濕度與時(shí)間因素對高分子材料力學(xué)性能影響的研究.pdf

1、天津大學(xué)碩士學(xué)位論文濕度與時(shí)間因素對高分子材料力學(xué)性能影響的研究姓名：鄭高飛申請學(xué)位級(jí)別：碩士專業(yè)：固體力學(xué)指導(dǎo)教師：亢一瀾20021201————壘星塑塑——ABSTRACT1’heapplicationofmacromoleculepolymerinthefieldsofmicroelectronicsandelectronicpackageiswiderandwiderinrecent)earsThesizeofpartsinth

2、esefieldsisverysmallandthesurfaceislarge，soitwiltbeeasytobeeffeetedbytheenvironmentforthematerialinthesefields，Thepartofmaeromoteculepolymeristime—dependentmaterialanditsmaterialpropertiesaresensitiveforsomeenvironmentss

3、uchasmoistureandtemperatureAtthesametimetheinfluenceofenvironmentforthematerialpropertiesisabasalprobleminagingofmacromoleculepolymerSoitissignificativetostudytheeffectofmoistureandtemperatureforthematerialproperties。The

4、researchingworkinthefieldsformoistureisgetmoreattentionrecentlybecausetherearesomeessentialproblemsneedstobesolved，InthispapertheinfluenceofmoistureforthepropertiesofmacromoleculepolymerisstudiedbyexperimentalmethodAndth

5、eequivalencebetweenmoistureandtimeofmacromolecutepolymerisalsostudied。Themoisturecontentofmaterialleadsto疆鞋changeofmaterialproperties，butmostpartofexperimentalworkarefocusontheeffectofhumidityofenvironmentbecauseofsomedi

6、蹦cultyintestingInthispaper，themoisturecontentisselectedandaseriesofexperimentalpr西ectaboutmoistureandtimeeffectformaterialpropertiesissetup，TheexperimentalresultsanalysisofmoistureandmoisturettimesuperpositionforNylon一6i

7、scarriedoutsystematicallyTheresultoftensiletestingindicatesthattheeffectofmoistureformaterialpropertyisobviousWiththeincreaseofmoisturethestrengthofmaterialwillbelowet，F(xiàn)orexampleelasticmodulus，elasticlimitandyieldlimitar

8、ealldecreasedwiththeincreaseofmoisture。TheeffectofmoistureforsmalldeformaltionsinelasticityisobviousthanlargedeformationinplasticitytWiththeincreaseofmoisture，theeffectofincreaseofmoistureformoduleisweak；theresultoftheex