Anti-aging noctilucent pavement permeable floor tile and preparation method thereof

Abstract

The invention discloses an anti-aging noctilucent pavement permeable floor tile and a preparation method thereof. The floor tile sequentially comprises a noctilucent functional layer, a cementing layer and a cement-based water permeable tile body layer from top to bottom, the noctilucent functional layer is formed by mixing and curing granular solids, light-transmitting powder, a noctilucent material and a polyaspartic acid ester resin A / B system, and the component B contains an anti-settling agent, a wetting agent, an adhesion promoter, a thickening agent, a coalescing agent and isocyanate. The cementing layer and the noctilucent functional layer are in the same system, the thickness and dosage are controlled, preferably, the noctilucent layer is 5-15 mm, and the bottom layer is larger than or equal to 20 mm. The ratio of the noctilucent layer is (70-80): (0-5): (5-15): (6-12), and the mass ratio of the component B is 3: (1-4): (2-3): 1: 2: 50; the process comprises the following steps of: paving within 30 minutes after painting a cementing layer of the same system, and flattening by using a steel roller. According to the structure, the yellowing resistance and the luminescence uniformity are improved while the water permeability and the wear resistance are maintained.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of road paving materials and functional water-permeable floor tiles, in particular to an anti-aging night light road water-permeable floor tile with long afterglow guidance, weather resistance, anti-yellowing and water permeability and a preparation method thereof. BACKGROUND

[0002] Asphalt pavement has a long history. Since it was first applied in Shanghai in the 1920s, it has been nearly a hundred years. With the advancement of urbanization, the functional requirements of urban roads and landscape pavements are no longer limited to bearing and traffic themselves, but also emphasize safety, comfort, aesthetics and environmental protection, etc. to meet the development orientation of "people-oriented". The increase of night traffic activities makes the visibility and guidance of roads under low illumination conditions a management focus. Therefore, night light pavements that can provide passive light guidance in dark environments have gradually attracted attention.

[0003] The existing night light pavement mainly adopts two methods: one is to spread or pave night light (fluorescent) stones on the road surface to form a surface layer; the other is to paint a coating containing night light material on the existing pavement to obtain a light emitting effect. The former has limited mechanical locking and cementing between particles and base due to the limited mechanical locking and cementing between particles and base, and the particles are easy to scatter and fall off under the action of vehicle load and environment. Particle accumulation and pore blockage will lead to a decrease in water permeability, and the path of incident light and emitted light will also be blocked, making the night light performance unstable. The latter can form a continuous light emitting layer in the short term, but the influence of the coating on the original pavement structure layer cannot be avoided, and the site construction is greatly affected by the water content, temperature and humidity conditions and surface cleanliness. Common problems include insufficient adhesion, poor durability and shielding of water permeable pores.

[0004] The comparative technology related to passive light-emitting pavement also includes traditional active light sources such as street lamps and light-emitting road signs. This type of means usually has the following disadvantages: high energy consumption (dependent on electricity or fossil fuels), light pollution risk (interference with the ecological and night sky environment), energy waste due to mismatch between lighting range and demand, high maintenance cost (periodic maintenance and replacement), and glare and reflection at certain incident angles, which reduces actual visibility. In summary, both active and passive solutions have room for improvement in terms of energy consumption, environmental impact, maintenance economy, and structural compatibility with water-permeable pavement systems.

[0005] Based on the above status, there is an urgent need for a night light paving technology that can provide long-term stable night visibility guidance without significantly damaging the original structure and water permeability, and also meets the aesthetic and environmental needs of urban landscape, to make up for the shortcomings of "spreading / paving particles" and "coating type light emitting layer" in anti-scattering, adhesion durability and water permeability retention, and to meet the dual demands of night traffic safety and low-carbon development. SUMMARY

[0006] In order to overcome the problems of the existing luminous pavement, such as particle scattering, insufficient adhesion and weather resistance of the coating, easy blockage of the water permeable pores, and poor uniformity and durability of the luminescence, the present application provides an anti-aging luminous pavement water permeable tile, which adopts a three-layer composite structure of "luminous function layer-cementing layer-cement-based water permeable tile layer", realizes the cooperation of high transparency, ultraviolet resistance and interface stability from the material system, ensures reliable interlayer bonding and non-pore blockage from the structure, thereby significantly improving the night visible guidance and outdoor weather resistance and yellowing resistance while maintaining water permeability and wear resistance, and is suitable for guiding and beautifying urban roads and landscape roads.

[0007] According to one aspect of the present application, an anti-aging luminous pavement water permeable tile is provided, which comprises, from top to bottom, a luminous function layer, a cementing layer and a water permeable tile body layer; wherein:

[0008] The luminous function layer is formed by mixing and curing the A component of the continuous phase of the B component of the polyaspartic acid ester resin and its curing agent, the particle solid, the light-transmitting powder, the luminous material, and the A component of the continuous phase of the B component of the polyaspartic acid ester resin and its curing agent;

[0009] The cementing layer and the luminous function layer adopt the same transparent cementing system composed of polyaspartic acid ester resin and curing agent, and the B component is composed of anti-settling agent, wetting agent, adhesion promoter, thickening agent, film-forming aid and isocyanate, with a mass ratio of 3:(1-4):(2-3):1:2:50;

[0010] The water permeable tile body layer is a cement-based water permeable concrete tile with a thickness of not less than 20 mm; and the thickness of the luminous function layer is 5-15 mm.

[0011] In some technical solutions, the mass ratio of the particle solid: light-transmitting powder: luminous material: polymer resin cementing material in the luminous function layer is (70-80):(0-5):(5-15):(6-12).

[0012] In some technical solutions, the particle solid is light-colored quartzite or pebble with a size of 2.36-9.5 mm, and ≤30wt% of dark stone can be mixed.

[0013] In some technical solutions, the light-transmitting powder is a complex of transparent glass powder or quartz sand and talc powder, with a mass ratio of (0-50):(50-100); the particle size of the transparent glass powder or quartz sand is 0.5-1 mm, and the particle size of the talc powder is 800-1000 mesh.

[0014] In some technical solutions, the luminous material is a strontium aluminate-based long-afterglow energy storage type luminous powder with a particle size of 5-45 μm and a density of 3.4-3.6 g / cm3, and the luminescence peak is 520 nm±5 nm.

[0015] In some technical solutions, the B component comprises:

[0016] The anti-settling agent is selected from one or more of a silica anti-settling agent, a silicone rubber anti-settling agent, and a sodium polyacrylate anti-settling agent;

[0017] The wetting agent is selected from a silicone wetting agent and / or a fatty alcohol wetting agent;

[0018] The adhesion promoter is selected from a silane adhesion promoter and / or a phenolic adhesion promoter;

[0019] The thickening agent is selected from a plant glue, a synthetic thickening agent, a natural colloid, or a mineral thickening agent;

[0020] The film-forming aid is one or more of a polymer, a phosphate, and an alcohol ether film-forming agent;

[0021] The isocyanate is selected from one or more of methyl isocyanate, dimethyl isocyanate, dimethyl benzene diisocyanate, or diphenyl methane diisocyanate.

[0022] In some technical solutions, the initial setting time of the cementing layer is not less than 30 minutes.

[0023] In some technical solutions, the cementing layer is uniformly coated on the surface of the water-permeable brick layer, and the coating amount is 0.05 g / cm 2 ~ 0.3 g / cm 2 .

[0024] According to another aspect of the present application, a method for preparing the floor tile is further provided, comprising the following steps:

[0025] A water-permeable brick layer is prepared, and a transparent cementing layer composed of polyaspartic acid ester resin and a curing agent is brushed on the surface of the water-permeable brick layer;

[0026] The granular solid and the light-transmitting powder are mixed, the luminescent material and the A component are uniformly mixed, the B component is added, and the luminescent functional layer mixture is formed; the luminescent functional layer mixture is filled on the cementing layer and is flattened by a steel roller, and is cured and formed.

[0027] In some technical solutions, the following mixing and paving conditions are included:

[0028] The premixing time of the granular solid and the light-transmitting powder is 30 seconds to 3 minutes, and the stirring time after the luminescent material and the A component are added is 2 minutes to 5 minutes;

[0029] The anti-settling agent, the wetting agent, the adhesion promoter, and the isocyanate are mixed, and the thickening agent and the film-forming aid are added after being dispersed at a rotation speed of 500 r / min to 800 r / min for 15 minutes to 20 minutes to obtain the B component;

[0030] The coating amount of the cementing layer is 0.05g / cm2-0.3g / cm2;

[0031] The paving and flattening of the noctilucent functional layer are completed within 30 minutes after the preparation is completed.

[0032] The above technical scheme has at least the following beneficial effects:

[0033] Firstly, the same polyaspartic acid ester transparent cementing system is used for the noctilucent functional layer and the cementing layer, the mismatch of heterogeneous resins in modulus, polarity and thermal expansion coefficient is eliminated from the material system level, the interface stress concentration is significantly reduced, the interlayer peeling risk under long-term exposure-humid heat-temperature difference cycle is reduced, the adhesion durability is improved, and it is suitable for outdoor road service environment.

[0034] Secondly, the ratio of the anti-settling agent, the wetting agent, the adhesion promoter, the thickening agent, the film-forming aid and the isocyanate in the B component is 3:(1-4):(2-3):1:2:50, the noctilucent powder and the light-transmitting powder can be fully wetted and uniformly dispersed within the mixing period, and the settlement and segregation in the layer thickness direction are inhibited; the thickening-film-forming synergy considers the construction thixotropy and the film-forming density, reduces the scattering points caused by pinholes and bubbles, and thus stabilizes the surface layer light transmittance and the light emission uniformity.

[0035] Thirdly, the ternary system of the particle solid, the light-transmitting powder and the noctilucent material is used for the noctilucent functional layer, the mass ratio is (70-80):(0-5):(5-15):(6-12), and the particle size window is (transparent glass powder or quartz sand 0.5-1mm, talc powder 800-1000 mesh, noctilucent powder 5-45μm), the matching of the mass ratio and the particle size window shortens the effective light path of the incident light and the residual light, controls the Mie scattering, ensures the brightness and suppresses the "bright spot-dark spot" phenomenon, and improves the naked eye recognition distance and comfort.

[0036] Fourthly, the thickness of the noctilucent functional layer is 5-15mm, which can ensure the optical transmittance and light storage and release capacity, and construct sufficient skeleton bearing and wear-resistant layer thickness; the cooperation of the thickness and the formula reduces the influence of early wear on the overall light emission effect, and prolongs the service life.

[0037] Fifthly, the water-permeable brick layer is cement-based water-permeable concrete and the thickness is not less than 20mm, which ensures the overall rigidity and bearing stability of the paving structure; the reasonable amount of the cementing layer is 0.05g / cm2-0.3g / cm2 and the initial setting time is greater than or equal to 30 minutes, the resin penetration depth is controlled, the bottom layer pores are not blocked, the long-term water permeability coefficient is good, which is beneficial to rainwater drainage and road surface drying.

[0038] Sixth, the polyaspartic ester-isocyanate curing system has excellent anti-ultraviolet and hydrolysis resistance, and combined with a formulation aid package, it can reduce yellowing and loss of transparency rate, and the appearance stability is better under long-term exposure or humid heat environment; this directly corresponds to the long-term maintenance of the night light retention rate and the appearance color.

[0039] Seventh, the repair convenience is high. Since the surface layer and the cementing layer are the same system, local damage can be repaired in place with the same ratio of materials, the chemical compatibility and interface continuity are excellent, the optical and mechanical properties of the repair area are more easily matched with the original surface layer, reducing the probability of full piece rework and maintenance cost.

[0040] Eighth, the application scenarios are wide. The structure and process can be used for urban sidewalks, slow traffic systems, square and park walkways, steps and boundary lines, emergency evacuation guide belts, etc., and has good adaptability and implementability for new pavement and old road reconstruction. DETAILED DESCRIPTION

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below. Obviously, the following description is only some embodiments of the present application, and for those skilled in the art, without creative labor, other implementation processes can be obtained by step deletion and replacement.

[0042] It should be further understood that the term "and / or" used in the specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0043] Embodiment 1

[0044] The embodiment provides a preparation method of an anti-aging night light pavement water permeable tile, comprising the following steps:

[0045] S1, first, the size of the water permeable tile should be selected, and the corresponding model should be customized.

[0046] Further preferably, the size of the water permeable tile should not be greater than 600mm*600mm, nor less than 100mm*100mm, and the thickness should not be less than 30mm. Special shapes can also be customized.

[0047] S2, fill in the cement-based water permeable concrete, and the surface should be reserved with a thickness of 5mm to 15mm, and then wait for solidification.

[0048] S3, use a roller mixer to prepare a night light functional layer mixture:

[0049] The solid particles and the light-transmitting powder are mixed by a drum-type stirrer for 1 minute, the long-afterglow energy-storing luminescent powder and the polyaspartic acid ester resin (A component) are added, and then mixed for 3 minutes.

[0050] Further preferably, the solid particles of the present embodiment are white quartz stone having a particle size of 2.36 mm to 4.75 mm (square-hole sieve), and the light-transmitting powder is a mixture of 50% transparent glass powder and 50% talc powder.

[0051] Further preferably, the polyaspartic acid ester resin has high transparency, excellent ultraviolet resistance (no yellowing and brittleness), and water resistance, and is suitable for use in road surface environments.

[0052] S4, In the present embodiment, the mass ratio of the anti-settling agent, the wetting agent, the adhesion promoter, the thickening agent, the film-forming aid, and the isocyanate in the raw material of the curing agent continuous phase (B component) of the polymeric resin cementing material is 3:3:2:1:2:50. The anti-settling agent, the wetting agent, and the adhesion promoter are mixed with the isocyanate and sufficiently dispersed at a stirring rate of 500 r / min to 800 r / min for 15 minutes to 20 minutes, after which the thickening agent and the film-forming aid are slowly added and mixed uniformly, to obtain the curing agent continuous phase (B component).

[0053] Further preferably, the anti-settling agent includes any one or a combination of two or more of a silica anti-settling agent, a silicone rubber anti-settling agent, and a sodium polyacrylate anti-settling agent, and is not limited thereto.

[0054] Further preferably, the wetting agent includes a silicone wetting agent, a fatty alcohol wetting agent, and the like, and is not limited thereto.

[0055] Further preferably, the silicone wetting agent includes any one or a combination of two or more of a silicone oil, a polysiloxane wetting agent, a silane coupling agent, a diatom mud wetting agent, and an organosilicon-modified polymer wetting agent, and is not limited thereto.

[0056] Further preferably, the fatty alcohol wetting agent includes any one or a combination of two or more of octanol, dodecanol, hexadecanol, and octadecanol, and is not limited thereto.

[0057] Further preferably, the adhesion promoter includes a silane-based adhesion promoter and a phenolic adhesion promoter, and is not limited thereto.

[0058] Further preferably, the silane-based adhesion promoter includes any one or a combination of two or more of γ-aminopropyltrimethoxysilane, γ-methoxypropyltrimethoxysilane, γ-methacryloxytrimethoxysilane, γ-methacryloxytriethoxysilane, and γ-dimethoxysilane, and is not limited thereto.

[0059] Further preferably, the phenolic adhesion promoter includes any one or a combination of p-cresol formaldehyde resin, phenolic resin prepolymer, phenolic modified polymer, phenolic silane compound, and is not limited thereto.

[0060] Further preferably, the thickening agent includes vegetable gum (gelatin, agar, pectin, carrageenan), synthetic thickening agent (carboxymethyl cellulose, methyl cellulose, polyacrylate), natural colloid (xanthan gum, collagen), mineral thickening agent (bentonite), and is not limited thereto.

[0061] Further preferably, the film forming aid includes polymer film forming agent, phosphate film forming agent, alcohol ether film forming agent, and is not limited thereto.

[0062] Further preferably, the polymer film forming agent includes any one or a combination of polyurethane film forming agent, acrylate polymer film forming agent, polyamide film forming agent, epoxy resin film forming agent, phenolic resin film forming agent, polyvinyl alcohol film forming agent, and is not limited thereto.

[0063] Further preferably, the phosphate film forming agent includes any one or a combination of aluminum phosphate film forming agent, zinc phosphate film forming agent, iron phosphate film forming agent, titanium phosphate film forming agent, zirconium phosphate film forming agent, and is not limited thereto.

[0064] Further preferably, the alcohol ether film forming agent includes any one or a combination of epoxy alcohol ether film forming agent, polyether film forming agent, polypropylene glycol ether film forming agent, propylene glycol ether film forming agent, ethylene glycol ether film forming agent, and is not limited thereto.

[0065] Further preferably, the isocyanate includes any one or a combination of methyl isocyanate, dimethyl isocyanate, dimethyl benzene diisocyanate, diphenyl methane diisocyanate, and is not limited thereto.

[0066] S5, a cement layer material is prepared, including polyaspartic ester resin (or epoxy resin) and its curing agent, and a diluent.

[0067] Further preferably, using the same polyaspartic ester resin and curing agent material as the noctilucent functional layer can reduce secondary preparation.

[0068] Further preferably, using epoxy resin material and its curing agent can have lower material cost than polyaspartic ester resin.

[0069] Further preferably, a suitable curing agent and diluent should be selected, and the initial setting time should not be less than 30 min and not more than 3 h.

[0070] S6, the mixed curing agent continuous phase (component B) of S4 is added to the mixture of S3, and a drum-type stirrer is stirred for 3 min to 5 min.

[0071] Further preferably, the material ratio of the polyaspartic ester resin (or epoxy resin) and its curing agent, diluent is generally (40-80):(30-50):(0-20), and the specific ratio is determined by the resin material and the curing agent and diluent material.

[0072] S7, apply the cementing layer material configured in S5 on the cement pervious brick in S2, and evenly apply.

[0073] Further preferably, the amount of the cementing layer material is about 0.1 g / cm 2 , and the uniform coating effect is used as the criterion.

[0074] S8, fill the mixed night light functional layer mixture in S6 into the model within 30 min, roll it flat with a steel roller, demold after solidification, trim the burrs, and then use.

[0075] Further preferably, since the one-time mixing amount of the night light functional layer is large, it is appropriate to prepare multiple tiles at the same time.

[0076] Comparative Example 1

[0077] In this comparative example, transparent epoxy resin is used instead of the polyaspartic ester resin used in S3 and S5 of Example 1, and the rest is basically the same as Example 1.

[0078] Comparative Example 2

[0079] In this comparative example, no cementing layer material is prepared or applied, and the mixed night light functional layer mixture in S6 is directly filled into the model in S2, and the rest is basically the same as Example 1.

[0080] Comparative Example 3

[0081] In this comparative example, no solid particles are added when preparing the night light functional layer mixture in S3, only light-transmitting powder is added, and the rest is basically the same as Example 1.

[0082] Comparative Example 4

[0083] In this comparative example, no light-transmitting powder is added when preparing the night light functional layer mixture in S3, and the rest is basically the same as Example 1.

[0084] Comparative Example 5

[0085] This comparative example is the cement-based pervious concrete prepared in S2, without night light effect.

[0086] The pervious tiles prepared in the above Example 1 and Comparative Examples 1-5 are stored for 24 hours, and performance tests are compared, and the results are shown in the following table.

[0087]

[0088]

[0089] The above-described embodiments only express several implementation manners of the present application, which are described in a more specific and detailed manner, but cannot be understood as a limitation on the patent scope of the present application. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. An aging-resistant, luminous, permeable paving brick, characterized in that, From top to bottom, it includes a luminescent functional layer, a bonding layer, and a permeable brick layer; among which: The luminescent functional layer is formed by mixing and curing the A component of particulate solids, light-transmitting powder, luminescent material, and the B component of the continuous phase of polyaspartic acid ester resin with its curing agent. The adhesive layer and the luminescent functional layer adopt the same transparent adhesive system composed of polyaspartic acid ester resin and curing agent. The B component is composed of anti-settling agent, wetting agent, adhesion promoter, thickener, film-forming aid and isocyanate, with a mass ratio of 3:(1~4):(2~3):1:2:

50. The permeable brick body layer is a cement-based permeable concrete brick with a thickness of not less than 20mm; and the thickness of the luminous functional layer is 5mm to 15mm.

2. The floor tile according to claim 1, characterized in that, The mass ratio of particulate solid, light-transmitting powder, luminescent material, and polymer resin binder in the luminescent functional layer is (70-80):(0-5):(5-15):(6-12).

3. The floor tile according to claim 1 or 2, characterized in that, The granular solids are light-colored quartz or pebbles with a diameter of 2.36 mm to 9.5 mm, and may be mixed with ≤30 wt% dark-colored stone.

4. The floor tile according to claim 1 or 2, characterized in that, The light-transmitting powder is a mixture of transparent glass powder or quartz sand and talc powder, with a mass ratio of (0-50):(50-100); the particle size of the transparent glass powder or quartz sand is 0.5mm-1mm, and the particle size of the talc powder is 800-1000 mesh.

5. The floor tile according to claim 1 or 2, characterized in that, The luminescent material is a strontium aluminate-based long afterglow energy storage luminescent powder with a particle size of 5μm to 45μm, a density of 3.4 to 3.6 g / cm3, and a luminescence peak of 520nm ± 5nm.

6. The floor tile according to claim 1, characterized in that, In component B: The anti-settling agent is selected from one or more of silica anti-settling agents, silicone rubber anti-settling agents, and sodium polyacrylate anti-settling agents; The wetting agent is selected from organosilicon wetting agents and / or fatty alcohol wetting agents; The adhesion promoter is selected from silane-based adhesion promoters and / or phenolic adhesion promoters; Thickeners are selected from plant gums, synthetic thickeners, natural colloids, or mineral thickeners; The film-forming aid is one or more of polymeric, phosphate, and alcohol ether film-forming agents; The isocyanate is selected from one or more of methyl isocyanate, dimethyl isocyanate, dimethylphenyl diisocyanate or diphenylmethane diisocyanate.

7. The floor tile according to claim 1, characterized in that, The initial setting time of the cementitious layer shall not be less than 30 minutes.

8. The floor tile according to claim 1, characterized in that, The adhesive layer is uniformly coated on the surface of the permeable brick body, with a coating amount of 0.05 g / cm³. 2 ~0.3g / cm 2 .

9. A method for preparing floor tiles as described in any one of claims 1 to 8, characterized in that, Includes the following steps: A prefabricated permeable brick layer is coated on its surface with a transparent adhesive layer composed of polyaspartic acid ester resin and curing agent, which is the same as the luminous functional layer. After mixing the granular solid with the light-transmitting powder, add the luminescent material and component A and mix well. Then add component B and mix to form a luminescent functional layer mixture. Fill the luminescent functional layer mixture into the cementing layer and roll it flat with a steel roller to cure and shape it.

10. The preparation method according to claim 9, characterized in that, Includes the following mixing and paving conditions: The premixing time of the granular solid and the light-transmitting powder is 30s to 3min, and the stirring time after adding the luminescent material and component A is 2min to 5min; Anti-settling agent, wetting agent, adhesion promoter and isocyanate are mixed and dispersed at 500 r / min to 800 r / min for 15 min to 20 min, thickener and film-forming aid are added to obtain component B; The coating amount of the adhesive layer is 0.05 g / cm³. 2 ~0.3g / cm 2 ; The installation and leveling of the luminescent functional layer were completed within 30 minutes after preparation.

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