Research on Preparation Technology and Properties of LGF/PP Composite Material
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摘要: 采用连续玻璃纤维（GF）增强高流动性聚丙烯（PP），通过共混挤出和二次预热模压，制备了LGF/PP复合材料标准样板，研究了不同共混挤出工艺对LGF/PP模压成型标准样条性能的影响。研究结果表明，随着纤维进纱数量和主螺杆转速的增加，LGF/PP标样的拉伸和弯曲弹性模量及玻璃纤维含量逐渐增加，而其弯曲强度、冲击强度、拉伸强度逐渐减小；随着主喂料速度的增加，LGF/PP标样的拉伸和弯曲弹性模量及玻璃纤维含量逐渐减小，弯曲强度、冲击强度、拉伸强度逐渐增加。Abstract: Continuous glass fiber(GF) reinforced high fluidity polypropylene(PP) composite material were prepared by blending extrusion and the second preheating mold, and the influence of the different preparation conditions on the mechanical properties of composite materials were discussed. The results show that with the increase of the number of fiber yarn and rotating speed of the main screw, the tensile modulus, the bending modulus and the glass fiber content of the LGF/PP increase gradually, and that the tensile strength, bending strength and impact strength reduce gradually. With the increase of the main feeding speed, the tensile modulus, bending modulus and the glass fiber content of the LGF/PP reduce gradually, and the bending strength, impact strength and tensile strength increase gradually.
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Keywords:
- composite materials /
- co-polypropylene /
- continuous fiberglass /
- molding
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