仪器分类
Thermogravimetric Analysis_同步热分析仪
Thermogravimetric Analysis_同步热分析仪
仪器编号
81118
SN序列号
HTP40000A28-4401
生产厂家
Netzsch
型号
STA449F5
制造国家
Germany
分类号
03030215
放置地点
Public BuildingP202
购置日期
2022-07-01
入网日期
2023-01-05

主要规格及技术指标

Temperature Range: RT...1600°C (sample temperature)
Furnace: SiC furnace body, motor-driven automatic lifting system for convenient and safe operation
Heating Rate: 0.001 ... 50 K/min
Sensor: TGA-DSC
Vacuum Tightness: 10⁻² mbar
Atmosphere: Nitrogen
Gas Flow Control: Integrated 3-channel mass flow controller (1 protective gas, 2 purge gases)
Temperature Resolution: 0.001 K
Balance Resolution: 0.1 μg (full measuring range)
BeFlat® Technology: Built-in automatic correction for buoyancy effects related to crucible type, atmosphere, heating rate, etc., ensuring flat baselines
Balance Drift: < 5 μg/h
Maximum Sample Weight: 35,000 mg (including crucible), corresponding to TGA measurement range
Sample Volume: Up to 5 cm³
Enthalpy Accuracy: 1% (In)

温度范围:RT...1600℃(样品温度)
炉体:SiC 炉体,马达驱动自动升降,操作方便而安全
升温速率:0.001 ... 50K/min
传感器: TGA-DSC
真空密闭性:10-2 mbar
气氛:氮气
气体流量控制:集成 3 路质量流量计(1 路保护气,2 路吹扫气)
温度解析度:0.001 K
天平解析度:0.1 μg(全量程范围)
BeFlat®:内置,自动修正与坩埚类型、气氛、升温速率等因素相关的浮力效应,以获取平整的基线
天平漂移:< 5 μg / h
最大样品称重量:35000 mg(包括坩埚),相应于 TGA 测量范围
样品体积:最大 5 cm³
热焓精确度:1% (In)

主要功能及特色

DSC measures the heat flow difference between a sample and reference material under controlled temperature programming, detecting endothermic/exothermic events and heat capacity changes during thermal processes. It quantifies enthalpy changes and characterizes transition temperatures.
TGA monitors sample mass variation under programmed temperature conditions, determining weight loss percentage, decomposition temperatures, and residual mass.
STA integrates TGA and DSC into one instrument, enabling simultaneous measurement of mass changes and heat flow using a single sample.

差示扫描量热法(Differential Scanning Calorimetry,简称DSC)为使样品处于一定的温度程序控制下,观察样品端和参比端的热流功率差随温度或时间的变化过程,以此获取样品在温度程序过程中的吸热、放热、比热变化等相关热效应信息,计算热效应的吸放热量与特征温度。
热重分析法(Thermogravimetry Analysis,简称TG 或TGA)为使样品处于一定的温度程序控制下,观察样品的质量随温度或时间的变化过程,获取失重比例、失重温度、以及分解残留量等相关信息。
同步热分析(Simultaneous Thermal Analysis,简称STA)将热重分析TG 与差示扫描量热DSC结合为一体,在同一次测量中利用同一样品可同步得到质量变化与吸放热相关信息。

主要附件及配置

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