热机分析仪是由系统机控制，使试样在炉体内以一定的加热（制冷）速率加热（制冷）试样，使试样在恒定的较小的负荷下随温度升高（降低）发生形变，测量试样温度—形变曲线并通过分析该试样的温度—形变曲线，研究高分子材料力学性能的仪器。它能够测定材料在等速升温条件下的温度、变形曲线，从而确定材料的玻璃化温度Tg和流动温度Tf。它能测量各种材料的热膨胀系数，从而确定这些材料的变态点，烧结过程、收缩率、热膨胀等特性。可广泛应用于高分子及其合成材料、药物、陶瓷等材料的科研和生产中。
该仪器符合国家标准GB11998—XXXX
1.工作原理
聚合物试样随温度上升，从玻璃态转变为高弹态，从高弹态转变为流动态。试样的高弹态和流动态是可以通过形变过程而确定的。所以该机的工作原理就是通过铂电阻Pt100感温元件测量炉内的温度，由PLC进行PID运算，控制加热部件或制冷单元，达到等速升温的目的。形变由数显百分表显示并输出位移信号上传至PC机，PC机绘制温度-变形曲线。最后通过在温度-变形曲线上找到拐点得到Tg和Tf值。
对应于拉伸、针入等不同的实验形式，将高分子材料制成标准尺寸的试样，放入对应的试样安装架中，一同装入控温炉。通过电加热器或液氮流、高精度控温传感器、计算机系统组成控温系统，控制保温炉的温度及升、降温速率，并实时监测试样的温度。通过加载杆、砝码对试样施加恒定的试验力。通过数显千分表实时测定试样的形变量。具有一机多用，灵活方便的特点。
Engine analyzer is controlled by the system machine to make samples in the furnace at a certain rate of heating (cooling) heating (cooling) sample, allow the sample under the load of constant small deformation temperature increase (decrease), measured sample temperature, deformation curve and by analyzing the deformation curve, the temperature of the sample - the high polymer material mechanics performance of the instrument.It is able to determine material under the condition of constant temperature curve of temperature, deformation, so as to determine the glass transition temperature Tg and material flow temperature Tf.It can measure all kinds of material thermal expansion coefficient, to determine the material of the abnormal points, sintering process, shrinkage rate and thermal expansion properties.Can be widely used in polymer and its composite materials, medicines, ceramic materials such as scientific research and production.
The equipment is in line with national standards GB11998 - XXXX
Working principle of the 1.
Polymer samples with the temperature rising, from the glass state into high elastic state, from high elastic state to flow dynamics.Sample of high elastic state and flow dynamic can be determined by deformation process and.So the machine working principle is through the Pt100 platinum resistance sensor element measurement of temperature in the furnace, PID arithmetic by PLC, the control of heating component or refrigeration unit, achieve the goal of constant temperature.Deformation by display dial indicator display and output displacement signal uploaded to PC, PC drawing temperature deformation curve.Finally, on the temperature deformation curve inflection point with Tg and Tf values.
Corresponding to the tensile, such as needle into different forms of experiment, the polymer material standard size sample, into the corresponding sample mounting bracket, together into the furnace temperature control.By electric heater or liquid nitrogen flow, high precision temperature control of sensor, computer system temperature control system, control the temperature of the furnace and rises, cooling rate, and real-time monitor the temperature of the sample.Applying constant by loading rod, weight of sample test.Through digital display micrometer real-time measurement of specimen.The characteristics of a multi-usage, flexible and convenient.
