
Neutral-Plus Silicone Sealant (NP789+)
Main purposes:



For weatherproofing sealing nonstructural curtain wall joints, facade joints and system;
Weather sealing in metal (not including copper), glass, stone, aluminium panel, and plastic;
Excellent adhesion to most common building material.
Characteristics:
One-component, neutral-cured with excellent adhesion, weatherability and elasticity for weather sealing in curtainwall and building facades;
Excellent weatherability and high resistance to ultraviolet radiation, heat and humidity, ozone and temperature extremes;
With good adhesion and compatibility with most building material;
Remain flexible over a temperature range of -400C to 1500C.
Colors available :
-
ccc
Application:
Clean with solvents such as toluene or acetone to keep the substrate surfaces completely clean and dry;
For better appearance cover outside of joint areas with masking taps before application;
Cut nozzle to desired size and extrudes sealant to joint areas;
Tool immediately after sealant application and remove masking tape before sealant skins.
Limitations:
Unsuitable for curtain wall structural adhesive;
- Unsuitable for the airproof location, because it is required to absorb moisture in air to cure for the sealant;
Unsuitable for the frosty or moist surface;
Unsuitable for the continually soggy place;
Can’t be used if the temperature is below 4°C or above 50°C on the surface of the material.
Shelf life: 12 months if keep sealing, and stored below 270C in cool, dry place after the date of production.
Standard: GB/T 14683-I-F-20HM
Volume: 300ml
Properties |
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NP789+ ( 4000 ) Silicone Weatherproofing Building Sealant |
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Performance |
Standard |
Measured Value |
Testing Method |
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Test at 50±5% RH and temperature 23±20C: |
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Density (g/cm3) |
±0.1 |
1.52 |
GB/T 13477 |
|||
Skin-Free Time (min) |
≤180 |
20 |
GB/T 13477 |
|||
Extrusion g/10S |
/ |
12 |
GB/T 13477 |
|||
Tensile Modulus (Mpa) |
230C |
?0.4 |
0.65 |
GB/T 13477 |
||
-200C |
or ?0.6 |
/ |
||||
105? weight loss, 24hr % |
/ |
6.5 |
GB/T 13477 |
|||
Slumpability (mm) vertical |
≤3 |
0 |
GB/T 13477 |
|||
Slumpability (mm) horizontal |
not change shape |
not change shape |
GB/T 13477 |
|||
Curing Speed (mm/d) |
2 |
2.8 |
/ |
|||
As Cured -After 21 days at 50±5% RH and temperature 23±20C: |
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Hardness (Shore A) |
20~60 |
45 |
GB/T 531 |
|||
Tensile Strength under Standard Conditions (Mpa) |
/ |
0.65 |
GB/T 13477 |
|||
Elongation of Rupture (%) |
/ |
200 |
GB/T 13477 |
|||
Movement Capability (%) |
12.5 |
20 |
GB/T 13477 |
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Shelf Life |
12 months |