摘要本论文通过卤水-氨水法从卤水中制备出纳米级氢氧化镁。再通过木质素磺酸钠和硬脂酸镁分别对氢氧化镁进行表面改性。通过XRD表征,改性后的氢氧化镁晶型未受到破坏,极性面露出受到抑制。接触角测试中,当硬脂酸镁用量为2%时,改性的氢氧化镁与丙三醇试剂的接触角从未改性的88.94°下降到64.18 °;木质素磺酸钠的用量为5%时,改性后的氢氧化镁与丙三醇的接触角从未改性的88.94°下降到25.44°。两种改性剂均成功改性氢氧化镁,使氢氧化镁与高分子材料的相容性提高。9313
关键词: 氢氧化镁; 卤水; 改性; 阻燃剂
Abstract
Nanometer magnesium hydrate can be producted from brine with the method of brine-ammonia. Sodium lignosulphonate and magnesium stearate are used to modify magnesium hydrate. The productions were characterized by XRD. We can find that the crystal formation of the magnesium hydrate is not broken and the polar plane of modified magnesium hydrate has inhibited. The result of contact angle shows that the contact angle reduces from 88.94° to 64.18° when magnesium stearate is used to be modifier. And the contact angle reduces from 88.94° to 25.44°when sodium lignosulphonate works as modifier. Which means the compatibility of magnesium hydrate is improved in this way.
Key words: magnesium hydrate; brine; modification; flame retardant