Rubber-Metal Bonding Agent 829GB Cover Coat Adhesive Vulcanization for NR SBR CR EPDM Bonding
Price:
USD 10-18 / Kilogram
MOQ:
100 Kilograms
Delivery Time:
7-15 working days after order confirmation
Brand:
EXCEEDCHEM
Product Description
Product Overview
Rubber to Metal Bonding Agent 829GB is a heavy-metal-free cover coat adhesive specifically formulated for bonding natural and synthetic rubber compounds to metal and non-metal substrates during the vulcanization process. It serves as the topcoat layer in a two-coat adhesive system, providing a robust chemical bridge between the primed substrate and the rubber compound.
Equivalent to Chemlok 6411, Chemosil 411, Cilbond 80E, and Megum 538/128, our 829GB is engineered without heavy metal elements, making it a safer and more environmentally responsible choice for modern rubber-to-metal bonding applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Cover Coat Adhesive / Surface Treatment Agent |
| Appearance | Black viscous liquid |
| Solid Content | 23-28% |
| Viscosity at 25°C | 150-500 mPa·s |
| Density at 25°C | 0.92-1.00 g/cm³ |
| Flash Point | > 10°C (closed cup) |
| Solvent System | Organic solvent based |
| Heavy Metal Content | None detected (formulated without heavy metal elements) |
| Shelf Life | 12 months in unopened original container |
| Storage Conditions | Cool, dry, well-ventilated area away from heat and ignition sources |
Key Features & Benefits
- Heavy-Metal-Free Formula: Formulated without heavy metal elements for safer handling and environmental compliance
- Environmentally Compliant: Meets GB 33372-2020 standards for volatile organic compound emissions in adhesives
- Broad Elastomer Compatibility: Bonds compounds based on NR, IR, SBR, BR, CR, NBR, IIR, and EPDM polymers
- Pre-Baking Resistance: Maintains adhesive integrity during pre-baking cycles prior to vulcanization
- Excellent Weather Resistance: Outstanding resistance to heat aging, water immersion, solvent exposure, oil contact, and salt spray corrosion
- Versatile Application: Can be applied by brush, dip, or spray methods with excellent wetting and uniform film formation
- Shelf Stability: 12-month shelf life when stored properly in original unopened containers
Compatible Elastomer Range
| Elastomer Type | Abbreviation |
|---|---|
| Natural Rubber | NR |
| Natural & Butadiene Rubber Blend | NR + BR |
| Polyisoprene Rubber | IR |
| Butadiene Rubber | BR |
| Chloroprene Rubber | CR |
| Styrene Butadiene Rubber | SBR |
| Nitrile Butadiene Rubber | NBR |
| Butyl Rubber | IIR |
| Ethylene Propylene Diene Monomer | EPDM |
Application Instructions
1. Substrate Preparation: Metal surfaces must be cleaned and degreased. Apply primer (such as 815GB) and allow adequate drying time as specified by the primer product guidelines.
2. Mixing: Stir 829GB thoroughly before use to ensure homogeneous dispersion of all components.
3. Application: Apply a uniform coat over the dried primer layer using brush, dip, or spray method.
4. Drying: Allow the cover coat to dry at room temperature until the solvent has fully evaporated. The surface should be tack-free before rubber application.
5. Vulcanization: Apply the rubber compound and proceed with the vulcanization process according to standard processing parameters.
Safety Note: Contains organic solvents. Use in well-ventilated areas. Keep away from heat, sparks, and open flames. Wear appropriate protective equipment including gloves and eye protection. Refer to the Safety Data Sheet (SDS) before use.
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Company
Qingdao Exceed Fine Chemicals Co.,Ltd
Location
Room 602, Building No. 9, Guoxin Haichuang Industrial Park, No. 50 Binhai Road, Jimo District, Qingdao, Shandong, China. 266000
Contact Person
Louis.liu