hmab yuav tsum raug txo. active zinc oxide muaj qhov me me me me, thaj chaw loj, kev ua haujlwm siab vulcanization, piv nrog cov zinc oxide zoo tib yam, cov nyiaj zinc oxide txo qis, yog li txo qhov kev puas tsuaj ntawm zinc rau ib puag ncig, cuam tshuam cov txiaj ntsig ntawm ib puag ncig thiab kev lag luam.
Ib qho ctive zinc oxide yog tsim los siv cov txheej txheem ntub dej, kev sib xyaw ua ke ntawm nag lossis daus thiab ci, los tsim cov zinc oxide thiab pob tshab zinc oxide, uas tsis yog cov txheej txheem kev siv cov txheej txheem tsis ncaj qha calcination siv los ntawm ntau lwm cov neeg tsim khoom. Cov txheej txheem ntub dej muaj qhov zoo sib xws ntawm qhov zoo, cov txheej txheem kuj ua rau thaj chaw loj ntawm qhov chaw (40m2 / g) thiab qhov pom qhov loj me me faib rau ntau daim ntawv thov, thiab cov ntsiab lus qis ntawm cov hlau hnyav impurities yog ib puag ncig lav ntawm cov khoom no.
Cov txheej txheem ntawm cov txheej txheem ntub dej yog raws li hauv qab no: zinc ingot thiab sulfuric acid cov tshuaj tiv thaiv los tsim zinc sulfate, thiab tom qab ntawd nws cov tshuaj tiv thaiv nrog sodium carbonate los tsim zinc carbonate ua raw khoom rau zinc oxide. Nrog zinc carbonate ua raw khoom, zinc oxide yog tsim los ntawm kev ntxuav, ziab, calcining thiab crushing.
Qhov nruab nrab particle loj ntawm active zinc oxide yog 50nm, thaj chaw tshwj xeeb yog loj, txog 40m2 / g, thiab cov crystals yog honeycomb, xoob thiab ntxeem tau, yog li cov dispersion zoo; nws diffusion ceev yog ceev tshaj li zoo tib yam zinc oxide, tis yog uniform, nyob rau hauv cov tshuaj tiv thaiv los txhim kho lub phenomenon ntawm bridging agglomeration, yeej yuav reacted kiag li; Cov hlau hnyav Pb2 +, Cu2 +, Cd2 +, Mn2 +, Fe2 + cov ntsiab lus tsawg heev, raws li cov kev cai ntawm kev tiv thaiv ib puag ncig.
Khoom siv
Zinc oxide hauv kev lag luam roj hmab feem ntau yog siv los ua cov roj hmab vulcanization active tus neeg saib xyuas (tus neeg sawv cev nrawm), uas yog los txhim kho qhov ua kom cov vulcanization accelerator thiab txhim kho cov nyhuv vulcanization ntawm roj hmab. Nws cov tshuaj tiv thaiv mechanism yog: zinc oxide thiab accelerator tshuaj tiv thaiv los tsim accelerator zinc ntsev; accelerator zinc ntsev thiab polysulfide molecules los tsim polysulfide zinc ntsev; polysulfide zinc ntsev thiab roj hmab macromolecule cov tshuaj tiv thaiv los ua kom tiav cov tshuaj crosslinking kawg, txhawm rau txhawb cov vulcanization ntawm cov roj hmab, ua kom muaj zog thiab ntxiv dag zog rau lub luag haujlwm ntawm kev laus, kom ua tiav kev ruaj ntseg, ua tiav kev nyab xeeb, txo qis ntawm qhov tsis zoo, thiab txhim kho cov khoom siv roj hmab, tsim kua muag, ua kom tsis muaj zog, thiab ua kom cov roj hmab ruaj khov ntawm vcanization elongation. Thiab txhim kho cov roj hmab vulcanized stretch stress, tensile zog thiab elongation, txo compression mus tas li deformation, thiab lwm yam.
1. Active zinc oxide nyob rau hauv semi-steel radial log innerliner daim ntawv thov
Nyob rau tib lub sijhawm, kev siv cov zinc oxide 2 # cov qauv roj hmab kho kom nrawm dua li kev siv cov zinc oxide zoo tib yam 1 # cov qauv roj hmab nce li 1 zaug; 3 # cov qauv ntawm cov zinc oxide ntau npaum li cas tsuas yog 1 # cov qauv ntawm cov zinc oxide zoo tib yam ntawm 80%, tab sis 3 # cov qauv roj hmab kho ceev tseem ceev dua li cov qauv ntawm cov roj hmab l. 3 formulations ntawm roj hmab coking zog, lub Menni viscosity tsis ntau txawv.
Test formula vulcanized roj hmab hardness, tas li tensile kev nyuaj siab, tensile lub zog thiab tsim kua muag lub zog tshaj li cov qauv tsim vulcanized roj hmab txhim kho, qaug zog kuj thiab flexural kev ua tau zoo yog piv, tshav kub thiab huab cua aging kev ua tau zoo txo me ntsis.
active zinc oxide es tsis txhob siv zinc oxide zoo tib yam siv nyob rau hauv semi-steel radial log sab hauv ply roj hmab, kho cov roj hmab lub cev thiab kev siv cov zinc oxide zoo tib yam curing roj hmab qib yog piv rau cov roj hmab, roj hmab vulcanization ceev ceev, uas yog conducive rau luv luv lub sij hawm vulcanization. Kev siv cov zinc oxide nquag tuaj yeem txo cov zinc oxide, hloov tau ntau dua rau cov kev cai ntawm kev tiv thaiv ib puag ncig.
2. Daim ntawv thov ntawm active zinc oxide nyob rau hauv radial log tsheb tread rubber
Nrog rau qhov nce ntawm cov zinc oxide nquag, TC10 thiab TC90 tag nrho cov qauv ntawm kev loj hlob. ML thiab MH tsis hloov ntau. Qhov no txhais tau hais tias active zinc oxide yuav siv tau nyob rau hauv ib tug txo nqi.
Lub zog tensile, 100% elongation, 300% elongation thiab lub zog tsim kua muag ntawm cov roj hmab tsis hloov pauv nrog qhov nce ntawm cov khoom siv zinc oxide. Thaum ntau npaum li cas tshaj 5 qhov chaw, lub zog tsim kua muag ntawm vulcanized roj hmab txo qis inst ead, uas yog tshwm sim los ntawm kev nce ntau ntawm crosslink ceev. Tom qab kev laus ntawm 100 ℃ × 24h, qhov kev ua tau zoo ntawm cov roj hmab sib xyaw nrog 3 feem ntawm zinc oxide yog qhov zoo tshaj plaws, thiab nrog 2.5 feem ntawm kev siv tshuaj yog qhov phem tshaj. Yog vim li cas tej zaum yuav yog tus nqi ntawm 2.5 qhov chaw, cov vulcanized roj hmab mesh qauv yog tsis zoo tag nrho, uas yog kuj reflected nyob rau hauv tib elongation ntawm lub kua muag, mus tas li deformation ntawm lub kua muag, Shore hardness, thiab compression tshav kub kev ua tau zoo.
Ntxiv ntawm cov zinc oxide roj hmab sib xyaw, TC10 thiab TC90 tseem ntev dua, qhov tsawg kawg nkaus torque ML, qhov siab tshaj plaws torque Mn thiab qhov sib txawv ntawm ob MH ib ML nce, qhia tias nws cov kev ruaj ntseg, vulcanization qeeb qeeb, qib ntawm kev sib txuas ntxiv, nws lub zog tensile, 100% ruaj khov 00% kho, 3. 100 ℃ × 24h kev laus, cov qauv ntawm cov khoom khaws cia tau zoo heev Tom qab kev laus ntawm 100 ℃ × 24h, qhov tuav tus nqi ntawm cov qauv kev ua tau zoo yog txhim kho. Thaum cov zinc oxide nquag siv los txo qis, TC90 - TS1 shortens, ML thiab MH hloov tsis tseem ceeb, thiab cov khoom siv ntawm cov roj hmab vulcanized hloov tsis pom tseeb; 2.5 qhov chaw ntawm qhov ntau npaum, qhov kev laus tsis kam ntawm cov roj hmab vulcanized txo qis, yog li tus nqi yuav raug txo mus rau 3 feem ntawm cov tshuaj yuav tsum tau siv.
Qhov zoo ntawm zinc oxide
Los ntawm kev sim cov ntaub ntawv ntawm cov khoom saum toj no, nws tuaj yeem kawm tau tias cov zinc oxide nquag tuaj yeem siv dav hauv ntau yam khoom siv roj hmab.
(1) Nws muaj qhov sib txawv zoo hauv cov khoom siv roj hmab, thiab cov khoom siv lub cev thiab cov khoom siv kho kom zoo tuaj;
(2) Hauv cov txheej txheem vulcanization. Lub sijhawm coking ntawm cov khoom siv roj hmab ntev dua, kev nyab xeeb ntawm vulcanization yog txhim kho, thiab kev ua haujlwm ntawm vulcanization yog txhim kho;
(3) Vim tias qhov loj me ntawm qhov chaw thiab cov khoom me me ntawm cov zinc oxide nquag , nws tuaj yeem siv rau hauv qhov txo qis hauv qhov sib ntxiv ntawm qee cov khoom siv roj hmab.
