Print Version (PDF) [ close ]   

Technical Data Sheet

 

Re-issued September 2007

 

HELOXY™ Modifier 67

 

Product Description

HELOXY™ Modifier 67 is a commercial grade, diglycidyl ether of 1,4-butanediol and is primarily used as a reactive diluent or viscosity reducer for all classes of epoxy resins.

 

Application Areas/Suggested Uses

  • To improve air release and wetting characteristics in electrical, potting, encapsulation, and impregnation applications
  • To maintain high reactivity yet provide workable viscosity at room temperature when using novolac or other high functionality epoxy resins
  • As a thermosetting resin in textile and paper applications

 

Benefits

  • Reduces viscosity while maintaining most cured state properties
  • Improves wetting characteristics
  • Facilitates air release
  • Provides solubility in ethanol/water solutions

 

Sales Specification

Property

Units

Value

Test Method/Standard

Weight per Epoxide

g/eq

124-137

ASTM D1652

Viscosity at 25°C

mPa s1

10-20

ISO 12058-1

Color

Gardner

1

ASTM D1544

 

 

 

 

1 Höppler Falling Ball  (1 mPa×s = 1 cP)

 

Typical Properties

Property

Units

Value

Test Method/Standard

Density

lbs/gal

9.10-9.30

ASTM D1475

Flash Point, Setaflash

°F

>200

ASTM D3278

 

 

 

 

 

 

General Information

HELOXY 67 is compatible with bisphenol based epoxy resins, peroxidized olefins, and higher functionality epoxy resins. Concentrations of up to 40 percent of HELOXY 67 have been employed for viscosity reduction. Performance properties of systems containing this resin are maintained at higher modification concentrations than is possible with monoepoxide diluents.

 

Effect of HELOXY 67 modifications on the properties of various EPON™ Resin 828 based systems is demonstrated by data presented in Table 1. Substituting HELOXY 67 for Epon 828 or other unmodified resins generally results in slight increases in flexibility. As with all diluting modifiers, use of HELOXY 67 decreases chemical resistance and elevated temperature performance.

 

To minimize such losses, the lowest concentration of HELOXY 67 necessary to obtain desired reduction in viscosity should be used. The viscosity reduction efficiency of HELOXY 67 when blended with Epon 828 is compared to that of other HELOXY modifiers by data illustrated in Figure 1.

 

When formulating with HELOXY 67, the concentration of curing agent to be used will likely be different than in the case of an unmodified system. The proper curing agent combining ratio should always be calculated in order to ensure proper stoichiometric balance.

 

Figure 1 / Viscosity Dilution Effectiveness of HELOXY Modifiers

Heloxy 67 Graph 1

 

Performance Properties

 

Table 1 / Effects of HELOXY Modifier 67 on Properties of Epoxy Resin Systems

 

 

 

 

Aliphatic Amine

Anhydride

 

Method

Units

A

B

C

D

Composition (parts by wt)

 

 

 

 

 

 

EPON™ Resin 828

 

pbw

100

85

100

85

HELOXY Modifer 67

 

pbw

---

15

---

15

EPIKURE Curing Agent 3234

 

pbw

12.9

14

---

---

Methyltetrahydrophthalic Anhydride

 

pbw

---

---

79

84

Diethylaminoethanol

 

pbw

---

---

0.5

0.5

 

 

 

 

 

 

 

Handling Properties at 25°C

 

 

 

 

 

 

Viscosity, Resin Portion

 

cP

13,250

1,560

13,250

1,560

Gel time

 

 

40

45

10

45

at 23 °C, 100 g

 

minutes

44

39

---

---

at 150 °C, stroke method

 

minutes

---

---

5.2

5.7

Peak Exotherm, 100 gram mass @ 23°C

 

°C

223

222

---

---

 

 

 

 

 

 

 

Cured State Properties 1

 

 

 

 

 

 

Heat Deflection Temperature

ASTM D648

°C

67

64

117

101

Tensile strength Ultimate

ASTM D638

psi

9,600

12,400

13,500

12,900

Tensile elongation at Break

 

%

1.7

4.2

6.3

6.3

Tensile Modulus

 

106 psi

0.59

0.53

0.51

0.50

Flexural Strength Ultimate

ASTM D790

psi

16,700

19,000

21,900

20,900

Initial Flexural Modulus

 

106 psi

0.57

0.53

0.48

0.49

Compressive Strength Ultimate

 

psi

19,100

12,000

46,000

51,000

Compressive Yield Strength

 

psi

10,100

9,900

16,500

16,000

Izod Impact – notch

ASTM D256

ft.•lb./inch

0.40

0.52

0.43

0.63

Weight Loss after 24 hrs @ 150°C

 

%

0.29

0.28

0.04

0.08

Percent Absorption2

 

 

 

 

 

 

In Water

 

 

 

 

 

 

24 hrs

 

%

0.17

0.21

0.14

0.13

1 week

 

%

0.46

0.58

0.34

0.33

In 5% Acetic Acid

 

 

 

 

 

 

24 hrs

 

%

1.53

4.64

0.13

0.13

1 week

 

%

4.83

10.80

0.34

0.32

In Solvent 3

 

 

 

 

 

 

24 hrs

 

%

0.88

1.44

0.04

0.04

1 week

 

%

1.97

2.38

0.09

0.12

Electrical Properties

 

 

 

 

 

 

Dielectric Constant 5

ASTM D150

 

4.26

4.43

3.61

3.68

Dissipation Factor 5

 

 

0.022

0.026

0.014

0.015

1 Determined on 0.125 thick specimens at 23 °C. Systems A and B cured 2 weeks at 25 °C. Systems C and D cured 2 hours at 93 °C plus 2 hours at 175°C.

2 Weight gain of 3 inch x 1 inch x 0.125 inch specimens totally immersed in reagent at 25 °C.

3 50:50 by weight mix of isopropanol and xylene.

4 Determined at 106 hertz


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.

 

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 ]