It is understood that polyolefin elastomer (POE) is white granular. It is a high-performance polyolefin that becomes rubber elastic at room temperature. It has low density and It has the characteristics of narrow molecular weight distribution, large bending, high low-temperature impact resistance, easy processing, low glass catalytic temperature, and reusability. These characteristics make it have good tolerance for inorganic fillers, good resilience and flexibility, and its hardness is very low. It is widely used in the field of modified plastics, mainly used for modified and toughened PP, PE and PA are used in the automotive industry to make bumpers, fenders, steering wheels, pads, etc.
The principle and content of polyolefin elastomer (POE) to increase the impact tensile strength of products:
As the POE content increases, the impact strength of the system increases And the elongation at break is greatly improved. It can be seen that POE has an excellent increasing effect on PP and has good compatibility with PP and activated calcium carbonate. This is because of the molecular weight distribution of POE. In the molecular structure, the lateral octyl group is longer than the lateral ethyl group, which can form connecting points in the molecular structure and play a connecting and buffering role between the components, allowing the system to disperse and buffer the impact when it is impacted. The effect of energy can reduce the chance of silver cracks developing into cracks due to stress, thus improving the impact strength of the system. When the system is subjected to tension, the network structure formed by these connecting points of Shantin can undergo relatively large deformation. Therefore, the elongation at break of the system increases significantly. When the content of POE increases, the tensile strength, The flexural strength and flexural modulus have decreased, which is determined by the properties of POE itself, so the POE content should be controlled below 20%.
The relationship between POE content and melt index. After adding POE, the melt index of the system increases. POE itself has good fluidity, and its addition also improves the fluidity of the entire system. When the POE content exceeds 15 parts, the melt index of the system does not change. If you want to continue to improve the fluidity of the system, you cannot completely improve the fluidity of the system. Depends on POE.
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