XWJ—600B玻璃化溫度測定儀
XWJ—600B玻璃化溫度測定儀是由系統機控制,使試樣在爐體內以一定的加熱(制冷)速率加熱(制冷)試樣,使試樣在恒定的較小的負荷下隨溫度升高(降低)發生形變,測量試樣溫度—形變曲線并通過分析該試樣的溫度—形變曲線,研究高分子材料力學性能的儀器。它能夠測定材料在等速升溫條件下的溫度、變形曲線,從而確定材料的玻璃化溫度Tg和流動溫度Tf。它能測量各種材料的熱膨脹系數,從而確定這些材料的點,燒結過程、收縮率、熱膨脹等特性。可廣泛應用于高分子及其合成材料、藥物、陶瓷等材料的科研和生產中。
該儀器符合國家標準GB/T 11998塑料玻璃化溫度測定方法 熱機械分析法
1.工作原理
聚合物試樣隨溫度上升,從玻璃態轉變為高彈態,從高彈態轉變為流動態。試樣的高彈態和流動態是可以通過形變過程而確定的。所以該機的工作原理就是通過鉑電阻Pt100感溫元件測量爐內的溫度,由PLC進行PID運算,控制加熱部件或制冷單元,達到等速升溫的目的。形變由數顯百分表顯示并輸出位移信號上傳至PC機,PC機繪制溫度-變形曲線。最后通過在溫度-變形曲線上找到拐點得到Tg和Tf值。
對應于拉伸、針入等不同的實驗形式,將高分子材料制成標準尺寸的試樣,放入對應的試樣安裝架中,一同裝入控溫爐。通過電加熱器或液氮流、高精度控溫傳感器、計算機系統組成控溫系統,控制保溫爐的溫度及升、降溫速率,并實時監測試樣的溫度。通過加載桿、砝碼對試樣施加恒定的試驗力。通過數顯千分表實時測定試樣的形變量。具有一機多用,靈活方便的特點。
2.技術指標
3.1 實驗艙溫度
3.1.1 實驗艙溫度范圍:-196℃~500℃
3.1.2 實驗艙溫度控制范圍:-70℃~500℃(帶制冷)
3.1.3 溫度準確度:±0.5℃
3.1.4 升溫速率:0.5℃/ min~5℃/ min
降溫速率:-0.5℃/ min~-2℃/ min。(帶制冷)
3.1.5 控溫元件:Pt100
3.1.6 爐腔測溫單元:熱電偶T
3.1.7 溫度分辨率:0.1℃
3.2 試樣變形位移測量
3.2.1位移有效測量范圍:5mm
3.2.2 位移測量分辨率:0.001mm
3.2.3 位移測量準確度:±0.005mm
3.2.4 數字千分表顯示,RS232串口數據輸出
3.3 載荷部分
3.3.1 加載桿質量:260g
3.3.2 砝碼:300g、500g、1000g、1500g
3.4 時間顯示
內部時鐘自動計算,時間誤差:±1s/h
3.5 加熱部分
采用固態繼電器控制的電阻絲加熱
3.5.1 加熱電壓:AC220V,50Hz
3.5.1 加熱功率:800W
3.6 制冷部分
3.6.1 制冷劑:液態氮,理論溫度值:-196℃
3.6.2 制冷瓶容積:30L
3.6.3氣泵流量:37L/min
3.6.4 罐體壓力:0.16Mpa
3.6.5 工作壓力:0.03~0.08Mpa
3.6.6 控制開關:低溫電磁閥
3.7 試驗方式
拉伸,彎曲,壓縮,針入,
3.7.1 拉伸試樣:
3.7.1.1 夾持厚度:<3 mm
3.7.2 彎曲試樣:
3.7.2.1 彎曲壓頭半徑:R3.0±0.10 mm
3.7.2.2 彎曲支點半徑:R3.0±0.10 mm
3.7.2.3彎曲支座間距:15.0 mm
3.7.3 壓縮試驗:
3.7.3.1 壓頭面積:12.56mm2
3.7.3.2 壓頭直徑:Φ4.0±0.05 mm
3.7.4 針入試驗
3.7.4.1 針頭面積:1.00 mm2
3.7.4.2 針頭直徑:Φ1.13±0.05 mm
3.7.5 膨脹試驗
3.8 總電源功率:1000W
3.9 電 源:220V±10%,50Hz
3.10 儀器外型尺寸:350mm×300 mm×600 mm
3.11 儀器重量:約 10kg
本公司供應萬吉熱機分析儀質量保證,洽談。
Said engine analyzer products
Engine analyzer is machine controlled by a computer system, is the study of polymer materials mechanical properties of the instrument, it can measure the 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 (standards: GB11998).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.
Main engine analyzer performance indicators:
Low measurement form:
1, compression, bending, stretching, through four stress form;2, expansion deformation
Low temperature range:
1, 35 ℃ low temperature furnace: - - room temperature;2, high temperature furnace: at room temperature to 500 ℃
Low rise and cooling rate:
1, warming: 0.5-5 ℃ / min;1, 2, 5 ℃ / min (commonly used high temperature furnace with)
2, cool: - 0.5-2 ℃ / min;1.2 ℃ / min (commonly used low temperature furnace with)
Low heat engine analyzer deformation measurement range:
1, for compression, bending, stretching, through four test of 0-2.5 mm;2, for expansive deformation test of 0-0.5 mm
The computer system software to realize the function of:
Low temperature real-time display test - deformation curve
Low real-time display test temperature - time curve
Low for compression test and penetration test can automatically calculate the glass transition temperature
And flow temperature
Low for expansion test can automatically calculate the coefficient of expansion
Low print test curve and test report
Low at any time to access and view all previous test curve
Low test curve calculation of TG and Tf can real-time display and hide
When using password protection
Low to meet the requirements of gb standard style can be arbitrary choice
Automatic removal of software digital filter, false signals
Low automatic error correction
Arriving or low test limit temperature, lower limit temperature alarm
Low system date and time Settings
Good openness, easy to transplant and extensions
Our company supply his engine analyzer, quality assurance, welcome consultation discussion.