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Mica tape production method without using organic solvent

An organic solvent, mica tape technology, applied in mica, inorganic insulators, insulators, etc., can solve the problems of difficult control of coating position and uniformity, potential safety hazards due to high voltage charges, and high production cost of mica tapes, and achieve uniformity of gluing. Ease of control, reduced energy consumption, less demanding effects

Active Publication Date: 2014-04-02
ZHUZHOU TIMES ELECTRIC INSULATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above existing technologies, or the use of organic solvents results in high production costs, serious pollution, and slow production speed of the mica tape, or there are potential safety hazards in high-voltage charges, and the coating position and uniformity are not easy to control, all of which need to be further improved.

Method used

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  • Mica tape production method without using organic solvent
  • Mica tape production method without using organic solvent
  • Mica tape production method without using organic solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Single-sided glass cloth reinforced mica tape with less glue

[0039] Using the solvent-free mica tape production method to prepare single-sided glass cloth reinforced mica tape with less glue, the required raw materials are as follows:

[0040] 1) Polyester modified epoxy resin, 1%-10% filler is added to the resin, and the softening point of the resin is (45±2) °C.

[0041] 2) Muscovite paper quantification is (160±10) g / m 2 , The mica paper contains 3-7% polyaramid fibers.

[0042] 3) The mass per unit area is 20-26g / m 2 High-quality glass fiber cloth, the warp and weft densities are 23-27 threads / cm and 9-13 threads / cm respectively, and the glass cloth is treated with a coupling agent compatible with epoxy.

[0043] Such as figure 1 As shown, the specific process of preparing single-sided glass cloth reinforced mica tape with less glue by adopting the production method of mica tape without using organic solvent is as follows:

[0044] A. After the...

Embodiment 2

[0049] Embodiment 2: Single-sided polyester film reinforced less glue mica tape

[0050] Adopting the production method of mica tape without using organic solvents to prepare single-sided polyester film reinforced mica tape with little glue, the required raw materials are as follows:

[0051] 1) Modified polyester resin, resin softening point (40±2) ℃.

[0052] 2) Muscovite paper quantification is (160±10) g / m 2 .

[0053] 3) The mass per unit area is 42g / m 2 Polyester film, polyester film thickness 0.03mm.

[0054] Such as figure 2 Shown, take the mica tape production method that does not use organic solvent to prepare the concrete technological process of single-sided polyester film reinforcement little glue mica tape as follows:

[0055] A. After the mica paper is unrolled, it is coated with adhesive by the heating roller, the temperature of the roller is (95±3)℃, and the amount of glue applied is (10-15)g / m 2 .

[0056] B. Composite the polyester film with the mi...

Embodiment 3

[0062] Example 3: Porous mica tape

[0063] Adopt not to use organic solvent mica tape production method to prepare porous mica tape, required raw material is as follows:

[0064] 1) Polyester modified epoxy resin, resin softening point≦45℃.

[0065] 2) Muscovite paper quantification is (160±10) g / m 2 , The mica paper contains 3-7% polyaramid fiber.

[0066] 3) The mass per unit area is 20-26g / m 2 High-quality glass fiber cloth, the warp and weft densities are 23-27 threads / cm and 9-13 threads / cm respectively, and the glass cloth is treated with a coupling agent compatible with epoxy.

[0067] 4) The mass per unit area is (20±3) g / m 2 polyester non-woven fabric.

[0068] Such as image 3 Shown, take the mica tape production method that does not use organic solvent to prepare the concrete technological process of porous mica tape as follows:

[0069] A. After the mica paper is unrolled, it is coated with adhesive by the heating roller, the temperature of the roller is ...

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Abstract

The invention discloses a mica tape production method without using an organic solvent. The mica tape production method comprises the following steps of unwinding of a reinforced material; unwinding of mica paper and roller painting of an adhesive; hot-press compositing; winding; slitting. The novel mica tape production method is characterized in that any solvent is not used, and oven baking is not used; the roller painting of the adhesive adopts a hot roller for painting, and the adhesive painting amount can be controlled by heating a roller and controlling a gap between scraping rollers; the roller painting of the adhesive adopts a gluing roller of a sandwich layer structure, the scraping rollers and a glue groove, and the sandwich layer structure is internally filled with hot water or hot oil; the hot-press compositing adopts a mode of oppositely pressing a hot pressing roller and a cold pressing roller, the hot pressing roller is internally filled with hot oil, and the cold pressing roller is internally filled with cooling water. According to the mica tape production method disclosed by the invention, the organic solvent is not used, the baking is not needed, the using of the organic solvent in a production process is avoided, the production cost is greatly reduced, the emission of waste gas is reduced, the energy consumption of a baking process is reduced, and the production speed is increased; in respect of a device, the investment cost is low, the production safety is high, the gluing is uniform, and the gluing can be easily controlled.

Description

technical field [0001] The invention relates to the technical field of manufacturing mica tape with less glue, in particular to a mica tape production method without using organic solvents. Background technique [0002] Mica tape is one of the most critical insulating materials in the manufacture of large and medium-sized motors. Mica tape is a strip-shaped insulating material made by bonding mica paper and reinforcing materials together with adhesives, and then cutting. The existing common mica tape production method is to dissolve and dilute the adhesive resin to below 50% with an organic solvent, which is convenient for glue coating operation and glue content control, and then bake in an oven to remove the solvent. The baked-off solvent is directly discharged into the atmosphere or processed through waste gas treatment equipment. Common production methods require the use of a large amount of organic solvents, which increases the production cost. At the same time, the em...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B19/00H01B3/04H01B17/60
Inventor 盛科山李强军陈子荣张玉龙王清
Owner ZHUZHOU TIMES ELECTRIC INSULATION
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