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Neutral Plus (Multi Purpose) Silicone Sealant

Neutral-Plus Silicone Sealant (NP789+)

Main purposes:

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  1. icn1 For weatherproofing sealing nonstructural curtain wall joints, facade joints and system;
  2. icn1 Weather sealing in metal (not including copper), glass, stone, aluminium panel, and plastic;
  3. icn1 Excellent adhesion to most common building material.

Characteristics:

  1. icn1 One-component, neutral-cured with excellent adhesion, weatherability and elasticity for weather sealing in curtainwall and building facades;
  2. icn1 Excellent weatherability and high resistance to ultraviolet radiation, heat and humidity, ozone and temperature extremes;
  3. icn1 With good adhesion and compatibility with most building material;
  4. icn1 Remain flexible over a temperature range of -400C to 1500C.
  5. icn1 Colors available :
  6. c
    c
    c
     

Application:

  1. icn1 Clean with solvents such as toluene or acetone to keep the substrate surfaces completely clean and dry;
  2. icn1 For better appearance cover outside of joint areas with masking taps before application;
  3. icn1 Cut nozzle to desired size and extrudes sealant to joint areas;
  4. icn1 Tool immediately after sealant application and remove masking tape before sealant skins.

Limitations:

  1. icn1 Unsuitable for curtain wall structural adhesive;
  2. Unsuitable for the airproof location, because it is required to absorb moisture in air to cure for the sealant;
  3. icn1 Unsuitable for the frosty or moist surface;
  4. icn1 Unsuitable for the continually soggy place;
  5. icn1 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
The following data are only for reference purpose, not intended for use in preparing specification.

NP789+ ( 4000 ) Silicone Weatherproofing Building Sealant

Performance

Standard

Measured Value

Testing Method

Test at 50±5% RH and temperature 23±20C:

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:

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

Shelf Life

12 months

NP789+ Silicone Weatherproofing Building Sealant is a one-component neutral curing silicone sealant with excellent adhesion, weatherability and elasticity for weather sealing in curtain wall and building facades, especially suits applications in the areas with large difference in temperature and low humidity. It easily extrudes in any weather and quickly cures at room temperature by reaction with moisture in the air to form a durable silicone rubber seal.

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