231701_TDS.pdf

Property Test MethodValue
Uncured Product
Cure Profile
23+/-2 C and 50+/-5%
humidity
Cure Through to 3 mm Depth 24 hr
Cure Type Alkoxy
Rheology Paste
Self Bonding Yes
Tack Free Time / Skin
Formation at 23 C/73 F
3 min
Cured Product
7 days at 23+/-2 C and 50+/-5% humidity
100% Modulus (N/mm2) 2.1 MPa / 305 psi
Color Black
Density BS ISO 27811.28 g/cm3
Elongation at Break ISO 37 200 %
Hardness Shore A
ASTM D
2240-95
52
Linear Coefficient of Thermal
Expansion (ppm/ C)
230 ppm/ C
Linear Shrinkage (%) 1 %
Max Working Temp 220 C / 428 F
Min Working Temp -50 C / -58 F
Tear Resistance (N/mm) BS ISO 34-119.1 N/mm / 109 ppi
Tensile Strength ISO 37 2.35 N/mm2 / 341 psi
Thermal Conductivity 0.6 W/mK
Volume Coefficient of
Thermal Expansion (ppm/ C)
690 ppm/ C
Youngs Modulus (N/mm2) 1.8 N/mm2 / 261 psi
Electrical Properties
Dielectric Breakdown
(kV/mm)
33.33 kV
Dielectric Constant ASTM D-1502.92
Dielectric Strength (V/mil) >457 V/mil
Dielectric Strength kV/mm ASTM D-149>18 kV/mm / 0 V/mil
Dissipation Factor ASTM D-1500.0012
Volume Resistivity (Ohms
cm)
ASTM D-2577.85E+15 ohms cm
Adhesion Testing
Lap Shear Aluminium kg/cm ASTM D100210.78 kg/cm
Lap Shear Copper kg/cm ASTM D100210.06 kg/cm
Lap Shear Polycarbonate
Steel kg/cm
ASTM D10025.93 kg/cm
Lap Shear Stainless Steel
304 kg/cm
ASTM D10022.98 kg/cm
Storage
Max Storage Temperature 40 C / 104 F
Shelf Life 12 mths
AS1701
1 Part Non-Corrosive Neutral Cure Adhesive Sealant (Electronic Grade)
Description
This is a non-corrosive, neutral cure, 1-part, RTV (Room
Temperature Vulcanising) silicone adhesive sealant. It is one in a
range of Alkoxy cure products which are solvent free. It exhibits
excellent primerless adhesion to many substrates and cures at
room temperature when in contact with atmospheric moisture to
form a tough rubber. This product will not corrode copper or its
alloys and is suitable for use with electronic components.
Key Features
Non corrosive
Excellent adhesion to most substrates
Fast skinning
Non slumping paste
Application
Vibration damping and board coating e.g. voltage regulators
Use and Cure Information
This product is a ready for use 1 Part system. If supplied in
cartridges it can be applied using either manual or pneumatic
dispensing guns. It can also be applied from bulk containers
using conventional drum dispensing equipment.
All surfaces to which the sealant is to be applied should be clean,
dry and free from grease, dirt, and loose material. Priming of
surfaces is not normally required. If using as an adhesive, it
should be applied to one clean surface and the other clean
surface brought into contact with it within the tack free time stated
opposite. For optimum bond strength, the thickness of the sealant
joint should be a minimum of 1 mm.
The sealant will cure upon exposure to atmospheric moisture,
ideally between 20 to 30 C and 40% to 70% Relative Humidity.
Time taken for cure will depend on the thickness of the joint,
humidity and temperature. Joints should be left undisturbed for at
least 24 hours, but preferably longer to effect sufficient depth of
cure. Full cure requires 7 days.
For pneumatic dispensing of 310 ml cartridges, the
recommended pressure is 2.25 to 3.45 bar (40 to 50 psi).
Dispensing pressure above the recommended limits may lead to
gas bypassing the piston, causing spluttering at the nozzle and
poor bead quality
It is important to check the compatibility in premininary tests if
unknown substrates are used.
Health & Safety
Health and Safety
Safety Data Sheets available on request.
Packaging
CHT Adhesives are available in a variety packaging including
cartridges and bulk containers. Please contact our sales
department for more information.
Revision Date 29 Apr 2021
Revision No 1
Download Date 16 Jan 2025
TECHNICAL DATA SHEET
The content set out in the technical data sheet does not contain information upon which you should rely. It is provided for general information purposes only and does not constitute a product
specification. You must obtain professional or specialist advice before taking any action based on the information provided in the technical data sheet.
CHT make reasonable efforts to ensure that information set out in the technical data sheet is complete, accurate, and up-to-date. CHT do not, however, make any representations, warranties or
guarantees (whether express or implied) that information set out in the technical data sheet is complete, accurate, or up-to-date or that the product will be suitable for your requirements. You
should carry out your own testing to determine the applicability of such information and whether the product will be suitable. CHT reserve the right to modify the technical data sheet at any time.
The CHT technical service department is available to offer further information and advice and should it be needed to look at modifying current products or custom formulate a new one to meet
your specific requirements. Please contact the technical service department.
CHT Germany GmbH: Postfach 12 80, 72002 T bingen, Bismarckstra e 102, 72072 T bingen, Germany
Telephone: 07071/154-0, Fax: 07071/154-290, Email: info@cht.com, Homepage: www.cht.com / www.cht-silicones.com