UF urea-formaldehyde resin to UP unsaturated polyester.pdf

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1、UFurea-formaldehyderesinPARAMETERUNITVALUEREFERENCESGENERALCommonnameureaformaldehyderesinCASnameurea,polymerwithformaldehydeAcronymUFCASnumber9011056;68611643;68071454HISTORYPersontodiscoverEllis,CEllis,C,USPatent1,846,853,Feb.23,1932.Date1932(filled1924)Detailsreactionbetweenure

2、aandformaldehydeinthepresenceofalkalinecatalystSYNTHESISMonomer(s)structureOOCCH2NNH2HHMonomer(s)CASnumber(s)57136;50000Monomer(s)molecularweight(s)dalton,g/60.06;30.03mol,amuMonomerratio11.6(F/U)Park,BD;Jeong,HW;Int.J.AdhesionAdhesives,inpress,2011.Methodofsynthesisreactionofure

3、awithformaldehydedissolvedinwater(4550%solution)tohydroxymethylatedureausedforsubsequentpolycondensationTemperatureofcuringoC90120Minopoulou,E;Dessipri,E;Chryssikos,GD;Gionis,V;Paipetis,A;Panayiotou,C,Int.J.AdhesionAdhesives,23,47384,2003.Gelationtimes51201Park,BD;Jeong,HW;Int.J.

4、AdhesionAdhesives,inpress,2011.Numberaveragemoleculardalton,g/400640(waterbaseddispersion)Ferra,JMM;Mendes,AM;Costa,weight,Mmol,amuMRN;Carvalho,LH,J.Appl.nPolym.Sci.,118,195668,2010.Massaveragemolecularweight,dalton,g/2,500500,000(waterbaseddispersion)GavrilovicGrmusa,I;Neskovic,

5、O;Mmol,amuDiporovicMomcilovic,M;Popovic,wM,J.Serb.Chem.Soc.,75,5,689701,2010.Polydispersity,M/M5.27.3(waterbaseddispersion)wnCOMMERCIALPOLYMERSSomemanufacturersChemiplasticaTradenamesUrochemPHYSICALPROPERTIESDensityat20oCgcm-31.21.31Refractiveindex,20oC1.43Meltingtemperature,DSCo

6、C119HeatdeflectiontemperatureatoC1301.8MPaHANDBOOKOFPOLYMERS/Copyrights2012;ChemTecPublishing669UFurea-formaldehyderesinPARAMETERUNITVALUEREFERENCESHansensolubilityparameters,d,MPa0.520.81,8.29,12.71Dd,dPHHildebrandsolubilityparameterMPa0.525.74Dielectricconstantat100Hz/15MHzDissi

7、pationfactorat1000HzE41000Volumeresistivityohmm1.1E9Surfaceresistivityohm1.1E11MECHANICAL&RHEOLOGICALPROPERTIESTensilestrengthMPa55TensilestressatyieldMPa4555FlexuralstrengthMPa80170Charpyimpactstrength,kJm-2512unnotched,23oCCharpyimpactstrength,notched,kJm-21.11.623oCTenacity(fib

8、er)cNtex-114RogersGentile,V;East,GC,McIn