A non-curing rubber asphalt waterproof coating that can be applied at room temperature to prevent flames and suppress smoke

A technology of asphalt waterproof coating and non-curing rubber, applied in asphalt coatings, other rubber coatings, fireproof coatings, etc., can solve the problems of asphalt smoke environmental pollution, gradual emergence of invisible drawbacks, degradation and aging, etc., and reduce construction energy consumption. and environmental pollution, reducing shear rate and energy consumption, and reducing the effect of mixing viscosity

Active Publication Date: 2021-09-24
山东雨中情防水材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A non-curing rubber asphalt waterproof coating that can be applied at room temperature to prevent flames and suppress smoke
  • A non-curing rubber asphalt waterproof coating that can be applied at room temperature to prevent flames and suppress smoke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Pour 30 parts of 70# asphalt, 10 parts of 200# asphalt and 15 parts of rubber filling oil into the development tank, heat up to 140-160°C while stirring, add 0.1 part of 560 activator, control the speed at 300 rpm, and stir 40min for development. Then add 12 parts of 40 mesh waste rubber powder and continue to stir for 60 minutes. After the waste rubber powder is completely developed, add 8 parts of oil-extended styrene-butadiene rubber modifier and stir for 50 minutes. After it is completely dissolved, continue to add 0.2 parts of BL asphalt modification After dispersing and stirring for 30 minutes, add 16 parts of tricresyl phosphate and 3 parts of zinc borate, disperse and stir for 40 minutes, then cool down and discharge the material, and then the flame-retardant and smoke-suppressing non-curing rubber asphalt waterproof coating can be constructed at room temperature.

Embodiment 2

[0025] Pour 30 parts of 90# asphalt, 10 parts of 200# asphalt and 15 parts of aromatic oil into the development tank, heat up to 140-160°C while stirring, add 0.15 parts of 420 rubber desulfurizer, control the speed at 300 rpm, and stir Develop for 50min. Then add 13 parts of 40 mesh waste rubber powder and continue to stir for 50 minutes. After the waste rubber powder is completely developed, add 10 parts of butadiene rubber modifier and stir for 40 minutes. After it is completely dissolved, continue to add 0.2 parts of 8903 asphalt modifier and disperse After stirring for 20 minutes, add 16 parts of resorcinol bis(diphenyl phosphate) and 3 parts of zinc aluminate, disperse and stir for 40 minutes, then cool down and discharge the material, and then the non-cured rubber asphalt waterproof can be constructed at room temperature. coating.

Embodiment 3

[0027] Pour 40 parts of 70# bitumen and 20 parts of naphthenic oil into the development tank, heat up to 140-160°C while stirring, add 0.2 parts of 560 activator, control the speed at 300 rpm, and stir for 50 minutes. Then add 14 parts of 40 mesh waste rubber powder and continue to stir for 50 minutes. After the waste rubber powder is fully developed, add 12 parts of oil-extended styrene-butadiene rubber modifier and stir for 40 minutes. After it is completely dissolved, continue to add 0.2 parts of Sasobit asphalt modification After dispersing and stirring for 30 minutes, add 14 parts of tricresyl phosphate and 5 parts of molybdenum oxide, disperse and stir for 40 minutes, then cool down and discharge the material, and then the non-curing rubber asphalt waterproof coating that can be applied at room temperature is flame-retardant and smoke-suppressing.

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PUM

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Abstract

The invention provides a non-curing rubber asphalt waterproof coating capable of flame retardancy and smoke suppression that can be applied at normal temperature. The raw materials include asphalt, softening oil, activator, waste rubber powder, modifier, liquid flame retardant and synergist. The preparation process is as follows: Mix and stir the mixed asphalt and softened oil evenly, heat up and dehydrate, add an activator, stir and develop fully, add waste rubber powder, after the development is complete, continue to add modifiers to dissolve, add liquid flame retardants to reduce viscosity And flame retardant synergist, discharge after cooling down. The present invention adopts the sol method, uses the liquid flame retardant as the liquid filler to reduce the viscosity and soften the rubber modifier, and also acts as the main flame retardant to achieve the flame retardant effect. The asphalt is also modified in multiple steps. Through the desulfurization of the activator, the S-S bond / S-C bond of the network macromolecular segment in the waste rubber powder is oxidized and broken, and a large number of small molecular segments are produced. The suspension is dispersed in asphalt and forms a stable semi-solid continuous phase system through a gel film. This process can reduce the shear rate and energy consumption in the production process, so as to realize normal temperature construction, flame retardancy and smoke suppression, effectively reduce construction energy consumption and environmental pollution, and fully recycle and reuse "polymer waste" such as waste rubber powder. Conducive to building a resource-friendly society.

Description

technical field [0001] The invention relates to the technical field of application of building materials, in particular to a non-curing rubber asphalt waterproof coating which can be applied at normal temperature to prevent fire and suppress smoke. Background technique [0002] In recent years, the composite waterproof system of non-curing rubber asphalt waterproof coating and modified bitumen waterproof membrane has been successfully applied in a large number of major projects, and the consumption of non-curing rubber asphalt waterproof coating has shown a blowout growth. Non-curing rubber asphalt waterproof coating can not be cured for a long time within its service life, and always maintains a viscous paste. It has creep properties, strong self-healing ability, and can seal base cracks and capillary pores. The waterproof membrane has excellent compatibility. When the two are used in combination, they can give full play to their respective advantages. The overall closed wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D195/00C09D119/00C09D5/18
CPCC08K2003/2255C08K2003/387C08L2201/02C08L2205/025C08L2205/035C08L2207/24C09D5/18C09D195/00C08L95/00C08L91/00C08L19/003C08L9/06C08K5/523C08K3/38C08L9/02C08K3/24C08K3/22
Inventor 李晴龙李宏伟田益
Owner 山东雨中情防水材料有限公司
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