CAJ | 학술논문

该文章描述了一种通过渗透低粘性自凝单体从而加强石膏强度的方法,此方法在石膏样本中渗入经稀释的不同浓度的氰基丙烯酸正丁酯,然后采用纳米压痕试验检测制得材料的硬度和弹性模量,标准单边切口梁法检测材料的断裂韧性(K1c),用装有带活塞环夹具的万能试验机检测双轴强度.另外还应用附属能量色散X线光谱分析仪观察单体渗入石膏的深度.氰基丙烯酸盐的浸润和自凝作用将石膏的双轴向强度和断裂韧性分别提高了39%和30%.试验石膏样本的硬度和弹性模量也得以小幅度提高.因此,该法不失为一种原位强化和/或修复石膏的理想方法.
해문장묘술료일충통과삼투저점성자응단체종이가강석고강도적방법,차방법재석고양본중삼입경희석적불동농도적청기병희산정정지,연후채용납미압흔시험검측제득재료적경도화탄성모량,표준단변절구량법검측재료적단렬인성(K1c),용장유대활새배협구적만능시험궤검측쌍축강도.령외환응용부속능량색산X선광보분석의관찰단체삼입석고적심도.청기병희산염적침윤화자응작용장석고적쌍축향강도화단렬인성분별제고료39%화30%.시험석고양본적경도화탄성모량야득이소폭도제고.인차,해법불실위일충원위강화화/혹수복석고적이상방법.
The paper presents a method of strengthening gypsum by infiltration of a low viscous autopolymerising monomer. The gypsum specimens were infiltrated by diluted one component butyl-cyanoacrylate at different concentrations. Nanoindentation was employed to measure the changes in hardness and elastic modulus. A standard single-edge-notched beam (SENB) method was used to measure the fracture toughness (K1c). The biaxial strength was measured by a universal test machine with a piston on ring jig. The affiliated energy dispersive X-ray spectroscopy (EDX) was used to observe the depth of infiltration. Infiltration and autopolymerisation of the cyanoacrylate improved the biaxial strength and fracture toughness of the gypsum by ~39% and ~30%, respectively. The hardness and elastic modulus for the treated specimens increased slightly as wel. The proposed method provides a convenient way to streng then and/or repair gypsum products in situ.