X3016A+B is a two-component cast polyurethane elastomer system formulated with MDI-terminated polyester prepolymer, integrated polyol curing agent and catalyst, customized to produce Shore 70A elastomers with balanced processing friendliness and premium mechanical performance. Its core strengths are summarized as below:
1. Outstanding Comprehensive Mechanical Properties
The finished elastomer delivers industry-leading physical indicators that outperform conventional rubber and many standard PU grades under heavy-duty working conditions:
Ultra-high tensile strength up to 41 MPa, with breaking elongation reaching 580%, combining high toughness and flexible stretchability;
Exceptional tear resistance of 80 KN/m, effectively resisting cut and crack propagation under dynamic friction and impact loads;
Superior wear resistance with only 22 mm³ DIN abrasion loss, extending service life for high-friction components;
Stable modulus performance: 3.7 MPa at 100% strain and 6 MPa at 300% strain, offering reliable load-bearing capacity;
Moderate rebound rate of 45%, achieving excellent vibration and shock absorption effect for dynamic equipment parts.
2. Stable & Controllable Processing Performance
This two-part system features standardized heating, mixing and curing procedures, supporting stable mass casting production:
Clear reactivity window: 5 min gel time and 35 min demolding time, easy to arrange continuous casting workflow;
Standardized curing protocol: Post-vulcanization at 90°C for 16 h fully unlocks the material's theoretical mechanical limits, eliminating performance fluctuation risks caused by insufficient curing;
Separated preheating parameters for A and B components match their respective viscosity characteristics. X3016A is transparent low-viscosity liquid at heating temperature without extra homogenization, while solid X3016B only needs full stirring after melting to avoid stratification defects;
Both components require vacuum degassing to manufacture void-free finished parts with consistent hardness and uniform internal structure.
3. Long Shelf Life & Convenient Storage
Sealed drums enjoy extended storage stability under mild ambient conditions (below 30°C), lowering inventory management costs:
X3016A prepolymer retains stable NCO content for 6 months in sealed packaging;
X3016B polyol curing agent maintains uniform composition for up to 12 months without premature curing or performance degradation;
Low storage temperature requirement avoids energy consumption from constant heating storage compared with high-temperature sensitive PU systems.
4. Formulation Integrity & Easy Operation
X3016B is pre-blended with curing agent and catalyst, no extra auxiliary chemicals needed on-site:
Fixed mixing ratio (X3016A: 100 / X3016B: 141.34) removes formula adjustment errors by operators;
Only simple electric stirring is required for molten Component B before feeding to casting machines, with straightforward operation steps and low technical threshold for production staff;
Standard 20kg/drum packaging facilitates transportation, weighing and feeding for medium and small-scale casting workshops.
5. Reliable MDI-Polyester Base Material Advantages
As an MDI ester-based PU elastomer, the material inherits the inherent merits of polyester PU: excellent oil, solvent and chemical resistance, stable dimensional stability under long-term dynamic loads, and strong resistance to heat accumulation during continuous friction. It perfectly fits rollers, wear liners, shock-absorbing pads and other industrial components demanding high strength and abrasion resistance.
6. Consistent Hardness Output
The precisely matched prepolymer and curing agent system guarantees stable Shore 70A hardness across batches when processed per specified heating, mixing and vulcanization standards, avoiding hardness deviation induced by uneven mixing, improper heating or mismatched dosing.
Closing Note
All above data are typical reference values. X3016 two-component cast elastomer system balances easy industrial processing and top-tier mechanical durability, serving as a cost-effective high-performance solution for heavy-wear industrial elastomer parts.