In the process of continuously upgrading towards high-performance and environmentally friendly directions in fields such as electrical insulation materials, high-temperature resistant coatings, and special paper processing, resin-based materials with excellent electrical properties, heat resistance, and ease of application are becoming the core elements for the development of H-class insulation systems and special protective coatings. Although traditional solvent-based silicone resins can provide excellent heat-resistant insulation performance, their organic solvent emissions and the increasingly strict environmental regulations create a contradiction. Our company's product, solvent-free silicone resin 6GTY, as a high-solid content, nearly solvent-free methylphenyl polysiloxane resin, with its excellent electrical insulation performance, high-temperature resistance, and weathering resistance, as well as the environmental advantage of no VOC emissions during the construction process, demonstrates significant application value in H-class electrical insulation materials, mica board manufacturing, impregnating paints, and moisture-proof capacitor impregnation, providing environmentally friendly and high-performance resin-based material options for customers in various industries.


I. Core Physical and Chemical Characteristics of the Product


The solvent-free silicone resin 6GTY of our product is a colorless or light yellow homogeneous liquid without mechanical impurities. Its viscosity (25℃, 20-40mmHg cup) is not less than 15 seconds, and the solid content is up to 98±1%. The drying time (200℃) does not exceed 2 hours. Under the condition of 350℃×5 hours, the weight loss does not exceed 5%. The breakdown voltage under normal conditions (20±5℃) is not less than 65 kilovolts per millimeter, at 200℃ it is not less than 30 kilovolts per millimeter, and after moisture absorption it is not less than 40 kilovolts per millimeter. The volume resistivity under normal conditions is not less than 10¹² ohm-centimeters, at high temperatures it is not less than 10¹¹ ohm-centimeters, and after moisture absorption it is not less than 10¹² ohm-centimeters. The bending strength is not less than 20 kilogram-force per square millimeter, the water absorption rate (250℃×12 hours) does not exceed 1%, the smoke test QI-12 does not exceed level 3, and after boiling for 1 hour (150×150 mm) there is no layering. This resin is compatible with solvents such as butyl, alcohol, ether, and ester, providing flexible options for formula adjustments.


II. Core Performance Advantages


The solvent-free silicone resin 6GTY of our product demonstrates the following core performance advantages in electrical insulation and special coating applications:


Outstanding electrical insulation performance and high-temperature reliability. The resin has excellent electrical insulation performance, with a breakdown voltage higher than 65 kilovolts per millimeter under normal conditions and still above 30 kilovolts per millimeter at 200℃. It meets the strict requirements of H-class insulation systems (able to work at 180℃ or above for a long time). The volume resistivity remains at a high level of 10¹¹ to 10¹² ohm-centimeters under high temperatures and after moisture absorption. Excellent resistance to high and low temperatures, maintaining stable performance within the wide temperature range of -50℃ to 200℃.


Outstanding resistance to weathering and chemical resistance. The product has excellent flexibility, weathering resistance, and ozone resistance. It has excellent chemical stability. The water repellent and moisture-proof performance is outstanding, with a water absorption rate of not more than 1% (250℃×12 hours), and it still maintains reliable dielectric properties in a humid environment after boiling for 1 hour (150×150 mm).


Solvent-free environmental protection and safe construction operations. The solid content is up to 98±1%, nearly solvent-free, with no VOC emissions during the construction process, improving the working environment and reducing fire hazards.


III. Wide Application Areas


The solvent-free silicone resin 6GTY can play an important role in the following key application areas:


1. H-class electrical insulation materials. The product can completely replace the oil-based products used in the industry and be used for the production of H-class electrical insulation materials, including electrical insulation impregnating paints, covering paints, and moisture-proof capacitor impregnation.


2. Glass fiber mica boards and mica products. The product is suitable for the production of glass fiber mica boards and can withstand high-temperature environments, suitable for the insulation structure of electrical equipment such as motors and transformers.


3. Special paper processing. The product can be used for special-purpose paper processing, providing paper with high-temperature resistance, moisture-proof and insulation properties.


IV. High-temperature resistant coating and moisture-proof protection. The product can be used to prepare high-temperature resistant coatings, which are applied to the insulation treatment and moisture-proof protection of motor windings and transformer coils.


IV. Precautions for use


The diluent used for the resin must not contain water, sulfides or other substances, otherwise it will affect the adhesion, drying time and other properties of the paint film. Compounds such as acids, alkalis, salts and amines have the effect of accelerating the curing of silicone resins and affect the heat resistance and electrical properties. They should be avoided from being mixed.


V. Packaging specifications and storage conditions


The product is packaged in cardboard barrels (50 kilograms per barrel or 25 kilograms per barrel), sealed with a lid. It should be stored at room temperature of 0-35℃ in a ventilated and dry place, away from heat sources and direct sunlight. This product is transported as general cargo, with a storage period of 12 months. If the inspection is qualified after the expiration date, it can still be used.


VI. Quality guarantee and industrial chain value


Product 6GTY without solvent silicone resin has established a strict quality control system during the production process. Key indicators such as product appearance, viscosity, solid content, drying time, heat loss, breakdown strength, volume resistance, bending strength and water absorption rate are tested throughout the process to ensure consistency and reliability between batches. As the industries such as motors, transformers, new energy equipment and special coatings continue to develop towards high-performance and environmental protection, the demand for silicone resins with excellent electrical insulation and solvent-free environmental characteristics is steadily increasing. This product, with its 98±1% high solid content solvent-free property, H-level insulation level with a normal breakdown strength of over 65 kilovolts per millimeter, and environmental protection advantages such as no VOC emissions during the construction process, is becoming an important resin option in the H-level electrical insulation material field. It provides strong product support for promoting the transition from solvent-based to solvent-free in related industries.