A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation process of waterproof and impermeable concrete containing siliceous anti-crack waterproof agent
The invention relates to the technical field of concrete, and discloses a preparation process of waterproof and impermeable concrete containing a siliceous anti-crack waterproof agent, which comprises the following steps: reacting 4, 4 '-biphenyl diisocyanate with hydroxyl silicone oil to obtain an isocyanate-terminated organosilicon copolymer; methyl in the cyano silicone oil is a hydrophobic group. The isocyanate-terminated organosilicon copolymer is dissolved in the amino silicon oil microemulsion, and the amino silicon oil modified copolymer waterproof agent is obtained under the catalysis of triethylamine. Then the prepared concrete sample is soaked in the amino silicon oil modified polyurethane waterproof agent, siloxane with reaction active groups in the waterproof agent can interact to form a uniform and compact siloxane hydrophobic film with high hydrophobicity and low surface tension, and the siloxane hydrophobic film is evenly distributed on the surface of the porous concrete sample; water on the surface of the concrete sample cannot permeate into the concrete, and the waterproof and anti-seepage effects are excellent.
本发明涉及混凝土技术领域，且公开了一种含硅质抗裂防水剂的防水抗渗混凝土的制备工艺，4,4’‑联苯二异氰酸酯与羟基硅油反应，得到端异氰酸酯有机硅共聚物。氰基硅油中的甲基是一种疏水性集团。将端异氰酸酯有机硅共聚物溶于氨基硅油微乳液中，在三乙胺的催化下得到氨基硅油改性共聚物防水剂。再将制备好的混凝土试件浸泡在氨基硅油改性聚氨酯防水剂中，防水剂中具有反应活性基的硅氧烷，能够相互作用形成均匀致密具有较强的憎水性和较低的表面张力的硅氧烷憎水膜，均匀的分布在多孔的混凝土试样表面，使得混凝土试样表面的水无法渗入到混凝土中，具有优良的防水抗渗效果。
Preparation process of waterproof and impermeable concrete containing siliceous anti-crack waterproof agent
The invention relates to the technical field of concrete, and discloses a preparation process of waterproof and impermeable concrete containing a siliceous anti-crack waterproof agent, which comprises the following steps: reacting 4, 4 '-biphenyl diisocyanate with hydroxyl silicone oil to obtain an isocyanate-terminated organosilicon copolymer; methyl in the cyano silicone oil is a hydrophobic group. The isocyanate-terminated organosilicon copolymer is dissolved in the amino silicon oil microemulsion, and the amino silicon oil modified copolymer waterproof agent is obtained under the catalysis of triethylamine. Then the prepared concrete sample is soaked in the amino silicon oil modified polyurethane waterproof agent, siloxane with reaction active groups in the waterproof agent can interact to form a uniform and compact siloxane hydrophobic film with high hydrophobicity and low surface tension, and the siloxane hydrophobic film is evenly distributed on the surface of the porous concrete sample; water on the surface of the concrete sample cannot permeate into the concrete, and the waterproof and anti-seepage effects are excellent.
本发明涉及混凝土技术领域，且公开了一种含硅质抗裂防水剂的防水抗渗混凝土的制备工艺，4,4’‑联苯二异氰酸酯与羟基硅油反应，得到端异氰酸酯有机硅共聚物。氰基硅油中的甲基是一种疏水性集团。将端异氰酸酯有机硅共聚物溶于氨基硅油微乳液中，在三乙胺的催化下得到氨基硅油改性共聚物防水剂。再将制备好的混凝土试件浸泡在氨基硅油改性聚氨酯防水剂中，防水剂中具有反应活性基的硅氧烷，能够相互作用形成均匀致密具有较强的憎水性和较低的表面张力的硅氧烷憎水膜，均匀的分布在多孔的混凝土试样表面，使得混凝土试样表面的水无法渗入到混凝土中，具有优良的防水抗渗效果。
Preparation process of waterproof and impermeable concrete containing siliceous anti-crack waterproof agent
一种含硅质抗裂防水剂的防水抗渗混凝土的制备工艺
SHI QIANG (author) / AI JUN (author) / LI WEIQUAN (author) / XIONG ZI (author) / LI TAO (author) / CHEN YIXIONG (author) / TIAN YIFAN (author) / ZHOU XIAOJU (author) / AO LIMING (author) / LI PEICHENG (author)
2023-08-11
Patent
Electronic Resource
Chinese
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