共查询到19条相似文献,搜索用时 109 毫秒
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三聚氰胺及其衍生物的应用 总被引:2,自引:0,他引:2
三聚氰胺是一种重要的化工原料,其主要应用为:作为阻燃剂用于材料阻燃;合成三聚氰胺甲醛树脂;制备其衍生物。在介绍三聚氰胺特点、三聚氰胺甲醛树脂改性、三聚氰胺衍生物合成的基础上,系统介绍相关应用。 相似文献
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三聚氰胺甲醛泡沫塑料是一种具有良好阻燃、吸音、安全性能的新型材料。介绍了三聚氰胺甲醛树脂的基本合成工艺、以及其泡沫塑料的制备工艺。叙述了三聚氰胺泡沫塑料的国内外研究进展。展望了三聚氰胺甲醛泡沫塑料在建筑、消防和工业领域所具有的广泛应用前景,对其潜在的应用范围进行初步探讨。 相似文献
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三聚氰胺改性脲醛树脂胶(MUF)及其应用工艺 总被引:2,自引:0,他引:2
本文叙述了用三聚氰胺甲醛树脂提高脲醛树脂耐水性的机理;刨花板用三聚氰胺改性脲醛树脂胶粘剂(MUF)的合成工艺;影响MUF耐水性能的因素及对三聚氰胺改性脲醛树脂胶粘剂(MUF)制板工艺的探讨。 相似文献
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《精细与专用化学品》2016,(11)
正三聚氰胺是以尿素和氨为原料生产的化工中间体,可用于合成三聚氰胺甲醛树脂、三聚氰胺泡沫塑料、三聚氰胺尿素共缩合树脂、低取代度羟乙氧乙基三聚氰胺。欧技公司是世界知名三聚氰胺技术许可商、技术供应商和工程承包商,1980年承接了科威特舒艾巴Shuaiba的1.5万t/a三聚氰胺工业设施的EPC合同,采用美国Allied Signal技术设计。1998年欧技公司从美国Allied Signal购买了三聚氰胺技术的知识产权和专利。至今,该公司已经成功开发了代三聚氰胺技术。 相似文献
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Mengshi Lin 《Frontiers of Chemical Engineering in China》2009,3(4):427-435
Melamine, a nitrogen-rich chemical, has received much attention in recent years due to a series of highly publicized food
safety incidents, including 2007 pet food recalls in North America and 2008 melamine contamination in milk, infant formula,
and other milk-derived products in China. Current analytical methods fortesting melamine are time-consuming, expensive, and
labor-intensive. Therefore, there is an increasing interest in the food science and analytical chemistry field to develop
simple, quick, sensitive, and cost-effective methods for detection of melamine and its analogues (e.g., cyanuric acid, melamine
cyanurate, ammelide, and ammeline) in food ingredients, processed food, and animal feed. This review aims to summarize traditional
and novel analytical techniques that have been used or show great potential to detect, characterize, and quantify melamine
and its analogues in foods and animal feed. 相似文献
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三聚氰胺生产现状及市场分析 总被引:1,自引:0,他引:1
三聚氰胺是一种以尿素为原料的重要的氮杂环有机化工中间体,在木材加工、塑料、涂料、减水剂、造纸、粘合剂、纺织、皮革、电器、医药、阻燃剂等行业中应用广泛。经过50年的发展,我国已经成为世界最大的三聚氰胺生产基地和出口国,三聚氰胺产品在国际市场上处于强势地位。简要介绍三聚氰胺的生产工艺、国内概况及发展趋势、应用领域和市场分析等方面的一些情况。 相似文献
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Melamine, a nitrogen-rich chemical, has received much attention in recent years due to a series of highly publicized food safety incidents, including 2007 pet food recalls in North America and 2008 melamine contamination in milk, infant formula, and other milk-derived products in China. Current analytical methods for testing melamine are time-consuming, expensive, and labor-intensive. Therefore, there is an increasing interest in the food science and analytical chemistry field to develop simple, quick, sensitive, and cost-effective methods for detection of melamine and its analogues (e.g., cyanuric acid, melamine cyanurate, ammelide, and ammeline) in food ingredients, processed food, and animal feed. This review aims to summarize traditional and novel analytical techniques that have been used or show great potential to detect, characterize, and quantify melamine and its analogues in foods and animal feed. 相似文献
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简要介绍了三聚氰胺的物化性能,重点阐述了三聚氰胺、改性三聚氰胺在聚氨酯阻燃保温泡沫制备中的应用,并提出展望。 相似文献
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Nanoencapsulation mechanism of fragrant oil: effect of formaldehyde − melamine molar ratio
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Camila F Escobar Liane Roldo Tatiana LAC Rocha Wilson Kindlein Jr 《Polymer International》2018,67(2):220-226
Encapsulation of essential oils by in situ polymerization is commonly used to contain the oil and thus ensure its controlled release. Melamine resin formaldehyde is one of the most widely used shell materials due to its thermal and chemical stability. One of the factors that influences the properties of the capsules is the molar relationship between monomers. The effect of formaldehyde ? melamine (F/M) molar ratios 3, 4 and 6 on the nanoencapsulation, morphology and properties of nanocapsules was investigated. The morphology and particle size were investigated by the scanning electron microscopy and atomic force microscopy techniques. The composition of the formaldehyde ? melamine resins was determined by Fourier transform infrared spectroscopy, and the thermal stability of the nanocapsules was analysed by differential scanning calorimetry and thermogravimetric analysis. Increasing the formaldehyde content reduced the nanocapsules' chemical stability. The capsule sizes obtained were nanometric at all melamine ? formaldehyde ratios studied, with a non‐significant variation in particle size and shape. © 2017 Society of Chemical Industry 相似文献
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概述了三聚氰胺树脂纤维的阻燃机制及改性方法,特别对化学改性方法以及化学改性剂的筛选要求进行了介绍,指出改性的目的是在保持其良好的耐高温和阻燃性能的前提下改善三聚氰胺树脂纤维的柔性,提高纤维强度。 相似文献
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介绍蜜胺纤维的物化性能、制造工艺及应用前景,叙述国内外蜜胺纤维研究开发的技术进展,并对蜜胺纤维在国内的发展提出建议。经过多年的研究和开发,目前在国内建设蜜胺纤维工业化生产装置的条件已基本成熟。 相似文献
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三聚氰胺和甲醛在温度为85~95℃、氢氧化钠为催化剂、持续反应3~4h的条件下,可反应生成一种固含量≥65%、化学性能相对稳定的三聚氰胺甲醛树脂。以这种树脂为基体,加入乳化剂、固化剂和发泡剂,经发泡工艺制备出三聚氰胺甲醛泡沫塑料。研究了甲醛/三聚氰胺的摩尔配比(F/M)对可发性三聚氰胺甲醛树脂的物理性能、有毒物质残余量、机械性能的影响,以及与树脂可发性的关系。结果表明,当F/M=3.0时,可发性三聚氰胺甲醛树脂的固含量为69%;黏度为1 280 mPa.s;抗弯曲强度为305.6 kPa;氧指数为40.5%;热释放速率为0.15 kW/m2;烟灰产率仅为2.1 m2/m2;峰值CO产量为0.0292 kg/kg。 相似文献
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