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SF 4002 High Cure Adhesive 8021 3271

Description

High Strength, Room Temperature Cure Adhesive

Introduction

This moderate reactivity, filled epoxy adhesive is a general purpose formulation characterized by development of high bond strength to a variety of substrates including metals, plastics, concrete, and glass.

 

Suggested Uses

General purpose bonding of

  • Metals
  • Concrete
  • Glass and many rigid plastics

 

Features

  • Moderate gel times, 15-20 minutes for 100 grams
  • High Lap shear strength
  • Bonds to damp concrete
  • Medium viscosity thixotropic liquid

 

Formula

Material

Supplier

Pounds

Gallons

 

Part A

 

 

 

 

EPON Resin 8021

Hexion

100.0

10.88

 

Cab-O-Sil M-5

Cabot Corp.

5.0

0.28

 

Novacite 1250

Malvern Minerals Co.

150.0

6.80

 

 

Part A

255.0

17.96

 

 

 

 

 

 

Part B

 

 

 

 

EPIKURE 3271 Curing Agent

Hexion

19.0

2.22

 

 

Part B

19.0

2.22

 

 

 

 

 

 

 

Total Part A & B

274.0

20.18

 

Mixing Instructions

Disperse the Cab-O-Sil M-5 into a portion of the EPON Resin 8021 using a Cowles Dissolver, 3-roll mill, or other suitable high shear dispersing technique. Add the remaining EPON Resin 8021 and the Novacite 1250 to the resulting dispersion and mix, using conventional mixing equipment, until all of the Novacite 1250 has been wetted and a uniform consistency is attained.

 

Filler types such as aluminum powder, talc, alumina, wollastonite, and calcium carbonate may be used.

 

Modification with silane coupling agents, such as Z-6040 Epoxy Silane from Dow-Corning, improves bonds to concrete and glass.

 

Pigment may be incorporated into either or both portions for purposes of color coding.

 

Typical Handling Properties

Table 1 / Handling Properties

 

 

Units

Value

 

Resin/Converter Combining Ratio

by weight

11.5 : 1

 

 

by volume

6.8 : 1

 

Viscosity at 25 °C

 

 

 

Resin Portion

 

 

 

at 1 rpm

cP

15,600

 

at 5 rpm

cP

7,360

 

at 10 rpm

cP

5,680

 

at 50 rpm

cP

3,300

 

Converter Portion

cP

150

 

Pounds/Gallon

 

 

 

Resin Portion

lbs/gal

14.20

 

Converter Portion

lbs/gal

8.56

 

Combined System

lbs/gal

13.58

 

Gel Time at 25 °C, 100 gram mass

min.

17

 

Application Instructions

Surfaces to be bonded should be clean and free of dust, dirt, greases, or other extraneous material. Mix the adhesive components and apply immediately by spreading the material in a thin film over the surface to be bonded. Maintain light pressure during cure to achieve the best bond.

 

Typical Adhesive Properties

Table 2 / Adhesive Properties

 

Substrate

Cure Schedule

Tensile Shear Strengthat 25 °C

 

Aluminum, Alloy 2024T-3

24 hours at 25 °C

3,000 psi

 

Acid Etched

7 days at 25 °C

3,400 psi

 

 

24 hours at 25 °C plus

2 hours at 100 °C

4,200 psi

 

 

7 days at 25 °C plus

7 days water soak

2,900 psi

 

Aluminum, Alloy 2042T-3, solvent wiped

24 hours at 25 °C plus

2 hours at 100 °C

2,000 psi

 

Cold-rolled Steel, solvent-wiped

24 hours at 25 °C plus

2 hours at 100 °C

2,200 psi

 

High Impact Polystyrene, solvent wiped

7 days at 25 °C

940 psi

 

Polyvinyl Chloride, solvent wiped

7 days at 25 °C

360 psi

 

 

 

Compressive Shear Strength at 25 °C

 

Concrete, dry

7 days at 25 °C

>900 (concrete failure)

 

Concrete, damp

7 days at 25 °C

>900 psi (Concrete Failure)

 

 

 

Tensile Bond Strength

at 25 °C

 

Concrete, damp to steel

3 days at 25 °C

>300 psi (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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