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聚氨酯类化灌材料是一种防渗堵漏能力较强,固结强度较高的防渗固结材料.其特点是不怕水.这是由于其浆液中含有未反应的异氰酸酯基团,遇水发生化学反应,交联生成不溶于水的聚合物之故.聚氨酯类化学灌浆材料是目前世界上水电工程中应用较广的品种之一.日本开发应用最早,已形成系列产品出售.我国自七十年代初开始研究,现已开发了油溶性、水溶性和弹性三大系列聚氨酯化学灌浆材料,有十余种产品.水溶性化灌材料是能与水混溶;油溶性是指能溶于有机溶液;弹性是指浆材固化后具有弹性特点.下面分别简介它们的浆材组成、性能及应用效果.
Polyurethane-based irrigation material is a seepage-proof plugging ability, high consolidation strength seepage consolidation materials characterized by not afraid of water.This is because the slurry contains unreacted isocyanate groups, with water Chemical reaction, cross-linked to generate water-insoluble polymers.Polyurethane chemical grouting material is currently one of the more widely used varieties of hydropower projects in the world.Japan development and application of the earliest, has formed a series of products for sale.Our country since seven The beginning of the decade of research, has developed three series of oil-soluble, water-soluble and flexible polyurethane chemical grouting material, there are more than 10 kinds of products. Water-soluble irrigation material is water-miscible; oil- Organic solution; Elasticity refers to the elastic characteristics of the cured pulp after the following brief introduction of their pulp composition, performance and application results.