827 Rubber To Metal Bonding Adhesive Used for Rubber Roller
1. Introduction
Adhesive 827 is a rubber-to-metal bonding product. It may be
applied as a cover coat paired with a substrate surface treatment
adhesive, or used as a one-coat system in certain cases.
Its compatibility extends to various rubbers such as Natural Rubber
(NR), Polyisoprene (IR), Polybutadiene (BR), Polychloroprene (CR),
Styrene-Butadiene (SBR), Nitrile (NBR), Butyl (IIR), and
Ethylene-Propylene-Diene Monomer (EPDM).
2. Features
1. Free of chlorinated solvent;
2. Free of heavy metal element;
3. Good bonding performance at low temperature;
4. Good prebrake resistance;
5. Good weather resistance, heat resistance, water resistance,
solvent resistance, oil resistance, salt resistance, corrosion
resistance;
3. Typical Properties
| Components | Polymers, organic compounds, inorganic fillers and organic solvents |
| Color | Black |
| Solids Content | 22~26% |
| Viscosity | (23℃, Brookfield LV2 30rpm) 300～700cps
(23℃, 3 # Zahn Viscosity cup) 30～60 seconds |
| Flash Point | 25~28℃ |
| Diluent | Xylene |
| Solvent | Xylene |
| Shelf life | 12 months at 23℃ for unopened containers |
4. Applying 827
Fully stirring: During the storage of Rubber To Metal Bonding
Adhesive 827, part of it will deposit at the bottom of the
container. It must be fully stirred before applying, and it can be
used only after it is evenly mixed; if the applying process take
long time, it should be stirred at high speed for 3-5 minutes at
intervals of 2 hours.
Dilution: This product can also be appropriately diluted by adding
diluent according to the actual operation needs. It is recommended
to dilute according to the amount used, and the diluted product
cannot be stored for a long time.
Brushing method: No need to dilute;
Roller painting method: No need to dilute;
Dip painting method: 100 parts Rubber To Metal Bonding Adhesive 827
plus about 0-50 parts diluent;
Spraying method: 100 parts Rubber To Metal Bonding Adhesive 827
plus about 30-80 parts diluent.
Applying: Rubber To Metal Bonding Adhesive 827 can be applied by
brush painting, dip painting, roller painting, spraying and other
methods. The coating should be even, avoid excessive overflow.
Cover-coat use: dry film thickness 10-20μm, caustic environment
resistance 20-25μm;
One-coat use: dry film thickness 15-25μm, caustic environment
resistance 25-35μm;
Drying: It takes about 40-60 minutes to dry at room temperature,
and forced drying can shorten the drying time.
Storing: Rubber To Metal Bonding Adhesive 827 should be stored in a
dry and room temperature environment, avoid exposure to high
humidity and high temperature environment for a long time.
Adhesive removal: Use a rag to dip in xylene solvent to remove
excess adhesive overflowing around before heating and curing. Once
cured, it cannot be removed by solvent.
Curing: The best bonding performance can be obtained by curing
rubber and the adhesive at the same time. When the painted part is
placed in the molding die, it should be quickly filled with rubber
and clamped to cure. Actual cure conditions depend on compound cure
conditions.
5. Notes
1) The solvent is volatile, please cover the container tightly
after use.
2) The solvent vapor is harmful; the workplace should be
fireproof and ventilated to prevent long-term inhalation or
long-term skin contact.
3) For more safety information, please refer to MSDS.
