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MEGUM® W-9301
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Producer: 
DuPont
Brand: 
MEGUM
MEGUM® W-9301 is a waterborne primer adhesive used in combination with a MEGUM®, ROBOND® or THIXON® adhesive cover coats, for bonding rubber compounds to metals and other rigid substrates during vulcanisation. MEGUM® W-9301 features good resistance against various fluids, e.g. brake, cooling and hydraulic fluids. Due to the formation of comparatively flexible film, this primer is especially suitable for rubber-to-metal parts which are being shaped after vulcanisation.

MEGUM® W-9301

Producer: 
DuPont
Brand: 
MEGUM
MEGUM® W-9301 is a waterborne primer adhesive used in combination with a MEGUM®, ROBOND® or THIXON® adhesive cover coats, for bonding rubber compounds to metals and other rigid substrates during vulcanisation. MEGUM® W-9301 features good resistance against various fluids, e.g. brake, cooling and hydraulic fluids. Due to the formation of comparatively flexible film, this primer is especially suitable for rubber-to-metal parts which are being shaped after vulcanisation.
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Identification & Functionality

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Features & Benefits

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CASE Ingredients Features

Properties

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Carrier Type
Color
Typical Properties
ValueUnitsTest Method / Conditions
Density980 - 1020kg/m³ISO 845
Solid Content14 - 16%
Other Properties
ValueUnitsTest Method / Conditions
Dry Film Density (Calculated)1.7
pH8
VDA Properties
ValueUnitsTest Method / Conditions
Volatile Organic Compounds10kg/m³
Application Technique
ValueUnitsTest Method / Conditions
Dilution Brushingundilutedparts diluent
Dilution Dippingundilutedparts diluent
Dilution Sprayingundilutedparts diluent
Drying Time15 - 30min
Recommended Film Thickness5 - 15µm
Theoretical Coverage9m²/L
Rheological Properties
ValueUnitsTest Method / Conditions
Viscosity (#4 Ford / DIN cup, at 23°C)max. 30%
Color
Gray

Technical Details & Test Data

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Composition

MEGUM® W-9301 consists of reactive polymers and pigments in water. It is formulated without reportable levels of lead or other toxic heavy metals.

Materials

MEGUM® W-9301 adheres to hot and cold rolled steel, stainless steel, aluminium, brass as well as thermoplastics such as polyamides and polyesters.

Additional Information

Adhesives

Moulding & Curing

MEGUM W 9301 can be used with all common moulding and curing methods. Cure temperatures up to 190ºC are possible.

Preliminary Surface Preperation

Properly preparing the metal surface is essential to obtaining consistent, high quality bonds. A mechanical or chemical pre-treatment should follow degreasing. Common pre-treatments are grit blasting and phosphating. Further details are provided in our "Substrates Preparation Guide", please contact your usual DuPont representative should you need a copy of this guide.

Mixing & Diluting

Diluents: Use deionized or distilled water.
MEGUM W 9301 is a thixotrope fluid; therefore a proper mixing with a propeller-type or anchor-type agitator must be carried out at first. Adding a small portion of water shortens the time necessary to break the thixotropy. Agitation speed has to be adjusted to prevent foam formation. Necessary mixing time depends on packaging size and stirring conditions. Continue to mix while spraying to keep the dispersed solids from settling to the bottom. This will assure that a homogeneous mixture of the adhesive is applied.

Applying the Adhesive

MEGUM W 9301 can be applied by brushing, spraying or other application methods. Best results however were obtained by spraying with air. The rigid substrate should be pre-warmed at 50 °C to 80 °C prior to the application.

  • Brushing : Dilution ratio: Apply undiluted
  • Dipping : Dilution ratio: Apply undiluted. If dilution is required, use deionized or distilled water.
  • Spraying with air : 
    Dilution ratio: Apply undiluted.
    Spray gun: Most spray equipment can be used. Internal fitting should be plastic or stainless steel for use with waterborne products.
    Nozzle: e.g. 1.0 mm 
    Air pressure: 2 - 4 bar

Drying Time

The drying time is approximately 15 - 30 min at 20 °C. However it is recommended to dry at higher temperatures, e.g. 5 - 10 minutes forced drying at 80 °C. Heated circulating air can accelerate drying further. Do not dry at temperatures above 120°C.

Dry Film Stability

MEGUM W 9301 has excellent dry film stability. Inserts coated with MEGUM W 9301 can be stored for several weeks, if protected from contamination. It is always best, however, to mold coated inserts as soon as time permits.

Cleaning

Equipment can be cleaned with ordinary tap water as long as the adhesive is still wet. Dried adhesives can be washed off with solvents like methylethylketone (MEK). Further details are given in our "General Guide to Use", please contact your usual DuPont representative should you need a copy of this guide.

Safety

Before using this product, consult the Material Safety Data Sheet (MSDS)/Safety Data Sheet (SDS) for details on product hazards, recommended handling precautions and product storage. These sheets contain important information that you may need to protect your employees and customers against any known health and safety hazards associated with our products. We also suggest that you contact your suppliers of other materials recommended for use with our products for appropriate health and safety precautions before using them. For personal protection see section EXPOSURE CONTROLS/PERSONAL PROTECTION of the MSDS. Avoid contact with skin and eyes. Do not breathe vapors or spray mist.

Storage

Store products in tightly closed original containers in a cool, dry, well-ventilated place. Avoid temperature extremes during storage, temperature below 20°C is preferred. Store out of direct sunlight. Keep from freezing. Avoid storage temperatures below 0°C.

Chemical Media Resistance

Mineral oils

  • Insulating Oil, 23°C

Salt solutions

  • Sodium Chloride solution (10% by mass), 23°C

Other

 

  • Ethylene Glycol (50% by mass) in water, 108°C
  • Water, 23°C
  • Water, 90°C

 

Storage & Handling

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Shelf Life
6 months

Documents (1)

Name
Type
MEGUM™ W 9301 Technical Data Sheet
Technical Data Sheet