Figure 2 presents the TGA results of urea and its major decomposition by-products including biuret, CYA, ammelide, ammeline and melamine, which matched with literature reported curves well [2].

In comparison, the CyA triblock copolymers displayed two well-resolved transitions within the testing range, suggesting a phase-separated morphology. The transition at lower temperatures agreed...

2021年2月2日 · Brack et al. (2014) recently developed a reaction mechanism for urea decomposition and formation of biuret, CYA, ammelide, and triuret based on non-ionic species. Their model described well low heating rate TGA data (5–20 °C/min), including the effect of changes in crucible geometry and sample mass.

2004年12月15日 · Our data indicate that at temperatures in excess of 190 °C, cyanuric acid (CYA), ammelide and ammeline are produced primarily from biuret. Biuret itself is a result of prior reaction of cyanic acid, HNCO, with intact urea. Cyanic acid is primarily a result of urea decomposition at temperatures in excess of 152 °C.

2021年5月1日 · The main compositions in the World Harmonized Transient Cycle (WHTC) urea deposits are urea, cyanuric acid (CYA) and ammelide, implying that accelerating the decomposition of these species could prevent the accumulation of urea deposit. CuWTi, Cuβ and CuZSM catalysts could lead to increased yield of CYA during pure urea thermolysis.

CyA triblock copolymers exhibited a cylindrical microphase-separated morphology according to small-angle X-ray scattering. In contrast, UCyA triblock copolymers lacked long-range ordering...

2017年3月28日 · The TGA results indicate that 1) below urea melting temperature (130 °C), the formed urea deposits are still primarily urea; 2) in the temperature range 130-190 °C, urea transforms to a combination of urea, biuret and CYA; 3) above biuret melting temperature (190 °C), CYA is primarily formed with some features of ammelide.

应用TGA技术可以用来测定铁磁性物质的居里点转变温度。 相应地,我们也可以通过居里点转变温度来校正未配有DTA或SDTA的热天平温度。

热重分析（TGA）在专业领域扮演着至关重要的角色。 该技术通过精确测量样品在受控温度变化下的质量变化，来分析材料的热稳定性、分解行为和成分分析。

2025年3月10日 · ChemicalBook 致力于为化学行业用户提供2-TRITYLSULFANYLACETIC ACID的性质、化学式、分子式、比重、密度,同时也包括2-TRITYLSULFANYLACETIC ACID的沸点、熔点、MSDS、用途、作用、毒性、价格、生产厂家、用途、上游原料、下游产品等信息。