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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。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；其次，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。
聚苯硫醚英文简写为PPS，是一种新型高性能热塑性树脂，具有机械强度高、耐高温、耐化学药品性、难燃、热稳定性好、电性能优良等优点。在电子、汽车、机械及化工领域均有广泛应用。
| 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 # polykemi) /D201 FB52/Use: other
Important beters: density: 1.84 g/cm3 molding shrinkage: 1% notched impact strength: 6 bending strength: 165 MPa bending modulus: 12300 MPa thermal debation temperature: 202
Manufacturer: polykemi company
PBT (polybutylene terephthalate polyester # polykemi) /D201 T20/
Use: other
Important beters: density: 1.45 g/cm3 notched impact strength: 3 bending strength: 92 MPa bending modulus: 4400 MPa VEKA softening point: 187 degrees hot debation temperature: 113
Manufacturer: polykemi company
PBT (polybutylene terephthalate polyester # polykemi) /D241/
Use: other
Characteristic note: improved impact resistance
Important beters: density: 1.25 g/cm3 molding shrinkage: 1.8% notched impact strength: 35 bending strength: 61 MPa bending modulus: 1700 MPa VEKA softening point: 160 degrees hot debation temperature: 55
Manufacturer: polykemi company
PBT (polybutylene terephthalate polyester #) /D4302/ Cool Polymers
Use: other
Important beters: density: 1.47 g/cm3 bending strength: 61 MPa bending modulus: 3330 MPa hardness: 73
Manufacturers: the United States Polymers Cool company
PBT (polybutylene terephthalate # polyester /HM 2316/ Italy PGroup)
Use: other
Important beters: density: 1.26 g/cm3 tensile strength: 14 MPa elongation at break: 200% bending modulus: 150 MPa
Manufacturer: Italy PGroup company
PBT (polybutylene terephthalate # polyester /HM 5113/ Italy PGroup)
Use: other
Important beters: density: 1.26 g/cm3 tensile strength: 14 MPa elongation at break: 400% bending modulus: 100 MPa
Manufacturer: Italy PGroup company
PBT (polybutylene terephthalate # polyester /HM 5115/ Italy PGroup)
Use: other
Important beters: density: 1.27 g/cm3 tensile strength: 27 MPa elongation at break: 400% bending modulus: 200 MPa
Manufacturer: Italy PGroup company
PBT (polybutylene terephthalate polyester #) /R400/ Germany Almaak
Use: other
Features notes: recyclable materials
Important beters: density: 1.31 g/cm3 water absorption: 0.15% notched impact strength: 2 VEKA softening point: 150 degrees hot debation temperature: 40
Manufacturer: Almaak, Germany
PBT (polybutylene terephthalate polyester #) /SK645FR BK851/ DuPont dow
Use: other
Characteristic remark: flame retardant
Important beters: density: 1.69 g/cm3
Manufacturer: Dow DuPont Co
PBT (polybutylene terephthalate polyester #) /S650FR NC010/ DuPont dow
Use: other
Important beters: density: 1.58 g/cm3 thermal debation temperature: 60
Manufacturer: Dow DuPont Co
