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在防护涂料和地坪材料领域，天冬聚脲、环氧树脂和聚氨酯是三大主流材料。很多人只知道"它们都是化工材料"，但不清楚各自的优势和适用场景。本文从化学结构到工程应用，一次性讲透。

环氧树脂河流桌是近两年最火的DIY项目之一。但网上很多教程要么不够详细，要么跳过了关键步骤，导致新手实操时遇到气泡、不固化、开裂等问题。本文从材料准备到最终抛光，把每一步都讲透。

选环氧树脂不需要背参数表，只需要搞清楚四件事：用在什么场景、需要什么类型的树脂、配什么固化剂、粘度多少合适。

For aged colored EPDM granular floors with intact base structure, two mainstream renovation methods are widely adopted: colored adhesive (with color paste) coating and thin-layer EPDM particle resurfacing. This article compares their construction process, performance, cost, appearance and service life, analyzes respective strengths and weaknesses, and provides reference for reasonable scheme selection in actual projects.

Aged EPDM particle ground often suffers from loose particles, local shedding, surface fading and rough wear, while the base structure remains intact. Traditional resurfacing and overall renovation involve high costs and long construction cycles. This paper introduces a simple and efficient repair method using colored elastic adhesive. The process directly reinforces and renovates the original ground without removing valid EPDM particles. It realizes particle rebonding, surface sealing and color restoration in one construction procedure. The technology features simple operation, low cost and fast curing speed, which can effectively restore the flatness, wear resistance and appearance consistency of old EPDM venues. It is suitable for routine maintenance and medium and minor repair of kindergartens, community fitness grounds and park elastic pavements.

Traditional EPDM particle ground renovation usually adopts particle resurfacing or overall reconstruction, which has disadvantages such as high cost, long construction period and unnecessary material waste for slightly and moderately damaged old venues. Colored adhesive repair technology, as an efficient and targeted maintenance method for aged EPDM grounds, uses color-matched special elastic adhesive to penetrate, bond and seal the worn, loose and faded original particle layer. This technology can effectively solve common problems including particle shedding, surface voids, color fading and weak bonding without removing the original intact EPDM base material. This article elaborates on the repair principle and applicable damage scenarios of colored EPDM adhesive, analyzes its unique advantages compared with traditional renovation methods, introduces the standardized on-site construction steps in detail, and puts forward corresponding post-construction maintenance measures.