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Mica tape preparation method

A technology of mica tape and mica, which is applied to mica, insulators, electrical components, etc., can solve problems such as damage and functional failure of composite materials, and achieve the effect of enhanced contact surface, enhanced mechanical strength, and good effect.

Inactive Publication Date: 2020-04-07
湖北平安电工材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The obvious defect of this type is that the reinforcing material does not form an effective direct bond with the base material, and only relies on the interface bond. The damage of the bonded interface will inevitably lead to the failure of the function of the composite material; at the same time, as a composite of two or more layers of materials, Its thickness is the superposition of the thickness of each material

Method used

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preparation example Construction

[0030] The invention provides a kind of mica tape preparation method, comprises the following steps:

[0031] 1) Carrying out the suspension of the mica fine pulp to obtain mica paper; carrying out vacuum water absorption treatment on the mica paper, and the mica paper after the vacuum water absorption treatment is in a wet state;

[0032] Sizing on fiberglass cloth;

[0033] 2) Compounding the glass fiber cloth after sizing and the mica paper prepared in step 1) through pressing rollers to obtain a composite paper cloth, wherein when bonding and pressing;

[0034] 3) The composite paper cloth is subjected to pressing treatment, drying and curing treatment, winding, and cutting to obtain the target product mica tape.

[0035] Preferably, in the mica tape preparation method, the mica fine pulp is one or more of muscovite fine pulp, phlogopite fine pulp, calcined muscovite fine pulp, calcined phlogopite fine pulp and synthetic mica fine pulp combination.

[0036] Preferably, ...

Embodiment 1

[0041] Imported Indian phlogopite mica is selected and sent to the hydraulic crusher through a conveyor, and after classification and concentration, the suspension of Indian phlogopite mica fine pulp is obtained, which is sent to the copy making machine for copy processing;

[0042] Select quantitative 32g / m 2 Glass fiber cloth, coated with silicone-modified epoxy resin emulsion; Utilize the vacuum suction roll of papermaking machine to compound the glass fiber cloth after sizing and the mica paper prepared in step 1) through pressure rolls, After the vacuum suction roller enters the press section, under the pressing action of the press section, the glass fiber cloth is pressed into the mica paper embryo to form a composite mica paper; The coiling machine forms the mica tape embryo tape. The mica tape embryo tape is cut to obtain the mica tape.

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Abstract

The invention discloses a mica tape preparation method. The method comprises the following steps: 1) carrying out papermaking treatment on a suspension liquid of mica refined pulp to obtain mica paper; (2) bonding and pressing glass fiber cloth and the mica paper surface sticker prepared in the step (1) to obtain composite paper cloth, wherein, during bonding and pressing, the mica paper is in a wet state; and 3) carrying out squeezing treatment, drying and curing treatment on the composite paper cloth to obtain a target product mica tape. Compared with the traditional process, the preparationmethod disclosed by the invention is simple to operate; according to the invention, the glass fiber cloth with glue is directly embedded into the mica paper wet blank under external pressure to formmutual deep combination of the bodies, so that the contact surface of the composite material is greatly enhanced, the base material is more effectively reinforced, and the composite mica tape with better effect is obtained.

Description

technical field [0001] The invention belongs to the field of mica tape preparation, and in particular relates to a mica tape preparation method. Background technique [0002] Mica tape products are tape-shaped insulating materials that are compounded by adhesive, mica paper and reinforcing materials, and processed by baking, winding and cutting. Among them, mica paper, as the main insulating and refractory material, is formed by the weak van der Waals force between mica scales. Although the insulation and fire resistance performance is excellent, its own mechanical strength is too poor, and it needs reinforcement to be used in practice; Reinforcing materials, such as glass fiber cloth and film, provide the toughness of the mica tape during processing, and the mica tape reinforced with glass fiber cloth is more temperature-resistant than the film-reinforced mica tape; For mica paper and glass fiber cloth, under the pressure of environmental protection, the application of wat...

Claims

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Application Information

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IPC IPC(8): H01B19/00H01B19/02H01B17/60H01B17/66H01B3/04H01B3/08
CPCH01B3/04H01B3/08H01B17/60H01B17/66H01B19/00H01B19/02
Inventor 潘渡江李俊陈继威
Owner 湖北平安电工材料有限公司
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