三聚甲醛

The yield was 84%. With OP-10, NPE as the the catalyzer for the diazo reaction, the use of hydrolyzed propenenitrile instead of propenoic acid, and OP-10 as the catalyzers of the aminate reaction, these experiments showed the feasibility of industralization, due to the much reduced costs, shortened reaction time and a higher yield.

采用壬基酚聚氧乙烯醚（OP-10）、萘磺酸甲醛缩合物作重氮化反应催化剂，丙烯腈加成、水解替代丙烯酸，OP-10做氨化反应催化剂，通过四因子三水平正交试验法实验，得到较佳反应参数，反应时间、收率、成本都大大降低，适宜工业化生产。

Microcapsules loaded with tetradecane as the core material are prepared by in-situ polymerization methods.

研究采用了以三聚氰胺-甲醛为壁材，正十四烷为芯材原位聚合法制备微胶囊相变材料。

Modified POM ; the three layers composite ; friction and aging resistant property ; supporting material of building in anchor gate

改性聚甲醛；三层复合材料；摩擦与老化特性；闸门滑道支承材料

Non-metal material adopt nontoxic, wear-resistant POM material to make. It meets GMP requirement completely. Main elements adopt Siemens, Schneider, Proface, Mitsubishi, Omron, Seiko and other famous brand, to guarantee reliable running of the machine.

非金属材料采用无毒、耐磨且不易产生脱落物的进口聚甲醛材料制作，完全符合GMP规范要求；主要原器件选用德国西门子、法国施耐德、日本Proface、三菱、欧姆龙、日本精工等国际知名公司产品，确保机器的可靠运行。

It is made generally with mixed salt of triethanolamine and ammonium hydroxide, twelve-acid isopropyl alcohol amides, for malde-hyde, polyvinyl chloride, wool oil, spice, pigment and water as raw materials.

一般采用硫酸脂肪醇的乙三醇胺与氢氧化胺的混合盐、十二酸异丙醇酰胺、甲醛、聚氧乙烯、羊毛脂、香料、色料和水作为原料。

Effects of preparation technology of urea-formaldehyde resin modified with melamineon property of plywood were studied.

采用三聚氰胺对脲醛树脂进行改性，探讨了改性脲醛树脂的合成工艺对性能的影响。结果表明：当甲醛与尿素的最终摩尔比达到 1。

It products of "TengMin" High-level Sound absorption board has developed into fire-protection, zero - formaldehyde, natural wood-silk, natural-finish, fashion-metal ,colorful paint, bush soft packet and gather hydrogen ammonia three times environmental protection etc ,about 8 big series with more than100 varieties.

公司生产的&腾闽&牌高级吸音板，目前已发展为安全防火、零甲醛、天然木丝、天然木皮、时尚金属、幻彩油漆、布艺软包、三聚氢氨环保型等8大系列100多个品种。

Melamine formaldehyde resin was used to encapsulate a phase change material which melt point is 20℃ by in situ polymerization.

采用原位聚合法用三聚氰胺甲醛树脂包覆一种相变点为24℃相变材料A，制得相变储热微胶囊。

Do you know, i need you to come back

你知道吗，我需要你回来

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。