查询词典 phenol formaldehyde resin
- 与 phenol formaldehyde resin 相关的网络例句 [注：此内容来源于网络，仅供参考]
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To broaden desert shrub new utilizing fields, accelerate desert shrub developing to the direction of high added-value and high benefit, the paper studied on the liquefaction of Salix, Caragana and Poplar in the presence of Phenol under sulfuric acid catalysis. The optimum processing parameters for Salix, Caragana and Poplar liquefaction and resinification were investigated. The effect of molar ratio of formaldehyde to liquefied products and NaOH to liquefied products on the character and glue strength of liquefied products resin was studied.
摘 要：为了开辟沙生灌木资源新的应用领域，促使沙生灌木资源的利用向高附加值、高效益的方向发展，本文以苯酚作液化剂，以稀硫酸作催化剂对沙柳、柠条和杨木进行液化实验，分析了反应温度、液比、催化剂用量及液化时间对液化反应的影响；并研究了沙柳、柠条和杨木液化产物树脂化合成工艺和配方，分析了不同的甲醛与液化产物摩尔比以及氢氧化钠与液化产物摩尔比对沙柳、柠条和杨木液化产物树脂的各项性能的影响。
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The resin in your cost-conscious choice of a woodchip roof, a waterproof goo of formaldehyde and phenol polymer, was also applied along the board's exposed edges, but it fails anyway because moisture enters around the nails.
你出于成本考虑而选择的木制胶合板，其中含有的树脂是一种由甲醛和苯酚的复合物构成的防水黏合剂。它也被涂抹在木板暴露在外的边缘，不过没什么作用，因为水份从钉子周围渗透进去。
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A better method of decreasing free formaldehyde and free phenol during the synthesis of phenolic resol resin was investigated.
经分析，改性后的酚醛树脂中，游离酚和游离醛的含量进一步降低。
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However, phenolic resin contains high contents of free phenol and free formaldehyde that cannot be removed substantially.
但是，在制备酚醛树脂的过程中，有大量的游离酚、游离醛不能反应完全，残留在树脂中，对环境和人体的危害极大。
- 推荐网络例句
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Do you know, i need you to come back
你知道吗，我需要你回来
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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.
1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。
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Chapter Three: Type classification of DE structure in Sino-Tibetan languages.
第三章汉藏语&的&字结构的类型划分。