MS (modified silicon) Adhesive Sealant for Solar PV Industry (Flexibond MS 8510 2C)

PRODUCT DESCRIPTION

Flexibond MS 8510 2C is a sag-resistant, two-component adhesive based on silane modified polymers, which cures to an soft elastic product independent of humidity. The material is free of solvents, isocyanates and silicones. After component A has been thoroughly mixed with component B (MS 8937B) the curing starts independent of humidity to form an elastic material. One hour after mixing the elastic adhesive has got a high green strength. In order to really make use of the advantage of elastic bonding, care should be taken of a sufficient dimensioning of the bonding joint. A minimum thickness is necessary so that the elastic adhesive is able to compensate the movements between the materials to be bonded under the influence of different temperatures during final use of the bonded part.



CHARACTERISTICS

Technology Silane modified polymer

Product Type Sealant

Components Two-component

Cure Cure at ambient temperature (above 5° C) or cure at elevated temperatures

Application Assembly

Appearance Component A: White, grey, black

Component B: White

Consistency Pasty, thixotropic

Odor Characteristic

Mixing Ratio, by weight Part A: Part B 10: 1



TECHNICAL DATA

Component A, density, g/cm³ : approx. 1.5

Component B, density, g/cm³ : approx. 1.3

Component A,

Skin formation time, min*: 10-20

Component B,

Skin formation time, min*: -

Mixture (Component A+B)

Density, g/cm³ : approx. 1.45

Sag resistance: no sagging (DIN profile 15mm)

Pot life, min*: approx. 30

Open time, min: approx. 30

Handling strength, hrs: approx. 2 to 4

Shore-A-hardness

(ISO 868, Durometer A)*: approx. 40

Tensile strength

(acc. To ISO 37), MPa*: approx. 1.4

Elongation at break

(acc. To ISO 37,

Speed 200 mm/min), %: approx. 200

Stress at 100% elongation

(acc. To ISO 37), MPa: approx. 1.0

Tensile shear strength

(acc. To ISO 4587), MPa: > 1.2

Substrates: Al 99.5

Layer thickness, mm: 2

Cross head speed, mm/min: 10

UV resistance: no signif. Changes

UV source: Osram Vitalux 300W, dry UV

Distance to the specimen, cm: 25

Test period, weeks: 6

Reference IEC 61215/61646 clause 10.13:

Damp heat test durability **: given

Test period, hours: 1, 000

Application temperature, ° C: 5 to 40

In service temperature

Range, ° C: -50 to +100

Short exposure (up to 1 h), ° C: 150



* DIN 50014 standard climate: 23° C, 50% relative air humidity

**Damp heat conditions: 85° C, 85% relative air humidity



APPLICATION AREAS

Flexibond MS 8510 2C can be used for elastic bonding and sealing on many materials, such as glass, metal, painted surfaces and plastics. It is used where the cure speed of a conventional one-component adhesive is too slow.

Flexibond MS 8510 2C is used in the Photovoltaic industry.



APPLICATION DIRECTIONS

Pre-Treatment:

The substrates must be clean, dry, oil- and grease free. Depending on the surface it can be necessary to roughen the surface or to use a primer/adhesion promoter to provide best adhesion. Corona or Plasma treatment improves the adhesion to many different materials.



Application:

The material is applied using a hand-controlled applicator pistol or a stationary automatic valve. For more lengthy interruptions (for example overnight breaks) the pressure in the system should be dropped to zero. On request COMENS will provide information on manufacturers of such types processing systems.

Flexibond MS 8510 is metered and fed from hobbocks (pails) or drums, Flexibond MS 8937B is metered from hobbocks using two-component processing equipment and mixed by means of a static mixer. All the equipment including hoses and pipes must be protected from atmospheric humidity.

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Product Categories : Adhesive Sealant