JPH04278024A - Colored silas particle - Google Patents

Abstract

PURPOSE:To obtain colored silas particles useful for raising lawn in garden, landscape gardening, horticulture, golf links, soccer ground, tennis court, etc., and for depositing lawn. CONSTITUTION:Secondary silas containing feldspar, quartz, hypersthene, volcanic glass, etc., which was piled as a lower layer soil of earth, sunk at the bottom of the water and cleaned by flow of water is heated and dried, colored with a solution of an acrylic synthetic resin pigment, heated and dried to give colored silas particles. Being porous, the silas particles have excellent water retention, holding power of fertilizer component, draining and air permeability. The colored silas particles have effects of being hued into a color much resemble to that of lawn.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to colored shirasu particles. More specifically, it relates to colored whitebait particles for growing turf, which are used for cultivation soil in gardens, landscaping, horticulture, etc., and for growing turf on golf courses, soccer grounds, tennis courts, etc., and colored whitebait particles for divots in lawns. be.

0002

BACKGROUND OF THE INVENTION Conventionally, river sand has been used as soil for growing turf in order to improve drainage and prevent soil caking. River sand is in high demand as an aggregate for concrete, and as a soil for growing grass, it is in short supply and is expensive. There are some difficulties.

[0003] Japanese Patent Application Laid-Open No. 59-98631 proposes that plants can be grown hydroponic and that they can be colored to improve interior decoration. It is heat-treated to become hard, porous sand and gravel containing a large amount of silicon dioxide, and can be placed in a container without drainage holes and used for hydroponic cultivation of plants without using other chemicals. Colored artificial gravel is described, which is characterized in that it can be used for interior decoration by being colored.

[0004] Japanese Patent Application Laid-Open No. 141210/1983 proposes a method for improving decorative soil for cultivating potted ornamental plants and surface decorative soil for gardening, using zeolite and obsidian as raw materials. The artificial granules are pulverized into granules, and many fine cavities are formed on the surface and inside by heating and firing treatment. The artificial granules are heated to about 50 to 60°C, and the warm artificial granules are mixed with pigments of the desired color. A method for coloring artificial granules having fine cavities is described, which is characterized by mixing the artificial granules with a resin liquid and kneading them to color the artificial granules in a desired color. Further, Japanese Patent Application Laid-open No. 31024/1983 describes a culture soil for horticultural plants that is colored by coating or impregnating porous stone such as pumice or lava with paint or dye.

As mentioned above, in order to obtain water retention and fertilization properties in conventional colored gardening plant culture soil, many fine cavities are formed on the surface and inside by heating and baking treatment, and a large amount of silicon dioxide is added to the soil. Although grain stones themselves are formed artificially by adding, etc., it is still impossible to artificially create anything comparable to natural grain stones. Additionally, sea sand, river sand, mountain sand, etc. used as soil for lawns are imported from countries such as China, and natural granular stones suitable for these purposes are currently rare.

[0006] From this point of view, whitebait, which is widely distributed in Kagoshima prefecture and Miyazaki prefecture, is porous and has high water retention and fertilizer retention properties, so it is used as sand for cultivating garden plants and as soil for golf course lawns. However, about 80% of whitebait is
It is made of volcanic glass and contains ores such as feldspar, pyroxene, and quartz, as well as pumice. All of these materials are porous and lightweight, so some of them float on water, unlike sand such as sea sand, river sand, and mountain sand, which are heavier and sink in water. For this reason, it is good when used as a soil for lawns on golf courses because it is porous and has excellent water and fertilizer retention properties, but on the other hand, it has many voids and is lightweight, so it has the disadvantage of being washed away by rainwater.

[0007]

[Problems to be Solved by the Invention] Therefore, an object of the present invention is to improve the porous structure unique to whitebait when used for growing grass in gardens, landscaping, horticulture, golf courses, soccer grounds, tennis courts, etc., and for divots on lawns. To provide colored shirasu particles which improve the disadvantages of floating on water due to their light weight and being washed away by rainwater without losing their properties such as being rich in water retention and fertilizer retention.

[0008]

[Means for solving the problem] The above object is to produce colored shirasu, which is produced by heat-drying shirasu containing feldspar, quartz, shisopyroxene, and volcanic glass, and then coloring it with an acrylic synthetic resin pigment liquid and heat-drying it. Achieved by particles.

[0009] The shirasu containing feldspar, quartz, pyroxene, and volcanic glass of the present invention is a secondary shirasu that is deposited as a subsoil of soil, submerged in the water bottom, and purified by the flow of water.

0010

[Function] Secondary shirasu (Himuka-type shirasu) containing feldspar, quartz, shisopyroxene, and volcanic glass, which was deposited as the subsoil of the soil used as the raw material of the present invention and submerged in the water bed to be culled, is Yamada-cho, Kitamoro-ken, Miyazaki Prefecture. It is a type of whitebait from the Nagao Mountains, and unlike the general Hokeryu whitebait, it is a type of secondary whitebait that does not form a plateau, but is deposited as a subsoil of red hoya soil, sinks to the bottom of the water, and is purified by the flow of water.

[0011] Shirasu, which is the raw material stone, contains a variety of materials ranging from large particles such as pumice and rock fragments to small particles such as silt and clay. ), some differences are recognized.

[0012] Hikari style whitebait 0.4-0.5 mm General whitebait shrimp type whitebait 0.1-0.11mm
Secondary whitebait Yoshida type whitebait 0.043mm
Secondary whitebait Himuka type whitebait 2.3~0.
09mm Secondary whitebait of the present invention The Himuka-type whitebait used as the raw material of the present invention is a whitebait from the Nagao Mountains, Yamada-cho, Kitamoro-ken, Miyazaki Prefecture, and unlike the general Hike-ryu whitebait, shrimp-type whitebait, and Yoshida-type whitebait, it does not form a plateau and has a red hoya soil. It is a type of secondary shirasu that was deposited as the subsoil of water, sank to the bottom of the water, and was purified by the flow of water.

[0013] Hikaryu, Ebino-type, and Yoshida-type whitebait exhibit a gray-white color, and even if they are colored with a pigment, they cannot be colored to the original color of the pigment because of the gray component, but the Himuka-type whitebait of the present invention is almost white. It is similar to whitebait and can be colored to the original color of the pigment.

The acrylic synthetic resin pigment liquid used in the present invention uses an acrylic synthetic resin emulsion as a base material, such as an acrylic acid alkyl ester resin, an acrylic acid-acrylic acid alkyl ester copolymer, or a methacrylic acid-acrylic acid alkyl ester. copolymers, ethylene-acrylic acid alkyl ester copolymers, vinyl chloride-acrylic acid alkyl ester copolymers, methacrylic acid-alkyl ester resins, acrylic acid alkyl ester-epoxy copolymers, etc. Specifically, methyl Using methacrylate and butyl acrylate, a pigment of a desired color is added thereto and dispersed in an acrylic synthetic resin emulsion to obtain an acrylic synthetic resin pigment liquid. There are a wide variety of pigments to be used depending on the desired color, but for example, in the case of blue and green, inorganic pigments commonly used in paints include navy blue, ultramarine blue, cobalt blue, chrome green,
Chromium oxide, etc., and organic pigments include copper phthalocyanine, metal-free phthalocyanine, indanthrone blue,
There are chlorinated copper phthalocyanines, brominated copper phthalocyanines, etc., and Fastogen Super Violet (Fastogen Super Violet), which is a registered coloring agent of the Vinyl Chloride Food Sanitation Council and the Polyolefin Sanitation Council, is preferable from the viewpoint of safety and coloring properties for whitebait.
let RV-S, manufactured by Dainippon Ink Co., Ltd.), Fastogen Blue BSF (Fastogen Bl
ue BSF, manufactured by Dainippon Ink Co., Ltd.), Fastogen Green S (Fastogen Green
nS (manufactured by Dainippon Ink Co., Ltd.), etc. is preferable. The colored whitebait particles of the present invention can be colored not only blue or green but also in any desired color by changing the pigment, making it possible to obtain culture soil for use in gardening and the like in various colors. Furthermore, this acrylic synthetic resin pigment liquid contains commonly used paint adjuvants such as a paint film drying accelerator, a pigment dispersion improver, a paint fluidity regulator, a coating surface conditioner, a plasticizer, and a preservative. agent, fungicide (antibacterial agent),
It is also possible to add ultraviolet absorbers and the like.

[0015] The method for producing colored whitebait particles of the present invention includes, for example, excavating whitebait from the Nagao mountain range, Yamada-cho, Kitamoroka-gun, Miyazaki Prefecture, and selecting those with a diameter of 2 mm or less, followed by heating in a rotary kiln at 200 to 800°C, preferably 250 to 300°C. After drying at a temperature of 0.2 mm or less, grain stones of 0.2 mm or less are removed. Furthermore, the particles suitable for potting soil differ depending on the type of lawn, so
Sieve into two types: 0.6-2 mm (A) and 0.2-0.6 mm (B). Shirasu of each particle size is put into a mixer, and acrylic synthetic resin pigment liquid is added and kneaded. Approximately 20
After kneading for 1 minute to 1 hour, confirm that the synthetic resin pigment has sufficiently filled the voids and colored the mixture evenly.
Blow warm air at 00℃, preferably 35 to 40℃, and heat at 15℃.
Rotate the mixer for ~20 minutes, preferably at 15 minute intervals for 2-3 minutes, preferably 2 minutes, to ensure even drying;
Drying is completed in ~15 hours. Furthermore, as a finishing touch, 2m
After sieving into two types of 0.6 mm (A) and 0.6 mm (B) to remove the solidified matter caused by the synthetic resin, the product is obtained.

Since the colored whitebait particles of the present invention are porous, they have excellent water retention, fertilizer component retention, drainage, and air permeability.

[0017] It has been found that the secondary shirasu deposited as the subsoil of the soil used as the raw material of the present invention and cleaned with water has a strong ability to adsorb pigments, so acrylic synthetic resin is the easiest to melt with water. In combination with the excellent adhesion performance and the excellent pigment adsorption performance of whitebait, the phenomenon of colorant dissolution due to long-term rainwater and fading due to ultraviolet rays has been solved.

Furthermore, since the cavities of the porous raw stone are filled with these acrylic synthetic resin pigments, the specific gravity of the colored grain stone is 1.0 to 1.1, compared to 0.8 for the raw stone. As a result, the suspension of rainwater is eliminated, and the intended purpose of the lawn soil is fulfilled. Even though the synthetic resin pigment fills the voids, the minimum voids necessary for water retention and fertilizer retention remain, so compared to natural sand that has no water retention or fertilizer retention properties, it is difficult for plants to retain water or fertilizer. There is a marked difference in the growth of the two.

[0019]

[Example] Example 1 After excavating secondary whitebait in the Nagao Mountains, Yamada-cho, Kitamoroka-gun, Miyazaki Prefecture 2
We sort out those smaller than millimeters and process them in a rotary kiln for about 30 millimeters.
After drying at a temperature of 0°C for about 15 minutes, grain stones of 0.2 mm or less were removed, and 0.6-2 mm (35%) and 0.2-0.
It was further sieved into two types of 6 mm (65%).

Next, each of the sieved Shirasu particles was added separately to 1 liter of an acrylic synthetic resin pigment solution prepared by preparing a green pigment in an acrylic synthetic resin emulsion solution (trade name: Full Green (manufactured by Nitto Denko Corporation)). On the other hand, 35 liters of whitebait particles were put into a mixer and kneaded.

[0021] The mixture of full green-whitebait particles is mixed with about 3
After kneading for 0 minutes, confirm that the synthetic resin pigment liquid evenly filled the voids of the Shirasu particles. After confirming that the coloring was even and uniform, warm air at 50°C was blown into the mixer, and the mixture was mixed at 15-minute intervals. The mixer was rotated for 2 minutes to ensure uniform drying, and the drying was completed in 12 hours.

[0022] When hot air is applied to a mixture of shirasu particles and acrylic synthetic resin pigment liquid, the shirasu particles and synthetic resin may solidify and form nodules. 0.6 mm or 2.
After passing through a 0 mm sieve, the product was packed into bags to obtain a green-colored whitebait particle product.

Comparative Example 1 The same procedure as in Example 1 was carried out, except that the secondary shirasu from the Nagao mountain range, Yamada-machi, Kitamoroka-gun, Miyazaki Prefecture, was replaced with a common Hokuryu shirasu that exists on the plateau.

Comparative Example 2 The same procedure as in Example 1 was carried out, except that the secondary whitebait from the Nagao mountain range in Yamada-cho, Kitamoroka-gun, Miyazaki Prefecture was changed to gray-white shrimp-shaped secondary whitebait that exists on the plateau.

The following tests were conducted on the colored shirasu particles obtained in Example 1 and Comparative Examples 1 and 2.

(1) Green coloring test of acrylic synthetic resin pigment The colored shirasu particles of Example 1 and Comparative Examples 1 and 2 were visually compared for differences in color before and after coloring. The results are shown in Table 1.

[0027]

[Table 1]

(2) Elution test of acrylic synthetic resin pigment After immersing the colored Shirasu particles obtained in Example 1 in water for 7 days, draw out about 50 ml of the water and visually observe the difference in color before and after immersion. compared. As a result, there was no change in color at all.

(3) Discoloration test Take out 200g of the colored whitebait particles obtained in Example 1, put them into a beaker of about 1 liter, and supply water through a glass tube at a rate of 1 to 2 liters/min and a water temperature of 25±3°C. After draining in running water for 5 hours, the particles were drained, air-dried, and then decolorized and compared with untreated colored whitebait particles. As a result, no change in color was observed.

(4) Lawn Growth Test The colored shirasu particles obtained in Example 1, the shirasu shirasu, crushed pumice and tuff, and river sand were each mixed at 1.80 g.
Fill a 0cm3 clay pot, add enough water,
Kentucky Bluegrass lawn seeds were sown and the growth of the lawn was observed for 10 days. The results are shown in Table 2.

[0031]

[Table 2]

[0032]

[Effects of the Invention] Since the colored whitebait particles of the present invention are porous, they have excellent water retention, fertilizer component retention, drainage, and air permeability. Furthermore, the Himuka-type whitebait used in the present invention is a whitebait that is almost white and can be colored to the original color of the pigment, so the colored whitebait particles can be colored to a color that closely resembles the color of grass. In recent years, an increasing number of golf courses have been spraying colorants on the grass to preserve its green color during the winter season when the grass dries up.In addition to coloring the leaves, coloring the ground with soil can help preserve the beautiful golf course turf surface and improve water retention. It is also a better soil than conventional sand in terms of fertilizer retention.

Claims (3)

[Claims] 1. Colored shirasu particles, which are obtained by heat-drying shirasu containing feldspar, quartz, perilla pyroxene, and volcanic glass, and then coloring the shirasu with an acrylic synthetic resin pigment liquid and heat-drying the shirasu. [Claim 2] A claim characterized in that shirasu containing feldspar, quartz, pyroxene, and volcanic glass is secondary shirasu that is deposited as a subsoil of soil, submerged in the water bottom, and purified by the flow of water. 1. Colored shirasu particles according to 1. [Claim 3] Either of Claim 1 or Claim 2, wherein the shirasu containing feldspar, quartz, pyroxene, and volcanic glass is a natural grain stone selected to have a size of 0.2 mm to 2.0 mm. Colored whitebait particles as described in one.