Research and Application of New Polybasic Acid Ning Mengmeng, Wang Peng, Chen Jinfeng, Xu Zhengdong, Long Changjun, Li Yutao, Kong Weizhong, Jia Jiangfen, Zeng Zhiguo and Jia Yuanzhao E3S Web Conf., 165 (2020) 05024 Published online: 01 May 2020 DOI: 10.1051/e3sconf/202016505024