Methods obtaining gypsum whiskers via calcining dihydrate or hemihydrate gypsum perform high energy consumption. It also performs potential environmental impacts. New methods with energy-saving, high-efficiency, and environmentally friendly perform great challenges, which aim at fabricating gypsum whiskers even nanowhiskers. In this study, we used high-concentration calcium acetate solution and dilute sulfuric acid to fabricate anhydrite calcium sulfate nanowhiskers with microemulsion solution at room temperature. For further research on regulation and modification of its surface, calcium sulfates were modified by silicone quaternary ammonium salt and fatty acid methyl ester sulfonate in order to study their surface structure and crystal evolution during modification. After characterization, it indicated that the phase of calcium sulfate transmitted from anhydrite phase into dihydrite phase with a slight change on the surface layers. Benefiting from stability and activity properties of calcium sulfate nanowhiskers after modified, the compressive strength of cement paste with only 1% calcium sulfates performed increased absolutely 10.1% and 4.3% at conservation age of 3 days and 28 days.

通过煅烧二水合或半水合石膏获得石膏晶须的方法消耗大量能量。它还会对环境造成潜在影响。节能，高效，环保的新方法面临着巨大的挑战，这些挑战旨在制造石膏晶须甚至纳米晶须。在这项研究中，我们使用高浓度乙酸钙溶液和稀硫酸在室温下用微乳液溶液制备硬石膏硫酸钙纳米晶须。为了进一步研究其表面的调节和改性，用有机硅季铵盐和脂肪酸甲酯磺酸盐对硫酸钙进行了改性，以研究其在改性过程中的表面结构和晶体演化。表征后 结果表明，硫酸钙相从硬石膏相转变为重石膏相，其表层变化很小。得益于改性后的硫酸钙纳米晶须的稳定性和活性，在仅保存3天和28天时，仅含1％硫酸钙的水泥浆的抗压强度绝对提高了10.1％和4.3％。