[毕业设计精品]酸氧化法改性pet薄膜

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1、毕业论文学生姓名：学号：所在学院：专业：高分子材料与工程设计(论文)题目：酸氧化法改性PET薄膜指导教师：2011年4月~2011年6月本科毕业论文酸氧化法改性PET薄膜摘要聚对苯二甲酸乙二酯(PET)是合成纤维的主要原料之一，它具有耐磨性、耐热性、电绝缘性及耐化学品等优良性能，广泛用于合成涤纶纤维，还可作为工程塑料用于机械、电子、汽车等，在聚酯类产品中占有主导地位，已成为国内外研究的热点。本文主要对PET用硫酸改性方面进行阐述，并对改性后PET做了DSC测定观察其特征温度，红外光谱测量以观察其极性基团，以及改性后PET的拉伸强度以及吸水率的变化。实验结果表明，经酸改性后的PET

2、薄膜，Tm有一定的降低，拉伸强度降低，吸水率增加，PET薄膜的性能有一定的改进。关键词：PET硫酸改性III本科毕业论文ModificationofPETbyacidoxidationtechniqueAbstractPolyethyleneterephthalate(PET)isoneofthemainrawmaterialofsyntheticfibers,ithasawearresistance,heatresistance,electricalinsulationandexcellentchemicalresistanceandotherproperties,arewid

3、elyusedinthesynthesisofpolyesterfibers,andalsoasengineeringplasticsusedinmachinery,electronics,automobiles,etc.,Inthepolyesterproductsithasadominantposition,andhasbecomeahotresearchathomeandabroad.ThispaperfocusesonaspectsofPETmodifiedwithsulfuricacidelaborated,andchangesoftheCharacteristicte

4、mperatureofmodifiedPETbyDSC.Besides,thepolargroupsareobservedbyFTIRmeasurements,aswellasthetensilestrengthofthemodifiedPETaremeasuredbyTensiletestingmachine.TheresultsshowedthattheTmoftheacidmodifiedPETfilmhasacertainreduction.Thetensilestrengthhasalittledecrease,butthewaterabsorptionhasincre

5、aseed.Inconclusion,ThemeanscanimprovetheperformanceofPETfilmintheway.KeyWords:PET；Sulfuricacid；ModificationIII本科毕业论文目录摘要······························································IABSTRACT······················································II第一章绪论·········································

6、·············11.1引言·························································11.2涤纶改性方法·················································11.2.1共混改性··················································11.2.2化学改性··················································21.2.3纳米无机物复合改性·······················

7、·················41.2.4其他改性方法··············································5III本科毕业论文1.3PET的应用···················································61.4立题依据·····················································7第二章PET的酸改性·························