论文部分内容阅读
这里要介绍的几种酚醛夹層塑料所能经受的温度大大超过了数年前所报导的数值。 在任何夹層塑料中,其强度大致与填料的(?)维结构有关。在夹纸塑料方面,酚醛树脂能使(?)维纸具有耐湿性和耐热性。这一点由以下事实可以证明:(?)一张不塗胶的纸不能用于温度超过90℃的电绝缘材料(0级电绝缘)。而酚醛树脂夹纸型塑料可用于105℃(A级电绝缘),甚至在某些方面可使用在更高的温度下。酚醛树脂已将(?)维纸的的耐热性提高15～20℃。 夹石棉塑料 如果用石棉代替(?)维,则耐热性可显著提高。石棉夹層塑料可连续使用到150℃,而在某些方面已使用到175℃。这是树脂和(?)维对夹層塑料的贡献的一个实例。
Several of the phenolic interlayer plastics to be introduced here can withstand temperatures well above the values reported a few years ago. In any sandwich plastic, its strength is roughly related to the (?) Dimensional structure of the filler. In paperboard plastic, phenolic resin can make (?) Dimensional paper with moisture resistance and heat resistance. This is evidenced by the fact that: (?) An uncoated paper can not be used for electrical insulation (Class 0 electrical insulation) at temperatures in excess of 90 ° C. Phenolic resin paper-based plastic can be used at 105 ° C (Class A electrical insulation), and even in some aspects can be used at higher temperatures. Phenolic resin has (?) Dimensional paper heat resistance increased 15 ~ 20 ℃. Asbestos plastic with asbestos instead of (?) Dimension, the heat resistance can be significantly improved. Asbestos laminated plastics can be used continuously to 150 ° C, and in some aspects have been used to 175 ° C. This is an example of the contribution of resin and (?) Dimension to laminated plastic.