KR20200103247A - Coated asphalt pellet composition and method for making same - Google Patents

Abstract

The present invention relates to a coated asphalt pellet composition and a manufacturing method thereof, and more particularly, by coating a coating polymer on the surface of asphalt, it is possible to reduce the change in physical properties of asphalt due to continuous heating required during asphalt molding, and ease of storage and storage The present invention relates to a coated asphalt pellet composition and a method of manufacturing the same, which can reduce manpower and cost by improving stability and being easy to use, thereby shortening the manufacturing process and time.
To this end, the present invention includes: a) a thermoplastic resin having a weight average molecular weight of 6,000 to 500,000, a thermoplastic elastomer having a weight average molecular weight of 6,000 to 500,000, and a hydrocarbon-based petroleum having a weight average molecular weight of 100 to 10,000. A coating polymer mixed with at least one selected from among chemical resins, copolymers with a weight average molecular weight of 6,000 to 500,000, and synthetic rubbers with a weight average molecular weight of 6,000 to 500,000, b) Asphalt with a penetration of less than 300 dmm , Natural asphalt, oxidized asphalt, modified asphalt, but mixed with a coating object selected from recycled asphalt, formed by mixing 0.01 to 20 Wt% of the coating polymer and 80 to 99.99 Wt% of the coating object, and the coating polymer of a) In, the thermoplastic resin is one selected from polyethylene, polypropylene, polystyrene, nylon, acrylic, and vinyl chloride, and the thermoplastic elastomer is TPES (Styrenic block copolymers), TPO (Thermoplastic polyolefin elastomers), TPV (Thermoplastic Vulcanizates), TPU (Thermoplastic polyurethanes), TPC (Thermoplastic copolyester), TPA (Thermoplastic polyamides), TPZ (Not classified thermoplastic elastomers), and the hydrocarbon-based The petrochemical resin is one selected from C5 and C9, and the copolymer is ABS resin (Acrylonitrile butadienestyrene), SBR (Styrene/butadiene copolymer), SB S (Styrene butadienestyrenecopolymer), NBR (Nitrile butadienerubber), SAN (Styrene-acrylonitrile), SIS (Styrene-isoprene-styrene), EVA (Ethylene-vinyl acetate), the synthetic rubber is a natural rubber (Natural rubber). ) And polybutadiene (Butadiene rubber), polyisoprene (Polyisoprene), butyl rubber (Isobutylene-isoprene rubber), polychloroprene rubber (polychloroprene rubber) is characterized in that one selected from.

Description

Coated asphalt pellet composition and method for making same}

The present invention relates to a coated asphalt pellet composition and a manufacturing method thereof, and more particularly, by coating a coating polymer on the surface of asphalt, it is possible to reduce the change in physical properties of asphalt due to continuous heating required during asphalt molding, and ease of storage and storage The present invention relates to a coated asphalt pellet composition and a method of manufacturing the same, which can reduce manpower and cost by improving stability and being easy to use, thereby shortening the manufacturing process and time.

Asphalt is a residue when most of the volatile oil components of petroleum crude oil have evaporated. It has a black or black brown color and is mainly composed of oxygen and carbon, and is composed of a compound that combines a small amount of nitrogen, sulfur, and oxygen. It has an extremely complex structure, and there are many things that have not yet been revealed.

These asphalts are naturally produced and artificially produced from petroleum. The former is called natural asphalt and the latter is called petroleum asphalt, and petroleum asphalt has fewer impurities than natural asphalt and its properties can be adjusted appropriately according to the purpose of use. Most of the currently used is petroleum asphalt.

Asphalt becomes liquid when the temperature is high, and becomes very hard at low temperature, and this temperature sensitivity varies depending on the type of asphalt, and it has abundant plasticity, waterproofness, electrical insulation, and adhesion. The back is big. In addition, when 5-6% of asphalt is mixed with crushed stone, sand, stone powder, etc., it becomes hard and tenacious, so it can be used as a flooring material such as road paving material or asphalt tile.

Such asphalt is a viscoelastic material and exhibits Newtonian behavior above about 110°C, but becomes solid at room temperature or below about 60°C. Asphalt products have the characteristics of sticking to each other, and for transport and pumping It needs heating above 110℃.

Here, since it is necessary to ensure the fluidity of the asphalt during the process of transporting asphalt, a dedicated tank lorry that can be heated to about 110 ~ 160℃ and a dedicated transport asphalt ship are needed. This results in transport costs required for transport and energy required for heating. There is a problem in that the cost of use increases, and furthermore, as the distance to the transaction destination increases during import/export, the cost required for transportation increases rapidly, which leads to an increase in logistics costs and eventually weakens competitiveness.

On the other hand, there is a Republic of Korea Patent Registration No. 10-1240540 (2013.02.28., registered), there has been proposed a method for allowing room temperature storage and room temperature transport.

However, in the prior art, the aggregate is coated with asphalt and filler through an indirect heating mixer, cooled to room temperature, stored indoors or in a silo, or stored in a ton bag or plastic bag, and transported to the site if necessary, and then returned to the indirect heating mixer. It is to be used by heating, and there is a problem of continuously weakening the original physical properties by causing oxidation and aging of the asphalt itself during at least two heating processes.

0001. Korean Patent Registration No. 10-1240540 (2013.02.28., registered)

The present invention is proposed in order to solve the above problems, by coating a coating polymer on the surface of asphalt, it is possible to reduce the change in physical properties of asphalt due to continuous heating required for asphalt molding, and to prevent the phenomenon that the asphalt composition clumps together. An object of the present invention is to provide a coated asphalt pellet composition with improved ease of use and a method of manufacturing the same.

In order to achieve the above object, the present invention is a) a thermoplastic resin having a weight average molecular weight of 6,000 to 500,000 (Thermo plastic), a thermoplastic elastomer having a weight average molecular weight of 6,000 to 500,000, and a weight average molecular weight of 100 to 10,000. A coating polymer mixed with at least one selected from among phosphorus hydrocarbon-based petrochemical resins, copolymers with a weight average molecular weight of 6,000 to 500,000, and synthetic rubbers with a weight average molecular weight of 6,000 to 500,000, b) invasion Mixing a coating object selected from among asphalt of 300 dmm or less, natural asphalt, oxidized asphalt, modified asphalt, and recycled asphalt, but formed by mixing 0.01 to 20 Wt% of the coating polymer and 80 to 99.99 Wt% of the coating object, and the In the coating polymer of a), the thermoplastic resin is one selected from polyethylene, polypropylene, polystyrene, nylon, acrylic, and polyvinyl chloride, and the thermoplastic Elastomers are selected from TPES (Styrenic block copolymers), TPO (Thermoplastic polyolefin elastomers), TPV (Thermoplastic Vulcanizates), TPU (Thermoplastic polyurethanes), TPC (Thermoplastic copolyester), TPA (Thermoplastic polyamides), and TPZ (Not classified thermoplastic elastomers). , The hydrocarbon-based petrochemical resin is one selected from C5 and C9, and the copolymer is ABS resin (Acrylonitrile butadienestyrene), SBR (Styrene/butadiene co polymer), SBS (Styrene butadienestyrene copolymer), NBR (Nitrile butadienerubber), SAN (Styrene-acrylonitrile), SIS (Styrene-isoprene-styrene), EVA (Ethylene-vinyl acetate), and the synthetic rubber is natural Rubber (Natural rubber), polybutadiene (Butadiene rubber), polyisoprene (Polyisoprene), butyl rubber (Isobutylene-isoprene rubber), it is characterized in that one selected from polychloroprene rubber (polychloroprene rubber).

In addition, titanium dioxide, inorganic fillers, colorants, plasticizers, antioxidants, anti-aging agents, vulcanization accelerators, surfactants, fluidity improvers, viscosity modifiers, and peeling inhibitors are 0.1 to 20 Wt% in the coating polymer of a) above to improve coating stability. It is characterized by being mixed.

In addition, the coating polymer is coated to a thickness of 50mm or less on the surface of the coating object, and the coating object coated with the coating polymer is formed to have a diameter of 50Cm or less.

And, a) stirring and mixing a coating polymer in which at least one selected from among a thermoplastic resin, a thermoplastic elastomer, a hydrocarbon-based petrochemical resin, a copolymer, and a synthetic rubber is mixed at a temperature of 50 to 300° C. for 10 hours or less; B) mixing a coating object selected from among asphalt, natural asphalt, oxidized asphalt, modified asphalt, and recycled asphalt having an intrusion of 300dmm or less at a temperature of 80 ~ 300℃ for 10 hours or less; C) molding the molten coating object through the step b) into a certain shape through a method selected from compression, injection, extrusion, injection, transfer, casting, slash, and 3D printing; D) releasing or separating the coating object molded in c); E) cooling the molded or separated coating object to have a temperature of 15 to 60°C through water cooling or air cooling; F) Coating the coating polymer formed through the step a) on the coating object cooled through the step e), but hot-melting the coating polymer on the surface of the coating object while maintaining the temperature of 15 ~ 300 ℃ Coating through a dry method; G) It characterized in that it provides a method for producing a coated asphalt pellet composition comprising the step of cooling the coated object to a temperature between 15 ~ 60 ℃ through a method of water cooling or air cooling.

In the present invention made as described above, the coating polymer is configured to be paved and transported while being coated on the surface of an asphalt pellet, that is, a coating object, thereby preventing the coating objects from sticking to each other and preventing deformation against external impact during transport. In addition to reducing it, there is an effect of increasing the resistance to deformation of the physical properties of asphalt.

In addition, by molding the coated object into pellets having a certain size, there is no need for additional processes of melting and subdivision required when using conventional products, thereby reducing the process. When mixed with other materials, the cross-sectional area due to the coating polymer increases. Melting and mixing time can be shortened, thereby increasing productivity, and minimizing lost pellets to reduce product cost and improve productivity, and thereby increase economic efficiency.

In addition, it does not require energy due to heating in the storage and transport process, so it is possible to save cost, and because it is easy to pack, it has the advantage of being able to pack in a variety of small and large quantities, and not only increases the storage period, but also is dedicated for long-distance transport. Since there is no need for equipment and heating energy, it is possible to reduce the cost of transportation and logistics, and there is an advantage of expanding the sales target area because there is no restriction on the transportation distance.

1 is an exemplary view showing a cut section of a coated asphalt pellet composition according to the present invention.
Figure 2 is an exemplary view showing an embodiment of a method for producing a coated asphalt pellet composition according to the present invention.
Figure 3 is an exemplary view showing another embodiment of a method for producing a coated asphalt pellet composition according to the present invention.
Figure 4 is an exemplary view showing another embodiment of a method for producing a coated asphalt pellet composition according to the present invention.

Hereinafter, other objects and features of the present invention in addition to the above objects will be clearly revealed through the description of the embodiments with reference to the accompanying drawings.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Hereinafter, with reference to the accompanying drawings to describe a preferred embodiment of the coated asphalt pellet composition and the manufacturing method according to the present invention.

1 shows a cut cross-section of a coated asphalt pellet composition according to the present invention, and a coating polymer 10 is coated on the surface of a coating object 20.

Here, the coating polymer 10 is a thermoplastic resin having a weight average molecular weight (Mw) of 6,000 to 500,000, thermoplastic elastomers having a weight average molecular weight of 6,000 to 500,000, and a weight average molecular weight. It is formed by mixing at least one selected from a hydrocarbon-based petrochemical resin of 100 to 10,000, a copolymer with a weight average molecular weight of 6,000 to 500,000, and a synthetic rubber with a weight average molecular weight of 6,000 to 500,000.

Looking at this in more detail, the thermoplastic resin is one selected from polyethylene, polypropylene, polystyrene, nylon, acrylic, and vinyl chloride,

The thermoplastic elastomer is selected from among TPES (Styrenic block copolymers), TPO (Thermoplastic polyolefin elastomers), TPV (Thermoplastic Vulcanizates), TPU (Thermoplastic polyurethanes), TPC (Thermoplastic copolyester), TPA (Thermoplastic polyamides), TPZ (Not classified thermoplastic elastomers). Is one,

The hydrocarbon-based petrochemical resin is one selected from C5 and C9,

The copolymer is ABS resin (Acrylonitrile butadienestyrene), SBR (Styrene/butadiene copolymer), SBS (Styrene butadienestyrene copolymer), NBR (Nitrile butadienerubber), SAN (Styrene-acrylonitrile), SIS (Styrene-isoprene-styrene), EVA ( Ethylene-vinyl acetate), and

The synthetic rubber is one selected from natural rubber, polybutadiene rubber, polyisoprene, isobutylene-isoprene rubber, and polychloroprene rubber.

The coating polymer mixed as described above acts as a barrier to prevent the asphalt to be coated from sticking to each other.In particular, since each material has higher hardness and higher tensile strength than asphalt, it is applied from the outside. It protects the asphalt from changing its shape by losing force.

In addition, the materials have a higher melting point than asphalt, which is a coating object, so that thermal deformation of the coating object can be protected from a maximum temperature of 80°C during transportation and storage.

Here, the thermoplastic resin, thermoplastic elastomer, and petrochemical resin serve to maintain the shape of the pellet with the high hardness, high tensile strength, and high melting point described above, and the copolymer and synthetic rubber have high elasticity (Elongation). It plays a role of absorbing and dispersing shocks and vibrations while being temporarily deformed and restored by shocks and vibrations transmitted from the outside.

On the other hand, titanium dioxide, inorganic fillers, colorants, plasticizers, antioxidants, antioxidants, vulcanization accelerators, surfactants, fluidity improvers, viscosity modifiers, and peeling inhibitors may be further added to the coating polymer to improve coating stability. The weight is added in a weight of 0.01 to 20 wt% based on the total weight of the coating polymer.

Here, titanium dioxide, as titanium dioxide, reacts with oxygen when exposed to air to form a titanium dioxide film.It has a very high oxidizing power and a high hiding power, so it is insoluble in almost all solvents, but is a very stable material. It is non-toxic.

In addition, it is used as a sunscreen and cosmetics, and is used as an antibacterial agent, odor removal and disinfectant, and as a semiconductor material and solar cell and coating material.In the present invention, as described above, when exposed to air, it reacts with oxygen. Thus, coating stability can be improved by using the property of forming a titanium dioxide film.

The inorganic filler is added for heat resistance, elasticity, surface hardness, transparency, and the like, and may include inorganic metal oxide including at least one of zirconium, aluminum, germanium, titanium, or zinc, and silica.

The colorants are used to change the color in the manufacturing process, and are largely classified into natural and synthetic pigments, and depending on the type of concern and dissolving the pigment, oil-based colorants, alcoholic colorants, lacquer colorants, aqueous colorants and acids, It can be classified as a chemical colorant that dissolves dyes and pigments dissolved in water and chemicals such as alkalis and salts. The colorant used in the present invention may include a white pigment, a red pigment, a green pigment, and the like, but is not limited thereto.

The antioxidant is to prevent deterioration due to rancidity, and the antioxidant used in the present invention is preferably phenyl-beta-naphthylamine, aromatic amines, hydroquinone, etc., but is not limited thereto.

The anti-aging agent is for minimizing aging that occurs over time, and may be an aromatic amine-based, phenol-based, phosphorous ester-based compound, or a mixture thereof.

The vulcanization accelerator is used to shorten the reaction time or to reduce the amount of vulcanizing agent used, the surfactant is used to prevent the stripping phenomenon of the coating object, and the fluidity improver is used to prevent solidification even at a relatively low temperature. The viscosity modifier is used to control the viscosity of the coating polymer, and the peeling inhibitor is used to minimize peeling of the coating polymer from the coating object. Here, since the vulcanization accelerator, surfactant, fluidity improver, viscosity modifier, and peeling inhibitor are conventional, each detailed material is not particularly limited.

On the other hand, the coating object 20 is one selected from asphalt having a penetration of 300 dmm or less, natural asphalt, oxidized asphalt, modified asphalt, and recycled asphalt, wherein the penetration index (PI) is used to indicate the consistency of the asphalt. As an index measured as one of the empirical test methods, it is conducted at 25°C, which corresponds to the average temperature of the pavement in use, and through the measured value, the penetration index (PI), which is an index that confirms the temperature sensitivity of asphalt, is presented.

The range of penetration of 300 dmm or less used in the present invention is because when the penetration is greater than 300 dmm, strength and high temperature thermal stability are weakened due to excessive aromatic content. Therefore, one selected among asphalt, natural asphalt, oxidized asphalt, modified asphalt, and recycled asphalt with a penetration degree of 300dmm or less at 25°C is used as a coating object, more preferably a softening point of 100°C or higher, and penetration at 25°C. Is to be used with less than 100dmm.

Next, a method for preparing a coated asphalt pellet composition according to an embodiment of the present invention will be described with reference to FIGS. 2 to 4.

First, as shown in Figure 2, the method of manufacturing another coated asphalt pellet composition according to an embodiment of the present invention,

A) stirring and mixing a coating polymer obtained by mixing at least one selected from a thermoplastic resin, a thermoplastic elastomer, a hydrocarbon-based petrochemical resin, a copolymer, and a synthetic rubber at a temperature of 50 to 300° C. for 10 hours or less (S10);

B) mixing a coating object selected from among asphalt, natural asphalt, oxidized asphalt, modified asphalt, and recycled asphalt of less than 300dmm penetration at a temperature of 80 ~ 300 ℃ for 10 hours or less (S20);

C) molding the molten coating object through the step b) into a certain shape through a method selected from compression, injection, extrusion, injection, transfer, casting, slash, and 3D printing (S30);

D) the step of releasing or separating the coating object molded in c) (S40);

E) cooling the molded or separated coating object to have a temperature of 15 to 60° C. through water cooling or air cooling (S50);

F) Coating the coating polymer formed through the step a) on the coating object cooled through the step e), but hot-melting the coating polymer on the surface of the coating object while maintaining the temperature of 15 ~ 300 ℃ Coating through a dry method (S60);

And g) cooling the coated object on which the coating is completed to a temperature between 15 and 60°C through water cooling or air cooling (S70).

To explain the method in more detail, in step (S10) of the a), the selected material is mixed at a temperature of 50 to 300° C. for 10 hours or less, but the device used at this time is a tank stirrer, a fluid stirrer, a homogenizer, or A mobile stirrer or the like may be used, and it is preferable to mix for a maximum of 10 hours or less, but for a minimum of 10 minutes or more. That is, mixing for at least 10 minutes or more, but mixing for a maximum of 10 hours or less in order to prevent changes in physical properties of the input material, and more preferably for a minimum of 30 minutes to a maximum of 7 hours.

In the step (S20) of the above b), a coating object selected from among asphalt, natural asphalt, oxidized asphalt, modified asphalt, and recycled asphalt having an invasion of 300 dmm or less is mixed at a temperature of 80 to 300°C for 10 hours or less to form a molten state. It is a step, and in step b), the selected coating object is heated to form a liquid state, and it is preferable that stirring is simultaneously performed so that impurities contained in the coating object can be removed during heating. Any one selected from a stirrer, a homogenizer or a mobile stirrer may be used.

In the step (S30) of c), the molten coating object is molded into a certain shape, and the desired shape and the desired shape through one or two or more methods selected from compression, injection, extrusion, injection, transfer, casting, slash, and 3D printing. At this time, it is preferable that the maximum diameter of the coated object to be molded does not exceed 50 cm. This is because when the diameter exceeds 50 cm, the surface area is wide and coating is not easy, and the coating polymer is applied to the surface of the coating object. This is because there is a problem that it takes a long time to be attached and productivity is lowered. Meanwhile, since compression, injection, extrusion, injection, transfer, casting, slash, and 3D printing methods are known techniques, detailed descriptions of the present invention will be omitted.

And, by releasing or separating the coating object molded in a certain shape through the step c) in step (S40) of d), and the configuration required for release or separation is modified according to the selected method, Since the molding method selected in the step and the release or separation method related thereto are general, a detailed description will be omitted.

Step (S50) of e) is a step of cooling the molded or separated coating object to a constant temperature, and the coating object becomes a solid or semi-solid state at room temperature, where the coating object is kept in a state where it is not completely hard. Cool to have a temperature of ℃. That is, the object to be coated does not fall below 15℃ so that it does not become a completely solid state, and if it rises above 60℃, there is a problem that the transport container and the operator are burned during transportation, and also reacts with the coating polymer in the coating step described later. Therefore, it is desirable to maintain the temperature between 15 and 60°C because unnecessary chemical reactions occur or oxidation and evaporation by heat occur.

In step (S60) of f), the coating polymer is coated on the object to be coated, but a dry method of hot melting on the surface of the object to be coated is cooled to 15 to 60°C while the coating polymer is maintained at a temperature of 15 to 300°C. Is coated through. That is, the surface of the coating object is coated while the coating polymer maintains a relatively high temperature compared to the coating object.

Next, step (S70) of 4) is a step of cooling the coated object on which the surface coating has been completed to a temperature between 15 and 60°C through a method selected from water cooling or air cooling.

This is a step of lowering the surface temperature in which the temperature of the coating object during coating in the step bar) rises by the temperature of the coating polymer again.

The coating polymer is coated on the surface of the object to be coated through the manufacturing method as described above, whereby the object to be coated does not stick to each other, and impacts and heat from the outside are protected by the coating polymer to prevent deformation of the object to be coated. I can.

Therefore, there is no change in physical properties even during storage and long-time movement, and packaging is possible in small and large-capacity because it is easy to pack as much as necessary weight, and there is an advantage in that the convenience of operation is high and the process time is shortened to improve economic efficiency.

On the other hand, in the manufacturing method according to another embodiment of the present invention shown in FIG. 3, when compared with the embodiment shown in FIG. 2, steps a) and f) are converted to steps a-1) and f-1), respectively. I changed it.

That is, step (S11) of A-1),

In the process of mixing the coating polymer, a solvent or colloid mill is added at a temperature of 30 to 250° C. to make a water-soluble emulsion,

Step (S61) of the bar-1),

After preheating the water-soluble emulsified coating polymer through step A-1) at a temperature of 15 to 100°C, coating is performed on the surface of the object to be coated by any one of wet coating methods such as immersion, spraying, dip or 3D printing. .

That is, this is an embodiment of coating the coating polymer through a wet coating method such as immersion, spraying, dip or 3D printing on the surface of the object to be coated after water-soluble emulsion is formed.

On the other hand, the manufacturing method according to another embodiment of the present invention shown in Figure 4, when compared to the embodiment shown in Figure 2, steps a) and f) steps A-2) and f-2) respectively Changed to.

That is, step (S12) of A-2),

During the process of mixing the coating polymer, melt extrusion molding, T-die method, solution flexing method, calendar method, stretching to enable wrapping or encapsulation after melting at a temperature of 50 to 300°C for 6 hours or less The coating polymer is molded into a film through any one of a method such as a method or a lamination method,

The step (S62) of bar-2),

The coating polymer in the form of a film molded through the above step A-2) is coated at 15 to 100°C by any one of soft gelatin capsules (Single-piece gel encapsulation) or Hard capsules (Two-piece gel encapsulation). It is to coat the surface of the object by wrapping or encapsulating it. In other words, after molding the coating polymer into a film form, the surface of the object to be coated is wrapped or the object to be coated is coated in the form of a capsule disposed inside.

As described above, in the present invention, specific matters such as specific components, etc., and limited embodiments and drawings have been described, but this is provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , If a person of ordinary skill in the field to which the present invention belongs, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention is limited to the described embodiments and should not be defined, and all things that are equivalent or equivalent to the claims as well as the claims to be described later belong to the scope of the spirit of the present invention. .

10: coating polymer
20: coating object

Claims (2)

a) Thermoplastic with a weight average molecular weight of 6,000 to 500,000, Thermoplastic elastomers with a weight average molecular weight of 6,000 to 500,000, Hydrocarbon resin with a weight average molecular weight of 100 to 10,000 , A coating polymer mixed with at least one selected from a copolymer having a weight average molecular weight of 6,000 to 500,000, and a synthetic rubber having a weight average molecular weight of 6,000 to 500,000,
b) Mixing a coating object selected from among asphalt, natural asphalt, oxidized asphalt, modified asphalt, and recycled asphalt with a penetration of 300dmm or less,
The coating polymer is formed by mixing 0.01 ~ 20Wt% and the coating object 80 ~ 99.99Wt%,
In the coating polymer of a)
The thermoplastic resin is one selected from polyethylene, polypropylene, polystyrene, nylon, acrylic, and vinyl chloride,
The thermoplastic elastomer is selected from among TPES (Styrenic block copolymers), TPO (Thermoplastic polyolefin elastomers), TPV (Thermoplastic Vulcanizates), TPU (Thermoplastic polyurethanes), TPC (Thermoplastic copolyester), TPA (Thermoplastic polyamides), TPZ (Not classified thermoplastic elastomers). Is one,
The hydrocarbon-based petrochemical resin is one selected from C5 and C9,
The copolymer is ABS resin (Acrylonitrile butadienestyrene), SBR (Styrene/butadiene copolymer), SBS (Styrene butadienestyrene copolymer), NBR (Nitrile butadienerubber), SAN (Styrene-acrylonitrile), SIS (Styrene-isoprene-styrene), EVA ( Ethylene-vinyl acetate), and
The synthetic rubber is coated, characterized in that it is one selected from natural rubber, polybutadiene rubber, polyisoprene, isobutylene-isoprene rubber, and polychloroprene rubber. Asphalt pellet composition.
A) stirring and mixing a coating polymer obtained by mixing at least one selected from a thermoplastic resin, a thermoplastic elastomer, a hydrocarbon-based petrochemical resin, a copolymer, and a synthetic rubber at a temperature of 50 to 300° C. for 10 hours or less (S10);
B) mixing a coating object selected from among asphalt, natural asphalt, oxidized asphalt, modified asphalt, and recycled asphalt of less than 300dmm penetration at a temperature of 80 ~ 300 ℃ for 10 hours or less (S20);
C) molding the molten coating object through the step b) into a certain shape through a method selected from compression, injection, extrusion, injection, transfer, casting, slash, and 3D printing (S30);
D) the step of releasing or separating the coating object molded in c) (S40);
E) cooling the molded or separated coating object to have a temperature of 15 to 60° C. through water cooling or air cooling (S50);
F) Coating the coating polymer formed through the step a) on the coating object cooled through the step e), but hot-melting the coating polymer on the surface of the coating object while maintaining the temperature of 15 ~ 300 ℃ Coating through a dry method (S60);
G) Coated asphalt pellet composition manufacturing method including the step (S70) of cooling the coated object to a temperature between 15 ~ 60 ℃ through a method of water cooling or air cooling.

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