A solvent-free environment-friendly type mica tape and a preparation method thereof

Abstract

The invention discloses a solvent-free environment-friendly type mica tape comprising a piece of mica paper, enhanced materials and adhesive which are recombined. The adhesive is composed of the following substances according to parts by weight: 40-60 parts of epoxy resin, 10-20 parts of maleic anhydrides, 1-5 parts of dioctyl phthalic acid, 10-20 parts of nonsaturated polyesterimide resin and 5-10 parts of modified organic silicone resion. The enhanced materials are one kind among glass fibre cloths, polyimide films or polyester fibre non-woven fabrics. The mica tape prepared in the invention has relatively good binding manufacturability and insulating properties. While basic performance of the mica tape is guaranteed, and the usage of an organic solvent is substantially reduced. The mica tape prepared in the invention facilitates atmosphere environmental protection.

Description

technical field

[0001] The invention belongs to the technical field of solvent-free environment-friendly mica tape manufacturing, and in particular relates to a mica tape prepared by using a solvent-free adhesive. Background technique

[0002] Mica tape is the most irreplaceable and critical insulating material for motors, especially large and high-voltage motors. However, the mechanical strength of mica is too low to meet the requirements for mechanical strength in the motor manufacturing process and in actual operation of the motor. Reinforcing materials must be used. be enhanced. At present, the reinforcing materials used in national standards, industry standards, and enterprise standards of various mica tape manufacturers are all alkali-free glass fiber cloth, insulating paper, and plastic film for electricians.

[0003] The main basic material of mica tape includes mica paper, reinforcing material, adhesive and other parts. The adhesive in the mica tape plays an impor...

Examples

Embodiment 1

[0020] 1) Put epoxy resin, maleic anhydride and unsaturated polyesterimide resin in the reaction kettle according to the proportion, stir, heat to 60°C, and keep it warm for 30min;

[0021] 2) Continue to add polyester-modified silicone resin to the reaction kettle, raise the temperature to 100°C, keep warm for 1 hour, add dioctyl phthalate, then raise the temperature to 130°C, keep warm for 10 minutes, and the adhesive can be obtained;

[0022] 3) Laminate and dry the mica paper, glass fiber cloth and adhesive in the lamination equipment according to the conventional method and proportion, and then cut it into the required specifications.

Embodiment 2

[0024] 1) Put epoxy resin, maleic anhydride and unsaturated polyesterimide resin in the reaction kettle according to the proportion, stir, heat to 75°C, and keep it warm for 60min;

[0025] 2) Continue to add polyester-modified silicone resin to the reaction kettle, raise the temperature to 120°C, keep it warm for 2 hours, then add dioctyl phthalate, then raise the temperature to 145°C, keep it warm for 20 minutes, and the adhesive can be obtained;

[0026] 3) Laminate and dry the mica paper, polyimide film and adhesive in lamination equipment according to conventional methods and proportions, and then cut them into required specifications.

technical field

[0001] The invention belongs to the technical field of solvent-free environment-friendly mica tape manufacturing, and in particular relates to a mica tape prepared by using a solvent-free adhesive. Background technique

[0002] Mica tape is the most irreplaceable and critical insulating material for motors, especially large and high-voltage motors. However, the mechanical strength of mica is too low to meet the requirements for mechanical strength in the motor manufacturing process and in actual operation of the motor. Reinforcing materials must be used. be enhanced. At present, the reinforcing materials used in national standards, industry standards, and enterprise standards of various mica tape manufacturers are all alkali-free glass fiber cloth, insulating paper, and plastic film for electricians.

[0003] The main basic material of mica tape includes mica paper, reinforcing material, adhesive and other parts. The adhesive in the mica tape plays an impor...

Examples

Embodiment 1

[0020] 1) Put epoxy resin, maleic anhydride and unsaturated polyesterimide resin in the reaction kettle according to the proportion, stir, heat to 60°C, and keep it warm for 30min;

[0021] 2) Continue to add polyester-modified silicone resin to the reaction kettle, raise the temperature to 100°C, keep warm for 1 hour, add dioctyl phthalate, then raise the temperature to 130°C, keep warm for 10 minutes, and the adhesive can be obtained;

[0022] 3) Laminate and dry the mica paper, glass fiber cloth and adhesive in the lamination equipment according to the conventional method and proportion, and then cut it into the required specifications.

Embodiment 2

[0024] 1) Put epoxy resin, maleic anhydride and unsaturated polyesterimide resin in the reaction kettle according to the proportion, stir, heat to 75°C, and keep it warm for 60min;

[0025] 2) Continue to add polyester-modified silicone resin to the reaction kettle, raise the temperature to 120°C, keep it warm for 2 hours, then add dioctyl phthalate, then raise the temperature to 145°C, keep it warm for 20 minutes, and the adhesive can be obtained;

[0026] 3) Laminate and dry the mica paper, polyimide film and adhesive in lamination equipment according to conventional methods and proportions, and then cut them into required specifications.