Pars Rubber Laboratory Unit
At Pars Rubber Industries, quality is not just a promotional slogan; it is the most fundamental and vital pillar embedded in every stage of our production, from the selection of raw materials to the final delivery of the product. Our specialized team, utilizing a dedicated laboratory equipped with the most modern and precise testing instruments, subjects every component to the strictest technical controls and inspections based on global standards. This ensures that no defect remains in the performance or durability of our products. This continuous and rigorous monitoring guarantees that our manufactured parts meet customer needs in real-world conditions, even in the harshest industrial environments, providing sustainable and reliable quality.
✅ Cure Rheometry Test
The rubber rheometry test is conducted to analyze the cure kinetics and the evolution of the compound's viscoelastic properties during vulcanization under controlled temperature and strain. It records changes in the material's resistant torque as a function of time, which is directly related to the formation of the cross-linking network. The primary objective is to determine characteristic cure times such as $ts_2$ (scorch time), $t_{90}$ (effective cure time), and minimum ($M_L$) and maximum ($M_H$) torques for production process control. Reference Standards: ASTM D5289 and ISO 6502.
✅ Rubber Hardness Test
This test measures the localized resistance of the compound's surface against penetration by a standard indenter under a specified force (usually 1N). Unlike modulus or tensile strength, hardness is not a fundamental thermodynamic property but a practical indicator of the polymer network's stiffness. Reference Standards: ASTM D2240 (Shore) and ISO 48-2 / ASTM D1415 (IRHD).
✅ Rubber Tensile Test
A fundamental test to investigate the non-linear stress-strain and viscoelastic behavior of the compound under tensile load, providing key data regarding the polymer network structure. This test determines tensile strength, elongation at break, and tensile moduli at specific strains to compare formulations and ensure quality control. Reference Standards: ISO 37 and ASTM D412.
✅ Tear Strength Test
Conducted to evaluate a rubber's resistance to crack propagation from an existing discontinuity, examining material behavior under stress concentration. This test indicates how stable the compound is against cuts, scratches, and localized defects. Reference Standards: ISO 34-1 and ASTM D624.
✅ Abrasion Resistance Test
Used to measure the rubber's resistance to material loss caused by friction and repeated mechanical contact; a key indicator of the part's service durability. This test demonstrates the impact of elastomer type, filler, and cross-link density on surface degradation. Reference Standards: ISO 4649 and ASTM D5963.
✅ Compression Set Test
Evaluates the rubber's ability to retain its elastic properties after a constant compressive force is applied at a specific time and temperature. It indicates the amount of permanent deformation, which is directly linked to the stability of the cured network and resistance to creep and stress relaxation. Reference Standards: ISO 815-1 and ASTM D395.
✅ Rubber Compound Formulation Design
Formulation design is an engineering process to create a targeted balance between mechanical properties, processability, and durability in service conditions. It is based on controlling the polymer network structure through the selection of elastomers, fillers, and curing systems. While there is no single standard for design, it is performed based on standards such as ASTM D3182, ASTM D3184, and ISO 2393.
