GB-T 3682-2000 熱塑性塑料熔體質量流動速率和熔體體積流動速率的測定

一、主要用途及適用范圍
    本儀器適用于GB/T 3682熱塑性塑料熔體流動速率試驗方法。本儀器是用來測定各種高聚物在粘流狀態時熔體流動速率，它既適用于熔融溫度較高的聚碳酸酯、聚芳砜、氟塑料、尼龍等工程塑料，也適用聚乙烯、聚苯乙烯、聚丙烯、ABS樹脂、聚甲醛樹脂等熔融溫度較低的塑料測試，廣泛地應用于塑料生產、塑料制品、石油化工等行業以及有關院校、科研單位和商檢部門。
    該機恒溫中具有如下特點：
    ①升溫速度快、超調量極小；
    ②恒溫精度高；
    ③在填料之后能迅速恢復恒溫狀態；
    ④本機具有自動/手(shou)動兩種功能。

二、工作原理
   熔體(ti)流動(dong)速率儀(yi)是(shi)指(zhi)熱塑性塑料在一(yi)定溫度和(he)負荷下，熔體(ti)每(mei)10min通過標準口模的(de)重(zhong)量或體(ti)積(ji)，用MFR來(lai)表示(shi)(shi)，其數值可以(yi)表示(shi)(shi)熱塑性塑料在熔融狀態時的(de)粘流特(te)性。

三、工作條件
  ①室溫10℃-40℃的范圍內；
  ②環境濕度在30%-80%以內；
  ③周圍無震動，無腐蝕性介質的環境中；
  ④在穩固的基礎上正確地安裝并調至水平；
  ⑤工作時無強磁場干擾，周圍空氣無強對流；
  ⑥電(dian)(dian)源電(dian)(dian)壓220V，頻率50Hz，電(dian)(dian)源電(dian)(dian)壓的(de)波動范圍不應超過(guo)額(e)定(ding)電(dian)(dian)壓的(de)±10%

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