Tonsan® 1527 Black is a high-quality, one-component sealant based on silicone polymer. It cures by a chemical reaction with moisture to an elastic product. This material is recommended for sealing the side frames of solar cells and for sealing the solar energy lamps. cell, sealing or adhering the junction boxes of solar,

RTU Product Type: 1K (1 component) Sealant, Encapsulant

Application Area: Blades, Edge Gluing, Energy Storage, Frame Sealing, HVAC Applications, Ingot Bonding, Junction Boxes, Lithium-Ion Battery, Module Installation, PV Module Frame Sealing, Rail Bonding, Solar Cell, Turbines

Compatible Substrates & Surfaces: Aluminum, Glass, Metal

Chemical Family: Silicones

Features: Excellent Damp-Freezing Performance , Excellent Damp-Heat Performance , Excellent Dielectric Properties, Excellent Thermal Cycling Performance, Exceptional UV Resistance, Flame Retardant, Good Sagging Resistance, Good Thermal Stability, Good Weather Fastness, UL Listed, UV Resistant

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Markets
Applications
Application Area
Compatible Substrates & Surfaces
Cure Method
Application Instructions
  • For best result, clean and dry all surface to be sealed.
  • Apply a continuous and even bead of silicone to one surface.
  • Assemble parts. Remove excess with knife.
Curing Profile

Recommended cure: Curing depth is 2mm at 21 - 25°C, 45 - 55% RH for 24h

Properties

Color (Properties)
Physical Form
Appearance
Black paste
Typical Properties
ValueUnitsTest Method / Conditions
Curing Temperature (at 45 - 55 %RH, 24 hr)21 - 25°C-
Cured Mechanical Properties
ValueUnitsTest Method / Conditions
Adhesion Strength (Measured on cured sheets ~2mm, Cured at 21 - 25°C, 45 - 55 % RH for 14 days, tested at 21 - 25°C)1.8MPaGB/T 7124
Adhesion Strength (Measured on cured sheets ~2mm, Cured at 21 - 25°C, 45 - 55 % RH for 14 days, tested at 21 - 25°C)1.8MPaISO 4587
Tensile Strength (Measured on cured sheets ~2mm, Cured at 21 - 25°C, 45 - 55 % RH for 14 days, tested at 21 - 25°C)2.3MPaGB/T 528, ISO 37
Elongation at Break (measured on cured sheets ~2mm, Cured at 21 - 25°C, 45 - 55 % RH for 14 days, tested at 21 - 25°C)300%GB/T 528, ISO 37
Hardness (measured on cured sheets ~2mm, Cured at 21 - 25°C, 45 - 55 % RH for 14 days, tested at 21 - 25°C)48Shore AGB/T 531, ISO 7619
Electrical Properties
ValueUnitsTest Method / Conditions
Dielectric Strength20kV/mmGB/T 1695, IEC 60243-1
Volume Resistivity1.0 x 10¹⁵Ω-cmGB/T 1692, IEC 60093
Cured Properties
ValueUnitsTest Method / Conditions
Operational Temperature* (cured at 21 - 25°C, 45 - 55 % RH)- 54 to 210°CGB/T 5208, ISO 3679
Curing Depth (at 21 - 25°C, 45 - 55%RH, 24 hr)2mm-
Curing Rate (at 21 - 25°C, cured fixture/full, 45 - 55% RH, 24h, Test method issued date 2008)6g/m²/hGB/T 5208
Curing Rate (at 21 - 25°C, cured fixture/full, 45 - 55% RH, 24h)6g/m²/hISO 3679
Flash Point (cured at 21 - 25°C, 45 - 55 % RH, Test method issued date 2008)min. 93°CGB/T 5208
Flash Point (cured at 21 - 25°C, 45 - 55 % RH)min. 93°CISO 3679
Technical Data
ValueUnitsTest Method / Conditions
ViscosityWhite paste--
Density1.37g/cm³-
Extrusion Rate10 - 20s/20g-
Work Life5 - 15m-
Damp Heat Aging Test Properties
ValueUnitsTest Method / Conditions
Tensile Strength (at 85°C, 85% RH, 1000h)1.6MPaGB/T 528, ISO 37
Elongation at Break (at 85°C, 85% RH, 1000h)320%GB/T 528, ISO 37
Note

* - Cure speed will vary with temperature, relative humidity, depth of material and presence of moisture.

** - Measured on cured sheets approx. 2mm. Cured at 21 - 25°C, 45 - 55% RH for 14 days, tested at 21 - 25°C.

Packaging & Availability

Country Availability
Regional Availability
  • Asia Pacific
  • Europe
  • India/MiddleEast/Africa (IMEA)
  • North America
Packaging Information
  • 310ml
  • 400ml
  • 600ml
  • 235kg

Storage & Handling

Shelf Life
12 months
Storage Condition

Product shall be ideally stored in a cool, dry area in unopened containers at room temperature.

Disposal Advice
  • Allow adequate ventilation when using.
  • Avoid prolonged skin contact.
  • In case of eye contact, flush with water and seek medical attention.
  • This product is not recommended for use in pure oxygen and/or oxygen rich systems and should not be selected as a sealant for chlorine or other strong oxidizing materials.