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1、高聚物合成工艺学(专业课)(Synthetictechnologyofpolymers(specializedcourses))Radioexamination----------------------------------------------------------------------------------------------------1.styrenephysicalproperties:boilingpoint145.15degrees;freezingpoint-30.6DEGC;polym
2、erizationheat67kj/gpolymerizationvolumeshrinkagerate.Thecorrectanswer:C.17%3.,theperformanceofengineeringplasticsis().Thecorrectanswer:D.ormore5.prepareunsaturatedpolyesterresinwith(section)temperature.Thecorrectanswer:B.two7.,themonomeryieldofthermaldegradation
3、offormaldehydeisupto().Thecorrectanswer:D.100%Amultiple-choicequestion----------------------------------------------------------------------------------------------------1.ofthermosettinggeneralpurposeplastics.Correctanswer:B.phenolicresin,C.epoxyresin,D.unsatur
4、atedpolyesterresin2.ofthefollowingcategoriesofPVCproductsareavailable.Thecorrectanswer:A.film,B.sheet,C.,artificialleather,D.foam3.ofthefollowingnaturalorganicmaterialsare().Thecorrectanswer:A.silk,B.wool,C.cotton,D.leatherThepropertiesofthe4.,whichbelongtouncur
5、edepoxyresins,have().Thecorrectanswer:A.epoxyequivalent,B.epoxyvalue,C.color,density,hydrolyzablechloridecontent,D.volatilebeam5.PTFEapplicationsinclude().Thecorrectanswer:A.circuitboard,B.gasket,C.anti-corrosioncoating,D.disinfectionfilterdish6.,thetwotypesofca
6、talyticsystemsusedinindustryare().Correctanswer:A.Phillipscatalyst,B.Ziegler-NattacatalystJudgmentquestion----------------------------------------------------------------------------------------------------4.propertiesofethylene:gasatnormaltemperatureandpressure
7、;criticalpressure5.12MPa;criticaltemperature9.9DEGC.Under450degreesofstability,morehightemperatureexplosiondecomposition,releasealotofheat.Thecorrectanswer:wrong6.2%-4%ammoniaandformaldehydecopolymerinautoclaveinheatingto137-147deg.cforseveralhours,theunstablepa
8、rtdecompositionisthesolutionmethod.Thecorrectanswer:wrongRadioexamination---------------------------------------------------------------------------------------------