一种吸水膨胀自修复型预铺防水卷材及其制备方法
By adding polyacrylate water-absorbing material and alkali-soluble polymer film to the pre-laid waterproof membrane, the leakage problem caused by the separation of the pre-laid membrane from the concrete is solved, achieving a self-healing waterproof effect, which is suitable for waterproof construction of underground buildings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG LUBAN BUILDING MATERIALS TECH CO LTD
- Filing Date
- 2023-05-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing pre-laid waterproof membranes are prone to separation from the concrete structure during construction due to structural stress shrinkage, foundation settlement, and other reasons, resulting in gaps and groundwater leakage.
The pre-laid waterproof membrane is a water-absorbing and self-healing type. It incorporates polyacrylate water-absorbing material into the polymer plastic waterproof sheet. When it comes into contact with water, it expands and seals the gaps. The alkali-soluble polymer film dissolves and initiates expansion during concrete pouring, filling the gaps. Combined with a sand anti-adhesion layer, it enhances the adhesion.
It effectively prevents leakage in concrete structures, solves the problem of water seepage caused by the separation of the membrane from the concrete, provides long-term waterproofing, and does not affect construction in waterless environments, making it environmentally friendly and safe.
Smart Images
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