Tecodur? PBT 塑胶原料 PB70 GR40 NL100 Eurotec Engineering Plastics
Tecodur? PBT 塑胶原料 PB70 GR40 NL100 Eurotec Engineering Plastics
本公司承诺所售原料均为原厂原包假一赔十
东莞永大塑胶原料有限公司
主营产品:
塑胶原料 工程塑胶 聚酰胺 PA66耐磨损 PA66超韧耐寒级 PA66食品级 PA66加玻纤 PA66增韧级 PA66阻燃防火 POM聚甲醛 高粘度POM 坚韧级POM 耐磨损POM 高韧性POM 抗紫外线POM 加玻纤POM 低翘曲POM
工程塑胶:EVA、PC、POM、PA6、PA66、PEEK、COC、PBT、PET PC/ABS、PPS、PPO、LCP;PC
热弹性体:K胶、TPE、TPR、PVC、TPU、TPV、TPX、SBS;
通用塑胶:ABS、PMMA、PP、PE、AS、HDPE、LDPE。
特种料: PEI、PTFE、PVDF
本公司所销售之塑胶原料均可提供原厂的物性表,UL MSDS SGS COC 欢迎来电咨询!
备注:公司长期销售塑胶原料/原厂原包,25千克/包,符合ROHS认证标准,25千克起。质量有保证
Tecodur? PBT 塑胶原料 PB30 NL Eurotec Engineering Plastics
Tecodur? PBT 塑胶原料 PB50 NL Eurotec Engineering Plastics
Tecodur? PBT 塑胶原料 PB70 BK001 HS Eurotec Engineering Plastics
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Tecodur? PBT 塑胶原料 PB70 GR10 NL100 Eurotec Engineering Plastics
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Tecodur? PBT+PET 塑胶原料 PB70 GR15 BK002 XA21 Eurotec Engineering Plastics
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Tecodur? PBT+PET 塑胶原料 PB70 GR20 BK002 TD21 Eurotec Engineering Plastics
Tecodur? PBT 塑胶原料 PB70 GR20 NL100 HS Eurotec Engineering Plastics
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Tecodur? PBT+ASA 塑胶原料 PB70 GR30 NL MB04 Eurotec Engineering Plastics
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Tecodur? PBT+PET 塑胶原料 PB70 GR30 NL100 HT01 Eurotec Engineering Plastics
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Tecodur? PBT 塑胶原料 PB70 GR40 NL100 Eurotec Engineering Plastics
Tecodur? PBT+PET 塑胶原料 PB70 GR45 NL100 HS01 Eurotec Engineering Plastics
Tecodur? PBT+PET 塑胶原料 PB70 GR50 BK002 CA01 Eurotec Engineering Plastics
Tecodur? PBT+PET 塑胶原料 PB70 GR50 BK009 MX01 Eurotec Engineering Plastics
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Tecodur? PBT 塑胶原料 PB70 NL IL Eurotec Engineering Plastics
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Tecodur? PC+PBT 塑胶原料 PB70 NL TD22 Eurotec Engineering Plastics
Tecodur? PBT 塑胶原料 PB70 NL XA20 Eurotec Engineering Plastics
Tecodur? PBT 塑胶原料 PB70 NL Eurotec Engineering Plastics
PBT注塑工艺:
PBT的聚合工艺成熟、成本较低,成型加工容易。未改性PBT性能不佳,实际应用要对PBT进行改性,其中,玻璃纤维增强改性牌号占PBT的70%以上。
1、PBT的工艺特性
PBT具有明显的熔点,熔点为225~235℃,是结晶型材料,结晶度可达40%。PBT熔体的粘度受温度的影响不如剪切应力那么大,因此,在注塑中,注射压力对PBT熔体流动性影响是明显。PBT在熔融状态下流动性好,粘度低,仅次于尼龙,在成型易发生“流延”现象。PBT成型制品各向异性。PBT在高温下遇水易降解。
2、原料准备
注塑前要进行干燥、要将水分含量控制在0.02%以下。采用热风循环干燥时,当温度为105℃、120℃或140℃时,所对应的时间不超过6h、4h、2h。料层厚度低于30mm。
3、注塑工艺参数
①注射温度 PBT的分解温度为280℃,所以实际生产中一般控制在240-260℃之间。②注射压力注射压力一般为50~100MPa。③注射速率 PBT冷却速度快,因此要采用较快的注射速率。④螺杆转速和背压 成型PBT的螺杆转速不宜超过80r/min,一般在25~60r/min之间。背压一般为注射压力的10%~15%。⑤模具温度 一般控制在70~80℃,各部位的温度差不超过10℃。⑥成型周期 一般情况下为15~60 s。