TPR Material

The Thermo-Plastic-Rubber material is a thermoplastic rubber material. It is a kind of thermoplastic soft rubber compound which has rubber elasticity and does not need vulcanization and can be directly processed (such as injection molding, extrusion, blow molding, etc.).
The TPR material is based on thermoplastic styrene-butadiene rubber (such as SBS, SEBS), adding resin (such as PP, PS), filler, plasticizer and other functional additives blending modified materials.

The color is transparent or the white particles; the shape is particles, usually with spherical particles, ellipsoids, and thin round bars, the surface is bright and has good reflective performance.

• Rubber resilience and good wear resistance, excellent slip resistance, and shock absorption performance, TPR material is superior to rubber in softness and comfort, but the tensile strength, fatigue resistance and mechanical properties of the material are not as good as vulcanized rubber.
• The temperature range of use is -45~90°C. Generally speaking, the TPR material is based on SBS substrate, and its chemical properties are as follows: weather resistance, aging resistance, temperature resistance 70~75°C. If aging resistance is required, temperature resistance For good materials, the modified material of SEBS substrate can be selected.
• Hardness characteristics, TPR material can adjust its hardness at Shore hardness of 5~100 degrees, and the modified material with SEBS as the substrate can be adjusted to lower hardness.
• Processing characteristics, TPR material has good bonding performance with certain glues, inks, etc., and has good oil-jet screen printing processability.
• Environmental protection characteristics, TPR material as environmental soft rubber, the main hazardous substances such as plasticizer phthalate Phthalate, nonylphenol NP, polycyclic aromatic hydrocarbon PAHs detection, in line with ROHS, REACH, EN71-3, ASTMF963 environmental protection Testing standards.

TPR materials are widely used in dairy products, adult products, hardware tools, luggage wheels, sports equipment, toy products, auto parts, medical products, wire and cable, electronic appliances, communication instruments, and shoe products. Among them, the shoe material and toy industry are mainly used in the application of TSR for SBS substrates. The modified materials based on SEBS are mainly used for aging resistance, weather resistance, the high tensile strength of materials and materials, and low hardness (low Product application at Shore Hardness 5 degrees).

Both TPR and PVC are soft materials with rubber elasticity, which are difficult to identify by appearance and hand. It is more intuitive and easy to distinguish by burning.

• Look at the burning odor.
  TPR burns with a fragrant taste and the taste is not unpleasant. PVC burns with a smell of chlorine and is unpleasant.
• Look at the flame color.
  When burning, the color of the flame root is green, and the color of the blue is TPR.
• Flame retardant grade (refers to the material without flame retardant)
  The flame retardant grade of PVC is UL94-V2, which has self-extinguishing property, ignition combustion, and the flame is generally extinguished after the ignition source is evacuated;
  The TPR flame retardant grade is UL94-HB, which burns in case of fire and does not extinguish after being burned from the fire.