Epoxy-modified acrylic salt two-component grouting material and preparation method thereof

By designing the molecular-level compatibility of epoxy-modified acrylate two-component grouting material, the problems of erosion resistance, bonding strength and elasticity of acrylate grouting materials are solved, achieving efficient and environmentally friendly underground engineering leak sealing effect, which is suitable for underground structures such as tunnels and subways.

CN122404898APending Publication Date: 2026-07-17CHINA RAILWAY 20TH BUREAU GROUP CO LTD +1
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Patent Information

Application Number
CN202610698406.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-20
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing acrylate grouting materials have poor erosion resistance in dynamic water environments, low bonding strength with concrete, imbalance between elasticity and strength, and poor compatibility with modified systems, resulting in unsatisfactory leak-sealing effects. Furthermore, traditional modification processes are energy-intensive and environmentally unfriendly.

Method used

A two-component epoxy-modified acrylate grouting material is used. Through molecular-level compatibility design between the modified epoxy acryloyl prepolymer and the acrylate system, combined with elastic toughening monomers, modified inorganic fillers and functional additives, the A and B components are prepared and stored independently, and mixed on site to avoid high-temperature stirring, reduce energy consumption and improve material performance.

Benefits of technology

It significantly improves the mechanical properties and durability of the cured body. The mixed slurry can penetrate micro-cracks. After curing, it has high compressive strength, high elongation at break, high bonding strength, resistance to acid, alkali and salt corrosion, no erosion or peeling in dynamic water environment, and is environmentally friendly. It is suitable for leak sealing in underground engineering.

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Abstract

本发明公开了一种环氧改性丙烯酸盐双组份注浆材料及其制备方法,涉及地下工程注浆堵漏材料技术领域。该材料包括独立储存的A、B组份,A组份含改性环氧丙烯酰基预聚体、丙烯酸羟丙酯、弹性增韧单体、无机矿物填料、pH调节剂、络合剂和水;B组份含复合引发剂、碱性调节剂、成膜助剂、防沉剂、耐水增强剂和水。其制备方法包括:首先制备改性环氧丙烯酰基预聚体,然后分别制备A组份和B组份,由A组份和B组份共同组成所述注浆材料。本发明材料粘度低、渗透性好,固化后抗压强度≥600kPa、断裂伸长率≥330%、粘结强度≥3.1MPa,耐动水冲蚀及化学腐蚀,制备工艺温和可控,适用于隧道、地铁等复杂堵漏工况。
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