Top Supplier of Diamond Dotted Insulation Paper for Transformers
For procurement specialists and transformer manufacturers, the integrity of your product begins with the quality of your materials. When it comes to robust inter-coil insulation, Diamond Dotted Insulation Paper stands as an industry benchmark. Sourcing this critical componentthrough a dedicated diamond dotted insulation paper wholesale partner is not just a purchase—it's an investment in reliability andperformance. This guide outlines why this material is essential and how our manufacturing expertise makes us your ideal supplier.
What is Diamond Dotted Insulation Paper?
Diamond Dotted Insulation Paper, also referred to as Epoxy Diamond Dotted Paper or DDP, is a composite electrical insulation material. It consists of a high-strength Kraftpaper base (made from 100% sulfate pulp) coated with a heat-curable epoxy resin adhesive. The epoxy is precision-applied in a consistentdiamond pattern (typically 9.5mm x 9.5mm with 15.9mm center spacing) on one or both sides.
This sophisticated pattern is key to its performance, ensuring optimal adhesion and resin distribution during the curing process.
Key Advantages of Our Diamond Dotted Paper:
Our Epoxy Dotted Paper is engineered for excellence, offering distinct benefits that streamline your production and enhance end-product quality:
1. Precision-Controlled, One-Off Curing: Unlike variable adhesives, our paper is dry and non-tacky at room temperature. Under specific heating conditions (reaching ~90°C), the epoxy undergoes a single, irreversible thermal curing process. Once cured, it creates a permanent, rigid bond with a remarkable felt strength of up to 70 psi at 100°C. This one-off curing is critical for creating a monolithic, stable winding structure in oil-immersed transformers.
2. Proven Mechanical & Dielectric Strength: The foundation of our material is Kraft paper of the highest purity, ensuring superior mechanical toughness and reliable dielectric properties. This guarantees the structural integrity and long-term electrical insulation of your transformer windings.
3. Exceptional Compatibility: After the epoxy resin has hardened, our Diamond Dotted Insulating Paper demonstrates excellent compatibility with all standard liquid dielectrics (transformer oil), ensuring no degradation of performance over the transformer's operational lifespan.
4. Primary Application: Engineered for Transformer Excellence
The principal application of this advanced material is in oil-immersed transformers for insulation between coils. The diamond-dotted pattern ensures that during the winding and curing stages, the insulation layers bond securely to the conductors and to each other. This process significantly enhances the mechanical stability, short-circuit strength, and overall durability of the transformer assembly.
Why Partner with CHR? - Your Expert Manufacturer for Wholesale
Choosing a wholesale supplier should be based on more than just price; it should be grounded in trust and proven capability. Here’s what sets our factory apart as your professional partner:
★Deep-Rooted Expertise: With over 20 years of focused experience in producing electrical insulation materials, we have mastered the nuances of manufacturing. Our long-standing presence in the industry is a direct testament to the consistent quality and reliability we deliver.
★A Global Community of Trust: Having successfully supplied 100+ clients worldwide, we understand the stringent requirements of international transformer manufacturers and large-scale distributors. Your business is in safe hands.
★Uncompromising Quality Control: Our two decades of operation are built on a foundation of rigorous quality control. Every batch of our Dotted Presspaper is tested to ensure it meets specified standards for thickness, mechanical strength, and curing performance, giving you complete confidence in every roll.
★Validate Quality with Free Samples: We are so confident in the superiority of our Diamond Dotted Insulation Paper that we invite you to test it yourself. We offer free samples for a thorough evaluation, allowing you to verify its properties against your technical specifications before committing to a bulk order.
In a sector where failure is not an option, the choice of your insulation material supplier is critical. Partner with a manufacturer that combines extensive experience with an unwavering commitment to quality. Chengrui Insulation Materials Co.,Ltd. has always supplied high-quality epoxy dotted paper for transformer insulation. Contact and start from samples now!
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