ACRYLONITRILE/BUTADIENE COPOLYMER Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
NBR is important for its high oil and temperature resistance.
Flexibility at very low temperatures is obtained with lower
acrylonitrile content: in turn, this sacrifices some oil resistance.
Low-temperature flexibility for some applications can
be modified by plasticizers or blends. Additional properties
include resistance to heat, abrasion, and water, as well as
resistance to gas permeation. NBR is frequently plasticized
with organic phosphate, phthalic ester, or dibenzyl ether.
Verwenden
Applications include fuel lines,
hoses, automobile parts, structural adhesives, oil-resistant
clothing or articles, gloves, and shoe soles and heels.
Gloves made of nitrile rubber are comparable to neoprene
gloves in their resistance to organic solvents; nitrile rubber
gloves were superior in resistance to II-hexane and inferior in
resistance to phenol. NBR is used for hoses, gaskets, and
protective clothing.
Vorbereitung Methode
NBR is produced by polymerization of acrylonitrile and
butadiene in varying proportions. The basic steps are the
emulsion polymerization techniques used for styrene–
butadiene. The process yields both “hot” and “cold” rubber.
Hot rubbers are branched and contain some cross-linked gel.
The more linear cold rubbers are slightly cross-linked by
incorporating divinyl benzene to improve processability and
compression set resistance.
ACRYLONITRILE/BUTADIENE COPOLYMER Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
