KR101515185B1 - The excellent shock absorption, heat resistance and non-slip elastic paving material and a method of manufacturing the same - Google Patents

Abstract

The present invention relates to an elastic paving material with excellent shock absorption, heat resistance, and non-slip functions and a method of manufacturing the same, and, more specifically, to an elastic paving material with excellent shock absorption, heat resistance, and non-slip functions and a method of manufacturing the same which can prevent a film crack, delamination, peeling-off, and the like by minimizing deterioration phenomena even in an environment exposed to infrared ray or a heat source by using a coating solution containing nano metal oxide with an excellent thermal blocking property, and additionally, has excellent durability, adhesiveness, chemical resistance and can be cured at a room temperature with a quick drying property since the material is manufactured using rubber powder of core shell structure containing silica ball, which is a silica nano particle.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic packaging material excellent in impact absorbability, heat resistance, and slip prevention function, and a method of manufacturing the same.

More particularly, the present invention relates to an elastic packaging material excellent in shock absorption, heat resistance and slip prevention function, and more particularly, to a coating material containing nano-metal oxide excellent in heat resistance, so that even in an environment exposed to ultraviolet rays or heat It is possible to prevent cracking, peeling, peeling and peeling of the coating film by minimizing the deterioration phenomenon. Since the rubber powder of the core shell structure is used and the coating liquid is coated thereon, it is excellent in durability, adhesive strength, chemical resistance, To an elastic packaging material excellent in impact absorbability, heat resistance and slip prevention function which can be cured with quick drying property, and a manufacturing method thereof.

Recently, the amount of waste of synthetic rubber waste including waste synthetic resin has been increasing in Korea due to the development of automobile industry and the diversification of waste tires, industrial materials and daily necessities caused by a surge in demand.

Even if these wastes are landfilled, they will not be easily decomposed even after decades, and the soil will be polluted and the function of the soil as a recirculation system will be lost. Organic waste will be secondarily polluted if it is incinerated. The problem is serious.

As a solution to this problem, the waste tires are attached and fixed in the shape of a circle in the edge of a ship, a dock wall of a port or a marina, a road structure, etc., and used as a buffer member. It is used as an elastic packing material for various exercise coats in parks and parks. For more efficient use, waste tires are cut into a certain size and dipped in a hydrogen peroxide dilution solution, treated with high heat and high pressure to eliminate vulcanized rubber characteristics, (Raw material rubber) is imparted to the unhardened rubber (raw material rubber).

Such elastic pavement is applied to an elastic pavement, and rubber elastic material is applied to the road surface to cushion shocks applied to the human body during walking or inadvertently falling, Playground facilities and various sports facilities.

As conditions for providing the elastic package, there is a demand for shock absorbability, durability and weatherability, ease of maintenance and environmental friendliness, and the like, which are characteristic of elastic packaging and are advantageous have.

In the bottom pavement such as a sidewalk, a bicycle road, a park walkway, etc., a block pavement method in which concrete or asphalt pavement or various blocks such as stone, brick, cement and wood are laid on the surface layer is used. A packaging method using a tire is widely used.

Especially, safety is the most important for children 's playground. In order to prevent safety accidents, the shock absorptance is good. In order to prevent slippage, sand is laid over a certain thickness.

In order to solve these problems, it has been recently applied to a polyurethane resin, an ethylene propylene diene monomer (EPDM) chip, a waste tire chip, a reclaimed rubber chip, and the like in the case of a flooring such as a walkway of a sidewalk, The use of materials to increase the overall surface elastic packaging material.

However, since the elastic packing material produced by using the composite material has sufficient elasticity to the floor, the walking feeling of the pedestrian is improved, and the impact is alleviated to prevent the occurrence of safety accidents. However, Packaging materials were harmful to human body by releasing harmful substances such as recycled materials such as waste tire chips and recycled rubber chips, EPDM chips, and volatile organic compounds (VOCs), which are harmful to human body in terms of resource recycling. Especially, And the like. Further, the conventional elastic flooring materials, which are formed by bonding together composite materials having different properties such as polyurethane resin, EPDM chip, waste tire chip, and recycled rubber chip, are low in adhesiveness with each other and are packed on the floor, And it is difficult to use it.

In addition, under the environment exposed to light (ultraviolet rays) or heat against the sunlight, the coating film itself is deteriorated to cause problems such as cracks on the coating film, lifting and peeling, and the maintenance thereof is considerably difficult. . Therefore, it is necessary to develop a packaging material with heat-shielding performance to prevent heat transfer by radiation heat and to prevent heat absorption on the pavement surface. Also, it is necessary to develop an elastic packaging material that can be cured at room temperature quickly so as to minimize traffic control time after packaging materials are applied.

1. Korean Patent Publication No. 10-2013-0128222 (November 26, 2013) 2. Korean Patent No. 10-0331789 (Apr. 9, 2002)

It is an object of the present invention to solve the problems of the prior art as described above, and it is an object of the present invention to provide a coating solution containing nano metal oxide having excellent heat- It is desired to provide an elastic packaging material excellent in impact absorbability, heat resistance, and slip prevention function by using rubber powder having a core shell structure containing silica balls as silica nanoparticles, which can prevent cracking, lifting and peeling, and a manufacturing method thereof .

Further, the object of the present invention is to provide a rubber composition which is excellent in durability, adhesive strength, chemical resistance, and the like, and is excellent in impact absorbability, And a method of manufacturing the same.

In order to attain the above object, the present invention provides an elastic packaging material excellent in shock absorption, heat resistance and anti-slip function, and a method of manufacturing the same, comprising the steps of: preparing rubber powder having a core shell structure; A step S20 of providing a coating liquid containing a nano-metal oxide; And 10 to 15 parts by weight of the coating solution based on 100 parts by weight of the core-shell rubber powder is stirred at 60 to 80 ° C. for 1 to 5 hours. In the step S 10, S11; A step S12 of providing a two-component type resin; Mixing 20 to 60 parts by weight of the nano-metal oxide with 25 to 50 parts by weight of the solvent, and mixing the rubber powder with 60 to 80 ° C Stirring the mixture for 1 to 5 hours to form a gel-type nano-metal oxide; mixing the gel-type nano-metal oxide with 2 to 15 parts by weight of a dispersing agent and stirring the mixture; And step S23 in which the mixture is stirred and mixed.

In the elastic packaging material excellent in impact absorbability, heat resistance and anti-slip function according to the present invention, and the method for producing the same, the two-pack type resin is a mixture of MMA (methyl methacrylate) resin BA (n-butyl acrylate) By weight.

In the elastic packaging material excellent in impact absorbing property, heat resistance and slip prevention function according to the present invention, and a method of manufacturing the same, step S12 is a step of forming silica balls, which are 1 to 5% by weight of silica nanoparticles based on the total weight of the two- And mixing the resultant mixture.

In addition, in the elastic packaging material excellent in impact absorbing property, heat resistance and anti-slip function according to the present invention, and a method for producing the same, the nano metal oxide may be WO ₃ , TiO ₂ having a particle size of 30 to 450 nm or a combination thereof .

In the elastic packaging material excellent in impact absorbing property, heat resistance and anti-slip function according to the present invention, and the method for producing the same, the solvent is methanol or butylene glycol, and the dispersant contains 500 to 640 weight parts of alkylammonium salt And the binder is a urethane resin.

According to the elastic packaging material and the method of manufacturing the same, which are excellent in shock absorption, heat resistance and slip prevention function proposed in the present invention, by using a coating liquid containing a nano metal oxide excellent in heat resistance, even in an environment exposed to ultraviolet rays or heat, Thereby preventing coating film cracking, peeling, peeling, and the like.

According to the present invention, there is provided an elastic packaging material excellent in shock absorbing property, heat resistance and anti-slip function, and a method of producing the same, wherein rubber powder having a core shell structure containing silica balls as silica nanoparticles is used, , It is excellent in durability, adhesive strength, chemical resistance, and can be cured at room temperature and fast drying.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a process drawing showing each step of a method of manufacturing an elastic packaging material excellent in impact absorbability and heat resistance and slip prevention function according to the present invention. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the terms described below are defined in consideration of the functions of the present invention, and these may vary depending on the intention of the user, the operator, or the precedent. Therefore, the definition should be based on the contents throughout this specification.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a process drawing showing each step of a method of manufacturing an elastic packaging material excellent in impact absorbability and heat resistance and slip prevention function according to the present invention. Fig.

Referring to FIG. 1, a method of manufacturing an elastic packaging material having shock absorbing properties, heat resistance, and anti-slip performance according to the present invention includes steps of: preparing rubber powder having a core shell structure; preparing a coating liquid containing a nano- Step S20, and S30 step of mixing 10 to 15 parts by weight of the coating solution based on 100 parts by weight of the core-shell rubber powder and stirring at 60 to 80 DEG C for 1 to 5 hours. Since the elastic packaging material manufactured according to the method of manufacturing the elastic packaging material of the present invention contains the coating liquid having excellent heat shielding performance, it is possible to prevent cracks, lifting and peeling due to deterioration phenomenon of the coating film itself under the environment exposed to sunlight containing high- And the like can be prevented.

Steps S10 to S30 will be described in detail below.

First, Step S10 of the present invention is to prepare a rubber powder having a core shell structure. Step S11 of providing a rubber powder, Step S12 of preparing a two-component type resin, Step 2 of preparing a two- ≪ / RTI > to about 10 parts by weight of < RTI ID = 0.0 > In the present invention, the rubber powder having a core shell structure means a structure in which a rubber powder is used as a core and a two-component type resin is coated on the surface of the rubber powder.

The rubber powder is made of urethane, EPDM (ethylene propylene diene monomer), and waste tire (SBR-NBR, SBR-BR) and has a particle size of 1 to 4 mm or 5 to 8 mm. But is not limited thereto.

The two-component type resin may be prepared by mixing MMA (methyl methacrylate) resin BA (n-butyl acrylate) resin.

By coating the two-component resin mixed with the MMA (methyl methacrylate) resin BA (n-Butyl Acrylate) resin on the rubber powder, resistance to chloride ion penetration is increased by 1.5 times as much as that of uncoated rubber powder The chemical resistance is increased and the weatherability and durability are greatly improved.

Particularly, the two-component type resin can be exemplified by mixing MMA (methyl methacrylate) resin BA (n-butyl acrylate) resin at a weight ratio of 1: 0.8 to 1.2, more preferably 1: It has the best chemical and coating properties (adhesion).

Meanwhile, the step S12 may further include a step of mixing silica balls, which are silica nanoparticles, into the two-component type resin.

When the two-component type resin is coated with the silica powder in the state where the silica balls are mixed, the effect of improving the heat insulating property by the silica balls dispersed on the surface of the rubber powder can be expected.

The silica balls are preferably mixed in an amount of 1 to 5% by weight based on the total weight of the two-component type resin.

If the amount of the silica balls is less than 1% by weight, it is difficult to sufficiently exhibit the above-mentioned heat insulating performance. If the amount of the silica balls is more than 5% by weight, dispersion of the silica balls becomes difficult, and aggregation may occur during mixing. The use of a dispersing agent of the present invention may weaken the coating strength and weaken the coating performance such as a coating film failure.

In the step S13, 2 to 10 parts by weight of the two-component type resin is mixed based on 100 parts by weight of the rubber powder. If the amount of the two-component type resin is less than 2 parts by weight, even if the mixture is stirred for a sufficient time, If it exceeds 10 parts by weight, the coating film becomes unnecessarily thick and causes an increase in the manufacturing cost.

Next, step S20 of the present invention is to prepare a coating solution containing a nano-metal oxide. Specifically, 30 to 60 parts by weight of a nano-metal oxide and 25 to 50 parts by weight of a solvent are mixed and heated at 60 to 80 ° C for 1 to 5 hours S21 step of mixing the gel-type nano-metal oxide with 2 to 15 parts by weight of the dispersing agent at room temperature and stirring, and 15 to 25 parts by weight of the binder are mixed with each other to prepare a gel- And step S23 of stirring.

The nano-metal oxide serves to reduce the deterioration phenomenon of the coating film itself in an environment exposed to ultraviolet rays or heat by maximizing the effect of heat shielding or heat insulation. WO ₃ (tungsten oxide) having a particle size of 30 to 450 nm, TiO ₂ Titanium).

The nano metal oxide may be exemplified by a combination of WO ₃ (tungsten oxide) and TiO ₂ (titanium oxide).

For example, even if WO ₃ (tungsten oxide) or TiO ₂ (titanium oxide) is used singly, the effect of heat shielding can be expected, but it is difficult to expect a photocatalyst to act. However, The obtained Ti / WO 3 particles have the advantage of being able to act as a photocatalyst for visible light as well as ultraviolet light.

More specifically, since WO ₃ (tungsten oxide) or TiO ₂ (titanium oxide) serves only as a photocatalyst in a strong ultraviolet region and does not act as a photocatalyst in a visible light region, Ti / WO ₃ nanoparticles are more preferably used.

As described above, by performing the photocatalytic action on the wide region of the nano-metal oxide, it becomes possible to more efficiently oxidize and decompose the noxious substance.

The solvent may be an ester having an ROR 'structure or a compound containing an ether having an ROR' structure, or R and R 'may be methanol or butylene glycol having an ether group substituted with hydrogen or carbon, , The concentration of the coating liquid is too high to disperse nano metal oxides properly and it is difficult to form a uniform coating. When the amount of the coating liquid is more than 50 parts by weight, the coating becomes thin and the adhesive force is weakened. Do.

The dispersant may be a surfactant composed of a functional group capable of adsorbing to the nano-metal oxide and a carbon chain of any one of alkyl (-R) and alkoxy (-OR). More specifically, And 500 to 640 parts by weight of an alkylammonium salt based on 100 parts by weight of the component (A).

In addition, the dispersant may be 2-2-2-methoxyethoxy ethoxy acetic acid.

The binder provides an adhesive force, and may be a urethane resin.

Next, the step S30 of the present invention is a step of mixing 10 to 15 parts by weight of the coating solution based on 100 parts by weight of the core-shell rubber powder, and the mixture is preferably stirred at 60 to 80 ° C for 1 to 5 hours.

If the step S30 is performed at a temperature lower than 60 DEG C for less than 1 hour, the fluidity of the coating liquid is lowered and the elastic packaging material and the coating liquid are not smoothly adhered. If the temperature exceeds 80 DEG C and stirring is performed for 5 hours or more, unnecessary energy consumption is inefficient .

It is needless to say that the SPD-KSSFIA1-1944 regulation prescribed for the flooring for on-site play facilities for children's play facilities can be taken into consideration for the concrete construction method and construction specifications regarding the elastic packaging material of the present invention.

In addition, there are no specific limitations on the methods of construction of school sports facilities, playground facilities, and various methods based on the provisions of KS F 3888-2 can be considered for construction of school sports facilities - playground facilities.

Among the many construction methods, in the case of on-site installation, a curing agent such as benzoyl peroxide (BPO), methyl ethyl ketone peroxide (MEK PO), and diacid peroxide is added to the total weight of the elastic packaging material manufactured through steps S10 to S30 1 to 2% by weight of iron oxide (DCP) and 15 to 25% by weight of a urethane resin as a binder are mixed and then placed on a construction surface and then cured at room temperature. Since the elastic packaging material thus constructed has a slip prevention performance, a chemical resistance, a durability and a heat differential performance, it has a function of excellent heat stability, and it is possible to secure early strength to allow passage within a construction time, and to provide sufficient elasticity and durability So that it can be achieved in a short time.

Hereinafter, the method of manufacturing the elastic packaging material according to the present invention will be described in more detail with reference to preferred embodiments.

1) MMA (methyl methacrylate) resin and BA (n-butyl acrylate) resin containing silica balls as silica nanoparticles were mixed at a weight ratio of 1: 1 with respect to 100 parts by weight of urethane rubber powder having a particle size of 1 to 4 mm 5 parts by weight of a two-component type resin were mixed and stirred at 70 DEG C for 2 hours to prepare a rubber powder having a core shell structure.

2) 50 parts by weight of WO ₃ as a nano-metal oxide and 30 parts by weight of butylene glycol as a solvent were mixed and stirred at 70 ° C for 2 hours, and then 5 parts by weight of a dispersant and 20 parts by weight of a urethane resin were sequentially added, To prepare a coating liquid.

3) 100 parts by weight of the rubber powder of 1) and 12 parts by weight of the coating solution are mixed to prepare an elastic packaging material.

[ Comparative Example 1 ]

In Example 1, an elastic packaging material was prepared in the same manner as in Example 1, except that it was an MMA single resin instead of the two-pack type resin.

[ Comparative Example 2 ]

An elastic packaging material was prepared in the same manner as in Example 1, except that the rubber powder not coated with the two-part type resin was used instead of the core-shell rubber powder in the step 1) of Example 1.

[ Comparative Example 3 ]

The elastic packaging material is prepared in the same manner as in Example 1, except that the coating liquid is 8 parts by weight in the step 3) of Example 1.

2 parts by weight of a curing agent (BPO) and 20 parts by weight of a urethane binder were added to 100 parts by weight of the elastic packaging material prepared in Example 1 and Comparative Examples 1 to 3, and the mixture was placed on the floor to be applied, .

In order to investigate the physical properties of the elastic packaging materials, the tensile strength (MPa) at 15 days and the elongation at 15 days (%) were derived from numerical values. Slip resistance (BPN), adhesive strength (MPa) (MPa) was obtained by numerical calculation. The degree of acid resistance was tested (JIS K 5400) by immersing the specimen in an aqueous solution of 50 g / L of H ₂ SO ₄ for 24 hours at room temperature to visually observe the degree of change with respect to the action of the acid. In addition, the specimens were immersed in an aqueous solution of 50 g / L of NaOH for 24 hours at room temperature to examine the degree of alkalinity (see EN 1279-2) The cycle was maintained for a total of 168 hours with a cycle of 12 hours, followed by visually observing the degree of change. In the acid resistance, alkali resistance and heat resistance repeated test, the state of the surface is shown as stable, the case where the surface is peeled is indicated by " DELTA ", and the case where the surface is peeled is indicated by " x "

division The tensile strength
(MPa) Elongation rate
(%) Shock absorption
(%) Vertical deformation (mm) Slip resistance (BPN) Tensile stress
(MPa) Thermal conductivity
(W / mK) Chemical resistance Example 1 3.2 97 38 0.78 78 0.51 0.97 ○ Comparative Example 1 2.4 86 41 0.81 65 0.46 1.14 △ Comparative Example 2 2.1 83 41 1.74 67 0.48 1.08 △ Comparative Example 3 1.8 81 44 1.25 58 0.46 1.29 ×

As can be seen from the above Table 1, the elastic packaging material according to the present invention is superior in terms of tensile strength, elongation, impact absorbing property and tensile stress as compared with Comparative Examples 1 to 3, and also has excellent sliding resistance, chemical resistance Acid resistance, and alkali resistance) are also excellent.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims (6)

Providing a rubber powder having a core shell structure;
A step S20 of providing a coating liquid containing a nano-metal oxide;
S30, wherein 10 to 15 parts by weight of the coating solution is mixed with 100 parts by weight of the core-shell rubber powder and stirred at 60 to 80 ° C for 1 to 5 hours.
In the step S10,
(S11) of preparing a rubber powder;
A step S12 of providing a two-component type resin;
And 2 to 10 parts by weight of a two-component type resin based on 100 parts by weight of the rubber powder,
In operation S20,
S21 step of mixing 30 to 60 parts by weight of a nano-metal oxide with 25 to 50 parts by weight of a solvent and stirring at 60 to 80 DEG C for 1 to 5 hours to form a gel-type nano-metal oxide; (S22) of mixing and stirring the metal oxide with 2 to 15 parts by weight of the dispersing agent, and (S23) mixing and stirring the binder by 15 to 25 parts by weight,
Wherein the metal oxide is composed of Ti / WO ₃ having a particle size of 30 to 450 nm and is configured to act as a photocatalyst in a visible light region, and a method for manufacturing an elastic packaging material having excellent shock absorbing property, heat resistance and slip prevention function.
The method according to claim 1,
Wherein the two-component type resin is manufactured by mixing MMA (methyl methacrylate) resin BA (n-butyl acrylate) resin at a weight ratio of 1: 0.8 to 1.2, and a method of manufacturing an elastic packaging material excellent in impact absorbability, heat resistance and anti- .
3. The method of claim 2,
The step S12 further comprises a step of mixing silica balls, which are 1 to 5% by weight of silica nanoparticles, based on the total weight of the two-component type resin. Way. delete The method according to claim 1,
Wherein the solvent is methanol or butylene glycol,
The dispersant is prepared by mixing 500 to 640 parts by weight of an alkylammonium salt based on 100 parts by weight of nitric acid,
Wherein the binder is a urethane resin, and is excellent in shock absorption property, heat resistance and slip prevention function.
The elastic packaging material according to claim 1, wherein the elastic packaging material is excellent in impact absorbability and heat resistance and slip prevention function.

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