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.▄PA61013NU2PA66ˉS223-HG6PPHP456HPA66基础创新塑料RV008S-GYMDNATPP中石化海南Z30SPP/K8802PC9425GYPP/1304EPH7914EPDMS537-2PC121RPA11/BESNOP40TLPBT/3315GF/PP/P30B01K(Q)胶NC210TPEE/1501-63DPA6ˉGP2130AEPC德国科思创（拜耳）DP1-1884PPSQC200NPPO旭化成L543VPC4600-10PCD-EP-FRGPPS英全336TPEˉG2745PPˉ7533NˉPC/ABS7800TPETF8AADPA46荷兰DTS250F6PP中石化镇海F5-045PA66/90G55PP3602PA/ABS大赛璐EAG42BT/1550GN30/PP/M2U28EMA/SP2255PP50LR210PA6FPI-15BKTPU/46-10/16PA66135FPMMASR6350PPˉH12Z-00PPˉH1500PC/ABS/AC3100ASA/WG1800Thecommonmethodsofchemicalmodificationare: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▄PA61013NU2PA66ˉRVN17SXSPCEXL1414TPA46STNCL4016PBTCN7030BBPOMJW-01CF2001PPˉQF830EPBT/2401MT/HDPE美国陶氏DMDJ-6200POM德国赫斯特C902122PP19LLG-101EVALD713.93MoldingPA6PX91200TPE1050DBC|8901PA66KN333TPV/3150PP/203-OR25PA6ˉF128POMC9021GV3-30PC三菱工程7025G25TPVˉ8281-55MEDTPUˉ590APC三菱工程GS2020N1DPCDE0021EPPO基础创新塑料GFNA66ˉRAL229PCˉC322COC9506F-04PA61002ES4PBTˉKP515FLBLPOM宝理JW-01PPˉ70PXSPPMX12407CPCDF-1002ASDG-AS10MMA2016PA661100TPVUN-1141APA66RF008UPA6ˉR60ESPP/M1300RPPSOV00APC/DEL32PPPˉJ-3000GPKJ)