Mica sheet

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Mica sheet consists of polysilicic muscovite, quartz Garnet and rutile Can appear Albite 、 Zoisite and Hard chlorite Garnet rich Fe and Mg ， Siliceous muscovite Si in can reach 3.369, which is also a high-voltage combination. Insulated and low loss thermal resistance Function, very good boldface.

Chinese name: Mica sheet
Composition: Silica muscovite, quartz, garnet, etc
Performance: Insulation and low loss thermal resistance function

Application: TV, power capacitor, thermal relay
Variety: Natural mica, synthetic mica, mica tape
Character: Glass luster, generally colorless and transparent

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brief introduction

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Natural mica electrical insulation sheet

Natural mica sheet yes Thick mica After stripping, thickness setting, cutting, drilling or Punching It is made of mica parts with certain thickness and shape. This product is suitable for TV sets Power capacitor 、 Thermal relay Monitor display, aerospace, aviation, communication, radar, heat resistance Skeleton piece Equal act Raw and auxiliary materials 。 Score: Electric heater Chip, heater protector shim Electronic segments and bulb segments are made of natural mineral products, which are characterized by pollution-free, insulation and good voltage resistance customer demand Punching various specifications of natural mica.

Mica sheet- Muscovite flake - Phlogopite sheet - Biotite sheet - Sericite Slice- lithia mica Slice- Soda mica Slice- Vanadium mica Flake mica fragment large mica flake

purpose

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Mica and its products are widely used in electrical products as Insulating material 。 Its varieties include: Natural mica ， Synthetic mica , mica tape, Mica plate , mica foil, Mica glass Etc.

classification

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Mica insulating sheet for natural electrical appliances

There are many kinds of natural mica, including muscovite and Phlogopite Two. Muscovite has Glassy luster , generally colorless and transparent; Phlogopite Metallic luster and Semi metallic luster The common ones are golden yellow, brown, light green, etc., with poor transparency. Muscovite and phlogopite have good Electrical performance and Mechanical properties ， Heat resistance Okay, chemical stability and Corona resistance OK. Both kinds of mica can be peeled and processed into soft and Flexible Sheet. The electrical property of muscovite is better than that of phlogopite, but phlogopite is soft and its heat resistance is better than that of muscovite.

According to the use, mica can generally be divided into three categories: mica flakes (thin mica), mica for capacitance and mica thick flakes for electronic tubes. The area and thickness specifications of these three categories of mica are shown in the following table and their grades and uses.

Area specification

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Natural mica sheet

Specification No. Area（ square centimetre ）

#Over 3 65

#4 50-65

#4.5 40-50

#5 30-40

#5.5 20-30

#6 15-20

#6.5 10-15

#7 6-10

#8 4-6

Note: Area refers to the maximum rectangular area on the mica sheet

Thickness group of mica flakes

Specification No. Group thickness (μ m)

#3 #4 #4.5 #5 #5.5 #6 #6.5 #7 I 10-20

#3 #4 #4.5 #5 #5.5 #6 #6.5 #7 II 20-30

#8 III 5-35

Thickness specification

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Specification No. Area of mica sheet for capacitor (square centimeter) Thickness of mica sheet for capacitor (μ m)

#Over 1 155 (1) 20-25

#2 90-155

#3 65-90 （2）26-35

#4 40-65

#5 20-40 （3）36-45

#6 10-20

#7 6 -10 (4) Above 46

Area refers to the maximum rectangular area of mica sheet

For each specification number mica There are four thickness specifications

Specification No. Mica sheet for electronic tube Diameter (mm) Mica sheet thickness for electronic tube (mm)

#1 18 0.2 above

#2 20 0.2 above

#Over 3 25 0.25

#Over 4 30 0.25

#Over 5 50 0.3

#6 70 0.3 above

#Over 7 80 0.3

#Over 8 100 0.3

#9 120 above 0.3

Diameter refers to the mica Effective area Diameter of punching and shearing parts.

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