Today,i want to tell you how to check the rubber matetial?
The easiest way to do this is to bake at 180 degrees. What is sticky in 10 min is NR, EPDM. is not sticky NR is not resistant to aging, and EPDM biggest advantage is aging resistance.
The smell of vulcanized natural rubber and EPDM is different
The smell of vulcanized natural rubber and EPDM is different from that of natural rubber
Combustion Flame Characteristic Residue and Odor Natural Rubber Pale yellow, translucent, smoky, dull yellow flame, soft rubber odor, residue non-viscous reddish brown ~ grayish brown, hardened, brittle isoprene yellowish yellowish, translucent, smoky, dark yellow flame, soft rubber odor, residue non-viscous reddish brown ~ grayish brown, hardened, brittle cis-butadiene rubber yellowish translucent, smoky, dark yellow flame, soft residue light yellow non-viscous styrene butadiene rubber light yellow translucent, black smoke, dark yellow flame, dark flame, dull flame, soft styrene yellow odor, Slightly expanded non-viscous brown ~ black, hardened, embrittlement nitrile butadiene rubber light yellow ~ light brown, translucent and smoky, dark yellow flame, soft protein burning smell, non-viscous brown ~ reddish brown breakage, resinized butyl rubber colorless, transparent ~ translucent, smokeless, loose flame melt, sweet odor almost unchanged, surface soft EPDM white ~ opaque, smokeless, scattered flame, blue melt, paraffin smell almost unchanged Chloroprene light yellow ~ light brown, translucent flame blue-green expansion, Smell of hydrochloric acid black, hydrochloric acid bubble, hardened silicone rubber white, translucent ~ opaque medium flammable white smoke, bright white flame white ash, odor less softened or dissolved fluorine rubber white ~ opaque extremely difficult to self-extinguish, flame blue soft, toxic gas almost unchanged
NR and EPDM have different smell.Identify by nose!
Three yuan one C good is good! Is not resistant to low temperature! !