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通过改变加工工艺改善Mg(OH)2在HDPE中的分散性,先用双螺杆塑化挤出机混合造粒,再采用三螺杆动态混炼挤出机挤出造粒,对不同振动参数(振幅、频率)下制取的含不同质量分数Mg(OH)2的HDPE/Mg(OH)2复合材料进行研究,研究结果表明:三螺杆动态混炼挤出机有利于提高Mg(OH)2在复合材料中的分散性,从而提高复合材料的拉伸性能。Mg(OH)2质量分数分别为10%、20%、30%的复合材料的拉伸强度最大值分别为25.9、26.8、27.3 MPa。
By changing the processing technology to improve the dispersibility of Mg (OH) 2 in HDPE, the first use of twin-screw plasticizing extruder mixed granulation, and then using three-screw dynamic mixing extruder extrusion granulation, the vibration parameters of different (OH) 2 with different mass fraction of Mg (OH) 2 were prepared by a three-screw extruder. The results show that the three-screw dynamic mixing extruder is good for increasing the content of Mg (OH) 2 Dispersibility in the composite material, thereby improving the tensile properties of the composite material. The tensile strength of composites with Mg (OH) 2 mass fraction of 10%, 20% and 30% were 25.9, 26.8 and 27.3 MPa, respectively.