JP2553978B2 - Composition for engraving material and engraving material using the same - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a composition for engraving material and an engraving material using the composition.

[0002]

2. Description of the Related Art In recent years, cement-based engraving materials have been widely used as teaching materials for engraving. The conventional engraving material will be described below. An engraving material obtained by cutting light-weight cellular concrete into a predetermined size is generally used as a teaching material for elementary schools, etc., and is disclosed in Japanese Patent Laid-Open No. 64-57286 (hereinafter, referred to as "A").
Call it news. ) Collects waste materials C such as cut edges and cutting powder generated when cutting the ALC concrete standard material A, further forms them into powder, and then, by weight ratio, converts the cut waste materials into powder. 4 parts of ALC concrete powder, 1 part of white cement D, and 5 parts of water E in the same amount as the above, were mixed and kneaded by adding 1 / 1,000th of the total amount of Metroze F as a binder, and then kneading. An engraving material for teaching materials is disclosed, which is obtained by filling the mold in (1), curing at room temperature and normal pressure, and demolding. In addition, JP-A-1-320242 (hereinafter,
Called gazette. ), Cement, lightweight aggregate, inorganic bone
Lightweight and high strength with wood and cellulosic admixture
Extrudable and does not contain asbestos
A lightweight cement composition without the risk of carcinogenesis is disclosed.
It

[0003]

However, according to the publications A and B having the above-mentioned conventional structure , it is generally hard and difficult to cut, and particularly, a powerless person such as a child of a lower grade or an elderly person can cut the details in a satisfactory manner. However, there is a problem in that chipping or breakage occurs when cutting. In addition, a large amount of dust is generated when shaving, which is a sanitary problem. Furthermore, since the ground surface of the scraped surface is rough and there are many voids, it has a problem that it is not aesthetically pleasing, coloring is difficult, and it is difficult to use. further,
If exposed to water, cement and ALC concrete or
Water is absorbed between this and the lightweight aggregate.
The water content expands due to freezing, etc.
It had a problem that it was inferior in sex. The present invention solves the above-mentioned conventional problems by imparting flexibility and viscosity,
Improves machinability and makes it easy to process fine parts, it is unlikely to chip or collapse when cutting, the ground surface of the ground surface is dense, has very few pores, has excellent surface smoothness, is easy to color, and has water repellency. It is an object of the present invention to provide a lightweight and excellent composition for engraving material that can be stored outdoors and an engraving material using the same.

[0004]

[Means for Solving the Problems] To achieve this object
The composition for engraving material according to claim 1 of the present invention is
100 parts by weight and 170 to 60 parts by weight of lightweight aggregate are mixed.
And 100 to 50 parts by weight of a solvate. Contract
The composition for engraving material according to claim 2 is the composition according to claim 1,
Lightweight aggregate is inorganic foam, shells, natural stone, lightweight cement
Composition which is one kind or a mixture of two or more kinds of fine powder of product waste
Consists of. Engraving using the composition for engraving material according to claim 3.
The engraving material is 100 parts by weight of cement and lightweight aggregate 170-6.
0 parts by weight, 100 to 50 parts by weight of admixture, and 200 to water
3 0 to cure the kneaded product of the weight part has a configuration in which a.
The engraving material using the composition for engraving material according to claim 4,
In Claim 3, a composition containing 30 to 10 parts by weight of fine sand
Have.

As the cement, various kinds of Portland cement, blast furnace cement, fly ash cement, alumina cement, magnesia cement, silica cement and the like are used.

[0006] As the lightweight aggregate, inorganic foam, fine powder of shells, fine powder of natural stone, fine dust of lightweight cement products and the like are used. In addition, fine-grained sieve sand is used together depending on the application.
Examples of the inorganic foam include shirasu balloon, pumice stone, shirasu fine particles sintered and foamed, pearlite and various other inorganic foams, and those having a light bulk specific gravity are preferably used. This is to reduce the weight. As the fine powder of shells, fine powder of shells such as scallops and oysters is used. The shell may be washed with fresh water or washed with seawater. As the fine powder of natural stone, fine powder of limestone, marble, chalk, calcite, etc. is particularly preferable, but fine powder produced during processing of stone material may be used. As the fine scraps of the lightweight cement product, fine powder obtained by crushing scraps generated when the lightweight cellular concrete, the lightweight cement product, the cement-based engraving material and the like are cut and used is used. The inorganic foam is useful for weight reduction and weight increase, and since it is hollow fine particles, it imparts flexibility and improves machinability. Fine grained sand and stone powder from stone processing plants and dust from lightweight cement products
Aggregate that helps to increase the amount and mixes 1/2 to 1/5 with respect to the inorganic foam gives a pleasant feeling as if shaving stones at the time of cutting, and if it exceeds 1/2, the weight becomes unfavorable, which is not preferable. If it is less than ⅕, there is no feeling of shaving stones and the effect of increasing the amount is small. The fine powder of natural stone containing calcium carbonate as a main component is useful for increasing the amount, and since it is a fine-grained powder, it is dense and slightly flexible, and improves the machinability. Fine powder of shells not only increases the amount but also improves flexibility and viscosity to improve machinability. The fine powder of shells may be used alone, or may be used by mixing with other lightweight aggregates. As a mixing ratio with the inorganic foam, the ratio of the inorganic foam to the fine shell powder is preferably 2 to 0.05, and more preferably 1.5 to 0.1. If it exceeds 2, the flexibility becomes excessive during cutting and it is difficult to cut.
If it is less than 0.05, the hardness becomes high and the weight also increases, which is not preferable. Instead of the fine powder of shells, gypsum or fine powder of natural stone (ex. Marble or limestone) whose main component is calcium carbonate may be used. As a blending amount, 170 to 60 parts by weight, preferably 130 to 80 parts by weight of lightweight aggregate is used with respect to 100 parts by weight of cement. If it exceeds 170 parts by weight, chipping or collapse will occur and cutting dust will also be generated.
If it is less than part by weight, hardness becomes high and cutting becomes difficult, which is not preferable. 130 to 80 parts by weight is particularly preferable because it has appropriate flexibility, is easy to cut, and is light.

As the admixture, one kind or a mixture of two or more kinds of mortar adhesive, mortar waterproofing quick setting agent and the like can be used.
0 to 50 parts by weight is preferably used. With mortar glue
As a result, vinyl acetate, acrylic and synthetic rubber
Mortac / peto such as synthetic resin emulsion for admixture
Lock (manufactured by Asahi Kasei Corporation), Ibi High Bond (Ibiken)
Co., Ltd., Seeker Top Emulsion (Japan Seeker)
Coated type, kneading type, mixed type, etc.
It High-tech liquid (Kemi Co., Ltd.) as a waterproof rapid coagulant
Manufactured by Cox) and the like. When the amount of the admixture exceeds 100 parts by weight with respect to 100 parts by weight of the cement, it depends on the type of cement, but peeling easily occurs at the time of demolding during manufacturing, and when it is less than 50 parts by weight, cutting dust tends to occur during processing. Was recognized. Mortar adhesive makes the structure of the engraving material precise
It also has adhesiveness, so it can be used for cutting engraving materials.
It is easy to use, and because the engraving material has water repellency, it is especially useful outdoors.
It is suitable for those exhibited in. In addition, the shrinkage rate of engraving material is low.
The durability is improved by reducing the number of cracks and preventing the occurrence of cracks.
Can be made. Waterproof quick coagulant
Engraving materials that tend to improve strength, especially massive engraving
Can and child to prevent cracking, and the like.

[0008]

With this structure, the structure has a dense structure and the bulk specific gravity of the lightweight aggregate is light, so that the engraving material can be made lightweight, and the water retention of calcium carbonate makes it suitable and easy to cut. You can Further, since each component is well dispersed by the admixture and has a reinforcing property and viscosity, it is possible to prevent scattering of cutting powder and the like, and as a result, it is possible to prevent breakage and chipping during engraving. Furthermore, since it has water repellency, it is possible to prevent quality deterioration due to rainwater infiltration even when stored and displayed outdoors.

[0009]

EXAMPLES The present invention will be described in detail below based on examples. The present invention is not limited to these examples. A. Preparation of Sample (1) As the cement, 100 parts by weight of ordinary Portland cement (bulk specific gravity: about 1.48) was used. (2) Light-weight aggregates include: a. Inorganic foam: Shirasu balloon (Brand name: Silax PB-03, bulk specific gravity 0.18, average particle size 0.075 mm,
Manufactured by Shirasu Co., Ltd. b. Fine powder of shells: Fine powder of scallops and oyster shells (trade name: 1st class, powder specific gravity, about 1.03, manufactured by Okajima Kofu Abrasive Mill Co., Ltd.) was used. c. Fine-grained sieve sand: 0.84 of sea sand (bulk specific gravity: 1.47)
What was sieved with a mm sieve was used. d. As a marble powder, the average particle size is 0.5 to 0.0
A 5 mm one was used. e. Stone powder from a stone processing plant or a dust of a lightweight cement product was finely divided into particles having an average particle size of 0.5 to 0.05 mm or less. (3) As an admixture, a vinyl acetate-based synthetic resin emulsion (trade name: NS High Flex HF-1000, manufactured by Nippon Kasei Co., Ltd.) as a mortar adhesive, and a waterproof quick-coagulant for mortar (trade name: High-tech liquid,
Manufactured by Chemix Co., Ltd. was used.

Example 1 Using the above sample, after mixing at a compounding ratio as compared with (Table 1),
12 pieces of 100 × 100 × 200 mm samples were filled in the molds and handed to 10 testers to carry out a cutting test and to measure the bulk specific gravity. The results are shown in (Table 1).

[Table 1] In addition, among the cutting properties shown in (Table 1), since excellent flexibility and viscosity were observed, cutting dust was not generated during processing of the engraving material, the ground surface was dense, and the machinability was excellent. Good indicates that the machinability was almost the same as that of the excellent, but the cutting required some force. Good indicates that it was easy to process, but it was likely that the edge part was chipped or broken. Poor indicates that chipping, breakage, and dust were generated during processing, and that peeling occurred during mold release from the frame body during engraving material production, and external damage was observed. As is clear from this (Table 1), all of Run No. 1 to No. 3 had good cutting properties, and especially Run No. 3 showed hardness, but when the background was dense and colored, there was no color spot. The surface was smooth and could be colored beautifully. In Run No. 4 and No. 5, marble (No. 4) and scraps such as lightweight cement (No. 5) were used instead of the fine powder of shells, but both were excellent. Note that N
The o.5 admixture used had a mixing ratio of the mortar adhesive and the mortar waterproofing quick setting agent of 7: 1. RunNo.
As is clear from No. 6 and No. 7, the amount of lightweight aggregate is 170
It has been found that if the amount is more than 100 parts by weight, chipping or collapse tends to occur during cutting, and if it is less than 60 parts by weight, the bulk specific gravity increases and the weight increases, which is not preferable. Run No. 8, N
As is clear from o.9, if the mixing ratio of the fine powder of shell and the inorganic foam is less than 0.1 in the mixing ratio of the inorganic foam a and the fine powder of shell b, the hardness increases and it is difficult to cut. Becomes
If it exceeds 1.5, there are problems such as excessive flexibility,
It was found that when the fine powder of shells alone is not added and the inorganic foam is not added, the hardness tends to increase depending on the type of cement and the admixture, but fine engraving is possible. Next, as can be seen from Run No. 10 and No. 11, the admixture has a problem that dust is generated during cutting when the amount is 50 parts by weight or less, and peeling occurs at the time of demolding when the amount is 100 parts by weight or more. It turned out that there was a problem of causing poor appearance and lowering the product value. As a cement, blast furnace cement and magnesia cement were used in place of ordinary Portland cement, and when Run Nos. 1 to 3 were performed, excellent products substantially the same as those of ordinary Portland cement were obtained.

[0011]

As described above, the present invention provides cement 100.
170 to 60 parts by weight of fine powder lightweight aggregates such as shells, natural stones, and waste cement products, and admixture 100 to 5 parts by weight
Since it is a composition for carving materials consisting of 0 parts by weight, it is prepared in advance,
Just by adding 200 to 30 parts by weight of water at the sales base and curing it, it can be used as a teaching material with the following excellent characteristics, or as a hobby sculpture or sculpture exhibition material for events, sculpture material for rehabilitation or vocational training. It is possible to realize an engraving material that can be particularly suitably used as an engraving material for a model. Moreover, although the seafood industry has recently been struggling to dispose of cultured scallop shells, the present invention can effectively utilize them as lightweight aggregates. (1) Since it has flexibility and viscosity, it does not break or collapse,
It is possible to perform cutting work even to the smallest details. (2) Since it has flexibility and viscosity, it is easy to insert a cutting blade and easy to engrave. (3) Since no cutting dust is generated during cutting, the environment is not polluted and it is healthy. (4) Since the ground surface of the machined surface is dense and has no pores and is smooth, it is possible to obtain a smooth colored surface which is excellent in aesthetics of engraving and has no color spots even when colored. (5) It has water repellency and can be stored outdoors. (6) It is lightweight and can be easily carried by children and the elderly.

Claims (4)

(57) [Claims] 1. 100 parts by weight of cement and a lightweight aggregate 17
A composition for engraving material, which comprises 0 to 60 parts by weight and 100 to 50 parts by weight of an admixture. 2. The engraving material according to claim 1, wherein the lightweight aggregate is one kind or a mixture of two or more kinds of inorganic foam, shells, natural stones, and fine powder of lightweight cement product waste. Composition. 3. 100 parts by weight of cement and a lightweight aggregate 17
0-60 parts by weight, 100-50 parts by weight of admixture, and water 2
An engraving material, which is obtained by curing a kneaded material with 0 to 30 parts by weight. 4. Containing 30 to 10 parts by weight of fine sand.
The engraving material according to claim 3, which is characterized in that.