Particle reinforced epoxy matrix composites have recently been intensively prepared and investigated in numerous publications as a promising alternative gamma ray shielding materials. In this work, a DDM (4,4′-diaminodiphenylmethene) hardener modified by AA (acrylic acid) was used to cure the epoxy resin (E51) at room temperature. To obtain high performance epoxy composites, 30% by weight of tungsten borides WB and WB₂ microparticles treated with a KH-560 silane coupling agent were incorporated into the epoxy matrix (EP0) and the composites were coded as EP30WB and EP30WB₂, respectively. SEM (scanning electron microscopy) analysis confirmed the good dispersion of these fillers within the polymeric matrix. The structure of the synthesized epoxy matrix and its related composites were characterized using the FTIR (Fourier transform infrared) analysis. According to the FTIR spectra, the epoxy matrix as well as the micro-composites were effectively cured in less than 4 h. This rapid curing process can be justified by the reaction of the epoxy and acrylamide groups as well as the strong reactivity of DDM with AA. The thermal stability of the samples was evaluated by DSC (differential scanning calorimetry) and TGA (thermal gravimetric analysis). DSC analysis revealed that EP30WB₂ has a high exothermic peak (166.68 °C) compared to EP30WB (154.48 °C). In addition, the TGA analysis showed that T_5% (temperature of 5% weight loss) increased from 207.01 °C for EP0 to 339.65 °C for EP30WB and 346.92 °C for EP30WB₂. Meanwhile, the char yield (Yc) at 800 °C has increased from 23.85% for EP0 to 40.36% for EP30WB and 45.99% for EP30WB₂, respectively. Moreover, using a Cs-137 radioactive source, the linear and mass attenuation coefficients (μ, μ_m), half-value layer (HVL), ten-value layer (TVL) and radiation protection efficiency (RPE) for the epoxy matrix EP0, EP30WB and EP30WB₂ micro-composites were experimentally determined. The shielding efficiency for EP0 was 17% and it was improved to 32% and 35% by filling EP0 matrix with WB and WB₂, respectively.

粒子增强环氧树脂基复合材料最近作为一种有前途的替代伽马射线屏蔽材料在许多出版物中得到了深入的制备和研究。在这项工作中，使用由 AA（丙烯酸）改性的 DDM（4,4'-二氨基二苯基亚甲基）硬化剂在室温下固化环氧树脂（E51）。为了获得高性能的环氧复合材料，将 30% 重量的硼化钨 WB 和 WB ₂微粒用 KH-560 硅烷偶联剂处理过加入环氧树脂基体 (EP0) 中，复合材料被编码为 EP30WB 和 EP30WB ₂， 分别。SEM（扫描电子显微镜）分析证实了这些填料在聚合物基质中的良好分散。使用 FTIR（傅里叶变换红外）分析表征合成的环氧树脂基体及其相关复合材料的结构。根据 FTIR 光谱，环氧树脂基体和微复合材料在不到 4 小时内有效固化。这种快速固化过程可以通过环氧和丙烯酰胺基团的反应以及 DDM 与 AA 的强反应性来证明。通过DSC（差示扫描量热法）和TGA（热重分析）评估样品的热稳定性。DSC 分析表明 EP30WB ₂与 EP30WB (154.48 °C) 相比，具有高放热峰 (166.68 °C)。此外，TGA 分析表明，T _5%（重量损失为 5% 的温度）从 EP0 的 207.01 °C 增加到 EP30WB 的 339.65 °C 和 EP30WB _{2 的}346.92 °C 。同时，800 °C 下的炭产率 (Yc) 从 EP0 的 23.85%分别增加到 EP30WB 的 40.36% 和 EP30WB _{2 的}45.99% 。此外，使用CS-137的放射性源，所述线性和质量衰减系数（μ，μ_米），半值层（HVL），十值层（TVL）和辐射防护效率（RPE为环氧基质EP0） , EP30WB 和 EP30WB ₂微复合材料是通过实验确定的。EP0 的屏蔽效率为 17%，通过用 WB 和 WB ₂分别填充 EP0 矩阵可以提高到 32% 和 35% 。