三聚氰胺 ( 別名蜜胺、三聚氰酰胺, melamine cyanurtriamide) 分子式 C3H6N6 ,相對(duì)分子質(zhì)量 126.12 。為白色單斜晶體,不能燃燒。相對(duì)密度 l.573 ,熔點(diǎn) 354 ℃ ,加熱時(shí)升華。微溶于水、乙二醇、甘油及吡啶,溶于熱水,不溶于苯、乙醚和四氯化碳等。是生產(chǎn)磺化三聚氰胺甲醛樹脂高效減水劑的原料。
三聚氰胺,學(xué)名三氨三嗪,白色單斜晶體,是一種以尿素為原料的重要的氮雜環(huán)有機(jī)化工中間體。
水泥添加劑
用三聚氰胺磺酸鹽甲醛縮合物對(duì)水泥混凝土改性,加強(qiáng)水泥沙漿的粘力和彈性,與水泥的水化產(chǎn)物結(jié)合摻量小、減水率高、適應(yīng)性好,同時(shí)也具有傳統(tǒng)產(chǎn)品的混凝土后期收縮小、制品光亮、低堿含量、早強(qiáng)宜蒸養(yǎng)、表面光亮等多種功能特性。
三聚氰胺阻燃劑
三聚氰胺和三聚氰酸用溶劑法生產(chǎn)的三聚氰胺氰尿酸鹽 MCA ,是一種可替代溴系阻燃劑和阻燃劑的無(wú)鹵氮系阻燃劑,生產(chǎn)成本極低、電性能優(yōu)越、機(jī)械性能及著色性能良好,應(yīng)用于阻燃尼龍 6 和尼龍 66 ,可達(dá)到 UL 94V-0 級(jí)的阻燃效果,在電子電器行業(yè)中具有良好的發(fā)展前景。
三聚氰胺作為現(xiàn)階段的清潔化工原料,與人們的生活密切相關(guān),市場(chǎng)潛力很大,其生產(chǎn)方法和工藝流程有多種,并各有特點(diǎn)。根據(jù)熔融尿素?zé)峤獾膲毫Σ煌蛩胤ㄉa(chǎn)三聚氰胺的分為高壓法、中壓法和常壓法。本文詳細(xì)地介紹了這三種方法及使用該方法生產(chǎn)三聚氰胺的廠家,并對(duì)三種方法的應(yīng)用進(jìn)行了分析,指出了三種方法的優(yōu)點(diǎn)和缺點(diǎn)及各廠家的技術(shù)改造。
[ 關(guān)鍵詞 ] 三聚氰胺;方法;工藝技術(shù);應(yīng)用分析
As the cleaning chemical raw, the cyanuramide is closely related with people's lives now. It has great market potential. Its production methods and process are various and have their own characteristics. Because the pyrolysis pressure of melting urea is different, the ways of producing cyanuramide by urea divide into hith-pressure, medium-pressure and ordinary pressure. This paper introduced these three methods in detail and the manufacturers of producing cyanuramide im this way, analyzed the use of three methods, pointed out their the advantages, weaknesses and the technological transformation of various manufacturers.
Keywords: cyanuramide; method; craft technology; applied analysis.
三聚氰胺的生產(chǎn)方法按原料分為雙氰胺法和尿素法,雙氰胺法現(xiàn)在已經(jīng)被淘汰,尿素法就是通過(guò)尿素?zé)峤馍扇矍璋??;瘜W(xué)反應(yīng)原理為:在加熱和一定壓力條件下, 6mol 尿素生成 1mol 三聚氰胺,同時(shí)副產(chǎn) 3mol 二氧化碳和 6mol 氨。反應(yīng)方程式為:
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產(chǎn)品用途:
三聚氰胺是一種重要的有機(jī)化學(xué)中間產(chǎn)品。與甲醛縮合生成三聚氰胺甲醛樹脂 ( 蜜胺樹脂 ) ,它具有無(wú)毒、耐熱、耐老化、高光澤、良好的電絕緣優(yōu)點(diǎn)。廣泛應(yīng)用于塑料加行業(yè),也是涂料、造紙、紡織、油漆、皮革加工等行業(yè)的化工原材料。
國(guó)標(biāo): GB/9576 — 1997
包裝 :
每袋重 20kg 復(fù)合編織袋或純牛皮紙袋包裝,也可按用戶需要提供其它類型包裝。
儲(chǔ)存:
存放于陰涼通風(fēng)處。不可與酸類和氧化劑共儲(chǔ)混運(yùn)。
Product usage:
Melamine is a kind of important organic chemical intermediate product . which can generate melamine-formaldehyde, resin(melamine resin)after condensing with formaldehyde . It owns a merit of nonpoisonous , heat-resisting , age-resisting , high luster and electric isolation . It is widely used in the field of plastic and wood processing industry and also be the raw chemical material of coating , papermaking , textile , painting , leather processing industry .
National Standard:
Package : GB/9576 — 1997
There are 20kg per bag which are compound knitting bag or pure kraft paper bag . According to client 。 S requirement , we can provide other type of package .
Storage and Transportation :
Store in cool and ventilating place . Do not transport and store together with acid and oxidant .