Hello everyone, I’m from Annat. Today, let’s explore Calcium Sulfate Whisker—a high-performance additive revolutionizing Brake Pads Friction Materials.

First, what is it? Calcium Sulfate Whisker is a single-crystal fiber with a unique needle-like structure. Its core technical parameters set it apart: the aspect ratio ranges from 20:1 to 80:1, tensile strength reaches 1500-2000 MPa, and Mohs hardness is 3.0-3.5. These properties make it an ideal reinforcement for Brake Pads Formula.

Brake Pads Calcium Sulfate Whisker

Brake Pads Calcium Sulfate Whisker

In brake pad applications, its advantages are remarkable.

1. Superior Reinforcement: Its high aspect ratio enables uniform dispersion in the matrix, boosting the brake pad’s flexural strength by 30-50% compared to traditional fillers. This reduces cracking during heavy braking.

Brake Linings Calcium Sulfate Whisker

Brake Linings Calcium Sulfate Whisker

2. Stable Friction Performance: With a stable friction coefficient of 0.35-0.45 across temperatures (200-400°C), it avoids “friction fade” at high temps and “cold bite” at low temps, ensuring consistent braking.

3. Low Wear Rate: The whisker’s hard yet tough structure lowers the pad’s wear rate to ≤0.8 cm³/(MJ), extending service life by 20-30% and cutting replacement frequency.

Car Brake Pads NAO(Non Asbestos Organic)Formula

Car Brake Pads NAO (Non Asbestos Organic) Formula

4. Eco-Friendliness: Unlike asbestos or metal fibers, it produces minimal dust during use. Tests show particulate emissions are reduced by over 40%, aligning with global environmental standards.

For Annat, integrating Calcium Sulfate Whisker into Brake Pads Materials means delivering safer, longer-lasting, and greener products. It’s not just an additive—it’s a cornerstone of next-gen brake technology.

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