Epoxy adhesives – high strength

We deal with developing and producing constructional epoxide-based glues for high-strength applications as they require such a type of glues with high strength and good resistance of glued joints. Thanks to our own laboratory equipped with necessary technology to test glues, we are able to offer our clients the possibility of developing a glue exactly in compliance with their exact specifications and requests.

We produce high-strength epoxide glues in two basic variants, i.e. foil epoxy adhesives or liquid epoxy adhesives. A great advantage of foil epoxide glues consists of their easy application (they can be formatted as fabrics, for example) and no dangerous evaporations harmful to operators, produced at manipulating with or applying them.

The glues LETOXIT® KFL (foil one) and LETOXIT® PL (liquid one) are commonly used in gluing metallic structures and parts (mainly of aluminium or stainless steel) involving high demands placed on strength of joints, thermal resistance and long-term stability. These glues are principally suitable for applications in the automotive or aerospace industries.

Epoxy foil adhesives

Product range LETOXIT® KFL covers epoxy foil adhesives with different characteristics suitable mainly for bonding of aluminium sandwich constructions including honeycomb structures. Application of film epoxy adhesives guaranties equal distribution and optimum thickness of adhesive layer.

The adhesive is one-component, based on modified epoxy resins, and contains suitable curing system. We are producing foil in thickness 0,25 – 0,3 mm on 250 mm or 1000 mm width rolls. Bonded joints exhibit very good mechanical properties when loaded under temperatures ranging from –75°C to +100°C. During working with adhesive or curing adhesive doesn´t release any hazard vapours.

ADVANTAGES

  • Excellent mechanical properties (can be used in primary constructions of airplanes)
  • High shear and tensile strength
  • High toughness
  • Foil adhesives do not irritate human skin and do not contain solvents
  • Foil adhesives guarantee an even layer of adhesive on the entire bonded area

APPLICATION

  • Aviation
  • Car industry
  • Mechanical engineering
  • Space industry
  • Sport equipment
Table foil adhesives
Adhesive LETOXIT Shear strength (Mpa) Peel strength (N/mm) Tg (°C) Max. temp. resistance  (°C) Curing
(°C) (min)
Characteristics Techn. sheet
KFL 120 36 – 41 4 – 7 102 160 120 60 extra high strength joints in aviation  TL KFL 120 en
KFL 125 29 – 34 3,5 – 6 102 160 120 60 net carrier  TL KFL 125 en
KFL 130 36 – 41 4 – 7 105 160 120
(100)
20
(60)
fast curing  TL KFL 130 en
KFL 131 29 – 34 2 – 4 105 160 120
(100)
20
(60)
fast curing, net carrier  TL KFL 131 en
KFL 156 29 – 34 2 – 4 100 160 120
(100)
20
(60)
gluing of stainless steel  TL KFL 156 en
KFL 162 30 – 34 2,5 – 4,5 102 160 120
(100)
20
(60)
extra light adhesive (thin layer)  TL KFL 162 EN

Package of Letoxit KFL adhesives:

  • roll width 1000 mm
  • 50 m per roll
  • minimal order 1 roll

Epoxy paste adhesives

Two-component, high-strength, paste epoxy-based adhesive curing at room temperature. It is designed to adhesive bond a variety of metallic materials, honeycombs, fiber-reinforced composites, wood, rubber and glass. Such materials can be even combined and bonded to one another. Bonded joints exhibit very good mechanical properties at temperatures ranging from –75°C to +80°C. The adhesive contains a corrosion inhibitor.

ADVANTAGES

  • curing at room temperature
  • high shear and peel strengths, high toughness
  • high chemical resistance
  • contains corrosion ihnibito and spacer filler
  • suitable for gluing of metals, composites, stone, wood

APPLICATION

  • Aviation
  • Car industry
  • Mechanical engineering
  • Space industry
  • Electro industry
Table liquid adhesives
Adhesive LETOXIT Mix ratio(volume) Pot life (min) Manipulation strength (25 °C) Final strength (25 °C) Characteristic Techn. sheet
PL50 100:47 60 – 90 24 h 4 – 5 days* structural adhesive, aviation grade  TL PL 50 EN
PL 60 100:47 60 – 90 24 h 7 days* extra strong gluing of metals, composites, wood and glass with improved temp. resistance  TL PL 60 EN
PL 81 100:45 120 – 240 24 h 4h/80 °C extra strong gluing of metals, composites, wood and glass with High temp. resistance  TL PL 81 EN

*could be speed up by heating (at 50°C final strength in 4 hours, at 120°C final strength in 1 hour)

Adhesive LETOXIT Viscosity (Pa.s) Shear strength (MPa) Peel strength (N/mm) Tg (°C)
PL 50 pastelike 34 – 40 2 – 7 50
PL 60 pastelike 30 – 35 3 – 6 60
PL 81 pastelike 27 – 33 2 – 4 80**

**cured at 80°C

 

Package of the liquid adhesives Letoxit PL

  • plastic bucket 5kg, 10 kg
  • minimal order 11 kg of the system (component A + B together)

 

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Do not hesitate to contact our representative and together we will find solution for your needs.

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