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A platform for research: civil engineering, architecture and urbanism
Super absorbent polymer hollow microsphere and concrete moisturizing and curing film thereof
The invention relates to a super absorbent polymer hollow microsphere and a concrete moisturizing curing film thereof, the polymer hollow microsphere is formed by photo-initiation Pickering emulsion polymerization, the Pickering emulsion comprises an emulsifier, water and an oil phase, the emulsifier is photo-polymerizable amphiphilic copolymer particles, and the oil phase comprises a photo-curing monomer and a photoinitiator. Under illumination, photopolymerizable amphiphilic copolymer particles and photocurable monomers are subjected to polymerization reaction respectively to obtain polymer hollow microspheres with hydrophilic shells, and a large amount of water can be quickly adsorbed and stored in internal cavities through the strong hydrophilicity of the shell layers. The water storage capacity can be greatly improved through the cavity structures in the polymer hollow microspheres, the concrete moisturizing and curing film prepared from the polymer hollow microspheres has extremely high water retention capacity, and water adsorbed in the film can be released to concrete through the capillary phenomenon of the rough surface of the base cloth layer; the moisture required in the concrete curing period is ensured.
本发明涉及一种高吸水性聚合物空心微球及其混凝土保湿养护膜，聚合物空心微球是通过光引发Pickering乳液聚合而成，Pickering乳液包含乳化剂、水和油相，乳化剂为可光聚合的双亲性共聚物颗粒，油相包含光固化单体和光引发剂。在光照下，可光聚合的双亲性共聚物颗粒和光固化单体分别聚合反应得到具有亲水性外壳的聚合物空心微球，通过壳层的强亲水性可快速吸附大量的水并储存进内部空腔，与传统的吸水性树脂相比，本发明的聚合物空心微球内部的空腔结构可极大提升储水量，采用本发明的聚合物空心微球制备的混凝土保湿养护膜具有极强的保水能力，内部吸附的水分可通过基布层粗糙表面的毛细管现象向混凝土释放，保证混凝土养护期内所需的水分。
Super absorbent polymer hollow microsphere and concrete moisturizing and curing film thereof
The invention relates to a super absorbent polymer hollow microsphere and a concrete moisturizing curing film thereof, the polymer hollow microsphere is formed by photo-initiation Pickering emulsion polymerization, the Pickering emulsion comprises an emulsifier, water and an oil phase, the emulsifier is photo-polymerizable amphiphilic copolymer particles, and the oil phase comprises a photo-curing monomer and a photoinitiator. Under illumination, photopolymerizable amphiphilic copolymer particles and photocurable monomers are subjected to polymerization reaction respectively to obtain polymer hollow microspheres with hydrophilic shells, and a large amount of water can be quickly adsorbed and stored in internal cavities through the strong hydrophilicity of the shell layers. The water storage capacity can be greatly improved through the cavity structures in the polymer hollow microspheres, the concrete moisturizing and curing film prepared from the polymer hollow microspheres has extremely high water retention capacity, and water adsorbed in the film can be released to concrete through the capillary phenomenon of the rough surface of the base cloth layer; the moisture required in the concrete curing period is ensured.
本发明涉及一种高吸水性聚合物空心微球及其混凝土保湿养护膜，聚合物空心微球是通过光引发Pickering乳液聚合而成，Pickering乳液包含乳化剂、水和油相，乳化剂为可光聚合的双亲性共聚物颗粒，油相包含光固化单体和光引发剂。在光照下，可光聚合的双亲性共聚物颗粒和光固化单体分别聚合反应得到具有亲水性外壳的聚合物空心微球，通过壳层的强亲水性可快速吸附大量的水并储存进内部空腔，与传统的吸水性树脂相比，本发明的聚合物空心微球内部的空腔结构可极大提升储水量，采用本发明的聚合物空心微球制备的混凝土保湿养护膜具有极强的保水能力，内部吸附的水分可通过基布层粗糙表面的毛细管现象向混凝土释放，保证混凝土养护期内所需的水分。
Super absorbent polymer hollow microsphere and concrete moisturizing and curing film thereof
一种高吸水性聚合物空心微球及其混凝土保湿养护膜
ZHAO WEI (author) / CAO FENG (author) / LI TAOTAO (author) / ZHOU YUZHE (author) / SHAN YONGSHENG (author)
2023-06-06
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
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
,
Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
/
C09J
ADHESIVES
,
Klebstoffe
/
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
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