广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2015年
10期
131-133
,共3页
差示扫描量热仪%聚丙烯%熔点%不确定度
差示掃描量熱儀%聚丙烯%鎔點%不確定度
차시소묘량열의%취병희%용점%불학정도
DSC%PP%melting point%uncertainty
差示扫描量热仪( Differential Scanning Calorimeter, DSC)在测量高聚物的熔融、玻璃化转变温度等方面具有重要作用。国内一般采用GB/T 19466.3-2004中的方法来测定高聚物熔点,但此标准中并没有给出测量方法精密度,因此对DSC测量熔点的测量不确定度进行评定是非常必要的。本文通过DSC测定聚丙烯( Polypropylene, PP)熔点,讨论了测定过程中标准物质的标准值、样品均匀性以及仪器本身和重复测量等对测试结果的影响,并计算出DSC测定PP熔点的不确定度。
差示掃描量熱儀( Differential Scanning Calorimeter, DSC)在測量高聚物的鎔融、玻璃化轉變溫度等方麵具有重要作用。國內一般採用GB/T 19466.3-2004中的方法來測定高聚物鎔點,但此標準中併沒有給齣測量方法精密度,因此對DSC測量鎔點的測量不確定度進行評定是非常必要的。本文通過DSC測定聚丙烯( Polypropylene, PP)鎔點,討論瞭測定過程中標準物質的標準值、樣品均勻性以及儀器本身和重複測量等對測試結果的影響,併計算齣DSC測定PP鎔點的不確定度。
차시소묘량열의( Differential Scanning Calorimeter, DSC)재측량고취물적용융、파리화전변온도등방면구유중요작용。국내일반채용GB/T 19466.3-2004중적방법래측정고취물용점,단차표준중병몰유급출측량방법정밀도,인차대DSC측량용점적측량불학정도진행평정시비상필요적。본문통과DSC측정취병희( Polypropylene, PP)용점,토론료측정과정중표준물질적표준치、양품균균성이급의기본신화중복측량등대측시결과적영향,병계산출DSC측정PP용점적불학정도。
The Differential Scanning Calorimeter ( DSC ) plays a important role in the measurement of polymer in melting point, the glass transition temperature etc. The method of GB/T 19466. 3-2004 to determination of melting point of polymer is generally used. The precision of instrument analysis is not given in this standard. It is very important to evaluate the uncertainty of measurement of melting point by DSC. Melting point of PP had been measured by DSC, the reference material, the sample homogeneity, the instrument and the repeated measurement were discussed in affecting the test results. The measurement uncertainty of PP melting point by DSC had been evaluated.
