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发进行
。
The purpose of this paper is to study the radar absorbing effect of foamglass with graphite as vesicant.
本文
目是
究石墨作发沫玻璃微波吸收特性。
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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