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Phenyl sulfonic block polymer modified polycarboxylate water reducer
The invention provides a phenyl sulfonic block polymer modified polycarboxylate water reducer. The polycarboxylate water reducer mother liquor is prepared from the following materials in parts by weight: 348-365 parts of polyether macro-monomers, 18-26 parts of acrylic acid, 10-14 parts of sulfonic acid monomers, 3-8 parts of benzene ring monomers, 3.2-4.3 parts of an initiator, 1.1-1.5 parts of achain transfer agent and the balance being water, the total mass is 1000 parts, and the solid content is 40%. The polymerization process comprises the following steps: step 1, initiating copolymerization of a benzene ring monomer and a sulfonic acid monomer at 50-60 DEG C to obtain a block polymer I; step 2, copolymerizing a polyether macro-monomer and acrylic acid at the room temperature to obtain a block polymer II; and step 3, dropwise adding a mixed solution of the block polymer I, acrylic acid and a chain transfer agent and an initiator solution into the block polymer II at the same timewithin 2-3 hours at the temperature of 30-45 DEG C, and cooling to the room temperature to obtain the benzene ring amide block polymer modified polycarboxylate water reducer mother liquor. Compared with a common water reducer, the provided polycarboxylate water reducer is better in adsorption and dispersion effects, stronger in slump loss resistance and better in early strength effect.
本发明提供一种苯基磺酸基嵌段聚合物改性聚羧酸减水剂，所述聚羧酸减水剂母液由以下材料制备而成：聚醚大单体348‑365份、丙烯酸18‑26份、磺酸类单体10‑14份，苯环类单体3‑8份、引发剂3.2‑4.3份、链转移剂1.1‑1.5份、其余为水，总质量为1000份，固含量为40％。聚合过程步骤一：以苯环类单体、磺酸类单体在50‑60℃温度下引发共聚得嵌段聚合物Ⅰ；步骤二：以聚醚大单体、丙烯酸在常温条件下共聚制得嵌段聚合物Ⅱ；步骤三：向嵌段聚合物Ⅱ中同时滴加嵌段聚合物Ⅰ、丙烯酸、链转移剂的混合液和引发剂溶液，在30‑45℃温度下滴加时间为2‑3h，冷却至室温后即得苯环酰胺嵌段聚合物改性的聚羧酸减水剂母液。本发明制备的聚羧酸减水剂相对普通减水剂吸附分散效果较佳，保坍能力更强且有早强效果。
Phenyl sulfonic block polymer modified polycarboxylate water reducer
The invention provides a phenyl sulfonic block polymer modified polycarboxylate water reducer. The polycarboxylate water reducer mother liquor is prepared from the following materials in parts by weight: 348-365 parts of polyether macro-monomers, 18-26 parts of acrylic acid, 10-14 parts of sulfonic acid monomers, 3-8 parts of benzene ring monomers, 3.2-4.3 parts of an initiator, 1.1-1.5 parts of achain transfer agent and the balance being water, the total mass is 1000 parts, and the solid content is 40%. The polymerization process comprises the following steps: step 1, initiating copolymerization of a benzene ring monomer and a sulfonic acid monomer at 50-60 DEG C to obtain a block polymer I; step 2, copolymerizing a polyether macro-monomer and acrylic acid at the room temperature to obtain a block polymer II; and step 3, dropwise adding a mixed solution of the block polymer I, acrylic acid and a chain transfer agent and an initiator solution into the block polymer II at the same timewithin 2-3 hours at the temperature of 30-45 DEG C, and cooling to the room temperature to obtain the benzene ring amide block polymer modified polycarboxylate water reducer mother liquor. Compared with a common water reducer, the provided polycarboxylate water reducer is better in adsorption and dispersion effects, stronger in slump loss resistance and better in early strength effect.
本发明提供一种苯基磺酸基嵌段聚合物改性聚羧酸减水剂，所述聚羧酸减水剂母液由以下材料制备而成：聚醚大单体348‑365份、丙烯酸18‑26份、磺酸类单体10‑14份，苯环类单体3‑8份、引发剂3.2‑4.3份、链转移剂1.1‑1.5份、其余为水，总质量为1000份，固含量为40％。聚合过程步骤一：以苯环类单体、磺酸类单体在50‑60℃温度下引发共聚得嵌段聚合物Ⅰ；步骤二：以聚醚大单体、丙烯酸在常温条件下共聚制得嵌段聚合物Ⅱ；步骤三：向嵌段聚合物Ⅱ中同时滴加嵌段聚合物Ⅰ、丙烯酸、链转移剂的混合液和引发剂溶液，在30‑45℃温度下滴加时间为2‑3h，冷却至室温后即得苯环酰胺嵌段聚合物改性的聚羧酸减水剂母液。本发明制备的聚羧酸减水剂相对普通减水剂吸附分散效果较佳，保坍能力更强且有早强效果。
Phenyl sulfonic block polymer modified polycarboxylate water reducer
苯基磺酸基嵌段聚合物改性聚羧酸减水剂
CHEN SHUDONG (author) / ZHANG YANFEI (author) / KE KAI (author) / YU JIANFENG (author) / SHI SHIRONG (author) / ZHENG HAOYU (author)
2020-05-29
Patent
Electronic Resource
Chinese
Phenyl cationic micro-monomer polymer modified block polycarboxylate water reducer
| European Patent Office | 2020
| European Patent Office | 2020