Water swelling rubber is an excellent waterproof material. With the support and recommendation of the majority of design and construction personnel, this material has been widely used for many years in underground engineering of various types of reinforced concrete, self-waterproof structures, and its excellent elasticity, extensibility, and expansion and waterproofing properties. Known throughout the country, the material's superior water resistance, chemical resistance, durability and weather resistance have been confirmed by its day and night service underground shopping malls, underground garages, underground diversion works, caisson, flood control walls and many other projects. The water-swollen rubber is a special material that has a water-swelling function and is prepared by mixing a hydrophilic polyurethane material with rubber. When immersed in water, due to the presence of a large number of hydrophilic groups (CH2CH2-O) in the polyurethane, this group and a large number of water molecules can be combined with hydrogen bonds, so that the intermolecular force of the polymer Weakening, resulting in an increase in the volume of the rubber, due to the effect of hydrogen bonds, the water molecules are firmly pulled, and even under the mechanical compression and suction, the water will not be extruded, but this water expansion effect is reversible, When the water-swollen rubber is in a dry state, as the water evaporates, the volume is reduced, and the original shape and energy can be completely restored. 1. With excellent elasticity, extensibility and water-swelling property, the expansion rate in water can be adjusted between 40% and 250%. The expansion body maintains the elasticity and extensibility of the rubber, and the expansion rate is not affected by the water quality. 2, water resistance, chemical resistance, excellent durability, no harmful substances, no swellable precipitates, no pollution to the environment. 3, in a wide temperature range, can play an excellent waterproof performance, excellent weather resistance. 4, can be made according to user needs, any shape of the sealing tape, seals, and general rubber composite, made of composite waterproof material.
Release date: 2006/9/6 20:44:38