6452 (GHG-P) Prepreg Material

It is suitable for use as interlayer insulation in Class H dry-type transformers, and as slot-to-slot insulation, liner insulation, and turn-to-turn insulation in Class H motors.

Keywords:

insulation Material

Category:

Prepreg Series

Nuclear and hydro power

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Product Description

Product Applications

Product Description

6452(GHG-P) It is a flexible composite material formed by laminating a polyimide film with alkali-free glass fabric on both sides, using a high‑temperature‑resistant adhesive. The laminate is then impregnated with a B‑stage, high‑temperature‑resistant resin and subjected to heat curing to produce a prepreg.

6452(GHG-P) It exhibits excellent heat resistance, superior dielectric properties, and robust mechanical performance, with easy impregnation and strong adhesion. It is rated for Class H thermal endurance. The product has passed SGS testing and complies with the EU RoHS environmental requirements.

6452(GHG-P) It can be used in Class H dry-type transformers as interlayer insulation, and in Class H motors as slot-to-slot insulation, liner insulation, and turn-to-turn insulation.

Performance Requirements for 6452 (GHG) Type Prepreg

Serial number	Indicator Name	Unit	Indicator
1	Appearance		The surface shall be smooth and even, free of stains, obvious resin unevenness, and impurities. When opened, the product should be free of defects such as sticking, creases, and bubbles.
2	Nominal Thickness and Permissible Tolerance	mm	0.15±0.03	0.20±0.03	0.25±0.035	0.40±0.03
3	Quantitative and Deviation	g/m²	200±50	250±50	350±50	410±55
4	Longitudinal tensile strength without bending	N/10mm	≥100	≥120	≥140	≥170
5	Breakdown voltage	KV	≥6	≥7	≥8	≥10
6	Soluble resin content	g/m²	≥45	60-90
7	Volatile content	%	≤1.5
8	Normal adhesiveness		Non-layered
9	Hot-state adhesion: 200±2°C, 2 h		No delamination, no bubbling, and no resin bleed (before pre-impregnation).
10	Heat resistance grade		Class H
Test Method GB/T 5591.2-2002

Note: 1. For products with special thickness specifications, the technical specifications and specific requirements may be agreed upon through negotiation.

　　2. If the customer has specific requirements regarding the product structure, these shall be implemented in accordance with the customer’s specifications.

　　3. Recommended curing conditions: 100°C for 8–10 hours, 130°C for 6 hours, and 150°C for 5 hours.

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