Big Dog Adhesives BDSI 4000 Surface Insensitive Cyanoacrylate

Chemical Family: Cyanoacrylates

BDSI 4000 is a surface insensitive cyanoacrylate adhesive used in applications that require faster cure speeds, on parts that are dry, and on parts that are acid base. The SI series bonds a wide range of similar and dissimilar surfaces. The SI Series provides excellent performance in a wide range of applications.

Product families

Ready-to-Use Products — Adhesives & Sealants

Structural Adhesives

Other characteristics

Product Type

Structural Adhesive

Compatible Substrates & Surfaces

Aluminum, Brass, Copper, Elastomers & Rubbers, Fiberglass, Leather, Metal, Plastics, Steel, Wood

Note

* Percent of Strength retained after aging for 500 hours

Color

Transparent

Applications

What Cyanoacrylates Bond :
ABS
Acrylic
Aluminum
Bakelite
Brass
Chloroprene
Chrome

Technology

Ready-to-Use Products

Use Direction

For optimum results, parts should be clean and free from any oils, contamination or loose surfaces (rust). If parts do not mate flush or closely together, you will need to use a product that has higher viscosity to compensate for the gap. Any excess adhesive can be removed with debonder.

Storage Information

Store in unopened containers, out of the direct sunlight, in a dry location, at room temperature (75°F). Refrigeration can extend shelf life.

Chemical Inventories

DSL (Canada)
TSCA (USA)

Certifications and Compliance

ISO 9001

Factors Affecting Cure Speed

Gap: Thin bond lines result in faster cure speed. The larger bond gaps will lengthen cure speed.
Humidity: Cyanoacrylates cure as a function of water content. Higher humidity will cure products faster. Fixture times are normally measured at 50% relative humidity (RH).

Ready to Use Product Features

Chemical Resistant
Gasoline Resistant
Good Solvent Resistance
High Performance
Rapid Curing Speed

Compatible Substrates and Surfaces

Aluminum
Brass
Copper
Elastomers & Rubbers
Fiberglass
Leather
Metal
Plastics

Technical data

Table 1 of 4

3 rows

Characteristic	Value	Method
Dielectric Constant	2 - 3.5	ASTM D150
Dissipation Factor (at 1 kHz)	max. 0.02	—
Volume Resistivity	2 - 10 x 10¹⁵	ASTM D257

Table 2 of 4

6 rows

Characteristic	Value	Unit
Gasoline (at 75°F)*	100	%
Isopropanol (at 75°F)*	100	%
Ethanol (Denatured Alcohol, at 75°F)*	100	%
Freon TA (at 75°F)*	100	%
Motor Oil (at 105°F)*	100	%
Lexan (Polycarbonate, at 105°F, 95% RH)*	100	%

Table 3 of 4