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Technical Data Sheet

 

Re-issued September 2001

 

 

EPON™ Resin 58901

 

 

Product Description

EPON™ Resin 58901 is an elastomer modified epoxy functional adduct formed from the reaction of EPON Resin 828 and a carboxylated butadiene-acrylonitrile elastomer. Elastomer content is approximately 5% by weight. The primary use of EPON 58901 is in the modification of conventional epoxy systems to increase flexibility and impart tack to provide early green strength to adhesive systems.

 

Benefits

  • Broad compatibility with conventional bisphenol A epoxies
  • High viscosity
  • Imparts tack and early green strength into adhesive systems

 

Sales Specification

Property

Units

Value

Test Method/Standard

Epoxide Equivalent Weight

g/eq

195 – 210

ASTM D1652

Viscosity at 25°C

P

1,000 – 5,000

ASTM D2196

Color

Gardner

5 max.

ASTM D1544

Solids

% wt.

99.0 min.

ASTM D1259

Acidity as KOH

mg/g

0.2 max.

ASTM D1639

 

 

 

 

 

Typical Properties

Property

Units

Value

Test Method/Standard

Density at 25°C

lb/gal

9.3

 

Specific Gravity

g/ml

1.12

 

 

 

 

 

 

 

General Information

 

Concentration of this modifier required for optimum performance is dependent upon such factors as resin type, curing agent type, and specific performance requirements.

 

Typical handling and adhesive properties, when cured with a representative aliphatic amine, and accelerated amidoamine, a modified cycloaliphatic amine, and a non-MDA based aromatic amine are listed in Tables 1, 2 and 3.

 

Performance Properties

 

Table 1 / Effect of EPON™ Resin 58901 Concentration on Handling and Adhesive Properties of an Epoxy System

 

 

Method

Units

A

B

C

D

EPON Resin 58901

 

pbw

100

80

60

40

EPON Resin 828

 

pbw

---

20

40

60

Triethylenetetramine

 

pbw

11.6

11.9

12.1

12.3

 

 

 

 

 

 

 

Handling Properties @ 25°C

 

 

 

 

 

 

Resin Blend Viscosity

 

cP

338,000

208,000

132,000

70,000

System Viscosity

 

cP

27,500

20,200

13,600

6,800

Gel Time, 100 gram mass 1

 

minutes

39

36

29

25

 

 

 

 

 

 

 

Cure Schedule

 

wk/°C

1/25

1/25

1/25

1/25

 

 

 

 

 

 

 

Cured State Properties 2

 

 

 

 

 

 

Hardness

 

Shore D

85

86

85

85

Tensile Shear Strength

ASTM D638

 

 

 

 

 

Aluminum/Aluminum 3

 

psi

1,165

1,060

1,175

1,105

Steel/Steel 4

 

psi

3,665

3,450

3,640

3,675

90° Peel Strength

 

 

 

 

 

 

Aluminum/Aluminum 5

 

lbs/inch

10-11

10-11

10-11

10-11

 

 

 

 

 

 

 

1 Cured incompatible in mass.

2 Determined at 23°C following one week cure at 25 °C.

3 Acid etched 2024T3 aluminum coupons.

4 Sandblasted cold-rolled steel coupons.

5 5 mil aluminum foil bonded to 2024T3 backing-both acid etched.

 

Table 2 / Effect of EPON™ Resin 58901 Concentration on Handling and Adhesive Properties of an Epoxy System

 

 

Method

Units

A

B

C

D

EPON Resin 58901

 

pbw

100

80

60

40

EPON Resin 828

 

pbw

---

20

40

60

EPIKURE™ Curing Agent 3072

 

pbw

31.1

31.9

32.5

33.0

 

 

 

 

 

 

 

Handling Properties @ 25°C

 

 

 

 

 

 

System Viscosity

 

cP

33,000

29,600

21,000

15,000

Gel Time, 100 gram mass

 

minutes

47

50

48

42

 

 

 

 

 

 

 

Cure Schedule

 

wk/°C

1/25

1/25

1/25

1/25

 

 

 

 

 

 

 

Cured State Properties 1

 

 

 

 

 

 

Hardness

 

Shore D

78

84

84

84

Tensile Shear Strength

ASTM D638

 

 

 

 

 

Aluminum/Aluminum

 

psi

820

1,345

1,520

925

Steel/Steel

 

psi

3,113

3,280

3,080

3,108

90° Peel Strength

 

 

 

 

 

 

Aluminum/Aluminum

 

lbs/inch

10-11

10-11

10-11

10-11

 

 

 

 

 

 

 

1 Determined at 23°C following one week cure at 25 °C.

 

 

Table 3 / Effect of EPON™ Resin 58901 Concentration on Handling and Adhesive Properties of an Epoxy System

 

 

Method

Units

A

B

C

EPON Resin 58901

 

pbw

80

80

---

EPON Resin 828

 

pbw

20

20

100

EPIKURE Curing Agent 3484

 

pbw

24

---

---

Dicyandiamide

 

pbw

---

6

6

Sparmite (Calcium Carbonate)

 

pbw

100

100

100

 

 

 

 

 

 

B-Stage at 325°F, Tack 1

 

 

 

 

 

15 minutes

 

psi

---

Tack 7

Tack 2.5

20 minutes

 

psi

---

Tack 9

Tack 2.5

Cure Schedule

 

hrs/°F

2/200

2/300

1/350

1/350

 

 

 

 

 

 

Cured State Properties

 

 

 

 

 

Hardness

 

Shore D

90

90

90

Tensile Shear Strength

ASTM D638

 

 

 

 

Aluminum/Aluminum

 

psi

2,545

3,035

2,165

Steel/Steel

 

psi

4,550

5,206

5,010

 

 

 

 

 

 

1 Tack tested on flexible aluminum with adhesive applied to both sides, B-staged, then made into a sandwich and fully cured. Tested in 180° T Peel.

 

 

Safety, Storage & Handling

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

 

Please refer to the Hexion web site for Shelf Life and recommended Storage 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.

 

Packaging

Available in bulk and drum quantities.

 

 

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

 

® and ™ Licensed trademarks of Hexion Inc.

DISCLAIMER

The information provided herein was believed by Hexion Inc. (“Hexion”) to be accurate at the time of preparation or prepared from sources believed to be reliable, but it is the responsibility of the user to investigate and understand other pertinent sources of information, to comply with all laws and procedures applicable to the safe handling and use of the product and to determine the suitability of the product for its intended use. All products supplied by Hexion are subject to Hexion’s terms and conditions of sale. HEXION MAKES NO WARRANTY, EXPRESS OR IMPLIED, CONCERNING THE PRODUCT OR THE MERCHANTABILITY OR FITNESS THEREOF FOR ANY PURPOSE OR CONCERNING THE ACCURACY OF ANY INFORMATION PROVIDED BY HEXION, except that the product shall conform to Hexion’s specifications. Nothing contained herein constitutes an offer for the sale of any product.

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