东莞市广裕塑胶原料有限公司
日本大金PTFE M-18 高粘度 超耐化学腐蚀性
POLYFLON? M-18
聚四氟乙烯
填料
DAIKIN AMERICA, INC.
产品说明：
Daikin PTFE (polytetrafluoroethylene) molding powders are excellent, fine cut resins, well suited for a variety of demanding chemical, mechanical, electrical and non-stick surface applications. These PTFE resins are fully fluorinated and have the best thermal, electrical, and chemical properties of all fluoropolymers with a continuous service rating of 500°F (260°C). Daikin PTFE molding powders are available in homopolymer and modified fine cut grades.
Daikin PTFE molding powders can be used continuously at temperatures up to 260°C (500°F) and for short periods of time at higher temperatures. They also possess excellent low temperature strength.
Daikin PTFE molding powders are completely inert to attack by all chemicals except hightemperature, high-pressure elemental fluorine gas, molten alkaline metals and chlorine trifluoride.
The non-polar molecular structure makes Daikin PTFE molding powders ideal for use as high-frequency insulating material. The dielectric constant and dissipation factor are uniformly low over a wide frequency range.
Under ordinary conditions of use, Daikin PTFE molding powders possess the lowest coefficient of friction of any solid material. Also, the non-stick properties of these products prevent most materials from adhering to them.
Chemical/Mechanical—Packings, gaskets, diaphragms, bellows, corrosion-resistant linings, piping components, pump parts, O-rings, V-rings, bushings, slide bearings, etc.
Electrical/Other—Insulating skived tape, insulating sleeves, terminals, connectors, sockets, spacers, electronic parts, laboratory equipment, etc.
Daikin PTFE molding powders can be used continuously at temperatures up to 260°C (500°F) and for short periods of time at higher temperatures. They also possess excellent low temperature strength.
Daikin PTFE molding powders are completely inert to attack by all chemicals except hightemperature, high-pressure elemental fluorine gas, molten alkaline metals and chlorine trifluoride.
The non-polar molecular structure makes Daikin PTFE molding powders ideal for use as high-frequency insulating material. The dielectric constant and dissipation factor are uniformly low over a wide frequency range.
Under ordinary conditions of use, Daikin PTFE molding powders possess the lowest coefficient of friction of any solid material. Also, the non-stick properties of these products prevent most materials from adhering to them.
Chemical/Mechanical—Packings, gaskets, diaphragms, bellows, corrosion-resistant linings, piping components, pump parts, O-rings, V-rings, bushings, slide bearings, etc.
Electrical/Other—Insulating skived tape, insulating sleeves, terminals, connectors, sockets, spacers, electronic parts, laboratory equipment, etc.
POLYFLON? M-18 物性表
| 基本信息 | |
|---|---|
| 填料/增强材料 |
|
| 特性 |
|
| 用途 |
|
| 机构评级 |
|
| 形式 |
|
| 加工方法 |
|
| 物理性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 比重 | 2.16 | g/cm3 | ASTM D4894 |
| 表观密度 | 0.48 | g/cm3 | ASTM D4894 |
| 收缩率 - 流动 | 3.2 | % | 内部方法 |
| 机械性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 抗张强度(屈服, 1.50 mm) | 43.0 | MPa | ASTM D4894 |
| 伸长率(断裂, 1.50 mm) | 400 | % | ASTM D4894 |
| 压缩强度 | ASTM D695 | ||
| 0% 应变1 | 7.80 | MPa | ASTM D695 |
| 1% 应变2 | 5.00 | MPa | ASTM D695 |
| 25% 应变3 | 28.1 | MPa | ASTM D695 |
| 负载变形 | ASTM D621 | ||
| 25°C, 14 MPa | 17.2 | % | ASTM D621 |
| 100°C, 14 MPa | 33.3 | % | ASTM D621 |
| 200°C, 6.9 MPa | 27.0 | % | ASTM D621 |
| 弹性体 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 压缩永久变形 | ASTM D621 | ||
| 25°C4 | 8.6 | % | ASTM D621 |
| 100°C5 | 20 | % | ASTM D621 |
| 200°C6 | 16 | % | ASTM D621 |
| 热性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 连续使用温度 | 260 | °C | |
| 熔融温度 | 327 | °C | DSC |
| 电气性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 表面电阻率 | 1.0E+15 | ohms | ASTM D257 |
| 体积电阻率 | 1.0E+18 | ohms·cm | ASTM D257 |
| 介电强度 | 100 | kV/mm | |
| 介电常数(1 kHz) | 2.10 | ASTM D150 | |
| 耗散因数(1 kHz) | 1.0E-4 | ASTM D150 |
日本大金PTFE M-18 高粘度 超耐化学腐蚀性
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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