Introduction

R-5660-H series of Rigid Mica Plate is mica laminates designed for providing outstanding electrical insulation at high temperature, which consist of approximately 90 % Muscovite (or Phlogopite) and 10% high temperature resistant silicone resin.

R-5660-H series has acquired UL94V-0 approval with the file No.E231452, TUV approval on environmental safe (the file No. Z05811263 ), SGS-RoHS approval with the file No. SH6148278/CHEM, and has been authorized for use in contact with food products (certificate from the FDA with the file No. RJSSZ060586FDA).

R-5660-H series has two species:
    •  R-5660-H1: Muscovite Rigid Mica Plate , Silver color, Heat resistance: 500 ℃ / 932 °F (In constant operation), 750 ℃ / 1382 °F (in intermit t ent operation) .
    •  R-5660-H3: Phlogopite Rigid Mica Plate , Golden/Amber color, Heat resistance: 750 ℃ / 1382 °F (In constant operation), 1000 ℃ / 1832°F (in intermittent operation) .

Properties

•  Excellent resistance to heat up to 1000°C . R-5660-H series have unique temperature resistance, the maximum working temperature for the Muscovite Mica Plate and Phlogopite Mica Plate are approximately 500 ℃ and 750 ℃ respectively, Peak work temperature are 750 ℃ and 1000 ℃ respectively.
•  Excellent electrical insulation. R-5660-H series have excellent dielectric properties, the maximum dielectric is more than 20KV/mm.
•  Excellent punchability. R-5660-H series have good flexural strength and can be cut very precisely using die-stamping.
•  Environmentally safe. R-5660-H series generate very little smoke even at excessive temperatures.

Availability

•  Size: Sheets of 1000 x 600 mm 1000 x 1200 mm 1000 x 2400mm
             Strips and punched parts according to drawings for thickness 0, 1 to 2 , 0 mm .
•  Thickness: 0, 1mm , 0.15mm , 0.2mm , 0.25mm , 0.3mm , …… 5.0mm .

Characteristics

No.

Item

Unit

R-5660-H1

R-5660-H3

Test Procedure

1

Mica content

%

ca.92

ca.92

IEC 371-2

2

Bond content

%

ca.8

ca.8

IEC 371-2

3

Density

g/cm2

1.8-2.45

1.8-2.45

IEC 371-2

4

Heat Resistant

continuous services

℃

500

700

intermittent services

℃

800

1000

5

Heat loss at 500 ℃

%

<1

<1

IEC 371-2

Heat loss at 700 ℃

%

<2

<2

IEC 371-2

6

Flexural strength

N/mm²

>200

>200

GB/T5019

7

Water absorption

%

<1

<1

GB/T5019

8

Dielectric strength

KV/mm

>20

>20

IEC 243

9

Insulation resistance 23 ℃

Ω.cm

10¹⁷

10¹⁷

IEC93

Insulation resistance 500 ℃

Ω.cm

10¹²

10¹²

IEC93

10

Flame Resistance

94V0

94V0

UL94

11

Smoking test

s

<4

<4

in house

Storage

Application

R-5660-H series are in the form of very rigid laminated plates. They retain their properties even after being exposed to heat. They are used for the following applications:

• D omestic application: clothes irons, hair dr y er s , toaster, kettles, cooking appliances, microwave oven, air heater…
• I ndustrial heating applications: wound heater elements, cylindrical resistance heaters , heating elements for extrusion machines, chemical-engineering and electric appliances, electric sterilized cabinet, and in steel or metallurgy industry for intermediate frequency furnace, arc furnace, etc.