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Transparent modified polypropylene, the domestic and foreign scholars have done a lot of research, but the modified method is mainly focused on the use of transparent nucleating agent. Blend Antireflective PP, requires not only having a good compatibility between the materials, and require similar refractive index, so this method has serious limitations, less research reports, particularly the blend Antireflection Mechanism more rare. In recent years, by means of a polymer melt dynamic viscoelasticity sensitive response of its phase structure, Evaluation Blends rheology concern. In this paper, rheology, transparency and phase morphology of polypropylene and its blends, the melt elasticity relationship do. The subject POE, EVA, EPDM, SEBS thermoplastic elastomer as modifier, investigated the impact of of different modifiers their amount of PP transparent. The results of SEBS is possible to improve the transparency of polypropylene, SEBS content increases, PP / SEBS blend of transparency gradually increase, when the SEBS content of 40%, the transmittance from 81% to 84%, The haze from 76% to 50%. Crystallinity and the surface roughness is the major factor of the transparency of the impact polypropylene, the paper SEBS Antireflective polypropylene mechanism was analyzed from two aspects of the crystallinity and the dynamic rheological study of the mechanical properties of the polypropylene blends Antireflective , thermal performance. The crystallization properties research shows, SEBS hinder the crystallization of PP, PP crystallization temperature and crystallization rate is significantly reduced, PP crystallinity decreases. SEBS PP is grain refinement, the greater the amount of added, the effect is more obvious, the internal performance of polypropylene amorphous region increased light scattering reduce haze reduced light transmission rate. Dynamic rheological properties showed that with increasing SEBS content, the dispersed phase particle size gradually decreases PP / SEBS blend morphology by the island structure gradually evolved into a bi-continuous phase structure. PP / SEBS blend system to comply with the characteristics of the crystalline haze area i.e. haze decreases with increasing melt elasticity. Thermal Performance Analysis showed that the increase of the SEBS, the decline in the thermal stability of the polypropylene. The mechanical properties testing showed As the the SEBS content increases, the tensile strength of the PP / SEBS blend of lower greatly improved low temperature impact strength, when the SEBS content of 60%, its tensile strength 34.3MPa (pure PP) The down to 14.6MPa, low temperature impact strength by 2.6KJ/m2 (the plain PP) increased to 5.1KJ/m2. Consolidated the performance, the study found: PP / SEBS blend ratio of 60/40, the light transmittance was 84%, tensile strength of 22.1 MPa, impact strength 3.9KJ/m2, achieve better optical properties and mechanical properties balance.
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