In the realm of friction and sealing materials, Technora serves not as the primary matrix material, but rather as a reinforcing fiber or filler. Its widespread adoption is primarily attributed to the following key advantages:
Exceptional Heat Resistance: Aramid possesses a high glass transition temperature; it can withstand continuous operating temperatures of 180–200°C and tolerate even higher peak temperatures for short durations—a critical attribute for brake pads, which generate intense heat during high-speed braking.
High Strength and Modulus: The fibers themselves exhibit extremely high tensile strength, effectively reinforcing the structural integrity of composite materials and preventing fragmentation or deformation under high-pressure conditions.
Superior Abrasion Resistance: The fibers are exceptionally tough, significantly extending the service life of friction materials.
Environmental Friendliness and Asbestos Replacement: This was the primary driving force behind its initial entry into this field. Following the ban on asbestos due to its carcinogenic properties, aramid emerged as one of the most ideal substitute materials.
Stable Friction Performance: Aramid helps maintain the stability of the friction coefficient across varying temperatures, thereby mitigating the phenomenon known as "brake fade."
Vibration Damping and Noise Reduction: Aramid fibers possess excellent toughness and damping characteristics, enabling them to effectively absorb vibrations and reduce the noise generated during braking (specifically, minimizing "brake squeal").
Gaskets and Seals
Technora is utilized in the manufacture of various gaskets and seals capable of withstanding high temperatures and pressures—including cylinder head gaskets and exhaust manifold gaskets. Its key advantages include:
Sealing Conformity: Aramid fibers possess excellent resilience and flexibility; they maintain effective sealing performance even amidst fluctuations in pressure and temperature, effectively compensating for small surface irregularities at the mating interface.Chemical Resistance: Exhibits strong resistance to common automotive fluids and chemicals, such as oils and coolants
Creep Resistance: Resists permanent deformation under prolonged pressure, thereby preventing seal failure.
Braided Packing
Used for the dynamic sealing of equipment involving rotational or reciprocating motion, such as pumps and valves. Technora-reinforced packing is characterized by its high tensile strength, abrasion resistance, and chemical inertness.
In the realm of friction and sealing materials, Technora aramid serves a dual role: acting as a "high-performance reinforcing skeleton" and a "multifunctional modifier." It has successfully replaced hazardous asbestos, offering critical material solutions for modern braking and sealing products that demand high performance, superior comfort, and extended service life—thanks to its unique combination of properties, including heat resistance, high strength, abrasion resistance, and vibration/noise damping capabilities. Whether found within the brake pads of the cars we drive daily or the seals of heavy-duty industrial machinery, the contribution of Technora fibers is often present.
