KR102046644B1 - Compositions for polyurethane track that provide environmental friendliness - Google Patents

Abstract

A polyurethane track composition of the present invention relates to an environment-friendly polyurethane tract which has a structure of eliminating damage or cause of heavy metals and carcinogenic organic compounds in a composition of a polyurethane track for laying on concrete or asphalt concrete, and also adding functional materials to prevent burns and improve physical properties.

Description

Compositions for polyurethane track that provide environmental friendliness}

The present invention relates to a polyurethane resin composition which removes concern about environmental pollution such as heavy metals and volatile organic compounds among components of a polyurethane track and prevents burns and improves physical properties.

More specifically, urethane prepolymer and diamines, glycols, and polyols mixed with toluene diisocyanate (TDI) and glycols (Glycol) Polyol) is mixed and the polyurethane track for laying it on the concrete or Ascon top surface for preventing burns and improving physical properties while eliminating the causes or causes of heavy metals and carcinogenic organic compounds. A composition for environmentally friendly polyurethane tracks in which a functional material is added.

Polyurethane is produced under the conditions of hydroxyl catalyst (R '-(OH) N ≧ 2) or ultraviolet activation by reaction between polyol and isocyanate salt conjugates (R · (N = C = O) n ≧ 2).

Polyurethanes are characterized by the isocyanate salts and the type of polyols. The long bonds in the polyols help to make soft elastomers, and the enormous amounts of bonds make them hard polymers. Maintaining the intermediate length of the bond allows for a very flexible and moderate rigidity.

The three-dimensional bond of polyurethane means that the polymer has a very high molecular weight. In some respects, a polyurethane unit can be considered as one large molecule, for example, when the polyurethane is burned, the units do not melt. It hardens and changes its properties, which means that other additives can react with the unit to produce new polymers.

Polyurethanes are prepared by mixing two or more liquids, such as polyol streams, which contain catalysts, surfactants, blowing agents and two components, also called polyurethane-based or simply urethane systems.

The chemical property of urethane is that isocyanate group (N = C = O) is easily combined with hydroxyl group (-OH) (urethane bond). The polymer is polyurethane.

Generally, toluene diisocyanate is used as the diisocyanate, and polyether or polyester is used as a molecule (polyol) having a hydroxyl group, and polyether is used to soften, and polyester is used to form a hard plastic.

In addition, polyurethanes made using molecules having three or more hydroxyl groups as polyols are three-dimensionally bonded ones. Polyurethanes having such a structure do not deform even with heat, and when formed, the reaction of diisocyanate is fast. Generally, casting is used, and gears and pipes are made. PU, which is known as a representative high-elastic material, due to its inherent physical properties, is used in construction materials, as well as synthetic fibers such as elastic yarn, artificial leather, waterproof clothing, and shoes. It is used in a wide variety of fields, from automotive supplies, playground tracks and furniture.

However, in order to install polyurethane on the concrete or asphalt concrete by wet process, toluene or dimethylformamide (DMF) organic solvent is used, but even if the installed polyurethane track is left outdoors for a long time, it is used as a solvent inside the finished product. Toluene or DMF is very likely to remain, causing volatile organic compounds damage to children playing on polyurethane tracks.

The playground track is a physical space where people, including children, can run around to increase their physical strength.The playground track, where children of growing age are active, is not just a space for professional sports activities, but a variety of activities to receive physical education, play, and enjoy gathering. It is a space that is made up of a variety of activities to satisfy all emotional, aesthetic, physical and educational aspects in a pleasant environment.

However, unfortunately, if the elastic filler of polyurethane installed on the playground track contains carcinogen polycyclic aromatic hydrocarbons (PAHs) or heavy metals such as lead, tin, and cadmium, it can be used for those who exercise on the playground track. It is impossible to exclude the possibility of exposure as it is. In the situation where the fine dust pollution is getting higher recently, if the fine dust or yellow dust containing heavy metals is contaminated on the top of the polyurethane track, the damage caused by the dissolution of heavy metals under acidic conditions such as acid rain will be avoided. Can bring

In addition, polyurethane tracks placed on top of concrete or asphalt concrete are directly irradiated with sunlight, so that the physical properties of the polyurethane tracks are degraded by UV decomposition of sunlight. As it may cause problems for health and respiratory health, and the replacement cost is shortened due to the shortening of endurance, research to find a way to maintain the properties of the fillers for a long time while reducing the harmfulness of the polyurethane track is needed. to be.

And, when exercising on a polyurethane track, many people with visual discomfort must experience a low efficiency and discomfort and visual fatigue with the exercise, providing as beautiful colors as possible to provide visual comfort.

In addition, the polyurethane track absorbs a large amount of thermal energy and generates tremendous high temperatures, and even a general adult may be burned if exposed to the polyurethane track for more than 10 minutes at a surface temperature of 50 ° C. Damage of the human body can not be excluded.

In order to solve such problems, the prior art disclosed in Korean Laid-Open Patent Publication No. 10-2019-0005973 A proposes a method for manufacturing PU flooring for a playground, which provides reactive components for preparing polyurethane. In step 502 the reactive components comprise component A which is a polyol mixture and component B which is an isocyanate mixture and water, wherein component B is 2,2'methylenediphenyldiisocyanate, diphenylmethane-2,4'- Diisocyanate, diphenylmethane-4,4'-diisocyanate (926, comprising an isocyanate prepolymer, mixing the reactive components to produce a liquid polyurethane reaction mixture; Applying to the playground floor before the chemical reaction produces a solid polyurethane foam; the polyurethane foam solidifies Afterwards, a method for producing PU flooring for a playground used as a polyurethane flooring is presented.

In addition, Korean Patent Publication No. 10-2019-0000164 A proposes a method for constructing an environment-friendly elastic packaging material, the technique is made from the group consisting of activated carbon powder, charcoal powder and antibacterial material, and (a) applying a primer mixture to the road surface To form a primer layer; (b) applying a rubber chip mixture including a rubber chip and a binder having an average particle size of 0.5 to 2.0 mm on an upper surface of the primer layer to form an elastic layer; (c) applying a sealing material mixture including a rubber powder having an average particle size of 0.05 to 0.5 mm on an upper surface of the elastic layer to form a sealing layer; (d) applying a urethane mixture to the upper surface of the sealing layer to form a urethane layer; And (e) applying a top coating material mixture to the top surface of the urethane layer to form a top coating layer. There is proposed a construction method of an eco-friendly elastic packaging material including.

In addition, Korean Patent Publication No. 10-2017-0121055 proposes an environment-friendly elastic polyurea resin composition, the present invention is a 4,4'- diisocyanate dimethylmethane 35 ~ 45 parts by weight, 4,4'- methylenediphenyl 5 to 15 parts by weight of diisocyanate, 2 to 8 parts by weight of o- (p-isocyanatobenzyl) phenyl isocyanate, 25 to 35 parts by weight of polypropylene glycol (PPG), 1-tris (2-chloro-1-methylethyl ) Consisting of 15-25 parts by weight of phosphate; And 1,1 to 90 to 95% by weight of a two-component polyurea resin in which a curing agent composed of 70 to 85 parts by weight of polyoxypropylene diamine and 15 to 30 parts by weight of diethyltoluenediamine is mixed at a weight ratio of 1: 1 to 1.2. It comprises 5 to 10% by weight of a blowing agent consisting of 1,3,3-pentafluorobutane and 1,1,1,2,3,3,3-heptafluoropropane. 4,4'- diisocyanate dimethylmethane, 4,4'-methylenediphenyl diisocyanate, o- (p-isocyanatobenzyl) phenyl isocyanate is NCO content of 29 to 33%, poly Propylene glycol (PPG) is an environmentally friendly elastic polyurea resin composition characterized in that the weight average molecular weight (Mw) 1,000 ~ 5,000, hydroxyl value (OH-value) 30 ~ 150.

In addition, Korean Patent Application Publication No. 10-2015-0157254 discloses an environment-friendly elastic packaging material using waste medium density fiber boards and polyurethane resins, and in the construction method thereof, shreds medium density fiber boards (MDF) with chips to treat organic solvents, and then Environment-friendly elastic packaging material and a method of construction thereof has been proposed that the mixing, the techniques are urethane prepolymer (Urethane prepolymer) produced from toluene diisocyanate (TDI, Glycol) and In the composition of the polyurethane track for mixing the composition of the polyol mixed with diamines, glycols, inorganic fillers, and laying it on the concrete or ascon top surface Functional material to prevent burns, improve physical properties and visual effects while reducing the damage of heavy metals and carcinogenic organic compounds Since it is a technology that does not include a configuration that is added, it can be said that the technology and the configuration of the present invention is completely different.

The present application contains harmful components such as polycyclic aromatic hydrocarbons (PAHs), which are carcinogens, and lead, cadmium, and tin, which are carcinogens, among the compositions forming polyurethane tracks, which are widely used in various sports facilities, sports facilities, and industrial facilities. In this case, it is exposed to students or sports people as it is, and it can cause a lot of damage in health. In the case of polyurethane track installed on the concrete floor or ascon floor, sunlight is directly irradiated. Conventional polyurethane tracks are considered in consideration of the problem of reducing the service life due to the deterioration of the properties of the urethane track components and the problem of user's image generation caused by excessively high temperature rise of the surface of the polyurethane track due to direct sunlight irradiation. Environmentally friendly to solve all problems that may occur in It has an object to provide a track for the polyurethane composition.

The present application for achieving the above object is a urethane prepolymer (diurethane prepolymer) and diamines (D-amines), glycols (Glycols), inorganic fillers produced from toluene diisocyanate (TDI, Toluene diisocyanate) and glycols The composition of the polyurethane track for mixing the mixed polyol composition and laying it on the concrete or ascon top surface, while preventing damage to heavy metals and carcinogenic organic compounds in the composition of the polyurethane track, and improving physical properties. And it is an invention of the technical idea to provide the composition for environmentally friendly polyurethane tracks which consist of a functional material for eliminating visual malaise.

One example of the application of urethane prepolymer is 45 wt% toluene diisocyanate (TDI), 44.5 wt% di-amines and glycols 10% by weight, the antifoaming agent is mixed to achieve 100% by weight in 0.5% by weight ratio and then a liquid prepolymer (A) composition of the liquid prepolymer (A) may be prepared and used by heating conditions at 70-90 ° C. for 2-4 hours. , 80% by weight of glycols, 5% by weight of di-amines, 14% by weight of plasticizer, and 1% by weight of water-soluble polyol (B) Can be prepared and used, based on 100 parts by weight of the water-soluble polyol (B drug) 60 to 150 parts by weight of inorganic ceramic filler, 5 to 25 parts by weight of Ettringite, 0.25 to 5.0 ㎛ One of size titanium dioxide (TiO2) and zinc oxide (ZnO) is selected 2 to 5 parts by weight of photocatalyst, 3 to 12 parts by weight of lightweight foam ceramic selected from aerogel, perlite and volcanic ash, and 1.5 to 4.5 parts by weight of pigment are mixed to form a polyol compound (B) After the preparation, the composition (A) and the composition (B) may be mixed in a 4 ± 0.5: 6 ± 0.5 weight ratio to achieve the object of the present application through the configuration provided as a composition of the polyurethane track.

Hereinafter, the technical spirit of the present application will be described in detail.

The glycols are toluene diisocyanate (TDI, toluene)
Its purpose is to make polyurethane by reacting with diisocyanate).
Group glycols are preferably used at least one selected from ethylene glycol (Monoethylene glycol), polyalkylene glycol (Polyalkylene glycol), propylene glycol (Propylene glycol).

The defoaming agent is intended to remove a large amount of foam generated in order to provide a polyurethane track composition, this antifoaming agent is used without any special foaming agent to prepare a composition of the polyurethane track without foaming, In addition, the antifoaming agent may use at least one antifoaming agent selected from a silicone type, paraffin type, mineral oil type antifoaming agent.

The diamines are intended to produce polyurea by reacting with isocyanate, and the diamines are hexamethylenediamine, ethylenediamine, propylenediamine, butylenediamine. ), Trimethylene diamine, tetramethylene diamine, polyoxypropylene diamine, hexamethylene diamine, 1,2-diaminomethane , N, N-dimethylpropylenediamine, tetraacetylethylenediamine (TAED, Tetraacetylethylenediamine), difetylisopropylamine (Di- (β-Phenylisopropyl) amine), dienbutylamine (Di-N-Butyl amine ), It is preferable to constitute at least one diamine selected from Q-amine.

The plasticizer is intended to provide flexibility and processability during polyurethane process of the polyurethane track composition, and for this purpose, phthalate-based, adipate-based, trimellitate-based, epoxy One or more plasticizers of (Epoxy), Phosphate, and Polyester can be used. If heat resistance is required, it is preferable to select a trimellitate plasticizer, and heat stability is required. In this case, it is preferable to select an epoxy plasticizer, and if a flame retardancy is required, it is preferable to select a phosphoric acid plasticizer, and if a non-performing property is required, it is preferable to use a polyester plasticizer. As an additive used to process the material, it is a material that is closely used in daily life such as industry and home. Phthalate-based plasticizers, which have been used for general purposes, have been used since the 1930s, and are used in various household goods such as electrical and electronic products, pharmaceuticals, paint pigments, lubricants, binders, surfactants, food containers, packaging materials, etc. It is known that it has a negative effect on function or physical development, and it is classified as an environmental hormone that can cause endocrine disorders. It is preferable to use the phthalate-type eco-friendly plasticizer.

The inorganic fillers include a low-cost inorganic material inside the expensive elastic fillers to provide a competitive price, and to increase the compressive strength from external impact of the polyurethane track. Borate, Serpentine, Acid clay, Iron Oxide, Garnet, Carbonate Minerals, Attapulgite, Sepiolite, Purgatory It is preferable that at least one ceramic powder selected from (Nephrite), barite, hectorite, and fly ash is formed.

The etrinite is advantageously manufactured and supplied according to the difficulty of easy purchase on the market. In order to prepare ethrinite, 6 mol of calcium hydroxide [Ca (OH) 2] or calcium oxide (CaO) was supplied to a heating vessel, followed by water supply to slurry, and 1 mol of the other vessel. After dissolving aluminum sulfate, it is supplied to the slurry of aluminum sulfate dissolved in slurryed calcium hydroxide or calcium oxide, and heated, dried and pulverized for 30 minutes in a water bath of 50 to 70 ° C. Ethrinite powder is obtained.

The photocatalyst is composed of a photocatalytic material for promoting photolysis of volatile organic compounds (VOCs), which are included in the composition of the polyurethane track, by photovoltaic rays, and the polyurethane polymer by ultraviolet rays of irradiated sunlight. The purpose of the present invention is to prevent durability degradation due to photolysis, and for this purpose, at least one photocatalyst of titanium dioxide (TiO ₂ ) and zinc oxide (ZnO) is preferably configured, and the photocatalyst is a surface of the polyurethane track according to the present application. The photocatalyst particle size of titanium dioxide or zinc oxide is advantageously as small as possible in order to increase the efficiency of photolysis when sunlight is directly irradiated to the composition. There is a very large particle size, if you buy at an affordable price The photocatalyst may have a particle size of 0.25 to 5.0 μm because the effect of photolysis is greatly deteriorated and it is contrary to the technical idea of the present application.

The lightweight foam ceramic provides a thermal insulation effect to the composition of the polyurethane track to prevent burns of people exercising on the track, and lowers the temperature rise of the polyurethane track composition due to solar heat, thereby lowering the photolysis rate of the polyurethane polymer according to the long term. It is used to provide the durability of the filler, it is preferable to use at least one lightweight foam ceramic selected from airgel, Perlite, volcanic ash.

The pigment is intended to provide a beautiful color to provide a visual and comfortable feeling, and the pigment is not particularly limited by using any of organic pigments, inorganic pigments, mono-pigmentation, coloring power, hiding power and color tone, It does not cause any problems in clarity and color fastness, and provides a suitable color to the elastic filler chip of the polyurethane track so that it does not feel visual discomfort or burden, and any pigment may be selected and used if it suits the visual taste of people.

In the case of the organic pigment, green cyanine green, permanent orange of long and short, permanent yellow of sulfur, toluidine of scarlet toluidine red, permanent black of ink, and inorganic pigments typically include Titanium dioxide R 760 of red sugar, Iron oxide yellow of ocher, Homin Cinnabar, yellow-green emerald green, long and short lead red, stone oxide iron oxide red, Chromium yellow of yellow lead, chromium oxide green of lower lobe, cobalt blue 7117 of Yangcheng, and ultramarine of ultramarine Ultramarine), and in the case of mono pigments, yellow-colored Seokwoong-hwang (石 雄黃), Donghwang (銅 黃), sulfur Dangju Hong (연 朱 과) of red and red system, Yeonji (? 脂), Seokju (石 澗 朱), Beonju Hong and lower lobe of green system, Seok-rok (石綠), Samrok (綠), cerebral green (blue), blue and blue (靑 化), blue and blue, two blue, three blue and white (true), fine powder (丁 紛) It is preferable that at least one pigment selected from organic pigments, inorganic pigments and mono pigments is selected in order to provide a visually beautiful color to the composition of the polyurethane track.

The present invention is a polycyclic aromatic hydrocarbons (PAHs), which are carcinogens, and heavy metals such as lead, cadmium, and tin from the components present in the conventional polyurethane track composition in polyurethane tracks that are widely used in sports facilities, sports fields, etc. Relieves the concern that harmful substances such as back are exposed to students who are exercising on the playground track or general sportsmen as it can cause a lot of health damage, and that the polyurethane track may be burned due to the high temperature of 50 ℃ or higher. In addition, the durability of the polyurethane track composition has the effect of eliminating the problem of frequent replacement in a short period of time.

The compositions of the polyurethane tracks provided by the present technology include heavy metals that may be contaminated with the polyurethane composition by the composition of functional substances such as ethringite, inorganic ceramic fillers, lightweight foam ceramics, photocatalysts and pigments, which are free of harmful components. And reducing environmental damage from harmful substances, improving the physical properties of polyurethane, which is composed of polymers, can provide long-term functionality, creating a pleasant and beautiful playground environment, greatly improving the health and satisfaction of the people, and preventing burns. The effect of providing long-term polyurethane tracks is very great.

1: Ethrinzite electron microscope results of synthesized needle-like structure that can improve the immobilization of heavy metals and the bending strength of the polyurethane polymer contained in the polyurethane composition of the present invention

Prior to describing the embodiments of the invention for embodying the technical idea of the present application by way of example, the terms or words used in the specification or claims of the present application shall not be construed as being limited to a common or dictionary meaning, The scope of protection of the present application should be construed as meanings and concepts corresponding to the technical idea of the present invention, and the examples described herein are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present application. It is to be understood that there may be various equivalents and variations in place of them at the time of this application.

Hereinafter, the present invention will be described in detail with reference to the following examples the technical spirit of the present application.

Example 1

XX Co., Ltd. 45% by weight of toluene diisocyanate (TDI), 44.5% by weight of butylene diamine, 10% by weight of ethylene glycol (Ethylene glycol), silicone antifoaming agent 80% by weight of water-soluble prepolymer (A drug), ethylene glycol, 5% by weight of ethylenediamine, 14% by weight of dioctyl acetate, and a tin catalyst. 1 wt% of water-soluble polyol (B drug) was purchased, and a functional material was added to the water-soluble polyol (B drug) to check physical properties thereof.

Based on 100 parts by weight of water-soluble polyol (B drug), 60 parts by weight of kaolin (wind acid mining) having an average particle size of 35 μm as an inorganic ceramic filler and titanium dioxide having an average particle size of 1.5 μm with a photocatalyst ) 2.0 parts by weight, lightweight foam ceramic is 3.0 parts by weight of aerogel, pigment is 2.0 parts by weight of organic pigment cyanin green, and ethrinzite is 6 moles of Ca (OH) ₂ and 1 mole of sulfuric acid 5.0 parts by weight of aluminum [Al ₂ (SO ₄ ) ₃ .18H ₂ O] prepared by hydrothermal synthesis at a temperature of 65 ° C. was mixed with a water-soluble polyol. .

The prepared water-soluble prepolymer (A drug) and the water-soluble polyol (B drug) were uniformly mixed so as to have a weight ratio of 4: 6, and laid on the concrete surface in a size of 1,000 mm × 1,000 mm × 12 mm.

Example 2

60 parts by weight of silicon dioxide having an average particle size of 40 μm as an inorganic ceramic filler and 5.0 parts of titanium dioxide (Cosmo Chemical) having an average particle size of 1.5 μm as a photocatalyst based on 100 parts by weight of the water-soluble polyol (B drug). In addition, lightweight foam ceramics are 3.0 parts by weight of perlite, pigments are 3.0 parts by weight of inorganic pigments of yellow oxide, and ethrinzite is 6 moles of Ca (OH) ₂ and 1 mole of sulfuric acid. Aluminum [Al ₂ (SO ₄ ) ₃ .18H ₂ O] was prepared in the same manner as in Example 1 except that 10 parts by weight of a mixture prepared by hydrothermal synthesis at a temperature of 65 ° C was mixed.

Example 3

120 parts by weight of zeolite's 4A zeolite as an inorganic ceramic filler and 5.0 parts by weight of titanium dioxide (Cosmo Chemical) having an average particle size of 1.5 μm as a photocatalyst based on 100 parts by weight of a water-soluble polyol (B drug), Lightweight foam ceramics are made of perlite, volcanic ash, 5.0 parts by weight, pigments are red, 3.0 parts by weight of red, and ethrinzite is 6 moles of Ca (OH) ₂ and 1 mole of sulfuric acid. Aluminum [Al ₂ (SO ₄ ) ₃ .18H ₂ O] was prepared in the same manner as in Example 1 except that 10 parts by weight of a mixture prepared by hydrothermal synthesis at a temperature of 65 ° C was mixed.

Example 4

150 parts by weight of talc having an average particle size of 10 μm as an inorganic ceramic filler and 5.0 parts by weight of zinc oxide (Samjeon Pure Medicine) having an average particle size of 2.5 μm as a photocatalyst based on 100 parts by weight of a water-soluble polyol (B drug). , Lightweight foamed ceramics are 12 parts by weight of aerogel (ALM TECH), pigments are 4.5 parts by weight of inorganic pigment of iron oxide yellow, and ethrinzite is equivalent to 6 moles of Ca (OH) ₂ and 1 mole. Aluminum sulfate [Al ₂ (SO ₄ ) _{3 18} H ₂ O] was carried out in the same manner as in Example 1 except that 25 parts by weight of the powder prepared by hydrothermal synthesis at 65 ℃.

Comparative Example 1

XX Co., Ltd. 45% by weight of toluene diisocyanate (TDI), 44.5% by weight of butylene diamine, 10% by weight of ethylene glycol (Ethylene glycol), silicone antifoaming agent Containing 0.5 wt%, heated at 75 o C for 2 hours, reacted with water-soluble prepolymer (A drug), 80 wt% of ethylene glycol, 5 wt% of ethylenediamine, 14 wt% of dioctyl acetate, and a catalyst based on tin. Purchasing and preparing a water-soluble polyol (D drug) containing 1% by weight, uniformly mixing the prepared water-soluble prepolymer (D drug) and the water-soluble polyol (D drug) in a ratio of 5: 5 and 1,000 mm × 1,000 mm on the concrete surface It was installed in a size of 12 mm.

 When heavy metals contained in the composition of the polyurethane tracks of Comparative Examples 1 and Examples 1 to 4 and heavy metals contained in yellow dust and fine dust were contaminated on the surface of the polyurethane polymer constructed with the polyurethane tracks, heavy metals were eluted by acid rain. It was confirmed to what level the solution is chemically bound to ethrinzite. First, 1 liter of 1,000 ppm Pb AAS standard was diluted to 10 ppm in a 3 liter beaker, and the polyurethane track samples prepared in Comparative Examples 1 and 1 to 4 were prepared in a size of 5 cm × 5 cm. The dog was immersed for 1 week, and then the supernatant was aliquoted to analyze and confirm lead heavy metals by ICP / AES (Thermo Fisher Scientific iCAP 7400Duo).

In order to confirm the level of photolysis of environmentally harmful organic substances emitted from the polyurethane track composition according to the present application, a volatile organic compound is formed at the center of the 1 m × 1 m polyurethane track made in Comparative Examples 1 and 1 to 4. Spike exactly 5 ml of the substance benzene, and leave it on the playground where sunlight is irradiated, and collect the benzene at 5 cm above the polyurethane track composition using a gas collector to perform gas chromatography (Agilent Technologies 6890N). Toluene was quantitatively analyzed, and the polyurethane tracks made in Comparative Examples 1 and 1 to 4 were placed in the same place where sunlight was irradiated in order to examine burns by the polyurethane track composition, and a laser thermometer (Taekwang, TK) -307A) to compare the surface temperatures of the polyurethane tracks.

In addition, the A hardness (teclac Co., Ltd., GX-01) about the polyurethane track samples made in Comparative Example 1 and Examples 1 to 4 was confirmed.

Table 1 shows the results of the present Comparative Example 1 and Examples 1 to 4.

division Pb (ppm) Benzene (ppm) Temperature ( ^oC ) A hardness Example 1 N.D. 8.6 34 55 Example 2 N.D. 6.7 31 57 Example 3 N.D. 6.5 30 60 Example 4 N.D. 7.9 28 63 Comparative Example 1 9.4 38 50 24 N.D. means non-detectable and the detection limit is 0.05 ppm.

As shown in Table 1 above, when the heavy metal is included in the composition of the polyurethane track itself or the heavy metals contained in the yellow dust and fine dust are contaminated on the surface of the polyurethane track composition installed in the playground, As a result of confirming the possibility of immobilization with ziite, as shown in Comparative Example 1, when ethrinzite, which is a heavy metal immobilizing agent, is not contained, ethrinzite does not appear at all due to the fact that lead (Pb) is not immobilized to heavy metal If heavy metal immobilizing agent is not included in the composition of the polyurethane track, it can be expected that human life and environmental damage by heavy metal is very likely to occur.

On the other hand, as in Examples 1 to 4, if the composition of the polyurethane track includes ethrinzite that can chemically fix the heavy metal, the heavy metal of lead (Pb) contained in the water can be chemically easily fixed. It is believed that the heavy metal problem that could not be solved in the past can be sufficiently solved.

In addition, in the polyurethane track to prevent damage to volatile organic compounds such as benzene, xylene, ethylbenzene, etc. contained in the polyurethane track composition through skin contact or respiratory through physical activity, in Comparative Example 1 38 While in the case of Comparative Example 1, in which the polyurethane track composition does not contain a photocatalyst as the benzene in the concentration of ppm is detected in Examples 1 to 4, the concentration of benzene in the range of 6.5 to 8.6 ppm is detected in Examples 1 to 4. It can be expected to be discharged out of the structure of the polyurethane track composition, Examples 1 to 4 in the case of the irradiation of sunlight to be emitted as the environmental harmful chemicals are decomposed by the photocatalyst exposed on the surface of the polyurethane track composition As can be expected, the photocatalyst composition of the present invention can photodegradate human harmful organic compounds. That is of course provided the effects of the sun protection according to the photocatalyst by expected to significantly reduce the replacement cost of the polyurethane track by extending the duration of years to extend the life of the polyurethane polymer consisting of a polymer.

In addition, when the lightweight foam ceramic having excellent thermal insulation effect is not included as in Comparative Example 1, when the surface temperature of the polyurethane track is 50 ° C., the lightweight foam ceramic having excellent thermal insulation effect is included in the polyurethane track composition. By showing the temperature of ~ 34 ℃, it can greatly reduce the damage of burns, and by providing a low temperature of the polyurethane track composition, it provides the durability of the polyurethane track made of polymer in the correlation of sunlight and temperature. It is expected to be possible.

FIG. 1 is a photographic view showing a result of an Etrinzite electron microscope measurement of a needle-like structure synthesized to provide fixation of heavy metals and improved physical properties of a track composition included in a polyurethane track composition according to the present invention. FIG. Etrinite of the picture was enlarged to 100,000 times, Figure 1b is taken to enlarge the ettrineite of the needle structure to 10,000 times, needle-like calcium aluminum that can provide a similar role as glass fiber It is a photograph figure which can confirm the result of sulfuric acid type inorganic short fiber acquisition.

Figure 1 is a photographic result of the synthesized needle-like Ettrinite electron microscopy to improve the immobilization of heavy metals and the bending strength of the polyurethane polymer contained in the polyurethane composition of the present invention will not need to be described separately .

Claims (5)

In the composition for an environmentally friendly polyurethane track,
45% by weight of toluene diisocyanate (TDI), 44.5% by weight of di-amines, 10% by weight of glycols and 0.5 defoamers to form a liquid prepolymer (Urethane prepolymer) After mixing to achieve 100% by weight to 100% by weight, a liquid prepolymer composition (A) is prepared by heating the reaction at 70-90 ° C. for 2-4 hours.
Water-soluble polyol In order to form a drug, 80% by weight of glycol, 5% by weight of di-amine, 14% by weight of plasticizer, and 100% by weight of catalyst are mixed to form a water-soluble polyol. After the drug is ready
60 to 150 parts by weight of inorganic ceramic filler, 5 to 25 parts by weight of ettringite, titanium dioxide (TiO2) of 0.25 to 5.0 μm, and zinc oxide (ZnO) based on 100 parts by weight of water-soluble polyol 2 to 5 parts by weight of a photocatalyst, one selected from aerogels, perlite, 3-12 parts by weight of light foamed ceramics selected from volcanic ash, and 1.5 to 4.5 parts by weight of a pigment. compounds) B is prepared,
The composition (A) and the composition (B) are mixed in a ratio of 4 ± 0.5: 6 ± 0.5 parts by weight to provide a composition for an environmentally friendly polyurethane track, characterized in that the polyurethane track. The method of claim 1,
Glycols used in the composition (A) is an environment characterized in that at least one selected from ethylene glycol (Monoethylene glycol), polyalkylene glycol (Polyalkylene glycol), propylene glycol (Propylene glycol) is used Composition for an affinity type polyurethane track. The method of claim 1,
Diamines used in the composition (B) are hexamethylenediamine, ethylenediamine, ethylenediamine, propylenediamine, butylenediamine, butylenediamine, trimethylenediamine, tetramethylenediamine (Tetramethylene diamine), Polyoxypropylene diamine, Hexamethylene diamine, 1,2-diaminomethane, N, N-dimethylpropylenediamine, One or more of tetraacetylethylenediamine (TAED, Tetraacetylethylenediamine), di- (β-Phenylisopropyl) amine, Di-N-Butyl amine, and Q-amine It is selected and used, The composition for environmentally friendly polyurethane tracks characterized by the above-mentioned. The method of claim 1,
The plasticizer used in the composition (B) is a phthalate-based, adipate-based, trimellitate-based, epoxy-based, phosphoric-based, polyester-based polyester. An environment-friendly polyurethane track composition, characterized in that at least one plasticizer is selected and used. The method of claim 1,
Inorganic ceramic fillers used in the composition (B) are borate, serpentine, acid clay, iron oxide, iron oxide, garnet and carbonate minerals having a size of 50 μm or less. Minerals, Attapulgite, Sepiolite, Nephrite, Barite, Hectorite and Fly ash are selected and used. An environmentally friendly polyurethane track composition.

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