Flame-retardant smoke-suppression non-cured rubber asphalt waterproof coating capable of being constructed at normal temperature

Abstract

The invention provides a flame-retardant smoke-suppression non-cured rubber asphalt waterproof coating capable of being constructed at normal temperature. The flame-retardant smoke-suppression non-cured rubber asphalt waterproof coating is prepared from asphalt, softening oil, an activator, waste rubber powder, a modifier, a liquid flame retardant and a synergist. A preparation process of the waterproof coating comprises the following steps: uniformly mixing and stirring the mixed asphalt and the softening oil, heating to dehydrate, adding the activator, fully stirring to develop, adding the waste rubber powder, continuously adding the modifier to dissolve after complete development, adding the liquid flame retardant and the viscosity-reducing and flame-retarding synergist, cooling, and discharging. A sol method is adopted, the liquid flame retardant is used as a liquid filler to reduce viscosity and soften the rubber modifier, and the liquid flame retardant is also used as a main flame retardant to achieve a flame retardant effect. Asphalt is modified in multiple steps, and S-S bonds / S-C bonds of net-shaped macromolecular chain segments in the waste rubber powder are subjected tooxidative fracture through the desulfurization effect of the activator, so a large number of small molecular chain segments are produced and evenly dispersed in the asphalt in a suspended mode, and astable semi-solid continuous phase system is formed through a gel film. The process can reduce the shearing rate and energy consumption in the production process, so that normal-temperature construction and flame retardance and smoke suppression are realized, the construction energy consumption and environmental pollution are effectively reduced, macromolecular wastes such as waste rubber powder and the like are fully recycled, and the construction of the resource environment-friendly society is facilitated.

Description

Technical field [0001] The invention relates to the technical field of building materials application, in particular to a flame-retardant, smoke-suppressing non-curing rubber asphalt waterproof coating that can be constructed at room temperature. Background technique [0002] In recent years, the composite waterproofing system of non-curing rubber asphalt waterproof coating and modified asphalt waterproof membrane has been successfully applied in various major projects, and the amount of non-curing rubber asphalt waterproof coating has shown a blowout growth. The non-curing rubber asphalt waterproof coating can not be cured for a long time within its service life, and it always maintains a viscous paste. It has the characteristics of creep, strong self-healing ability, and can seal the cracks and pores of the base layer, especially with modified asphalt The waterproof membrane has excellent compatibility. When the two are used in combination, they can give full play to their resp...

AI Technical Summary

Problems solved by technology

[0003] However, with the popularization and application of non-curing rubber asphalt waterproof coatings, its hidden disadvantages have gradually emerged.

First of all, in the production process of the paint, modifiers such as waste rubber powder are added. In order to fully exert its modification effect on asphalt, it needs to rely on high temperature and long-term shearing, which not only consumes high energy, but also under high temperature for a long time Will release a large amount of asphalt fumes and pollute the environment

Secondly, during the construction process, the temperature of heating and removing the barrel is generally 140-200°C, which may easily cause burns and environmental pollution during construction, and may even cause non-curing in the barrel due to uneven heating, resulting in local degradation and aging, performance attenuation, and affecting the overall waterproofing Effect

[0004] In addition, building fire protection is related to people's property and life safety. Waterproof materials are an important part of building maintenance structures. Therefore, the flame retardancy of waterproof materials must also be considered, and the main materials are asphalt-based waterproof membranes and non-cured rubber. Asphalt waterproof coatings are naturally insufficient in flame retardancy. Once burned, they will not only ignite the surrounding environment, but also release a lot of smoke, which will cause great harm to people and the environment. In order to avoid the above hidden dangers, it is very necessary to provide an effective Non-curing rubber asphalt waterproof coating with flame retardant and smoke suppression effect

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