Polyester Glass Mat Sheets

TUFNOL materials for engineering 

TUFNOL Polyester Glass Mat Laminated Sheets 
Polyester glass fibre laminate

Glass mat reinforced polyester resin laminated plastic

PGM - Polyester Glass Mat sheets

 

Economical Insulation

TUFNOL Polyester glass mat laminates are produced by combining polyester resin with continuous roving glass mat.  They are a useful group of materials that fall in price and performance between paper and cotton fabric laminates and high performance woven glass types.

 

Two grades are available, offering compliance with NEMA Types GPO-2, NEMA GPO-3 and DIN 7735 Type Hm 2471.

 

Grade PGM/2

An electrical grade with assessed flammability characteristics (UL 94 V-0). Good for cold punching. Colour ivory. NEMA Type GPO-2. Suitable for thermal class F applications.  Available in sheets from 0.8mm to 25mm thick.

 

Grade PGM/3

An electrical grade with assessed flammability characteristics (UL 94 V0) plus excellent arc and track resistance.  Colour red.  NEMA Type GPO-3 and DIN 7735 Type 2471. Suitable for thermal class F applications.  Available in sheets from 0.8mm to 25mm thick.

 

What are polyester glass mat laminates used for?

 

These materials have excellent mechanical and electrical properties and are widely used in applications where good electrical insulation is required up to thermal class F temperatures (155oC).

TYPES AVAILABLE

 

Sheets

 

Grade PGM/2     – colour ivory

Yes

Grade PGM/3     – colour red

Yes

Minimum order quantities may apply.

 

Click here for Polyester Glass Mat sheets STANDARD SIZES

  

SPECIFICATIONS for Polyester glass mat sheets

BRITISH STANDARDS

Current Standards

Grade PGM/2

NEMA GPO-2

Grade PGM/3

NEMA GPO-3

& DIN 7735 Type Hm 2471

PHYSICAL PROPERTIES

TUFNOL RL Epoxy Glass Fabric Tubes

PROPERTY

Grade

PGM/2

TYPICAL RESULT

Grade

PGM/3

TYPICAL RESULT

UNITS

Flexural strength           

130

130

MPa

Flexural modulus

7.8

8.2

GPa

Tensile strength

70

70

MPa

Tensile modulus

4.6

4.0

GPa

Impact strength, Charpy

35

40

kJ/m2

Water absorption

0.22

0.30

mg/cm2

 - 3mm thick

0.30

0.27

%

Dielectric breakdown parallel to laminations

40

40

kV

Perpendicular dielectric strength

9

15

kV/mm

Comparative tracking index            (IEC112)

600

600

-

Flammability category IEC 707 (UL-94)

V0

V0

-

Relative density

1.7

1.8

-

Maximum working temperature**

 

 

 

- continuous

140

140

ºC

- intermittent

155

155

ºC

Thermal classification

Class F

Class F

-

Thermal expansion

2.4

2.4

x10-5/K

Thermal conductivity

0.3

0.3

W/(mK

Tests are to ASTM methods, where applicable.

*Note:  Data on this grade is provisional and is based on a small number of tests.

 

**Users of highly stressed components at temperatures approaching the maximum are recommended to seek further advice from Tufnol Composites Ltd.

 

Machining

Components are produced from TUFNOL Polyester glass mat laminates by machining on standard machine tools using the techniques for machining other TUFNOL Glass reinforced laminates, including the use of carbide or diamond tipped tools, where appropriate.  They can be guillotined and punched up to 4mm thick.

TUFNOL Ltd. have comprehensive facilities for the machining of PGM materials and can economically produce finished components to customers drawings.

 

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A full machining service is available from Tufnol for this and many other engineering plastics and composites.

Tufnol Composites Ltd, Wellhead Lane, Perry Barr, Birmingham B42 2TB, United Kingdom.

Quality Registration BS EN ISO 9001:2000, BS EN 9100:2003 and AS 9100 Reg. No. FM 90942

The information given here is believed to be correct, but completeness and accuracy are not guaranteed. The user shall be fully responsible for determining the suitability of products for the intended use.

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