A new high waterproof and flame‐retardant material was developed by using polylactic acid as a binder. Fireproof composite materials have excellent physical, mechanical, and flame‐retardant properties. The water resistance property of fireproof composites increases as the polylactic acid doping ratio increases. Also, the mechanical performance test showed that the flexural strength of the composite materials reached 14.75 MPa a polylactic acid amount of 25 wt%. More so, the surface of the inorganic materials (magnesium hydroxide and aluminum hydroxide), were uniformly covered by the polylactic acid providing good interfacial compatibility between the inorganic materials and polylactic acid. The results of scanning electron microscopy showed that the fracture cross‐section of the composites was smooth and dense. Thermogravimetric analysis and fire resistance testing further confirmed that the fireproof materials have good thermal stability. The as‐prepared composite materials with improved physical and mechanical properties could be utilized to partitions in public buildings, non‐load bearing walls, and a sandwich for fire doors.

中文翻译：

---

高防水性能防火材料的制备与研究

通过使用聚乳酸作为粘合剂，开发了一种新型的高防水阻燃材料。防火复合材料具有出色的物理，机械和阻燃性能。防火复合材料的耐水性随聚乳酸掺杂比例的增加而提高。另外，机械性能测试表明，复合材料的弯曲强度达到14.75MPa，聚乳酸量为25wt％。而且，无机材料（氢氧化镁和氢氧化铝）的表面被聚乳酸均匀地覆盖，从而在无机材料和聚乳酸之间提供了良好的界面相容性。扫描电子显微镜的结果表明，复合材料的断面光滑而致密。热重分析和耐火测试进一步证实了该防火材料具有良好的热稳定性。所制备的具有改善的物理和机械性能的复合材料可用于在公共建筑，非承重墙和防火门夹层中进行分隔。