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SF 4018 High Cure Adhesive 828and58034 3072

Description

EPON™ Resin 828 and 58034 / EPIKURE™ Curing Agent 3072

 

 

Introduction

This moderate reactivity, rubber modified epoxy adhesive is intended as a general purpose formulation, characterized by development of high bond strengths to a variety of substrates including metals, plastics, concrete and glass. In addition, this formulation adapts itself very well to cure schedules requiring heat and pressure.

 

Suggested Uses

  • Applications requiring higher performance than standard epoxy adhesives, especially improved peel strength and toughness. Adhesion is good with metals, ceramics, glass, wood and polar thermoplastics such as polystyrene, ABS and polycarbonate.

 

Features

  • Rubber modified for improved peel strength and toughness
  • Large cure temperature range: Room temperature to 125°C (257°F)
  • Adhesion to a wide range of substrates

 

Formula

Material

Supplier

Pounds

Gallons

 

Part A

 

 

 

 

EPON Resin 828

Hexion

80.0

8.25

 

EPON Resin 58034

Hexion

20.0

2.38

 

 

Total A

100.0

10.63

 

 

 

 

 

 

Part B

 

 

 

 

EPIKURE Curing Agent 3072

Hexion

32.0

3.95

 

 

Total B

32.0

3.95

 

 

 

 

 

 

 

Total Part A & B

132.0

14.58

 

Mixing Instructions

Part A

Introduce EPON Resin 828 into mixing vessel and begin agitation. Pre-heating is not necessary but heating to 49°C (120°F) will facilitate blending, especially with high shear mixers. Either high shear or planetary mixers should disperse adequately.

While mixing, add and disperse EPON Resin 58034 until uniform blend is obtained.

 

Part B

No mixing required, unless fillers are to be added.

 

This formulation is a basic starting point and can be modified with a large range of commercial fillers, depending on cost/performance requirements.

 

Pigment may be incorporated into either or both portions 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

 

Resin : Curing Agent mix ratio

 

by weight

by volume

3.1 : 1

2.7 : 1

 

Expected Working Life @ 25°C (77°F), 100 grams

min.

45

 

Form / Viscosity @ 25°C

Part A

Part B

Blend

 

cP

cP

cP

 

12,480

700

4,600

 

Density @ 25°C

Part A

Part B

Blend

 

lb/gal

lb/gal

lb/gal

 

9.44

8.10

9.12

 

Application Instructions

All surfaces to be bonded should be clean and free of dust, dirt, grease, oil or other contaminants to ensure maximum adhesion.  Sandblasting or acid etching are the preferred procedures for preparing metal surfaces. Abrasion of the bonded surfaces in combination with vapor degreasing or solvent wiping are other common preparation methods. 

 

Cure Schedule

Room Temperature: 2-3 days @ 25°C (77°F) or Elevated Temperature: Adhesive can be heat cured to shorten cure time.  Maximum cure temperature should not exceed 121°C (250ºF).

 

Typical Cured State Properties

Table 1 / Adhesive Properties – Various Substrates

 

Test Property

Substrate

ASTM

Units

Value

 

Lap Shear Strength @ 25°C (77°F)

Cured 7 days @ 25°C

Cured 15 minutes @ 118°C (245°F)

 

Cured 7 days @ 25°C

Cured 15 minutes @ 118°C

 

Cured 7 days @ 25°C

Cured 15 minutes @ 118°C

 

 

Aluminum

Aluminum 1

 

Epoxy / Glass Laminate

Epoxy / Glass Laminate

 

Cold rolled steel 2

Cold rolled steel 2

D-1002

 

psi

psi

 

psi

psi

 

psi

psi

 

3500

4075

 

4000

4300

 

4400

4875

 

90° Peel Strength @ 25°C, width

Cured 7 days @ 25°C

 

Aluminum foil to Aluminum 1

 

 

lb/in.

 

16 - 18

                                                              1  2024T-3 acid etched

                                                              2  Sand blasted

 

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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