The development of magnesium oxychloride cement (MOC) can convert wastes in the potash industry into valuable products and reduce CO₂ emission. The use of acid radicals has the potential to enhance the water resistance of MOC. However, because of the internal stress formed during the crystallization process, the occurrence of cracks accompanied by a significant decrease in the mechanical properties is inevitable. Inspired by the sandcastle worm and organic-inorganic copolymerization, a novel strategy was proposed, which employed phytic acid (PA) to copolymerize with phase 5 crystals to reduce the internal stress and prevent crack generation. XPS and TG-DSC analyses revealed that organic-inorganic copolymers were successfully produced. Furthermore, the compressive strength (CS) and water resistance of MOC-PA were significantly enhanced. The enhanced properties were associated with the coordination bonds and high tension of the rigid rings in phytic acid, which was sufficient to overcome the internal stress. Additionally, the repeated hydrolysis of rod-like phase 5 generated a gel-like phase from the outside inward, enhancing their water resistance. Compared with MOC-0, MOC-0.6 showed a 17.8% increase in CS and a 102.3% increase in water resistance. The microscopic mechanisms of the enhanced CS and water resistance of high-performance greener cements were proposed.

氯氧化镁水泥（MOC）的开发可以将钾盐工业中的废物转化为有价值的产品并减少CO ₂排放。酸基的使用具有增强MOC耐水性的潜力。然而，由于在结晶过程中形成的内应力，不可避免地出现伴随机械性能显着降低的裂纹。受沙堡蠕虫和有机-无机共聚的启发，提出了一种新的策略，该方法采用植酸（PA）与5相晶体共聚，以减少内部应力并防止裂纹的产生。XPS和TG-DSC分析表明，已成功生产出有机-无机共聚物。此外，MOC-PA的抗压强度（CS）和耐水性显着增强。增强的性能与植酸中的配位键和刚性环的高张力有关，足以克服内部压力。另外，棒状相5的反复水解从外部向内产生凝胶状相，从而增强了其耐水性。与MOC-0相比，MOC-0.6的CS含量提高了17.8％，耐水性提高了102.3％。提出了增强绿色环保水泥的CS和耐水性的微观机理。