材料科学
发泡剂
复合材料
环境友好型
发泡剂
抗压强度
复配
临界胶束浓度
丙烯酸
热稳定性
傅里叶变换红外光谱
吸水率
聚合物
化学工程
多孔性
胶束
共聚物
化学
水溶液
有机化学
生态学
聚氨酯
工程类
生物
作者
Ming‐Bo Yang,Haiting Gu,Lang Rui,Hongwen Yan,Qiang Zhao,Jianyong Wang,Xugang Dang
出处
期刊:Giant
[Elsevier]
日期:2024-03-01
卷期号:17: 100236-100236
标识
DOI:10.1016/j.giant.2024.100236
摘要
In this research, a new eco-friendly collagen polypeptide-based foaming agent (CPFC) was prepared via a hydrophobic grafting modification of the collagen polypeptide (CP) from oily acrylic resin, in which the CP was extracted from leather wastes. The molecular structure of CPFC was characterized by FTIR, TGA, XRD, and laser particle size tests. The results showed that the oily acrylic acid molecular chain segments effectively copolymerized with CP, improving the hydrophilic and lipophilic balance of CP molecules. Given the increase of acrylic resin content in CPFC, the surface tension of CPFC at the critical micelle concentration gradually decreased and tended toward the critical value (30 mN/m). The foamability and foaming multiple of 9-CPFC and 7-CPFC reached 535 mL and 31.89 times, respectively. Next, we prepared a CPFC-based foam concrete with a dry density of 500 Kg/m3 via compounding a mechanical CPFC foaming agent with concrete. The resulting CPFC-based foam concrete was then characterized using a universal testing machine, thermal conductivity meter, ultra-depth 3d microscope, and other analysis techniques. The results indicated that the 5-CPFC foam concrete possessed good foam stability and compatibility. Moreover, the pore size distribution of the foam concrete was uniform, showing a less stringy pore structure, and the water absorption rate and thermal conductivity levels were 27.8% and 0.61 W/m·K, respectively. The compressive strength of cement was approximately 1.37 MPa, which exceeds the national standard. Moreover, it was found that the CPFC possessed certain retarding properties that were similar to cement, suggesting that it is a highly suitable additive for foam concrete.
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