检测项目
ThermalPropertiesDetection:
- GlassTransitionTemperature:Tgvalue(°C),transitionwidth(°C)(RefertoASTMD3418)
- MeltingTemperature:Tmvalue(°C),crystallinity(%)
- HeatCapacityChange:ΔCp(J/g·K)
- StorageModulusTransition:E'droppoint(°C),temperaturerange(°C)
- LossFactorPeak:tanδmaxvalue,peakwidth(°C)
- GlassTransitionRegion:moduluscrossovertemperature(°C)
- DecompositionOnsetTemperature:Td(°C)(RefertoISO11358)
- OxidativeInductionTime:OIT(min),temperaturestability(°C)
- WeightLossRate:%/minatspecifictemperature(°C)
- CureReactionKinetics:activationenergy(kJ/mol),reactionrateconstant
- GelPointTemperature:Tgonset(°C),timetogel(min)
- Post-CureTgShift:ΔTg(°C)afteraging
- GlassTransitionvsMolecularWeight:Tg=f(Mw)correlation
- ChainMobilityAnalysis:freevolumefraction(%),relaxationtime(s)
- BranchingImpact:branchingindex,Tgreduction(°C)
- MultipleTgPeaks:peakseparation(°C),domainsize(nm)
- CompositionEffect:Tgblendruledeviation(°C),phasediagramanalysis
- InterfaceInteraction:Tgshiftatinterface(°C)
- PlasticizerConcentration:Tgreductionperwt%(°C/wt%)
- CompatibilityTest:phaseseparationtemperature(°C),solubilityparameter
- MigrationImpact:Tgchangeaftermigration(°C)
- ThermalAgingImpact:Tgshiftafteraging(°C),timedependency
- HydrolyticDegradation:Tgchangeinhumidity(%)
- UVExposureEffect:Tgreductionafterirradiation(kJ/m²)
- FilmTgMeasurement:thicknesseffect(°C/μm),adhesionstrength(MPa)
- CuringDegree:residualenthalpy(J/g),crosslinkdensity
- BarrierProperties:Tgcorrelationwithpermeability(cm³/m²·day·Pa)
- ReinforcementEffect:Tgshiftwithfillerloading(°C/wt%)
- InterphaseCharacterization:Tggradient(°C),interfacialadhesionindex
- ThermalExpansionMismatch:CTEdifference(ppm/K)vsTg
检测范围
1.ThermoplasticPolymers:Includingpolyethylene,polypropylene,andpolystyrene,withfocusonTgimpactonimpactstrengthandservicetemperaturelimits.
2.ThermosettingResins:Coveringepoxy,phenolic,andpolyurethaneresins,emphasizingTgvariationduringcuringcyclesandpost-curestability.
3.ElastomersandRubbers:Encompassingnaturalrubber,siliconerubber,andbutylrubber,prioritizingTgdeterminationforflexibilityretentionandlow-temperatureperformance.
4.EngineeringPlastics:Suchaspolycarbonate,polyamide(nylon),andPEEK,highlightingTginfluenceonmechanicalpropertiesanddimensionalstability.
5.BiomedicalPolymers:Includingpolylacticacid(PLA),polyethyleneglycol(PEG),andhydrogels,withemphasisonTgforbiocompatibilityanddegradationratecontrol.
6.AdhesivesandSealants:Coveringepoxyadhesives,siliconesealants,andpressure-sensitiveadhesives,focusingonTgforbondstrengthandcuremonitoring.
7.PackagingMaterials:SuchasPET,PVC,andbiodegradablefilms,prioritizingTgforbarrierpropertiesandthermalresistanceinstorage.
8.CompositesandLaminates:Encompassingcarbonfiberreinforcedpolymers,glassfibercomposites,andlaminates,withemphasisonTgforinterfacialbondingandthermalcyclingresistance.
9.CoatingsandPaints:Includingautomotivecoatings,powdercoatings,andUV-curablecoatings,focusingonTgforfilmformationhardnessandscratchresistance.
10.FoamsandInsulationMaterials:Suchaspolyurethanefoam,polystyrenefoam,andaerogels,highlightingTgforthermalinsulationefficiencyandcompressivestrength.
检测方法
国际标准：
- ASTMD3418-21JianCeTestMethodforTransitionTemperaturesandEnthalpiesofFusionandCrystallizationofPolymersbyDifferentialScanningCalorimetry
- ISO11357-2:2020Plastics-Differentialscanningcalorimetry(DSC)-Part2:Determinationofglasstransitiontemperature
- ASTMD4065-20JianCePracticeforPlastics:DynamicMechanicalProperties:DeterminationandReportofProcedures
- ISO6721-1:2019Plastics-Determinationofdynamicmechanicalproperties-Part1:Generalprinciples
- GB/T19466.2-2021塑料差示扫描量热法（DSC）第2部分：玻璃化转变温度的测定
- GB/T36800.1-2021塑料动态力学性能的测定第1部分：通则
- GB/T2918-2018塑料状态调节和试验的标准环境
- GB/T36800.2-2021塑料动态力学性能的测定第2部分：扭摆法