The difference between tpr and BR rubber in the caster industry is all-encompassing, for those who have not been in contact with the network is really difficult to distinguish, today from the theory combined with the case, for friends to break down the difference between tpr and BR rubber in depth.
tpr is the abbreviation of Thermo-Plastic-Rubber material, we can refer to it as thermoplastic rubber material. It is a thermoplastic soft rubber material with elasticity without vulcanization, and can be directly processed and molded (such as injection molding, extrusion, blow molding, etc.).
1, the use of temperature range -45-90 ℃, usually said tpr material is based on SBS substrate, its chemical properties are as follows: marble resistance, aging resistance in general, temperature resistance 70-75 ℃. If you need good aging resistance temperature resistance materials, you can choose the SEBS base material modified materials.
2, BR rubber resilience and good abrasion resistance, anti-slip and shock absorption performance is excellent, tpr material soft and comfortable to be superior to rubber, but the material tensile strength, fatigue resistance and mechanical properties are not as good as vulcanized rubber.
3, environmental characteristics, tpr material as an environmentally friendly soft rubber, the main hazardous substances such as plasticizers phthalates Phthalate, nonylphenol NP, PAHs PAHs detection, in line with ROHS, REACH, EN71-3, ASTMF963 environmental protection testing standards.
4, hardness characteristics, tpr material can be adjusted in the Shore hardness 5-100 degrees of its hardness, SEBS-based modified materials can be adjusted to a lower hardness.
BR rubber is a highly elastic polymer material with reversible deformation, elastic at room temperature, can produce large deformation under the action of a small external force, and can restore the original state after removing the external force. Rubber belongs to the completely amorphous polymer, its glass transition temperature (T g) is low, the molecular weight is often very large, more than hundreds of thousands.
Look at the difference between TPR casters and rubber casters:
There are many materials for the wheel surface of casters, such as TPU casters, PP casters, TPR casters, PU casters, TPE casters, nylon casters, rubber casters and so on.
1, BR rubber casters are softer and quieter than TPR casters.
2, compared with the cost, rubber can not be recycled, TPR can be recycled, TPR casters cost less than BR rubber casters.
4, from the point of view of environmental protection, TPR is a new environmentally friendly material, BR rubber is not environmentally friendly.
Post time: May-13-2024