JPH11140426A - Utilization of diatomite and auxiliary for surface friction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reinforce frictional and tractive forces by covering a surface, such as the back surface of shoe, the surface of a vehicle tire, the surface of a railway or railway track or the surface of a road, with a powder mixture prepared from diatomite and crushed stone powder by a coating method, a spraying method or a scattering method. SOLUTION: A powder mixture prepared from diatomite and crushed stone powder in an amount of 40-80 wt.% based on the diatomite is provided as a surface friction auxiliary. Domestically produced diatomite originated from different production places is preferably used in an untreated state as the diatomite. The crushed stone powder is a water-containing aluminosilicate mineral having a composition belonging to harmotome or mordenite.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method of using diatomaceous earth, and a surface friction aid prepared by preparing diatomaceous earth and crushed stone powder.

[0002]

2. Description of the Related Art Conventionally, diatomaceous earth (powder) has been used as a traction agent (a surface friction aid according to the present invention) on the surface of shoe soles, vehicle tires, railroad tracks or tracks or road surfaces. The method is known from publications and has been commercialized. [For example, U.S. Pat.
No. 56744, trade name (trademark): powder spike]

[0003]

However, although domestic products have anti-freezing agents for road surfaces, etc., there is no substitute for the above-mentioned foreign products. No improvement proposals have been made. The friction (traction) effect (force) and the suction effect (force) are used interchangeably.

By the way, diatomaceous earth is also produced in Japan, and industrial products using it as a raw material (for example, chromatography carriers, filter aids, absorbents, abrasives, bricks,
Insulating agent etc. ) Is provided, but is used differently from the present invention.

The present invention has been made in view of such circumstances, and a method of using diatomaceous earth which has improved the adsorption effect including the cost and reforming effect of the use of known foreign diatomaceous earth, and diatomaceous earth and crushed stone powder And to provide a surface friction auxiliary material prepared from

[0006]

SUMMARY OF THE INVENTION In order to solve the problem, the present invention relates to a method of using diatomaceous earth, which comprises diatomaceous earth and crushed stone on the back of shoes, tires of vehicles, railroads or tracks or road surfaces. The present invention is characterized in that friction and traction are increased by coating the powder containing the prepared powder, including coating, spraying or spraying.

[0007] A surface friction aid, which is used to increase friction and traction on the surface of shoe soles, vehicle tires, railroad tracks or tracks or road surfaces, etc., is used to prepare diatomaceous earth and crushed stone powder. It is characterized by becoming.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the method for using diatomaceous earth according to the present invention is used for a surface of a railway or a track or a road surface in a state where diatomite is frozen or snow-covered.

Further, an embodiment of the surface friction aid of the present invention uses a foreign diatomaceous earth (powder spike) whose diatomaceous earth is known or a domestically produced diatomaceous earth derived from a different production area without any treatment. The crushed stone powder is a hydrous aluminosilicate mineral having a composition similar to Harmotome or Mordenite.

Here, the mixing ratio of the crushed stone powder to the diatomaceous earth is in the range of 40% by weight to 80% by weight.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings.

The surface friction aid (mixed powder) prepared from diatomaceous earth and crushed stone powder is a foreign diatomaceous earth (powder spike) whose diatomaceous earth is known, or a domestic diatomaceous earth derived from a different production area, preferably Akita diatomaceous earth or Hokkaido. The diatomaceous earth produced is used untreated, and the crushed stone powder is a hydrous aluminosilicate mineral having a composition similar to Harmotome or Mordenite.

Known foreign diatomaceous earth (powder spike)
FIG. 1 is a schematic diagram illustrating the particle shape of the powder [untreated]. However, the creation of the schematic diagram is based on observation with a scanning electron microscope. (Hereinafter, the same applies to the schematic diagram.) Here, the particle shape is regularly small holes (d ′ = 0.25μ) in the cylindrical side surface.
m, d '' = 0.75 μm). The water content of the crushed stone powder determined by the heat treatment was 5.02%.

FIG. 2 is a schematic diagram illustrating the particle shape of diatomaceous earth (untreated) from Akita. Here, the particle shape is plate-like, and the existence of many holes (d = 1.60 μm) on one surface is recognized.

FIG. 3 is a schematic diagram illustrating the particle shape of diatomaceous earth from Hokkaido (untreated). Here, the particle shape has a flaky honeycomb structure, and the presence of holes (d = 1.00 μm) is recognized.

Although a schematic view of the crushed stone powder as viewed by a scanning electron microscope is omitted, it is massive and generally known foreign diatomaceous earth (powder spike) also contains many small particles.

Table 1 shows the results of a component analysis test on the composition of the crushed stone powder. The water content of the crushed stone powder determined by the heat treatment was 1.49%, and the ratio of silica / alumina analyzed by X-ray diffraction was about 10.

[0018]

[Table 1]

Further, the particle size distributions of known foreign diatomaceous earth (powder spike), crushed stone powder and domestic diatomaceous earth are shown in FIGS. Here, FIG. 4 shows foreign diatomaceous earth (powder spike) (untreated), FIG. 5 shows crushed stone powder, FIG. 6 shows diatomaceous earth from Akita (untreated), and FIG. 7 shows diatomaceous earth from Hokkaido (untreated).

A lab-scale test (not shown) similar to that of US Pat. No. 5,456,744, which was previously described, provided a better friction and better than the known foreign diatomaceous earth (powder spike) alone.
The mixing weight ratio of diatomaceous earth (including powder spike) and crushed stone powder in the surface friction aid (the present invention) for which the traction effect was confirmed is shown. (The underline shows a remarkable effect.) A) Foreign diatomaceous earth (powder spike): crushed stone powder = 3:
2/1: 1/2: 3 B) Diatomaceous earth from Akita: Crushed stone powder = 3: 2/1: 1/2: 3
/ 3: 7/1: 4 C) Diatomaceous earth from Hokkaido: crushed stone powder = 3: 7/1: 4

That is, as the surface friction aid, the mixing ratio of crushed stone powder to diatomaceous earth is preferably in the range of 40% by weight to 80% by weight.

The effect of mixing the crushed stone powder with diatomaceous earth (including known foreign diatomaceous earth (powder spikes)) is good in the degree of mixing (mixing degree) of both in the mixed powder (surface friction aid). Thus, a synergistic effect on the adsorption of water molecules is generated, and the function of adsorbing water as crystals (particles) is improved.

In the most preferred embodiment, diatomaceous earth from Akita is used, and crushed stone powder is mixed in an amount of 40 to 50% by weight. In this case, the slope formed on the ice surface at an inclination angle of 15 ° (gradient rate of 27.66%)
The results showed that the mileage increased by 8.5 to 17.5% compared to the use of only foreign diatomaceous earth (powder spike), and a remarkable effect (enhancement of friction and traction) was recognized.

The reason why the surface friction aid enhances the friction and traction force will be discussed below. As can be seen by comparing FIGS. 5 and 6, the particle size distributions are similar and the degree of mixing is good. The porosity of diatomaceous earth from Akita is as small as about 1.60 μm, and the water content is relatively high (approximately 10
%), The crushed stone powder functions as a link (adhesive) and has good adsorptivity to the surface. As a whole, the function of adsorbing water molecules by the capillary suction force of the crystals (particles) is synergistically improved.

On the basis of the above experimental facts, when a mixed powder having a remarkable effect was subjected to a field test, a vehicle stuck in a frozen place or a snowy road could be moved without any problem, and its effectiveness was confirmed. Was done. That is, it was found that the mixing ratio based on the experimental fact was effective as a surface friction aid without being affected by the scale of the experiment.

[0026]

According to the present invention, the known diatomaceous earth is prepared by preparing a known diatomaceous earth (powder spike) or domestic diatomaceous earth and crushed stone powder in an appropriate ratio. (Powder spike) can enhance the friction and traction effects and can provide an inexpensive surface friction auxiliary material.

[0027] As a result, in cultivating a wide variety of uses of diatomaceous earth, particularly in the use of diatomaceous earth as a surface friction aid, it contributes to material development such as improvement of cost and improvement of adsorption effect including reforming. is there.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating the particle shape of a known foreign diatomaceous earth (powder spike) powder [untreated].

FIG. 2 is a schematic diagram illustrating the particle shape of diatomaceous earth (untreated) from Akita.

FIG. 3 is a schematic diagram illustrating the particle shape of diatomaceous earth from Hokkaido (untreated).

FIG. 4 is a data plot showing the particle size distribution of a known foreign diatomaceous earth (powder spike) [untreated].

FIG. 5 is a data plot showing the particle size distribution of crushed stone powder.

FIG. 6 is a data plot showing the particle size distribution of diatomaceous earth (untreated) from Akita.

FIG. 7 is a data plot showing the particle size distribution of diatomaceous earth from Hokkaido (untreated).

Claims (5)

[Claims] 1. Friction and traction force by coating, including coating, spraying or spraying a mixed powder prepared from diatomaceous earth and crushed stone powder on the surface of shoe soles, vehicle tires, railroad tracks or tracks or road surfaces, etc. A method for using diatomaceous earth characterized by augmenting diatomaceous earth. 2. The method for using diatomaceous earth according to claim 1, wherein the surface is a railway or a track or a road surface in a frozen or snow-covered state. 3. A diatomaceous earth and crushed stone powder are prepared as a surface friction auxiliary material used for enhancing friction and traction on the surface of a shoe sole, a vehicle tire, a railroad or a track or a road surface. A surface friction aid characterized by becoming. 4. A diatomaceous earth, wherein domestically produced diatomaceous earth derived from different production areas is used without treatment, and the crushed stone powder is a hydrous aluminosilicate mineral, and is used as a harmotome.
The surface friction aid according to claim 3, which has a composition similar to me) or mordenite. 5. The mixing ratio of crushed stone powder to diatomaceous earth is 40.
The surface friction aid according to claim 3 or 4, wherein the amount is in the range of from 80% by weight to 80% by weight.