EPOXY RESIN ENCAPSULATING COMPOUND FOR MICRO ELECTRONIC CIRCUIT ELEMENTS AND MICRO-MODULE APPLICATIONS
The 4580 is an epoxy resin encapsulating compound without solvents, reactive diluents or other degrading adulterants. The mineral filler system, permanently suspended by intrinsic dispersion, does not settle, either during storage or during cure. Physical and electrical properties are thereby uniform throughout the entire cured mass.
The 4580, when fully cured, exhibits excellent chemical resistance (conventional chemical epoxy resin strippers will not attack the 4580), good mechanical strength and machinability.
The 4580, used as a general purpose encapsulating compound, has gained recognition and acceptance as a reliable standard for diverse applications. The availability of four low viscosity curing agents provides a variety of working lives and curing schedules. Minimal shrinkage, coupled with maximum physical and electrical properties, make the 4580 especially well suited to the stringent requirements of high-density circuit packages, miniaturized component assemblies, circuit elements, and micro-module encapsulations.
OUTSTANDING FEATURES OF PROTAVIC 4580 SERIES WITH:
| PROTAVIC HARDENER 6 | Low viscosity; linear shrinkage; low exo- therm; short heat cure for maximum properties |
| PROTAVIC HARDENER 12 | Moderate viscosity; high compressive strength; room temperature cure. |
| PROTAVIC HARDENER 14 | Low viscosity and exotherm; long working life; short heat cure to maximum properties. |
| PROTAVIC HARDENER 19 | Lowest viscosity hardener system; high impact strength; high heat distortion temperature; heat cure required. |
PROCEDURE FOR USING PROTAVIC 4580 SERIES
1. Measure 100 parts of any PROTAVIC 4580 SERIES compound. To aid penetration into extremely tight voids or coil windings, preheat the resin before mixing.
2. Measure the proper parts of PROTAVIC HARDENER (see Table I).
3. Thoroughly mix the curing agent into the PROTAVIC 4580 SERIES compound. Mechanical mixing is preferable to hand mixing.
4. Deaerate and pour at room temperature.
5. Suggested curing schedules are listed in Table II. Other cure schedules are applicable within the range of properties required. Post-curing for maximum physical and electrical properties is recommended.
TABLE I – CURING AGENT MIXING DATA
PROTAVIC HARDENER
| Parts HARDENER for 100 parts | 6 | 12 | 14 | 19 |
| PROTAVIC 4580 SERIES compound | ||||
| By weight | 8.3 | 8 | 5 | 10 |
| By volume | 12.9 | 11.8 | 8.4 | 15.1 |
| Viscosity (25°C), cP | 10,500 | 12,500 | 9,500 | 5,000 |
| Pot Life (25°C), minutes | 80 | 65 | 210 | 65 |
| Gel Time (25°C), minutes | 110 | 75 | 300 | 165 |
| Peak Exotherm (100g at 25°C), °C | 81 | 114 | 82 | 88 |
TABLE II – RECOMMENDED CURING SCHEDULES
| PROTAVIC HARDENER | CURE SCHEDULE | POST-CURE |
| 6 | Room temperature, gel plus 2 hr. at 150°F, or 30 min. at 240°F |
2 hr. at 150°F or 90 min. at 180°F |
| 12 | Room temperature (maximum properties attained in 4 days) | Optional: 30 min. at 240°F, or 3 hr. at 180°F |
| 14 | 1 hr. at 180°F, or 90 min. at 145°F | Optional: 1 hr. at 180°F |
| 19 | Room temperature gel plus 2 hr. at 150°F | 2 hr. at 150°F |
TABLE III – TYPICAL PROPERTIES OF FULLY CURED PROTAVIC 4580 SERIES*
| PROPERTY | TEST METHOD | PROPERTY VALUE HARDENER | |||
| 6 | 12 | 14 | 19 | ||
| Physical | |||||
| Shrinkage, linear | Protavic | 0.006 | 0.007 | 0.005 | 0.009 |
| Density, lbs. in-3 | D792 | 0.048 | 0.05 | 0.047 | 0.047 |
| Specific Gravity (25°/25°C) | 792 | 1.35 | 1.37 | 1.3 | 1.31 |
| Tensile Strength, psi | 638 | 9,000 | 9,400 | 9,400 | 11,600 |
| Compressive Strength, psi | D695 | 17,000 | 12,000 | 20,000 | 18,450 |
| Flexural Strength, psi | 790 | 15,000 | 8,000 | 17,000 | 17,500 |
| Impact Resistance (Izod), ft-lbs. inch-1 notch | 256 | 0.28 | 0.42 | 0.53 | 0.68 |
| Hardness, Rockwell | D785 | M-106 | M-105 | M-110 | M-105 |
| Thermal | |||||
| Expansion Coefficient, °C-1 | D696 | 29 x 10-6 | 31 x 10-6 | 29 x 10-6 | 29 x 10-6 |
| Thermal Conductivity, cal.sec-1.cm-1.°C-1 | C-177 | 13.9 x 10-4 | 13.7 x 10-4 | 13.4 x 10-4 | 13.2 x 10-4 |
| Operating Temperature Range, °C | Protavic | -55 to 125 | -55 to 125 | -55 to 125 | -55 to 125 |
| Thermal Shock Resistance | MIL-I-16923C | passes | passes | passes | passes |
| Deflection Temperature (264 psi), °C | 648 | 102 | 110 | 104 | 105 |
| Electrical | |||||
| Dielectric Strength, V.mil-1 | D149 | 405 | 380 | 420 | 360 |
| Volume Resistivity, ohm.cm | 257 | ||||
| 25°C | 3 x 1016 | 8 x 1016 | 9 x 1016 | 8 x 1015 | |
| 100°C | 8 x 1010 | 7 x 1012 | 6 x 1013 | 5 x 109 | |
| Dielectric Constant (103 Hz) | 150 | 4.3 | 4.2 | 4.1 | 4.1 |
| Dissipation Factor (103 Hz) | 150 | 0.016 | 0.018 | 0.018 | 0.018 |
*Values listed are for Standard ASTM test procedures unless otherwise designated. Properties listed are typical and are not intended as specifications.
TABLE IV – Typical Properties of Uncured Protavic 4583 and Curing Agents*
| PROPERTY | PROTAVIC 4583 BASE | 6 | 12 | 14 | 16 |
| Color | Black | Amber | Amber | Colorless | Colorless |
| Form | Syrup | Liquid | Liquid | Liquid | Liquid |
| Specific Gravity, (25°C/25°C) | 1.4 | 0.9 | 0.95 | 0.83 | 0.93 |
| Viscosity (25°C), cP | 45,000 | 35 | 60 | 10 | 15 |
| Flash Point, °F | 390 | 145 | 360 | 145 | 145 |
*Properties listed are typical only and are intended as specifications
STORAGE
PROTAVIC HARDENER 6, 12, 14 and 19 are amines. They are hygroscopic, absorbing moisture which increases viscosity and reactivity. They are also basic, absorbing carbon dioxide which destroys the reactive amine groups. PROTAVIC HARDENER 6, 14 and 19 are combustible liquids with a flash point of 145°F. Store inside in a cool, dry, well ventilated area and away from sources of ignition.
PROTAVIC 4580 SERIES are epoxy resins. The products are uniform liquids when packaged, but frequently crystallize at room temperature because the pure diglycidyl ether of bisphenol-A has a melting point of 42°C.
Crystallization is induced by cold temperatures or seeding by ordinary dust particles. The product is restored to the liquid state by application of low heat (50° to 60°C) and stirring.
Store all products inside and in a cool, dry, well ventilated area. When kept tightly closed in the original containers at temperatures from 50° to 90°F, the warranted shelf-life is 6 months.
HANDLING PRECAUTIONS
Consult Material Safety Data Sheet before handling. Keep containers closed when not in use. Check uniformity of contents before using. These products are chemicals. Observe good industrial hygiene practices. Avoid breathing vapors. Irritation may result from repeated skin contact. Prevent eye contact. Effective ventilation, goggles and protective clothing are recommended for personnel. In case of accidental skin contact, wash the affected area with soap and water. In case of eye contact, flush eyes thoroughly with water and consult a physician. Contaminated clothing should be promptly removed and not worn until thoroughly cleaned. Discard contaminated leather. Wash thoroughly after handling and before eating, drinking, smoking or using the toilet.
PROTAVIC HARDENER 6, 12, 14 and 19 are liquids with a mildly ammoniacal odor and corrosive properties somewhat like ammonia. Contact with skin, eyes and mucosae causes burns. Avoid contact and breathing of vapors which might cause sensitization. Keep PROTAVIC HARDENER 6, 14 and 19 away from sources of ignition.
PROTAVIC 4580 SERIES are combustible liquids (OSHA IIIB) having a mild odor. Contact with skin, eyes and mucosae causes irritation and may cause sensitization and dermatitis. Avoid contact. Do not inhale. Avoid heat, sparks or flame.
All products are for industrial use only.
AVAILABILITY AND ORDER INFORMATION
A. PACKAGING
These PROTAVIC products are available as two-component kits consisting of separate containers of epoxy resin and curing agent. Standard packaging is in half-pint, pint, quart, gallon, five gallon and 55 gallon containers. Other kit sizes are available on special order.
B. COLOR
Black (PROTAVIC 4583) is the standard color. PROTAVIC 4580 SERIES is available in a range of colors as listed below. Special colors can be supplied to customer specifications.
| Product | Color | Product | Color | Product | Color |
| 4580 | Tan | 4583 | Black | 4586 | Blue |
| 4581 | Yellow | 4584 | Red | 4587 | Green |
| 4582 | Brown | 4585 | Orange | 4588 | White |
| 4589 | Gray |
C. ORDERING
Specify the name, number, color, quantity and container size. Orders may be placed with your PROTAVIC area factory representative. Minimum order size is one hundred dollars. Evaluation kits are available on request.
AUXILIARIES
Clean hands with waterless METATERGE 1421.
Clean uncured PROTAVIC resins from utensils and equipment with formulated METATERGE 1405 (not flammable or corrosive; water soluble).
For vigorous stripping of stubborn, cured resins, use METASTRIP 705. It is a highly active corrosive solvent.
For mold release, use our METAPART 7521 or METAPART 7582.
For air release, use PROTAVIC XLN-760 (non-silicone).
RELATED PROTAVIC LITERATURE
Resin Selector Guide
Product Information Bulletins
METATERGE 1405. – Uncured epoxy remover
METATERGE 1421. – Power hand cleaner
META-STRIP DP-705. – Energetic stripper
METAPART 7521. – Epoxy and urethane mold release
METAPART 7582. – Fluorocarbon mold release agent
PROTAVIC XLN-760. – Air release
PROTAVIC offers a broad line of silicones and epoxies for coatings, encapsulating, potting, sealing and adhering. Call or write to request information on your needs and help with your problems.
Technical information and recommendations made by Protavic America, Inc. concerning products and uses or applications hereof, are based on reliable laboratory tests and are believed to be accurate. No warranty, however, is expressed or implied, or is any warranty expressed or implied as to results to be obtained from use of said materials, whether used singly or in combination with other products. No statements made are to be construed as constituting a license under any existing patent.