PRODUCT DESCRIPTION

384™ provides the following product characteristics:

Technology：Acrylic

Chemical Type： Modified acrylic

Appearance (uncured) ：White to off-white pasteLMS

Components： One component – requires no mixing

Viscosity： High

Cure ：Activator

Cure Benefit ：Room temperature cure

Application： Bonding

Strength ：Medium

384™ is a thermally conductive adhesive system designed for bonding heat generating components to heat sinks. The high thermal conductivity provides excellent heat dissipation for thermally sensitive components, while the controlled strength permits field and service repair. In high pot applications this product should be limited to a maximum of 500 volts. Typical applications include bonding transformers, transistors and other heat generating electronic components to printed circuit board assemblies or heat sinks.

TYPICAL PROPERTIES OF UNCURED MATERIAL

Specific Gravity@ 25 °C 1.64

Flash Point – See MSDS

Viscosity, Brookfield – HBT, 25 °C, mPa•s (cP):

Spindle TE, speed 2.5 rpm, Helipath 500,000 to 2,250,000LMS

Spindle TE, speed 20 rpm, Helipath 300,000 to 800,000LMS

TYPICAL PROPERTIES OF CURED MATERIAL

Physical Properties:

Coefficient of Thermal Expansion, ISO 11359-2, K-1  69×10-6

Coefficient of Thermal Conductivity, ISO 8302, W/(m•K) 0.757

Elongation, at break, ISO 527-3, % 0.9

Tensile Strength, at break, ISO 527-3 N/mm² 13    (psi) (1,800)

Young’s Modulus N/mm² 2,800  (psi) (400,000)

Electrical Properties:

Volume Resistivity, IEC 60093, Ω•cm 1.3×1012

Surface Resistivity, IEC 60093, Ω 5.1×1013

Dielectric Breakdown Strength, IEC 60243-1, kV/mm 26.7

Dielectric Constant / Dissipation Factor, IEC 60250:

100-Hz 6.48 / 0.1

1-kHz 5.86 / 0.04

1-MHz 5.22 / 0.03

TYPICAL PERFORMANCE OF CURED MATERIAL

Adhesive Properties

Cured for 24 hours @ 22 °C, Activator 7387™ on 1 side

Lap Shear Strength, ISO 4587: Steel N/mm² ≥5.2LMS (psi) (≥754)

TYPICAL ENVIRONMENTAL RESISTANCE

Cured for 72 hours @ 22 °C, Activator 7387™ on 1 side Lap Shear Strength, ISO 4587:Steel

Chemical/Solvent Resistance

Aged under conditions indicated and tested @ 22 °C.

% of initial strength  Environment °C 720 h

Air 87 140

Water 87 75

Freon TF 87 85

Thermal Cycle Resistance

Bonded aluminum to epoxy glass lap shears cured 72 hours using Activator 7387™ on 1 side were subjected to thermal cycling of 15°C to 100°C with a ramp time of 30 minutes. No loss in strength occurred after 1,000 hours of cycle time.

GENERAL INFORMATION

For safe handling information on this product, consult the Material Safety Data Sheet (MSDS).

Directions for use

1. For best performance bond surfaces should be clean and free from grease.

2. Use applicator to apply the activator to the surface to be bonded.

3. After the solvent evaporates, the active ingredients will appear wet, and will remain active for up to 2 hours after application. Contamination of the surface before bonding should be prevented.

4. Apply adhesive to the un activated surface.

5. Secure the assembly, and wait for the adhesive to fixture (approximately 5 minutes) before any further handling. Full cure occurs in 4 – 24 hours.

6. The amount of adhesive applied to the part or heat sink should be limited to the amount necessary to fill the bond and just enough to give a small fillet.

7. The dispensing or application of the adhesive should be done as to minimize air entrapment within the bondline.

Device Removal/Repair

Components or devices bonded with 384™ can be removed while hot using heat from a hot air jet. Bond strength decreases at approximately 65 °C to 93 °C allowing components to be removed with lower shear forces. Method of removal/repair should be specifically determined due to the

variety of components or devices bonding behavior.

Loctite Material SpecificationLMS

LMS dated October-24, 2003. Test reports for each batch are available for the indicated properties. LMS test reports include selected QC test parameters considered appropriate to specifications for customer use. Additionally, comprehensive controls are in place to assure product quality and consistency. Special customer specification requirements may be coordinated through Henkel Quality.

Storage

Store product in the unopened container in a dry location. Storage information may be indicated on the product container labeling. Optimal Storage: 2 °C to 8 °C. Storage below 2 °C or greater than 8 °C can adversely affect product properties. Material removed from containers may be contaminated during use. Do not return product to the original container. Henkel Corporation cannot assume responsibility for product which has been contaminated or stored under conditions other than those previously indicated. If additional information is required, please contact your local Technical Service Center or Customer Service Representative.

华为网盘下载：http://dl.dbank.com/c0no0as0r6

  loctite 384 TDS (60.6 KB, 91 次)