Epoxy Glass Laminates in Flat Plates

Epoxy Glass Laminates in Flat Plates 2017-07-09T21:34:06+00:00

Epoxy Glass Laminates in Flat Plates

This material is made up of fiberglass supports in the form of cloth or mats, strengthened at higher temperatures and pressures to form solid and tough plates with high rigidity. This resistance depends both on the relative amount of glass present in the laminate and on the orientation of fibers, while chemical and electrical content depends on the type of resin chosen.

All of these characteristics are dealt with in standard ASTM D-709 standard. Our materials comply with its grades and descriptive characteristics.

GRADE

MATERIAL

CHARACTERISTICS

G – 10

Epoxy Glass Cloth

Good insulating rigidity, dielectric losses under dry or humid conditions.

G -11

Epoxy Glass Cloth

Similar G – 10 properties but better rigidity to high temperature.

FR – 4

Flame Resistant Epoxy Glass Cloth

Similar G – 10 properties but flame resistance.

FR -5

Flame Resistant Epoxy Glass Cloth

Similar G – 11 properties with flame resistance.

They have high rigidity with a very high weight-resistance ratio, good resistivity and surface strength.

The most common applications are medium and high voltage rotation machines such as slot closure wedges, terminal plates, insulating supports and in industry in general, where high dynamic values are required.

It is manufactured in 0.3 to 50-mm-thick plates, measuring approximately 1000 x 1600.

Tubes: circular, winding tubes. Consult about diameters and length.

Bars: From 6-mm diameter on; pultrussion method.

Chemical Resístance Chart

Composite

%

ºC

Transformer oil

100

110

Acetic acid

10

70

Acetic acid

50

50

Fatty acids

100

110

Citric acid

100

100

Nitric acid

5

50

Phosphoric acid

80

90

Sulfuric acid

25

90

Sulfuric acid

50

70

Tanic acid

100

90

Methanol

100

20

Ethanol

100

20

Aqua ammonia

5

60

Calcium hydroxide

25

80

Sodium hydroxide

10

50

Sodium hydroxide

25

60

Hydrogen peroxide

30

70

Sodium hypochlorite

15

110

Carbon monoxide

– –

100

Sodium bicarbonate

100

100

Acetic acid*

100

100

Sodium cyanide

100

100

Sodium phosphate

100

100

Potassium nitrate

100

100

Potassium permanganate

100

100

Zinc chloride

100

100

Properties of Epoxy Glass Laminates

Properties

Unit

G – 10

FR – 4

G -11

FR -5

Felt or Mat

Density

G/cm3

1.80

1.80

1.80

1.80

1.78

Tensile strength

Kg/cm2

3300

3300

3600

3500

1600

Flexural strength

Kg/cm2

3500

3500

3500

3500

1800

Compression strength

Kg/cm2

3900

3900

3900

3900

2200

Impact strength

Kg cm/cm

50 – 600

50 – 60

70 – 80

70 – 80

70

Module of elasticity

Kg/cm x 103

190

190

200

200

180

Dielectric constant

—–

5.5

5.5

5.5

5.5

4.8

Power factor

—–

0.025

0.035

0.025

0.35

0.025

Humidity absorption

%

0.3

0.3

0.3

0.4

0.4

Dielectric strength

kv/mm

11 – 14

12

12 – 14

12 – 14

11 – 12

Resistance to flame

seg*

20

20

Temperature range

ºC

160

160

160

160

160

Thickness and Tolerance Chart

Nominal Thickness (mm) Tolerance (mm) Nominal Thickness (mm) Tolerance (mm)
0.5 +- 0.03 7 +- 0.30
0.6 +- 0.03 7.5 +- 0.30
0.7 +- 0.05 8 +- 0.30
0.8 +- 0.05 9 +- 0.30
0.9 +- 0.07 10 +- 0.40
1.0 +- 0.10 11 +- 0.40
1.5 +- 0.10 12 +- 0.40
2.0 +- 0.12 13 +- 0.40
2.5 +- 0.12 14 +- 0.40
3.0 +- 0.15 15 +- 0.50
3.5 +- 0.15 16 +- 0.50
4.0 +- 0.15 17 +- 0.50
4.5 +- 0.15 18 +- 0.50
5.0 +- 0.20 19 +- 0.50
5.5 +- 0.20 20 +- 0.50
6.0 +- 0.20 21 +- 0.50
6.5 +- 0.20 22 +- 0.50

For thickness greater than the ones mentioned in the chart above, tolerance increases at a arte of 0.1 mm per 8 mm of increment of laminate thickness.

It is manufactured in maximum measurements of 1600 x 950mm.