DOWSIL PV-801

Harmonization Code : 8001.20 | Unwrought tin: Tin alloys

DOWSIL PV-801

Main features

  • Non-Slump PV Frame Sealing
  • 746% Elongation for Flexible Sealing
  • Glass and Backsheet Junction-Box Bonding

Product Description

DOWSIL PV-801 Neutral Sealant is a one-part, neutral alkoxy-cure silicone adhesive and sealant for photovoltaic module assembly. The non-slump paste can be extruded at a typical rate of 197 g/min through a 3.18 mm nozzle at 0.62 MPa and skins over in about 10 to 15 minutes at room temperature and 50% relative humidity. After seven days under those conditions, the cured sealant has 746% elongation at break, 1.69 MPa tensile strength, and Shore A 28 hardness. Applications include photovoltaic frame sealing and junction-box bonding to glass and plastic backsheets.

Key features

  • Non-slump application: Paste consistency supports controlled bead placement for module sealing and bonding.
  • High cured elongation: Typical 746% elongation at break provides an elastic cured seal for photovoltaic assemblies.
  • PV assembly fit: Used for module frame sealing and junction-box bonding to glass and plastic backsheets.

Applications / Suitable for

  • Photovoltaic module frame sealing
  • Junction-box bonding to glass
  • Junction-box bonding to plastic backsheets
Product Family

DOWSIL PV-801

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Color
The color
White or bright white
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.51
Physical Properties
Extrusion Rate
210 g/min
Tack-Free Time
55 minutes
Mechanical Properties
Elongation
Elongation is the process of lengthening something. It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks. It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.
556 %
Electrical Properties
Dielectric Strength
Dielectric strength is measured in kV per mm and is calculated by the Breakdown voltage divided by the thickness of the tested material. Those two properties go hand in hand and while Breakdown voltage is always thickness dependent, dielectric strength is a general material property. As an example, the dielectric strength of Polyimide is 236 kV/mm. If we place 1mm of Polyimide between two electrodes, it will act as an insulator until the voltage between the electrodes reaches 236 kV. At this point it will start acting as a good conductor, causing sparks, potential punctures and current flow.
> 19 kV/mm
Volume Resistivity
Volume resistivity, also called volume resistance, bulk resistance or bulk resistivity is a thickness dependent measurement of the resistivity of a material perpendicular to the plane of the surface.
4×10¹⁵ Ohms⋅cm

Additional Information

Technical properties

As-supplied / before-processing properties

Typical handling and application properties before cure.

Property Value Unit Method / condition
Color White or bright white CTM 0176
Consistency Non-slump paste As supplied
Extrusion rate 197 g/min 3.18 mm nozzle at 0.62 MPa; CTM 0364 / ASTM D2452
Skin-over time About 10 to 15 min Room temperature and 50% relative humidity
Technical properties

After-processing / final-state properties

Typical cured properties after 7 days at 23 deg C and 50% relative humidity.

Property Value Unit Method / condition
Specific gravity 1.51 At 23 deg C; CTM 0022 / ASTM D792
Durometer hardness 28 Shore A CTM 0099 / ASTM D2240
Tensile strength 1.69 MPa CTM 0137A / ASTM D412
Elongation at break 746 % CTM 0137A / ASTM D412
Modulus at 100% 0.43 MPa CTM 0137A / ASTM D412
Tear strength, Die B 9.8 kN/m CTM 0159A / ASTM D624
Dielectric strength 13 kV/mm CTM 0114 / ASTM D149
Volume resistivity 2.1 x 10^14 ohm cm CTM 0249 / ASTM D257

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