Product description

Brand KAIER DE, Woven Glass Fiber Prepreg

Fiber arrangement：

Unidirectional glass fiber prepreg: Single fiber direction: The fibers are basically arranged in one direction in the prepreg, and all fibers are distributed in parallel along the same direction. This makes the material have extremely high strength and stiffness in this specific direction. For example, when making structures such as aircraft wings and wind turbine blades, unidirectional glass fiber prepregs can be laid in key parts according to the direction of force to give full play to its excellent performance in a specific direction.
Strong directionality: Due to the unidirectional arrangement of fibers, the mechanical properties of unidirectional glass fiber prepregs have strong directionality. In the fiber direction, it can withstand huge tensile stress, but in the direction perpendicular to the fiber, the performance is relatively weak. For example, when subjected to lateral forces, unidirectional prepregs may be prone to delamination or breakage.

Glass fiber fabric prepreg:

Fiber interlaced arrangement: Glass fibers exist in the form of fabrics, and the fibers are interlaced to form different weaving structures, such as plain weave, twill, satin, etc. This weaving structure allows the fibers to be distributed in multiple directions, so that the material has certain strength and stiffness in different directions. For example, when making some structural parts that need to withstand multi-directional stress, glass fiber fabric prepreg can better adapt to complex stress conditions.
Relatively small anisotropy: Compared with unidirectional prepreg, glass fiber fabric prepreg has smaller anisotropy. Although the performance in different directions will still vary, it is not as extreme as unidirectional prepreg. This makes fabric prepreg advantageous in some applications that require more balanced isotropic performance.

Mechanical properties：

Unidirectional glass fiber prepreg:
High strength and high modulus: In the fiber direction, unidirectional glass fiber prepreg has very high tensile strength and elastic modulus. This allows it to withstand large tension and stress, and is suitable for structural parts with extremely high strength requirements. For example, in the aerospace field, unidirectional prepreg is often used to manufacture the main load-bearing structural parts of aircraft, such as fuselage frames, wing beams, etc.
Low lateral performance: However, in the direction perpendicular to the fiber, the strength and stiffness of unidirectional prepreg are lower. This is because the fiber is less distributed in this direction and the bonding effect of the resin is relatively weak. Therefore, when designing and using unidirectional prepregs, special attention should be paid to avoid excessive lateral force to avoid material damage.
Glass fiber fabric prepreg:

Multi-directional performance balance: The performance of glass fiber fabric prepreg in different directions is relatively balanced. Due to the interwoven structure of the fibers, it can disperse stress in multiple directions, thus having good shear, torsion and impact resistance. For example, in automobile manufacturing, fabric prepreg can be used to make body structural parts that can withstand collision forces and vibrations from different directions.
Moderate strength and modulus: Although the strength and modulus of fabric prepreg may not be as high as those of unidirectional prepreg in the fiber direction, it can provide relatively reliable mechanical properties as a whole. At the same time, fabric prepreg has good flexibility, is easy to process and form, and is suitable for the production of complex-shaped structural parts.

 

Difficulty of molding process：

Unidirectional glass fiber prepreg:
High layering requirements: Since the fiber direction of unidirectional prepreg is single, the fiber laying direction and angle need to be precisely controlled during the molding process to ensure that the performance of the material can be fully utilized. This usually requires the use of professional laying equipment and technology, and requires high skills of the operator. For example, when making large composite structural parts, multiple layers of unidirectional prepreg need to be laid in a specific direction in sequence. A slight deviation may affect the performance of the final product.
Complex tooling: In order to ensure the stability of the fiber direction of unidirectional prepreg during the molding process, complex tooling fixtures are usually required. These tooling fixtures must not only be able to fix the position of the prepreg, but also be able to withstand the pressure and temperature during the molding process to ensure that the material does not deform or shift during the curing process.

Glass fiber fabric prepreg:

Laying is relatively easy: The fiber interlaced structure of glass fiber fabric prepreg makes it relatively easy to operate during the laying process. Since the fibers are distributed in multiple directions, the fiber direction does not need to be strictly controlled like unidirectional prepreg, so a simpler laying method can be used. For example, when making composite products by hand, fabric prepreg is easier to lay and adjust, which is suitable for small-scale production and personalized customization.

Simple tooling: Fabric prepreg has relatively low tooling requirements during the molding process. Due to its small anisotropy, deformation caused by inconsistent fiber directions is not likely to occur during the curing process. Therefore, simpler fixtures can be used, reducing production costs and process difficulty.

Benefits：

• High tensile strength and elastic modulus

• Good flexibility, easy to process and form

• Good shear, torsion and impact resistance

Specifications：

Service:

• Sample

• Small batch trial orders can be accepted in the early stage

• Product Usage Guide

• Cost accounting and stable supply capability