JPS61228067A - Method for coloring water-holding porous aggregate - Google Patents

Abstract

PURPOSE:To color the titled aggregate suitable for basic material useful as water culture horticulture, by adding an acrylic primary coating material to a natural aggregate, mixing them, drying the resultant mixture, adding another acrylic secondary coating material thereto, mixing them, and drying the resultant mixture. CONSTITUTION:(B) A coating material base mixture solution is prepared from (i) 70-80%, based on (A) natural porous aggregate having communicating pores, inorganic high polymer and (ii) 30-20%, based on (A) the natural porous aggregate, acrylic synthetic resin emulsion. (C) 40-70pts.wt. precipitated calcium carbonate and (D) 5-15pts.wt. titanium oxide are added to 100pts.wt. coating material base mixture solution to give a primary coating material, which is then mixed with a secondary coating material obtained by adding (E) 5-25pts. wt. inorganic pigment to 100pts.wt. component (A). The primary coating material is then added to the component (A), and mixed therewith by rotation, and the resultant mixture is once dried. The secondary coating material is then added thereto and mixed therewith by rotation, and the resultant mixture is dried in the state of spread and allowed to stand to color the water holding porous aggregate.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field This invention relates to a method for coloring water-retaining porous aggregates used as basic materials for hydroponic horticulture.

(b) Conventional Technology As is well known, with the change in architectural styles, the use of ornamental plants indoors has rapidly progressed, and hydroponic gardening, such as potted plants, has been frequently used as a common means and method for this purpose. It has reached the point where Traditionally, the basic materials for hydroponic gardening, i.e. soil for potted plants, etc., have been natural soil or synthetic (artificial) soil.
Aggregate is applied. Natural soil has become unclean as it hardens, rots, grows mold, and rots the roots of plants over time.

In addition, the color tone of this natural soil is caused by moisture due to the so-called upper layer.
Although it changes with time, the coloring property was not considered at all. On the other hand, synthetic (artificial) aggregate is made from an artificially shaped spherical brown foamed sintered structure, and although it has pores, there are considerably more closed pores than open pores, which causes problems in terms of moisture retention. It had a point. Furthermore, since the basic color of this synthetic aggregate is dark, coloring it has little meaning.

(c) Problems to be Solved by the Invention Therefore, the present invention uses a natural porous aggregate with continuous pores and high water retention as a base material for hydroponic gardening, and adjusts water absorption and drainage according to humidity. It is an object of the present invention to provide a method for coloring porous aggregate, which is capable of effectively carrying out this process, and which is capable of providing various coloring properties to this naturally occurring porous aggregate.

(φ Means for Solving the Problems In order to achieve the above-mentioned object, the present invention specifically provides for natural porous aggregates having continuous pores,
A coating material base mixture is prepared by mixing 0 to 80 parts of an inorganic polymer material and 30 to 20 parts of an acrylic synthetic resin emulsion, and 4 to 4 parts of the coating material base mixture is added to 100 parts of the coating material base mixture.
A first coating material obtained by adding 70 parts of precipitated calcium carbonate and 5 to 15 parts of titanium oxide, and a first coating material obtained by adding 5 to 25 parts of an inorganic pigment to 100 parts of the coating material base mixture. and a second coating material, add the first coating material to the natural porous aggregate having communicating pores and mix by rotation, once dry, add the second coating material and mix by rotation, - This is a method of coloring water-retentive porous aggregate that is dried after being spread and left to stand still.

(e) Description of Examples Hereinafter, the method for coloring water-retaining porous aggregate according to the present invention will be described in detail based on specific examples.

Natural porous aggregates applied to this invention are, for example,
It is provided by a light yellow or light gray small granular aggregate called pumice. This natural porous aggregate is a glass structure made of volcanic eluate, and its major feature is that it has continuous pores. Generally speaking, this natural porous aggregate is naturally produced in terms of properties and shape, so there is no artificial unnaturalness, and it is suitable for any application. It can also be used in a calm manner. On the other hand, although this natural porous aggregate has the advantage of being soft, it has the disadvantage of becoming fine grained due to wear. The above-mentioned drawbacks can be solved by hardening the surface using a colored coating material as described below. On the other hand, the interior sensibility of this natural porous aggregate for use in hydroponic gardening gives a strong impression of cleanliness due to its color, and its shape is sand grain-like with no sharp edges, so it tends to give a sense of stability. In terms of color, it is pale yellow or light gray, so coloring is effective, and even inorganic pigments can produce a wide variety of colors, while organic pigments can produce almost any color. On the other hand, natural porous aggregate has complete natural interconnected pores, so porosity =
It can be called water absorption rate, and absorbs and drains in response to humidity, making it extremely advantageous as a basic material for reeds and hydroponic gardening.

Next, the method for coloring the natural porous aggregate described above in accordance with the present invention will be described in detail. First, in this invention, a coating material base mixture is prepared. The coating material base mixture may include, for example, an inorganic polymer such as colloidal silica,
It is obtained by mixing 30% to 20% of an acrylic synthetic resin emulsion to 6 to 80% of material 70q. A first coating material and a second coating material are prepared using this coating material base mixture. The first coating material is the coating material base mixture 100
The second coating material is obtained by mixing 40 to 70 parts of precipitated calcium carbonate and 5 to 15 parts of titanium oxide per 100 parts of the coating base mixture.
It is obtained by blending 5 parts to 25 parts of an inorganic pigment such as iron oxide, kudem oxide, cobalt oxide, copper oxide, etc.

The @1 coating material and the second coating material prepared in this way are
In the next step, the surface of the natural porous aggregate is coated. First, natural porous aggregate is placed in a V-type mixer, and a small amount of water is sprinkled on the aggregate to keep the surface of the aggregate slightly wet. The V-type mixer is operated, and while the natural porous aggregate is being rotated, the first coating material prepared in advance is added and mixed by rotation for about 3 to 5 minutes. Once the V-type mixer is stopped, the mixture is left to dry for about 15 to 30 minutes. Next, the second coating material prepared in advance is added and applied for about 3 to 5 minutes.
Mix with fair rotation. After a period of time has elapsed, the aggregate is taken out, spread on a flat place, and dried naturally or with hot air to obtain colored aggregate.

(f) According to the method for coloring water-retentive porous aggregate of the present invention, which has a configuration that exceeds the effects of the invention, it is possible to provide an extremely effective basic soil material for hydroponic gardening that is applied indoors, etc. . That is, according to the present invention, a light-colored natural porous aggregate is applied to the raw material and an effective coloring process can be performed on the material, so that aggregates with an extremely wide variety of colors can be obtained. Furthermore, the colored aggregate obtained according to the present invention has high color fastness, and when a sharp color tone is required, it will not change color for several years even if a small amount of organic SR is used. Furthermore, since the surface of the colored aggregate obtained by the present invention is hardened by a coating film, there is little risk of fragmentation or pulverization, and the material can sufficiently withstand repeated use. Furthermore, the colored aggregate obtained by this invention is
Hydroponics has several advantages, including that water retention is carried out inside the aggregate and the water retention capacity does not decrease, that the aggregates do not stick to each other or adhere to eC and solidify, and that the color does not discolor when washed. It has many advantages as a basic aggregate for horticulture.

Claims (1)

[Claims] 70-80 for natural porous aggregates with continuous pores
% of an inorganic polymer material and 30 to 20% of an acrylic synthetic resin emulsion. A coating material base mixture is prepared by mixing 100 parts of the coating material base mixture with 40 to 70 parts of precipitated carbonic acid. Calcium, a first coating material obtained by adding 5 to 15 parts of titanium oxide, and the coating material base mixture 10
0 parts and a second coating material obtained by adding 5 to 25 parts of an inorganic pigment, and adding the first coating material to the natural porous aggregate having continuous pores, mixing by rotation, and once drying. A method for coloring water-retaining porous aggregates, which comprises: adding the second coating material, mixing by rotation, and drying by spraying and leaving to stand still.