抗静电PA6–PEG共聚物的合成与性能研究

以己内酰胺和聚乙二醇(PEG)为原料,通过熔融缩聚合成了聚酰胺(PA)6基抗静电聚醚酯酰胺共聚物(PA6–PEG)。研究了样品的热水萃取率,通过傅里叶变换红外光谱、电子万能试验机研究了样品的结构和力学性能,并测试了抗静电性能。结果表明,样品的热水萃取率随着PEG添加量的增加而提高;样品为嵌段共聚物,通过酯基相连接;PEG的加入能够有效降低PA6的表面电阻率,达到109Ω数量级,可以满足抗静电的要求;PEG对样品有一定的增韧作用,可以通过调整PEG的含量获得需要的力学性能。     

储油罐环氧基钛纳米复合导静电涂层耐蚀性能

目的研究钛纳米填料粒径和含量对环氧基钛纳米复合导静电涂层耐蚀性能的影响。方法将不同粒径的钛纳米粉(经聚乙烯基吡咯烷酮表面预处理)按不同量加入双酚A(E)型环氧树脂中,之后涂覆在Q235钢表面形成导静电复合涂层。通过表面电阻测试、截面形貌观察、电化学极化曲线和阻抗谱测试,分别评价复合涂层的导静电性能、截面结构和耐蚀性。结果钛纳米粉添加量(占涂层质量百分比)为28%时,随着钛纳米粉粒径从40 nm增大到200 nm,环氧基复合导静电涂层的表面电阻降低,截面结构更加杂乱,添加100 nm钛纳米粉的涂层阻抗和极化曲线阳极电流分别出现最大值和最小值。添加的钛纳米粉粒径为100 nm时,随着添加量从7%增至28%,环氧基复合导静电涂层的表面电阻降低,截面孔洞增大,阻抗值降低,极化曲线阳极电流增大。结论钛纳米填料的加入可以有效提高涂层的导静电性能、致密性和耐蚀性。当添加量为28%时,钛纳米粒径大于100 nm后,涂层截面形貌更加杂乱,耐蚀性降低。对于100 nm粒径的钛纳米填料,当其添加量大于7%时,复合涂层的致密性和耐蚀性降低。     

抗静电腈纶用纳米金属氧化物的分散工艺研究

选择氧化锌(Zn O)、铝掺杂氧化锌(AZO)、氧化锡锑(ATO)以及ATO包覆硫酸钡(Ba SO4)4种纳米粉体抗静电剂球磨分散得到其水相悬浮液,利用喷雾共混的方法制备改性聚丙烯腈(PAN)纺丝原液,进行湿法纺丝,研究了表面活性剂种类、研磨工艺对纳米粉体在水相中沉降性的影响,以及改性PAN纤维的抗静电性能。结果表明:采用自制的非离子/阴离子表面活性剂复配物(FCY)作为分散剂,FCY质量分数(相对于纳米粉体)为2%,研磨时间3 h,纳米粉体的水相分散效果好,分散工艺对4种纳米粉体均有很好的适用性;ATO改性PAN纤维具有较好的抗静电效果,当添加ATO质量分数为2.0%时,PAN纤维的体积比电阻为3.1×109Ω·cm,具有耐久性,可以满足抗静电织物对原料的要求。     

LED外延片上芯片静电击穿的测试分析

利用静电仪和HBM模型研究了GaN基LED外延片上芯片的抗静电性能,并根据pn结势垒电容的特性,对实验结果进行了分析.实验结果表明,缺陷击穿与外延片的工艺有着密切的关系;随着外延片上芯片尺寸的增大,其抗静电能力也随之增强.     

Effect of water‐absorbing nanospheres on antistatic property of isotactic polypropylene fibers

In this article, novel antistatic isotactic polypropylene (iPP) fibers were prepared through adding ternary polymer water‐absorbing nanospheres (TPWANs) into iPP melt in melt spinning process. The TPWANs were synthesized through emulsion copolymerization of styrene (St), butyl acrylate (BA), and sodium allylsulfonate (SAS). The characterization results of Fourier transform infrared spectrometer (FT‐IR) and ¹H nuclear magnetic resonance (¹H NMR) confirmed the ternary components in this copolymer. Transmission electron microscopy (TEM) images indicated the nanospherical shape of TPWANs with the characteristics of 80–90 nm size range of diameter and good dispersion in iPP fibers. The volume resistance of iPP fibers decreased by three orders from 10¹² to 10⁹ Ω cm when the 6 wt % TPWANs was added into iPP fibers, indicating that the blend fibers have good antistatic property. Most importantly, the nanospherical structure of TPWANs imparts both the compatibility and antistatic property into the blend iPP fibers. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 40568.     

Influence of reaction conditions on the formation of nanotubes/nanoparticles of polyaniline in the presence of 1‐amino‐2‐naphthol‐4‐sulfonic acid and applications as electrostatic charge dissipation material

BACKGROUND: Poly(1‐amino‐2‐naphthol‐4‐sulfonic acid) and its copolymers with aniline are a new class of conducting polymers which can acquire intrinsic protonic doping ability, leading to the formation of highly soluble self‐doped homopolymers and copolymers. Free ? OH and ? NH₂ groups in the polymer chain can combine with other functional groups that could be present in protective paints which can thus be successfully used as antistatic materials. RESULTS: This paper reports the formation of nanotubes of polyaniline on carrying out oxidative polymerization of aniline in the presence of 1‐amino‐2‐naphthol‐4‐sulfonic acid (ANSA) in p‐toluenesulfonic acid (PTSA) as an external dopant. The presence of ? SO₃H groups in the ANSA comonomer allows the copolymer to acquire intrinsic protonic doping ability. The polymerization mechanism was investigated by analysing the ¹H NMR, ¹³C NMR, Fourier transform infrared and X‐ray photoelectron spectra of the copolymers and homopolymers, which revealed the involvement of ? OH/? NH₂ in the reaction mechanism. Scanning and transmission electron microscopy showed how the reaction route and the presence of a dopant can affect the morphology and size of the polymers. Static decay time measurements were also carried out on conducting copolymer films prepared by blending of 1 wt% of copolymers of ANSA and aniline with low‐density polyethylene (LDPE) which showed a static decay time of 0.1 to 0.31 s on dissipating a charge from 5000 to 500 V. CONCLUSION: Copolymers of ANSA with aniline were synthesized in different reaction media, leading to the formation of nanotubes and nanoparticles of copolymer. Blends of 1 wt% of PTSA‐ and self‐doped copolymers of ANSA and aniline with LDPE can be formulated into films with effective antistatic properties. Copyright © 2009 Society of Chemical Industry     

丙纶抗静电针刺过滤材料的工艺与性能

对含不锈钢纤维的抗静电过滤布的生产工艺进行了研究,为抗静电过滤布的开发提供了一种途径。选用丙纶和不锈钢纤维为原料,开发针刺抗静电过滤材料,通过三因素三水平正交试验,得出优化工艺参数。对用优化工艺加工出的产品进行轧光整理,对整理前后产品的抗静电性能、过滤效率等进行了测试分析。     

含纳米ATO聚氨酯弹性抗静电涂料

以脂肪族聚氨酯弹性树脂为基体，透明纳米ATO导电粉为导电介质，添加超分散剂，采用物理与化学相结合的分散方法对纳米ATO进行预处理。主要解决纳米粒子的分散与团聚的难题，制备出可常温固化、颜色可调的含纳米ATO聚氨酯弹性抗静电涂料。讨论了基体树脂、纳米ATO含量、超分散剂种类与加量、研磨时间以及助剂等因素对抗静电涂料的表面电阻、耐候性、弹性、强度以及稳定性等性能的影响。同时对涂料的性能进行了测试与表征。     

煤矿用PVC阻燃输送带抗静电性能的研究

介绍了煤矿用PVC阻燃输送带的抗静电原理、配方以及工艺过程.实践证明,通过添加抗静电剂和导电材料,能够生产出抗静电效果良好的PVC阻燃输送带.     

硼酸酯表面活性剂的研究及应用

介绍了硼酸酯表面活性剂的结构以及性能改善的方法，综述了硼酸酯表面活性剂的合成研究进展及其在抗静电、阻燃和抗磨等领域的应用现状，重点阐述了高分子硼酸酯表面活性剂抗静电性能的研究应用，并对其在含能材料等工业部门的应用前景进行了展望。附参考文献27篇。