Print Version (PDF) [ close ]   

Technical Data Sheet

 

Re-issued September 2005

 

 

EPON™ Resin 8131

 

 

Product Description

EPON™ Resin 8131 is a flexibilized, 100 percent reactive, low viscosity epoxy resin for use in various concrete patching/resurfacing, reinforced plastics, adhesives and encapsulating applications.

 

 

Sales Specification

Property

Units

Value

Test Method/Standard

Weight per Epoxide

g/eq

245 – 275

ASTM D1652

Viscosity at 25°C

P

11 – 16

ASTM D445

Color

Gardner

5 max.

ASTM D1544

 

 

 

 

 

Typical Properties

Property

Units

Value

Test Method/Standard

Density at 25°C

lb/gal

9.2

ASTM D1475

 

 

 

 

 

 

Processing/How to use

 

General Information

EPON 8131 is a versatile flexibilizing resin which can be used with all classes of epoxy curing agents in both elevated and room temperature cured systems. EPON 8131 will impart stress relieving characteristics to concrete patching and surfacing compounds subjected to thermal cycling. Such binders will contribute good trowelling characteristics to patching and overlay mortars filled with properly graded sand. These mortars are particularly useful for exterior concrete repair and surfacing operations.

 

Other uses for EPON 8131 include flexibilized flooring systems, high burst strength reinforced plastic pipes and pipe fittings, high impact strength tooling compounds, adhesives with improved peel strength and thermal shock resistant electrical encapsulating compounds. EPON 8131 can be blended with EPON 828 to obtain a lower degree of flexibility where desirable.

 

Table 1 illustrates the cured state properties of EPON Resin 8131 when combined with various curing agents.

 

 

Performance Properties

 

Table 1 / Properties of Epoxy Systems Containing EPON Resin 8131

 

Method

Units

A

B

C

D

EPON Resin 8131

 

pbw

63

100

100

100

EPON Resin 828

 

pbw

37

---

---

---

EPIKURE™ Curing Agent 3272

 

pbw

30

26

---

---

EPIKURE Curing Agent 3271

 

pbw

---

---

15

---

Hexahydrophthalic Anhydride

 

pbw

---

---

---

58

EPIKURE Curing Agent 3253

 

pbw

---

---

---

1.5

 

 

 

 

 

 

 

Handling Properties @ 25°C

 

 

 

 

 

 

Viscosity

 

cP

1,600

1,200

960

400

Gel Time, 100 gram mass

 

minutes

48

67

19

---

Peak Exotherm, 100 gram mass

 

°C

102

94

160

---

Peak Exotherm, 100 gram mass

 

°F

216

202

320

---

 

 

 

 

 

 

 

Cure Schedule

 

wks/°C

2/25

2/25

2/25

 

 

 

hrs/°C

 

 

 

2/93 + 2/204

 

 

 

 

 

 

 

Cured State Properties 1

 

 

 

 

 

 

Heat Deflection Temperature

ASTM D648

°C

 

 

 

 

Tensile Strength, ultimate

ASTM D638

psi

5,590

2,390

3,650

7,100

Tensile Elongation

 

%

9

25

30

10

Flexural Strength, ultimate

ASTM D790

psi

9,530

3,060

4,400

13,520

Flexural Modulus, initial

 

ksi

250

70

130

350

Compressive Strength, yield 2

 

psi

8,900

2,100

4,350

---

Izod Impact, notched

ASTM D256

ft.•lb./in.

0.52

0.95

2.6

0.83

Hardness

 

Shore D

81

71

75

82

Weight loss, 24 hrs at 149°C

 

%

---

---

---

0.83

Glass Bow Shrinkage,

(inches divergence from plane surface) 3

 

inch/inch

0.065

0.030

0.011

---

Linear Shrinkage 4

 

inch/inch

0.0031

0.0029

---

---

 

 

 

 

 

 

 

Chemical Resistance

 

 

 

 

 

 

Water absortion, 24 hrs

 

%

0.33

0.66

0.45

0.10

 

 

 

 

 

 

 

Electrical Properties

 

 

 

 

 

 

Dielectric constant 5

ASTM D150

 

3.80

4.12

3.94

3.59

Dissipation factor

 

 

0.015

0.033

0.037

0.013

Volume resistivity

 

 

 

 

 

 

at 25 °C

 

ohm•cm

9.3 x 1014

1.5 x 1013

2.4 x 1014

5.4 x 1015

at 66 °C

 

ohm•cm

2.1 x 1011

5.2 x 109

1.1 x 1010

2.2x 1015

at 93 °C

 

ohm•cm

2.4 x 109

<109

<109

7.8 x 1011

at 130 °C

 

ohm•cm

<109

---

---

1.3 x 1010

at 150 °C

 

ohm•cm

---

---

---

<109

 

 

 

 

 

 

 

1 Determined on 1/8” thick test specimens. Systems A, B and C were cured for 2 weeks at 25 °C. System D was cured for 2 hours at 93 °C followed by 2 hours at 204 °C.

2 Test specimen dimensions – 1/2” right cylinder, 1” height.

3 Corps of Engineers test method measuring the curing stress of a 1/8” thick resin layer bonded to a sheet of picture glass.

4 ERF-12-C1, Mold Size I (195 ml.).

5 Measured at 1 megacycle and 25 °C.


 

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.

 

EPON Resin 8131should be stored in tightly sealed containers, in a dry location at normal room temperature. Some epoxy materials can crystallize during storage. The tendency to do so is affected by storage conditions, composition, and other factors. Should crystallization occur, it may be converted to liquid by opening the drum bung and gently warming to temperatures not to exceed 50 °C (122 °F).

 

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.

Print Version (PDF) [ close ]