近红外漫反射光谱技术在预浸布质量指标在线测定中的应用  

Application of near infrared diffuse reflection spectrum in on-line determination of prepreg cloth quality index

作　　者：李伟[1] 黄玉东[1] 张翔[2] 杨晓军[2] 刘丽[1] 姜波[1] 

机构地区：[1]哈尔滨工业大学应用化学系,哈尔滨150001 [2]中国航天科技集团公司四院四十三所,西安710025

出　　处：《固体火箭技术》2006年第1期75-78,共4页Journal of Solid Rocket Technology

摘　　要：采用近红外漫反射光谱技术对高硅氧/酚醛预浸布的树脂含量、挥发分含量和预固化度等质量指标进行了在线测定。利用偏最小二乘法所建立的树脂含量、挥发分含量和预固化度模型的决定系数R2分别为99.20、99.14和99.11,交叉验证均方差RMSECV分别为0.298、0.144和0.124。利用外部验证集,对模型进行t-检验,在给定显著性水平0.05的情况下,近红外的测定结果和标准方法的测定结果对比,两者不存在显著性差异。该方法在预浸布生产线的应用,为其生产过程中的质量控制提供了一种有效的分析手段。The resin content, the volatile content and the pre-curing degree of the silica/phenolic resin prepreg cloth were on line determined by near infrared diffuse reflection spectrum. The determinative coefficients （R^2 ） of calibration models of the resin content,the volatile content and the pre-curing degree derived by the partial least square method are 99.20,99.14 and 99.11 respectively; root mean square errors of cross-verification （RMSECV） are 0. 298,0. 144 and 0. 124 respectively. Based on external verificaion samples,the model was analyzed by means of t-verification. Under the given significance level （ at 0.05） condition, determination results of near infrared diffuse reflection spectrum method was compared with that of standard method, and there exists no significance difference. The application of near diffuse reflection spectrum method in production line of prepreg cloth can provide an effective method for quality control in the course of production.

关 键 词：近红外光谱 在线监测 预浸材料 树脂含量 挥发分含量 预固化度 

分 类 号：TB332[一般工业技术—材料科学与工程]