ZOLTEK PX30

Designed for use in the most extreme heat applications, ZOLTEK PX30 is an industry leading solution for challenges demanding very high temperature and very harsh chemical resistance properties. As a high purity and high-thermal performance material its various product forms are frequently used for fuel cells, carbon/carbon composites, energy storage battery, and many other specialty applications (outlined in the table below).

Derived from <<ZOLTEK OX products>> that undergo a proprietary high temperature batch carbonization process, ZOLTEK PX30 carbon fibers are PAN-based materials carbonised to >99%. Additionally, all ZOLTEK PX30 carbonized products are free of sizings, and the ZOLTEK in-house system ensures product quality and traceability from raw material through finished product.

FormEnd Use
Woven FabricsAircraft & automotive brakes, clutch plates, gas diffusion layer for fuel cells
Coated Scrim FabricIntumescent coating applications in oil and gas and jet fuel delivery
Rovings and Spun YarnsUsed for carbon/carbon preforms and braided mechanical compression packing & seals
FeltsEnergy storage battery and high temperature, corrosive mist eliminators

Extremely thermally stable, ZOLTEK PX30 woven and knit fabrics are made from 100% ZOLTEK OX spun yarns designed to a specified thickness and areal weight. As a part of our commitment to innovation, ZOLTEK offers considerable versatility in our fabric forms including plain and satin weave constructions, and knit and scrim fabric types. Regardless of form, these fabrics provide superior tensile and interlaminar shear strength properties and easily drape, without wrinkling, particularly in composite materials. Due to the high carbon contents and low oxidation rates of ZOLTEK PX30 Fabrics, are particularly suited for carbon-carbon composites, fuel cell substrates, chemical vapor infiltration or prepreg processing and other thermally demanding applications.

DescriptionConstructionAreal WeightRoll WidthsBinder
Carbonized Woven FabricPlain Weave 115 g/m2
(3.4 oz/yd2)
81 - 88 cm
(32 – 35 in)
None
Carbonized Woven FabricPlain Weave237 g/m2
(7.0 oz/yd2)
109 cm
(43 in)
None
Carbonized Woven Fabric8 Harness Satin Weave 288 g/m2
(8.5 oz/yd2)
84,107 cm
(33, 42 in.)
None
Carbonized Woven FabricSingle Knit Jersey Fabric 7oz 250 g/m2
(7.5 oz/yd2)
56 cm
(22 in)
None
Carbonized SCRIM FabricSCRIM Leno Plain Weave 37 g/m2
(1.3 oz/yd2)
99 cm
(39 in)
Acrylic Latex EVC

ZOLTEK PX30 Woven Carbon Fabrics tailorability results from controlling the yield on rovings and yarns, and allows for a variety of finished composite thicknesses. The spun yarns have many surface fibrils that protrude in various directions at various lengths from the surface. This fiber loft contributes to high cross-ply tensile and interlaminar shear strengths for 2-D composite materials. Contour conformation without wrinkling is another advantage of spun yarn fabrics. ZOLTEK PX30 materials undergo high temperature carbonization process, involving a long temperature soak time, resulting in a very thermally stable and chemically pure fabric with low oxidation rate.

Material OverviewPlain Weave (PW03)Plain Weave (PW06)Satin Weave (SW08)
SIUSSIUSSIUS
Areal Weight115 g/m23.4 oz/yd2237 g/m27.0 oz/yd2288 g/m28.5 oz/yd2
Count (W x F)175 x 175
yarns/10 cm
45 x 45
yarns/in
113 113
yarns/10 cm
29 x 29
yarns/in
160 x 160
yarns/10 cm
38 x 38
yarns/in
Thickness406 microns16 mils673 microns20 mils890 microns35 mils
Standard Widths838 mm33 inch1067 mm42 inch1067 mm42 inch
Roll Length *73 m80 yds36 m40 yds36 m40 yds
Yarn Input2/272/272/102/102/102/10
Electrical Resistivity0.0014 ohm-cm (0.00055 ohm-in)0.0014 ohm-cm (0.00055 ohm-in)0.0014 ohm-cm (0.00055 ohm-in)0.0014 ohm-cm (0.00055 ohm-in)0.0014 ohm-cm (0.00055 ohm-in)0.0014 ohm-cm (0.00055 ohm-in)
Carbon Content99%99%99%99%99%99%
Density1.75 g/cc (0.063 lb/in3)1.75 g/cc (0.063 lb/in3)1.75 g/cc (0.063 lb/in3)1.75 g/cc (0.063 lb/in3)1.75 g/cc (0.063 lb/in3)1.75 g/cc (0.063 lb/in3)
Oxidation Rate1% per hour at 932 °F (500 °C)1% per hour at 932 °F (500 °C)1% per hour at 932 °F (500 °C)1% per hour at 932 °F (500 °C)1% per hour at 932 °F (500 °C)1% per hour at 932 °F (500 °C)
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ZOLTEK PX30 Low-Oxidation Knitted Carbon Fabric is high modulus fiber fabric made from spun yarn. The fabric has a jersey knit construction, which conforms to multiple curvatures while addressing the need of extreme heat end uses. Thermal oxidative and dimensional stabilities are flawlessly obtained during heat treatment and the end-product is an industry leader in thermal protection system solutions.

Material OverviewSIUS
ConstructionSingle Knit JerseySingle Knit Jersey
Areal Weight250 g/m27.5 oz/yd2
Thickness1 mm0.040 in
Standard Widths51 cm20 in
Roll Length (minimum)14.63 m16 yds
Density1.75 g/cc0.063 lb/in3
Carbon Content99%99%
Oxidation Rate1% per hour at 932 °F (500 °C)1% per hour at 932 °F (500 °C)
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ZOLTEK PX30 carbon scrim is a plain leno weave fabric, produced from 100% ZOLTEK OX spun yarns, that undergoes a proprietary high temperature, long carbonization soak process to obtain a high purity (99% carbon) mesh material. The resultant chemically inert fabric exhibits superior thermal stability and a low oxidation rate, that overshadows any other option in the market. More specifically, ZOLTEK PX30 high-purity carbon scrim fabric is a specialized product. It is designed with an open weave construction ideal for applications requiring lightweight secondary reinforcement, such as that used in intumescent coating end uses. The scrim fabric can also be supplied with an FR coated finish for easy handling and installation. In addition, our ZOLTEK PX30 High-Purity Carbon Scrim Fabric is manufactured to the same high quality and high standards as all of the ZOLTEK PX30 woven products.

Material Overview8 x 4 Coated
ConstructionPlain Leno Weave
Yarn Input2/10
Count (W x F)8 x 4
Areal Weight
ZOLTEK OX 135 Scrim Fabric
ZOLTEK PX30 Scrim Fabric
Coated ZOLTEK PX30 Scrim Fabric
2.0 oz/yd2
1.3 oz/yd2
1.9 oz/yd2 Typical
Standard Width*39 inches
Density1.75 g/cc
Carbon Content>99%
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ZOLTEK PX30 milled carbon fiber is specially processed PAN (polyacrylonitrile) based fiber suitable for high-volume applications that require strength and/or electrostatic dissipation. ZOLTEK PX30 high-purity milled fibers are 99+% pure carbon fibers derived from ZOLTEK’s high temperature graphitization process. All ZOLTEK milled carbon fiber products are free of any sizings, and our in-house milling system ensures product quality and traceability from raw material through finished product.

Material OverviewSIUSSIUS
Carbon Content95%95%99%99%
Electrical Resistivity (Volume)0.00155 ohm-cm0.00061 ohm-in0.0014 ohm-cm0.00055 ohm-im
Linear Resistivity0.0761 ohm/cm0.02996 ohm/in0.069 ohm/cm0.02717 ohm/in
Density1.81 g/cc0.065 lb/in³1.75 g/cc0.063 lb/in³
Bulk Density490 g/L30.6 lb/ft³465 g/L (MF150)
350 g/L (MF200)
30.6 lb/ft³ (MF150)
30.6 lb/ft³ (MF150)
Fiber Diameter7.2 μm0.283 mils7.2 μm0.283 mils
Average Fiber Length100 μm (MF150)
150 μm (MF200)
4 mils (MF150)
6 mils (MF200)
100 μm (MF150)
150 μm (MF200)
4 mils (MF150)
6 mils (MF200)
Filament ShapeRoundRoundRoundRound
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Designed with improved handling characteristics in-mind, ZOLTEK PX30 Roving is manufactured using high twist ZOLTEK OX yarns and the proprietary high temperature batch carbonization process characteristic all of ZOLTEK’s high purity ZOLTEK PX30 products. ZOLTEK PX30 Roving is carbonized to >99%. Due to the high carbon contents, low oxidation rate, and performance in extreme heat applications, of this products, it is widely used in the manufacturing of friction clutches and brakes. Additionally, Thick fabrics woven of ZOLTEKPX30 High Twist Roving allow for efficient buildup during fabrication of the carbon composite substructures.

Material OverviewSIUS
Carbon Content99%99%
Density1.75 g/cc0.063 lb/in3
Yield2,015 m/kg1,000 yds/lb
Denier4,465 g/9,000 m4,465 g/9,000 m
Twist DirectionS or ZS or Z
Turns Per Inch1.71.7
Oxidation Rate (% per hour) at 932°F (500°C)1.01.0
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From production to end-use, ZOLTEK PX30 carbonized yarns are synonymous with high-performance. With a minimum carbon content of 99% and a fiber density of 1.75 g/cc, ZOLTEK PX30 yarns provide industry-leading solutions especially when reliability under extreme heat is key. Derived from the same proprietary high temperature batch carbonization process used to manufacture all of ZOLTEK’s high purity ZOLTEK PX30 products, these yarns are characterized by their many surface fibrils in protruding various directions, making them ideally suited for high performance applications including braided carbon/carbon composites.

DescriptionPliesDenier (g/9000m)Tex (g/1000m)YieldPackaging
Carbonized Yarn2 1,700 189 5.76 m/g
(2854 yds/lb)
Conical spools
Maximum diameter = 12 cm (4.75 in)
Height = 15 cm (6 in)
Carbonized Yarn32,5002783.55 m/g
(1758 yds/lb)
Conical spools
Maximum diameter = 12 cm (4.75 in)
Height = 15 cm (6 in)
Carbonized Yarn4 3,500 378 2.59 m/g
(1285 yds/lb)
Conical spools
Maximum diameter = 12 cm (4.75 in)
Height = 15 cm (6 in)
Carbonized Yarn54,4004672.05 m/g
(1016 yds/lb)
Conical spools
Maximum diameter = 12 cm (4.75 in)
Height = 15 cm (6 in)
Carbonized Yarn65,0005561.78 m/g
(884 yds/lb)
Conical spools
Maximum diameter = 12 cm (4.75 in)
Height = 15 cm (6 in)
Carbonized Yarn76,000656 1.51 m/g
(750 yds/lb)
Conical spools
Maximum diameter = 12 cm (4.75 in)
Height = 15 cm (6 in)
Carbonized Yarn108,500933 1.06 m/g
(527 yds/lb)
Conical spools
Maximum diameter = 12 cm (4.75 in)
Height = 15 cm (6 in)
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Recommended Use: High performance applications including carbon/carbon and other refractory composites
Applications: High temperature packings and gaskets, performance for high temperature carbon/carbon and carbon/ceramic composites, specialty applications for reinforcement in polymer-based composites

Applications.

ZOLTEK PX30 Applications

ZOLTEK PX30 carbonized fiber products perform incredibly well in several speciality applications that demand very high temperature and very harsh chemical resistance. The various product forms of ZOLTEK PX30 are uniquely suited for several specific end-uses. However, ZOLTEK PX30 is frequently used for the following, broader, applications: