KR101144140B1 - Environmental-friendly elastic paving material and method of preparing the paving material - Google Patents

Abstract

PURPOSE: An environmentally-friendly elastic pavement material and a manufacturing method thereof are provided to continuously generate anions and far-infrared rays even under severe environment, such as high-temperature, snow, and rain. CONSTITUTION: A manufacturing method of an environmentally-friendly elastic pavement material is as follows. A mixture is prepared by adding 10-25 weight% of loess and 5-15 weight% of illite to 100 weight% of epoxy pre-polymer having amine groups. A polyurea binder resin is prepared by adding 50-100 weight% of aliphatic isocyanate compound to the mixture. The elastic pavement material is prepared by mixing one or more elastic bodies selected from EPDM, rubber latex, loess chips, and polyurethane chips with the polyurea binder resin.

Description

Environment-friendly elastic paving material and method of preparing the paving material}

The present invention relates to an environmentally friendly elastic packaging material and a method for manufacturing the same, and more particularly, to an environmentally friendly elastic packaging material and a manufacturing method thereof having good adhesion state and less detachment even after road paving.

Conventional walkways, trails and jogging paths, children's playgrounds, multi-purpose physical education facilities, such as sidewalks, bicycle paths, park trails, athletic roads, etc., using concrete mixed with inorganic stone and cement, or some color cones, pitchers Cones, ascones and the like have been used. Among them, concrete molded products have high strength and have a high impact on the ground, and concrete sidewalk blocks and color cones have weakness such as hardness, heat resistance and weather resistance, but they are easily damaged even by weak impact. The feeling of poetry is hard and the shock absorption is poor.

Elastic pavement containing waste polyurethane or waste tires and methods for constructing the same have been developed, and known conventional road pavement materials used materials such as epoxy or urethane. Such conventional road pavement material has the disadvantages such as the need for professional manpower during construction, difficulty in handling the material, generation of air pockets due to water vapor pressure generated from the base metal, falling off or falling out of the sphere, slippery surface, difficult to repair there was.

Korean Patent No. 10-0779230 discloses 30 to 50% by weight of water-soluble polymer including one of styrene butadiene rubber latex, acrylic emulsion and ethylene vinyl acetate emulsion, 10 to 15% by weight calcium carbonate and waste polyethylene based on 100% by weight. Disclosed is a road paving elastomer using a water-soluble polymer, characterized in that 40 to 45% by weight of an elastic foam in which terephthalate foam and waste urethane foam are mixed. Unlike the epoxy and urethane materials, the patent improves the workability and durability by using a water-soluble material, but there is a problem that it is not environmentally friendly.

Republic of Korea Patent No. 10-0916938 discloses an environment-friendly elastic packaging material is prepared by mixing the natural ocher together with water and water-based acid and homogeneously mixed with the cross-linked urethane acrylic emulsion. The patent introduced ocher to balance eco-friendliness and durability, but the ocher component is detached and detached from the construction site, and the effect of the ocher component is insignificant or worn by the harsh external environment. There was a disadvantage that the effect is reduced.

In order to solve the above problems, the present invention provides a method for producing an environmentally-friendly elastic packaging material that can be excellent in mechanical strength, excellent adhesion strength and visibility, eco-friendly and does not cause the desorption of ocher, so that anion and far-infrared generation effects can be maintained. For the purpose of

In addition, an object of the present invention is to provide an environmentally friendly elastic packaging material that is excellent in mechanical strength, excellent adhesion strength and visibility, environmentally friendly and does not occur the desorption phenomenon of ocher, so that anion and far infrared generation effect can be sustained.

In order to achieve the above object,

Adding 10 to 25 parts by weight of ocher and 5 to 15 parts by weight of illite to 100 parts by weight of an epoxy prepolymer having an amine group formed at an end group to form a mixture;

Adding 50 to 100 parts by weight of an aliphatic isocyanate compound to the mixture to form a polyurea binder resin; And

It provides a method for producing an environmentally friendly elastic packaging material formed by mixing the polyurea binder resin, at least one elastomer selected from the group consisting of EPDM, rubber latex, ocher chips and polyurethane chips in a weight ratio of 100: 300 ~ 400.

In order to achieve the above another object, the present invention

50 to 100 parts by weight of an aliphatic isocyanate compound is added to a mixture formed by adding 10 to 25 parts by weight of ocher and 5 to 15 parts by weight of illite to 100 parts by weight of an epoxy prepolymer having an amine group formed at the terminal group, to form a polyurea binder resin,

The polyurea binder resin, EPDM, rubber latex, loess chip and polyurethane chip provides an environmentally friendly elastic packaging material, characterized in that formed by mixing at a weight ratio of 100: 300 ~ 400.

Eco-friendly elastic packaging material according to the present invention is excellent in mechanical strength, such as tensile strength and elongation, excellent adhesion strength, crack followability, no discoloration and discoloration, excellent visibility and no yellowing, no detachment, high temperature, snow, Even under the harsh external environment, the effect of generating negative ions or far infrared rays may persist.

Hereinafter, the present invention will be described in more detail.

The present invention can be used as an elastic pavement that can be constructed on walkways, trails and jogging tracks, children's playgrounds, multipurpose athletic facilities, and the like. By preparing a polyurea resin and mixing and stirring ocher and illite in a resin component in advance, it is possible to manufacture an eco-friendly elastic packaging material that improves the health and safety of users by blocking harmful substances due to the emission of far infrared rays and anions.

The present invention comprises the steps of adding 10 to 25 parts by weight of ocher and 5 to 15 parts by weight of illite to 100 parts by weight of an epoxy prepolymer (ATEP) having an amine group formed at an end group to form a mixture; Adding 50 to 100 parts by weight of an aliphatic isocyanate compound to the mixture to form a polyurea binder resin; And the polyurea binder resin and one or more elastic bodies selected from the group consisting of EPDM, rubber latex, ocher chips and polyurethane chips, are manufactured by mixing at a weight ratio of 100: 300 to 400.

Step-by-step description of the process for manufacturing an eco-friendly elastic packaging material.

As a first step, the ocher and illite mixtures are formed with an amine terminated epoxy prepolymer (ATEP). To prepare the mixture, an amine terminated epoxy prepolymer (ATEP) is first prepared. The bifunctional epoxy resin is reacted with at least one of a primary amine and a secondary amine to produce an amine-terminated epoxy prepolymer (ATEP) resin having an amine functional group at the terminal. As the bifunctional epoxy resin, for example, bisphenol A (BPA) can be used. The advantages of the BPA type are that it has good toughness, excellent adhesion and reactivity, and excellent heat resistance and mechanical strength.

It is preferable to produce an epoxy amine-terminated epoxy prepolymer (ATEP) by reacting the equivalent ratio of epoxy and amine in a ratio of 1: 1.5 to 2.5. The reaction equivalence ratio of the compounds composed of the main epoxy resin excellent in toughness, excellent in adhesion and reactivity, and excellent in heat resistance and mechanical strength is preferably 1: 1.5 to 2.5. If the reaction equivalence ratio (INDEX) is less than 1.5, the yield decreases and there is a risk of gelation due to the viscosity increase, which is not preferable. If the reaction equivalence ratio is more than 2.5, the content of amine is too high and the elongation is decreased. It is not preferable because it involves deterioration of physical properties.

The present invention prepares a polyurea resin including ocher and illite in the formed ATEP. It maintains functions such as the emission of far-infrared rays, the control of temperature and humidity, and the deodorization characteristic of ocher, and includes the elite having excellent deodorizing performance in the polyurea binder resin.

The illite has a mineral structure with a clay structure and is produced in heterogeneous or tuff sedimentary rocks with a specific gravity of 2.6 to 2.9 and aluminum, and is a metamorphic mineral of hydrothermal deposits. In addition, illite is a microporous structure, has a strong adsorption function and ion exchange function, and has the property of adsorbing particulate matter or separating particulate matter having different sizes by radiating anion and far infrared rays in a natural state. In addition to the ocher and illite it is possible to manufacture a polyurea binder resin by further comprising a natural zeolite having ion exchange capacity.

10 to 25 parts by weight of ocher powder and 5 to 15 parts by weight of illite are added to 100 parts by weight of ATEP resin prepared as described above to disperse in ATEP resin particles through high-speed stirring. If the content of ocher powder is less than 10 parts by weight, the effect of the property of adding ocher is not preferable, and if it exceeds 25 parts by weight, it is not preferable because of difficulty in increasing viscosity and dispersion. If the content of the illite is less than 5 parts by weight, it is not preferable because the characteristics of adding the illite at the time of charging is not preferable, and if it exceeds 15 parts by weight, it is uneconomical and difficult to increase the viscosity and dispersion is not preferable.

Due to this process, even after a long time after the construction of the packaging material of the present invention, the ocher and illite are not separated from the ATEP resin and maintain their original functions. It is possible to manufacture environmentally friendly ATEP resins that continue deodorizing function and far-infrared generation of materials. In addition, ocher and illite mixed in eco-friendly ATEP resin have functions of promoting cell activity / metabolism, anion generation, blood circulation, and resistance enhancement.

The present invention can also add dispersants and antisettling agents as additives to the epoxy prepolymer, as well as ocher and illite. The additive serves to prevent the dispersion and sedimentation of ocher and illite, and may be used alone or in mixture of 2 to 4 parts by weight based on 100 parts by weight of the epoxy prepolymer at the amine end.

As a second step, 50 to 100 parts by weight of an aliphatic isocyanate compound is added to an eco-friendly ATEP resin mixture to which ocher and illite are added to form a polyurea binder resin.

Aliphatic isocyanate compounds include hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI), methylene diphenol diisocyanate (MDI) and cyclohexyl methane diisocyanate (HMDI). At least one selected from the group consisting of.

The aliphatic isocyanate or a mixture thereof is maintained at a reaction temperature of 20 to 50 ° C. for 1 to 5 hours to prepare a one-component polyurea binder resin having an NCO content of 7 to 12 wt% and a viscosity of 500 to 5,000 cps / 25 ° C.

If the aliphatic isocyanate mixture content is less than 50 parts by weight in 100 parts by weight of the environmentally friendly ATEP resin during the mixing reaction, the desired NCO content cannot be obtained, and the desired physical properties are not obtained because the curing rate is lowered and the mechanical strength is not preferable. Unnecessary addition of the NCO content is undesirable because it can lower the storage stability and physical properties.

As a third step, 300 to 400 parts by weight of at least one elastomer selected from the group consisting of EPDM, rubber latex, ocher chips and polyurethane chips are mixed and stirred based on 100 parts by weight of the environmentally friendly one-component urea binder resin prepared in advance. . When the content of the elastic body is less than 300 parts by weight, it is not preferable because the rebound elasticity decreases and the resin content is high on the exterior surface, resulting in poor walking feeling, and when the content of the elastic body exceeds 400 parts by weight, the binder function is poor in adhesion and deterioration. It is not preferable because I bet.

The eco-friendly one-component polyurea resin of the present invention has excellent mechanical strength such as tensile and elongation, excellent adhesion strength, crack followability, and no visibility of discoloration and discoloration, compared to commonly used one-component urethane binder resins, and excellent visibility of EPDM chips and rubber. The bonding strength with latex, ocher chips and polyurethane chips is also excellent, making it suitable as an elastic packaging material binder resin.

In the case of the elastic packaging material containing the ocher component, it is mixed and agitated at the time of construction so that the desorption and detachment occur, so that the ocher component effect is insufficient, or as time passes in the natural environment such as snow or rain. The ocher constituents were swept away, resulting in a decrease in anion and far infrared generation effects. However, since ocher and illite are dispersed in the resin component, it has the effects of ocher and illite even after a long time, so that it can continue to function as an eco-friendly elastic packaging material.

Hereinafter, the present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited to the examples.

Example

Displays the manufacturer and product name of the material used in the embodiment of the present invention.

`` Amine ''-HUNTSMAN's D-400

『Bifunctional epoxy resin』-Bisphenol A type YD-128 from Kukdo Chemical

`` Ocher ''-from Saturn ocher

『Ilite』-Purchase from Chemius Korea

`` Dispersant ''-Dow Corning Z-6264

`` Sedimentation inhibitor ''-BYK's Anti-Terra-204

Aliphatic Isocyanates-from Rhodia

『EPDM』-Purchase from Kumho Polychem

ATEP  Preparation of Binder Resin

An amine was reacted with a bifunctional epoxy resin to prepare an epoxy prepolymer (ATEP) at the terminal of a modified epoxy amine having an amine functional group at the terminal.

Example  One

2 parts by weight of additives, 15 parts by weight of ocher, and 5 parts by weight of illite were mixed to 100 parts by weight of ATEP resin to prepare anion-producing eco-friendly ATEP resin, and 55 parts by weight of aliphatic isocyanate was mixed and reacted to prepare a one-component polyurea binder resin. .

To 100 parts by weight of the one-component polyurea binder resin, 350 parts by weight of EPDM chips were mixed and stirred to prepare an eco-friendly elastic packaging material.

Example  2

2 parts by weight of additives, 18 parts by weight of ocher, and 7 parts by weight of illite were mixed with 100 parts by weight of ATEP resin to prepare anion-producing eco-friendly ATEP resin, and 52 parts by weight of aliphatic isocyanate was mixed and reacted to prepare a one-component polyurea binder resin. . Eco-friendly elastic packaging material was prepared by mixing and stirring 350 parts by weight of EPDM chips with 100 parts by weight of a one-component polyurea binder resin.

Example  3

2 parts by weight of additives, 20 parts by weight of ocher, and 10 parts by weight of illite were mixed to 100 parts by weight of ATEP resin to prepare anion-producing eco-friendly ATEP resin, and 60 parts by weight of aliphatic isocyanate was mixed and reacted to prepare a one-component polyurea binder resin. . Eco-friendly elastic packaging material was prepared by mixing and stirring 370 parts by weight of EPDM chip with 100 parts by weight of one-component polyurea binder resin.

Comparative example  One

2 parts by weight of additives, 30 parts by weight of ocher, and 18 parts by weight of illite were mixed with 100 parts by weight of ATEP resin to prepare anion-producing eco-friendly ATEP resin, and 40 parts by weight of aliphatic isocyanate was mixed and reacted to prepare a one-component polyurea binder resin. . Eco-friendly elastic packaging material was prepared by mixing and stirring 300 parts by weight of EPDM chips with 100 parts by weight of a one-component polyurea binder resin.

Comparative example  2

2 parts by weight of additives, 20 parts by weight of ocher, and 12 parts by weight of illite were mixed with 100 parts by weight of ATEP resin to produce anion-producing ATEP resin, and 70 parts by weight of aliphatic isocyanate was mixed and reacted to prepare a one-component polyurea binder resin. . Eco-friendly elastic packaging material was prepared by mixing and stirring 450 parts by weight of EPDM chip with 100 parts by weight of one-component polyurea binder resin.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 ATEP resin 100 100 100 100 100 ocher 15 18 20 30 20 Illite 5 7 10 18 12 additive 2 2 2 2 2 Aliphatic isocyanates 55 52 60 40 70 EPDM Chip 350 350 370 300 450

Evaluation and Results

The specimens of Examples 1 to 3 and Comparative Examples 1 to 2 were sufficiently mixed to prepare specimens for measuring physical properties, and then tensile strength and elongation were measured according to standard number KS M 6782 (tensile test method of vulcanized rubber).

The hardness and dimensional change rate were measured by fabricating 300 (L) × 50 (W) × 150 (H) SIZE specimens, and other physical properties were applied directly to the site, which resulted in discoloration, discoloration, adhesion, and importance as binders. The chip detachment phenomenon, which is a role, was visually confirmed. The results are shown in Table 2 below.

Evaluation item Example Comparative example One 2 3 One 2 Tensile Strength (MPa) 1.2 1.25 1.3 0.95 0.78 Elongation (%) 81 77 74 59 51 Hardness (Hs) 70 71 73 68 85 Dimensional rate of change (%) ◎ ◎ ◎ X X Discoloration and
decolorization
(month) 3 ◎ ◎ ◎ ◎ ◎ 6 ◎ ◎ ◎ ◎ ◎ 9 ◎ ◎ ◎ ◎ ◎ 12 ◎ ◎ ◎ ○ ○ Attached state
(month) 3 ◎ ◎ ◎ ○ ○ 6 ◎ ◎ ◎ ○ ○ 9 ◎ ◎ ◎ X ○ 12 ◎ ◎ ◎ X X Tally
(month) 3 ◎ ◎ ◎ ○ ○ 6 ◎ ◎ ◎ X ○ 9 ◎ ◎ ◎ X X 12 ◎ ◎ ◎ X X

 ◎: Excellent, ○: Good, X: Poor

The tensile strength, elongation rate, hardness, and dimensional change rate were evaluated by referring to the results of Table 2.

Examples 1 to 3 showed excellent tensile strength, elongation rate, and dimensional change rate compared to Comparative Examples 1 to 2, and also showed excellent hardness.

Looking at the discoloration and discoloration, it can be seen that in Examples 1 to 3 and Comparative Examples 1 to 2 are generally less discoloration and discoloration occurs. However, Examples 1 to 3 can be confirmed that there is almost no discoloration or discoloration even after 3 months to 12 months, and Comparative Examples 1 and 2 can confirm that discoloration and discoloration occurs after 12 months.

Looking at the evaluation of the adhesion state, Examples 1 to 3 can confirm that the adhesion state is excellent even after 3 months to 12 months, Comparative Example 1 was good up to 8 months, but the adhesion state was insufficient after 9 months, Comparative Example 2 was good until 11 months, but the adhesion state was insufficient after 12 months.

Looking at the desorption phenomenon, Examples 1 to 3 can confirm the excellent result that no desorption phenomenon after 3 months to 12 months, and Comparative Example 1 was good up to 5 months, but desorption occurred after 6 months Inadequately, Comparative Example 2 was inadequate after 8 months, and desorption occurred after 9 months.

Although the present invention has been described with reference to the examples, these are merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (5)

Adding 10 to 25 parts by weight of ocher and 5 to 15 parts by weight of illite to 100 parts by weight of an epoxy prepolymer having an amine group formed at an end group to form a mixture;
Adding 50 to 100 parts by weight of an aliphatic isocyanate compound to the mixture to form a polyurea binder resin; And
The polyurea binder resin, EPDM, rubber latex, loess chip and polyurethane chip is a method for producing an environmentally friendly elastic packaging material formed by mixing at a weight ratio of 100: 300 ~ 400.
The method of claim 1,
The aliphatic isocyanate compound is at least one selected from the group consisting of hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI), methylene diphenol diisocyanate (MDI) and cyclohexyl methane diisocyanate (HMDI) Method for producing an elastic packaging material.
The method of claim 1,
The method of manufacturing an eco-friendly elastic packaging material, characterized in that it further comprises a sedimentation inhibitor and a dispersant as an additive to the epoxy prepolymer.
50 to 100 parts by weight of an aliphatic isocyanate compound is added to a mixture formed by adding 10 to 25 parts by weight of ocher and 5 to 15 parts by weight of illite to 100 parts by weight of an epoxy prepolymer having an amine group formed at the terminal group, to form a polyurea binder resin,
Eco-friendly elastic packaging material characterized in that the polyurea binder resin, EPDM, rubber latex, ocher chip and one or more elastic bodies selected from the group consisting of polyurethane chips are formed by mixing in a weight ratio of 100: 300 ~ 400.
The method of claim 4, wherein
Eco-friendly elastic packaging material further comprising an antisettling agent and a dispersant as an additive.