Glass fiber reinforced refrigerant-resistant insulating material and preparation method thereof

Embodiments of the invention disclose a glass fiber reinforced refrigerant-resistant insulating material and a preparation method thereof. The glass fiber reinforced refrigerant-resistant insulating material comprises a first polyaramid fiber paper, an alkali-free glass fiber cloth, a polyester film and a second polyaramid fiber paper which are successively laminated, wherein the alkali-free glassfiber cloth and the first polyaramid fiber paper, the alkali-free glass fiber cloth and the polyester film, and the polyester film and the second polyramid fiber are respectively bonded through an adhesive which is a composite adhesive comprising a polyurethane resin adhesive, a polyimide resin adhesive and a refrigerant-resistant modifier. Thus, the insulating material provided by the embodiments of the invention has good mechanical properties, electrical properties, thermal stability and refrigerant resistance, can be applied to coils of compressors and air conditioning systems, and can also be applied to electrica