Electrical Bobbin Phenolic Plastic

Model 7802-A is a thermoset phenolic molding material intended for bobbin-type structural components. These molded parts may perform supporting, positioning, connecting, or insulating functions in electrical appliances, electrical instruments, and machinery.

The material can be processed by injection molding or transfer molding. Its flowability can be matched with the bobbin outline, wall thickness, hole positions, reinforcing structures, and mold conditions.

Electrical Bobbin Phenolic Plastic is intended for parts that require a combination of mechanical support, heat resistance, flame performance, electrical insulation, and dimensional control.

For bobbins with detailed holes, thin sections, grooves, or assembly positions, customers should provide technical drawings or a physical prototype. Sample molding can then be used to confirm material flow, dimensions, hole positioning, structural integrity, and assembly fit.

The supplied description and parameter table consistently record a surface resistance of at least 10¹¹ Ω and a dielectric loss factor at 100 Hz of no more than 0.1.

The material also reaches a UL94 V0 flammability rating.

These values provide an electrical and flame-performance basis for insulating bobbin structures. However, other performance data differs between the main description and the parameter table and must be confirmed before publication.

The material should be approved according to the actual component design, working environment, electrical requirements, mold structure, and sample results.

The main description records a flexural strength of at least 80 MPa and a tensile stress at break of at least 45 MPa. It also records a notched Charpy impact strength of at least 1.5 kJ/m² and an unnotched Charpy impact strength of at least 5.5 kJ/m².

The product parameter table instead records a flexural strength of at least 130 MPa and an unnotched impact strength of at least 20.0 kJ/m².

The main description states a heat deflection temperature under load, Ti 1.8, of at least 170°C. The parameter table states at least 200°C.

The main description gives a shrinkage range of 0.40% to 0.60% and a density of 1.50 to 1.60. The parameter table gives a shrinkage range of 0.30% to 0.50% and a density of 1.55 to 1.65.

All of these figures come from the supplied source. Final approved values should be confirmed before the Electrical Bobbin Phenolic Plastic page is released.

Zhejiang Naso Synthesis Co., Ltd. can develop products according to customer drawings or physical prototypes. An automatic batching system and a DCS automated control system are used to manage raw material ratios and key production parameters.

Quality personnel monitor production and complete a full inspection before packaging. Third-party inspection can also be accepted.

The minimum order quantity is 1,000 kg. Samples are available before bulk production. Customized sample development normally takes approximately 30 days. Standard production normally requires about 7 days, while customized products normally require about 20 days.

Export packaging can be customized according to bobbin shape, stacking method, and transportation requirements. EXW, FOB, and DDP trade terms are supported.

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