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| 牌号简介 About |
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| 杜邦聚四氟乙烯640xt x是一种聚四氟乙烯细粉末树脂，主要用于膏体挤出。特氟隆聚四氟乙烯640xt x提供了特氟隆氟聚合物树脂典型特性的优良组合：无老化特性；几乎所有工业化学品和溶剂的化学惰性；特殊的介电特性，频率和温度稳定；韧性和柔韧性；低摩擦系数；不粘c特性；可忽略的吸湿性；优异的耐候性；工作温度高达260°C（500°F）；在-240°C（-400°F）下具有有用的性能；特氟隆聚四氟乙烯640xt x设计用于在宽挤压还原比范围（250:1至5000:1）内加工，即使在该范围的顶部也具有优异的性能。由于其优异的转变特性，特氟隆聚四氟乙烯640xt x可以在较宽的减速比范围内以极低的润滑油水平挤压，而挤压压力保持较低。例如，Teflon PTFE 640xt x可以挤压成线，在1000:1到4500:1的减速比范围内具有优异的性能，单润滑剂含量为16%（基于总重量）。这意味着单一的聚四氟乙烯/润滑剂混合物可用于在同一尺寸挤出机生产线上制造的许多结构。此外，优良的高还原比性能意味着，用其他具有较低还原比的小口径机生产的产品，现在可以用较大的粉末进行挤压，这代表了相当大的经济优势，因为每次挤压可以挤压更多的材料。这也意味着在一次挤压中可以获得更长的线或管。聚四氟乙烯640xt x符合ASTM D 4895-10，I型，1级，C级的要求。典型应用聚四氟乙烯640xt x主要用于高性能电线和电缆以及管道的绝缘。它也适用于其他典型应用，如添加剂，其中需要聚四氟乙烯的一些性能。 DuPont ™ Teflon ® PTFE 640XT X is a polytetrafluoroethylene fine powder resin used primarily for paste extrusion. Teflon ® PTFE 640XT X offers the excellent combination of properties typical of the Teflon ® fluoropolymer resins: non-aging characteristics; chemical inertness to nearly all industrial chemicals and solvents; exceptional dielectric properties, stable with frequency and temperature; toughness and flexibility; low coefficient of friction; non-stick characteristics; negligible moisture absorption; excellent weather resistance; service temperature up to 260°C (500°F); useful properties at -240 °C (-400 °F); Teflon ® PTFE 640XT X is designed for processing over a wide extrusion reduction ratio range (250:1 to 5000:1), with excellent performance even at the top of this range. Due to its outstanding transformation characteristics, Teflon ® PTFE 640XT X can be extruded with very low lubricant levels over a wide reduction ratio range, while the extrusion pressure remains low. For example, Teflon ® PTFE 640XT X can be extruded into wire with excellent performance in the reduction ratio range of 1000:1 to 4500:1 with a single lubricant level of 16% (based on total weight). This means that a single PTFE/lubricant mixture can be used for many constructions being manufactured in the same size extruder line. In addition, the excellent high reduction ratio performance means that products made in small-bore machines with other lower reduction ratio rated fine powders can now be extruded in larger ones, which represent a considerable economic advantage, since more material can be extruded per extrusion. This also means that longer lengths of wire or tubing can be achieved in one extrusion. Teflon ® PTFE 640XT X meets the requirements of ASTM D 4895-10, Type I, Grade 1, Class C. Typical Applications Teflon ® PTFE 640XT X is mainly used for insulation of high-performance wire and cables, as well as tubing. It is also suitable for other typical applications such as additives where some properties of PTFE are required. |
产品描述 Product Description
用途：电线电缆应用;添加剂;绝缘材料;管件;
加工条件：挤出 Extrusion
性能特点： 低吸湿性; 耐化学性; 电气性好; 低摩擦系数; 食品接触; 韧性好; 耐候抗UV; Weather resistance is good,Good flexibility,Good Electrical Properties,Low coefficient of friction,Food contact compliance,Solvent resistance,Low moisture absorption
填料：PTFE
| 技术参数 Technical Data | |||
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物理性能 PHYSICAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
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密度 Density |
2.16 | g/cm³ | ASTM D4895 , ISO 12086 |
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表观密度 Apparent density |
0.50 | g/cm³ | ASTM D4895 , ISO 12086 |
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平均颗粒尺寸 Average particle size |
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-- -- |
450 | µm | ASTM D4895 |
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-- -- |
450 | µm | ISO 12086 |
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热性能 THERMAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
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熔融温度 Melting temperature |
ASTM D4591 , ISO 12086 | ||
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-- -- 2 |
326 | ℃ | ASTM D4591，ISO 12086 |
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-- -- 3 |
℃ | ASTM D4591，ISO 12086 | |
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热不稳定性指数 Thermal instability index |
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-- -- |
ASTM D4895 | ||
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-- -- |
ISO 12086 | ||
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补充信息 Supplementary information |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
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挤出压力 Extrusion pressure |
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at RR = 1600：1 at RR = 1600：1 |
MPa | ASTM D4895 | |
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at RR = 1600：1 at RR = 1600：1 |
MPa | ISO 12086 | |
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at RR = 2500：1 at RR = 2500：1 |
MPa | ASTM D4895 | |
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at RR = 2500：1 at RR = 2500：1 |
MPa | ISO 12086 | |
| 备注 |
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| 1 一般属性：这些不能被视为规格。 |
| 2 Second |
| 3 Initial |
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