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介绍————————
pps是分子主链上含有苯硫基的热塑性工程塑料，属聚醚类塑料。它是于1968年在美国进行工业化生产，工业上主要生产方法有溶液聚合法和自缩聚法。
第一，pps的分子结构可看出，它是以苯环和硫原子交替排列构成的线性或略带支链的高聚物，分子链规整体性强，由刚性苯环与柔性硫醚链连接起来的主键具有刚柔相济的特点，因此pps可以结晶，熔点高；
第二，由于苯环与硫原子形成共轭。且硫原子尚未处于饱和，经氧化后可使硫醚键变成亚砜基，或使相邻大分子形成氧桥支化或交联，使得热、氧稳定性十分突出；
第三，由于硫原子的极性被苯环共轭及高结晶度的束缚，使pps呈现非极性或弱极性的特点，因此pps的电绝缘性、介电性、及耐化学介质性也很突出；
第四，由于pps与众多聚合物和添加剂有良好的相容性，可以采用多种手段进行改性，以提高其力学性能和其它性能。
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 1.94 g/cc | 0.0701 lb/in³ | ASTM D792 |
| Water Absorption |
0.020 % @Time 86400 sec |
0.020 % @Time 24.0 hour |
ISO 62 |
| Linear Mold Shrinkage, Flow |
0.0020 cm/cm @Thickness 3.18 mm |
0.0020 in/in @Thickness 0.125 in |
|
| Linear Mold Shrinkage, Transverse |
0.0040 cm/cm @Thickness 3.20 mm |
0.0040 in/in @Thickness 0.126 in |
ASTM D955 |
| Mechanical Properties | Metric | English | Comments |
| Hardness, Rockwell M | 101 | 101 | ASTM D785 |
| Hardness, Rockwell R | 119 | 119 | ASTM D785 |
| Tensile Strength | 159 MPa | 23100 psi | ASTM D638 |
| Tensile Stress | 165 MPa | 23900 psi | ISO 527-2 |
| Elongation at Break | 1.1 % | 1.1 % | ISO 527-2 |
| 1.1 % | 1.1 % | ASTM D638 | |
| Flexural Strength | 241 MPa | 35000 psi | ASTM D790 |
| 255 MPa | 37000 psi | ISO 178 | |
其他型号参数与生产商——————————
PBT (polybutylene terephthalate polyester # Polyplastics /353RA/)Use: other
Characteristic remark: 30%GF water resistant type
Important beters: density: 1.65 g/cm3 tensile strength: 143 MPa bending strength: 221 MPa bending modulus: 10330 MPa thermal debation temperature: 197
Manufacturer: Japan Plastic Co., Ltd.
PBT (polybutylene terephthalate polyester # Polyplastics /7300E/)
Use: other
Characteristic remark: ESD standard 20%GF
Important beters: density: 1.48 g/cm3 tensile strength: 110 MPa bending strength: 171 MPa bending modulus: 7000 MPa thermal debation temperature: 205
Manufacturer: Japan Plastic Co., Ltd.
PBT (polybutylene terephthalate polyester /SV-1120/LG chemical #)
Use: other
Important beters: density: 1.31 g/cm3 molding shrinkage: 1.65% notched impact strength: 40 tensile strength: 54 MPa elongation at break: 200% bending strength: 83 MPa bending modulus: 2450 MPa thermal debation temperature: 154
Manufacturer: Korea LG chemical company
PBT (polybutylene terephthalate polyester /SG-3250/LG chemical #)
Use: other
Important beters: density: 1.54 g/cm3 molding shrinkage: 0.85% notched impact strength: 30 tensile strength: 55 MPa elongation at break: 4% bending strength: 95 MPa bending modulus: 5100 MPa thermal debation temperature: 200
Manufacturer: Korea LG chemical company
PBT (polybutylene terephthalate # polyester /KU2-7601/ Bayer)
Use: other
Important beters: melt flow rate: 50 g/10min density: 1.35 g/cm3 molding shrinkage: 2.325% oxygen index: 21% bending strength: 10 MPa VEKA softening point: 175 degrees hot debation temperature: 60
Manufacturer: Bayer AG, Germany
PBT (polybutylene terephthalate # polyester /KU2-7615/ Bayer)
Use: other
Important beters: density: 1.35 g/cm3 molding shrinkage: 0.5% tensile strength: 80 MPa elongation at break: 4% bending strength: 130 MPa VEKA softening point: 150 degrees hot debation temperature: 110 C filler content: 15%
Manufacturer: Bayer AG, Germany
PBT (polybutylene terephthalate # polyester /KU2-7209/ Bayer)
Use: other
Important beters: water absorption: 0.4% molding shrinkage: 0.81% tensile strength: 105 MPa elongation at break: 2.5% bending strength: 160 MPa VEKA softening point: 205 C filler content: 15%
Manufacturer: Bayer AG, Germany
PBT (polybutylene terephthalate # polyester /B7425/ Bayer)
Use: other
Important beters: melt flow rate: 10 g/10min density: 1.46 g/cm3 absorption rate: 0.4% molding shrinkage rate: 1.8% oxygen index: 23% tensile strength: 50 MPa elongation: 3.5% bending strength: 90 MPa VEKA softening point of 190 DEG C heat debation temperature: 70 degrees
Manufacturer: Bayer AG, Germany
PBT (polybutylene terephthalate # polyester /KU2-7317/ Bayer)
Use: other
Important beters: density: 1.45 g/cm3 water absorption: 0.4% molding shrinkage: 1.825% tensile strength: 45 MPa elongation at break: 2% bending strength: 80 MPa
Manufacturer: Bayer AG, Germany
PBT (polybutylene terephthalate # polyester /TV4 261/ Holland DSM)
Use: other
Important beters: density: 1.52 g/cm3 water absorption: 0.3% oxygen index: 20% tensile strength: 145 MPa elongation at break: 3% thermal debation temperature: 205
Manufacturer: Holland DSM company
