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
进行了探讨。
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进行了探讨。
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
浓度为7%及添加比例为4%时具有最佳结构。
The purpose of this paper is to study the radar absorbing effect of foamglass with graphite as vesicant.
本文的目的是
究石墨作的沫玻璃的微波吸收特性。
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、缩合制得可性酚醛，
和表面活性、、固化一起即得酚醛沫塑料。
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