Cilbond® 80ET

Bonding Capabilities: 

When used with Cilbond 12E (solvent-based primer) or Cilbond 62W (water-based primer), Cilbond 80ET will bond the elastomers listed below to a range of metal and plastic substrates during the vulcanisation and post-vulcanisation processes:-

• Natural Rubber (NR)
• Styrene Butadiene Rubber (SBR)
• Polychloroprene (CR)
• Polyisoprene Rubber (IR)
• Nitrile Rubber (NBR and XNBR)
• Hydrogenated NBR (HNBR sulphur or peroxide cured)
• Polybutadiene Rubber (BR)
• Ethylene Propylene Copolymer (EPM)
• Ethylene Propylene Diene Terpolymer (EPDM sulphur or peroxide cured and silicone modified)
• Butyl Rubber (IIR)
• Halogenated Butyl Rubber (CIIR and BIIR)
• Epichlorohydrin Rubber (ECO)
• Chlorosulphonated Polyethylene (CSM and ACSM)
• Ethylene Ethyl Acrylate (Vamac®)
• Ethylene Vinyl Acetate (EVA / EVM)
• Acrylic Rubber (ACM)
• Chlorinated Polyethylene (CPE)
• Millable Polyurethane (Sulphur or peroxide cured)

Cilbond 80ET also gives excellent adhesion to RFL-treated fabrics and finds uses in high-performance timing belts, hoses and carriage belts, especially where severe environments are present such as high temperatures and fluids.

In-Service Benifits: 
Components produced with Cilbond 80ET exhibit excellent properties in service. For maximum resistance to heat, fluid (including water, oils, ester oils, brake fluids, glycol mixtures) and salt-spray, Cilbond 12E is the recommended primer. Other in-service benefits include :

• Components produced using Cilbond 12E / 80ET survive long term in-service temperatures over the range from -80oC to +200oC and exhibit excellent dynamic performance tests at up to 180 C.
• When components made with Cilbond 12E / 80ET are heated short term/intermittently, the maximum heat resistance is compound dependent, but is generally up to 220oC or even higher.
• Cilbond 12E / 80ET shows no failure when subjected to a boiling water peel test under a 2kg load for 100 hours or the severe boiling water test conducted under a 12 kg load for 24 hours.
• Cilbond 12E / 80ET passes the 504 hour Volvo hot water test at 70 C.
• Cilbond 12E / 80ET passes long term glycol tests at 160 C for ≥500 hrs.
• Cilbond 12E / 80ET shows no failure when subjected to total immersion in a 50/50 wt/wt mix of water/glycol at 120 C for 360 hours.
• Cilbond 12E / 80ET exhibits excellent resistance to the DIN EN ISO 9227:2006-10 salt spray test with minimal edge failure after 500 hours in 5% salt at 35oC, with 30% extension on the elastomer.

The Cilbond 62W / 80ET system also exhibits excellent salt-spray, hot fuel and oil resistance properties. This is an ideal system which both meets current legislation covering lead and other heavy metals and also the need to reduce VOC emissions.
The Cilbond 10E / 80ET system is recommended for Rubber Roller manufacturers, offering a versatile two- coat system for many different compounds. The Cilbond 10E can then also be used as a one-component system for rollers from NBR and PVC / NBR, offering material and time savings.

Agitation: Cilbond 80ET must be thoroughly stirred before use, preferably with a propeller type agitator.
Brushing: Cilbond 80ET can be brush applied without the need for dilution. If required (especially if covering large areas), dilute with up to 20% Xylene or Toluene.
Spraying: It is normal to dilute Cilbond 80ET to 16-24 seconds on a Zahn 2 cup or 13-20 seconds on a DIN 4 or Ford 4 cup using Toluene or Xylene. Xylene is the preferred diluent, though Toluene is preferred at low ambient temperatures. A nozzle size of 1.0 - 1.5mm is recommended with an air pressure of 1.5 bar (excessive pressure can lead to cob-webbing).
Generally the use of 25 - 40 parts of diluent to 100 parts of Cilbond 80ET, by volume is a typical dilution. In hot and/or humid conditions fibrillation (cob-webbing) may occur and under such conditions dilute to closer to 13 seconds on a DIN 4 cup using Xylene.
Dipping: For Dipping processes, Cilbond 80ET should be diluted to 18-26 seconds on a Zahn 2 cup or 16 - 22 seconds on a DIN 4 or Ford 4 cup. Toluene is the preferred diluent for dipping but it is possible to use Xylene, Methylene Chloride, Butyl Acetate and many other solvents. Do not use ketone based solvents.
Roller Coating: The viscosity of Cilbond 80ET is suitable for most roller and knife coating applications, even for fabrics.
Dilution: CIL recommends Xylene or Toluene to dilute Cilbond 80ET.
Coating thickness: Cilbond 80ET should be coated at a dry film thickness of 12.5 - 25 microns.
​​​​​​​Drying: Allow 20 to 40 minutes drying time at room temperature. If necessary, forced drying of parts at up to 70°C will reduce the drying time, although care should be taken to avoid blistering. Pre-warming the metals to ~60oC will also reduce drying times.
Pre-baking: Limited pre-baking is possible with Cilbond 80ET, though high-temperature pre-bakes should be avoided. The pre-bake of a bonding agent is always compound dependent, so each compound should be tested as required. In general, the maximum pre-bake for Cilbond 80ET is 20-30 minutes at 155°C
Where to Use: 
Due to its superior performance and environmental resistance, Cilbond 80ET is used extensively in demanding industries such as Automotive and Off-shore, producing components such as :

• Hydromounts and TVD’s
• Pump Linings and Tank Linings
• Hoses
• Rollers
• Other rubber to metal bonded components.

Cilbond 80ET is supplied in 10 litre, 25 litre and 200 litre containers. 250ml trial samples are also available upon request.