聚氨酯改性聚羧酸盐的合成及与水泥净浆的相互作用

doi:10.11896/cldb.23040167

Abstract
Figure/Table
References
Related Citation (14)

Download:

Full Text ( PDF ) (3613KB)
Export: BibTeX | EndNote (RIS)

Abstract The optimum preparation process was obtained by orthogonal experimental design. Comb-like polycarboxylates (M-PCE and O-PCE) with the same degree of polymerization of main chain and different side chain length and functional groups were synthesized by free radical polymerization. They were compared with two commercial polycarboxylates (C-PCE-1 and C-PCE-2). The adsorption behavior, fluidity, Zeta potential and surface tension of different polycarboxylates and Portland cement were analyzed, the interaction between polyurethane modified polycarboxylate (M-PCE) and cement paste was investigated. The results show that due to the incomplete hydrolysis of the siloxane group, the role of M-PCE in cement-based materials can promote cement hydration, and the other three polycarboxylates (O-PCE, C-PCE-1 and C-PCE-2) can delay the hydration due to the shielding effect of their chain alkyl. At the same time, it is found that M-PCE with siloxane group has a high Zeta potential absolute value, which can make cement concrete have excellent surface tension and fluidity, that is, the access of polyurethane side chain has a significant positive impact on the performance of polycarboxylic acid in cement paste.

Key words： polycarboxylic acid water reducer polyurethane modification cement paste

Published: 10 November 2024 Online: 2024-11-11

CLC number:

TQ172

Fund:National Natural Science Foundation of China(52209154, 52278239), Hunan Province's ‘Three Top’ Innovative Ta-lent Project-‘Hejian’ Talent Project(2022RC1175), Ministry of Education's ‘Chunhui Plan’ Collaborative Research Project (HZKY20220358), Key R & D Program Project of Hunan Provincial Department of Science and Technology (2021SK2044), Hunan Provincial Natural Science Foundation (2022JJ30042, 2023JJ30040), Hunan Province Graduate Innovation Project (CX20220869).

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	XIANG Shuncheng
	ZHENG Tingxiang
	GAO Yingli
	SHI Wei
	JIANG Zhen
	HE Yanqi
	ZENG Wei

Cite this article:

XIANG Shuncheng,ZHENG Tingxiang,GAO Yingli, et al. Synthesis of Polyurethane Modified Polycarboxylate and Its Interaction with Cement Paste[J]. Materials Reports, 2024, 38(21): 23040167-7.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.23040167 OR http://www.mater-rep.com/EN/Y2024/V38/I21/23040167

1 Lei L, Hirata T, Plank J. Cement and Concrete Research, 2022, 157, 106826.
2 Wen X D, Feng L, Hu D Y, et al. Construction and Building Materials, 2019, 211, 26.
3 Yu B B, Zeng Z, Ren Q Y, et al. Journal of Molecular Structure, 2016, 1120, 171.
4 Liu X, Wang Z M, Zhu J, et al. Colloids and Surfaces A: Physicochemical and Engineering, 2014, 448, 119.
5 Plank J, Li H Q, Ilg M, et al. Cement and Concrete Research, 2016, 84, 20.
6 Lange A, Plank J. Cement and Concrete Research, 2016, 79, 131.
7 Feng H, Feng Z, Wang W, et al. Construction and Building Materials, 2021, 292, 123285.
8 Yang Y, Ran Q P, Liu J P, et al. New Building Materials, 2011, 7, 54.
9 He Y, Zhang X, Hooton R D. Construction and Building Materials, 2017, 132, 112.
10 Gao Y L, Duan K R, Xiang S C, et al. Frontiers in Materials, 2021, 8, 751585.
11 Borget P, Galmiche L, Le M. Colloids and Surfaces A: Physicochemical and Engineering, 2005, 3, 173.
12 Wang B, Wang L. Journal of Building Materials, 2003, 6(1), 90.
13 Xiang S C, Tan Y S, Gao Y L. Frontiers in Material, 2021, 9, 1.
14 Xiang S C, Gao Y L. Journal of Applied Polymer Science, 2021, 138(6), 1.
15 Švegl F, Šuput-Strupi J, Škrlep L, et al. Cement and Concrete Research, 2008, 38, 945.
16 Xiang S C, Shi C J, Zhang H L. Journal of Applied Polymer Science, 2018, 135(7), 45873.
17 Kong F R, Pan L S, Wang C M, et al. Construction and Building Mate-rials, 2016, 105, 545.
18 Luo Y, Wang X, Wei C, et al. Bulletin of the Chinese Ceramic Society, 2020, 39(6), 10(in Chinese).
罗毅, 王鑫, 卫超, 等. 硅酸盐通报, 2020, 39(6), 10.
19 Kong X M, Liu H, Lu Z B, et al. Cement and Concrete Research, 2015, 67, 168.
20 Scrivener K L, Nonat A. Cement and Concrete Research, 2011, 41, 651.
21 Ylmén R, Jäglid U, Steenari B M, et al. Cement and Concrete Research, 2009, 39(5), 433.
22 Ylmén R, Wadsö L, Panas I. Cement and Concrete Research, 2010, 40(10), 1541.
23 Li Y W, Yang C L, Zhang Y F, et al. Construction and Building Mate-rials, 2014, 64, 324.
24 Ouyang X W, Xu S D, Ma Y W, et al. Journal of the Chinese Ceramic Society, 2021,49(5), 972(in Chinese).
欧阳小伟, 许世达, 马玉玮, 等. 硅酸盐学报, 2021, 49(5), 972.
25 Zhang Y, Kong X. Cement and Concrete Research, 2015, 69, 1.
26 Plank J, Hirsch C. Cement and Concrete Research, 2007, 37(4), 537.
27 Fan W, Stoffelbach F, Rieger J, et al. Cement and Concrete Research, 2012, 42(1), 166.
28 Ge H S, Sun Z P, Yang H J, et al. Journal of the Chinese Ceramic Society, 2023, 51(5), 1293(in Chinese).
葛好升, 孙振平, 杨海静, 等. 硅酸盐学报, 2023, 51(5), 1293.