Product Name: cold curing adhesive sc2020
Cold vulcanizing adhesive sc2020 is a two-component,
high-performance adhesive. It is a new type of repair material
needed when carrying out belt repair, belt joint and roller coating
under the cold vulcanization mode. It usually needs the cooperation
of other materials when operating on site. It is suitable for use
in the special environment of coal mine fire and explosion
protection. The product has the characteristics of fast curing at
room temperature, high strength, corrosion resistance, aging
resistance, good bending resistance, fire resistance, etc.
Scope of application: it is applicable to the bonding of rubber and
rubber, metal and rubber, rubber and fabric, fabric and fabric. It
is an ideal adhesive for cold bonding, repairing, roller coating
and various rubber pad materials.
Cold vulcanizing adhesive is a Cr (polychloroprene rubber) based
two-part cold vulcanizing adhesive made from chloroprene rubber
chlorinated by organic solvent. The main ingredient is
tetrachloroethylene, which is a safer organic compound for human
body. Tetrachloroethylene is a non flammable liquid with relatively
stable properties. It can be used in mine or underground work.
Different from the traditional hot vulcanization process, the cold
vulcanization bonding method is more convenient and efficient. Cold
vulcanization bonding is to use sulfur chloride vulcanization
method to complete the vulcanization reaction, and sulfur
cross-linking occurs during the vulcanization process, which means
that one or more sulfur atoms are connected to the polymer chain to
form a bridge structure.
Avoid direct sunlight and prevent the temperature from falling
below 0(condensation may occur).
Bonding surface: dry and clean, free of chemicals, grease and other
Metal: remove rust and roughen metal surface by sand blasting or
grinding (recommended grinding depth is 30um). Before bonding, if
necessary, a layer of metal primer pr-900 shall be applied and
dried completely, so as to improve the adhesion between metal
bonding surface and rubber.
Rubber: for the rubber plate and repair strip with semi
vulcanization layer, the bonding surface does not need to be
polished. For the rubber plate without semi vulcanization layer,
the rubber surface (without smooth area) needs to be fully
polished. The dust shall be removed with clean and dry brush and
the surface stains shall be cleaned with cleaning agent.
Fabric: Polish other rubber areas, gently polish the fabric layer
(note that the fabric layer cannot be damaged, it is recommended to
use a tungsten steel polishing disc), use a clean and dry brush to
remove dust, and use cleaning agent to clean the surface stains.
Mixing: fully mix the cold vulcanized adhesive and R-50 hardener,
the mixing ratio is 100:5, and use the mixture within 2 hours.
Brushing: brush 2 times of uniform coating on the bonding surface.
The first coat shall be completely dry (at least 30 minutes, metal
surface at least 1 hour), the second coat shall be dry to slightly
touch hands (check with the back of fingers), and if it is too dry,
another coat shall be brushed.
1. Suitable for working temperature up to 80 ℃, safe and flame
retardant, and suitable for well and underground use.
2. The shelf life is four years, which is much longer than other
3. Simple tools can work without using large equipment such as
4. In case of emergency repair, repair and use immediately, so as
to minimize the loss of shutdown.
1、 Use the angle grinder installed with tungsten steel grinding
disc to grind the damaged part of the conveyor belt to a thin and
even layer of rubber, and then use the brush to clean the floating
2、 Mix the cold vulcanizing adhesive sc2020 and hardener R-50 in
the proportion of 100:5, and mix evenly.
3、 Brush the polished belt surface and the semi vulcanized layer of
the repair strip evenly with cold vulcanizing adhesive, and then
dry it until the glue liquid feels sticky when touched by hand.
4、 During the bonding, align the bonding part, stick it from front
to back, and use the compaction roller to push it back and forth
from the middle to the four sides for 2-3 times to remove the air.
5、 After bonding, the patching surface is perfectly combined and
integrated after 20 minutes.
matters needing attention:
1. The worki