CRYO ADHESIVE EPIFIL-9661

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(USED AS AN ADHESIVE FOR THE END FITTING REINFORCEMENT OF POLYIMIDE PIPELINES & AS A MATRIX RESIN FOR THE KEVLAR COMPOSITE OVER WRAP ON LOX FEED POLYIMIDE PIPELINES )

Adhesive EPIFIL-9661 is three part room temperature curing adhesive. Part A is a urethane modified epoxy resin, prepared by the co-reaction of epoxy, polyol and isocyanate. Part-B is a mixture of amine hardeners and Part-C is a Silane Coupling agent.

This adhesive system presently finds different applications such as matrix resin for Aramid (Kevlar) composite over-wrap on Liquid Oxygen (LOX) feed polyimide pipelines , for reinforcing the metallic end fittings made of SS-321 and the fibre glass tape to the LOX and LH2 polyimide pipe lines and as a coating material for glass phenolic composite which perform as a thermal isolator between the mix ratio controller and (MRC)/apparent velocity regulator (AVR) valve and the motor in the cryogenic stages of GSLV.

Salient Features

  • Three-component, RT curable,toughened, low viscous polymer liquid adhesive
  • Increased pot life [up to approx. 3 hrs.]
  • Good bond ability with PI film as well as SS materials
  • Flight qualified
    Properties
    Values
    Epoxy value (equivalents/kg) of Part-A
    3.5 – 4.5
    Viscosity at 30 0C (cps) of Part-A
    450 –700
    Amine Value (mg KOH/g) of Part-B
    340-400
    Viscosity at 30 0C (cps) of Part-B
    350-500
    Pot life at 25 0C (minutes)
    180 (minimum)
    Hardness Shore D (after 7 days cure at RT (30±50C)
    65 (minimum)
    Lap Shear Strength (PI-PI on Aluminium alloy back up) at RT (at 25 0C), (in kg/cm2)
    40 (minimum)
    Lap Shear Strength (PI-Fibre glass tape on SS-321 back up) at RT (air conditioned room, at 25 0C), (in kg/cm2)
    40 (minimum)

VSSC is willing to offer the technology of EPIFIL 9661 to eligible interested parties who are in the field of manufacturing similar items

Interested entrepreneurs are requested to contact the address given below with all relevant particulars regarding their line of current activity, infrastructure available, market assessment of the product, financial arrangements made, turn over and sales of their products for the past years and a copy of their latest annual report.

For further details please contact: [email protected]