Chloroprene Rubber Properties

Nws zoo nkaus li cov mis dawb, beige, los yog lub teeb xim av los yog thaiv, ib qho elastomer tsim los ntawm -polymerization ntawm chloroprene (ie, 2-chloro-1,3-butadiene) ua cov khoom siv tseem ceeb. Lub solubility parameter ntawm chloroprene roj hmab yog δ=9.2-9.41. Nws yog soluble nyob rau hauv toluene, xylene, dichloroethane, thiab trivanadium; me ntsis soluble hauv acetone, methyl ethyl ketone, ethyl acetate, thiab cyclohexane; insoluble nyob rau hauv n-hexane thiab hnyav roj av, tab sis soluble nyob rau hauv ib tug sib tov ntawm tsim nyog proportions ntawm zoo thiab tsis zoo solvents thiab non-solvents, los yog tsis zoo thiab tsis-solvent mixs. Nws swells tab sis tsis yaj nyob rau hauv zaub roj thiab ntxhia roj.

Nws muaj cov khoom zoo ntawm lub cev thiab txhua yam, yog roj- tiv taus, tshav kub- tiv taus, nplaim taws- retardant, hnub ci - resistant, ozone- resistant, acid thiab alkali - resistant, thiab tshuaj resistant. Nws qhov tsis zoo yog qhov tsis zoo rau qhov txias txias thiab khaws cia ruaj khov. Nws muaj lub zog tensile siab, elongation, thiab thim rov qab crystallinity, thiab zoo adhesion. Nws yog resistant rau kev laus thiab kub. Nws muaj cov roj zoo heev thiab cov tshuaj tiv thaiv corrosion. Nws cov huab cua tsis kam thiab ozone aging kuj yog thib ob tsuas yog ethylene propylene roj hmab thiab butyl roj hmab. Nws cov cua kub tsis kam yog piv rau nitrile roj hmab, nrog rau qhov kub thiab txias ntawm 230-260 degree. Nws tuaj yeem tiv taus luv luv -lub sij hawm kub ntawm 120-150℃thiab siv tau ntev-lub sij hawm ntawm 80-100℃. Nws kuj muaj qee cov nplaim hluav taws. Nws cov roj kuj yog thib ob tsuas yog cov roj hmab nitrile. Nws muaj kev tiv thaiv zoo rau inorganic acids thiab alkalis. Nws qhov kev tiv thaiv txias yog me ntsis tsis zoo, thiab nws cov hluav taws xob rwb thaiv tsev tsis zoo. Cov roj hmab nyoos muaj kev ruaj khov tsis zoo thiab yuav nthuav tawm "tus kheej-vulcanization," uas ua rau muaj zog Mooney viscosity thiab hardening ntawm cov roj hmab nyoos.