The invention relates to the technical field of rubber waterstops, and discloses a rubber
waterstop suitable for a low-temperature environment of a tunnel in a cold region and a preparation method of the rubber
waterstop. The rubber
waterstop suitable for the low-temperature environment of the tunnel in the cold region is prepared from the following raw materials in parts by
mass: 100 to 150 parts of
ethylene propylene
diene monomer, 5 to 15 parts of homopolymerized
epichlorohydrin rubber, 20 to 40 parts of
acrylate rubber, 1 to 3 parts of liquid
nitrile rubber, 0.01 to 0.1 part of
phthalic anhydride, 5 to 10 parts of nano
graphene oxide, 1 to 3 parts of tetraethoxysilane, 1 to 2 parts of amino
silane and 40 to 60 parts of reinforcing agent. 1-3 parts of an anti-aging agent, 1-5 parts of a
plasticizer, 1-2 parts of a vulcanizing agent and 1-2 parts of an
accelerant. The obtained
water stop belt is excellent in mechanical performance, tensile strength, tearing strength and
compression set at the low temperature of-40 DEG C are excellent,
cracking is avoided at the low temperature, and the
water stop belt can better adapt to the
extreme environment.