Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Features
- Prepreg
- Fast curing cycle: 15-20 min @ 250°F.
- Tack time of pieces kept with release film: 4 - 6 hours @ 68°F (Tack can be reactivated with a hair drier during lamination).
- Roll tack time out of the bag (with the shrink-film): more than 24 hours @ 68°F.
- Suitable for low pressure: 1-3 bar.
- Excellent flexibility and handling.
- Controlled flow for ease processing (autoclave, press-mold & vacuum bagging).
- Laminate
- Superior toughness and impact strength.
- Excellent corrosion resistance to a broad range of organic and inorganic acids, alkalis, oxidizing chemical and salt solutions, commonly up to 239°F (115°C).
- Prepreg
Applications & Uses
- Markets
- Applications
- Compatible Polymers & Resins
- Composites End Use
- Composites Processing Methods
- Typical Applications
FRP parts for chemical resistance purpose.
- General-purpose composites.
- High performance sporting goods.
- Racing vehicles.
- Curing Conditions
In press-mold, laminates should be cured for 15-20 min @ 250°F (121°C) / 1-3 bar. Pressure should increase gradually to reach its maximum within 60-90 sec. In some applications, a post-cure @ 293°F (145°C) is recommended for optimum performance.
- Laminates up to 1/8” (3 mm) thick can be cured without dwell time. A dwell time should be considered according to thickness and heat-up rate, which depends on the mass, type of tool and molding process (vacuum and autoclave).
- If a prepreg sheet is maintained long time out of the bag before lamination, and lost its tack, heat it with a hair dryer to reactivate the tackiness.
Properties
- Physical Properties
Value Units Test Method / Conditions Standard Weight (Without Release Film) 0.089 lb./sq. ft. - Standard Resin Content 36.0 % - Standard Tack Good Tack on Both Sides - - Cured Ply Thickness 0.254 mm - - Laminate Properties
[3 mm thick, cured @ 250ºF (121ºC), for 15 min. & Post-cured @ 293ºF (145ºC)]
E-Glass 7781 Stitched UD Carbon (Standard Modulus) Flexural Strength, MPa (ASTM D790) 550-600 1312-1448 Flexural Modulus, GPa (ASTM D790) 22-24 109-110 Interlaminar Shear Strength, MPa (ASTM D-2344)48-52 48-52 75-84 Glass Transition Temperature (DSC): 140-145ºC
Safety & Health
- Handling and Safety Precautions
Usual precautions should be observed. The prepreg contains mainly uncured synthetic resins. The operator has to use appropriate mask - respirator and work in a clean, dry (R.H. = 50% or less) and ventilated area. The use of clean disposable inert gloves provides protection for the operator and avoids contamination of material and components.
Storage & Handling
- Shelf Life
- 1 Year
- Storage
SIMPREX® M655-200 prepreg should be stored in its original packaging film (humidity and air-proof), or an equivalent barrier film, at 68°F (20°C).