Modified palygorskite, method for preparing same, composition for asphalt waterproof coating, asphalt waterproof coating, method for preparing same, and application thereof

By combining modified attapulgite clay with vulcanizing agents, polymer elastomers, and other materials, a three-dimensional network structure is constructed, which solves the problems of sag and slippage of asphalt waterproof coatings under high temperature conditions, achieving improved bonding strength and anti-slip performance, and possessing high heat resistance and long-term stability.

CN121628417BActive Publication Date: 2026-07-24DEZHOU KESHUN BUILDING MATERIALS CO LTD
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Patent Information

Application Number
CN202511829896.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-12-05
Publication Date
2026-07-24
Estimated Expiration
2045-12-05

AI Technical Summary

Technical Problem

Existing asphalt waterproof coatings are prone to sagging and slippage under high temperature environments, and their bonding strength and cohesive strength are insufficient, making it difficult to effectively waterproof vertical surfaces or sloping roofs.

Method used

By combining modified attapulgite with vulcanizing agents, polymer elastomers, and inorganic fillers, a three-dimensional network structure is constructed through interfacial vulcanization, which enhances the cohesive strength and adhesion of the coating, and utilizes the catalytic effect of rare earth ions to stabilize the coating performance.

Benefits of technology

It significantly improves the shear resistance and bonding strength of asphalt waterproof coatings, resists slippage of the waterproof layer, and has high heat resistance and long-term stability with no performance degradation.

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Abstract

The application relates to the technical field of building waterproofing, and discloses modified attapulgite, a preparation method of the modified attapulgite, a composition for asphalt waterproof coating, asphalt waterproof coating, a preparation method of the asphalt waterproof coating and application. The preparation method of the modified attapulgite comprises the following steps: mixing and treating a dispersion medium in which a modifier is dispersed and attapulgite at 90-110 DEG C to obtain the modified attapulgite; the modifier is selected from cerium stearate and / or lanthanum stearate; and the mass ratio of the attapulgite to the modifier is 1:0.03-0.2. The asphalt waterproof coating provided by the application can form a three-dimensional network structure through 'interface vulcanization', and can endow the product with higher shearing resistance and bonding strength, and can effectively resist the overall slippage of the waterproof layer.
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