XWJ—600B玻璃化温度测定仪

XWJ—600B玻璃化温度测定仪是由系统机控制，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化温度点，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

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。zui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。

技术指标

3.1 实验舱温度

3.1.1 实验舱温度范围：-196℃～500℃

3.1.2 实验舱温度控制范围：-70℃～500℃（带制冷）

3.1.3 温度准确度：±0.5℃

3.1.4 升温速率：0.5℃/ min～5℃/ min

降温速率：－0.5℃/ min～－2℃/ min。（带制冷）

3.1.5 控温元件：Pt100

3.1.6 炉腔测温单元：热电偶T

3.1.7 温度分辨率：0.1℃

3.2 试样变形位移测量

3.2.1位移有效测量范围：5mm

3.2.2 位移测量分辨率：0.001mm  

3.2.3 位移测量准确度：±0.005mm

3.2.4 数字千分表显示，RS232串口数据输出

3.3 载荷部分

3.3.1 加载杆质量：260g

3.3.2 砝码：300g、500g、1000g、1500g

3.4 时间显示

内部时钟自动计算，时间误差：±1s/h

3.5 加热部分

采用固态继电器控制的电阻丝加热

3.5.1 加热电压：AC220V，50Hz

3.5.1 加热功率：800W

3.6 制冷部分

3.6.1 制冷剂：液态氮，理论温度值：-196℃

3.6.2 制冷瓶容积：30L

3.6.3气泵流量：37L/min

3.6.4 罐体压力：0.16Mpa

3.6.5 工作压力：0.03～0.08Mpa

3.6.6 控制开关：低温电磁阀

3.7 试验方式

拉伸，弯曲，压缩，针入，

3.7.1 拉伸试样：

3.7.1.1 zui大夹持厚度：<3 mm

3.7.2 弯曲试样：

3.7.2.1 弯曲压头半径：R3.0±0.10 mm

3.7.2.2 弯曲支点半径：R3.0±0.10 mm

3.7.2.3弯曲支座间距：15.0 mm

3.7.3 压缩试验：

3.7.3.1 压头面积：12.56mm2

3.7.3.2 压头直径：Φ4.0±0.05 mm

3.7.4 针入试验

3.7.4.1 针头面积：1.00 mm2

3.7.4.2 针头直径：Φ1.13±0.05 mm

3.7.5 膨胀试验

3.8 总电源功率：1000W

3.9 电    源：220V±10%，50Hz

3.10 仪器外型尺寸：350mm×300 mm×600 mm

3.11 仪器重量：约 10kg

Xwj-600b glass temperature tester

XWJ - 600 b glass transition temperature meter is controlled by the system machine, make the 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 can determine the temperature and deformation curve of the material under the uniform temperature heating conditions, so as to determine the glass temperature Tg and the flow temperature Tf.
It can measure the thermal expansion coefficient of various materials, thus determining the temperature point, sintering process, shrinkage rate and thermal expansion of these materials.
It can be widely used in the research and production of polymer and its synthetic materials, drugs and ceramics.

The instrument conforms to the national standard gb11998-xxxx

Working principle

As the temperature rises, the polymer samples are converted from the glass to high-elastic states and from the high elastic state to the flow dynamics.
The high elastic and flow dynamics of samples can be determined by the deformation process.
Therefore, the working principle of this machine is to measure the temperature in the furnace through the Pt100 of the platinum resistance Pt100, and the PID operation of the PLC is carried out to control the heating parts or the cooling unit, which can achieve the purpose of equivelocity heating.
The deformation is displayed by the digital display and the output displacement signal is uploaded to the PC, and the PC draws temperature - deformation curve.
The Tg and Tf values were obtained by finding an inflection point on the temperature-deformation curve.

Corresponding to the different forms of experiment, such as stretching and needle entry, the polymer material is made into a standard size sample and put into the corresponding sample mounting rack to load the temperature control furnace together.
The temperature and temperature rise and cooling rate of the insulation furnace are controlled by electric heater or liquid nitrogen flow, high precision temperature control sensor and computer system, and the temperature of the sample is monitored in real time.
The constant test force is applied to the sample by loading the rod and weight.
The shape variables of the sample are measured in real time by means of digital display micrometer.
It has a multi-purpose, flexible and convenient feature.

Technical indicators

3.1 experimental cabin temperature

3.1.1 lab temperature range: - 196 ℃ ~ 500 ℃

3.1.2 lab temperature control range: - 70 ℃ ~ 500 ℃ (refrigeration)

3.1.3 temperature accuracy: plus or minus 0.5 ℃

3.1.4 heating rate: 0.5 ℃ / min ~ 5 ℃ / min

Cooling rate: 0.5 ℃ / min ~ - 2 ℃ / min.
(with refrigeration)

3.1.5 temperature control element: Pt100

3.1.6 chamber temperature measurement unit: thermocouple T

3.1.7 temperature resolution: 0.1 ℃

3.2 deformation displacement measurement of samples

3.2.1 displacement effective measurement range: 5mm

3.2.2 displacement measurement resolution: 0.001mm

3.2.3 displacement measurement accuracy: plus or minus 0.005mm

3.2.4 digital micrometer display, RS232 serial port data output

3.3 load part

3.3.1 loading bar quality: 260g

3.3.2 weight: 300g, 500g, 1000g, 1500g

3.4 time display

Internal clock is automatically calculated, time error: plus or minus 1s/h

3.5 heating part

The resistance wire controlled by a solid state relay is heated

3.5.1 heating voltage: AC220V, 50Hz

3.5.1 heating power: 800W

3.6 refrigeration part

3.6.1 refrigerants, liquid nitrogen, theoretical temperature: - 196 ℃

3.6.2 refrigerator volume: 30L

3.6.3 air pump flow: 37L/min

3.6.4 tank pressure: 0.16Mpa

Work pressure: 0.03 ~ 0.08Mpa

3.6.6 control switch: low temperature solenoid valve

3.7 test mode

Stretch, bend, compress, needle in,

3.7.1 tensile test sample:

3.7.1.1 maximum clamping thickness: <3 mm

3.7.2 bending specimen:

3.7.2.1 bending head radius: R3.0 or minus 0.10 mm

3.7.2.2 bending point radius: R3.0 plus or minus 0.10 mm

3.7.2.3 bending support spacing: 15.0mm

3.7.3 compression test:

3.7.3.1 head area: 12.56mm2

3.7.3.2 pressure head diameter: Φ 4.0 + / - 0.05 mm

3.7.4 needle test

3.7.4.1 needle area: 1.00 mm2

3.7.4.2 needle diameter: Φ 1.13 + / - 0.05 mm

3.7.5 expansion test

3.8 total power supply: 1000W

3.9 source: 220V plus or minus 10%, 50Hz

3.10 external dimensions: 350mm x 300 mm x 600 mm

3.11 instrument weight: about 10kg