Details
Carbon Bi-Directional Fabric is a woven composite reinforcing material with carbon fibers oriented in two perpendicular directions (0° and 90°), often along the warp (lengthwise) and weft (widthwise) directions, providing a balanced grid-like structure. The fibers are woven into patterns like plain, twill, or satin weaves, resulting in a stable fabric with multidirectional strength.
Unlike unidirectional (UD) fabrics, bidirectional fabrics carry mechanical loads evenly across both axes, making them excellent for applications that need isotropic or quasi-isotropic performance. They are commonly utilized in composite applications that demand strength and stiffness in multiple dimensions.
What are the key features of carbon Bi-directional fabric?
Carbon bi-directional fabrics offer several key features that make them a preferred choice for many industries:
Balanced Strength and Stiffness:
The fibers are aligned at 0° and 90° angles, resulting in a balanced load distribution in both directions and making the fabric suitable for multi-directional stress applications.
Improved Impact Resistance:
The woven structure helps absorb impacts in various directions, providing better durability and resistance to sudden loads.
High Strength-to-Weight Ratio:
Carbon fiber's inherent strength and low density result in a high strength-to-weight ratio, making it excellent for lightweight, high-performance structures.
Drapability:
Bi-directional fabrics are generally easier to handle and drape compared to unidirectional fabrics, making them suitable for complex geometries and molded parts.
Improved Resin Penetration:
The woven nature of the fabric allows for efficient resin infusion and wet-out, resulting in a uniform composite structure.
Versatility:
Bi-directional fabrics can be used in various manufacturing methods, such as hand lay-up, vacuum bagging, resin infusion, and more.
How many types of carbon Bi-directional fabric are there?
There are different types of carbon bi-directional fabrics designed for specific needs, depending on the manufacturing process or required material properties:
Plain Weave Bi-Directional Fabric:
The most common weave design has the fibers crossing over and under each other in both directions.
This type has an excellent mix of mechanical qualities and is commonly utilized in general-purpose applications.
Twill Weave Bi-Directional Fabric:
Features a smoother, more flexible weave in which fiber pairs cross over two or more fibers, resulting in a fabric with improved drapability and surface quality.
Ideal for applications that require a higher level of aesthetics or complicated shaping.
Satin Weave Bi-Directional Fabric:
A less common but high-performance weave that has a smooth surface and better drapeability than the plain or twill weaves.
Offers enhanced resistance to abrasion and is often used in high-performance automotive or aerospace applications.
Hybrid Weave Bi-Directional Fabric:
This fabric blends carbon fibers with other materials, such as glass or aramid fibers, to build composite constructions with specific features, such as improved impact resistance or lower cost.
What are the advantages of carbon Bi-directional fabric?
Carbon bi-directional fabric has several key advantages that make it a go-to material in various high-performance applications:
Multi-Directional Strength:
The fibers' balanced orientation in two directions assures that the fabric can take loads from numerous axes, making it excellent for applications that need multidirectional loading.
High Durability and Impact Resistance:
The woven nature of the fabric improves impact resistance and overall durability, especially in aerospace, automotive, and sporting goods applications.
Improved Molding Capability:
Due to the weave pattern, carbon bi-directional fabrics have good drapability, making them suitable for forming complex shapes or for use in moldings and laminates.
Lightweight yet Strong:
Carbon bi-directional fabrics combine carbon fiber's great strength with a low weight, making them perfect for applications that require weight minimization.
Better Resin Distribution:
The fabric's open, woven structure allows for improved resin infusion and homogeneous wet-out, which improves the composite material's consistency.
Product Parameter：
Parameter | Range/Value |
Areal Weight | 100–800 g/m² |
Tensile Strength | 3,000–5,500 MPa |
Tensile Modulus | 230–350 GPa (standard modulus) |
Fiber Diameter | 5–7 µm |
Thickness per Ply | 0.1–0.6 mm |
Resin Content (Prepreg) | 35–45% by weight |
Cure Temperature (Prepreg) | 120–180°C (depending on resin) |
Glass Transition (Tg) | 120–220°C (resin-dependent) |
Width | 100–1,500 mm (standard rolls) |
Product Specification Table：
MODEL | Fiber Spec. WARP | Fiber Spec. WEFT | Fiber Count, WARP (end/cm) | Fiber Count, WEFT (end/cm) | WEAVE | WEIGHT (g/m2) | THICKNESS (mm) | WIDTH (mm) |
BDF01120P | 1K | 1K | 9 | 9 | Plain | 120 | 0.12 | 100-1500 |
BDF01120T | 1K | 1K | 9 | 9 | 2/2 Twill | 120 | 0.12 | 100-1500 |
BDF01140P | 1K | 1K | 10.5 | 10.5 | Plain | 140 | 0.14 | 100-1500 |
BDF01140T | 1K | 1K | 10.5 | 10.5 | 2/2 Twill | 140 | 0.14 | 100-1500 |
BDF03160P | 3K | 3K | 4 | 4 | Plain | 160 | 0.16 | 100-1500 |
BDF03160T | 3K | 3K | 4 | 4 | 2/2 Twill | 160 | 0.16 | 100-1500 |
BDF03180P | 3K | 3K | 4.5 | 4.5 | Plain | 180 | 0.18 | 100-1500 |
BDF03180T | 3K | 3K | 4.5 | 4.5 | 2/2 Twill | 180 | 0.18 | 100-1500 |
BDF03200P | 3K | 3K | 5 | 5 | Plain | 200 | 0.20 | 100-1500 |
BDF03200T | 3K | 3K | 5 | 5 | 2/2 Twill | 200 | 0.20 | 100-1500 |
BDF03220P | 3K | 3K | 5.5 | 5.5 | Plain | 220 | 0.22 | 100-1500 |
BDF03220T | 3K | 3K | 5.5 | 5.5 | 2/2 Twill | 220 | 0.22 | 100-1500 |
BDF03240P | 3K | 3K | 6 | 6 | Plain | 240 | 0.24 | 100-1500 |
BDF03240T | 3K | 3K | 6 | 6 | 2/2 Twill | 240 | 0.24 | 100-1500 |
BDF03285S52 | 3K | 3K | 7.2 | 7.2 | 5/2 Satin | 285 | 0.29 | 100-1500 |
BDF06280P | 6K | 6K | 3.5 | 3.5 | Plain | 280 | 0.28 | 100-1500 |
BDF06280T | 6K | 6K | 3.5 | 3.5 | 2/2 Twill | 280 | 0.28 | 100-1500 |
BDF06293S52 | 6K | 6K | 6.5 | 6.5 | 5/2 Satin | 293 | 0.33 | 100-1500 |
BDF06320P | 6K | 6K | 4 | 4 | Plain | 320 | 0.32 | 100-1500 |
BDF06320T | 6K | 6K | 4 | 4 | 2/2 Twill | 320 | 0.32 | 100-1500 |
BDF06360P | 6K | 6K | 4.5 | 4.5 | Plain | 360 | 0.36 | 100-1500 |
BDF06360T | 6K | 6K | 1.5 | 1.5 | 2/2 Twill | 360 | 0.36 | 100-1500 |
BDF12320P | 12K | 12K | 2 | 2 | Plain | 320 | 0.32 | 100-1500 |
BDF12320T | 12K | 12K | 2 | 2 | 2/2 Twill | 320 | 0.32 | 100-1500 |
BDF12400P | 12K | 12K | 2.5 | 2.5 | Plain | 400 | 0.40 | 100-1500 |
BDF12400T | 12K | 12K | 2.5 | 2.5 | 2/2 Twill | 400 | 0.40 | 100-1500 |
BDF12480P | 12K | 12K | 3 | 3 | Plain | 480 | 0.48 | 100-1500 |
BDF12480T | 12K | 12K | 3 | 3 | 2/2 Twill | 480 | 0.48 | 100-1500 |
BDF12560P | 12K | 12K | 3.5 | 3.5 | Plain | 560 | 0.56 | 100-1500 |
BDF12560T | 12K | 12K | 3.5 | 3.5 | 2/2 Twill | 560 | 0.56 | 100-1500 |
BDF12640P | 12K | 12K | 4 | 4 | Plain | 640 | 0.64 | 100-1500 |
BDF12640T | 12K | 12K | 4 | 4 | 2/2 Twill | 640 | 0.64 | 100-1500 |
BDF12800P | 12K | 12K | 5 | 5 | Plain | 800 | 0.80 | 100-1500 |
BDF12800T | 12K | 12K | 5 | 5 | 2/2 Twill | 800 | 0.80 | 100-1500 |
What are the applications of carbon Bi-directional fabric?
Carbon bi-directional fabric is widely used across various industries due to its versatility and outstanding mechanical properties:
Aerospace:
Used to produce lightweight, high-strength components for airframes, wings, fuselages, and satellite structures that require multi-axial strength.
Automotive:
Used in performance and luxury automobile parts such as body panels, structural reinforcements, and other components that require high rigidity and low weight.
Wind Energy:
Carbon bi-directional fabrics are used in the manufacturing of wind turbine blades to provide strength, durability, and resistance to cyclic stresses.
Sports Equipment:
Commonly used in high-performance sporting goods such as bicycles, tennis rackets, golf clubs, and skis to provide superior strength and lightweight characteristics.
Marine:
Used in boat hulls, masts, and other marine structures for lightweight yet strong components that are resistant to corrosion and fatigue.
Construction and Infrastructure:
Used in reinforced concrete constructions, bridges, and high-rise buildings to increase strength while reducing weight.
Military and Defense:
Carbon bi-directional fabrics are utilized for lightweight armor systems, vehicle reinforcing, and other defense applications that require multi-directional strength.
How to store and handle carbon Bi-directional fabric?
Proper storage and handling of carbon bi-directional fabric are important for maintaining its quality and performance:
1.Temperature Control:
Store carbon fabric in a cool, dry environment. If it is a prepreg material, it must be kept at low temperatures (typically below -18°C) to prevent premature curing.
2.Avoid UV Exposure:
Carbon fibers are susceptible to ultraviolet (UV) light, which can impair their characteristics. To protect fabrics from sunlight, store them in dark or opaque containers.
3.Humidity Control:
Excess moisture can affect the resin system or cause the fabric to degrade. Store the fabric in a dry area to minimize moisture absorption.
4.Packaging:
Typically, carbon bi-directional fabrics are stored in vacuum-sealed or airtight packaging to protect them from dust, contamination, and moisture.
5.Shelf Life:
Prepreg carbon bi-directional fabrics have a limited shelf life, which depends on the resin system used. Always use the material before its expiration date.
6.Handling:
When handling the cloth, wear clean gloves to avoid contaminating it with oils, dirt, or sweat from your hands. Take care not to wrinkle or damage the cloth while handling.
FAQ
Q: How does carbon bi-directional fabric compare to unidirectional fabric?
A: Carbon bi-directional fabric gives balanced strength in both the warp and weft directions, whereas unidirectional fabric delivers maximum strength in only one axis. Bi-directional textiles are better suited for multi-directional stress applications.
Q: What resin systems can be used with carbon bi-directional fabric?
A: Carbon bi-directional fabric is compatible with several resin systems, including epoxy, polyester, vinyl ester, and other thermosetting resins. Epoxy is most commonly used due to its superior adhesive properties and mechanical performance.
Q: Can carbon unidirectional fabric be used with any resin system?
A: Generally, yes. Most carbon unidirectional fabrics are compatible with epoxy, polyester, vinyl ester, and other common resins. However, always check with the manufacturer for sizing or binder compatibility.
Q: Can carbon bi-directional fabric be used in high-temperature applications?
A: Yes, carbon fiber composites can be used in high-temperature environments, especially when combined with high-temperature resins. However, the resin type will determine the maximum service temperature.
Q: What are the typical mechanical properties of carbon bi-directional fabric composites?
A: The mechanical properties of carbon bidirectional fabric composites differ according on the fiber type, resin system, and lay-up procedure. Typically, they have tensile strengths of 3,000-6,000 MPa and moduli ranging from 200-400 GPa, depending on the materials utilized.
Q: Can carbon bi-directional fabric be used in both hand lay-up and resin infusion processes?
A: Yes, carbon bi-directional fabric is versatile and can be used in both manual hand lay-up and automated resin infusion processes, providing excellent results in both methods.
Q: Can bi-directional fabric replace UD in structural parts?
A: It depends on load direction—UD is better for uniaxial loads, while bi-directional suits multidirectional stresses.
Q: What weave is best for complex shapes?
A: Twill or satin weaves offer better drape than plain weave.
Q: How to prevent resin pooling in heavy weaves?
A: Vacuum bagging can be used to guarantee equal resin distribution and reduce voids.
Q: Can I layer carbon bi-directional cloth with UD fabric?
A: Yes—hybrid layups combine multidirectional strength with uniaxial stiffness.
Q: How to cut bi-directional fabric without fraying?
A: Use sharp scissors, rotary cutters, or laser cutting; tape edges beforehand.
Q: What safety precautions are needed?
A: Wear gloves, masks, and eye protection to avoid fiber irritation and resin exposure.
