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Polyolefins has been widely applicated with qualitative light, non-toxic,inexpensive, easy processing, excellent mechanical properties, electricalproperties and chemical resistance. However, its application is restricted as itseasy to burn. Great progress is made in the development of flame retardantpolyolefin material, but the improvement of the flame retardant properity andother comprehensive performance has been research hot spot. Based on this,several silicone flame retardants were synthesized. Several kinds of new typeflame retardant polyolefin materials were researched and a good foundation willbe laied for preparation of high performance flame retardant polyolefin material.This paper explored the impact of various factors on the silicone SFR-Z1,when the reaction temperature was50℃,time was4h, the amount of dispersantwas0.3ml, phenyl silane and amino silane molar ratio of9:1, SFR-Z1yield upto81.8%. On this basis, I prepared of SFR-Z1derivatives（SFR-Z2, SFR-Z3,SFR-Z4）silicone flame retardants and carried on the contrast research, the resultsshowed that the silicon SFR-Z4optimal performance in all aspects of polyolefinmaterial, and with the amount gradually increased, oxygen index improved,thermal stability of the system increased, mechanical properties of materialschanged little, electrical performance degradation was not obvious.Organic silicon and Al（OH）3/Mg（OH）2complexed, and to studied thesurface treatment of the filler materials impact on the overall performance, theresults showed that after coupling treatment, dispersion of the filler was better,flame retardant, mechanical and electric properties of the material were improved.After the incorporation of the silicone material, the oxygen index was increased,there were good synergies between organic silicon and Al（OH）3/Mg（OH）2.Meanwhile, we studied the changes of material mechanical properties, electricalproperties and flame retardant properties by orthogonal and got the best ratio of the composite system.Organic silicon/metal hydroxide flame retardant system and organicsilicon/expansion flame retardant system did the performance comparison, wegot the best silicone/Al（OH）3/Mg（OH）2/PER halogen flame retardant polyolefincomposites.We added four inorganic nano-oxide filler to the flame-retardant,further optimized the design of its formulation and studied the changes of itsperformance, finally ensured silicon SFR-Z4and Al（OH）3,Mg（OH）2, PER,silicon oxide flame retardant polyolefin composites. At this time, the tensilestrength of the material was12.54MPa, the elongation at break was70.16%, theelastic modulus was175N/mm2, the volume resistivity was4.45×1013·m,break field strength was24.86kV/mm, oxygen index was33.0.
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