JP2005042541A - No-solvent type luster paving material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it possible that a floor coating material with non-slip floor surface effect prevents the film surface when a floor is coated with this material becoming a dry and matted state and impressing us that the floor is a superficial and flat touch design, without the need to apply any finishing clear top coat. <P>SOLUTION: This no-solvent type luster paving material contains (a) a no-solvent type transparent resin, (b) transparent aggregates of which all-optic transmission coefficient when mixed with this resin is higher than a specific value and (c) colored aggregates, and the composition of the material is such that both the total weight of (b) and (c) and the weight ratio of the colored aggregates to the transparent aggregates are regulated within their respective specified ranges in relation with the weight of the transparent resin. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a glossy pavement material excellent in design and weather resistance on a road surface and a floor surface, and in particular, in its construction, environmental destruction is hardly caused and construction workability is also excellent.

  Conventionally, methods have been used to improve the aesthetics by imparting colors and patterns to tasteless and dry road surfaces such as concrete and asphalt. As materials used for this purpose, various floor surface coating compositions such as polyurethane, epoxy resin, unsaturated polyester, and methyl methacrylate oligomer are generally used. These have characteristics according to the characteristics of each resin. When installing on the road surface, usually these resins are blended with pigments and colored aggregates as coloring materials, and inorganic as fillers. -In many cases, it was used as a paving material with organic powders and a coating film thickness increased. The purpose of the coloring material is to form a pattern on the coating film and improve the design, and the filler is used to increase the hardness of the coating film, improve the wear resistance, and improve the adhesion strength of the coating film. Its purpose is to increase and prevent swelling.

  Also, on the road surface, wetting of the road surface due to rain and oil stains may adhere, and if the surface of the pavement material is very smooth and has low frictional resistance, a slip accident may occur. It is also practiced to mix an appropriately sized aggregate as a material or filling material, to form irregularities on the surface of the coating film, and to provide an anti-slip effect on the floor surface.

  As described above, an appropriate aggregate is mixed in the pavement as described above. However, if the aggregate / resin ratio of the pavement is low, the aggregate on the surface of the pavement is resin. Therefore, the ratio of the resin to the aggregate is relatively small. Moreover, when increasing resin, when a pavement material is not dried, an aggregate may be spread | dispersed on the surface and an unevenness | corrugation may be formed.

  As a result, the coating floor material containing a large amount of such fillers generally loses gloss due to fine irregularities on the surface of the coating film, and is in a matte state with a dry feeling. There was no depth and it was a flat impression.

  In order to eliminate such a matte feeling, there is a method of simply increasing the amount of resin or laminating a glossy transparent coating as an overcoat, but if the amount of resin is simply increased, Since the ratio of the aggregate of the resin is relatively reduced, there is a part where the aggregate is settled due to gravity in the resin, especially on the floor surface, and on the surface of the coating film, there is a part where a lot of resin is present, resulting in uneven gloss. Become. On the other hand, when a glossy transparent coating film is laminated, the construction process is increased by one, which goes against the recent trend of shortening the construction period.

  In addition, when increasing the amount of resin or laminating a glossy transparent coating film, there will be a very large amount of resin on the coating surface, making it easier to slip in the presence of water or oil, When the abrasion resistance is poor, it is difficult to maintain the gloss for a long time.

  Therefore, the problem to be solved by the present invention is to improve the flat impression of such a matte and dry feeling, and to form a floor surface with a deep impression of wet color like a stone pavement after rain. It is to obtain a non-slip type pavement material with a simple construction process.

  In order to solve such a problem, the present inventor defines an aggregate amount with respect to a resin to be used, and a transparent aggregate and a colored aggregate having a total light transmittance of 70% or more when mixed with the resin. As a result, the present invention has been found to be a paving material that prevents sedimentation of aggregates contained therein, has no gloss unevenness, and forms a deep, moist wet paint film.

That is,
1. (A) a solventless transparent resin having a viscosity of 0.1 to 10.0 Pa · s, (b) a transparent aggregate having a total light transmittance of 70% or more when mixed with the resin, (c) ) Containing a colored aggregate, and the weight ratio of the colored aggregate to the transparent aggregate is 1 with a ratio of 200 to 600 parts by weight of (b) and (c) with respect to 100 parts by weight of the resin. : 0.5 to 2.5 Solventless glossy paving material.
Total light transmittance: In accordance with measurement method A using an integrating sphere type light transmittance measuring device specified in JISK 7105 “Testing methods for optical properties of plastics” 5.5 “Light transmittance and total light reflectance” The sample was filled into a 5 mm thick glass cell, and the total light transmittance was measured.
2. The transparent aggregate and the colored aggregate have particle diameters of 0.1 to 5.0 mm, respectively. Solvent-free glossy paving material as described in 1.

  In the present invention, since the non-slip effect is imparted, in the coating floor material containing a large amount of filler, gloss is generally lost due to fine irregularities on the surface of the coating film, resulting in a matte state that feels dry. In addition, the design has a deep and flat impression, and the light transmittance when solvent-free transparent resin and transparent aggregate are mixed is adjusted to a specific range, and transparent aggregate and colored aggregate By defining the ratio and the total amount of the aggregate with respect to the solventless transparent resin, the transparent resin and the transparent aggregate are integrated in the pavement coating film so that they cannot be distinguished from each other. As a result, since the transparent resin and the transparent aggregate transmit light and reflect light, the gloss of both of them is a resin part as a whole, and is usually provided to give such gloss. The effect of shortening the process of omitting the clear top coat is obtained.

  Hereinafter, the present invention will be described in detail based on the embodiments.

  The solventless transparent resin in the present invention is characterized in that the resin itself has fluidity and is transparent. The term “transparent” means that it is not concealed, as long as the hue of the colored aggregate can be recognized even if the resin covers the colored aggregate to be mixed. The viscosity of the resin is about 0.1 to 10.0 Pa · s in consideration of easy mixing of the transparent aggregate and the colored aggregate and construction workability. When it is lower than 0.1 Pa · s, the fluidity is high and it is difficult to attach the thickness. On the other hand, if it is higher than 10.0 Pa · s, it is difficult to form a smooth surface during glazing.

Examples of such a solventless transparent resin include urethane, epoxy, unsaturated polyester, and methyl methacrylate oligomers.

For example, as a polyurethane system, a polyisocyanate compound such as tolylene diisocyanate as a curing agent, a two-part type using a polyol such as polyether polyol as a main agent, or a polyisocyanate compound such as tolylene diisocyanate is prepolymerized. There is a one-component moisture-curing form.

Moreover, as an epoxy resin type | system | group, there exists a two-pack type epoxy resin binder which consists of the main ingredient part which has a bisphenol A type or bisphenol F type epoxy resin as a main component, and the hardening | curing agent part which has a polyamine type compound as a main component.

Furthermore, there is an epoxy-modified polyol resin obtained by modifying a polyol with an epoxy compound containing a plurality of epoxy groups. This improves the problem of yellowing in the epoxy resin while having the toughness of the epoxy resin, and also has the flexibility of the polyurethane resin.

Next, as the unsaturated polyester system, an unsaturated polyester resin mainly composed of a resin in which an unsaturated polyester produced by reacting a polybasic acid and a polyhydric alcohol is dissolved in a monomer to be polymerized therewith is used as a main component. And a binder comprising a combination of a curing agent mainly composed of peroxide and an accelerator mainly composed of a metal catalyst.
Particularly in unsaturated polyester paving materials, the curing mechanism is due to the formation of radicals by redox and the initiation of polymerization, so the presence of oxygen in the atmosphere that inhibits radical generation causes curing failure. Therefore, paraffin wax is further mixed to provide a shielding agent that avoids contact between the coating film immediately after coating and the atmosphere.

Next, the methyl methacrylate oligomer system is similar to the unsaturated polyester in terms of curing mechanism, but is very reactive and is cured using only a peroxide as a curing agent (without using a metal catalyst). Further, since the curing mechanism is the same, paraffin wax is similarly mixed to avoid contact between the coating film immediately after painting and the atmosphere.

  Next, examples of the transparent aggregate used in the present invention include inorganic materials such as glass beads, pulverized glass, fused silica, and cryolite, and organic materials such as styrene resin beads and acrylic resin beads, but are not limited thereto. The transparent aggregate that satisfies the conditions described below may be used.

  The transparent aggregate needs to have a total light transmittance of 70% or more when mixed with a solventless transparent resin used as a paving material. When the total light transmittance of the transparent aggregate is within this range, the transparent resin and the transparent aggregate appear to be integrated in the pavement coating film, thereby adding depth to the coating film. Further, since the transparent resin and the transparent aggregate transmit light and reflect light, the gloss as if both of them are resin portions as a whole is generated. If the difference in total light transmittance when the transparent aggregate is mixed with a solventless transparent resin is lower than 70%, the transparent aggregate is recognized separately from the transparent resin, and the gloss of the transparent resin as a whole is increased. In addition to being lost, the light transmittance is deteriorated, resulting in a flat design with no depth.

  The total light transmittance is measured as described above. More specifically, a glass cell having a thickness of 5 mm is filled with a mixture of a transparent aggregate and a solventless transparent resin. This was measured using an integrating sphere type light transmittance measuring device in a state where a sound wave was applied to remove bubbles in the cell, the transparent aggregate was closest packed, and the gap was filled with resin. As such a measuring device, for example, an integrating sphere attachment device (“ISR-240A type” manufactured by Shimadzu Corporation) can be attached to the main body of “Spectrophotometer UV-2200” manufactured by Shimadzu Corporation.

  In addition, the particle size of the transparent aggregate is not particularly limited. However, in order to sufficiently exhibit the non-slip effect and high gloss in the present invention, it is desirable to keep the particle size within a range of 0.1 to 5.0 mm. When the particle diameter is smaller than 0.1 mm, the non-slip effect is lowered, and the specific surface area of the entire aggregate is relatively increased. As a result, the amount of the solvent-free transparent resin taken away by the transparent aggregate is increased. Thus, on the surface of the pavement coating film to be formed, a decrease in gloss occurs due to a decrease in resin. On the contrary, when the particle diameter is larger than 5.0 mm, the ratio of the transparent aggregate and the resin is formed. As a result, when the resin is relatively large, the specific surface area of the entire aggregate is relatively reduced. On the surface of the pavement coating film, a large amount of resin appears partially and gloss unevenness occurs. When the resin is relatively small, a gap is generated between the aggregates, the smooth feeling is lost, and gravel is laid. It becomes uneven.

Next, colored aggregates include quartz sand, river sand, mountain sand, marble ground, granite ground, obsidian ground, limestone ground, ceramic ground, glass beads, glass ground, etc. and colored coatings on these surfaces. It has been applied.

  This colored aggregate also preferably has a particle size of 0.1 to 5.0 mm. When the particle diameter is smaller than 0.1 mm, when it is larger than 5.0 mm, it is the same as the above-mentioned transparent aggregate. It becomes an unclear pattern without a beam.

  The blending amount of the transparent aggregate and the colored aggregate is 200 to 600 parts by weight with respect to 100 parts by weight of the solventless transparent resin, including the transparent aggregate and the colored aggregate. When the amount is less than 200 parts by weight, the amount of resin is relatively increased, so that the fluidity is excessively increased and the coating workability at the time of glazing deteriorates. On the other hand, if the amount is more than 600 parts by weight, the amount of resin is relatively reduced, so that the fluidity is lowered, the coating workability at the time of glazing is deteriorated, and it becomes difficult to form a smooth surface. At this time, the weight of the solventless transparent resin is the solid weight of the entire binder including the curing agent.

  Furthermore, in the present invention, the weight ratio of the transparent aggregate and the landing colored aggregate needs to be 1: 0.5 to 2.5 in the ratio of the colored aggregate to the transparent aggregate. If the colored aggregate is less than 0.5 relative to the transparent aggregate, the transparent aggregate tends to be relatively conspicuous in the pavement coating film, resulting in a light and thin appearance through which the coating film is transparent. On the other hand, if there are more than 2.5 colored aggregates, the pavement coating film will not show through and will have a profound feeling, but will have a flat appearance with no transparency or depth.

Furthermore, in the present invention, known color pigments, extender pigments, additives and the like can be appropriately blended as long as the effects of the present invention are not impaired.

Examples of such color pigments include titanium oxide, zinc oxide, carbon black, ferric oxide (bengal), lead chromate (molybdate orange), yellow lead, yellow iron oxide, ocher, ultramarine, and cobalt green. And organic pigments such as azo pigments, azo pigments, naphthol pigments, pyrazolone pigments, anthraquinone pigments, perylene pigments, quinacridone pigments, disazo pigments, isoindolinone pigments, benzimidazole pigments, phthalocyanine pigments, and quinophthalone pigments.

Examples of extender pigments include heavy calcium carbonate, clay, kaolin, talc, precipitated barium sulfate, barium carbonate, white carbon, and diatomaceous earth.

Examples of the additives include plasticizers, antiseptics, antifungal agents, algaeproofing agents, antifoaming agents, leveling agents, pigment dispersants, antisettling agents, antisagging agents, matting agents, and ultraviolet absorbers.

  In addition, the application base of the present invention is not particularly limited as long as it is a base on which a pavement material is usually applied, and examples thereof include concrete, asphalt, and PC board.

  The construction of the paving material of the present invention is performed by first applying a primer such as epoxy-based, polyester-based, moisture-curing urethane, etc., which is generally used for this type of paving material, to the ground surface, if necessary. It is necessary to have sufficient adhesion between the material and the base surface. Following this, the pavement material of the present invention is spread mainly with a ridge.

  In the case of a design method using a perforated paper pattern or joint rod, after applying a primer, a joint color primer for forming the color of the joint portion is applied, and then the perforated paper pattern or joint rod is used. Adhering, spreading the paving material of the present invention, and removing the perforated pattern paper or joint rod after the coating film is cured.

In order to clarify the effects of the present invention, examples and comparative examples will be described below.
<Test method>
Using the raw materials shown in Table 1, paving materials were produced with the formulations shown in Table 2, and the following tests were performed. At this time, with respect to the mixture of transparent resin and transparent aggregate, an integrating sphere attachment device (“ISR-240A type” manufactured by Shimadzu Corporation) was attached to the main body of “Spectrophotometer UV-2200” manufactured by Shimadzu Corporation as described above. The light transmittance was measured, and the results are also shown in Table 2.

(Workability test)
Each manufactured pavement was applied to a 60 × 60 cm slate plate previously coated with a moisture-curing urethane resin primer with a thickness of 1.5 mm, and the coating efficiency was compared. At this time, evaluation was evaluated as ◎ for those with very good workability, ◯ for those with no particular problem, and × for those with poor workability such as difficulty in forming a smooth surface and poor sliding.

(Appearance depth test)
The specimens produced in the workability test were visually observed, and the presence or absence of depth and depth of the pavement coating film surface design was evaluated. Evaluation was made with ◎ for those with a very deep depth, ○ for those with a slight depth, and × for those with no depth and a flat surface.

(Appearance gloss test)
The specimens prepared in the workability test were visually observed to evaluate the degree of gloss on the pavement coating film surface. Evaluation was made with 光 沢 for high gloss, ○ for gloss, and × for no gloss.

(Slip resistance)
Each manufactured pavement was applied to a 30 × 30 cm slate plate pre-coated with a moisture-curing urethane resin primer with a thickness of 1.5 mm, cured for 3 days at room temperature, and then portable slip resistance. The slip resistance value was measured using a measuring device.

  The measurement of slip resistance is MASTRAD with the UK Road Research Institute certification, famous as “Portable Skid-Resistance Tester”, the most commonly used pendulum-type measuring instrument at present. TR-300 manufactured by the company was used. The measuring method is to measure the loss of energy generated by rubbing the road surface with a rubber slider attached to the end of the pendulum arm. The numerical value is read from 150 scales engraved on the quadrant scale. Is. This tester shows wet road slip resistance value as a guide for slip resistance value. 65 or more is generally required for roundabouts, round roads with a radius of 500 feet (152.4 m) or less on a narrow road, and 1/20 (about 10 °) slope or more and a distance of 100 yards (91.44 m) or more The conditions are 55 or more, and easy positions, that is, 45 or more places where there is no height point with a gentle slope and curve on a straight road, and there is no special condition (mixed traffic, especially the danger of causing an emergency state). In the present invention, when the value is 55 or more, it is determined that slipping is difficult.

(Contamination resistance test)
Each manufactured pavement material was applied to a 30 × 30 cm slate plate previously coated with a moisture-curing urethane resin primer with a 1.5 mm thickness using a scissors, cured at room temperature for 3 days, and then coated with a pavement material coating film. After the surface was held horizontally, No. 8 (particle diameter: 0.1 mm) colored silica sand was sprayed on the surface, and then the specimen was made vertical to compare the removability of the colored silica sand. In this case, evaluation was evaluated as ◎ for those that could be completely removed, ◯ for those that remained slightly attached, and × for those that remained in large amounts.

(Example 1 to Example 3)
As is clear from the results in Table 3, it was very good over all the test items.

(Comparative Examples 1 to 2)
As is apparent from the results in Table 3, the viscosity of the solventless transparent resin exceeds the range in the present invention, so in the workability test, in Comparative Example 1 where the viscosity is high, smoothing at the time of glazing is performed. I had a hard time. Further, in Comparative Example 2 having a low viscosity, it was difficult to make a film thickness of 1.5 mm by glazing.

(Comparative Example 3 to Comparative Example 4)
As is clear from the results in Table 3, the light transmittance when the solvent-free transparent resin and the transparent aggregate are mixed is lower than 70%, so that the gloss of the pavement coating film and the sense of depth in the appearance design can be obtained. I did not feel at all.

(Comparative Example 5)
As is clear from the results in Table 3, since the ratio of the colored aggregate is less than that of the transparent aggregate, the base material is transparent, and the depth and gloss cannot be felt in the appearance design of the pavement coating film. It was.

(Comparative Example 6)
As apparent from the results in Table 3, since the ratio of the colored aggregate is larger than that of the transparent aggregate, it was not possible to feel depth or gloss in the appearance design of the paving material coating film. Moreover, since the amount of the colored aggregate sucked the transparent resin was large, the amount of the resin in the pavement coating film was relatively small, and the glazing slipping was slightly worse in the glazing workability.

(Comparative Example 7)
As apparent from the results in Table 3, since the total amount of aggregate exceeds the range specified by the present invention, the amount of resin in the pavement coating film is relatively small, and the coating workability is poor. It was. Moreover, since aggregates appeared on the surface of the paving material in large quantities, fine irregularities were generated on the surface of the aggregate, and no depth or gloss was felt. Furthermore, in terms of contamination resistance, a large amount of colored silica sand adhered to fine irregularities.

(Comparative Example 8)
As is apparent from the results in Table 3, since the total amount of aggregate is less than the range defined by the present invention, the depth of the groundwork was not visible and the depth could not be felt. In addition, since the total amount of aggregate is small, the amount of resin is relatively large, and as a result, a large amount of resin is present on the surface of the pavement material, so that the slip resistance is extremely lowered.

Claims (2)

(A) a solventless transparent resin having a viscosity of 0.1 to 10.0 Pa · s, (b) a transparent aggregate having a total light transmittance of 70% or more when mixed with the resin, (c) ) Containing colored aggregates, with respect to 100 parts by weight of the resin, (b) and (c) are in a ratio of 200 to 600 parts by weight, and the weight ratio of the colored aggregate to the transparent aggregate is 1 : 0.5 to 2.5 Solventless glossy paving material.
Total light transmittance: In accordance with measurement method A using an integrating sphere type light transmittance measuring device specified in JISK 7105 “Testing methods for optical properties of plastics” 5.5 “Light transmittance and total light reflectance” The sample was filled into a 5 mm thick glass cell, and the total light transmittance was measured. 2. The solventless glossy pavement according to claim 1, wherein the transparent aggregate and the colored aggregate have a particle diameter of 0.1 to 5.0 mm, respectively.