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Structure Silicone:  

  
 

Sikasil SG-500 CN is a two-part, high-modulus, neutral-curing structural silicone adhesive.

Sikasil SG-500 CN is manufactured in accordance with ISO 9001 quality assurance system and the responsible care program.

 

Product Benefits

 

Meets requirements of ASTM C 1184, ASTM C920 and GB 16776

Broad adhesion range

Resistant to UV and weathering

Long term durability

Quality product based on proven and constant quality raw materials

 

Areas of Application

 

Sikasil SG-500 CN is ideal for structural glazing and similar high-demanding industrial applications.

This product is suitable for professional experienced users only. Tests with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.

 

Cure Mechanism

 

Sikasil SG-500 CN starts to cure immediately after mixing the two components.

The speed of the reaction depends mainly on the temperature, i.e. the higher the temperature the faster the curing process. Heating above 50 C is not advisable as it may lead to bubble formation.

The mixer open time, i.e. the time the material can remain in the mixer without flushing or extrusion of product is significantly shorter than the snap time indicated above. For more information please contact the Technical Ser-vice Department of Sika Industry.

 

Application Limits

 

Most Sikasil WS, FS, SG, IG, WT, AS and other engineering silicone sealants manufactured by Sika are compatible with each other and with SikaGlaze IG sealants. For specific information regarding compatibility between various Sikasil and SikaGlaze products please contact the Technical Service Department of Sika Industry. All other sealants have to be approved by Sika before using them in combination with Sikasil SG-500 CN. Where two or more differ-ent reactive sealants are used, allow the first to cure completely before applying the next.

Sikasil SG, IG and WT sealants and adhesives may only be used in structural glazing or window bonding applications by experienced professionals and after a detailed examination and written approval of the corresponding project details by the Technical Service Department of Sika Industry.

The compatibility of gaskets, backer rods, setting blocks and other accessory materials with Sikasil SG-500 CN must be tested in advance.

The above information is offered for general guidance only. Advice on specific applications will be given on request.

 

Method of Application

 

Surface preparation

 

Surfaces must be clean, dry and free from oil, grease and dust.

Advice on specific applications and surface pre-treatment methods is available from the Technical Service Department of Sika Industry.

 

Application

 

Before processing Sikasil SG-500 CN both components have to be mixed homogeneously and air-bubble-free in the correct ratio as indicated with an accuracy of ±10%. Most commercially available metering and mixing equipments are suitable. Please contact the System Engineering of Sika Industry for specific advice.

While the A-part of Sikasil SG-500 CN is stable in air, the B-part is moisture-sensitive and must only be exposed briefly to air.

Joints must be properly dimensioned as changes are no longer possible after construction. Basis for calculation of the necessary joint dimensions are the technical values of the adhesive and the adjacent building materials, the exposure of the building elements, their construction and size as well as external loads. For more information please contact the Technical Service Department of Sika Industry.

 

Tooling and finishing

 

Tooling and finishing must be carried out within the snap time of the adhesive. No tooling agents must be used.

 

Removal

 

Uncured Sikasil SG-500 CN may be removed from tools and equipment with Sika Remover-208 or another suitable solvent. The static mixer of the metering and mixing equipment can be cleaned with Sikasil Mixer Cleaner.

Hands and exposed skin should be washed immediately using Sika Handclean Towel or a suitable industrial hand cleaner and water. Do not use solvents!

 

Overpainting

 

Sikasil SG-500 CN is an elastic adhesive and cannot be overpainted.

 

Further Information

 

Copies of the following publications are available on request:

Material Safety Data Sheets

General Guidelines Structural Silicone Glazing with Sikasil Adhesives

 

Packaging Information

 

Drum (comp. A)

260 kg

Pail (comp. B)

20 kg

 

Value Bases

 

All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control.

Health and Safety Information

For information and advice regarding transportation, handling, storage and disposal of chemical products, users shall refer to the actual Material Safety Data Sheets containing physical, ecological, toxicological and other safety-related data.
  

Technical Product Data

 

Properties

 

Component A

Sikasil SG-500 CN A

Component B

Sikasil SG-500 CN B

Chemical base

2-C silicone

Colour (CQP1 001-1)

Colour mixed

White

Black

Black

Cure mechanism

Polycondensation

Cure type

Neutral

Density (CQP 006-4)

Density mixed

1.4 kg/l approx.

1.08 kg/l approx.

1.38 kg/l approx.

Mixing ratio

A:B by volume

A:B by weight

 

10:1

13:1

Viscosity (CQP 029-6)

1200 Pa·s approx.

300 Pa·s approx.

Consistency

Paste

Application temperature

5 - 40 C

Snap time2 (CQP 554-1)

60 min approx.

Tack-free time2 (CQP 019-1)

270 min approx.

Shore A-hardness (CQP 023-1 / ISO 868)

40 approx.

Tensile strength (CQP 036-1 / ISO 37)

2.0 N/mm2 approx.

Elongation at break (CQP 036-1 / ISO 37)

350% approx.

Tear propagation resistance (CQP 045-1 / ISO 34)

4 N/mm approx.

100% modulus (CQP 036-1 / ISO 37)

1.0 N/mm2 approx.

12.5% modulus (CQP 036-1 / ISO 37)

0.2 N/mm2 approx.

Movement accommodation capability (ASTM C 719)

±12.5%

Thermal resistance (CQP 513-1)

Short term

4 hours

1 hour

 

 

200 C approx.

220 C approx.

Service temperature

-40 - 150 C approx.

Shelf life (storage below 25 C) (CQP 016-1)

15 months

12 months

 

1)CQP = Corporate Quality Procedure 2) 23 C (73 F) / 50% r.h.   
 

 

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