Raws li ib hom tsis-polar roj hmab nrog cov roj av loj, cov kev ua haujlwm loj, thiab lwm yam qib ethylene prantenene roj hmab. Txawm li cas los xij, muaj ntau cov qib ntawm cov roj hmab prosylene, thiab cov khoom siv ua kom tsim nyog, thiab cov ntsiab lus, mooney viscosity Cov ntsiab lus, thib peb monomer cov ntsiab lus thiab mooney viscosity ntawm kev ua tau zoo ntawm cov khoom. Ib qho kev tshawb fawb tau ua tiav lawm, uas muaj qee qhov tseem ceeb.
Nrog rau kev txhim kho cov thev naus laus zis thiab cov zej zog, cov neeg xav tau rau cov khoom siv roj hmab thiab cov xim muaj zog rau cov roj hmab kom zoo nkauj yog ua rau muaj txoj haujlwm tseem ceeb.
Raws li tus neeg sawv cev txhawb nqa kev siv cov khoom siv roj hmab, silica yog ua si txoj haujlwm tseem ceeb.
Cov txiaj ntsig thiab kev sib tham
1 Vulcanization Kev Ua Tau Zoo ntawm Kev Khaus Ntau Yam Khoom Siv Roj Hmab
Cov nyhuv ntawm cov ntsiab lus ethylene ntawm lub hlawv-nyob rau hauv lub sij hawm (TC10) thiab cov txheej txheem zoo ntawm ethylene prantenived roj hmab.
(Cov txiaj ntsig ntawm cov ntsiab lus ethylene ntawm lub sijhawm kho kom zoo nkauj (TC10) thiab cov txheej txheem yog qhov sib xws ntawm cov ntsiab lus ntawm ethylene los yog tib yam, qis dua cov ntsiab lus ntawm lub thib peb Monomer, tus luv dua cov khoom siv TC10 thiab TC90; Qhov tsawg kawg nkaus torque (ml) ntawm cov khoom siv, qis dua cov ntsiab lus ntawm lub thib peb monomer.
Qhov tsawg kawg nkaus torque (ml) ntawm cov khoom siv tau cuam tshuam los ntawm cov ntsiab lus ethylene, qhov ntau dua ntawm cov roj hmab, qhov tseem ceeb tshaj plaws ntawm cov roj hmab, qhov tseem ceeb tshaj plaws ntawm cov roj hmab, qhov tseem ceeb tshaj plaws ntawm cov roj hmab, qhov tseem ceeb tshaj plaws ntawm cov khoom siv ntawm cov khoom siv ntawm cov khoom siv ntawm cov khoom siv yog qhov zoo Ib feem protortion rau cov nyiaj pab peb monomer cov ntsiab lus ntawm cov khoom, qhov ntau dua cov modulus ntawm cov khoom, ntau dua cov modulus ntawm cov khoom. Rau tib yam los yog cov ntsiab lus ethylene, qhov siab dua ntawm cov ntsiab lus thib peb Monomer, ntau dua cov modulus. Qhov sib txawv ntawm lub siab tshaj plaws thiab qis tshaj plaws torque (MH -ML) yog siv cov ntsiab lus uas ethylene ntau dua ntawm cov khoom siv roj hmab, thiab cov ntsiab lus siab dua ntawm cov khoom sib txuas ntawm cov khoom siv kuj siab dua.
2 Cov Khoom Siv Neeg Kho Tshuab Ntawm Cov Txheej Txheem Sib Txawv Proxylene
Lub hardness ntawm cov roj hmab feem ntau cuam tshuam los ntawm cov ntsiab lus ethylene, qhov siab dua lub hardness ntawm cov roj hmab, peb cov ntsiab lus thib peb tau tsis tshua muaj cuam tshuam rau lub hardness; cov khoom siv tensile zog thiab kua muag los ntawm ethylene ntau dua, cov khoom siv ethylene yog tib yam, ntau dua cov khoom siv tensile, siab dua cov khoom siv tensile lub zog, qhov siab dua cov khoom siv Lub zog tensile, qhov ntau dua cov khoom siv tensile lub zog, lub siab dua cov khoom siv tensile lub zog thiab rhuav lub zog. Similarly, the higher the third monomer content, the higher the tensile strength and tear strength of the material, indicating that the ethylene content and the third monomer content on the strength of the effect of synergistic effect; Ethylene cov ntsiab lus thiab tus thib peb monomer ntsiab lus yog zoo ib yam li kev cuam tshuam rau cov ntsiab lus ntawm cov khoom, qhov siab dua ntawm cov khoom siv tensile sib raug zoo dua; Ethylene cov ntsiab lus ntawm lub kaum tensile elongation ntawm ib qho me me, nyob rau hauv ib qho kev nce siab, rau ib qho kev nce siab, lub zog nce zuj zus, rau ib qho ntsiab lus, qhov siab dua ntawm cov ntsiab lus thib peb Monomer. Within a certain range, the elongation at break gradually increases with the increase of ethylene-based content, and then starts to decrease gradually after a certain degree, the third monomer content is inversely proportional to the change of elongation at break, for the same or similar ethylene-based content, the lower the content of the third monomer is, the greater the elongation at break of the material is; Qhov kev ua tau zoo ntawm cov khoom muaj kev sib raug zoo dua nrog nws lub hardness thiab lub zog, qhov kev ua kom me me, thiab lub zog nqus me me raws li, thiab kev ua haujlwm puas yuav zoo dua; Raws li cov txheej txheem ua kom muaj kev sib deev nce ntxiv, muaj qee qhov kev sib raug zoo ntawm lub hardness thiab lub zog thiab qhov ua tau zoo ntawm cov khoom. Cov khoom siv tawv tawv thiab lub zog muaj qee qhov kev nce qib, tab sis cov ntsiab lus abrasive, yog qhov tseeb ntawm cov ntsiab lus ethylene, peb tus monomer cov ntsiab lus tsis muaj kev cuam tshuam rau nws cov kev muaj zog tsawg.
3 Lub Zog Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob Tshav Kub Kub Kub-Resistant Cua Laus Kev Ua Haujlwm
Nws tuaj yeem pom tau tias, tom qab kev laus ntawm 160 ℃ rau 24h, lub zog ua kom muaj zog me ntsis, tab sis kev ua kom muaj tag nrho cov nqi sib npaug Qhov no yog vim ethylene-roj hmab yog cov roj hmab nrog cov roj khov loj, uas muaj cov cua tsis muaj cua ntau dua. Vim tias cov huab cua kub zoo tshaj plaws tiv thaiv roj hmab, nws yog qhov nyuaj los qhia cov txiaj ntsig ntawm cov khoom siv ethylene ntawm cov khoom siv luv luv ntawm huab cua luv luv.
4 Txawv Ethylene Propylene Roj Hmab Roj Hmab Uas Tsis Txaus
Nrog rau kev nce ntawm cov ntsiab lus ethylene, qhov tsawg kub tsis kam ntawm cov khoom lag luam maj nrawm.
With the increase of ethylene content, the low temperature resistance of the material gradually deteriorates, the same or similar ethylene content, the lower the content of the third monomer, the better the low temperature resistance of the material, this is because the ethylene content of ethylene propylene rubber increases, the degree of its molecular regularity will be higher and higher, and the ability of the macromolecules to crystallize is also gradually rising [10]. Qhov nce ntawm crystallization muaj peev xwm ua rau kom muaj zog ntawm cov khoom siv molecatible raws li tag nrho, yog li ntawd cov khoom kub tsis kam ntawm cov khoom tsis txaus ntseeg. Thaum cov ntsiab lus ntawm cov pab pawg ua kom sib ze yog ze rau txhua tus, cov qis dua ntawm cov ntawv me me ntawm cov khoom siv, thiab txhim kho qhov kub tsawg tsis kam ntawm cov khoom.
Tag
(1) Cov qib sib txawv ntawm ethylene roj hmab, nws cov ntsiab lus ethylene muaj qhov zoo tshaj plaws ntawm kev ua tau zoo, thiab muaj ib qho cuam tshuam loj dua ntawm lwm cov khoom.
(2) Rau tib peb tus monomer hom thiab cov ntsiab lus ntawm ethylene cov roj hmab, qhov zoo dua rau cov neeg siv hluav taws xob, tab sis nws txoj kev tiv taus cua sov, tab sis nws txoj kev tiv thaiv huab cua, tab sis nws txoj kev tsis txaus siab, tab sis nws txoj kev tsis txaus siab, tab sis nws txoj kev tsis txaus siab, tab sis nws txoj kev tiv taus cua sov, tab sis nws txoj kev tsis txaus siab, tab sis nws txoj kev tiv taus huab cua tsis zoo.
(3) rau tib cov ntsiab lus ethylene prantenene antylene roj hmab, qhov ntau dua cov ntsiab lus ntawm lub zog, qhov zoo dua qub thiab cua kev tiv thaiv, tab sis cov kub tsis kam.
