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开发合成了不含铬盐和酚醛树脂的水溶性树脂,采用不同粒径的无机粒子,使其在体系中达到50%的比例充当涂层的主体。通过有机物、无机物、助剂三者的优化组合及工艺设计,实现有机组分和无机组分之间的很好结合,功能互补。开发的涂层既能保持无机涂层的耐热性能,耐FranKlin烧损试验,又具有较好的柔韧性和铺展性,且能增强涂层的冲剪性能。应用实验结果表明,0151水溶性半无机硅钢片漆用于冲片的涂层片间绝缘电阻达到9 999 MΩ,FranKlin烧损试验最大泄露电流值为0.053 9 A,其他各项性能均与国外某公司进口漆性能水平相当,完全能满足大中型发电设备的技术要求和生产需要。 相似文献
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133C半无机硅钢片漆的研制与应用 总被引:1,自引:0,他引:1
前言 随着电机单机容量的不断提高,对大型电机定子铁芯的绝缘要求越来越高。国外大型电机定子铁芯均采用无机或半无机绝缘,如美国西屋公司、德国西门子公司、加拿大GE公司、瑞士BBC公司、法国A—A公司、日本日立公司等无一例外。而国内硅钢片 相似文献
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叙述了半无机硅钢片漆的国内外研究概况和发展趋势,分析了水溶性漆基和油溶性漆基对半无机硅钢片漆性能的影响,探讨了无机填料的种类,粒径和表面处理等因素对其性能的影响和作用。 相似文献
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本文介绍了国内外硅钢片漆的发展概况。详细阐述了水溶性半无机硅钢片漆的研究及在产品上的应用情况。通过对单体的选择、摩尔比及催化剂种类与用量的筛选和对制备工艺的控制以及无机填料的引入,使该半无机漆水溶性极佳并具有十分优良的机、电性能和热稳定性,极大地提高了电机长期安全运行的可靠性。针对水溶性半无机硅钢片漆的特点,通过大量试验,探讨出生产上切实可行的工艺条件。 相似文献
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本文叙述了半无机硅钢片漆国内外研究概况和国内10余年三个主要研究阶段。分别论述了改性水溶性酚醛树脂,亚胺改性水溶性聚酯树脂及无机填料种类,粒径,表面改性等因素对半无机硅钢片漆性能的影响。 相似文献
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以磷酸二氢铝、镁为主要枯结剂,胶体二氧化硅、磷酸二氢铵、硼酸、氧化镁为助剂,研制出一种新型水溶性无机硅钢片漆.经过实验证明,该无机硅钢片漆除符合通用硅钢片漆的基本要求外,还具有较好的贮存稳定性,优良的耐高温性,可保证长时间在600℃的条件下漆膜不被破坏,并在600℃的条件下满足"热振"要求. 相似文献
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Chikara Kaido 《Electrical Engineering in Japan》1997,118(3):58-66
Spiral cores made of grain-oriented electrical steel sheets (GO) were developed to be used as a high performance motor core. All teeth directions are coincident with the GO rolling directions (easy magnetization axis) in the spiral cores. The GO spiral cores have excellent properties because the GO has very low iron loss and very high permeability in the rolling direction. In the GO spiral cores, the iron losses decrease to a quarter and the inductions are 0.2 T higher at 800 A/m as compared with conventional spiral cores made usually of SPCC. Because the thickness of conventional spiral cores generally varies, applications are limited to automobile alternator cores. The thickness of GO spiral cores changes little during a spiral deformation because the core sheets are deformed transversely to the rolling direction of GO, that is, <110>{011}; the <110>{011} deformation of Fe does not create sheet thickness. As the stiffness and packing factor of a GO spiral core are high in the order of no thickness change, GO spiral cores have high performance for motor cores. © 1997 Scripta Technica, Inc. Electr Eng Jpn, 118 (3): 58–66, 1997 相似文献
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Yoshihiro Kawase Tadashi Yamaguchi Ryoji Okayasu Kei Iwashita Masaaki Aoki Tsuyoshi Tsuzaki 《Electrical Engineering in Japan》2006,156(1):61-69
We developed a method, called the multinode technique, that can take into account any electrical isolation of conductors using the multinodes of the electric scalar potentials. The eddy currents in the laminated silicon steel sheets can be calculated using this method without the mesh of the interlaminar air gap. It is quantitatively clarified that the eddy currents in the laminated silicon steel sheets in a permanent magnet‐type MRI system have effects on the time variations of the flux distributions. © 2006 Wiley Periodicals, Inc. Electr Eng Jpn, 156(1): 61–69, 2006; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20208 相似文献
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