Longhui Zhu
Longhui Zhu has a total of 4 co-authors. Here are the top co-authors by number of shared publications:
- Huizhou Luo
Shenzhen Feiyang Protech Corp., Ltd., Shenzhen 518100, China
1 shared publication - Junle Su
Shenzhen Feiyang Protech Corp., Ltd., Shenzhen 518100, China
1 shared publication - Weicai Yang
Institute of Water Conservancy and Hydroelectric Power Research, Beijing 100038, China
1 shared publication - Yang Wang
College of Materials and Energy, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China
1 shared publication
Latest Publications
- Open Access
Preparation of High-Performance Polyaspartic Polyurea and Application in Hydraulic Concrete Protection
The long-term durability of hydraulic concrete infrastructure is severely compromised by water penetration, carbonation, and chloride ion erosion, necessitating the development of high-performance protective coatings. This study designed two polyaspartic ester polyurea coatings, PAE-PTMEG and PAE-PPG, derived from isocyanate prepolymers with polytetramethylene ether glycol (PTMEG) and polypropylene glycol (PPG) soft segments, respectively. The results demonstrated that the PTMEG-based prepolymer exhibited higher reactivity, leading to shorter curing times. The resulting PAE-PTMEG coating showed outstanding mechanical properties (tensile strength: 43.8 Mpa; elongation: 646.1%) and excellent water resistance (−4 mg·cm−2·d−1), complete carbonation resistance, and high frost resistance (200 cycles). This work confirms that tailoring the soft segment structure is a crucial strategy for developing durable polyurea coatings, with PAE-PTMEG showing significant potential for protecting critical water conservancy infrastructure.
Open AccessPreparation of High-Performance Polyaspartic Polyurea and Application in Hydraulic Concrete Protection
The long-term durability of hydraulic concrete infrastructure is severely compromised by water penetration, carbonation, and chloride ion erosion, necessitating the development of high-performance protective coatings. This study designed two polyaspartic ester polyurea coatings, PAE-PTMEG and PAE-PPG, derived from isocyanate prepolymers with polytetramethylene ether glycol (PTMEG) and polypropylene glycol (PPG) soft segments, respectively. The results demonstrated that the PTMEG-based prepolymer exhibited higher reactivity, leading to shorter curing times. The resulting PAE-PTMEG coating showed outstanding mechanical properties (tensile strength: 43.8 Mpa; elongation: 646.1%) and excellent water resistance (−4 mg·cm−2·d−1), complete carbonation resistance, and high frost resistance (200 cycles). This work confirms that tailoring the soft segment structure is a crucial strategy for developing durable polyurea coatings, with PAE-PTMEG showing significant potential for protecting critical water conservancy infrastructure.