Mica Paper Base

The Electrical, Mechanical and Thermal Properties of Mica make it the best insulation material in the earth. The Mica Scrap and waste is used to make reconstituted Mica paper, which is used to make different kinds of electrical and thermal insulation material.

The properties of mica mineral are retained by using Mica paper with different bonding agents like, Epoxy and Silicon. The bonding agent are used as per requirement of application.

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Five types of Mica Paper Base are :-

Heater Mica Plate Insulation Mica Sheet Flexible Mica Sheet Commutator mica Plate Synthetic mica Sheet

i) Heater Mica Plate :-

SmithLamina Heater Mica Plate is manufacture using best quality Muscovite or Phlogophite Mica paper with Silicon resins binder under specific heat and pressure to produce Rigid and flat surface sheets.

It is blister free and generates very low smoke on first heat. Fully resist against high heat with excellent electrical insulation. Suitable for easy die punching or machining as require. It is widely used as a heating barrier as well as electrical insulation for many domestic appliances and various industrial applications.

Availability :-

•Sheet Size- 1000mm x 1200mm ,1000mm x 600mm

•Thickness- 0.1mm to 2mm (+/- 5%)

Characteristics		SMITHERM - SM14	SMITHERM - SP14
MICA TYPE		MUSCOVITE	PHLOGOPHITE
COLOUR		WHITE CREAM	BROWN
MICA CONTENT	% Min	90	90
RESIN CONTENT	% Max	10	10
DENSITY	Gm/cm³	2.0~2.2	2.0~2.2
HEAT RESISTING CONTINUOUS	°C	500	700
HEAT RESISTING INTERMITTENT	°C	800	1000
DIELECTRIC STRENGTH @23°C	KV/mm	>20	>18
EDGE STRENGTH	Kg / 0.1MM	1.3	0.9
TENSILE STRENGTH	N/mm²	140	100
FLEXURAL STRENGTH	N/mm²	180	150
WATER ABSORBATION	%	<1	<1
Data are average results of laboratory tests conducted under standard procedures and are subject to Variation, These do not constitute a warranty or representation for which we assume legal responsibility

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ii) Insulation Mica Sheet :-

SmithLamina Mica Insulation Plate is manufacture using best quality Muscovite or Phlogophite Mica paper with Silicon resin binder under specific heat and pressure to produce Rigid and flat surface sheets.

Mica plates have very good electrical and mechanical properties. Fully resist against high heat with excellent electrical insulation. It is well suited for any machining into any shapes.

It is widely used for Arc Chutes, Bus bar supports, Furnace Lining, Induction furnace, Resistor banks, Insulation of high heating area etc.

Availability :-

• Size - 1000x1200mm

• Thickness - 2mm to 50mm

• Tolerance - +/- 5%

Characteristics		SMITHERM - SM14	SMITHERM - SP14
MICA TYPE		MUSCOVITE	PHLOGOPHITE
COLOUR		WHITE CREAM	BROWN
MICA CONTENT	% Min	90	90
RESIN CONTENT	% Max	10	10
DENSITY	Gm/cm³	2.0~2.2	2.0~2.2
HEAT RESISTING CONTINUOUS	°C	500	700
HEAT RESISTING INTERMITTENT	°C	800	1000
DIELECTRIC STRENGTH @23°C	KV/mm	>20	>18
EDGE STRENGTH	Kg / 0.1MM	1.3	0.9
TENSILE STRENGTH	N/mm²	140	100
FLEXURAL STRENGTH	N/mm²	>180	>150
WEIGHT LOSS @550°C FOR 4 Hrs	%	<1	<1
WATER ABSORBATION	%	<0.5	<0.5
Data are average results of laboratory tests conducted under standard procedures and are subject to Variation, These do not constitute a warranty or representation for which we assume legal responsibility

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iii) Flexible Mica Sheet :-

SmithLamina Flexible Mica Plate is manufacture using best quality Muscovite or Phlogophite Mica paper with
flexible resinous binder under specific heat and pressure to produce flexible and flat surface sheets.

Flexible Mica Plates is a good heat resistant Insulating material, which retains its permanent flexibility at room temperature.

It is widely used for Transformers, Electric furnace, electric home appliances where insulation require in uneven shapes. Characteristics

Characteristics		SMITHERM - FMS	SMITHERM - FPS
MICA TYPE		MUSCOVITE	PHLOGOPHITE
COLOUR		WHITE CREAM	BROWN
SHEET SIZE	MM	1000 X 600MM, 1000X1200MM
THICKNESS	MM	0.15 - 3MM (+/-5%)
MICA CONTENT	% Min	85	85
RESIN CONTENT	% Max	15	15
DENSITY	Gm/cm³	2.1 ~ 2.2	2.1 ~ 2.2
HEAT RESISTING CONTINUOUS	°C	500	800
HEAT RESISTING INTERMITTENT	°C	800	1000
TENSILE STRENGTH	N/mm²	140	100
DIELECTRIC STRENGTH @23°C	KV/mm	>16	>16
TENSILE STRENGTH	Kgf/15mm	>12	>12
WATER ABSORBATION	%	<0.5	<0.5
Data are average results of laboratory tests conducted under standard procedures and are subject to Variation, These do not constitute a warranty or representation for which we assume legal responsibility

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iv) Commutator mica Plate :-

SmithLamina epoxy mica sheet for commutator consist of Muscovite or phlogopite mica paper, impregnated with a specially selected epoxy resin. It performs good electrical properties, mechanical strength, and excellent moisture resistance.

Application :-

This product is a hard, dense mica sheet for use in segments, separators and spacers. It can be sawed, sheared
and punched into intricate shapes using good commercial practice. Because of its superior uniformity, automatic feeding and stacking are possible for cost savings in high speed assembly operations.

Type		SCM-14	SCP-14
Mica Paper		Muscovite	Phlogopite
Bond Content %		≤10	≤10
Density g/cm3		2.1-2.4	2.1-2.4
Thickness Tolerance mm	Average	+0.02	+0.02
Thickness Tolerance mm	Individual	+0.03	+0.03
Compressibility	Ce-elastic %	≤2.5	≤2
Compressibility	Cp-plastic %	≤2.5	≤2
Flexural Strength MPa		>300	>300
Elastic Modulus MPa		>80 000	>70 000
Resistance To Exudation and Displacement °C		200	200
Dielectric Strength KV/mm		>25	>25

Availability :-

• In sheets of 1000x600mm, 1000x1200mm

• In strips and in cut parts, according to drawings.

• Thickness: 0.1 mm - 1.9 mm

Package :-

• Package: Carton

• Size (LXW) :1000x600mm or 1000x1200mm

• Protective package Pallet or Wooden case

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v) Synthetic mica Sheet :-

SmithLamina Synthetic Mica Plate is manufacture using best quality synthetic Mica paper with Silicon resins
binder under specific heat and pressure to produce Rigid and flat surface sheets.

Synthetic mica has high temperature resistance then Muscovite and Phlogophite Mica. Synthetic mica is
extensively applied on products with strict requirement of high dielectrically strength and high temperature
resistance.

Availability :-

Characteristics		Unit	SMITHERM - SS14
MICA TYPE			SYNTHETIC
COLOUR			WHITE
MICA CONTENT		% Min	90
RESIN CONTENT		% Max	10
DENSITY		Gm/cm³	2.2~2.3
HEAT RESISTING CONTINUOUS		°C	900
HEAT RESISTING INTERMITTENT		°C	1100
DIELECTRIC STRENGTH	20�C	KV/mm	>25
	400�C / 1 Hrs		>13
	600�C / 1 Hrs		>10
TENSILE STRENGTH		N/mm²	140
FLEXURAL STRENGTH		N/mm²	180
WATER ABSORBATION		%	<1.5
THERMAL CONDUCTIVITY		W/ m.k	0.3
Data are average results of laboratory tests conducted under standard procedures and are subject to Variation, These do not constitute a warranty or representation for which we assume legal responsibility.