Coating fire-resistant mica tape and processing method thereof

A fire-resistant mica and processing method technology, which is applied to mica, conductors, cables, etc., can solve the problems of low fire-resistant strength and tensile toughness of mica tape, increase the processing cost of manufacturers, and high prices of fire-resistant cables. The processing method is simple, the effect of increasing the cable insulation performance and reducing the number of layers of mica tape

Inactive Publication Date: 2016-07-13
北京倚天凌云科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the design structure and form defects of the mica tape, the traditional mica tape also has the following disadvantages when used: because of its own lack of fire resistance, when in use, more layers of mica tape need to be wound on the surface of the fireproof insulation equipment. By increasing the winding thickness of the mica tape, the fire-resistant performance and fire-resistant grade can be improved to meet the requirements of national standards
However, due to the disadvantages of mica tape processing equipment and processing technology, the fire resistance strength and tensile toughness of the processed mica tape are not high, so when winding, as the thickness increases, it is easy to cause fracture, loosening, mica layer The separation between other layers can not be completely matched, which further affects the overall fire-resistant insulation performance of the product, resulting in unstable quality of a large number of fire-resistant cables, and increases the processing cost of the manufacturer, which is also the reason for the high price of fire-resistant cables.

Method used

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  • Coating fire-resistant mica tape and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, a coating refractory mica tape includes a mica core layer 1, the upper and lower ends of the mica core layer 1 are provided with a silicone resin adhesive layer 2, and the outside of the silicone resin adhesive layer 2 is provided with a glass The outer surfaces of the fiber cloth 3 and the glass fiber cloth 3 are provided with a high temperature resistant coating 4 .

[0023] The processing method of coating refractory mica tape of the present invention may further comprise the steps:

[0024] 1) Dilute the silicone resin, diluent and magnesium hydroxide to prepare a silicone resin mixed peptizer with a silicone resin content of 18% and a magnesium hydroxide content of 5%; put the mica paper into the silicone resin In the mixed peptizer, the silicone resin mixed peptizer can be evenly immersed in the front and back sides of the mica paper, and then two layers of glass fiber cloth are spread on the surface of the adhesive layer on the front a...

Embodiment 2

[0034] The difference from Example 1 is that the processing method of the coated refractory mica tape comprises the following steps:

[0035] 1) Dilute the silicone resin, diluent and magnesium hydroxide to prepare a silicone resin mixed peptizer with a silicone resin content of 20% and a magnesium hydroxide content of 8%; put the mica paper into the silicone resin In the mixed peptizer, the silicone resin mixed peptizer can be evenly immersed in the front and back sides of the mica paper, and then two layers of glass fiber cloth are spread on the surface of the adhesive layer on the front and back sides of the mica paper respectively. , thus forming a composite mica tape;

[0036] 2) Composite the composite mica tape by a dry laminating machine, and send the composite mica tape into the oven at a speed of 10 / meter per second;

[0037] 3) Stir the silicone resin with organic hydrate and ceramic powder materials to prepare a high-temperature-resistant coating peptizer with a s...

Embodiment 3

[0045] The difference from Example 1 is that the processing method of the coated refractory mica tape comprises the following steps:

[0046]1) Dilute the silicone resin, diluent and magnesium hydroxide to prepare a silicone resin mixed peptizer with a silicone resin content of 22% and a magnesium hydroxide content of 10%; put the mica paper into the silicone resin In the resin mixed peptizer, the silicone resin mixed peptizer can be evenly immersed in the front and back sides of the mica paper, and then two layers of glass fiber cloth are respectively laid on the viscose layer on the front and back sides of the mica paper surface, thereby forming a composite mica tape;

[0047] 2) Composite the composite mica tape by a dry laminating machine, and send the composite mica tape into the oven at a speed of 10 / meter per second;

[0048] 3) Stir the silicone resin with organic hydrate and ceramic powder materials to prepare a high-temperature-resistant coating peptizer with a sili...

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Abstract

The invention relates to a coating fire-resistant mica tape and a processing method thereof. The coating fire-resistant mica tape comprises a mica core layer. An organic silicon resin adhesive layers are respectively arranged on the top and bottom end surfaces of the mica core layer. Glass fiber cloth is arranged on outer side of each organic silicon resin adhesive layer. A high temperature-resistant coating is arranged on the outer surface of the glass fiber cloth. According to the invention, the process of the processing method of the coating fire-resistant mica tape is simple and convenient, the processed coating fire-resistant mica tap has an excellent insulating property, the insulating property of a cable is improved greatly after usage of the coating fire-resistant mica tap, the integral fire-resistant insulating property is improved, and the fire-resistant and high temperature-resistant properties are more stable; in addition, the high temperature-resistant coating is added, the coating crusts rapidly in a flame, each material layer of the coating fire-resistant mica tape does not separate under the protection of the high temperature-resistant coating, the phenomena of falling off, rupturing, loosening and the like in the using process do not happen, the damage of flame jet to the mica layer is prevented effectively, and the coating fire-resistant mica tape is integrally enabled to has characteristics such as shock resistance and water resistance.

Description

technical field [0001] The invention relates to a coated refractory mica tape and a processing method thereof. Background technique [0002] Mica tape is an important material for the production of fire-resistant cables. It is mainly made of a layer of glass fiber cloth and a layer of mica bonded and then dried. It has excellent high temperature resistance and combustion resistance. The mica tape has good softness in normal conditions. It is suitable for the main fire-resistant insulation layer in various fire-resistant wires and cables. However, due to the design structure and form defects of the mica tape, the traditional mica tape also has the following disadvantages when used: because of its own lack of fire resistance, when in use, more layers of mica tape need to be wound on the surface of the fireproof insulation equipment. By increasing the winding thickness of the mica tape, the fire-resistant performance and fire-resistant grade can be improved to meet the require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B3/04H01B3/08H01B7/29H01B13/00
CPCH01B3/04H01B3/08H01B7/29H01B13/00
Inventor 吴海峰
Owner 北京倚天凌云科技股份有限公司
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