牌号简介 About |
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Udel聚砜是一种高韧度、高刚性、高强度的热塑性塑料,具有出色的耐水解性。Udel P-3500 LCD MB系列聚合物特别适用于溶剂型工艺生产多孔中空纤维、平片膜。这些高分子量聚合物被用于各种膜过滤产品,如肾透析、水处理、生物处理、食品和饮料加工、工业气体分离。 Udel聚砜聚合物具有许多膜工业行业所需性能,如优异的机械性能、在2~132PH值条件下稳定、优异的耐腐蚀性和良好的耐中等浓度氯的性能 。是析出水平低、不溶解材料,适用于饮用水和与食品接触的产品。可用蒸汽、环氧乙烷和电子束辐射消毒。 Udel P-3500 LCD MB系列聚合物包含一系列窄分子量分布的牌号,如下图所示。各牌号环状二聚体水平要低于原来的P-3500NT 11牌号 。这在溶液处理,如膜生产工艺中非常重要重要,因为它提高了纺丝原液的溶液稳定性、减少了设备的结垢。 Udel® polysulfone is a tough, rigid, high-strength thermoplastic with outstanding hydrolytic resistance. Udel® P-3500 LCD MB series polymers are particularly well suited for the fabrication of porous hollow fiber and flat sheet membranes using a solvent-based process. These high molecular weight polymers are used in a variety of membrane filtration applications, such as renal dialysis, water treatment, bio-processing, food and beverage processing, and industrial gas separation. Udel® polysulfone polymers possess a number of attributes that are valued by the membrane industry, including excellent mechanical properties, stability at pH levels from 2-13, excellent resistance to caustic and good resistance to moderate concentrations of chlorine. They feature low levels of extractible and insoluble materials making them suitable for drinking water and food contact uses. They may be sterilized using steam, ethylene oxide and e-beam radiation. Udel® P-3500 LCD MB series polymers are available in various narrow molecular weight range grades, as shown below. Each grade features reduced levels of cyclic dimer compared to the previous grade, P-3500 NT 11. This can be important in solution processing applications such as membrane production, as it leads to improved dope solution stability and reduced equipment fouling. The Udel® P-3500 LCD MB series polymers are soluble in commercially available, water-miscible, dipolar, aprotic solvents, such as dimethylacetamide (DMAC), dimethylformamide (DMF), and N-methylpyrrolidone (NMP). These materials offer membrane producers very good control of pore size and pore size distribution, high membrane strength, and good film-forming properties. |
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 |
密度 Density |
1.24 | g/cm³ | ASTM D792 |
吸水率 Water absorption rate |
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24hr 24hr |
0.30 | % | ASTM D570 |
分子量 molecular weight |
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P-3500 LCD MB3 P-3500 LCD MB3 |
78000 到 84000 | g/mol | |
P-3500 LCD MB7 P-3500 LCD MB7 |
77000 到 83000 | g/mol | |
溶液粘度 Solution viscosity 2 |
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P-3500 LCD MB3 P-3500 LCD MB3 |
2.2 到 2.8 | Pa·s | |
P-3500 LCD MB7 P-3500 LCD MB7 |
Pa·s | ||
机械性能 MECHANICAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
拉伸模量 Tensile modulus |
MPa | ASTM D638 | |
拉伸强度 tensile strength |
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断裂 fracture |
MPa | ASTM D638 | |
拉伸应变 Tensile strain |
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断裂 fracture |
% | ASTM D638 | |
弯曲模量 Bending modulus |
MPa | ASTM D790 | |
弯曲强度 bending strength |
MPa | ASTM D790 | |
冲击性能 IMPACT |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
悬臂梁缺口冲击强度 Impact strength of cantilever beam notch |
J/m | ASTM D256 | |
拉伸冲击强度 Tensile impact strength |
kJ/m² | ASTM D1822 | |
热性能 THERMAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
热变形温度 Hot deformation temperature |
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1.8 MPa,未退火 1.8 MPa, unannealed |
℃ | ASTM D648 | |
线性热膨胀系数 Linear coefficient of thermal expansion |
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MD MD |
1/℃ | ASTM D696 | |
电气性能 Electrical performance |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
体积电阻率 Volume resistivity |
ohms·cm | ASTM D257 | |
介电强度 Dielectric strength |
kV/mm | ASTM D149 | |
介电常数 Dielectric constant |
ASTM D150 | ||
60 Hz 60 Hz |
ASTM D150 | ||
1 kHz 1 kHz |
ASTM D150 | ||
1 MHz 1 MHz |
ASTM D150 | ||
耗散因数 Dissipation factor |
ASTM D150 | ||
60 Hz 60 Hz |
ASTM D150 | ||
1 kHz 1 kHz |
ASTM D150 | ||
1 MHz 1 MHz |
ASTM D150 |
备注 |
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1 一般属性:这些不能被视为规格。 |
2 40℃、30s -1的剪切速率,测得DMAc中含有25 %(重量)聚合物溶液 |
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