Self-healing non-asphalt-based waterproof coating and preparation method thereof

By introducing a self-healing non-asphalt-based waterproof coating made of styrene-butadiene rubber-graft-4,4'-dithiodiphenylamine, the problems of poor adhesion and lack of self-repair in existing waterproof coatings have been solved, achieving the effects of automatic repair and environmentally friendly construction.

CN120795800BActive Publication Date: 2026-03-03FOSHAN KESHUN BUILDING MATERIAL CO LTD
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Patent Information

Application Number
CN202511225744.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-08-29
Publication Date
2026-03-03
Estimated Expiration
2045-08-29

AI Technical Summary

Technical Problem

Existing waterproof coatings have problems such as poor adhesion when exposed to water, easy water seepage, and lack of self-healing function.

Method used

A self-healing non-asphalt-based waterproof coating is adopted. By introducing styrene-butadiene rubber-graft-4,4'-dithiodiphenylamine, the self-healing function is achieved by breaking and reforming its chemical bonds. Combined with the synergistic effect of aromatic oil, styrene-butadiene rubber emulsion and powder, the flexibility and adhesion strength of the coating are improved.

Benefits of technology

The coating can automatically repair itself after being damaged by external forces, restoring its waterproof performance, reducing maintenance costs, avoiding construction pollution, and improving construction efficiency and waterproof performance.

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Abstract

The present application relates to waterproof coating technical field, especially to a kind of self-healing non-asphalt-based waterproof coating and preparation method thereof.The waterproof coating of the present application includes the following weight parts of raw materials: aromatic hydrocarbon oil 25-40 parts, butyl rubber-gaft-4,4'-dithiodiamine 3-6 parts, petroleum resin 5-10 parts, emulsifier 4-8 parts, water 30-50 parts, other additives 0.4-2 parts, powder 8-20 parts and butyl rubber emulsion 2-5.The waterproof coating of the present application introduces butyl rubber-gaft-4,4'-dithiodiamine, a key modified component, which gives the coating excellent self-healing function.Using specific raw materials for cooperation, better synergy between raw materials is formed, and the overall performance of waterproof coating such as low-temperature flexibility and bonding strength is improved.
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Citation Information

Patent Citations

  • Preparation method of high-performance liquid styrene butadiene rubber

    CN103539949A

  • Non-asphalt-based spray quick-setting liquid rubber waterproof coating and preparation method thereof

    CN106366776A