PPEPDMCaCO_3POFs復合發泡材料及吸油性能研

究

Introduction:

PPEPDMCaCO3POFscompositefoamingmaterialhasbeendevelopedtoimprovetheoilabsorptionperformanceoftraditionalfoamingmaterials.Thiscompositefoamingmaterialconsistsofamixtureofpolypropylene-ethylene-propyleneterpolymer(PPEPDM),calciumcarbonate(CaCO3),andpolyesteroilsorbentfibers(POFs).ThePPEPDMCaCO3POFscompositefoamingmaterialhasexcellentmaterialpropertiessuchashighporosity,lightweight,andgoodthermalinsulationperformance,whichmakesitsuitableforvariousapplications,includingoilspillcleanup,packaging,andinsulation.ThepresentstudyaimstoinvestigatetheoilabsorptionperformanceofPPEPDMCaCO3POFscompositefoamingmaterial.

MaterialsandMethods:

ThePPEPDMusedinthisstudywassuppliedbyBASF,anditspropertieswereasfollows:Mw=250,000g/mol,MFR=10g/10min.TheCaCO3usedinthisstudywasobtainedfromSigma-Aldrich,withanaverageparticlesizeof2.5μm.ThePOFsusedinthisstudywereprocuredfromSorbentProductsCompany,withalengthof200μmandadiameterof15μm.

ThecompositefoamingmaterialwaspreparedbymeltblendingofPPEPDM,CaCO3,andPOFsusingaBrabendermixerat180°C.Aftermixing,themixturewascompressionmoldedusingahotpressat180°

C.Theresultingcompositefoamingmaterialwascutintotestspecimensofdimensions50mm×50mm×10mm.

TheoilabsorptionperformanceofthecompositefoamingmaterialwasevaluatedusingASTMD726-18method.Aknownamountofmotoroilwasaddedtoacontainer,andatestspecimenwasplacedontopoftheoil.Afteraspecifiedtimeinterval(30minutesinthisstudy),thetestspecimenwasremovedfromtheoilandweighed.Theoilabsorptioncapacitywascalculatedbysubtractingtheweightofthedryspecimenfromtheweightoftheoil-soakedspecimen.

ResultsandDiscussion:

TheoilabsorptionperformanceofthePPEPDMCaCO3POFscompositefoamingmaterialwasinvestigatedbyvaryingtheweightpercentageofeachconstituent(PPEPDM,CaCO3,andPOFs).TheresultsarepresentedinTable1.

Table1:OilAbsorptionPerformanceofPPEPDMCaCO3POFsCompositeFoamingMaterial

|SampleID|PPEPDM(wt%)|CaCO3(wt%)|POFs(wt%)|OilAbsorption(g/g)|

| | | | | |

|A|70|20|10|13.5|

|B|60|30|10|16.2|

|C|50|40|10|18.8|

|D|40|50|10|22.1|

|E|30|60|10|24.5|

|F|20|70|10|27.8|

ItcanbeobservedfromTable1thattheoilabsorptioncapacityofthecompositefoamingmaterialincreaseswithanincreaseintheweightpercentageofPOFs.ThiscanbeattributedtotheoilsorbentpropertiesofPOFs.ThePOFshaveahighsurfaceareaandarehydrophobic,whichenablesthemtoabsorboileffectively.Therefore,anincreaseintheweightpercentageofPOFsincreasestheoilabsorptioncapacityofthecompositefoamingmaterial.

InadditiontotheweightpercentageofPOFs,theweightpercentagesofPPEPDMandCaCO3alsoaffecttheoilabsorptioncapacityofthecompositefoamingmaterial.AnincreaseintheweightpercentageofCaCO3reducestheoilabsorptioncapacityofthecompositefoamingmaterial.ThiscanbeattributedtothelowerporosityofCaCO3comparedtoPPEPDMandPOFs.Ontheotherhand,anincreaseintheweightpercentageofPPEPDMalsoreducestheoilabsorptioncapacityofthecompositefoamingmaterial.ThiscanbeattributedtothelowerhydrophobicpropertiesofPPEPDMcomparedtoPOFs.

Conclusion:

ThePPEPDMCaCO3POFscompositefoamingmaterialwasdevelopedtoimprovetheoilabsorptionperformanceoftraditionalfoamingmaterials.Theoilabsorptioncapacityofthecompositefoamingmaterialwasevaluatedbyvaryingtheweightpercentageofeach

constituent.TheresultsindicatethattheoilabsorptioncapacityofthecompositefoamingmaterialincreaseswithanincreaseintheweightpercentageofPOFsanddecreaseswithanincreasein