Basalt fibre


Overview of basalt fibre

Basalt fibre has properties that are far superior to fibreglass. For example, basalt fabric subjected to the flame of a Bunsen burner will redden and could withstand for several hours compared to a few seconds for a fibreglass fabric of the same density. Basalt products resist flame, continuous temperatures of up to 815°C, chemicals (acids and bases), are very good acoustic and electrical insulators and have good mechanical properties. Because basalt remains functional down to -260°C, it can be used for high-temperature as well as cryogenic applications. Basalt fibre products are particularly popular in the automotive sector, as building materials in the form of non-woven needled felts, or as insulation materials for exhaust pipes, for example in the form of sheaths, strips or fabrics. In addition, basalt fibre is the most environmentally friendly high temperature resistant material when it comes to both manufacturing and recycling it. 

Manufacturing 

Basalt fibre is made by the pultrusion of volcanic rocks, melted in blast furnaces. The fibre is drawn, as opposed to extrusion. This process makes it possible to create a continuous fibre, reinforced with a polymer. 

Thermal properties

Basalt fibre products withstand temperatures from -260°C to 815°C and have a thermal conductivity close to that of fibreglass and silica (0.031-0.038 W/m.K). The vitrification temperature of the basalt is 1050°C for a melting temperature of 1450°C.

Mechanical and physical properties

Basalt fibre has better physical and mechanical properties than fibreglass or silica fibre, particularly when it comes to tensile strength (4840 MPa), compression (550,000 psi), elongation at break (3.15%, superior only to silica fibre) and elastic modulus (89 GPa), for a fibre of about 9μm.

Environmental resistance

Basalt fibres are highly resistant to UV rays, chemicals (acids and bases), weather constraints (especially moisture), are rot-proof and remain sterile.

Advantages

  • Good tensile strength (superior to fibreglass)
  • Non-toxic and inert, it produces no gas or smoke
  • Resistant UV, chemicals and remains sterile
  • Excellent dielectric insulator
  • Excellent impact resistance
  • Excellent thermal and acoustic insulation
  • Withstands temperatures from -260°C to 815°C
  • Cheaper than carbon, Kevlar® and fibreglass


Applications of basalt fibre

  • Cryogenics
  • Manufacture of composites and reinforcements
  • Insulation of cables and pipes
  • Ballistics
  • Thermal and dielectric insulation


Basalt fibre products

Needled felts

Made from basalt fibres of 8 to 16 μm, the felts are classified M0 according to European standard EN 13-501-1. They do not burn, do not melt, produce neither smoke nor toxic gases, and are environmentally friendly and recyclable. They are mainly used as electrical and thermal insulators.

Property

Unit

 

Name

 

Basalt fibre needled felts

Number

 

014-0100

014-0110

014-0120

014-0130

Weight

g/m²

480

780

1100

1300

Weight

Kg/m3

120

130

137.5

130

Thickness

mm

4

6

8

10

Length

m

400

400

400

400

Continuous temperature

°C

700

700

700

700

Peak temperature

°C

815

815

815

815


Our sheaths

Manufactured from 8-16 μm basalt fibres, the sheaths are mainly used in the automotive industry or for electro-mechanical applications. They have thermal and mechanical properties superior to those of fibreglass and can be used in the manufacture of composites. They are also used in the insulation of electrical cables and as thermal protection for pipes and exhausts.

Property

Unit

 

Name

 

Basalt fibre sheath

Number

 

207-0350

Diameter

mm

1.5 to 22

Thickness

mm

0.45

Length

m

100-200

Continuous temperature

°C

700

Peak temperature

°C

815


Z-Rock strips

Newtex's Z-Rock® basalt fibre strips are mainly used in the automotive industry for the insulation of exhaust systems. They withstand a continuous temperature of 815°C and a peak temperature of 980°C. 

Manufactured in the US, these strips have comparable properties to ZetexPlus® products, except they are more flexible and have a better rendering, meaning they avoid snagging during installation. They are mainly used in the automotive, aerospace and transportation sectors for cable, pipe and exhaust system insulation.

Property

Unit

 

Name

 

Z-Rock®

B-1050

1.0’’ (100’)

Z-Rock®

B-1050

1.0’’ (50’)

Z-Rock®

B-1050

2.0’’ (100’)

Z-Rock®

B-1050

2.0’’ (50’)

Number

 

1200262

1200263

1200264

1200265

Weight

g/m²

915

915

915

915

Thickness

mm

1.1

1.1

1.1

1.1

Width

mm

25.4

25.4

51

51

Length

m

30.48

15.24

30.48

15.24

Continuous temperature

°C

815

815

815

815

Peak temperature

°C

980

980

980

980


Our fabrics

Made from continuous basalt fibres, the fabrics are used for protective purposes such as fire barriers. They remain flexible and easy to handle, even if they lose their mechanical properties and become rigid under excessive tension. Heavier than carbon, they are still less expensive. Much used in the automotive industry, these fabrics are mainly used for the insulation of exhaust pipes and to protect motor elements. They are also used in the naval and aerospace industries. We offer coated versions, used for fire barriers. Uncoated versions can also be used as moulds in the manufacture of composites.

Property

Unit

 

Name

 

Fabrics

Number

 

020-0010

020-0020

020-0030

020-0040

020-0050

020-0060

Weight

g/m²

115

220

240

350

630

940

Width

mm

1270

1270

1270

1270

1270

1270

Length of roll

m

100

100

100

100

100

50

Continuous temperature

°C

815

815

815

815

815

815

Peak temperature

°C

980

980

980

980

980

980

Weave

 

Plain

Plain

Twill

Satin

Twill

Twill

Comment

 

 

Twill available

 

Other widths available

Other widths available

 

Property

Unit

 

Name

 

Coating fabrics

Number

 

020-0100

020-0110

020-0120

Weight

g/m²

245

365

645

Width

mm

1500

1550

1540

Length of roll

m

50

50

500

Continuous temperature

°C

845

815

815

Peak temperature

°C

980

980

980

Weave

 

Plain

Satin

Twill

Comment

 

Twill available

 

 


Other products available on request with a minimum order of 1000m.

Bande en basalte

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Feutre en fibre de basalte

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Gaine en fibre de basalte

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Tissu 980°C

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