1. Txhais cov roj hmab
Lo lus "rubber" los ntawm Indian lus cau uchu, uas txhais tau tias "tso ntoo".
Cov ntsiab lus hauv ASTM D1566 yog raws li hauv qab no: roj hmab yog cov khoom siv tau sai thiab zoo rov qab nws cov deformation nyob rau hauv loj deformation thiab tuaj yeem hloov kho.Cov roj hmab hloov tsis tuaj yeem ua tau (tab sis tuaj yeem ua tau) yaj hauv cov kuab tshuaj kub kub xws li benzene, methyl ethyl ketone, ethanol toluene sib tov, thiab lwm yam. Cov roj hmab hloov tau ncav mus rau ob zaug nws qhov ntev ntev ntawm chav tsev kub thiab khaws cia rau ib feeb.Tom qab tshem tawm cov quab yuam sab nraud, nws tuaj yeem rov qab los tsawg dua 1.5 npaug ntawm nws qhov ntev ntev hauv ib feeb.Qhov kev hloov kho tau xa mus rau hauv lub ntsiab lus tseem ceeb yog hais txog vulcanization.
Cov saw hlau molecular ntawm roj hmab tuaj yeem sib txuas.Thaum cov roj hmab sib txuas yog deformed nyob rau hauv sab nraud quab yuam, nws muaj peev xwm rov qab tau sai, thiab muaj lub cev zoo thiab txhua yam khoom thiab tshuaj stability.Me ntsis crosslinked roj hmab yog cov khoom siv siab elastic.
Roj Hmab yog cov khoom siv polymer, uas muaj ntau tus yam ntxwv ntawm cov ntaub ntawv ceev, cov permeability tsawg, rwb thaiv tsev, popoelastic thiab ib puag ncig laus.Tsis tas li ntawd, cov roj hmab yog mos thiab tsis tshua muaj hardness.
2. Kev faib tawm tseem ceeb ntawm cov roj hmab
Roj hmab tau muab faib ua cov roj hmab ntuj thiab hluavtaws roj hmab raws li cov khoom siv raw.Nws tuaj yeem muab faib ua cov roj hmab nyoos, latex, kua roj hmab thiab hmoov roj hmab raws li cov duab.
Latex yog ib qho dej colloidal dispersion ntawm roj hmab;Cov kua roj hmab yog oligomer ntawm cov roj hmab, uas feem ntau yog cov kua nplaum ua ntej vulcanization;
Cov hmoov roj hmab yog siv los ua cov latex rau hauv cov hmoov rau batching thiab ua.
Cov roj hmab thermoplastic tsim nyob rau xyoo 1960 tsis xav tau cov tshuaj vulcanization, tab sis siv cov khoom tseem ceeb ntawm cov thermoplastic plastics los tsim.Roj hmab tuaj yeem muab faib ua hom dav dav thiab hom tshwj xeeb raws li kev siv.
3. Kev siv roj hmab
Roj hmab yog cov khoom siv raw khoom ntawm kev lag luam roj hmab, uas yog dav siv los tsim cov log tsheb,roj hmab hoses, daim kab xev,roj hmab stopper, cables thiab lwm yam khoom siv roj hmab.
4. Kev siv cov khoom siv roj hmab vulcanized
Cov khoom siv roj hmab vulcanized yog tsim nrog kev lag luam tsheb.Txoj kev loj hlob sai ntawm kev lag luam tsheb thiab kev lag luam petrochemical hauv xyoo 1960 tau txhim kho qib kev lag luam roj hmab ntau lawm;Nyob rau xyoo 1970, txhawm rau ua kom tau raws li qhov xav tau ntawm kev kub ceev, kev nyab xeeb, kev txuag hluav taws xob, kev tshem tawm cov pa phem thiab kev tiv thaiv kev ua qias tuaj ntawm lub tsheb, cov log tsheb tshiab tau txhawb nqa.Cov khoom siv roj hmab nyoos muaj feem ntau hauv kev thauj mus los.
Piv txwv li;Lub tsheb Jiefang 4-tuj xav tau ntau tshaj 200 kg ntawm cov khoom siv roj hmab, lub rooj zaum nyuaj yuav tsum tau nruab nrog ntau tshaj 300 kg ntawm cov khoom siv roj hmab, lub nkoj 10000 tuj xav tau ze li ntawm 10 tons ntawm cov khoom siv roj hmab, thiab lub dav hlau dav hlau xav tau ze li ntawm 600 kg ntawm roj hmab.Hauv kev thauj mus los hauv hiav txwv, av thiab huab cua, tsis muaj leej twg tuaj yeem ua yam tsis muaj roj hmab vulcanized khoom.
Post lub sij hawm: Jan-03-2023