CN115851131A - Environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating and preparation method thereof - Google Patents
Environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating and preparation method thereof Download PDFInfo
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Abstract
The application relates to the technical field of asphalt waterproof coatings, and particularly discloses an environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating and a preparation method thereof. The application discloses an environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating which comprises the following components in parts by weight: 100 parts of asphalt, 3-7 parts of SBS rubber, 10-20 parts of SBR rubber, 35-50 parts of softener, 45-52 parts of filler, 2-4 parts of heat-resistant modifier and 3-7 parts of tackifying resin. The application also discloses a preparation method of the asphalt waterproof coating. By utilizing the formula and the preparation method provided by the application, the asphalt waterproof coating with the construction temperature of 110-130 ℃ can be obtained; meanwhile, the coating has lower viscosity and higher heat resistance; and the extensibility, the stress relaxation property and the low-temperature flexibility of the coating all meet the technical indexes of the coating, so that the coating has excellent construction performance and weather resistance.
Description
Technical Field
The application relates to the technical field of asphalt waterproof coatings, in particular to an environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating and a preparation method thereof.
Background
The non-curing rubber asphalt waterproof coating is a novel waterproof material developed in the last decade and is one of the fastest-developing products in recent years, and the excellent characteristics of the non-curing rubber asphalt waterproof coating increasingly arouse the attention, development and application of the waterproof industry. The environment-friendly low-temperature spraying type hot-melting non-curing rubber asphalt waterproof coating is an elastoplastic colloid consisting of rubber, asphalt and special additives, has good adhesive force, can seal cracks and capillary holes of a base layer, can adapt to complex construction operation surfaces, has strong self-healing capability, is sticky when being touched and difficult to peel, and still has good adhesive property at the temperature of minus 20 ℃.
The hot-melt non-cured rubber asphalt waterproof paint on the market is constructed by a hot-melt method, the viscosity can meet the requirement of spraying or blade coating construction only when the hot-melt non-cured rubber asphalt waterproof paint is heated to 160-180 ℃, a large amount of asphalt smoke is generated at the temperature, a large amount of energy is consumed, meanwhile, certain harm is caused to the environment and constructors, and the problem which hinders the application of the non-cured rubber asphalt waterproof paint is also solved.
Therefore, the development of an environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating and a preparation method thereof are necessary for protecting the environment and the health of construction personnel.
Disclosure of Invention
In order to reduce the construction temperature of the non-cured rubber asphalt waterproof coating and reduce the generation of smoke, and ensure the construction performance and weather resistance of the non-cured rubber asphalt waterproof coating, the application provides the environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating and the preparation method thereof.
In a first aspect, the application provides an environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating, which adopts the following technical scheme:
an environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating comprises the following components in parts by weight: 100 parts of asphalt, 3-7 parts of SBS rubber, 10-20 parts of SBR rubber, 35-50 parts of softener, 45-52 parts of filler, 2-4 parts of heat-resistant modifier and 3-7 parts of tackifying resin.
By utilizing the formula, the environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating prepared by the preparation method is low in construction temperature, and can be subjected to low-temperature spraying or blade coating construction at the temperature of 110-130 ℃. Compared with the construction temperature of 160-180 ℃ of the traditional non-cured rubber asphalt waterproof coating, the construction temperature of the coating provided by the application can be reduced by 30-70 ℃, so that the energy consumption is effectively reduced, the generation of smoke is reduced, the harm to the environment and constructors is reduced, and the green, energy-saving and environment-friendly concept is met.
Meanwhile, by utilizing the formula provided by the application, the environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating with lower viscosity and higher heat resistance can be obtained, and the extensibility, the stress relaxation performance and the low-temperature flexibility of the coating all meet the technical indexes of the coating, so that the coating has the advantages of self-healing puncture resistance and high creep property, the construction performance and the weather resistance of the non-cured rubber asphalt waterproof coating are further ensured, and the application of the asphalt waterproof coating is favorably widened.
The SBS rubber is a styrene-butadiene-styrene block copolymer which is a viscoelastic material, under the condition of keeping a certain tension, the deformation of the rubber changes along with time, after a period of time, the rubber cannot be completely recovered after the tension is removed, and a certain residual deformation is remained, namely the creep characteristic of the rubber. The SBS rubber serving as the thermoplastic elastomer has strong elastic recovery capability, and can provide certain cohesive strength when being added into the non-cured rubber asphalt waterproof coating, so that the performance of the coating is improved. The SBR rubber has the chemical name of styrene butadiene rubber, and compared with SBS rubber, the SBR rubber is small in cohesive strength, good in extensibility, good in cohesiveness, large in cold flow property and good in self-repairing performance, and can endow the coating with excellent creep property. Therefore, the SBS rubber and the SBR rubber are compounded for use and used as the rubber modifier of the environment-friendly low-temperature spraying type hot-melt non-curing rubber asphalt waterproof coating. Secondly, chemical additives such as a softening agent, a heat-resistant modifier, tackifying resin and the like are introduced into the paint, and are matched with a rubber modifier consisting of SBS rubber and SBR rubber, and the materials of the above components have good compatibility and stable structure, so that the paint not only has the conventional performances of durability, non-drying property and good creep property, but also has high heat resistance and low viscosity, can be sprayed or blade-coated at low temperature for construction, is energy-saving and environment-friendly, and meets the special performances of composite waterproofing, anti-sliding and the like of a vertical surface and a coiled material.
Preferably, the environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating comprises the following components in parts by weight: 100 parts of asphalt, 3-5 parts of SBS rubber, 15-20 parts of SBR rubber, 35-40 parts of softener, 45-52 parts of filler, 3-4 parts of heat-resistant modifier and 5-7 parts of tackifying resin.
The addition amount of the rubber modifier in the application can affect the performance index of the coating, so that the addition amounts of SBS rubber and SBR rubber need to be reasonably controlled.
In a specific embodiment, the SBS rubber may be added in an amount of 3 parts, 5 parts, 7 parts.
In some specific embodiments, the SBS rubber may be added in an amount of 3 to 5 parts, 5 to 7 parts.
Test analysis shows that when the addition amount of the SBS rubber is less than 3 parts, the heat resistance of the coating is poor; when the addition amount of the SBS rubber is increased, the heat resistance of the coating can be obviously improved; when the amount of the SBS rubber added is more than 7 parts, the heat resistance of the coating does not change much, but the viscosity value and the stress relaxation value of the coating are too large, so that the performance of the coating is poor. Therefore, the SBS rubber is controlled to be added in the range of 3-7 parts.
In a specific embodiment, the SBR rubber may be added in an amount of 10 parts, 15 parts, 20 parts.
In some specific embodiments, the SBR rubber may be added in an amount of 10 to 15 parts, 15 to 20 parts.
Test analysis shows that when the addition amount of the SBR is less than 10 parts, the extensibility and the heat resistance of the coating are poor; when the amount of the SBR rubber is more than 20 parts, the viscosity and stress relaxation of the coating are too large, resulting in poor coating properties. Therefore, the amount of SBR rubber added is controlled to be in the range of 10 to 20 parts.
The content of each component in the application is set, the asphalt waterproof coating is obtained by long-term test and production practice summary of an inventor, the overall cost of the components is low, and the obtained asphalt waterproof coating has the advantages of low viscosity, high heat resistance, low construction temperature, environmental friendliness, self-healing, puncture resistance and strong creep property.
Preferably, the asphalt is 70# petroleum asphalt and/or 90# petroleum asphalt.
By adopting the technical scheme, the high-quality petroleum asphalt is adopted as a base material, the asphalt has the characteristics of low carbon and environmental protection, and meanwhile, the rubber asphalt waterproof coating prepared from the asphalt has good high-temperature stability and low viscosity.
Preferably, the softener is at least one of alkane oil, dialkyl phthalate, vaseline, microcrystalline wax and polyolefin material.
By adopting the technical scheme, the softening agent can improve the cohesive strength, viscosity, low-temperature flexibility and the like of the non-cured rubber asphalt waterproof coating. The addition of the softener can reduce the construction viscosity of the coating, and the flexibility of the coating can be obviously improved.
In a specific embodiment, the softener may be added in an amount of 35 parts, 40 parts, 50 parts.
In some specific embodiments, the softener may be added in an amount of 35 to 40 parts, 40 to 50 parts.
Test analysis shows that when the addition amount of the softener is less than 35 parts, the viscosity of the coating is too high; when the amount of the softener added is more than 50 parts, the heat resistance of the coating material is drastically reduced. Therefore, in order to obtain a coating material having a low viscosity and a high heat resistance, the amount of the softening agent added is controlled in the range of 35 to 50 parts.
Preferably, the filler is at least one of talcum powder, diatomite and heavy calcium carbonate.
Preferably, the filler is heavy calcium carbonate of 600-800 mesh.
By adopting the technical scheme, the filler can be used as a framework to improve the construction performance.
Preferably, the heat resistant modifier comprises oxidized polyethylene wax and butyl glycidyl ether.
By adopting the technical scheme, the addition of the heat-resistant modifier can ensure that the non-cured rubber asphalt waterproof coating still has proper viscosity during low-temperature construction and simultaneously keeps high heat resistance.
In a specific embodiment, the heat resistant modifier may be added in an amount of 2 parts, 3 parts, 4 parts.
In some specific embodiments, the heat resistance modifier may be added in an amount of 2 to 3 parts, 3 to 4 parts.
Further, the weight ratio of the oxidized polyethylene wax to the butyl glycidyl ether is 3: (0.05-0.15).
Preferably, the tackifying resin is at least one of coumarone resin, terpene resin, rosin resin, carbon five petroleum resin and carbon nine petroleum resin.
By adopting the technical scheme, the tackifying resin can improve the adhesiveness of the coating and the base layer and can reduce the viscosity of the coating during high-temperature construction.
In a specific embodiment, the tackifying resin may be added in an amount of 3 parts, 5 parts, 7 parts.
In some specific embodiments, the tackifying resin may be added in an amount of 3 to 5 parts, 5 to 7 parts.
Test analysis shows that when the addition amount of the tackifying resin is less than 3 parts, the viscosity of the coating is too high; when the amount of the tackifier resin added is more than 7 parts, the low-temperature flexibility of the coating is poor because the glass transition temperature of the tackifier resin is high. Therefore, in order to obtain a coating material having a low viscosity and a good flexibility at low temperatures, the amount of the tackifier resin added is controlled to be in the range of 3 to 7 parts.
In a second aspect, the application provides a preparation method of an environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating, which adopts the following technical scheme:
a preparation method of an environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating comprises the following steps: heating the asphalt according to the proportion to 150 +/-2 ℃, adding the softening agent, the heat-resistant modifier and the tackifying resin into the asphalt at 180 +/-2 ℃ in the stirring process, then adding the SBS resin and the SBR resin, keeping the temperature of 180 +/-2 ℃ and stirring for 1-2h, adding the filler after the SBS resin and the SBR resin are completely melted, and continuing stirring for 30min to obtain the environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating.
The method optimizes the adding sequence, the stirring speed, the modification temperature and the modification time of each raw material through experiments, is accurate to each important node in the preparation process, and is continuously adjusted to obtain the optimal production process. The raw materials selected by the method greatly reduce the temperature of the production process, and the traditional production conditions that the reaction temperature is 180-220 ℃ and the reaction time is 4-6h are improved to the production conditions that the reaction temperature is 150-180 ℃ and the reaction time is less than 3 h. The production process has the advantages that the energy consumption is greatly reduced, meanwhile, the generation of smoke in the production process can be effectively avoided, and the energy conservation and the environmental protection are realized.
In summary, the present application has the following beneficial effects:
1. by utilizing the formula and the preparation method provided by the application, the environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating obtained by the application has the advantages of low construction temperature, low viscosity and high heat resistance: the coating can be constructed at the temperature of 110-130 ℃; the viscosity of the coating at the construction temperature is low; the heat-resistant temperature of the coating reaches over 75 ℃ which is far higher than the heat-resistant temperature of 65 ℃ of the common non-cured rubber asphalt coating, and the slippage phenomenon can not occur during the vertical face construction in summer.
2. The formula, the preparation method and the environment-friendly low-temperature spraying type hot-melting non-cured rubber asphalt waterproof coating product provided by the application have the advantages of environmental friendliness, energy conservation and environmental friendliness: the raw materials do not contain any organic solvent; in the coating heating and construction process, no obvious smoke exists, so that the damage to the environment and constructors is avoided; the coating has low construction temperature and is beneficial to saving energy.
3. The application obtains environmental protection low temperature spraying type hot melt non-curing rubber asphalt waterproof coating has good self-healing puncture resistance: once a certain part of the waterproof layer is punctured and damaged, the waterproof failure area is only limited to the damaged part and cannot be diffused, so that the waterproof layer is easy to repair; meanwhile, the viscoelasticity of the coating can promote partial materials around to gradually migrate to the part, so that the damaged part is filled, and the waterproof function of the coating is recovered.
4. The environment-friendly low-temperature spraying type hot-melt non-curing rubber asphalt waterproof coating obtained by the application has extremely strong creep property: the coating has good adhesion, extensibility, rheological property and low-temperature flexibility, so that the coating can seal the capillary holes and fine cracks of the base layer. When the base layer is cracked and stretched, the coating absorbs stress from the base layer through creep deformation, and the integrity of the waterproof layer of the coating film is maintained. When the waterproof coiled material is used in a compounding way, even if the waterproof coiled material is fully adhered, the excellent basic layer displacement adaptability of the waterproof coiled material in the process of empty laying can be achieved. The hot-melt asphalt coating firmly bonds the waterproof layer of the coiled material with the concrete base layer, and has good creep ability to eliminate or reduce the tensile stress generated by various adverse factors on the waterproof layer of the coiled material, so that the waterproof layer of the coiled material is prevented from being damaged by tension; the coating and the coiled material form a complete waterproof structure layer, so that the influence of adverse factors on a waterproof system can be reduced to the greatest extent, and the reliability and the service life of the waterproof system can be obviously improved.
Drawings
FIG. 1 is a graph of the effect of softener level on coating performance in this application.
FIG. 2 is a graph of the effect of tackifying resin level on coating performance in this application.
FIG. 3 is a graph of the effect of heat resistance modifier usage on coating performance in the present application.
Detailed Description
The present application will be described in further detail with reference to examples.
Specifically, the following are described: unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. The experimental reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the raw materials, instruments, equipment and the like used in the following examples are either commercially available or available by existing methods; the dosage of the experimental reagent is the dosage of the reagent in the conventional experimental operation if no special description exists; the experimental methods are all conventional methods unless otherwise specified.
Examples
Examples 1 to 3
Examples 1 to 3 respectively provide an environment-friendly low-temperature spray type hot-melt non-curable rubberized asphalt waterproofing paint.
The above embodiments differ in that: the amount of SBS rubber added was varied and is shown in Table 1.
An environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating comprises the following components in parts by weight: 100 parts of No. 70 petroleum asphalt, 3 parts, 5 parts and 7 parts of SBS rubber, 10 parts of SBR rubber, 40 parts of dialkyl phthalate softener, 50 parts of 800-mesh heavy calcium filler, 3 parts of heat-resistant modifier and 7 parts of tackifying coumarone resin; wherein the weight ratio of the heat-resistant modifier is 3:0.1 of oxidized polyethylene wax and butyl glycidyl ether.
The embodiment also provides a preparation method of the environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating, which comprises the following steps:
heating the asphalt according to the proportion to 150 +/-2 ℃, starting a stirring mixer, adding a softening agent, a heat-resistant modifier and tackifying resin into the asphalt at 180 +/-2 ℃ in the stirring process, adding SBS resin and SBR resin, keeping the temperature at 180 +/-2 ℃ and stirring for 1.5h, adding a filler after the SBS resin and the SBR resin are completely melted, and continuously stirring for 30min to obtain the environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating.
Comparative example
Comparative example 1
The comparative example provides an environment-friendly low-temperature spray ring-coating hot-melt non-cured rubber asphalt waterproof coating, which is different from the waterproof coating in example 1 in that: the addition amount of SBS rubber is 1 part.
Comparative example 2
The comparative example provides an environment-friendly low-temperature spray ring-coating type hot-melt non-cured rubber asphalt waterproof coating, which is different from the waterproof coating in example 1 in that: the amount of SBS rubber added is 10 parts.
Test examples
Test example 1
The environment-friendly low-temperature spray hot-melt non-curing rubber asphalt waterproof coatings in the examples 1 to 3 and the comparative examples 1 to 2 are used as detection objects, and the performance of the coatings is tested according to a detection method in the building material industry standard JC/T2428-2017 'non-curing rubber asphalt waterproof coating'. Specific results are shown in table 1.
TABLE 1 test results of SBS rubber amount and waterproof coating performance in examples 1-3 and comparative examples 1-2
As can be seen from Table 1, the influence of the amount of SBS rubber on the performance of the coating is examined by changing the addition amount of SBS rubber under the condition of keeping the types and the amounts of other materials unchanged. The addition of the SBS rubber has obvious effect of improving the heat resistance of the coating, and when the addition amount of the SBS rubber is less than 3 parts, the heat resistance of the coating is poor; when the addition amount of the SBS rubber is increased, the heat resistance of the coating can be obviously improved; when the amount of the SBS rubber added is more than 7 parts, the heat resistance of the coating does not change much, but the viscosity value and the stress relaxation value of the coating are too large, so that the performance of the coating is poor. Therefore, the SBS rubber is controlled to be added in the range of 3-7 parts.
Examples 4 to 5
Examples 4 to 5 each provide an environmentally friendly low temperature spray type hot melt non-curable rubber asphalt waterproofing coating material, which is different from example 1 in the amount of SBR rubber added, as shown in Table 2.
Comparative example
Comparative example 3
The comparative example provides an environment-friendly low-temperature spray ring-coating type hot-melt non-cured rubber asphalt waterproof coating, which is different from the waterproof coating in example 1 in that: the addition amount of SBR rubber was 2 parts.
Comparative example 4
The comparative example provides an environment-friendly low-temperature spray ring-coating type hot-melt non-cured rubber asphalt waterproof coating, which is different from the waterproof coating in example 1 in that: the addition amount of SBR rubber is 30 parts.
Test example 2
The environmental-friendly low-temperature spray hot-melt non-curing rubber asphalt waterproof coatings in the examples 4 to 5 and the comparative examples 3 to 4 are used as detection objects, and the performance of the coatings is tested according to a detection method in the building material industry standard JC/T2428-2017 'non-curing rubber asphalt waterproof coating'. Specific results are shown in table 2.
TABLE 2 amount of SBR rubber used in examples 1, 4 to 5 and comparative examples 3 to 4 and results of testing the performance of waterproof coating
As can be seen from Table 2, under the condition of keeping the types and the use amounts of other materials unchanged, when the addition amount of the SBR rubber is less than 10 parts, the extensibility and the heat resistance of the coating are poor; in the process of adding the SBR rubber from 10 parts to 20 parts, the viscosity, the extensibility, the heat resistance and the stress relaxation value of the coating are gradually increased; when the addition amount of the SBR rubber exceeds 20 parts, the viscosity value and the stress relaxation value of the coating are too large, so that the viscosity performance and the stress relaxation performance of the coating are poor. Therefore, the amount of SBR rubber added is controlled within the range of 10 to 20 parts. Further, when the addition amount of the SBR is controlled to be 20 parts, the comprehensive properties of the coating such as viscosity, extensibility and stress relaxation value are optimal.
Examples 6 to 7
Examples 6 to 7 each provide an environmentally friendly low-temperature spray type hot-melt non-curable rubberized asphalt waterproofing paint, which is different from example 5 in the amount of softener added, as specifically shown in table 3.
Comparative example
Comparative example 5
The comparative example provides an environment-friendly low-temperature spray ring-coating hot-melt non-cured rubber asphalt waterproof coating, which is different from the waterproof coating in example 5 in that: the addition amount of the softener was 30 parts.
Comparative example 6
The comparative example provides an environment-friendly low-temperature spray ring-coating hot-melt non-cured rubber asphalt waterproof coating, which is different from the waterproof coating in example 5 in that: the amount of the softener added was 55 parts.
Test example 3
The environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coatings in the examples 6 to 7 and the comparative examples 5 to 6 are used as detection objects, and the performance of the coatings is tested according to a detection method in the building material industry standard JC/T2428-2017 non-cured rubber asphalt waterproof coating.
And (3) detection results: the effect of the softening agent on the coating properties is shown in table 3 and figure 1.
TABLE 3 amount of softener used in examples 5 to 7 and comparative examples 5 to 6 and results of performance test of waterproof coating
As seen from table 3 and fig. 1, when the amount of the softener is less than 35 parts, the viscosity of the paint is too high, while the types and the amounts of other materials are fixed; in the course of increasing the amount of the softening agent from 35 parts to 50 parts, the viscosity of the coating material was decreased and the heat resistance was also sharply decreased. Therefore, the heat resistance of the coating can be improved while the proper construction viscosity is ensured, and the dosage of the softener is controlled to be within the range of 35-50 parts.
Examples 8 to 9
Examples 8 to 9 each provide an environmentally friendly low-temperature spray hot-melt non-curable rubberized asphalt waterproofing paint, which is different from example 5 in the amount of tackifier resin added, as shown in table 4.
Comparative example
Comparative example 7
The comparative example provides an environment-friendly low-temperature spray ring-coating type hot-melt non-cured rubber asphalt waterproof coating, which is different from the example 5 in that: the addition amount of the tackifier resin is 1 part.
Comparative example 8
The comparative example provides an environment-friendly low-temperature spray ring-coating type hot-melt non-cured rubber asphalt waterproof coating, which is different from the example 5 in that: the amount of the tackifier resin added was 10 parts.
Test examples
The environmental-friendly low-temperature spray hot-melt non-curable rubber asphalt waterproof coatings in the examples 8 to 9 and the comparative examples 7 to 8 were used as detection objects, and the performance of the coatings was tested according to the detection method in the building material industry standard JC/T2428-2017 non-curable rubber asphalt waterproof coating.
And (3) detection results: the effect of tackifying resin level on coating performance is shown in table 4 and figure 2.
TABLE 4 test results of the amount of tackifier resin and the performance of waterproof coating in example 5, examples 8 to 9 and comparative examples 7 to 8
As can be seen from Table 4 and FIG. 2, when the amount of the tackifying resin is increased from 3 parts to 7 parts, the viscosity of the coating gradually decreases and the low-temperature flexibility of the coating gradually increases, while the low-temperature performance of the coating is affected due to the high glass transition temperature of the tackifying resin and the excessive amount of the tackifying resin, with the same types and amounts of other materials. Therefore, the addition amount of the tackifier resin is controlled within a range of 3 to 7 parts in order to improve the low-temperature flexibility of the coating while ensuring an appropriate application viscosity.
Examples 10 to 11
Examples 10 to 11 each provide an environmentally friendly low-temperature spray-type hot-melt non-curable rubberized asphalt waterproofing paint, which is different from example 5 in the amount of the heat-resistant modifier added, as shown in table 5.
Comparative example
Comparative example 9
The comparative example provides an environment-friendly low-temperature spray ring-coating type hot-melt non-cured rubber asphalt waterproof coating, which is different from the example 5 in that: the addition amount of the heat-resistant modifier is 1 part.
Comparative example 10
The comparative example provides an environment-friendly low-temperature spray ring-coating hot-melt non-cured rubber asphalt waterproof coating, which is different from the waterproof coating in example 5 in that: the addition amount of the heat-resistant modifier is 5 parts.
Test example 5
The environmental-friendly low-temperature spray hot-melt non-curable rubber asphalt waterproof coatings in examples 10 to 11 and comparative examples 9 to 10 were used as detection objects, and the performance of the coatings was tested according to the detection method in the building material industry standard JC/T2428-2017 'non-curable rubber asphalt waterproof coating'.
And (3) detection results: the effect of the heat resistance modifier level on the coating properties is shown in table 5 and figure 3.
TABLE 5 test results of the amount of the heat-resistant modifier and the performance of the waterproof coating in examples 5, 10 to 11 and comparative examples 9 to 10
In order to save energy, reduce emission and reduce harm to the environment, the application requires that the non-cured rubber asphalt waterproof coating still has proper viscosity in low-temperature (110-130 ℃) construction, but keeps high heat resistance, which are two contradictory performance indexes. As can be seen from Table 5 and FIG. 3, when the heat resistance modifier is increased from 2 parts to 4 parts, the viscosity of the system is not increased much, but the heat resistance index is increased from 85 ℃ to 100 ℃ or more, while the types and amounts of other materials are fixed. Thus, the contradiction between the viscosity and the heat resistance index is solved, the coating still has low viscosity at 130 ℃, the heat resistance index is better while the coating can be sprayed for construction, and the slippage phenomenon can not be generated at high temperature in summer.
Examples 12 to 15
Examples 12 to 15 each provide an environmentally friendly low-temperature spray-on ring-coating type hot-melt non-curing rubberized asphalt waterproofing paint, which is different from example 5 in that: type of heat resistance modifier. Specifically, the results are shown in Table 6.
TABLE 6 types of Heat-resistant modifiers in examples 5, 12 to 15
Example 16
The embodiment provides an environment-friendly low-temperature spray ring coating type hot-melt non-cured rubber asphalt waterproof coating, which is different from the embodiment 5 in that: 4g of oxidized polyethylene wax was used as a heat-resistant modifier.
Test example 6
The environmental-friendly low-temperature spray-type hot-melt non-curable rubber asphalt waterproof coating in the examples 12 to 16 was used as a test object, and the performance of the coating was tested according to the test method in the building material industry standard JC/T2428-2017 "non-curable rubber asphalt waterproof coating". Specific results are shown in table 7.
TABLE 7 test results of the Performance of the waterproof coating materials in examples 5, 12 to 16
As is clear from table 7, according to the results of the tests in comparative example 5 and example 16, the heat resistance of the coating material can be significantly improved by selecting and using oxidized polyethylene wax in combination with butyl glycidyl ether as the heat resistance modifier, as compared to the case of using oxidized polyethylene wax alone as the heat resistance modifier. Further, the weight ratio of the oxidized polyethylene wax to the butyl glycidyl ether is controlled to be 3: (0.05-0.15), the heat resistance of the coating material can be further improved.
Building material industry standard
Table 8 shows the technical indexes required to be met in building material industry standard JC/T2428-2017 'non-cured rubber asphalt waterproof coating'.
TABLE 8 technical index of non-curing rubber asphalt waterproof coating
By combining table 8 and comparing the performance test results of examples 1 to 16, it can be seen that the viscosity of the non-cured rubber asphalt waterproof coating prepared by the present application is lower than 2500 (130 ℃, cps), the heat resistance is higher than 70 ℃, the low temperature flexibility is good, the extensibility is higher than 15mm, and the stress relaxation value is lower than 35%. The paint prepared in the embodiment 5 of the application has the viscosity of only 1000cps at the construction temperature of 120 ℃ after field construction tests; the heat-resistant temperature of the coating reaches 100 ℃ which is far higher than 65 ℃ of the common non-cured rubber asphalt coating, and the slippage phenomenon can not occur during the summer facade construction. The coating provided by the application can be used for industrial and civil building roofs and underground waterproof engineering; grouting and plugging engineering of the deformation joint; meanwhile, the coating can be constructed with coiled materials in a composite mode to form a reliable composite waterproof system.
It will be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present invention, and the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. The environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating is characterized by comprising the following components in parts by weight: 100 parts of asphalt, 3-7 parts of SBS rubber, 10-20 parts of SBR rubber, 35-50 parts of softener, 45-52 parts of filler, 2-4 parts of heat-resistant modifier and 3-7 parts of tackifying resin.
2. The environment-friendly low-temperature spraying type hot-melt non-curable rubber asphalt waterproof coating material as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 100 parts of asphalt, 3-5 parts of SBS rubber, 15-20 parts of SBR rubber, 35-40 parts of softener, 45-52 parts of filler, 3-4 parts of heat-resistant modifier and 5-7 parts of tackifying resin.
3. The environment-friendly low-temperature spray type hot-melt non-curable rubber asphalt waterproof coating material as claimed in claim 1, wherein the asphalt is 70# petroleum asphalt and/or 90# petroleum asphalt.
4. The environment-friendly low-temperature spray hot-melt non-curable rubberized asphalt waterproofing paint according to claim 1, wherein the softener is at least one of alkane oil, dialkyl phthalate, vaseline, microcrystalline wax, and polyolefin material.
5. The environment-friendly low-temperature spray hot-melt non-curable rubberized asphalt waterproofing paint according to claim 1, wherein the filler is at least one of talc, diatomaceous earth, bentonite, sericite powder and heavy calcium carbonate.
6. The environment-friendly low-temperature spray hot-melt non-curable rubber asphalt waterproof coating material as claimed in claim 5, wherein the filler is heavy calcium carbonate of 600-800 meshes.
7. The environmentally friendly low temperature spray hot melt non-curing rubberized asphalt waterproofing coating according to claim 1, wherein the heat resistant modifier comprises oxidized polyethylene wax and butyl glycidyl ether.
8. The environment-friendly low-temperature spray hot-melt non-curable rubberized asphalt waterproofing paint according to claim 7, wherein the weight ratio of the oxidized polyethylene wax to the butyl glycidyl ether is 3: (0.05-0.15).
9. The environment-friendly low-temperature spray hot-melt non-curable rubber asphalt waterproof coating material as claimed in claim 1, wherein the tackifying resin is at least one of coumarone resin, terpene resin, rosin resin, carbo-penta petroleum resin and carbo-nona petroleum resin.
10. The preparation method of the environment-friendly low-temperature spray type hot-melt non-curable rubber asphalt waterproof coating material as claimed in claim 1, which is characterized by comprising the following steps: heating the asphalt according to the proportion to 150 +/-2 ℃, adding the softening agent, the heat-resistant modifier and the tackifying resin into the asphalt at 180 +/-2 ℃ in the stirring process, then adding the SBS resin and the SBR resin, keeping the temperature of 180 +/-2 ℃ and stirring for 1-2h, adding the filler after the SBS resin and the SBR resin are completely melted, and continuing stirring for 30min to obtain the environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating.
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| CN202211688771.5A CN115851131A (en) | 2022-12-28 | 2022-12-28 | Environment-friendly low-temperature spraying type hot-melt non-cured rubber asphalt waterproof coating and preparation method thereof |
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