KR102370666B1 - Method for manufacturing plastic block with recycled waste wire covering - Google Patents

Abstract

The present invention relates to a method for manufacturing a plastic block by recycling a waste wire sheath, in which an eco-friendly plastic block with high compressive strength, excellent durability, and excellent heat island response is manufactured by pulverizing a sheath of a waste wire, which is a wire used for power transmission and expired or discarded, in a form of powder, mixing the sheath of the waste wire with an additive such as a compatibilizer, which is a multifunctional high-performance inorganic binder, and a coloring pigment, and performing a process using extrusion, pressing, and cooling. The block manufactured according to the present invention has excellent adhesive strength, chemical stability, elasticity, absorptance, and durability, does not cause a whitening phenomenon, has excellent heat island response ability, and has a manufacturing cost that is cheaper than a manufacturing cost of a general calcined clay block or a general cement block, and the waste wire, which is industrial waste, is recycled and used as a main raw material so that an enormous cost required for disposal of the waste wire is saved, and thus many advantages in economic terms are obtained, and an eco-friendly effect is obtained.

Description

Method for manufacturing plastic block with recycled waste wire covering

The present invention relates to a plastic block manufactured by recycling the covering of a waste electric wire, and more particularly, the life of an electric wire used for power transmission has expired or the coating of a discarded electric wire is crushed into a powder form, and this is a multifunctional, high-performance weapon Waste electric wire characterized in that it is mixed with additives such as compatibilizers and coloring pigments as binders to manufacture eco-friendly plastic blocks with high compressive strength, excellent durability, and excellent heat island response through a process using extrusion, pressing and cooling. It relates to a method for manufacturing a plastic block using recycled coatings.

In general, most of the waste wires are waste wires that are generated during the processing of power cables or communication cables or power cables at power cable processing companies. .

Looking at the general processing process of the waste wire, in the case of a waste communication cable and a waste wire cable, the waste wire is collected and undergoes primary and secondary crushing and stripping processes. In this process, metal materials such as copper and resins such as polyethylene and polypropylene are generated, the synthetic resin is discarded through an incinerator, and the copper is recycled by wire manufacturers.

Waste synthetic resins such as polypropylene, polyethylene, and polyvinyl chloride used as insulating materials in the process of treating the waste wires have been incinerated in the past, but they cause environmental pollution due to the generation of air pollutants and dioxins. Various restrictions are followed. On the other hand, general sidewalk blocks, permeable blocks, landscaping blocks, fence blocks, etc. were made of clay or made of cement and used. However, the above blocks are expensive to manufacture, and they are not only easily damaged by bicycles or motorcycles, but also are hard, so that if a pedestrian falls or falls while riding a bicycle or motorcycle, it threatens safety or causes a major accident. There were problems that caused it.

In order to solve the above problems, technologies for manufacturing blocks using waste wire coverings have been developed. As a barrier block for sidewalks, the coating stripped from the waste communication cable or power cable is pulverized into fine particles using a grinder, and any one or more selected from the waste coating material, polyethylene, bericulite, pearlite, or sepiolite is mixed in a certain ratio. Manufactured using a waste wire coating that has the function of recycling resources and improving the environment according to waste treatment by efficiently treating the coating of the waste wire, which is not easily recyclable and has a low recyclability by mixing and melt-extruding it at a certain temperature A sidewalk boundary block is disclosed, and in Korean Patent Application Laid-Open No. 10-2007-0027213, the surface layer consists of waste tire crushing chips finely pulverized to 1 to 2 mm, and the rear layer is crushed chips for waste wire coverings pulverized to 1 to 3 mm. Rubber block using waste tire crushing chips and waste electric wire covering crushing chips that can reduce manufacturing cost and greatly improve product quality and increase usability as well as reduce environmental pollution by recycling waste resources. A manufacturing method is disclosed, and in Korean Patent Application Laid-Open No. 10-2010-0060810, it is used instead of wood previously used as stairs for hiking trails and at the same time as soil leakage prevention and climbing trail stairs having a function to prevent soil leakage. , Pulverize the coating stripped from the waste communication cable or waste power cable into fine particles using a pulverizer, and mix the waste coating material pulverized into the fine particles, polyethylene (PE), perlite, vermiculite, zeolite or sepiolite at a certain ratio By obtaining through melt extrusion at a certain temperature, it is possible to solve the problem of damage and decay of the stairs of hiking trails, prevent soil leakage, and efficiently process the covering of waste wires that are not recyclable because they are not easy to recycle, thereby saving resources. It is manufactured using the waste wire covering that has the function of improving the environment according to recycling and waste treatment. Crude soil leakage prevention and hiking trail stairs are disclosed. Also, Korean Patent No. 1151475 relates to a method and apparatus for recycling the covering material of a waste electric wire. A technology is disclosed so that it can be cut and molded into another product by extruding it, and Korean Patent Publication No. 2016-0107672 prevents pollution and recycling of raw materials by not chemically treating raw materials such as waste wires. Disclosed is a technology related to a waste wire recycling sorting system that can improve productivity. In No. 20-0414424 for the domestic registration office, the wire coating is crushed using the waste wire coating particles as the raw material, and the block is formed by compression molding using an adhesive. It is economical, has a simple structure, and is sturdy, and it is easy for the visually impaired to check the presence and shape of the earth by the touch of the sole or cane in normal walking conditions, and there is no deformation or damage. A used braille block is disclosed.

However, in the above prior arts, the construction and manufacturing steps are complicated in constructing a plastic block using the waste wire covering, so the manufacturing cost is high, the manufacturing manpower is required, and the quality of the product is deteriorated due to the poor adhesion of the waste wire covering powder. There were problems such as deterioration.

Accordingly, as a result of intensive research on the utilization of the waste wire coating, the present inventors added a compatibilizer to the waste wire coating powder, thereby lowering the manufacturing cost of the material, improving the adhesion and durability of the plastic block, and chemical stability as well as , it has excellent cushioning, and it was confirmed that accidents can be reduced by the elasticity of the block even if it falls while walking or riding a bicycle, etc., and the present invention has been completed.

Domestic Patent Publication No. 10-2010-0060788 Domestic Patent Publication No. 10-2007-0027213 Domestic Patent Publication No. 10-2010-0060810 Domestic Patent Publication No. 2016-0107672 No. 20-0414424 for domestic registration Domestic Registered Patent No. 1151475

The present invention relates to the coating of waste electric wire which is industrial waste, that is, waste polyethylene, waste polystyrene, waste polypropylene, waste polyvinyl chloride, waste polyethylene, waste cross-linked polyethylene, waste expanded polyethylene, waste cross-linked expanded polyethylene, waste polypropylene, When a block is manufactured by powdering waste nylon, waste polyurethane, waste fluororesin, etc., it is intended to solve and supplement the problems of the prior art, such as poor compatibility with each other and poor adhesion, and suppresses phase separation In order to do this, ethylene propylene rubber (EPR), styrene butadiene styrene (SBS), and chlorinated polyethylene (CPE), which are compatibilizers, are mixed and added in a ratio of 3: 2: 1 to increase the tensile strength. An object of the present invention is to provide a method for manufacturing a plastic block using recycled wire coverings that are slightly reduced, but have improved chemical stability, impact strength, cushioning, durability, and the like.

In order to achieve the above object, as a solution of the present invention, the powder of the waste wire coating, which is a main raw material, is put into a grinder and pulverized (S01), and the powder of the waste wire coating that has been subjected to the powdering process (S01) and a compatibilizer Extrusion process (S03) and the extrusion process (S03) in which the mixture of the powder and compatibilizer, which has been subjected to the mixing process (S02) and the mixing process (S02), and the compatibilizer are put into the mixer and extruded A pressing process (S04) of injecting the extruded product from the to a molding machine to form a block-shaped body and a cooling process (S05) of lowering and drying the temperature of the block-shaped body that has undergone the pressing process (S04) and the cooling It comprises a processing process (S06) of processing the main body that has undergone the process (S05) and a shipping process (S07) of packaging and shipping the main body that has passed the processing process (S06).

In the powdering process (S01), the coating stripped from the waste wire is pulverized to a range of 1 to 10 mm using a pulverizer.

In mixing the coating powder obtained by grinding the coating of the waste wire in the mixing process (S02) with a compatibilizer, the compatibilizer is ethylene propylene rubber (EPR) and styrene butadiene styrene (Styrene Butadiene Styrene; SBS) ) and chlorinated polyethylene (CPE) are mixed in a ratio of 3: 2: 1 and used.

In the mixing process (S02), in addition to the powder and compatibilizer of the waste wire put into the mixer, antioxidants, UV stabilizers, light stabilizers, plasticizers, flame retardants, heat stabilizers, mold release agents, processing aids, colorants, pigments, etc. It is preferable to add

The mixing ratio input to the mixer in the mixing step (S02) is 5 to 30 parts by weight of the compatibilizer and 5 to 10 parts by weight of the additive based on 100 parts by weight of the powder of the waste wire.

In the extrusion process (S03), when the mixture is put into the extruder and the extrusion temperature that is extruded and output is less than 150° C., the powder of the waste wire covering material does not melt well, so molding is not performed well, and the durability of the block-shaped body may be reduced. , Similarly, if the extrusion temperature exceeds 250 ℃, the durability of the block-shaped body may be reduced, so the extrusion temperature is preferably made in the temperature range of 150 ~ 250 ℃.

In the pressing process (S04), in the extrusion process (S03), an extrudate having an extrusion temperature of 150 to 250° C. is molded into a block-shaped body, and the microstructure is densely configured to improve elasticity and durability. Apply pressure so that 1.3 ~ 1.7.

In the cooling process (S05), it is preferable to cool the block-shaped body that has passed the pressing process (S04) to a temperature range of 50 to 80° C. by gradually lowering the temperature for 30 minutes to 1 hour.

The block manufactured by the present invention's method for manufacturing a plastic block using recycled electrical wire coverings has excellent adhesion, chemical stability, elasticity, water absorption and durability, does not cause whitening, and has excellent heat island response ability. Manufacturing cost is lower than that of general cement blocks, and since waste wire, which is industrial waste, is recycled and used as the main raw material, huge costs for waste wire treatment can be saved, which has many advantages in economic terms and also has an eco-friendly effect. .

1 is a flowchart of a method for manufacturing a plastic block using recycled wire coverings according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. A detailed description thereof is omitted.

And, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout this specification.

1 is a flowchart of the present invention, which will be described in detail with reference to FIG.

In the present invention, in the method for manufacturing a plastic block from recycled waste wire coating, the powdering process (S01) puts the waste wire coating, the main raw material, into a grinder and pulverizes it, and the mixing process (S02) is the waste that has gone through the powdering process (S01). The powder of the wire coating and the compatibilizer are put into a mixer and mixed, and the extrusion process (S03) is performed by injecting the mixture of the powder of the waste wire coating that has undergone the mixing process (S02) and the compatibilizer into the extruder and extruding, and the pressing process ( In S04), the extrudate from the extrusion process (S03) is put into a molding machine to form a block-shaped body, and the cooling process (S05) lowers the temperature of the block-shaped body that has undergone the pressing process (S04) and dries, The processing process (S06) processes the body that has passed the cooling process (S05), and the shipping process (S07) consists of a total of seven steps of packaging and shipping the body that has passed the processing process (S06).

In the pulverization process (S01), it is preferable to pulverize the coating stripped from the waste wire to a range of 1 to 10 mm using a pulverizer. The copper wire or iron core in the center of the waste wire is pulverized using a pulverizer. If the size of the resulting product is 10mm or more, the overall ductility after molding is weakened and can be easily worn. It cannot be applied as it is.

In the mixing step (S02), the coating powder obtained by pulverizing the coating of the waste wire is mixed with a compatibilizer.

The compatibilizer mixed with the coating powder is ethylene propylene rubber (EPR), styrene butadiene styrene (SBS) and chlorinated polyethylene (CPE) in a 3: 2: 1 ratio. use it

In particular, when mixing ethylene propylene rubber with styrene butadiene styrene and chlorinated polyethylene in a ratio of 3: 2: 1, chemical and mechanical properties as well as adhesion, elasticity and durability of the block were confirmed to be excellent.

The ethylene propylene rubber (EPR) is an amorphous polymer obtained by copolymerizing ethylene and propylene.

The chlorinated polyethylene (CPE) is a thermoplastic elastomer and is composed of a flexible elastic mid-block domain and a physically cross-linkable end-block domain serving as a hard segment.

In the mixing process (S02), in addition to the coating powder and compatibilizer of the waste wire injected into the mixer, additional additives include antioxidants, UV stabilizers, light stabilizers, plasticizers, flame retardants, heat stabilizers, mold release agents, processing aids, colorants, and pigments. It is preferable to input any one or more.

As described above, in mixing the coating powder of the waste wire with the compatibilizer and additives, these additives may be contained to an extent that does not interfere with the physical or mechanical properties of the block-shaped body manufactured by the manufacturing method of the present invention.

The body manufactured by the present invention has a compressive strength of 30 MPa or more, a water absorption rate of 3% or less, durability, should have excellent freeze-thaw resistance, and should have excellent weather resistance, no whitening, and heat island response with water permeability It is desirable to manufacture it so as to secure water-retaining performance.

In addition, since the main raw material of the body of the present invention is recycled covering of waste wires, it is characterized in that the block can be manufactured at a much lower cost than the manufacturing cost of general calcined clay blocks and cement blocks.

It is characterized in that 5 to 30 parts by weight of the compatibilizer and 5 to 10 parts by weight of the additive are based on 100 parts by weight of the powder of the waste wire input to the mixer in the mixing process (S02).

In the extrusion process (S03), the mixture mixed in the mixing process (S02) is put into the extruder, and when the extrusion temperature output by extrusion is less than 150°C, the powder of the waste electric wire covering material does not melt well, so molding is not performed well and it is in a block form The durability of the phosphor body may decrease, and similarly, if the extrusion temperature exceeds 250 ° C., the durability of the block-type body may decrease.

In the pressing process (S04), in the extrusion process (S03), an extrudate having an extrusion temperature of 150 to 250°C is molded into a block-shaped body, and the microstructure is densely configured to improve strength and durability. Apply pressure so that is 1.3 ~ 1.7.

In the cooling process (S05), it is preferable to cool the block-shaped body that has passed the pressing process (S04) to a temperature range of 50 to 80° C. by gradually lowering the temperature for 30 minutes to 1 hour.

The processing step (S06) is to classify the good and defective products of the block-type body that have passed the cooling step (S05), and remove the stenosis attached to the block-type body and process, and the generated dust is removed using a dust collector. .

In the shipping process (S07), the block-shaped body that has undergone the processing process (S06) is packaged and shipped to suit the user's discretion.

In the present invention, the above embodiment is an example, and the present invention is not limited thereto. Anything that has substantially the same configuration as the technical idea described in the claims of the present invention and achieves the same effect is included in the technical scope of the present invention.

Claims (6)

In the manufacturing method of a plastic block using a waste wire covering,
A powdering process (S01) of putting the main raw material of the waste wire coating into a grinder and pulverizing it to a range of 1 to 10 mm;
With respect to 100 parts by weight of the powder of the waste wire coating that has undergone the powdering process (S01), ethylene propylene rubber (EPR), styrene butadiene styrene (Styrene Butadiene Styrene; SBS) and chlorinated polyethylene (CPE) Any one of antioxidants, UV stabilizers, light stabilizers, plasticizers, flame retardants, heat stabilizers, mold release agents, processing aids, colorants, and pigments as an additive and 5 to 30 parts by weight of a compatibilizer mixed in a ratio of 3: 2: 1 or a mixing process (S02) of mixing two or more into a mixer of 5 to 10 parts by weight;
an extrusion process (S03) of transferring a mixture of the powder of the waste wire coating, a compatibilizer, and an additive that has undergone the mixing process (S02) to an extruder and extruding it at 150 to 250°C;
a pressing (S04) of forming a block with a density of 1.3 to 1.7 of the mixture that has undergone the extrusion process;
a cooling process (S05) of cooling the pressed block at 50 to 80° C. for 30 minutes to 1 hour;
a machining process (S06) of processing the block that has undergone the cooling process (S05);
a shipping step (S07) of packaging and shipping the blocks that have passed the processing step (S06); A method of manufacturing a plastic block using recycled wire coverings, characterized in that it consists of
delete delete delete With respect to 100 parts by weight of the powder of the waste wire which was put into a grinder and pulverized to a range of 1 to 10 mm, ethylene propylene rubber (EPR), styrene butadiene styrene (SBS) and 5 to 30 parts by weight of a compatibilizer mixed with chlorinated polyethylene (CPE) in a ratio of 3: 2: 1 and additives, antioxidant, UV stabilizer, light stabilizer, plasticizer, flame retardant, heat stabilizer, mold release agent, processing Any one or two or more of the auxiliary agent, colorant, and pigment is put in 5 to 10 parts by weight of a mixer, mixed, and then transferred to an extruder to extrude the extrudate in a block form at 150 to 250° C. so that the density is 1.3 to 1.7. 30 Recycled plastic block of waste wire covering, characterized in that it is cooled to 50 ~ 80 ℃ for minutes ~ 1 hour.
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