SANS 1133:1997
塑料．热塑塑料的熔体质量流动速率和体积流动速率的测定

2008-03

塑料．热塑塑料的熔体质量流动速率和体积流动速率的测定 是非强制性国家标准，您可以免费下载预览页

非常抱歉，我们暂时无法提供预览，您可以试试：免费下载 SANS 1133:1997 前三页，或者稍后再访问。

您也可以尝试购买此标准，
点击右侧 “购买” 按钮开始采购（由第三方提供）。

注意：点击下载后，生成下载文件时间比较长，请耐心等待......

适用范围: This International Standard specifies a method for the determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastic materials under specified conditions of temperature and load. Normally, the test conditions for measurement of melt flow rate are specified in the material standard with a reference to this International Standard. The test conditions normally used for thermoplastics are listed in annexes A and B. The melt volume-flow rate will normally be found useful when comparing filled and unfilled thermoplastics. The melt flow rate can now be determined by automatic measurement provided the melt density at the test temperature is known. This method is not applicable to thermoplastics for which the rheological behaviour is affected by phenomena such as hydrolysis, condensation or crosslinking. 2 The melt mass-flow rate and melt volume-flow rate of thermoplastics are dependent on the rate of shear. The rates of shear in this test are much smaller than those used under normal conditions of fabrication, and therefore data obtained by this method for various thermoplastics may not always correlate with their behaviour in actual use. Both methods are useful in quality control.

SANS 1133:1997塑料．热塑塑料的熔体质量流动速率和体积流动速率的测定