三乙烯二胺
化學(xué)名稱：1,4-二氮雜二環(huán)[2.2.2]辛烷；
別名：固胺、三亞乙基二胺
英文名稱：1,4-Diazabicyclo[2.2.2]octane;triethylenediamine
英文縮寫：DABCO TEDA
分子式：C6H12N2
分子量：112.18
CAS編號：280-57-9
物化性能
三乙烯二胺（TEDA）常態(tài)為無色或白色晶體，暴露在空氣中易吸濕潮解并結(jié)塊，呈堿性，能吸收空氣中的CO2并發(fā)黃。易溶于丙酮、苯及乙醇。純TEDA毒性很小，吸入飽和的三乙烯二胺（TEDA）蒸汽會引起輕微的黏膜刺激，對眼睛有損害，刺激皮膚會引起過敏癥。
相對密度（25℃）：約1.14
純品熔點(diǎn)：158-159℃
閃點(diǎn)：60℃
沸點(diǎn)：174℃，易升華，微有氨味
蒸汽壓：21℃約為67Pa，50℃為533Pa，100℃為7.7kPa
應(yīng)用簡介：
三乙烯二胺（TEDA）是一種雙雜環(huán)結(jié)構(gòu)的叔胺催化劑，主要用于生產(chǎn)聚氨酯泡沫的凝膠催化劑，廣泛用于軟質(zhì)、半硬質(zhì)、硬質(zhì)聚氨酯泡沫塑料、彈性體，此外三乙烯二胺（TEDA）還可用作環(huán)氧樹脂固化催化劑、乙烯聚合催化劑、丙烯腈聚合催化劑乙基環(huán)氧乙烷烴聚合催化劑以及農(nóng)藥的引發(fā)劑和無氫電鍍添加劑等。
三乙烯二胺（TEDA）的化學(xué)結(jié)構(gòu)很獨(dú)特，是一種籠狀化合物，兩個氮原子上連接三個亞乙基。在叔胺催化劑中，三乙烯二胺（TEDA）是最重要的有個品種，可廣泛用于各種聚氨酯泡沫塑料，在一步法發(fā)泡工藝中，三乙烯二胺（TEDA）的重要性尤其顯著。一方面它活性高，用量較小；另一方面它對凝膠反應(yīng)和發(fā)泡反應(yīng)都有較強(qiáng)的催化作用，尤其對聚氨酯與羥基的催化作用選擇性更強(qiáng)。
東莞廣思遠(yuǎn)聚氨酯材料有限公司成立于2009年，深耕于聚氨酯原料的細(xì)分行業(yè)—胺催化劑；研發(fā)并復(fù)配生產(chǎn)各類型胺催化劑，主營產(chǎn)品：胺催化劑9727、胺催化劑CS90、無味胺催化劑ZF-10、無味胺催化劑Z-131、胺催化劑RP-208、DMDEE、三乙烯二胺、催化劑A300、BDMA、催化劑SMP等，產(chǎn)品適用于海綿、模塑、高回彈、自結(jié)皮、PU玩具及各種硬泡和半硬泡等終端產(chǎn)品。
TEDA
Namet: serotonin, TEDA, DABCO ，TRIETHYLENEDIAMINE
Chemical formula: C6H12N2
Physical and chemical properties
Normally, triethylenediamine (TEDA) is colorless or white crystal. When exposed to the air, it is easy to absorb moisture and dehydrate and agglomerate. It is alkaline and can absorb CO2 from the air and turn yellow. Soluble in acetone, benzene and ethanol. Pure TEDA is very toxic, and inhaling saturated triethylenediamine (TEDA) vapors can cause mild mucosal irritation, damage to the eyes, and irritation to the skin that can lead to allergies.
Relative density (25℃) : about 1.14
Melting point of pure product: 158-159℃
Flash: 60 ℃
Boiling point: 174℃, easy to sublimate, slightly ammonia taste
Steam pressure: about 67Pa at 21℃, 533Pa at 50℃, 7.7kPa at 100℃
Application Introduction:
Triethylene diamine (TEDA) is a kind of double heterocyclic structure of the tertiary amine catalysts, mainly for the production of polyurethane foam gel catalyst, widely used in the soft, semi-hard, rigid polyurethane foam plastics, elastomers, and triethylene diamine (TEDA) can also be used for curing epoxy resin catalyst, ethylene polymerization catalyst, polymerization of acrylonitrile catalyst ethyl epoxy b alkane polymerization catalyst and initiator of pesticide and no hydrogen electroplating additive, etc.
The chemical structure of triethylenediamine (TEDA) is unique. It is a cage compound with three ethyl groups attached to two nitrogen atoms. Among tertiary amine catalysts, triethylenediamine (TEDA) is the most important, which can be widely used in various polyurethane foams. In the one-step foaming process, the importance of triethylenediamine (TEDA) is particularly significant. On the one hand, it has high activity and small dosage; On the other hand, it has a strong catalytic effect on both gel reaction and foaming reaction, especially the catalytic effect of polyurethane and hydroxyl is stronger.