ABSsurfacepretreatmentisnecessarytopretreattheplasticsurfacebeforepainting,inordertoimprovetheadhesionofthecoatingonthesurfaceoftheplasticandimprovetheappearanceoftheplastic.(1)whenannealedplasticABSisformed,itiseasytoforminternalstressandeasytocrackatthestressconcentrationaftercoating.Annealingorsurfacetreatmentcanbeusedtoeliminatestress.AnnealingtreatmentistoheattheABSplasticmoldingpartsbelowthethermaldeformationtemperature,thatis,60degreescentigrade,andheatpreservation2H.Inordertoreduceinvestmentinequipment,thewholesurfacetreatmentcanbeusedtoimprovethesurfacecondition.TheformulationandprocessofthewholesurfacetreatmentarelistedinTable1.Table1wholesurfacetreatmentformulaandprocessparameters/1water/3temperature/temperature/Croomtemperaturetreatmenttime/mi15-20(2)oilremovalABSplasticpartsareoftencontaminatedwithoil,handsweatanddemouldingagent,whichwillmaketheadhesionofthecoatingworse,thecoatingproducescracking,foamingandshedding.Oilremovalshouldbecarriedoutbeforecoating.ABSplasticpartsareusuallycleanedwithgasolineoralcoholandthenchemicaldegreasing.TheprocessformulaislistedinTable2.Table2theresidualalkalinesolutiononthesurfaceoftheworkpieceshouldbethoroughlycleanedaftertheprocessparametersofsodiumhydroxide(S/L)sodium50~70phosphate(S/L)20~30sodiumcarbonate(S/L)10~20surfaceactiveagent(S/L)5~10temperature/50~60treatmenttime/min10to15chemicaloil,andcleanedwithpurewater***,dryingordrying.(3)electricalanddustremovalplasticproductsareinsulators,andthesurfaceresistanceisgenerallyaround1013ohms,whichiseasytogeneratestaticelectricity.Aftercharged,itiseasytoadsorbtinydustintheairandsticktothesurface.Itisverydifficulttoremovedustfromelectrostaticadsorptionbygeneralblowingmethod.Highpressureionizedairflowhasgoodeffectinadditiontoelectrostaticprecipitator.#POMSC652气密性PC/ABS/WP-1200/PA66ˉRF007HPOM/5520/TPU/DP9665DUTPUALRPC60DPBTˉVGF4715TPEEMT9655PMMA旭化成SR8200PP泰国石化1126NKPP9760FINACENEPA6PF007SPC基础创新塑料201R-111PA66ET2025PA66ˉRA845PA61010N2-2PP韩华道达尔BJ100PPˉ50MH247TPUˉ1278DUPBTWE007PVDF美国苏威6010NCPA66/R413H/NTFEP大金NP101PC191PP/P20B0PG-151PC/EXL9330PA6德国巴斯夫B3UG4GY22985TPETE-5108PPˉ7642PC帝人L-1225LLPA6/F132PC/DFL349EFPCˉS2000UTPVˉ4190PMMADR-66080PP新加坡埃克森美孚703A66/R540H02PC1278RPC/ABSFR90NEVAV218PA6ˉK-FKGS6/BPA/MXD61524PA6N0320FNThecommonmethodsofchemicalmodificationare:oneisoneelementofthemodifiedresinmonomer,themodifiedmonomerisanother,graftcopolymerizationinthereactionkettleandanewcopolymer.Thesecondmethodistomodifythemodifiedresinasthemainrawmaterialbyincreasingthepolarelementintheresinmolecule.聚丙烯广泛用于塑料管材的生产，但PP是一种抗老化性能差的材料，为了PP的性能，通过化学改性发明了PP-B和PP-R树脂。Polypropyleneiswidelyusedintheproductionofplasticpipes,butPPisakindofpooranti-agingmaterial.InordertoimprovetheperformanceofPP,PP-BandPP-Rresinhebeeninventedbychemicalmodification.PP-B树脂是丙烯和的嵌段共聚物。合成丙烯-嵌段共聚物要用两个聚合反应釜PP-Bresinisablockcopolymerofpropyleneandethylene.TwopolymerizationreactorsforthesynthesisofpropyleneethyleneblockcopolymersPA66对许多溶剂具有抗溶性，但对酸和其它一些氯化剂的抵抗力较弱。PA66isresistanttomanysolvents,butislessresistanttoacidsandotherchlorinatedagents.工艺条件processconditi***干燥处理：如果加工前材料是密封的，那么就没有必要干燥。然而，如果储存容器被打开，那么建议在85℃的热空气中干燥处理。如果湿度大于0.2%，还需要进行105℃，12小时的真空干燥。熔化温度：260~290℃。对玻璃添加剂的产品为275~280℃。熔化温度应避免高于300℃。模具温度：建议80℃。模具温度将影响结晶度，而结晶度将影响产品的物理特性。对于薄壁塑件，如果使用低于40℃的模具温度，则塑件的结晶度将随着时间而变化，为了保持塑件的几何性，需要进行退火处理。***压力：通常在750~1250bar，取决于材料和产品设计。Drying:ifthematerialissealedbeforeprocessing,thereisnoneedtodry.However,ifthestoragecontainerisopened,itisrecommendedtodryat85Chotair.Ifthehumidityisgreaterthan0.2%,thevacuumdryingat105Cand12hoursisrequired.Meltingtemperature:260~290C.Theproductofglassadditiveis275~280C.Themeltingtemperatureshouldbeoidedabove300degreesC.Moldtemperature:recommended80degreesC.Themoldtemperaturewillaffectthecrystallinity,andthecrystallinitywillaffectthephysicalcharacteristicsoftheproduct.Forthin-walledplasticparts,ifthemoldtemperaturebelow40degreesisused,thecrystallinityoftheplasticpartswillchangewithtime.Inordertomaintainthegeometricstabilityoftheplasticparts,theannealingprocessisneeded.Injectionpressure:usuallyin750~1250bar,dependingonmaterialandproductdesign.***速度：高速（对于增强型材料应稍低一些）。高性能PC‖/ABSA2200合金材料具有高抗冲击、优良的耐候性和亚光效果，可应用于车载音响和DVD、汽车仪表板等部件。电镀级PC‖/ABSA2200MP具有杰出的电镀效果和良好的耐低温性能，可应用于汽车把手等电镀部件。Injectionspeed:highspeed(forenhancedmaterialshouldbeslightlylower).HighperformancePC/ABSA2200alloymaterialhashighimpactresistance,excellentweatherabilityandsublighteffect.Itcanbeusedinvehicleaudio,DVDsystem,vehicledashboardandothercomponents.ElectroplatedgradePC/ABSA2200MPhasexcellentelectroplatingeffectandgoodlowtemperatureresistance.Itcanbeappliedtoelectroplatingpartssuchascarhandles.注意事项：/PC‖塑料成型问题Note:/PCplasticsmoldingprocessproblem??产生原因及解决办法CausesandSoluti***??1、银丝1,silversilk??a、原材料受潮————干燥原料A,rawmaterialsaredampened-dryrawmaterials??b、树脂过热分解————减低成型温度B,superheateddecompositionofresin--reducingmoldingtemperature??c、螺杆压缩比小，背压不足————背压C,screwcompressionratiois***all,backpressureisinsufficient--increasebackpressure.??d、模温过低————加热模具D,lowmoldtemperature--heating??e、排气不良————模具分型面开排气槽Eandpoorexhaust--theexhaustmanifoldofthemoldpartingsurface#POMSC652气密性PPˉT2502PA66A30H3.0PA6/CM1017XLA6HPN9233GPPO/PX000Pˉ522LPA12/1174PCEXL9112-111PP37T1020POMF30PCGSH2050DFPA12L20ECPA66杜邦70G13LNC010PPOˉGTX909PPˉ52MHR647TPEJSRRB830TPU美国陶氏101GF40PA6/P3000UMVLDPE(茂金属)美国埃克森美孚20-18KBPPR600FPMMA2042PBTPX6103FPP-669PPˉ3717PVDF法国苏威TA-50515/0000PA66/A3WPPˉAH561PP5014LHPT-1PPˉMX95318EVA/7920MTPEE/M555CRPP6652EVA/150PCˉDF0089EVA/1010VNPM800EPBTˉ4022S中石化巴陵YH-792PCLQ3187PCLCT1200PPC342M6PBT宝理3226ED3002PMM***G902LXKJ)