H.B. Fuller

Enhanced TDS

Categories: Markets → Industrial → Applications → Chemical & Industrial Manufacturing → Industrial Adhesives & Sealants

Technologies → Adhesives & Sealants → Product Families → Bonding Technology → 2K Liquid Reactive Adhesives

Application Area: Industrial Assembly
Compatible Substrates & Surfaces: Metal,

Plastics,

Aluminum,

Composites,

Steel,

Fiberglass,

Stainless Steel,

Polycarbonate (PC),

Acrylonitrile Butadiene Styrene (ABS),

Vinyl,

Epoxies,

Nylon,

Acrylic,

Polyvinyl Chloride (PVC),

Polyurethane,

Polyethylene Terephthalate (PET),

Polybutylene Terephthalate (PBT),

Phenolics,

RIM Urethane,

Sheet Molding Compound (SMC),

Gelcoat,

Polyether Ether Ketone (PEEK),

Polyphenylene Ether (PPE)

Bonding

For optimum bond strength and to insure maximum performance in the finished assembly mate parts together within the specified working time of the adhesive (7 - 8 Minutes).
Make sure the bond joint has uniform coverage and that a sufficient amount of adhesive is in the bond area.
It is important to have the adhesive applied, parts aligned and positioned, within the established work time for the product.
To ensure maximum performance in the finished assembly parts should remain undisturbed until the joint is sufficiently cured.
For the highest strength bonds surfaces should be clean, dry, and free of contamination.
Extensive surface preparation is not required for AT-4020 and good bonds can be formed on most substrates after asolvent wipe.
However we recommend that metal surfaces (particularly aluminum) be given a scotch brite cleaning to remove surface oxidation to achieve the highest bond strengths.

Cleaning Information

It is important to remove excess adhesive from the substrate before it is cured.
Solvent cleaners such as alcohol or acetone yield good results.
Once the adhesive has cured it will bevery difficult to remove and may require as much as 350° F to soften to allow removal.

Mixing

It is highly recommended that either meter mix equipment or cartridges with static mix nozzles be used toproperly ratio and dispense the adhesive.
For hand mixing, combine Part A and Part B in the correct ratioand mix thoroughly.
Heat buildup during and after mixing is normal.
To reduce the likelihood of exothermic reaction or excessive heat buildup, mix less than 100 grams at a time.
Mixing smaller amounts will minimize heat buildup.

Ready-to-Use Product Features: Excellent Performance,

Excellent Strength,

Good Bonding Strength,

Good Sagging Resistance,

Good Weather Stability,

High Durability,

High Impact Resistance,

High Viscosity,

High Temperature Performance,

Easy To Apply,

Room Temperature Curing,

Fast Fixation,

Excellent Thermal Cycling Performance

Regional Availability

Packaging Information

AT-4020 is conveniently packaged in 50 Ml cartridges.

Effect of Temperature

AT-4020 is best used at temperatures between 65° F and 80° F.
Temperatures below 65° F will slow the cure speed of the material and theviscosities will be higher.
Temperatures above 80° F will cause the material to cure faster and the viscosities will be lower.

Cured Properties

Uncured Properties

Physical Properties of Cured Material


	Value	Units	Test Method / Conditions
Handling Strength (for 75% overall strength)	40	minutes	-
Impact Strength (steel)	20	ft lbs/in²	-
Peel Strength (steel)	20 - 25	-	-
Shear Strength (steel)	2,340 - 3,390	psi	-

Storage Conditions

Shelf life is based on the product being stored properly at a temperature no greater than 72°F.
Exposure to temperatures above 72° F will reduce the shelf life ofthe product.
While refrigeration isn’t necessary it will extend the shelf life of the product in hot climates.
AT-4020 should never be frozen.

Shelf Life

12 months