三聚氰胺-甲醛树脂

The method of urea for three times and oxidized starch was used to synthesize dust depressor of sulfonated melamine-urea-formaldehyde resins.

采用氧化淀粉和3次投加尿素进行改性的工艺合成了改性磺化三聚氰胺脲醛树脂抑尘剂。

The method of urea for three times and oxidized starch was used to synthesize dust depressor of sulfonated melamine-urea-formaldehyde resin s.

采用氧化淀粉和3次投加尿素进行改性的工艺合成了改性磺化三聚氰胺脲醛树脂抑尘剂。

Analyses by FT IR, UF and MUF resins showed similar curve shapes.

加入三聚氰胺改性的UF树脂其表面张力变小。

Then he analyzed the effects of molar ratio of PF and MUF resin, mixture proportion, and hot pressing conditions on viscosity and durability of the modified resin, surface veneer color and bonding performance of the board, and provided the optimum technology parameters for the application of PF resin.

本研究采用三聚氰胺脲醛树脂对PF树脂进行改性，生产浅色改性PF胶粘剂，探讨了MUF与PF树脂摩尔比、混合比、热压条件等对胶液的粘度、缩合度、稳定性、胶层颜色及胶合质量的影响。

The present invention adopts polyvinyl perchloride and organosilicon modified acrylic resin as main filming material and adds cyanuramide phosphate and expanding graphite into common polytriammonium phasphate as fireproof assistant to constitute foaming material. The present invention has greatly raised foaming rate and the foamed layer has thickness of 30-50 times the original coating thickness and fireproof limit up to 90 min.

本发明采用高氯化聚乙烯和自行合成的有机硅改性丙烯酸酯树脂为主要成膜物质，并在通常所用的聚磷酸铵类防火助剂的基础上，加入三聚氰胺磷酸盐和可发性膨胀石墨作为发泡材料组成，大大提高了涂层的发泡率，发泡层厚度可达原涂层厚的30～50倍，耐火极限可达90min(涂层厚度2mm)。

In this article we analysed the characteristic of two kinds of modified melamine resin fiber which are PVA and Resorcin modified melamine resin fiber.

分析了聚乙烯醇和间苯二酚两种改性三聚氰胺树脂纤维在表面结构性能，物理性能，热性能等方面的改进以及固化剂的添加对纤维性能的影响。

The effect of ethanol, urea-formaldehyde resin, melamine and flame retardant of resistance to water and fire was studied.

研究了乙醇、脲醛树脂、三聚氰胺和阻燃剂对涂料耐水、阻燃性能的影响。

The results of the TG and DTG curves show that, in the whole intumescing process, APP, PER and MEL cooperate with each other and synergism is generated; The kind of base resin and its contents, the ratio of the component of fire retardant system and their contents all have great influence on the thermal degradation behaviors of fire retardant coating; The concentration of oxygen has no influence on the thermal degradation of fire retardant coating below 345℃, while the influence can not be neglected above 345℃, but compare with the factors mentioned previously, the influence is small.

研究表明，聚磷酸铵-三聚氰胺-季戊四醇三者能密切配合，对阻燃起到协同作用；基料树脂的种类及含量、阻燃体系配比及含量对防火涂料的热分解行为有较大的影响；氧气浓度在低温阶段(345℃以前)对热解行为几乎没影响，而在高温阶段(345℃以后)则对热解行为有影响，但相对于前面的因素对热解的影响来说，氧气浓度对防火涂料的热解行为影响较小。

A kind of super-thin fire proofing coating for steel structure is prepared,with the mixture of amino resin and acrylic resin as base resin,ammonium polyphosphate、melamine、pentaerythritol as fire retardant system,TiO_2 and SiO_2 as pigment and filling.

选用氨基树脂和丙烯酸树脂混合体系为基料，聚磷酸铵、三聚氰胺、季戊四醇为阻燃体系，钛白粉和硅石粉为颜填料，制备超薄型钢结构防火涂料，并研究了基料、阻燃体系、颜填料用量对防火涂料防火性能的影响。

Microcapsules of E-ink was prepared through in situ polymerization, in which titanium dioxide modified by PMMA was introduced as displaying particles dispersed in carbon dichloride, and urea-formaldehyde resin modified with melamine as wall material. Also, the polymerization process was studied to optimize the reaction conditions.

采用原位聚合法制备了以三聚氰胺改性脉醛树脂为壁材，聚甲基丙烯酸甲酯修饰二氧化钦为显示颗粒，四氯乙烯为分散介质的电子墨水微胶囊，并对制备工艺进行优化。

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。