A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of demulsifier and application of demulsifier in asphalt mixture
The invention belongs to the technical field of demulsification and dehydration, and discloses a preparation method of a demulsifier and application of the demulsifier in an asphalt mixture. The preparation method of the demulsifier comprises the following steps: reacting acidified clay minerals with gamma-methacryloxypropyltrimethoxysilane to obtain modified clay minerals; reacting the modified clay mineral with triethylene tetramine to obtain a multi-tertiary amine clay mineral; and reacting the multi-tertiary amine clay mineral with bromohexadecane to prepare the demulsifier. The demulsifier is a multi-quaternary ammonium salt type cationic demulsifier, through positive ions contained on the surface of clay mineral and positive charges carried by quaternary ammonium salt, the double-electrode layer structure on the surface of anionic emulsified asphalt is changed, the double-electrode layer thickness is compressed, electrostatic repulsion between emulsified asphalt is reduced, and the demulsification effect is good; when the asphalt mixture is prepared, the adhesion effect of asphalt particles and aggregate can be effectively promoted, water in the asphalt mixture can be discharged easily, and solidification forming of the asphalt mixture is accelerated.
本发明属于破乳脱水技术领域，且公开了一种破乳剂的制备方法及在沥青混合料中的应用。破乳剂的制备方法，包括：酸化后的黏土矿物与γ‑甲基丙烯酰氧基丙基三甲氧基硅烷反应，得到改性黏土矿物；改性黏土矿物与三乙烯四胺反应，得到多叔胺基黏土矿物；多叔胺基黏土矿物与溴代十六烷反应，制得破乳剂。所述破乳剂为多季铵盐型阳离子破乳剂，通过黏土矿物表面含有的阳离子和季铵盐所带的正电荷，改变阴离子乳化沥青表面的双电层结构，压缩双电层厚度，降低乳化沥青之间的静电斥力，破乳效果好；在制备沥青混合料时，能够有效促进沥青微粒与骨料的黏附作用，有助于沥青混合料中水分的排出，加快沥青混合料的凝固成型。
Preparation method of demulsifier and application of demulsifier in asphalt mixture
The invention belongs to the technical field of demulsification and dehydration, and discloses a preparation method of a demulsifier and application of the demulsifier in an asphalt mixture. The preparation method of the demulsifier comprises the following steps: reacting acidified clay minerals with gamma-methacryloxypropyltrimethoxysilane to obtain modified clay minerals; reacting the modified clay mineral with triethylene tetramine to obtain a multi-tertiary amine clay mineral; and reacting the multi-tertiary amine clay mineral with bromohexadecane to prepare the demulsifier. The demulsifier is a multi-quaternary ammonium salt type cationic demulsifier, through positive ions contained on the surface of clay mineral and positive charges carried by quaternary ammonium salt, the double-electrode layer structure on the surface of anionic emulsified asphalt is changed, the double-electrode layer thickness is compressed, electrostatic repulsion between emulsified asphalt is reduced, and the demulsification effect is good; when the asphalt mixture is prepared, the adhesion effect of asphalt particles and aggregate can be effectively promoted, water in the asphalt mixture can be discharged easily, and solidification forming of the asphalt mixture is accelerated.
本发明属于破乳脱水技术领域，且公开了一种破乳剂的制备方法及在沥青混合料中的应用。破乳剂的制备方法，包括：酸化后的黏土矿物与γ‑甲基丙烯酰氧基丙基三甲氧基硅烷反应，得到改性黏土矿物；改性黏土矿物与三乙烯四胺反应，得到多叔胺基黏土矿物；多叔胺基黏土矿物与溴代十六烷反应，制得破乳剂。所述破乳剂为多季铵盐型阳离子破乳剂，通过黏土矿物表面含有的阳离子和季铵盐所带的正电荷，改变阴离子乳化沥青表面的双电层结构，压缩双电层厚度，降低乳化沥青之间的静电斥力，破乳效果好；在制备沥青混合料时，能够有效促进沥青微粒与骨料的黏附作用，有助于沥青混合料中水分的排出，加快沥青混合料的凝固成型。
Preparation method of demulsifier and application of demulsifier in asphalt mixture
一种破乳剂的制备方法及在沥青混合料中的应用
WEN LONG (author) / ZHAO YUHUA (author) / YANG WEI (author) / WANG DONG (author) / LI SHUQING (author) / MA XIN (author) / DUAN ZONGYAN (author) / ZENG QINGBING (author) / WEI WEI (author) / QIU CHUAN (author)
2024-03-22
Patent
Electronic Resource
Chinese
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