产品详情
“十年老店，完备售后，信誉信赖” 是专业塑胶原料供应商
本司货源稳定充足，发货准时，交期和质量均有保障！
根据客户要求，可提供塑胶原料相关报告。如：ROHS(SGS)报告，UL认证，材质证明及物质安全资料表（MSDS）！
价格合理,诚信经营，可全国供货（广东省内 免费送货上门）。
欢迎来电咨询7*24全天候服务热线：13686017791 易小姐 QQ：335171600
PBT注塑成型的工艺条件是什么
PBT的成型加工性能
1)PBT的吸湿性较小，但在高温下的水分比较敏感，成型加工时会使PBT分子降解，色泽变深，表面产生斑痕，故通常应进行干燥处理。
2)PBT熔料有极好的流动性，因此易于成型薄壁、形状复杂的制品，但要注意模具溢料，以及喷嘴流涎现象。
3)PBT有明显的熔点，当温度升至熔点以上时，流动性会猛然增加，尤要引起注意。
4)PBT成型加工范围较窄，冷却时结晶很快，加之流动性好，特别适于快速注射。
5)PBT了有较大的收缩率及其收缩范围，且在不同方向的收缩率差别较其他塑料更明显。
6)PBT对缺口、尖角的反应很敏感，在这些位置易出现应力集中，使承载能力大为下降，在受力或受冲击时易发生破裂，因此在设计塑件时应注意这一点，所有转角处，特别是内部转角应尽量采用圆弧过渡。
7)纯PBT的伸长率可达200%，因此带有较小凹陷的制品可以从模具上强制脱模。但用玻纤或填料填充后，其伸长率大为下降，在制品中如有凹陷就不能实施强制脱模。
8)PBT模具的流道在可能的情况下以短粗为佳，以圆流道效果最好。一般改性和未改性的PBT均可用普通流道，但玻纤增强PBT应用热流道成型才能有好效果。
9)点浇口和潜伏浇口的剪切作用大，能降低PBT熔料的表观粘度，有利于成型，是经常采用的浇口，浇口直径应以偏大为好。
10)浇口最好正对型芯腔或型芯，这样可以避免喷射，并使熔料在模腔中流动时回补最小。否则，制品容易产生表面缺陷，并使性能劣化。
PBT的主要注塑成型条件
1)料筒温度。料筒温度的选择对PBT的成型十分重要，如温度过低，塑化不良，会造成制品缺料、凹陷，收缩不均和无光泽等现象。而温度过高，会造成喷嘴流涎严重，溢边，色泽变深，甚至降解。通常，料筒温度控制在240~280℃,玻纤增强PBT控制在230~260℃。而喷嘴温度应控制在低于料筒前段温度5~10℃。
2)模具温度。模温与制品的尺寸稳定性、翘曲变形、成型周期和结晶度有直接关系。PBT易于结晶，即使在常温下结晶也很快，故模具温度不需要太高，通常为40~60℃,而玻纤增强PBT的模温稍高，通常为60~80℃。
3)注射压力。PBT熔体粘度低，流动性好，可采用中等程度的注射压力，一般为60~90MPa，玻纤增强PBT为80~100MPa，通常注射压力随塑件厚度的增加而加大，但不要超过100MPa,否则会使脱模困难。
部分型号部分物性表
PP (polypropylene # folding glue | soft /H700-12A/ DuPont Dow)
Use: other
Important beters: melt flow rate: 12 g/10min density: 0.9 g/cm3 notch impact strength: 27 tensile strength: 33.8 MPa thermal debation temperature: 96 centigrade
Manufacturer: Dow DuPont Co
PP (polypropylene # folding glue | soft /H700-12NA/ DuPont Dow)
Use: other
Important beters: melt flow rate: 12 g/10min density: 0.9 g/cm3 notch impact strength: 32 tensile strength: 37.2 MPa thermal debation temperature: 118 centigrade
Manufacturer: Dow DuPont Co
PP (polypropylene # folding glue | soft /H701-20NA/ DuPont Dow)
Use: other
Important beters: melt flow rate: 20 g/10min density: 0.9 g/cm3 notch impact strength: 32 tensile strength: 37.2 MPa thermal debation temperature: 124 centigrade
Manufacturer: Dow DuPont Co
PP (polypropylene # folding glue | soft) /HO35SG/ India Xincheng
Use: other
Important beters: melt flow rate: 3.5 g/10min notched impact strength: 40 tensile strength: 36 MPa, elongation at break: 10% flexural strength: 1700 MPa, hot debation temperature: 104 C.
Manufacturer: Reliance Industries Limited, India
PP (polypropylene # folding glue | soft) /R019MZ/ India Xincheng
Use: other
Important beters: melt flow rate: 1.9 g/10min notched impact strength: 80 tensile strength: 28 MPa elongation at break: 12% bending modulus: 1300 MPa, hot debation temperature: 95 C.
Manufacturer: Reliance Industries Limited, India
PP (polypropylene # folding glue | soft) /HP648H/ PolyMirae of South Korea
Use: other
Important beters: melt flow rate: 2.2 g/10min density: 0.9 g/cm3, notched impact strength: 4 tensile strength: 36 MPa, elongation at break: 8% bending modulus: 1716 MPa, hot debation temperature: 130 degrees.
Manufacturer: Korea PolyMirae company
PP (polypropylene # folding glue | soft) /PPH-T-045/ Jilin Jinjiang
Use: other
Important beters: melt flow rate: 3.5 g/10min tensile strength: 31.5 MPa
Manufacturer: Jinjiang Jihua Group Jilin oil chemical factory
PP (polypropylene # folding glue | soft) /PPH-T-075/ Jilin Jinjiang
Use: other
Important beters: melt flow rate: 3.5 g/10min tensile strength: 30.5 MPa
Manufacturer: Jinjiang Jihua Group Jilin oil chemical factory
PP (polypropylene # folding glue | soft French Total /1251/)
Use: other
Characteristic notes: low crystallinity, narrow molecular weight distribution
Important beters: melt flow rate: 2 g/10min density: 0.88 g/cm3 tensile strength: 15 MPa breaking elongation: 250% flexural modulus: 340 MPa
Manufacturer: Total Petrochemical Industries Co
PP (polypropylene # folding glue | soft) /H007EG/ India Xincheng
Use: other
Important beters: melt flow rate: 0.7 g/10min notched impact strength: 48 tensile strength: 34 MPa elongation at break: 9% bending modulus: 1500 MPa, hot debation temperature: 104 C.
Manufacturer: Reliance Industries Limited, India
PP (polypropylene # folding glue | soft plastic /1116-01/ Schulman)
Use: other
Important beters: melt flow rate: 1.8 g/10min notched impact strength: 1.2 tensile strength: 28.3 MPa elongation at break: 10% flexural modulus: 1070 MPa hardness: 80 hot debation temperature: 85 C.
Manufacturer: Schulman plastics company
PP (polypropylene # folding glue | soft plastic /3701/ Schulman)
Use: other
Important beters: melt flow rate: 20 g/10min density: 0.915 g/cm3, notched impact strength: 8.43 tensile strength: 18 MPa, elongation at break: 25% flexural strength: 20 MPa, bending modulus: 700 MPa, hot debation temperature: 44 degrees.
Manufacturer: Schulman plastics company
PP (polypropylene # folding glue | soft /GB34F/ Han Hua Total)
Use: other
Important beters: melt flow rate: 5 g/10min density: 1.2 g/cm3 tensile strength: 68 MPa flexural modulus: 4605 MPa hardness: 103
Manufacturer: Han Hua Total Ltd.
PP (polypropylene # folding glue | soft /5A10/ DuPont Dow)
Use: other
Important beters: melt flow rate: 1.4 g/10min density: 0.9 g/cm3, notched impact strength: 40 tensile strength: 35 MPa, elongation at break: 8% bending modulus: 1590 MPa, hot debation temperature: 104 degrees.
Manufacturer: Dow DuPont Co
PP (polypropylene # folding glue | soft /BD456MO/ borealis)
Use: other
Important beters:
Manufacturer: Nordic Chemical Co., Ltd.
PP (polypropylene # folding glue | soft /C104-01/ DuPont Dow)
Use: other
Important beters: melt flow rate: 1.2 g/10min density: 0.9 g/cm3, notched impact strength: 187 tensile strength: 26.9 MPa, elongation at break: 9% bending modulus: 1240 MPa, hot debation temperature: 87.8 degrees.
Manufacturer: Dow DuPont Co
PP (polypropylene # folding glue | soft) /554 CS/ 2007.pdf
Use: other
Characteristic notes: flame-retardant medium flow
Important beters: melt flow rate: 140 g/10min density: 0.938 g/cm3, tensile strength: 26.2 MPa, elongation at break: 300% bending modulus: 1100 MPa, hot debation temperature: 87 C.
Manufacturer: United States PolyOne Corporation
PP (polypropylene # folding glue | soft) /853/ 2007.pdf
Use: other
Characteristic note: low flow rate of flame retardancy
Important beters: melt flow rate: 0.91 g/10min density: 1.2 g/cm3, tensile strength: 2.07 MPa, elongation at break: 300% flexural strength: 31.7 MPa bending modulus: 1240 MPa, hot debation temperature: 85 degrees.
Manufacturer: United States PolyOne Corporation
PP (polypropylene # folding glue | soft /T6040/ Asahi Kasei)
Use: other
Characteristic notes: polyolefin composite resin
Important beters: melt flow rate: 8 g/10min
Manufacturer: Japan Asahi Chemical Industry Corporation
PP (polypropylene # folding glue | soft /J630G/ Asahi Kasei)
Use: other
Important beters: melt flow rate: 4 g/10min
Manufacturer: Japan Asahi Chemical Industry Corporation
