3M美国PTFE TF2029Z

美国3M     3M? Dyneon? PTFE Compound TF 2274 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 3105 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 3215 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 3310 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 3311 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 3712 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 4102 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 4103 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 4104 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 4105 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 4215 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 4216 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 4302 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 4303 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 4705 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 6105-N    3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 6220 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 6221 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 6302 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 6404 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 6406 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 6711 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 7149 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 7921 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 8615 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TF 8778 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE Compound TFX 4262     3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 1620   3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 1641   3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 1645   3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 1750   3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 2021Z 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 2025Z 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 2029Z 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 2035Z 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 2071Z 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 2072Z 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 2073Z 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 9201Z 3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 9205   3M Advanced Materials Division   PTFE       3M? Dyneon? PTFE TF 9207Z 3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE 1600    3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE 1610    3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE 1635    3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE 1700    3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE 1705    3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE 2001 Z 3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE 2033 Z 3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE 2070 Z 3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE Compound 4105 3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE Compound 4212 3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE Compound 4213 3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE Compound 4215 3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE Compound 4216 3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE Compound 6105 BR   3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE Compound 6220 3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE Compound 6221 3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE Compound 6302 3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE Compound 8854 3M Advanced Materials Division   PTFE       3M? Dyneon? TFM? Modified PTFE Compound R4213      3M Advanced Materials Division  PTFE       3M? Dyneon? TFM? Modified PTFE TFR 1502 A       3M Advanced Materials Division   PTFE 聚四氟乙烯(PTFE)使用条件行业 化工、石化、炼油、氯碱、制酸、磷肥、制药、、化纤、染化、焦化、煤气、有机合成、有色冶炼、钢铁、原子能及高分子过滤材料、高纯产品生产（如离子膜电解），粘稠物料输送与操作，卫生要求高度严格的食品、饮料等加工生产部门。优点耐高温——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——有塑料中的老化寿命。高润滑——是固体材料中摩擦系数低者。不粘附——是固体材料中小的表面张力，不粘附任何物质。无毒害——具有生理惰性，作为人工血管和脏器长期植入体内无不良反应。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，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[1]。不足1、聚四氟乙烯具有“冷流性”。即材料制品在长时间连续载荷作用下发生的塑性变形(蠕变)，这给它的应用带来一定的限制。如当PTFE用作密封垫时，为密封严密而把螺栓拧得很紧，以致超过特定的压缩应力时，会使垫圈产生“冷流”(蠕变)而被压扁。这些缺点可通过加入适当的填料及改进零件结构等方法来克服。2、PTFE具有突出的不粘性，限制了其工业上的应用。它是极好的防粘材料，这种性能又使它与其他物件的表面粘合极为困难。3、PTFE的线膨胀系数为钢的10~20倍，比多数塑料大，其线膨胀系数随着温度的变化而发生很不规律的变化。在应用PTFE时，如果对这方面性能注意不够，很容易造成损失。2用途编辑用途一：可用于棒、管、板、电缆料、生料带等材料的制作，经二次加工还可制成薄板、薄膜及各种异型制品，还可用作润滑剂、稠化剂。用途二：可作为塑料、橡胶、涂料、油墨、润滑油、润滑脂等的添加剂。用途三：可推压成型制成薄壁管、细棒材、异型棒材、电线电缆绝缘层、滚压成薄带作管道丝扣密封材料。用途四：用于机械、电子、化工等工业，用于喷涂、浸渍等。用途五：用于制浸渍涂料。用途六：可制成棒、板、管材、薄膜及各种异型制品，用于航天、化工、电子、机械、医药等领域。用途七：可制成高绝缘性电器零件、耐高频电线电缆包皮、耐腐蚀化学器皿、耐高寒输油管、人工器官等用途八：用于电池、纤维布等。用途九：可制薄膜、管板棒、轴承、垫圈、阀门及化工管道、管件、设备容器衬里等，用于电器、化工航空、机械等领域。用途十：主要用于电气工业，在航天、航空、电子、仪表、计算机等工业中用作电源和信号线的绝缘层、耐腐、耐磨材料。用途十一：代替石英玻璃器皿应用于原子能、医学、半导体等行业的超纯化学分析和贮存各种酸、碱、有机溶剂。