Preparation method and application of polyurethane foam wave-absorbing composite material

• Main Authors: LIU ZHONGQING, XU ZHAOXUAN
• Format: Patent
• Language: Chinese; English
• Published: 02.02.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention relates to the technical field of electromagnetic wave-absorbing materials, and particularly discloses a preparation method and application of a polyurethane foam wave-absorbing composite material. The preparation method of the polyurethane foam wave-absorbing composite material comprises the following steps: mixing polyurethane, iron-silicon-chromium alloy and carbon nanotubes to obtain a mixture; and pouring the mixture into a foaming agent, stirring, and pouring into a mold for foaming. The carbon nanotubes and the iron-silicon-chromium alloy are compounded and applied to foamed polyurethane, so that the range of a wave-absorbing frequency band can be expanded, and the wave-absorbing performance of the composite material is improved. 本申请涉及电磁吸波材料技术领域，具体公开了一种聚氨酯泡沫吸波复合材料的制备方法及应用。聚氨酯泡沫吸波复合材料的制备方法，将聚氨酯、铁硅铬合金和碳纳米管混合得到混合物；将混合物倒入发泡剂中搅拌后倒入模具发泡即可。本申请通过将碳纳米管和铁硅铬合金进行复配应用在发泡聚氨酯中，可拓展吸波频段的范围，提高了复合材料的吸波性能。