Electrical resistance characteristics of starch foams

The insulative character of expanded polystyrene loose-fill packing material supports the immobile triboelectric charge on its surface, causing static cling. One beneficial property of starch-based loose-fill is its antistatic behavior, which prevents the buildup of electrostatic charges on the foam surface, resulting in no static cling. This investigation explores the electrical resistance characteristics of plasticized starch materials such as commercial loose-fill. Electrical resistance standards used in this study to measure surface resistance and static decay properties are ASTM D 257-78, EOS/ESD S-11, and EIA 541. Following these established testing protocols, the electrical resistance of starch-based and expanded polystyrene loose-fill is quantified. Surface resistivity, measured at 12% RH, of starch-based loose-fill products is less than 1.0×10¹² per square characteristic of inherently static dissipative materials.Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and the use of the name by the USDA implies no approval of the product to the exclusion of others that may be suitable.Presented at the 1995 International Chemical Congress of Pacific Basin Societies, Symposium onEnvironmental Polymer Biodegradation, December 17–22, 1995, Honolulu, Hawaii, USA.     

新型乙醇汽油防静电混合器数值模拟研究

设计了一种新型乙醇汽油防静电混合器,基于CFD方法对新型乙醇汽油防静电混合器及简单的T型管混合器的内部流场分别进行数值分析,通过比较混合器中各组分浓度分布、压力分布、速度分布等特征,研究乙醇与汽油在混合器中的混合效果,并分析静电产生的风险。结果表明：在新型混合器螺旋叶片的作用下,乙醇汽油在出口处几乎混合均匀,速度趋于一致,且压力损失较小,说明新型混合器可以在较小的能耗下获得较好的混合效果,从而有效减少静电积聚。     

浅谈防静电织物的应用及发展前景

本文描述了静电产生的原因和静电现象,分析了静电给一些行业造成的危害。并从个体防护的层面阐述了如何消除静电,同时还分析了防静电纤维的发展趋势,并对防静电服装的穿着进行了阐述。     

微孔发泡聚氨酯底系列安全鞋的研制

聚氨酯是由异氰酸酯与多元醇反应制成的一种具有氨基甲酸酯链段重复结构单元的聚合物。聚氨酯鞋底与普通橡胶鞋底相比,它具有质量轻、耐磨性能好等特点。新研制的聚氨酯鞋底以聚氨酯树脂为主要原料,采用微孔发泡技术,解决了目前国内普通聚氨酯鞋底容易脱胶、断底等问题。通过增加各种添加剂,使聚氨酯鞋底在耐磨、耐油性、电绝缘、防静电和耐酸碱性能方面有了很大的提高。笔者研究采用了新的加工工艺、成型工艺和外观设计,鞋的各项安全性能更稳定,且穿着美观舒适、经久耐用,达到国内领先水平。