中文摘要：

分别采用非离子型、高分子型和阴离子型3种抗静电剂制备抗静电木粉/聚氯乙烯（PVC）复合材料,重点研究了阴离子型抗静电剂SAS-93对木粉/PVC复合材料抗静电性能的影响。结果表明,与其他两种抗静电剂相比,阴离子型抗静电剂SAS-93的抗静电作用效果最好,当添加量达到40 g时,复合材料的表面电阻率ρs和体积电阻率ρV分别下降至1.20×10 8Ω和4.67×10 8Ω·cm,已经达到了抗静电材料的要求。继续增加抗静电剂的添加量,木粉/PVC复合材料的ρs和ρV均有所降低,但是当添加量超过80 g时,复合材料的ρs和ρV下降幅度很小。红外分析表明SAS-93并未与复合材料中除PVC以外的其他组分发生化学反应。热重分析表明SAS-93在一定程度上有利于木粉/PVC复合材料提前成炭,提高其高温时的热稳定性。随着SAS-93添加量的增加,复合材料平衡转矩和剪切热降低,说明SAS-93可以改善复合材料的加工性能,但同时也大幅度降低了复合材料的弯曲强度、弯曲模量和冲击强度。动态力学分析中储能模量与静态力学分析中弯曲模量有相同的变化趋势。

英文摘要：

Wood flour/PVC composite is consisted of two main components, wood flour and PVC. It possesses excellent electrical insulation property. It is necessary to conduct antistatic treatment on wood flour/PVC composite for certain applications, such as used in computer room, conference room, program-controlled equipment room, operating room or electronic components workshop due to the accumulation of excessive electrostatic charge, which is detrimental to human health and electronic devices. The antistatic wood flour/PVC composite with the addition of different contents of nonionic antistatic agent, polymer antistatic agent, and anionic antistatic agent were prepared via extrusion. The effects of anionic antistatic agent （SAS-93） on the properties of wood flour/PVC composite were investigated in detail. In comparison with non-ionic antistatic agent and polymer antistatic agent, the anionic antistatic agent showed the best antistatic effect for wood flour/PVC composite. When the content of SAS-93 was 40 g, the surface resistivity （ρs） and volume resistivity （Pv） of the composite were dropped to 1.20×10 8 Ω and 4. 67×10 8 Ω·cm, respectively, meeting the requirement of related antistatic materials. The ρs and ρv decreased with further increasing of SAS-93 content. The antistatic property of wood flour/PVC composite improved slightly when adding more than 80 g SAS-93. The FTIR analysis showed that SAS-93 did not react with other components of the composite other than PVC. TG analysis showed that the addition of SAS-93 improved the thermal stability of the composite by promoting the composite partly forming char in advance at high temperature. The torque analysis showed that the equilibrium torque and shear heat of the composite decreased with the increasing of SAS-93 content, indicating that the addition of SAS-93 with moderate amount is beneficial to the processing properties of wood flour/PVC composite. However, the flexural strength, flexural modulus and impact strength of the composite decreased rem