复合添加剂对石蜡性能影响的研究

Effect of Compound Additives on Properties of Paraffin

以聚乙烯蜡和硬脂酸为添加剂,采用水浴加热混合蜡测量滴熔点和粘度,在聚乙烯蜡质量百分含量为0%～15%、硬脂酸质量百分含量为0%～60%范围内,对石蜡的使用性能进行改性研究。实验结果表明,聚乙烯蜡和硬脂酸均对石蜡滴熔点和运动粘度有一定的影响。在聚乙烯蜡添加量为0%～15%的范围内,改性石蜡的性能得到明显改善,其中改性石蜡的滴熔点呈缓慢增高趋势,后保持稳定;当其添加量在3%～5%的范围内,改性石蜡的熔点快速升高。在聚乙烯蜡加入量为3%时加入质量分数为5%～60%硬脂酸进行对比试验。硬脂酸在添加量为5%～25%时,改性石蜡滴熔点呈下降趋势;硬脂酸添加量为25%～60%时,改性石蜡滴熔点上升,但上升效果不明显。

Using polyethylene wax（mass percent： 0%～15%） and stearic acid（mass percent： 0%～60%） as additives,the paraffin was modified,the water bath method was used to measure the drop melting point and viscosity.The experimental results show that the polyethylene wax and stearic acid have certain effect on paraffin melting point and viscosity;when polyethylene wax content is in the range of 10%～15%,properties of modified paraffin wax is apparently improved,the drop melting point slowly increases,then it maintains stability.When polyethylene wax content is in the range of 3%～5%,the melting point of paraffin wax increases rapidly.When polyethylene wax content is 3% and stearic acid is in the range of 5%～25%,the drop melting point of modified paraffin wax decreases;when stearic acid is in the range of 25%～60%,the drop melting point of modified paraffin wax rises,but rising effect is not obvious.