LR296 – EH4 High Temp Epoxy Lamination

Resin LR296

Hardener EH 4

 

Laminating & Casting Epoxy Resin System

 

Medium viscosity, clear, epoxy resin system with high elongation for high performance filament winding, laminating and tooling applications.  Excellent resistance against acids, alkalis and water. Very high heat resistance of 200 C.

 

FEATURES

Good wetting of reinforced fibers – Medium viscosity – High heat distortion                                       

Long pot life – High toughness with good mechanical properties

 

METHOD OF APPLICATION

 

Hand lamination – Filament winding – Casting

Warm resin to about 40 C to obtain a better viscosity – Pot life / working time will be considerably reduced.

                                                           

 

Description

 

Colour:                Amber, clear

 

Mixing Ratio:      LR296                        100      by weight

                                    EH 4                             32     

                                               

 

Viscosity:             LR294                        8000 to 9000 mPa.s at 25 Deg. C

                                    EH 4                           400 to 600 mPa.s at 25 Deg. C

                                   

 

Gelation Time:     EH4:                          5 – 6 Hrs       at 25 Deg. C

                                   

 

 

 

 

 

 

 

 

 

 

LR296 / EH 4

 

Laminating and Casting Epoxy Resin System

 

CHARACTERISTICS after CURE (Unreinforced system)

 

Flexural Strength:                            140 Mpa

Tensile Strength:                              70 Mpa

Tensile Modulus:                             2,24

Elongation in Tension:                     3 – 5 %          

 

Heat Distortion Temperature (with EH4):

                                                          60 Deg. C (7 days at 25 Deg C)

100 Deg C (Post curing at 100 Deg for 4 hrs)

                                                                        180 Deg C (2 hrs at 80 C + 3 hrs at 170 C)

                                                                        200 Deg C (2 hrs at 80 C + 3 hrs at 190 C)

 

NOTE:            There is no full through-cure at room temperature, therefore the system must be post-cured.

 

TYPICAL CURE SCHEDULES

Use a maximum heat up rate of 20°C per hour. Cool at a maximum rate of 20°C per hour

           

 

NOTE:            Due to the fact that this system requires a post cure, care must be taken when demoulding or handling the partially cured laminate.

 

SAFETY PRECAUTIONS

 

Normal health and safety precautions apply when handling this product.

            Ensure                        – Adequate ventilation.

– Use of gloves and safety glasses.

– Use of barrier creams

– Use of suitable hand cleaners

 

STORAGE

 

The shelf life is 12 months in unopened containers at room temperature.

 

 

 

The above data are offered for customer’s guidance only. It implies no guarantee. Customers must conduct their own tests to determine the suitability of the material for their specific applications. Technoresin cannot assume responsibility for results obtained by use of this product as we have no control over end-use application or handling. Technoresin therefore specifically disclaims any damage or loss of any kind in relation to the use of this product. (Version 19.1 Date 1.3.2019)