The best foaming condition is happened by adding 7% PYA resin and 4% foaming agent.
实验结果显示聚七烯醇树脂浓度为7%及发
添加比例为4%时具有最佳发结构。
The best foaming condition is happened by adding 7% PYA resin and 4% foaming agent.
实验结果显示聚七烯醇树脂浓度为7%及发添加比例为4%时具有最佳发结构。
The preparation of ADC foaming agent from biurea by dioxygen catalytic oxidation was investigated and discussed.
对用分子氧催化氧化联二脲制取ADC发
行了探讨。
The purpose of this paper is to study the radar absorbing effect of foamglass with graphite as vesicant.
本文
目是
究石墨作发沫
微波吸收特性。
A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .
苯酚与甲醛在碱性条件下经加成、缩合制得可发性酚醛树脂，该树脂和表面活性、发、固化一起发即得酚醛沫塑料。
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