Teroson MS 939 is a gun-grade, one-component sealant based on silane modified polymers, which cures by reaction with moisture to an elastic product.
Characteristics
- The skin formation and curing times are dependent on humidity and temperature
- By increasing the temperature and moisture these times can be reduced
- Particularly sag-resistant
- High position tack after matching of the parts to be bonded
- Free of solvents, isocyanates, silicones and PVC
- Good adhesion to many substrates
- Compatible with suitable paint systems
- Good UV resistance
- Demonstrates the strength necessary for elastic bonding
- This property of the product also remains at the temperatures in repair ovens (max. 100°C)
Teroson MS 939 allows accelerated curing as two-component material.
Application
Teroson MS 937 is used for the following applications :
- elastic bonding of metals and plastics, e.g. side panelling
- bonding of the roof skin in the vehicle and caravan manufacture
Elastic, interior and/or exterior seam and joint sealing in the following areas:
- vehicle body, caravan, railway carriage, container and general metal construction; the electrical, plastics, air- conditioning and ventilation industries
Technical characteristics
- Colour : white
- Odour : characteristic
- Consistancy : thixotropic paste
- Density : approx. 1,5 g/cm³
- Sag resistance : no sagging (DIN profile 15 mm)
- Skin formation time : approx. 10 min*
- Cure rate : approx. 3 mm/24 h*
- Shore-A-hardness (DIN 53505): approx. 55
- Tensile strength (ISO 37) : approx. 3,0 MPa
- Elongation at break (ISO 37, speed 200 mm/min) : approx. 250%
- Stress at 100 % elongation (ISO 37) : approx. 1,6 MPa
- Volume change ( DIN 52451) : < 2%
- Paint compatibility : in principle compatible
- UV resistance : no signif. changes
UV source : Osram Vitalux 300 W
Distance to the specimen : 25 cm
Test period : 6 weeks
- QUV resistance : no signif. change
QUV source : Test Weather-O-Meter acc. to DIN 53384-A
Test period : 6 weeks
Reference IEC 61215/61646 clause 10.13 :
Damp heat test durability ** : given
Test period : 1 000 h
- Application temperature : +5°C to +40°C
- In service temperature range : -40°C to 100°C
- Short exposure (up to 1 h) : +120°C
* DIN 50014 standard climate : 23°C, 50% relative air humidity
** Damp heat conditions : 85°C, 85% relative air humidity
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