东莞市广裕塑胶原料有限公司
美国科慕PTFE 612A 耐化学 防火阻燃PTFE
Chemours Teflon? PTFE 612A Resin for Lubricated Paste Extrusion
Polymer,Thermoplastic,Fluoropolymer,PTFE,Polytetrafluoroethylene (PTFE), Extruded
Chemours
产品说明:
Available in white powder, often called "fine powder," this fluoropolymer resin is capable of being sheared by lubricated paste extrusion (facilitated by a hydrocarbon liquid) into a coherent fibrous matrix with useful structural integrity. Teflon? PTFE fine powders provide a practical method for producing long lengths of product from a resin that cannot be melt extruded. Resin Characteristics: Low to medium reduction ratio Uses: Industrial hose; stress crack-resistant wire coating
Typical properties for Teflon? PTFE Fine Powder:
Chemours was formed from former DuPont performance chemicals businesses, including DuPont Fluoroproducts, in 2015.
Available in white powder, often called "fine powder," this fluoropolymer resin is capable of being sheared by lubricated paste extrusion (facilitated by a hydrocarbon liquid) into a coherent fibrous matrix with useful structural integrity. Teflon? PTFE fine powders provide a practical method for producing long lengths of product from a resin that cannot be melt extruded. Resin Characteristics: Low to medium reduction ratio Uses: Industrial hose; stress crack-resistant wire coating
Typical properties for Teflon? PTFE Fine Powder:
Chemours was formed from former DuPont performance chemicals businesses, including DuPont Fluoroproducts, in 2015.
Chemours Teflon? PTFE 612A Resin for Lubricated Paste Extrusion 物性表
| 物理性能 | 额定值 (公制) | 额定值 (英制) | 测试方法 |
|---|---|---|---|
| 比重 | 2.16 g/cc | 2.16 g/cc | ASTM D618 |
| 吸水率 | = 0.010 % | = 0.010 % | 24 hours; ASTM D570 |
| 粒径 | 490 μm | 490 μm | ASTM D4895 |
| 机械性能 | 额定值 (公制) | 额定值 (英制) | 测试方法 |
|---|---|---|---|
| 洛氏硬度（R 级） | 58 | 58 | ASTM D785 |
| 肖氏硬度 (邵氏 A) | 98 | 98 | ASTM D2240 |
| 肖氏硬度 (邵氏 D) | 50 - 65 | 50 - 65 | ASTM D2240 |
| 极限抗拉强度 | 21.0 - 34.0 MPa | 3050 - 4930 psi | ASTM D1457, 1708, 638 |
| 伸长率 (断裂) | 300 - 500 % | 300 - 500 % | ASTM D 1457, 1708, 638 |
| 弯曲模量 | 0.496 GPa | 71.9 ksi | ASTM D790 |
| 泊松比 | 0.46 | 0.46 | approaches a limit of 0.50 at higher temperature |
| 悬壁梁缺口冲击强度 | 1.89 J/cm | 3.54 ft-lb/in | ASTM D256 |
| 摩擦系数 | 0.050 - 0.10 | 0.050 - 0.10 | ASTM D 1894 |
| 动态摩擦系数 | 0.10 | 0.10 | V = 10 fpm; P= 800 - 1000 psi |
| 0.13 | 0.13 | V = 100 fpm; P= 80 - 100 psi | |
| 静态摩擦系数 | 0.050 - 0.080 | 0.050 - 0.080 | 500 psi |
| K (wear) Factor | 5040 x 10-8mm3/N-M | 2500 x 10-10in3-min/ft-lb-hr | unlubricated vs. soft carbon steel |
| Limiting Pressure Velocity | 0.0420 MPa-m/sec
@Temperature 21.0 - 27.0 °C
|
1200 psi-ft/min
@Temperature 69.8 - 80.6 °F
|
at 10 fpm |
| 0.0631 MPa-m/sec
@Temperature 21.0 - 27.0 °C
|
1800 psi-ft/min
@Temperature 69.8 - 80.6 °F
|
at 100 fpm | |
| 0.0876 MPa-m/sec
@Temperature 21.0 - 27.0 °C
|
2500 psi-ft/min
@Temperature 69.8 - 80.6 °F
|
at 1000 fpm | |
| 泰伯磨损，毫克/1000次 | 8.9 | 8.9 | 1000 cycles; CS-17F wheel |
| 电气性能 | 额定值 (公制) | 额定值 (英制) | 测试方法 |
|---|---|---|---|
| 体积电阻率 | = 1.00e+18 ohm-cm | = 1.00e+18 ohm-cm | ASTM D257 |
| 表面电阻率 | = 1.00e+18 ohm | = 1.00e+18 ohm | ASTM D257 |
| 介电常数 | 2.1
@Frequency 1e+6 Hz
|
2.1
@Frequency 1e+6 Hz
|
ASTM D150 |
| 介电强度 | 18.0 kV/mm | 457 kV/in | 100 micrometers film; ASTM D149 |
| 耗散因数 | = 0.00010
@Frequency 1e+6 Hz
|
= 0.00010
@Frequency 1e+6 Hz
|
ASTM D150 |
| 耐电弧性 | = 300 sec | = 300 sec | ASTM D495 |
| 热性能 | 额定值 (公制) | 额定值 (英制) | 测试方法 |
|---|---|---|---|
| 线性热膨胀系数 | 112 μm/m-°C
@Temperature -100 - 25.0 °C
|
62.2 μin/in-°F
@Temperature -148 - 77.0 °F
|
|
| 124 μm/m-°C
@Temperature 25.0 - 100 °C
|
68.9 μin/in-°F
@Temperature 77.0 - 212 °F
|
||
| 220 μm/m-°C
@Temperature 25.0 - 300 °C
|
122 μin/in-°F
@Temperature 77.0 - 572 °F
|
||
| 790 μm/m-°C
@Temperature 20.0 - 25.0 °C
|
439 μin/in-°F
@Temperature 68.0 - 77.0 °F
|
Large volume change in the 18-25°C transition range | |
| 比热容 | 1.20 J/g-°C
@Temperature 40.0 °C
|
0.287 BTU/lb-°F
@Temperature 104 °F
|
|
| 1.30 J/g-°C
@Temperature 150 °C
|
0.311 BTU/lb-°F
@Temperature 302 °F
|
||
| 1.40 J/g-°C
@Temperature 260 °C
|
0.335 BTU/lb-°F
@Temperature 500 °F
|
||
| 1.50 J/g-°C
@Temperature 20.0 °C
|
0.359 BTU/lb-°F
@Temperature 68.0 °F
|
||
| 导热系数 | 0.300 W/m-K
@Temperature 20.0 - 260 °C
|
2.08 BTU-in/hr-ft2-°F
@Temperature 68.0 - 500 °F
|
|
| 熔融温度 | 327 °C | 621 °F | ASTM D1458 |
| 最高工作温度, Air | 260 °C | 500 °F | retains useful mechanical properties |
| 最低工作温度, Air | -268 °C | -450 °F | retains useful mechanical properties |
| -79.0 °C | -110 °F | remains highly flexible | |
| 可燃性(UL94) | V-0 | V-0 | |
| 极限氧指数 | = 95 % | = 95 % | ASTM D2863 |
PTFE:聚四氟乙烯（Teflon或PTFE），俗称“塑料王”，是由四氟乙烯经聚合而成的高分子化合物，具有优良的化学稳定性、耐腐蚀性、密封性、高润滑不粘性、电绝缘性和良好的抗老化耐力。用作工程塑料，可制成聚四氟乙烯管、棒、带、板、薄膜等。一般应用于性能要求较高的耐腐蚀的管道、容器、泵、阀以及制雷达、高频通讯器材、无线电器材等。
基本特点
耐高温——使用工作温度达250℃。
耐低温——具有良好的机械韧性；即使温度下降到-196℃，也可保持5%的伸长率。
耐腐蚀——对大多数化学药品和溶剂，表现出惰性、能耐强酸强碱、水和各种有机溶剂。
耐气候——有塑料中最佳的老化寿命。
高润滑——是固体材料中摩擦系数最低者。
不粘附——是固体材料中最小的表面张力，不粘附任何物质。聚四氟乙烯相对分子质量较大，低的为数十万，高的达一千万以上
聚四氟乙烯
聚四氟乙烯
，一般为数百万（聚合度在104数量级，而聚乙烯仅在103）。一般结晶度为90～95%，熔融温度为327～342℃。聚四氟乙烯分子中CF2单元按锯齿形状排列，由于氟原子半径较氢稍大，所以相邻的CF2单元不能完全按反式交叉取向，而是形成一个螺旋状的扭曲链，氟原子几乎覆盖了整个高分子链的表面。这种分子结构解释了聚四氟乙烯的各种性能。温度低于19℃时，形成13/6螺旋；在19℃发生相变，分子稍微解开，形成15/7螺旋。
虽然在全氟碳化合物中碳-碳键和碳-氟键的断裂需要分别吸收能量346.94和484.88kJ/mol，但聚四氟乙烯解聚生成1mol四氟乙烯仅需能量171.38kJ。所以在高温裂解时，聚四氟乙烯主要解聚为四氟乙烯。聚四氟乙烯在260、370和420℃时的失重速率（%）每小时分别为1×10-4．4×10-3和9×10-2。可见，聚四氟乙烯可在 260℃长期使用。由于高温裂解时还产生剧毒的副产物氟光气和全氟异丁烯等，所以要特别注意安全防护并防止聚四氟乙烯接触明火。
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