A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides a waste polystyrene-based water reducing agent and a preparation method thereof, and relates to the technical field of polymer waste treatment. The waste polystyrene-based concrete water reducing agent is prepared from the following components in parts by weight: 9 to 11 parts of waste polystyrene, 30 to 40 parts of solvent, 0.1 to 0.3 part of initiator, 3 to 4 parts of maleic anhydride, 16 to 20 parts of concentrated sulfuric acid, 0.1 to 0.3 part of phosphorus pentoxide and 5 to 8 parts of polyethylene glycol. According to the method, peroxide degradation and carboxyl introduction are carried out at the same time, polyethylene glycol long-chain branch introduction and sulfonation reaction are carried out at the same time, and the molecular weight of the product is further reduced through ultrasonic waves, so that a water-soluble high-molecular product with low molecular weight and carboxyl, polyethylene glycol long-chain branch and sulfonate radical groups is obtained; according to the waste polystyrene-based water reducing agent provided by the invention, the water reducing rate and the fluidity retention rate are relatively high, and the performance is excellent.
本申请提出了一种废旧聚苯乙烯基减水剂及其制备方法，涉及聚合物废物处理技术领域。该废旧聚苯乙烯基混凝土减水剂，以重量份数计，其制备原料包括以下组分：废旧聚苯乙烯9‑11份、溶剂30‑40份、引发剂0.1‑0.3份、马来酸酐3‑4份、浓硫酸16‑20份、五氧化二磷0.1‑0.3份和聚乙二醇5‑8份。本申请通过将过氧化物降解和羧基引入同时进行、聚乙二醇长支链的引入和磺化反应同时进行以及超声波进一步降低产物分子量的方法得到分子量较低的具有羧基、聚乙二醇长支链、磺酸根基团的水溶性高分子产物，即本申请中的废旧聚苯乙烯基减水剂，该减水剂实现了较高的减水率和流动性保持率，具有优异的性能。
The invention provides a waste polystyrene-based water reducing agent and a preparation method thereof, and relates to the technical field of polymer waste treatment. The waste polystyrene-based concrete water reducing agent is prepared from the following components in parts by weight: 9 to 11 parts of waste polystyrene, 30 to 40 parts of solvent, 0.1 to 0.3 part of initiator, 3 to 4 parts of maleic anhydride, 16 to 20 parts of concentrated sulfuric acid, 0.1 to 0.3 part of phosphorus pentoxide and 5 to 8 parts of polyethylene glycol. According to the method, peroxide degradation and carboxyl introduction are carried out at the same time, polyethylene glycol long-chain branch introduction and sulfonation reaction are carried out at the same time, and the molecular weight of the product is further reduced through ultrasonic waves, so that a water-soluble high-molecular product with low molecular weight and carboxyl, polyethylene glycol long-chain branch and sulfonate radical groups is obtained; according to the waste polystyrene-based water reducing agent provided by the invention, the water reducing rate and the fluidity retention rate are relatively high, and the performance is excellent.
本申请提出了一种废旧聚苯乙烯基减水剂及其制备方法，涉及聚合物废物处理技术领域。该废旧聚苯乙烯基混凝土减水剂，以重量份数计，其制备原料包括以下组分：废旧聚苯乙烯9‑11份、溶剂30‑40份、引发剂0.1‑0.3份、马来酸酐3‑4份、浓硫酸16‑20份、五氧化二磷0.1‑0.3份和聚乙二醇5‑8份。本申请通过将过氧化物降解和羧基引入同时进行、聚乙二醇长支链的引入和磺化反应同时进行以及超声波进一步降低产物分子量的方法得到分子量较低的具有羧基、聚乙二醇长支链、磺酸根基团的水溶性高分子产物，即本申请中的废旧聚苯乙烯基减水剂，该减水剂实现了较高的减水率和流动性保持率，具有优异的性能。
Waste polystyrene-based water reducing agent and preparation method thereof
一种废旧聚苯乙烯基减水剂及其制备方法
SONG BO (author)
2024-11-08
Patent
Electronic Resource
Chinese
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C08J
Verarbeitung
,
WORKING-UP
/
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
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