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A platform for research: civil engineering, architecture and urbanism
Polyether air entraining agent as well as preparation method and application thereof
The invention belongs to the technical field of concrete admixtures, and discloses a polyether air entraining agent, and a preparation method and application thereof. The optimal proportion of fatty alcohol-polyoxyethylene ether, sulfamic acid, a catalyst and a foam stabilizer is screened by using a single factor experiment; screening optimal preparation parameters, and weighing fatty alcohol-polyoxyethylene ether, sulfamic acid, a catalyst and a foam stabilizer according to the screened optimal proportion; the preparation method comprises the following steps: adding weighed fatty alcohol-polyoxyethylene ether, sulfamic acid and a catalyst into a flask under the protection of nitrogen, and continuously stirring; heating the flask, carrying out constant-temperature reaction for a certain time, cooling, adding the modified silicon resin polyether microemulsion, and fully and uniformly stirring to obtain the polyether air entraining agent. The high-performance concrete polyether air entraining agent is prepared and synthesized, the workability and homogeneity of concrete can be improved, the freezing resistance of the concrete is improved, and meanwhile the comprehensive durability of the concrete can be greatly improved.
本发明属于混凝土外加剂技术领域，公开了一种聚醚类引气剂、制备方法及应用，利用单因素实验筛选脂肪醇聚氧乙烯醚、氨基磺酸、催化剂和稳泡剂的最优配比；筛选最佳制备参数，并按照筛选的最优配比称取脂肪醇聚氧乙烯醚、氨基磺酸、催化剂和稳泡剂；在氮气保护条件下，将称取的脂肪醇聚氧乙烯醚、氨基磺酸和催化剂投入烧瓶中，不停搅拌；对烧瓶进行加热，恒温反应一定时间，降温后加入改性硅树脂聚醚微乳液，充分搅拌均匀，得到聚醚类引气剂。本发明制备合成了一种高性能的混凝土聚醚类引气剂，能够改善混凝土的和易性和匀质性，提高混凝土的抗冻性，同时可以大幅度提高混凝土的综合耐久性。
Polyether air entraining agent as well as preparation method and application thereof
The invention belongs to the technical field of concrete admixtures, and discloses a polyether air entraining agent, and a preparation method and application thereof. The optimal proportion of fatty alcohol-polyoxyethylene ether, sulfamic acid, a catalyst and a foam stabilizer is screened by using a single factor experiment; screening optimal preparation parameters, and weighing fatty alcohol-polyoxyethylene ether, sulfamic acid, a catalyst and a foam stabilizer according to the screened optimal proportion; the preparation method comprises the following steps: adding weighed fatty alcohol-polyoxyethylene ether, sulfamic acid and a catalyst into a flask under the protection of nitrogen, and continuously stirring; heating the flask, carrying out constant-temperature reaction for a certain time, cooling, adding the modified silicon resin polyether microemulsion, and fully and uniformly stirring to obtain the polyether air entraining agent. The high-performance concrete polyether air entraining agent is prepared and synthesized, the workability and homogeneity of concrete can be improved, the freezing resistance of the concrete is improved, and meanwhile the comprehensive durability of the concrete can be greatly improved.
本发明属于混凝土外加剂技术领域，公开了一种聚醚类引气剂、制备方法及应用，利用单因素实验筛选脂肪醇聚氧乙烯醚、氨基磺酸、催化剂和稳泡剂的最优配比；筛选最佳制备参数，并按照筛选的最优配比称取脂肪醇聚氧乙烯醚、氨基磺酸、催化剂和稳泡剂；在氮气保护条件下，将称取的脂肪醇聚氧乙烯醚、氨基磺酸和催化剂投入烧瓶中，不停搅拌；对烧瓶进行加热，恒温反应一定时间，降温后加入改性硅树脂聚醚微乳液，充分搅拌均匀，得到聚醚类引气剂。本发明制备合成了一种高性能的混凝土聚醚类引气剂，能够改善混凝土的和易性和匀质性，提高混凝土的抗冻性，同时可以大幅度提高混凝土的综合耐久性。
Polyether air entraining agent as well as preparation method and application thereof
一种聚醚类引气剂及其制备方法与应用
LU SHENGJUN (author) / DONG DANDAN (author) / DENG LEI (author) / LYU CHANGWEI (author) / LUO XIAOFENG (author) / SHEN JIANRONG (author) / ZHANG BINGWANG (author)
2023-04-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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