1·The analytic study was also made on molecular structure of urea-formaldehyde resins.
还对脲醛树脂的分子结构进行了分析研究。
2·The fire-retardant urea-formaldehyde resins were synthesized with urea and formaldehyde and P800 and borax.
通过分批加入尿素的方法，将尿素、 甲醛、 阻燃剂P800和硼砂反应制备阻燃脲醛树脂。
3·The two most important synthetic polyamides are the urea-formaldehyde resins and the various forms of nylon.
两种最重要的合成聚酰胺是脲甲醛树脂和各种形式的尼龙。
4·The fire-retardant urea-formaldehyde resins with P800 decreased the formaldehyde and improved the fire-retardant property.
含P800的阻燃脲醛树脂能降低游离甲醛量，提高阻燃性能。
5·The chemical change of four resole type phenol-formaldehyde resins in curing process was studied by infra-red spectroscopy.
用红外光谱法研究了四种热固性酚醛树脂在固化过程中的化学变化。
6·The paper developed a new synthetic technology of urea-formaldehyde resins, and the content of free formaldehyde was more than 0.3%.
提出了一种脲醛树脂合成思路，并合成出游离甲醛含量高于0.3%的树脂。
7·The high specific surface area activated carbon (HSSAAC) is prepared with phenol-formaldehyde resins as raw material and NaOH as activators.
以农林废弃物——烟杆的炭化料为原料，采用微波加热氢氧化钾活化法制备了高比表面积活性炭。
8·The results showed: the cured urea formaldehyde resins were mainly distributed in small sized particles, but little in large sized particles;
结果表明，已固化的脲醛树脂主要分布在细刨花中，中粗刨花中极少存在；
9·Its major USES are for organic synthesis, especially of formaldehyde, as an automotive antifreeze, as a solvent for cellulosics and natural resins, and as the principal denaturant for ethyl alcohol.
其主要用途是有机合成，特别是合成甲醛，用作汽车防冻剂、纤维素和天然树脂溶剂以及乙醇的主要变性剂。
10·Water soluble sulfonated acetone formaldehyde (SAF) resins were synthesized by using acetone, formaldehyde and sodium bisulfite as starting materials.
以丙酮、甲醛和亚硫酸氢钠为主要原料合成了水溶性磺化丙酮-甲醛缩合物(SAF)。