采用响应面法研究制备工艺对对位芳纶纸吸收性的影响

Study on Absorbability of PPTA Paper Based on Response Surface Methodology

关键词:  对位芳纶纸  热压  响应面法  吸收性

Key Words:PPTA paper  hot pressing  response surface methodology  absorbability

摘要:采用响应面分析法研究制备工艺对对位芳纶纸吸收性能的影响，考察了热压温度、热压压力、短纤配比和浆粕打浆度4因素与对位芳纶纸吸收性能的相关性及其规律。结果表明,热压压力、热压温度和短纤配比对对位芳纶纸的吸收性均有非常显著的影响，热压温度和热压压力与对位芳纶纸的吸收性呈负相关，而短纤配比则与之呈正相关。通过优化多元回归结果建立对位芳纶纸的吸收性与制备工艺的二次多项式回归模型，模型回归显著（R₂=0.9060），可以用于对位芳纶纸吸收性能的分析和预测。

Abstract:Response surface methodology (RSM) was used to investigate the influence of preparation technology of PPTA (poly (p-phenylene terephthalamide)) paper on its absorbability. The technological parameters such as hot pressing temperature, hot pressing pressure, proportion of PPTA short-cut fiber and beating degree of PPTA-pulp were selected as four independent variables. The correlation between the absorbability and the above four factors was studied. The results showed that the liner and quadratic terms of hot pressing pressure, hot pressing temperature and proportion of PPTA short-cut fiber had highly significant effects on the absorbability of PPTA paper. There was negative correlation between the absorbability of PPTA paper and hot pressing temperature and pressure; meanwhile the positive correlation between the absorbability of PPTA paper and the proportion of PPTA short-cut fiber was found. The quadratic formula was obtained by optimizing the second-order polynomial model. The regression analysis showed that the model possessed higher regression rate (R2=0.9060), having higher coincide degree with the experimental results. This model could be used to analyze and predict the absorbability of PPTA paper.