品牌: | 沙伯基礎(chǔ) |
型號(hào): | VX5022 |
產(chǎn)地: | 美國 |
單價(jià): | 25.00元/kg |
發(fā)貨期限: | 自買家付款之日起 天內(nèi)發(fā)貨 |
所在地: | 直轄市 上海 |
有效期至: | 長期有效 |
發(fā)布時(shí)間: | 2023-12-19 06:56 |
最后更新: | 2023-12-19 06:56 |
瀏覽次數(shù): | 88 |
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SABICValox系列PBT簡介
聚對(duì)苯二甲酸丁二醇酯,英文名polybutyleneterephthalate(簡稱PBT),屬于聚酯系列,是由1.4-pbt丁二醇(1.4-Butyleneglycol)與對(duì)苯二甲酸(PTA)或者對(duì)苯二甲酸酯(DMT)聚縮合而成,并經(jīng)由混煉程序制成的乳白色半透明到不透明、結(jié)晶型熱塑性聚酯樹脂。與PET一起統(tǒng)稱為熱塑性聚酯,或飽和聚酯。
PBT特性
1、機(jī)械性能:強(qiáng)度高、耐疲勞性、尺寸穩(wěn)定、蠕變也?。ǜ邷貤l件下也極少有變化);
2、耐熱老化性:增強(qiáng)后的UL溫度指數(shù)達(dá)120~140℃(戶外長期老化性也很好);
3、耐溶劑性:無應(yīng)力開裂;
4、對(duì)水穩(wěn)定性:PBT遇水易分解(高溫、高濕環(huán)境下使用需謹(jǐn)慎);
5、絕緣性能:優(yōu)良(潮濕、高溫也能保持電性能穩(wěn)定,是制造電子、電氣零件的理想材料);
6、介電系數(shù):3.0-3.2;
7、耐電弧性:120s
8、成型加工性:普通設(shè)備注塑或擠塑。由于結(jié)晶速度快,流動(dòng)性好,模具溫度也比其他工程塑料要求低。在加工薄壁制件時(shí),僅需幾秒鐘,對(duì)大部件也只要40-60s即可。
PBT的應(yīng)用
1、電子電器:連接器、開關(guān)零件、家用電器、配件零件、小型電動(dòng)罩蓋或(耐熱性、阻燃性、電氣絕緣性、成型加工性);
2、汽車:外裝零件:主要有轉(zhuǎn)角格珊、發(fā)動(dòng)機(jī)放熱孔罩等;內(nèi)部零部件:主要有內(nèi)鏡撐條、刮水器支架和控制系統(tǒng)閥;
3、汽車電器零件:汽車點(diǎn)火線圈絞管和各種電器連接器等。
4、機(jī)械設(shè)備:視頻磁帶錄音機(jī)的帶式傳動(dòng)軸、電子計(jì)算機(jī)罩、水銀燈罩、電熨斗罩、烘烤機(jī)零件以及大量的齒輪、凸輪、按鈕、電子表外殼、照相機(jī)的零件(有耐熱、阻燃要求)
PBT注塑工藝
干燥處理:這種材料在高溫下很容易水解,因此加工前的干燥處理是很重要的。建議在空氣中的干燥條件為120℃,6~8小時(shí),或者150℃,2~4小時(shí)。濕度必須小于0.03%。如果用吸濕干燥器干燥,建議條件為150℃,2.5小時(shí)。[2]
熔化溫度:225~275℃,建議溫度:250℃。
模具溫度:對(duì)于未增強(qiáng)型的材料為40~60℃。要很好地設(shè)計(jì)模具的冷卻腔道以減小塑件的彎曲。熱量的散失一定要快而均勻。建議模具冷卻腔道的直徑為12mm。
注射壓力:中等(大到1500bar)。
注射速度:應(yīng)使用盡可能快的注射速度(因?yàn)镻BT的凝固很快)。
流道和澆口:建議使用圓形流道以增加壓力的傳遞(經(jīng)驗(yàn)公式:流道直徑=塑件厚度+1.5mm)??梢允褂酶鞣N型式的澆口。也可以使用熱流道,但要注意防止材料的滲漏和降解。澆口直徑應(yīng)該在0.8~1.0*t之間,這里t是塑件厚度。如果是潛入式澆口,建議小直徑為0.75mm。
SABICValox系列PBT介紹
Valox175Unreinforced,neatPBTresinforcompoundingonly.NaturalColorOnly.
Valox175HPUnreinforced,neatFDAcompliantPBTresinforcompoundingonly.
Valox176Unreinforced,neatPBTresinforfibers.NaturalColorOnly.
Valox176HPUnreinforced,FDAcompliantneatPBTresinforfibers.NaturalColorOnly.
Valox195Forcompoundingonly(notforinjectionmolding)UnreinforcedPBT.
Valox195HPForcompoundingonly(notforinjectionmolding)UnreinforcedPBT.
Valox215HPRUnreinforcedPBTwithmoldrelease.FDAfoodcontactcompliantinlimitedcolors.
Valox295UnreinforcedPBT;Meltviscosity900-1300poise.
Valox305PBT,Forcompoundingonly.NotintendedforInjectionMolding.
Valox308PBT,Forcompoundingonly.NotintendedforInjectionMolding.
Valox310Unreinforced,generalpurpose.Typicalviscosity.
Valox310SE0Unreinforced,flameretardantPBT.V0-0.7mm.
Valox311Unreinforced,improvedresistancetoUV.Mediumviscosity.
Valox312Unreinforced,Forcompoundingonly(notforinjectionmolding).
Valox315Unreinforced,Forextrusion/compoundingonly(notforinjectionmolding).
Valox325Generalpurpose,unreinforced,improvedprocessing.
Valox337LowtemperatureimpactPBT.
Valox357PC/PBT,ImpactModifier,FlameRetardant
Valox357UUnreinforcedPBTP,UL94V-0/5VArated.ImprovedUVresistantversionofVALOX357.
Valox364Designedforoutdoortelecommunicationsenclosureapplications.
Valox365Unreinforced,opaque,provideschemicalresistanceanddimensionalstability.
Valox3706ImpactmodifiedPBT+PC.Outdoorenclosures.Notavailableinallcolors.
Valox4012G10%glassfiberreinforcedPBTwithexcellentmechanicalproperties.
Valox42030%GR,excellentstrength,stiffnessanddimensionalstability.Highheatresistance.
Valox420HP30%GlassfilledPBTresin,FDAFoodContactcompliantinlimitedcolors.
Valox420SE030%GR,UL94V-0/5Vrated.Numerousapplications.
Valox420SE0UPBT,30%GlassReinforced,FlameRetardantUL94V-0/5VArated,UV-Stabilized
Valox43033%glassreinforced,impactmodified.
Valox451E20%GR.EasyflowversionofVALOX451.
Valox4521PBT,GlassFiber,FlameRetardant,ULGrade
Valox4576.5%GRPBT,UL94V-0/5V.
Valox50830%GRPBT+PC.Excellentmechanicalandthermalperformance.
Valox508R30%GRPBT+PC.Excellentmechanicalandthermalperformance.
Valox55330%GRPBT+PC,UL94V-0.Reducedwarpagecharacteristics.Applications.
Valox553U30%GRPBT+PC,UL94V-0.Reducedwarpagecharacteristics.Applications.
Valox81515%GRPBT+PET,excellentsurfacefinish.
Valox815FPBT+PET,15%Glass,MoldRelease,HeatStabilized,ForFoodcontactapplications
Valox83030%GRPBTP,excellentsurfacefinish.
Valox830FPBT+PET,30%Glass,MoldRelease,HeatStabilized,Forfoodcontactapplications
Valox85515%GRPBTP,UL94V-0rated.Improvedsurfaceappearance.
Valox86530%GRPBTP,UL94V-0rated.Non-bloomingflameretardant.
ValoxCS81515%glassreinforcedPBT+PET.Improvedheatagedcolorstability,highsurfacegloss.
ValoxDR4817%glassreinforced,flameretardantgradeUL-94ratedV-0/5VA.
ValoxDR5115%GRpolyester,excellentmechanical,thermalandelectricalperformance.
我公司長期經(jīng)營SABICValox系列PBT,可提供、ROHS、UL黃卡、MSDS、FDA、COC、PDF物性表等各項(xiàng)數(shù)據(jù),多年誠信為本,貨源穩(wěn)定、現(xiàn)貨庫存、原廠原包、假一賠十、歡迎來電洽談!