Txog qee qhov, zinc stearate tuaj yeem hloov pauv stearic acid thiab zinc oxide ib nrab, tab sis stearic acid thiab zinc oxide hauv roj hmab tsis tuaj yeem ua haujlwm tag nrho thiab muaj lawv cov teebmeem.
Zinc oxide thiab stearic acid tsim ib qho kev ua haujlwm hauv lub cev sulfur vulcanization, thiab nws cov haujlwm tseem ceeb yog raws li nram no:
1. Kev ua kom lub kaw lus vulcanization ua haujlwm:
ZnO cuam tshuam nrog SA los tsim cov xab npum zinc, uas txhim kho qhov solubility ntawm ZnO hauv roj hmab, thiab cuam tshuam nrog cov accelerators los tsim ib qho complex nrog solubility zoo hauv roj hmab, ua kom cov accelerators thiab sulfur ua haujlwm, thiab txhim kho kev ua haujlwm ntawm vulcanization.
2. Ua kom cov vulcanizates sib txuas ua ke ntau dua:
ZnO thiab SA tsim cov ntsev zinc uas yaj tau. Cov ntsev zinc raug chelated nrog cov ntawv cog lus sib txuas, uas tiv thaiv cov ntawv cog lus tsis muaj zog, ua rau vulcanization tsim cov ntawv cog lus sib txuas luv luv, ntxiv cov ntawv cog lus sib txuas tshiab, thiab ua rau kom muaj qhov ceev ntawm kev sib txuas.
3. Txhim kho qhov kev tiv thaiv kev laus ntawm cov roj hmab vulcanized:
Thaum siv cov roj hmab vulcanized, cov polysulfide bond tawg thiab cov hydrogen sulfide tsim tawm yuav ua kom cov roj hmab laus sai dua, tab sis ZnO reacts nrog hydrogen sulfide los tsim zinc sulfide, uas noj hydrogen sulfide thiab txo qhov catalytic decomposition ntawm hydrogen sulfide ntawm lub network cross-linked; ntxiv rau, ZnO tuaj yeem xaws cov sulfur bonds tawg thiab ruaj khov cov cross-linked bonds.
4. Cov txheej txheem sib txawv ntawm kev xav:
Hauv cov txheej txheem sib koom tes sib txawv ntawm vulcanization, cov txheej txheem ntawm kev ua haujlwm ntawm cov khoom siv sib txawv ntawm vulcanization yog txawv heev. Cov nyhuv ntawm ZnO thiab SA cov tshuaj tiv thaiv los tsim cov zinc stearate intermediate kuj txawv ntawm kev siv zinc stearate ib leeg.
Lub sijhawm tshaj tawm: Lub Kaum Hli-12-2021
