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A platform for research: civil engineering, architecture and urbanism
Preparation method of solid polycarboxylate superplasticizer
The invention discloses a preparation method of a solid polycarboxylate superplasticizer, which comprises the following steps: by taking methylallyl alcohol polyoxyethylene ether (HPEG), acrylic acid (AA) or methacrylic acid (MAA) and hydroxyethyl acrylate (2-HEA) as main raw materials, mercaptoacetic acid as a chain transfer agent and azodiisobutyronitrile (AIBN) as an initiator, preparing the solid polycarboxylate superplasticizer by a bulk polymerization method, the comprehensive solid polycarboxylic acid water reducing agent is synthesized in a molten state of methylallyl alcohol polyoxyethylene ether. No solvent is used in the production process of the product, and no waste gas, waste liquid or waste solid is generated; the product has excellent performance, and has the characteristics of high water-reducing rate, small concrete slump loss, low mixing amount, good adaptability and the like. The concrete admixture can be widely applied to ultrahigh-strength concrete, self-leveling concrete, pump concrete, prefabricated part concrete and dry-mixed mortar.
本发明公开了一种固体聚羧酸减水剂的制备方法，以甲基烯丙醇聚氧乙烯醚（HPEG）、丙烯酸（AA）或甲基丙烯酸（MAA）、丙烯酸羟乙酯（2‑HEA）为主要原材料，巯基乙酸为链转移剂，偶氮二异丁腈（AIBN）为引发剂，采用本体聚合方法，在甲基烯丙醇聚氧乙烯醚熔融状态下合成的一种综合型固体聚羧酸减水剂。本产品生产过程不使用任何溶剂，无任何废气、废液、废固产生；产品性能优良，具有减水率高、混凝土坍落度损失小，掺量低、适应性好等特点。可广泛应用于超高强混凝土、自流平混凝土、泵送混凝土、预制构件混凝土和干混砂浆中。
Preparation method of solid polycarboxylate superplasticizer
The invention discloses a preparation method of a solid polycarboxylate superplasticizer, which comprises the following steps: by taking methylallyl alcohol polyoxyethylene ether (HPEG), acrylic acid (AA) or methacrylic acid (MAA) and hydroxyethyl acrylate (2-HEA) as main raw materials, mercaptoacetic acid as a chain transfer agent and azodiisobutyronitrile (AIBN) as an initiator, preparing the solid polycarboxylate superplasticizer by a bulk polymerization method, the comprehensive solid polycarboxylic acid water reducing agent is synthesized in a molten state of methylallyl alcohol polyoxyethylene ether. No solvent is used in the production process of the product, and no waste gas, waste liquid or waste solid is generated; the product has excellent performance, and has the characteristics of high water-reducing rate, small concrete slump loss, low mixing amount, good adaptability and the like. The concrete admixture can be widely applied to ultrahigh-strength concrete, self-leveling concrete, pump concrete, prefabricated part concrete and dry-mixed mortar.
本发明公开了一种固体聚羧酸减水剂的制备方法，以甲基烯丙醇聚氧乙烯醚（HPEG）、丙烯酸（AA）或甲基丙烯酸（MAA）、丙烯酸羟乙酯（2‑HEA）为主要原材料，巯基乙酸为链转移剂，偶氮二异丁腈（AIBN）为引发剂，采用本体聚合方法，在甲基烯丙醇聚氧乙烯醚熔融状态下合成的一种综合型固体聚羧酸减水剂。本产品生产过程不使用任何溶剂，无任何废气、废液、废固产生；产品性能优良，具有减水率高、混凝土坍落度损失小，掺量低、适应性好等特点。可广泛应用于超高强混凝土、自流平混凝土、泵送混凝土、预制构件混凝土和干混砂浆中。
Preparation method of solid polycarboxylate superplasticizer
一种固体聚羧酸减水剂的制备方法
CUI QINGLONG (author) / SUN WEIWEI (author) / ZOU LINGJUN (author) / LEI HANG (author) / LIU DANDAN (author)
2024-07-26
Patent
Electronic Resource
Chinese
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