cyanate

the reaction mechanism of cyanate ester monomer synthesized by a "cyanogen halide-phenol method" is discussed.

分析了“卤化氰-酚法”合成氰酸酯单体的化学原理。

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the cyanate ester of novolac, prepared in this paper, has lower content of impurity, higher char yield and good processability, which is suitable for use as the matrix of high performance ablative material.

研究结果表明，所制备的酚醛型氰酸酯具有低的杂质含量、高的烧蚀残碳率，适合于高性能烧蚀材料的树脂基体。

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In all the systems studied, the rate of reaction showed a first-order dependence on the cyanate concentration in the kinetically controlled stage.

在所有的体系中，催化反应速率常数对氰酸酯单体浓度在动力学控制阶段表现为一级反应。

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Sodium cyanate was prepared from reactants& urea and anhydrous sodium carbonate through liquid-solid chemical reaction method, in the solvent of N, N-dimethlformamide ( DMF).

使用液固化学反应法，以尿素和无水碳酸钠为原料，在N，N-二甲基甲酰胺（DMF）溶剂的反应介质中，制备了氰酸钠产品。

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Hydantoin was synthesized from glycine and sodium cyanate, which was condensed with benzaldehyde to give monohydrated sodium phenylpyruvate in 67.0% of overall yield after alkaline hydrolysis.

由甘氨酸和氰酸钠反应合成海因，然后与苯甲醛缩合，经碱水解得到一水合苯丙酮酸钠，总收率为67.0%。

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synthesis and characterization of cyanate ester of novolac for high performance ablative material

高性能烧蚀材料用酚醛型氰酸酯的合成与表征

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The cyanate Resin is modificated by styrene and divinyl benzene , which are called active diluent.

以苯乙烯和二乙烯基苯作为氰酸酯树脂的活性稀释剂,得到粘度低、贮存稳定性好的改性树脂体系.

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the preparation of high purity sodium cyanate by liquid -solid chemical reaction method

液固化学反应法制备高纯度氰酸钠

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The reaction mechanism of cyanate ester monomer synthesized by a " cyanogen halide-phenol method " is discussed.

分析了 “ 卤化氰 - 酚法 ” 合成氰酸酯单体的化学原理.

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A Study on Producing Hand saw with Liquid Carbonitriding Process of Regenerating Cyanate Salt Bath

手用钢锯条液体碳氮共渗工艺的研究

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In this paper, the properties modification of cyanate resin by blending or co-polymerization with thermoplastic, rubber, thermoset resins and olefinically unsaturated compounds is introduced.

介绍了氰酸酯树脂与热塑性树脂、橡胶弹性体、热固性树脂及含有不饱和双键的化合物共混或共聚改性的研究现状。

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The varieties, synthesis, properties, modifying methods and applying prospect oi cyanate resin are mainly introduced.

主要介绍氰酸酯树脂的种类 、 合成 、 性能 、 改性方法,以及应用前景.

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The preparation of high purity sodium cyanate by liquid-solid chemical reaction method

液固化学反应法制备高纯度氰酸钠

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Polyurethane demulsifier for crude oil were prepared from polypropylene glycol, xylene, toluenediiso-cyanate in xylene solvent.

用聚丙二醇和甲苯二异氰酸酯为原料, 二甲苯为溶剂合成了聚氨酯型原油破乳剂(PPG).

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Thermal, mechanical, dielectric properties and moisture absorption performance of CCLs were improved with the increase of cyanate content.

覆铜板的热学、力学、介电等性能随着随氰酸酯含量的增加均得到改善。

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Results showed that sodium cyanate with 98.1% purity could be obtained in the medium of DMF, when the mole ratio of urea to anhydrous sodium carbonate was 2.5, the reaction temperature 120~ 140 ℃ and reaction time 8~ 10 h.

实验结果表明，在DMF反应介质中，当尿素与无水碳酸钠物质的量比为2.50，反应温度120~140℃，反应时间8~10h，可以制得纯度为98.1%的氰酸钠产物。

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Cyanate ester resin is a kind of high performance thermosetting resin and developed after the epoxy resin, bismaleimide and polyimide resin.

氰酸酯树脂是继环氧树脂、双马来酰亚胺树脂和聚酰亚胺树脂之后发展起来的一种高性能热固性树脂。

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synthesis and characterization of a novolac cyanate ester resin by a modified phenol-cyanogen bromide method

改进的酚-溴化氰法合成酚醛型氰酸酯及其表征

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