厂家(产地) 美国杜邦 牌号 350-j 加工级别 注塑级,挤出级,吹塑级
特性级别 增韧级,热稳定性,抗化学性 用途级别 管材级,薄膜级,薄壁制品 销售方式 品牌经销
类型 标准料
for inventory control purposes product name may be followed by an x.
products labeled pfa 350 and pfa 350 x are equivalent and all information in this document is applicable to both.
typical application
applications for dupont™ teflon ® pfa 350 include extruded tubing for use in handling aggressive fluids at high pressures; chemical linings for pipes used in the chemical processing industry; film for high flex service; and traditional extruded, injection-molded, or blow-molded articles requiring the unique performance of teflon ® .
description
dupont™ teflon ® pfa 350 is a general-purpose fluoroplastic resin available in pellet form. compared with other grades of teflon ® pfa, its most unique features are a relatively low flow rate, greatly increased flex life, and enhanced resistance to environmental stress-cracking over both teflon ® pfa 340 and 345 (teflon ® pfa 350 has a typical mit folding endurance of 500,000*, compared to that of 15,000 and 50,000 for teflon ® pfa 340 and 345 respectively). teflon ® pfa 350 is preferred when extended service is required in hostile environments involving chemical, thermal, and mechanical stress. table 1 shows the typical property data for teflon ® pfa 350.
teflon ® pfa 350 is used when traditional extrusion and molding processes are required for producing products with the superior properties of a fluoroplastic resin. compared to other thermoplastics, the high melt strength and thermal stability of teflon ® pfa 350 can be used to improve processing rates. compared with other fluoroplastics, creep resistance at high service temperatures provides a superior balance and level of end-use properties. teflon ® pfa 350 combines the processing ease of conventional thermoplastics with many properties similar to those of polytetrafluoroethylene.
properly processed products made from neat teflon ® pfa 350 resin provide the superior properties characteristic of fluoroplastic resins: chemical inertness, exceptional dielectric properties, heat resistance, toughness and flexibility, low coefficient of friction, non-stick characteristics, negligible moisture absorption, low flammability, performance at temperature extremes, and excellent weather resistance.
in a flame situation, products of teflon ® pfa 350 resist ignition and do not promote flame spread. when ignited by flame from other sources, their contribution of heat is very small and added at a slow rate with very little smoke.
teflon ® pfa 350 meets the requirements of astm d3307, type iii
总体
材料状态 •已商用：当前有效
性能特点 •低摩擦系数
•高 escr（抗应力裂纹）
•良好的电气性能
•良好的抗蠕变性
•良好的熔体强度
•良好的柔韧性
•流动性低
•耐化学性良好
•耐气候影响性能良好
•耐热性，中等
•热稳定性，良好
•韧性良好
•吸潮性差
•烟释放，低
用途 •薄膜
•衬里
•吹塑成型应用
•管道
形式 •颗粒料
加工方法 •吹塑成型
•挤出
•树脂传递成型
•压缩模塑
•注射成型
物理性能 额定值 单位制 测试方法
比重 2.15 g/cm³ astm d792
熔流率 (372°c/5.0 kg) 2.0 g/10 min astm d3307, iso 12086
吸水率 (24 hr) < 0.030 % astm d570
硬度 额定值 单位制 测试方法
硬度计硬度 (邵氏 d) 55 astm d2240, iso 868
机械性能 额定值 单位制 测试方法
抗张强度 astm d3307, iso 12086
23°c 28.0 mpa
250°c 14.0 mpa
伸长率 astm d3307, iso 12086
断裂, 23°c 300 %
断裂, 250°c 500 %
弯曲模量 astm d790, iso 178
23°c 625 mpa
250°c 69.0 mpa
热性能 额定值 单位制 测试方法
熔融温度 305 °c astm d4591
电气性能 额定值 单位制 测试方法
体积电阻率 1.0e+18 ohm·cm astm d257, iso 1325
介电强度
0.250 mm 3 80 kv/mm astm d149
0.250 mm 80 kv/mm iec 60243-1
介电常数 (1 mhz) 2.03 astm d150, iec 60250
耗散因数 (1 mhz) < 0.00020 astm d150, iec 60250
可燃性 额定值 单位制 测试方法
ul 阻燃等级 4 v-0 ul 94
极限氧指数 > 95 % astm d2863, iso 4589-2
补充信息 额定值 单位制 测试方法
critical shear rate (372°c) 12.0 sec^-1
mit folding endurance 5 (200.0 µm) 5.0e+5 cycles astm d2176
weather and chemical resistance: outstanding
pfa 日本旭硝子 p-76p 33000元/吨
pfa 日本丸新 rmp(2) 32000元/吨
pfa 浙江星腾化工 ew-2 31000元/吨
pfa 浙江巨化 jd-25 31500元/吨
pfa 浙江巨化 pf860 13500元/吨
pfa 美国杜邦 340 32500元/吨
pfa 美国杜邦 340 bk 31500元/吨
pfa 美国杜邦 420hp 21300元/吨
pfa 日本大金 ap-201 31500元/吨
pfa 日本大金 ap-210 31800元/吨
pfa 日本大金 j-340 bk 31500元/吨
pfa 日本大金350-j 31800元/吨
另有其它原料牌号、型号（可提供质量参数表报告）
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