Thermal and Antistatic Properties of Polypropylene/Organo Montmorillonite Nanocomposites

Both polypropylene (PP) and PP/organo-montmorillonite (OMMT) masterbatch containing antistatic agent (3–9 wt%) were prepared by using co-rotating twin screw extruder followed by injection molding. PP/OMMT masterbatch was prepared by mixing PP, OMMT and maleated PP (PPgMAH). The PP nanocomposites were characterized by using X-ray diffractometer (XRD), differential scanning calorimeter (DSC), thermogravimetry analyzer (TGA), hardness and surface resistivity tests. XRD results indicated that AA could promote the intercalation in PP/OMMT nanocomposites. The decomposition temperature of PP/OMMT/AA nanocomposites is higher than that of PP/OMMT. The hardness, degree of crystallinity and surface resistivity of PP nanocomposites was influenced by the addition of antistatic agent.     

涤棉纱的防静电研究

探讨了耐洗性抗静电剂合成机理及用于涤棉纱耐洗性抗静电剂的关键技术 ,该项目成果还可用于PVC ,PP ,PE等材料的软、硬塑料上。     

一种医用防护服面料的选择及制备方法

采用浸轧-涂层整理方法制备一种塔夫绸医用防护服面料,并探讨防水剂种类、防水剂用量、消光粉OK-412对涂层后织物性能的影响.结果 表明:当防水剂FD-8用量为3.0％,消光粉OK-412用量为2.0％时,整理后的织物各项指标较优:静水压＞10.00 kPa,透湿量＞2 500 g/(m2·24 h),沾水＞4级,抗静电...     

碳纳米管化学镀镍及其对聚合物纤维的抗静电能力的提高

使聚合物与抗静电剂混纺形成“海岛”型内部结构，基于其通过基团吸湿放电而消除静电的抗静电原理，以碳纳米管混纺有机抗静电剂应用于聚合物纤维。碳纳米管强化抗静电载体周围的电场，促进了基团吸湿层内的电荷耗散过程。通过摩擦静电荷的测试结果显示：碳纳米管的加入显著地提高了聚合物纤维的抗静电能力。经过化学沉积金属镍处理的碳纳米管，抗静电效果进一步显著。     

掺杂型ZnOw/纳米ZnO并用对PP性能的影响

研究了铝掺杂氧化锌晶须(ZnOw)和纳米ZnO对聚丙烯共混物力学性能和抗静电性能的影响.结果表明,铝掺杂氧化锌晶须能提高聚丙烯的冲击强度、拉伸强度和表面电阻率.纳米ZnO与掺杂氧化锌晶须并用能协同增强和增韧聚丙烯,纳米ZnO/掺杂氧化锌晶须/聚丙烯的质量比为2/16/82时,共混体系的综合力学性能较好.     

铝掺杂氧化锌晶须/环氧树脂抗静电性能研究

采用新的铝掺杂方法,降低了氧化锌晶须的本体电阻率;研究了铝掺杂对氧化锌晶须电阻率的影响。含20%掺量的氧化铝使氧化锌晶须的表面电阻率从107~108Ω降低到1·6×106Ω,体积电阻率从108~109Ω·cm降低到7·1×105Ω·cm;研究了铝掺杂氧化锌晶须对环氧树脂抗静电性能的影响,铝掺杂氧化锌晶须的添加量为8%,使涂层的表面电阻降低到7·2×1010Ω。     

Space charge behavior in an antistatic polymer including polymer solid electrolyte

A polymer dielectric material tends to be easily charged and may cause an electrostatic discharge, due to the serious problems that result when consequent electromagnetic noise damages the electronic circuits in various kinds of apparatus. The antistatic polymers that have been developed to prevent electrostatic discharge contain polymer solid electrolytes so that space charge originally exists inside them. The mechanism of the antistatic discharge effect of the polymer has been investigated by measuring the space charge distribution using the high-resolution pulsed-electroacoustic method. The experimental results suggest that the internal space charge of the polymer accumulates at the surface and forms heterocharge distribution at the interface between the electrodes and the specimen. Thus, internal space charge compensates the applied electric field, resulting in preventing the increase of the surface potential. In addition, internal space charge behavior relates to the dispersion condition of the polymer solid electrolyte that depends on the quantity of the electrolytes and the specimen procedures.     

涤纶纤维亲水性能和抗静电性能的研究

采用电晕和紫外线辐照,在涤纶织物表面引入含氧极性基团。通过亲水性能、抗静电性能、力学性能等测试,结果表明,处理后织物的亲水性能和抗静电性能显著提高,耐水洗性能优良。但电晕和臭氧气氛中紫外线辐照均使涤纶织物断裂强度略有下降。     

塑料抗静电剂的研究进展

综述了塑料静电的危害,抗静电剂的分类和特性,论述了抗静电剂的使用技术和作用机理,介绍了国内外抗静电剂的生产厂家和产品类型。着重论述了国内外抗静电剂的研究现状和国外现阶段研究重点高分子永久性抗静电剂的研究现状,同时也对我国抗静电剂的发展提出了建议。     

抗静电半硬质聚氨酯整皮泡沫的研制

采用导电炭黑及十六烷基三甲基溴化铵作为复合抗静电剂 ,制备了抗静电半硬质聚氨酯整皮泡沫 ,研究了导电炭黑及十六烷基三甲基溴化铵在树脂基体中的添加工艺、用量及材料贮存时间对泡沫体积电阻率及表面电阻率的影响。结果表明 :采用球磨机球磨的方式可以将导电炭黑均匀地分散在聚醚组分中 ;在半硬质聚氨酯整皮泡沫的树脂基体中加入复合抗静电剂 ,所制得泡沫的体积电阻率下降为 10 7Ω·m ,表面电阻率下降为 10 10 Ω ,且所制得的泡沫在贮存 2 5a以后仍具有较好的抗静电性能。