Silicone Rubber Tear Strength & Tensile Strength Standard Parameters
1. Silicone Rubber Tear Strength
Tear strength means silicone’s resistance to notch expansion under force. Heat-vulcanized solid silicone stays intact under extreme torsional stress after cutting.
Heat-vulcanized solid silicone rubber: 9-55 kN/m
Fluorosilicone rubber: 17.5-46.4 kN/m
Liquid silicone rubber: 11.5-52 kN/m
2. Silicone Rubber Tensile Strength
Tensile strength refers to unit force required to rupture silicone test samples.
Heat-vulcanized solid silicone rubber: 4.0-12.5MPa
Fluorosilicone rubber: 8.7-12.1MPa
Liquid silicone rubber: 3.6-11.0MPa
Other Key Factors to Consider for Mold Silicone
Beyond tensile and tear strength, manufacturers shall check these key factors for stable mold production:
Curing Performance: Optimized curing speed matches mass production with balanced pot life and demolding time.
Low Shrinkage: Ultra-low shrinkage ensures high dimensional accuracy for intricate resin crafts and fine patterns.
Chemical Resistance: Resist resin chemical erosion to avoid mold swelling, cracking and surface damage.
No Oil Precipitation: Premium formula prevents silicone oil bleeding, avoiding product adhesion and surface flaws.
Moderate Viscosity: Easy pouring, fast defoaming and full filling of tiny mold cavities.
Stable Batch Performance: Unified hardness, curing speed and lifespan for continuous bulk manufacturing.
Need more silicone expertise and customized solutions? Contact Jiajinghong Silicone Factory for professional support!
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