KR850000271B1 - The composition of artificial slate - Google Patents

Abstract

Artificial stone slate for building materials is composed of barite (70-80%), polyamide resin (15-22%), and additives (sepiolite 2-5%, white cement 2-3%). The mixture of the above compositions is mixed at 190-200≰C by a screw mixer, which has a heating device. The heated and mixed mixture is pressed by a mold to produce products. The polyamide resin is thermoplastic, has high tensile strength, and is used a bonding material.

Description

Composition of artificial slabs

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composition of artificial slab, particularly with respect to barite powder and polyamide resins, which are flame retardant, heat insulating, soundproof and moisture resistant. The present invention relates to a composition for providing a building slab that is light in workability, compressive and tensile strength and is light in weight.

Slate is widely known as an artificial stone building material. It is mainly used as a roofing material on general buildings and as a wall board of factories, warehouses, and buildings.

It is common to mix asbestos with powder mainly made of sand gravel or crushed stone, in addition to portland cement or magnesia cement, and the surface of the product is made of a thin layer of cement pigment and waterproofing agent.

It is also known as cement lace that mainly contains cement and asbestos.

Products based on compositions such as artificial slate are particularly susceptible to impact and are easily cracked and cracked during handling such as nailing or during transportation or loading.

In addition, the low tensile and compressive strengths are not only unsuitable for use in other materials such as roofing materials, door frames, columns, tiles, tabletops, blackboards, sleepers for railway rails, etc. .

The present inventors have overcome the drawbacks of the conventional artificial slate under such circumstances to invent a composition that can produce a new building artificial slab with a large and light tensile and compressive strength and processability comparable to a general synthetic resin.

The present invention will be described in detail based on 70-80% of barite tailings and 15-22% of polyamide resin, and 2-5% of sepiotite and 2-3% of cement To provide a composition suitable as building slabs.

Barite used as a subject in the present invention is widely distributed throughout the country can be obtained cheaply. According to the literature, barite is a tetragonal system, a plate- or columnar crystal, hardness 3-3.5, specific gravity 4.3-4.7, colorless, white, ash, yellow, blue, red pearlescent, etc. Calculated in hue.

It is known that the use of this ore is used for papermaking (fillers), white pigments, etc. in addition to glass raw materials.

Barite has only industrial use value of more than 325 mesh mined, and low grade ore is less tailings.

The present inventors propose a method of industrializing the waste tailings left after recovering such useful minerals and industrializing them, and contributing to solving the reduction problem by accumulating tailings in each mine.

In the present invention, the polyamide resin, which is the main component of the specific gravity next to barite, is thermoplastic, has a strong pulling force, and has excellent impact resistance, abrasion resistance, and lubricity among plastics.

This polyamide resin is used as a purifying agent which strongly binds particles and particles of barite tailings (mostly in powder form) and as a heavy material. Representative of polyamide resins are nylon, and soft resins are also included in the broader sense.

For example, especially among soft synthetic resins such as polypropylene (P.P) polyethylene (P.E), it is a waste synthetic resin.

Recently, vinyl house cultivation, which has been spotlighted as a farming side job of farmers, has contributed to improving the diet of urban people, but is experiencing great difficulties due to the disposal of vinyl film collected after vegetable growing.

Incineration of the collected vinyl film produces soot and toxic gas, which causes air pollution, and if left in the ground, it does not mix and contaminates the soil.

The problem of disposal of synthetic resin waste is not limited to rural areas, but a similar phenomenon is occurring in cities.

For example, synthetic resin packaging such as sweets, processed foods, etc. which are poured out every day, and other various kinds of resin waste.

This enormous amount is being studied in each direction with considerable interest in establishing the measures that can be most effectively handled with the least possible pollution, but there is no guilt and no choice but to discard it in an incineration or waste dump.

However, such measures are insufficient. The present invention also proposes a method for recycling waste synthetic resins having such problems as useful resources.

Sapiolite (Mg ₂ Si ₃ O ₈ · 2H ₂ O) is used as an additive and has the characteristics of low specific gravity because it is bright, has a good feeling, and has a dense structure. By selecting such an additive, the surface of the molded article can be smooth and glossy, and the weight of the product can be realized. Next, an embodiment of the present invention will be described.

1. Formulation

Barite powder in fine powder 75% Sapiolite 5%

Nylon (finely cut) 18% Back cement 2%

Formulate in the usual way.

% Is weight ratio here.

2. Heating and kneading

The blend obtained in the first step is heated and kneaded at 190-200 ° C. using a screw kneader with a heating device.

3. Molding

The blend heated and kneaded in a screw kneader yields the desired type of product by a continuous injection molding machine. As a result of the test, the product showed a significant increase in compressive and tensile strength compared to artificial slate, superior gloss, and microscopic biopsy showed dense texture.

The slab according to the composition of the present invention combines the characteristics of synthetic resin, which is excellent in heat resistance, heat insulation, cracking, cracking, nailing and sawing, such as nailing and sawing. Various uses such as exterior cases.

In addition, the structure shows that barite, synthetic resin sapiolite, etc. are evenly overlapped, so that the insulation, sound insulation, and moisture resistance are superior to wood.

The characteristics of the product according to the present composition are compared with the substitutes as follows.

보통:

불량: ×Good:

usually:

Poor: ×

Looking at the use of the slab according to the composition of the present invention, in the field of construction, plate, wall, door frame, tile, table, tile, brick, blackboard, apartment railings, kitchen appliances exterior. Civil engineering fields include sidewalk blocks, sidewalk boundaries, railway sleepers, subway sleepers, and K-bul ducts. In agriculture and fisheries, Haitai aquaculture stationary, orchard support, vinyl house pedestal, electronics and kitchen appliances, bathtub, sink exterior, speaker cabinet, turntable cabinet and so on. As described above, the product of the present composition adopts only the advantages of wood, stone, and iron, and has various uses in various fields. Incidentally, it is a useful invention that can utilize waste materials and reduce pollution problems by adopting synthetic resins, whose industrial value is pointed out as a rare tailings and pollution problem.

Claims (1)

1. A composition of artificial slab comprising 70-80% of barite and 15-22% of polyamide resin, and 2-5% of sapiolite and 2-3% of cementite added thereto.