汉高 ccm 胶黏剂 20116310311594

PRODUCT DESCRIPTION

3705 is a UV curable material with optimum viscosity for bonding microelectronic packages such as BGA, etc., therefore render improved reliability for such packages. The thixotropic nature of 3705 reduces the migration of

liquid product after application to substrate. Upon exposure to suitable UV light, the material cures in seconds with no need for post heat cure. The product has shown excellent adhesion to a wide variety of substrates.

TYPICAL APPLICATIONS

3705 is designed for edge bonding microelectronic packages such BGA, CSP etc.

It can also be used for none electronic bonding applications.

PROPERTIES OF UNCURED MATERIAL Typical value UV cure rate is dependent on lamp intensity, distance from light source, depth of cure needed or bond-line gap and light transmittance of the substrate through which the radiation must pass. Appearance Bone-white to beige

translucent past

Odor Mild Specific Gravity @ 25ºC 1.10 - 1.15

Viscosity, 25ºC, mPa.s (cP) Brookfield -HBT, Spindle TB, Helipath, 10 rpm 33000-50000

ADHESIVE CHARACTERISTICS Technology Acrylated Urethance Components Single-component Fluorescence No Curing UV/Visible light activation TYPICAL CURING PERFORMANCE 3705 can be cured by exposure to UV and/or visible light of sufficient intensity. Surface cure is enhanced by exposure to UV light in the 200nm-260nm range. Cure rate and ultimate depth of cure depend on light intensity, spectral distribution of light source, exposure time, etc. Fixture Time UV fixture time is defined as the light exposure time required to develop a shear strength of 0.1 N/mm ². UV fixture time, ISO 4587, glass microslides, Zero gap seconds: 6 mW/cm²@365nm ≤10 TYPICAL PROPERTIES OF CURED MATERIAL

Cured @30 mW/cm²@365nm for 80 seconds using Hg lamp.

Properties Typical

Value

Tensile Strength @ break, ASTM D 882, Nmm ² 10-15

(psi) (1450-2150)

Modulus, ASTM D882 N/mm ² 450-550

(psi) (65000-80000)

Elongation at break, ASTM D 882, % 80-90

GENERAL INFORMATION

This product is not recommended for use in pure oxygen and/or oxygen rich systems and should not be selected as a sealant for chlorine or other strong oxidizing materials.

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

DIRECTIONS FOR USE

This product is light sensitive. Exposure to daylight, UV light and artificial lighting should be kept to a minimum during storage and handling. Product should be dispensed from applicators with black feed-lines. Bond surfaces should be

clean and free from grease.

Cooling should be provided for temperature sensitive substrate such as thermoplastic. Plastic grades should be checked for risk of stress cracking when exposed to liquid adhesive. Excess adhesive can be wiped away with isopropanol solvent. Bonds should be allowed to cool before subjecting to any service loads. For specific shelf-life information, contact your local Technical Service Center. Data Ranges The data contained herein may be reported as a typical value and/or range. Values are based on actual test data and are verified on a periodic basis. Storage Conditions Product shall be ideally stored in a cool, dry location in unopened container at temperatures between 8-28o C (46-82o F) unless otherwise labeled. To prevent contamination of unused product, do not return any material to its original container. Disclaimers This product is experimental only. It is not now and may never be commercially available. This product is not recommended for use in pure oxygen and/or oxygen rich systems and should not be selected for

use with chlorine or other strong oxidizing materials unless otherwise specifically stated. Note The data contained herein are furnished for information only and are believed to be reliable. We cannot assume responsibility for the results obtained by others over whose methods we have no control. It is the user’s responsibility to determine suitability for the user’s purpose of any production methods mentioned herein and to adopt such precautions as may be advisable for the protection of property and of persons against any hazards that may be involved in the handling and use thereof in light of the foregoing, Loctite