Abstract: To improve the sound insulation performance of the coating，hollow glass microspheres（HGM）and alumina microspheres were selected as fillers to study the effect ofdifferent types of functional fillers on the sound insulation performance of waterborne epoxycoatings. Surface-treated HGM was uniformly distributed in the coating to test the relationshipbetween the sound transmission loss（TL）and the amount of HGM，and on the basis of the above study，small-sized alumina microspheres were further added to study their filling rolebetween the voids of the HGM stack. The results showed that the average TL of the coatingwith 15% HGM was improved by 5% compared with that of the aluminum foil substrate；the addition of alumina could play a role in filling and reducing the fragmentation of HGM. The coating with 15% HGM and 12% Al₂O₃ had a better sound isolation effect in the frequency band of 2 000-4 000 Hz，and the average TL of the coating was further improved by 3%compared with that of the coating with only 15% HGM，and had a better performance on thetransmission loss of the specific sound generating equipment in the 40-80 dB sound pressurelevel range of noise，compared with the transmission loss of aluminum foil substrate increasedby 6 dB. This study provided a valuable reference for the development of environmentallyfriendly coatings with sound insulation effects for the equipment such as mechanical pumps， compressors，and motors. 

Key words: waterborne epoxy coatings, soundproof coatings, hollow glass microspheres, aluminum oxide

摘要： 为提升涂料的隔声性能，选择空心玻璃微珠（HGM）和氧化铝微球为填料，研究不同类别的功能型填料复配对水性环氧涂料隔声性能的影响。将经过表面处理的 HGM均匀分布于涂层中，测试声音传递损失（TL）与 HGM用量之间的关系，并在上述研究基础上进一步添加小粒径的氧化铝微球，研究其在 HGM堆积空隙间的填充作用。结果表明：添加 15%HGM的涂层平均 TL较铝箔基体提升了 5%；添加氧化铝起到了填充和减少 HGM破碎的作用。含 15%HGM和 12%Al₂O₃的涂层在 2 000~ 4 000 Hz频段的隔声效果更好，相较于仅含 15%HGM的涂层平均 TL进一步提升了 3%。对特定发声设备在 40~80 dB声压级范围的噪音，相比铝箔基体的传递损失提高了 6 dB，具有较好的隔声性能。可为开发机械泵、压缩机、电机等设备外壳具有隔声效果的环保涂层提供参考。

关键词: 水性环氧树脂, 隔声涂料, 空心玻璃微珠, 氧化铝

CLC Number: 

• TQ635. 5