近几年来,随着电子整机向数字化、高频化、多功能化,电子元器件向微型化、薄型化、高精度、低功耗及高功率等的发展趋势,印制电路板对其基材———电子玻纤布的电性能,提出了越来越高的要求。最近,日本国日东纺织株式会社继数年前开发成功低介电常数的S型与D型电子玻纤布后,又 In recent years, with the electronic machine to digital, high frequency, multi-functional, electronic components to the miniaturization, thin, high precision, low power consumption and high power trends, printed circuit board its Substrate --- electronic glass cloth electrical properties, put forward higher and higher requirements. Recently, Japan’s National East Textile Co., Ltd. succeeded in developing a few years ago, the low dielectric constant S-type and D-type electronic glass cloth, and