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1、Introduction of GE design guideTest methodsH.P.Lin May/28/2001Acer ConfidentialContentMechanical testingThermal testFlammability testingElectrical testingPhysical testingRheological testingAcer ConfidentialMechanical testingTensile strength, strain, and modulus Multi-Purpose Test Specimen(MPTS)Acer
2、ConfidentialStress - Strain DiagramAcer ConfidentialTensile strength, strain, and modulus Speeds of testingSpeed A 1mm/min tensile modulusSpeed B 5mm/min tensile stress/strain for glass filled resinsSpeed C 50mm/min tensile stress/strain for unfilled resinsAcer ConfidentialFlexural strength and modu
3、lusAcer ConfidentialFlexural stress and modulus Flexural stress S = 3 F l / (2b h2) Flexural modulus E = s l 3 / (4 b h3) F maximum load (N) exerted on the sample.l the distance (mm) between the supports.b the width (mm) of the sample h the height (mm) of the sample s slope of the initial straight l
4、ine portion of the load deflection curve, N/mm of deflection.Acer ConfidentialTable Abrasion resistance measure the loss mass in mg/1000 cyclesAcer ConfidentialHardness testingHardness scalesAcer ConfidentialBall hardness reported in N / mm2Acer ConfidentialRockwell hardnessAcer ConfidentialRockwell
5、 hardnessAcer ConfidentialShore hardnessAcer ConfidentialShore hardnessAcer ConfidentialShore hardness Shore A form 10 to 90 soft materials Shore D form 20 to 90 hard materialsAcer ConfidentialImpact testingSimulate materials absorb energy in high speedVery sensitive to specimen thickness and molecu
6、lar orientationAcer ConfidentialIzod Impact StrengthAcer ConfidentialCharpy Impact StrengthAcer ConfidentialThermal testingVicat Softening Temperature(VST)Acer ConfidentialVicat Soften Temperature method A load 10N method B load 50N temperature rise 50。C/h 120。C/hAcer ConfidentialHeat Deflection Tem
7、perature(HDT)Acer ConfidentialHeat Deflection Temperature(HDT) HDT/A load 1.80Mpa HDT/B load 0.45Mpa Temperature rise 2。C/minAcer ConfidentialHeat Deflection Temperature(HDT) Amorphous material HDT Tg(glass transition temperature) Crystalline material low HDT value fiber HDT Acer ConfidentialBall pr
8、essure Load 20N 1hr75。C for non current-carrying parts125。C for live partsAcer ConfidentialThermal conductivity unit W/m。CAcer ConfidentialRelative Temperature Index,RTI Max service temperature for long time End of service 50% of original value Electrical dielectric strength Mechanical with Impact t
9、ensile impact strength Mechanical without Impact tensile strength Acer ConfidentialCoefficient of Liner Thermal Expansion Specimen 120mm*10mm*10mm =l/L(t2-t1) glass fiber filled materialAcer ConfidentialFlammability testingUL94 HBAcer ConfidentialUL94 V0 10 sec V1 30 sec & no drip V2 30 sec Acer Con
10、fidentialUL94 5V 5VA 5VBAcer ConfidentialLimited Oxygen IndexAcer ConfidentialGlow wire 1.No flame 2.extinguish 108 *cmAcer ConfidentialRelative permittivity(Dielectric constant)Acer ConfidentialDissipation factor Dissipation factor = tan d d=V和和A的相位差的相位差 /2 Low factor material high frequency applic
11、ations High factor material high welding capabilityAcer ConfidentialArc resistanceAcer ConfidentialComparative Tracking Index(CTI)Acer ConfidentialComparative Tracking Index(CTI) 175V to 600V CTI 375(300) M - 0.8 染料染料, 防火劑防火劑, glass fiber TiO2 Acer ConfidentialOptical testingHaze and Light transmiss
12、ionAcer ConfidentialGlossAcer ConfidentialRefractive index sin/ sinAcer ConfidentialPhysical testingDensityWater absorption 烘料烘料 50。C 24hr testing 23。C 24hr 100。C 30min until saturationAcer ConfidentialMould shrinkage 圓形版圓形版or長方形版長方形版 流動方向與垂直流動方向流動方向與垂直流動方向 glass fiber filled materialAcer ConfidentialRheological testingMelt Flow Rate/ Melt Flow index g/10 min MFR(220/10)Acer ConfidentialMelt Volume Rate/Melt Volume index cm3/10 min MVI(250/5)
