材料期刊网

对国内某合成橡胶厂生产的聚丁二烯橡胶( BR)9000产品进行生胶性能检验,分别绘制挥发分、灰分、生胶门尼粘度等技术指标的X-R(或S)控制图,根据控制图可以看出聚丁二烯橡胶的挥发分、灰分、生胶门尼粘度的检验结果处于良好的受控状态,实验室有较高的系统控制能力和随机控制能力,检验结果准确可靠。应用X-R(或S)控制图,测定聚丁二烯橡胶挥发分时,系统误差控制在±0．11%范围,随机误差应小于0．28%,标准偏差应小于0．15%；测定聚丁二烯橡胶灰分时,系统误差控制在±0．02%范围,随机误差应小于0．05%,标准偏差应小于0．03%；测定聚丁二烯橡胶门尼粘度时,系统误差控制在±2范围,随机误差应小于5．1,标准偏差应小于2．6。

The raw rubber performance of butadiene rubber ( BR) 9000 producted by a domestic synthetic rub-ber factory was tested and the X-R ( or S) control charts of volatile matter content,ash content and raw rubber Moo-ney viscosity were drawn,respectively. According to the control charts,the test results of the volatile matter content, ash content and raw rubber Mooney viscosity of butadiene rubber were in a good control condition and the results were accurate and reliable,which means the laboratory had higher system control ability and stochastic control abili-ty. Using the X-R ( or S) control charts,the system error was controlled in the range of ± 0. 11%,the random error should be less than 0. 28% and the standard deviation should be less than 0. 15% when the volatile matter content was determined;the system error was controlled in the range of ± 0. 02%, the random error should be less than 0. 05% and the standard deviation should be less than 0. 03% when the ash content was determined;the system er-ror was controlled in the range of ± 2,the random error should be less than 5. 1 and the standard deviation should be less than 2. 6 when the Mooney viscosity was determined.