Kordsa CM 11

CM11 resin is Mid Tg and its prepregs are suitable for hot painting, hot gluing and cataphoresis processes. New resin system not only cures under 3 minutes at 150°C at press under isothermal curing conditions but also hot de-moldable and long out-life of two weeks at ambient temperature. These extreme conditions does not affect the visual Performance of prepreg system with CM11, capable of Class A Surface. Drapability is suitable for press molds and low to medium tack optimized for press curing.

Polymer Name: Epoxy Resins & Compounds

Functions: Prepreg

Reinforcement Material: Aramid (Kevlar), Carbon Fibers, Glass Fibers

Processing Methods: Compression Molding

End Uses: Displays, Structural Components, Structural Parts

Technical Data Sheet

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

Chemical Family
Polymer Name
Reinforcement Material
Composite Materials Functions
Chemical Structure
Epoxy
Technologies
Product Families
Weaving Style

Plain, twill, UD

Features & Benefits

Materials Features
Key Features
  • Suitable for fast press molding,
  • Cosmetic grade visual carbon look,
  • Class A Surface quality,
  • Good hot de-molding performance
  • Suitable for structural applications
  • Good chemical resistance
  • Suitable for Cataphoresis/ Hot Painting/Hot adhesive bonding
  • Suitable for autoclave short curing cycle

Applications & Uses

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Mid Tg (150 - 180°C)150--
Initial Mix Viscosity (65°C)35Pas-
Gel Time (Hot Plate)( 140°C)70Sec-
Gel Time (Hot Plate)( 150°C)40Sec-
Gel Time (Hot Plate)( 160°C)15Sec-
Gel Time (Rheometer)(120°C)260Sec-
Gel Time (Rheometer)(140°C)69Sec-
Gel Time (Rheometer)(150°C)54Sec-
Gel Time (Rheometer)(160°C)38Sec-
Gel Time (Rheometer)(180°C)17Sec-
Tensile Strength39MPaTensile Test (ASTM D3039)
Tensile Modulus3028MPaTensile Test (ASTM D3039)
Elongation at maximum1,5%Tensile Test (ASTM D3039)
Elongation at maximum5%Flexural Test (ASTM D790)
Compression Strength107MPaCompression Test (ASTM D3410)
Compression Strain at maximum4.6%Compression Test (ASTM D3410)
Flexural Strength136MPaFlexural Test (ASTM D790)
Flexural Modulus3490MPaFlexural Test (ASTM D790)
Fracture toughness K1C (Bend Notch Test, 5 min 140°C)1.05MPa√m-
Fracture energy G1C (Bend Notch Test, 5 min 140°C)340J/m2-
Maximum Displacement160°CHDT (TMA)
Dry Fabric Areal Weight200 - 600gsm-
%Resin Content (by weight)37 - 48 ± 2--
Tackiness LevelLow Tack--
Cured Matrix Properties
Cured Matrix Properties (cured at 80 ⁰C 30 minutes - 100 ⁰C 30 minutes - 140 ⁰C 60 minutes)

Glass Transition Temp
(Tg by DSC) [°C]

Ramped from RT to 150°C (10C/min) @150 °C 5 min
Ramped 150 to 210°C (10C/min)
155
Isothermal press at160 °C , mold at RT
Wait to mold reach 160 °C at160 °C 5 min
Ramped 160 to 210°C (10C/min)
160
Isothermal press at180 °C , mold at RT Wait to mold reach 180 °C at 180 °C 5 min
Ramped 180 to 210°C (10C/min) at 210 °C 30 min Postcure
165
ISO 11357 (RT to 210°C, at 210°C 5 mins, cool to 100°C) 145
Tg DMA 1Hz, 3°C/min Onset of E’ 156
Maximum of Tanδ 198
Maximum of E’’ 173

 

Technical Details & Test Data

Dynamical Viscosity Profile of the Formulation

Kordsa CM 11 - Dynamical Viscosity Profile of The Formulation

Compression Molding (Recommended)

Kordsa CM 11 - Compression Molding (Recommended)Pressure: Minimum of 7 bar (7.2 kg/cm2) (*), 30 bar is recommended.

Ramp Rate: Consolidated prepregs (preforms) can be loaded into a pre-heated tool (compression molding).

Recommended Cure Cycle: 3 minutes at 150 C +/-5C, 30 bar @ Press

Cool Down: Cured parts can be removed from tool without cooling (hot demolding). Recommended Post-Cure Cycle(if needed): 6 hours at 150 C +/-5C @ Oven

Storage & Handling

Storage Life

6 months at  -18°C

Work Life

2 weeks at RT

Prepreg Shelf Life

Prepreg Shelf Life at 23 °C for 2 weeks

Tack Life

5 Days at RT Initial