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On February 1, 2022, Hexion Holdings Corporation announced that it has completed the sale of its Coatings and Composite businesses, which includes the epoxy specialty resins and base epoxy resins and intermediates product lines, to Westlake Chemical Corporation. For epoxy coatings and composite product inquiries, please contact customer service at https://www.hexion.com/en-US/company/contact/ or Service@hexion.com.

SF 4004 Ambiant Epoxy Adhesive 828 3125

Description

EPON™ Resin 828 / EPIKURE™ Curing Agent 3125

 

 

Introduction

This epoxy adhesive is especially good at bonding various metal substrates at ambient temperature of 25°C or more. It also provides some tolerance to trace amounts of lubricants which may remain on bond surfaces when cleaning conditions are not ideal.

 

Suggested Uses

  • Bonding of metals, at ambient temperatures. It will also bond well to concrete, glass and many rigid plastics.

 

Features

  • Ability to bond to various metal substrates
  • Tolerance to trace/small amounts of residual surface oil
  • At least one hour working time at 25°C
  • Good strength development in 24 hours

 

Formula

Material

Supplier

Pounds

Gallons

 

Part A

 

 

 

 

EPON Resin 828

Hexion

100.0

10.31

 

Aluminum Powder 120

ALCOA – Specialty Metals Division

100.0

4.44

 

 

Part A

200.0

14.75

 

 

 

 

 

 

Part B

 

 

 

 

EPIKURE Curing Agent 3125

Hexion

54.5

6.73

 

 

Part B

54.5

6.73

 

 

 

 

 

 

 

Total Part A & B

254.5

21.48

 

Mixing Instructions

Disperse the aluminum powder into a portion (50-70%) of the EPON Resin 828 using dispersing equipment capable of mixing viscous, paste-like materials, such as a planetary type mixer. Mix until uniform consistency is attained. Add remaining EPON Resin 828 and mix until a uniform consistency is attained.

 

This formulation is a basic starting point and can be modified with other filler types, such as talc, alumina, ground silica, wollastonite, or calcium carbonate.

 

Modification with silane coupling agents, such as DOW CORNING® Z-6040 silane improves bonds to concrete and glass.

 

Pigment may be incorporated into either or both portion for the purpose of color coding. As with all pigments, their effect on the performance of the final, cured product should be investigated prior to production approval.

 

Typical Handling Properties

Table 1 / Handling Properties

 

 

Units

Value

 

Mix Ratio , resin : curing agent

by weight

by volume

 

 

100 : 27

2.2 : 1

 

Expected Working Life @ 25°C (1 pint)

min.

60

 

Viscosity

Part A/Part B @ 25°C

Part A/Part B @ 40°C

 

---

P

 

Paste

80 -120

 

Application Instructions

All surfaces to be bonded should be free of dust, dirt, grease, or other contaminants. For optimum adhesion it is recommended to roughen bonding surfaces. This can be accomplished with abrasive media appropriate for the materials being bonded (such as medium grit emery paper, abrasive disks, grit blasting, wire brushes, etc.). Abrasion should always be followed by degreasing to remove contaminates and loose particles. Chemical etching is another method to provide a rough surface for improved adhesion.

 

Thoroughly mix the adhesive components and apply immediately by spreading a thin film over the surface to be bonded. Maintain light pressure during cure for optimum bonding.

 

Cure Schedule

Room Temperature: 2-3 days @ 23°C

 or

Elevated Temperature: Adhesive can be heat cured to shorten cure time.  Maximum cure temperature should not exceed 250ºF.

 

Typical Cured State Properties

Table 2 / Adhesive Properties – Aluminum 2024 T-3, Acid Etched

 

Test Property

ASTM

Tested at

Units

Value

 

Tensile Shear Strength

Cured 24 hrs @ 23°C

Cured 48 hrs @ 23°C

Cured 24 hrs @ 23°C

Cured 48 hrs @ 23°C

D-1002

 

25°C

25°C

121°C

121°C

 

psi

psi

psi

psi

 

1500

2050

550

775

 

Typical Adhesive Properties

Table 2 / Adhesive Properties

 

Substrate

Cure Schedule

Tensile Shear Strength

at 25 °C

 

Etched Aluminum, 2024T-3

15 minutes at 25 °C

180 psi

 

 

1 hour at 25 °C

340 psi

 

 

2 hours at 25 °C

900 psi

 

 

3 hours at 25 °C

1800 psi

 

 

24 hours at 25 °C

2600 psi

 

 

3 days at 25 °C

2300 psi

 

 

7 days at 25 °C

2400 psi

 

 

1 day at 25 °C followed by

2 hours at 100 °C

2400 psi

 

 

7 days at 25 °C followed by

7 days water soak

2200 psi

 

Cold-rolled Steel, solvent-wiped

1 day at 25 °C followed by

2 hours at 100 °C

1200 psi

 

 

 

Compressive Shear  Strength at 25 °C

 

Concrete, dry

7 days at 25 °C

>900 (concrete failure)

 

 

 

Tensile Bond Strength

at 25 °C

 

Concrete, dry to steel

3 days at 25 °C

>300 (concrete failure)

 

Concrete, damp to steel

3 days at 25 °C

>300 (concrete failure)

 

Storage

Recommendations regarding storage conditions can be obtained by visiting our web site at www.hexion.com

 

 

General Information

These are starting formulations and are not proven in the user’s particular application but are simply meant to demonstrate the efficacy of the products and to assist in the development of the user’s own formulation.  It is the user’s responsibility to fully-test and qualify the formulation, along with the ingredients, methods, applications or equipment identified herein (“Information”), by the user’s knowledgeable formulator or scientist, and to determine the appropriate use conditions and legal restrictions, prior to use of any Information.

 

Safety, Storage & Handling

Please refer to the MSDS for the most current Safety and Handling information.

 

Exposure to these materials should be minimized and avoided, if feasible, through the observance of proper precautions, use of appropriate engineering controls and proper personal protective clothing and equipment, and adherence to proper handling procedures. None of these materials should be used, stored, or transported until the handling precautions and recommendations as stated in the Material Safety Data Sheet (MSDS) for these and all other products being used are understood by all persons who will work with them. Questions and requests for information on Hexion Inc. ("Hexion") products should be directed to your Hexion sales representative, or the nearest Hexion sales office. Information and MSDSs on non-Hexion products should be obtained from the respective manufacturer.

 

 

Contact Information

For product prices, availability, or order placement, please contact customer service:

www.hexion.com/Contacts/

 

For literature and technical assistance, visit our website at: www.hexion.com

 

 
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