Influence of Voltage Stabilizer on the DC Breakdown Strength of PP/ Elastomer Blends

doi:10.11985/2022.01.029

Abstract

Abstract:

Elastomer polymer can be used to improve the toughness of polypropylene (PP) insulation material, but it may weaken the electrical properties of PP. Voltage stabilizer has been used to improve the electrical properties of XLPE, but it is not clear whether it can play a role in PP based insulation materials. The effects of two elastomer polymers (POE and SEBS) on the mechanical and DC breakdown properties of PP are studied. The influence of voltage stabilizer on DC breakdown strength is investigated with the optimal components, which are selected by the mechanical properties. The results show that POE and SEBS can toughen PP, but the DC breakdown strength of the composites decreases with the increase of POE and SEBS. All the three voltage stabilizers can improve the electrical properties of pure PP, especially the AOHBP realized an increment of 34.6% when 0.4 phr is doped. However, none of the three voltage stabilizers can improve the DC breakdown strength of elastomers or PP/elastomer blends, and the effect of voltage stabilizers is significantly affected by the polymer matrix.

Key words: Polypropylene insulation, thermoplastic elastomer, voltage stabilizer, blending modification, DC breakdown strength

CLC Number:

TM85

MENG Fei, SHAO Manzhi, NIU Yue, HU Wei, LI Chunyang, ZHAO Hong. Influence of Voltage Stabilizer on the DC Breakdown Strength of PP/ Elastomer Blends[J]. Journal of Electrical Engineering, 2022, 17(1): 234-243.

Figures/Tables 10

References 20

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材料种类	断裂伸长率 (%)	拉伸断裂应力/ MPa	拉伸屈服应力/ MPa
PP	415.2	16.19	14.8
PP+20POE	302.9	13.60	11.0
PP+30POE	330.8	14.10	11.6
PP+40POE	383.8	9.50	6.9
PP+20SEBS	319.5	15.70	12.3
PP+30SEBS	352.8	16.40	12.4
PP+40SEBS	411.0	17.10	8.3