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Glass/Epoxy prepreg


Prepregs – “PRE-imPREGnated sheet materials” are fibrous materials impregnated with reactive resin materials. Prepregs are the ideal starting material for lightweight yet high-strength constructional parts thanks to the diverse ways of processing these further.Characteristically, the prepreg resins are in the still very reactive B stage, are of medium to high viscosity and can thus be processed without any problems by supplying energy and molding to shape at the same time. The low-molecular and still fusible resins are transformed here to a high-molecular non-fusible C state. The prepreg systems are based on multifunctional, specially modified epoxy resins and a curing which although latent at room temperature, is a highly reactive system at higher temperatures. Structural components having very good mechanical properties can be fabricated with glass, carbon and aramide fibres.

This is a controlled process and we can adjust the resin system exactly to the conditions required for further processing.

Product code EW-3105
Appearance
Picture1
Specification Thickness
(Base material)
mm 0.21
(0.18)
Width mm 1000
Average mass g/m2 350
Resin content % 40±3
Property Resin flow % 2~8
Gel time(150℃) sec 80~120
Volatile Content % 0.3~1.0
Adhesion strength N/mm2
(kgf/mm2)
9.8~15
(1.0~1.6)
Standard curing conditions 150℃×1hr.or 130℃×4hr.
Property of molded article Tensile strength Warp N/mm2
(kgf/mm2)
215~254
(22~26)
Fill 196~245
(20~25)
Break voltage kV/mm 10~15
Insulation class F
Life (Storage condition) 6 months
(20℃>/Cool and dark space )
Typical application Outer layer or interlayer insulation of winding
  1. The above figures are not guaranteed value but one of the representative properties of the material.
  2. Width is negotiable
  3. Product slitted according to customer’s requirement is available.
  4. Properties such as resin content,resin flow,gel time or volatile content is also compliable to customer’s requirement
  5. Resin flow test piece size:180mm×180mm under 130℃×2kg/cm2×10min. condition

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