HUAYE-301 Repair Adhesive
 

High-Strength Rubber Repair | 3-Component System | Tested & Certified | Mfr. Huaye Transportation Machinery Sales Center

Product Overview

HUAYE-301 is a professional-grade, three-component rubber repair adhesive designed for rapid restoration of damaged conveyor belt surfaces. With wear resistance 2-3x that of standard conveyor belt compounds and certified mechanical performance, it delivers long-lasting repairs that minimize downtime in mining, port, power generation, and bulk-material handling operations.

Certified Performance Data (Batch 2-6)

Test Item	Unit	Requirement	Measured	Result	Industrial Significance
Tensile Strength	MPa	≥ 25	30	PASS	Ensures the repair zone withstands dynamic tension and material impacts.
Peel Strength	N/mm	≥ 10	13	PASS	Provides ultra-strong bonding to substrate; avoids edge peeling or delamination.
Elongation at Break	%	≥ 400	440	PASS	High flexibility; flexes synchronously around pulleys without cracking.
Right-Angle Tear Strength	kN/m	≥ 60	75	PASS	Strongly resists tearing and gouging from sharp bulk materials.
Hardness (Shore A)	-	70 - 80	76	PASS	Matches original belt hardness perfectly to balance wear and flexibility.

Curing Profile (At 25°C)

• Pot Life: 5 - 8 minutes (Std. 7 min. Must apply immediately after mixing)
• Light Load Time: 2 hours (Allows belt to run empty or with light load)
• Full Load Time: 4 hours (Fully cured and ready for maximum heavy-duty tonnage)

Packaging & Components

Component	Description	Net Weight	Role
Component A (Main Adhesive)	Metal can	440 g	Base resin
Component B (Hardener)	Small bottle	22 g	Curing agent (1/20 of Component A by weight)
Component C (Primer)	Small bottle + powder	-	Surface primer for rubber activation

Usage Instructions (4-Step Process)

1. Grinding: Use a tungsten steel grinding disc to thoroughly roughen the damaged rubber surface of the conveyor belt. Avoid belt discoloration, brightening, or burning the rubber substrate.
2. Surface Treatment: Pour the powder from the cap of the Component C (primer) bottle into the liquid bottle, and shake until fully dissolved. Apply the mixed primer to the treated rubber surface and let it dry completely for 15 minutes.
3. Mixing: Mix Component A and Component B strictly in a 20:1 ratio by weight. Stir thoroughly within 1 minute, and apply immediately within its 5-8 minute pot life window. Prepare only the quantity needed immediately.
4. Application: Spread the mixed adhesive onto the target zone with a rubber scraper or a short-bristle brush. Keep the single coating thickness within 2 mm. For deep cuts, apply in multiple sequential layers.

Important Handling, Storage & Precautions

• Store in a sealed container in a cool, dry location away from heat sources and direct sunlight.
• Ensure adequate ventilation at the work site during mixing and application.
• Low Temperature Warning: When ambient temperature drops below 15°C (59°F), the chemical curing mechanism decelerates. To accelerate curing, you can apply mild, even external heating using a heat gun or an infrared lamp after application. Ensure the heating zone temperature never exceeds 40°C (104°F) to avoid thermal degradation of the rubber substrate.
• Keep out of reach of children.
• Shelf Life: 12 months from the date of manufacture when stored in sealed, dry conditions at room temperature.

Typical Applications

• Surface gouges, cuts, and deep scratches on EP (polyester-nylon), steel-cord, and rubber conveyor belts.
• Large-area rubber surface erosion caused by highly abrasive bulk materials (coal, ore, sand, gravel, clinker).
• Impact damage and punctures at loading chutes in mining and quarrying operations.
• Edge cracking and delamination repair on belt sidewalls.

Huaye Transportation Machinery Sales Center

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