JPH10316818A - Paving formed product and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare the subject formed product capable of exhibiting excellent cushioning property, durability, abrasion resistance, etc., by pulverizing waste materials of vinyl chloride resin, adding specific amounts of specific fine powders of vulcanized rubbers and a urethane binder to the resultant fine powder and subjecting the obtained mixture to a urethane processing. SOLUTION: This formed product is obtained by adding (C) a urethane binder to a mixture of (A) vinyl chloride resin powder and (B) vulcanized rubber powder, and the resultant mixture is formed into sheets. Preferably, that mixture is prepared by mixing 60-40 pts.wt. of the component A having particle diameters of 1-5 mmϕ and 40-60 pts.wt. of the component B having particle diameters of 1-5 mmϕ, and to 100 pts.wt. of the resultant mixture is added 20-30 pts.wt. of the component C. As the component A, products obtained by pulverizing waste materials of thermoplastic vinyl chloride film or sheet with a crusher can be used. Further, as the component B, products obtained by pulverizing waste materials of industrial rubber products with a crusher can be used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a park sidewalk, a shopping street sidewalk, a promenade, a facility for exercise, for example, an athletic stadium, an indoor gymnasium, a golf course walk path, a ball court coat, a joking court.
TECHNICAL FIELD The present invention relates to a pavement molded product used for pavement of tennis, tennis courts, poolsides, and the like, and a method for producing a pavement molded product.

[0002]

2. Description of the Related Art Conventionally, polyurethane having the highest performance as a material used for pavement of a sidewalk or a facility for exercise is polyurethane, and various types are used. The only drawback is that it is expensive, even if it has high performance and durability with appropriate elasticity. For this purpose, an attempt has been made to reduce the cost by mixing rubber particulates and powders obtained by pulverizing inexpensive old tire scraps and various kinds of industrial-use rubber scraps.

[0003]

However, for example, a pavement using rubber granules and powder obtained from old tire scraps has flexibility and is gentle to the human body.
There is a problem in that the weather resistance and durability are weak.

On the other hand, recently, the amount of waste vinyl chloride resin used for agriculture is increasing in quantity, and furthermore, society's environmental consciousness has become severe, and disposal of the waste has become a problem. I have. Therefore, various investigations were made as to whether or not waste vinyl chloride resin could be used as a material for paving materials.

[0005] Various tests were conducted on elastic pavements using a waste material of vinyl chloride resin as a powder and a binder of urethane. However, a molded article for pavement comprising only vinyl resin powder has extremely poor cushioning properties and has a poor sidewalk. It was not suitable for use as a pavement material for sports facilities or sports facilities, for example, grounds. Therefore, as a result of repeated research on adding cushioning properties by adding various rubber powders, it was possible to obtain a product having excellent cushioning properties, durability and abrasion resistance as a pavement material by using vulcanized rubber.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to pulverize a waste material of a vinyl chloride resin, and to specify a vulcanized rubber and a urethane binder as specific fine powder. By adding urethane and processing urethane, inexpensive, good cushioning and weather resistance, abrasion resistance, in addition to using colored vulcanized rubber, rich colored pavement molding and It is to provide a manufacturing method thereof.

[0007]

In order to achieve the above object, a molded article for pavement and a method for producing a molded article for pavement according to the present invention are characterized in that a mixture of a vinyl chloride resin powder and a vulcanized rubber powder is mixed with urethane. It is obtained by mixing a binder. Also,
A urethane binder is mixed with a mixture obtained by mixing a vinyl chloride powder obtained by crushing a waste material of a thermoplastic vinyl chloride film or a vinyl sheet and a vulcanized rubber powder obtained by crushing a waste material of an industrial article with a mixer. Characterized in that it is formed from a polyurethane mixture that has been reacted.

Further, a urethane binder is added to 100 parts by weight of a mixture obtained by mixing 60 to 40 parts by weight of a vinyl chloride resin powder having a particle diameter of 1 to 5 mmφ and 40 to 60 parts by weight of a vulcanized rubber powder having a particle diameter of 1 to 5 mmφ. Is mixed with 20 to 30 parts by weight, and the particle size of the thermoplastic vinyl chloride film or vinyl sheet waste obtained by grinding is 1 to 5 parts.
A mixture 100 obtained by mixing 60 to 40 parts by weight of a vinyl chloride powder having a diameter of 1 mm and 40 to 60 parts by weight of a vulcanized rubber powder having a particle diameter of 1 to 5 mm obtained by pulverizing a waste material of an industrial product with a mixer.
It is characterized by being formed from a polyurethane mixture obtained by mixing and reacting 20 to 30 parts by weight of a urethane binder with respect to parts by weight.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION
It is manufactured by mixing a urethane binder with a mixture of a vinyl chloride powder and a vulcanized rubber powder, and molding the mixture into a sheet.

The molded article for paving in the present invention is a mixture of 60 to 40 parts by weight of a vinyl chloride powder having a particle diameter of 1 to 5 mmφ and 40 to 60 parts by weight of a vulcanized rubber powder having a particle diameter of 1 to 5 mmφ. 20 to 30 parts by weight of a urethane binder is mixed with 100 parts by weight, and the mixture is sealed.
It is preferable to manufacture it by molding into a shape.

As the vinyl chloride powder used in the present invention, for example, a waste material of a thermoplastic vinyl chloride film or vinyl sheet used for agriculture is pulverized by a pulverizer. The particle size of the powder is 1-5 mmφ, 5 mm
If the diameter is larger than φ, the space between the particles is too wide and the particles become flexible. 1mm
If the diameter is less than φ, the space between the particles becomes dense and hardens.

As the vulcanized rubber powder used in the present invention, waste materials of industrial rubber products are made into powder by a crusher. The particle size of the powder is the same as that of the vinyl chloride powder. In particular, waste materials of industrial products using acrylonitrile rubber, such as hoses and marine hoses.

The urethane binder used in the present invention
Are compounds comprising, as active hydrogen-containing compounds, for example, polyether polyols, polyester polyols, organic polyisocyanates, catalysts, additives and the like.

The urethane binder has an isocyanate group having a molecular terminal of 1 to 15% by weight, preferably 2 to 12% by weight.
Weight percent, which can be used for diluting urethane resin, toluene, xylene, methyl ethyl ketone,
It is a urethane prepolymer which may contain one or more solvents such as ethyl acetate, 1,1,1 trichloroethane and the like. Preferably, the solid content of the urethane resin is 70% by weight or more, and the number of functional groups is 2 to 2. 6 / molecule, preferably 2
３3 / molecule.

As the polyetherpolyols, any of the polyethers conventionally used in the production of polyurethane foams can be used, for example, ethylene glycol,
Diethylene glycol, propylene glycol, dipropylene glycol, 1,3-butanediol, 1,4-butanediol, 1,6-butanediol, neopentyl glycol
And polyphenol monomers such as phenol, bisphenol A, trimethylolethane, trimethylolpropane, glycerin and sorbitol.

Further, these monomers and amine monomers such as ethylenediamine, urea, monomethyldiethanolamine, monoethyldiethanolamine, and the like, as well as ethylene oxides such as ethylene oxide, propylene oxide, butylene oxide, and styrene oxide Can be used alone, or copolymers, or polyetherpolyols comprising a mixture of these polymers can be used.

Further, as polyester polyols,
A condensate of a polybasic acid and a polyhydric alcohol is used,
For example, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,3-butanediol, 1,4- Butanediol,
Examples thereof include polyester polyols having terminal OH groups obtained by reaction with 1,6-hexanediol or the like alone or as a mixture. Preferably, polyester polyols which are liquid at room temperature and easy to handle can be used.

As the organic isocyanates, any of organic polyisocyanates used in the production of polyurethane foams can be used. For example, 2,4-tolylene diisocyanate, 2,6-triisocyanate Range tricyanate, 2,4- / 2,6 = 6
5/35 (wt) tolylene diisocyanate, 2,4- / 2,6 = 80/20 (w
t) tolylene diisocyanate, 4,4'-diphenylmethane diisocyanate, hexamethylene diisocyanate,
Phenylene diisocyanate, 1,5-naphthalene diisocyanate, meta-xylene diisocyanate, hydrogenated 4,4 '
-Diphenylmethane diisocyanate, crude tolylene diisocyanate, polymethylene polyphenyl isocyanate and the like.

These can be used alone or as a mixture thereof. Further, those comprising a prepolymer having a terminal isocyanate group obtained by reacting the above-mentioned polyetherpolyols or polyesterpolyols with organic polyisocyanates alone or a mixture thereof can also be used. A catalyst, an additive, a thickener and the like are added to these and used.

These polyurethane binders are used. In the present invention, commercially available products of Takeda Pharmaceutical Co., Ltd. and Daiichi Kogyo Seiyaku Co., Ltd. are used.

When the molded article for pavement of the present invention is formed into a molded article in a factory, the molded article is made of a thermoplastic vinyl chloride film or vinyl sheet waste material and has a particle diameter of 1 to 5 mm. Vulcanized rubber powder 40 to 6 having a particle diameter of 1 to 5 mmφ prepared from waste parts of industrial parts and industrial supplies
0 parts by weight were mixed with a mixer, and 20 to 30 parts by weight of a urethane binder was mixed with 100 parts by weight of the mixture, and the reacted polyurethane mixture for pavement was poured into a prescribed mold to form a sheet. It is manufactured by molding.

When a molded article is to be formed at the construction site, a particle size of 1 particle produced from the waste material of the thermoplastic vinyl chloride film or vinyl sheet is also used by using a mixer at the construction site.
60 to 40 parts by weight of a vinyl chloride powder having a diameter of 1 to 5 mm and 40 to 60 parts by weight of a vulcanized rubber powder having a particle diameter of 1 to 5 mm formed from waste materials of industrial supplies are mixed by a mixer, and the mixture is mixed with 100 parts by weight. , Urethane binder 20-30
The mixture is poured into a mold that borders the road on which the pavement polyurethane mixture mixed and reacted is applied, or is poured onto a ground such as a stadium.

The vulcanized rubber which is the raw material of the pavement molded product of the present invention is a waste material of industrial rubber products. In particular, a colored industrial rubber product is selected, and the colored product is pulverized to obtain a colored powder. When a pavement molded article is formed by using, a colorful design can be obtained, and a decorative sidewalk or ground can be obtained.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on embodiments.
The present invention is not limited to this. Pavement moldings were manufactured according to the formulations shown in Table 1, and the performance was evaluated. Example 1 uses a vinyl chloride powder and a vulcanized rubber powder. Example 1 shown in Table 1 is a mixture of 50 parts by weight of a vinyl chloride powder and 50 parts by weight of a vulcanized rubber (using an old tire). Example 2 is a mixture of 50 parts by weight of vinyl chloride powder and 50 parts by weight of vulcanized rubber (using waste colored industrial rubber products other than old tires). Comparative Example 1 used the vinyl chloride powder alone, and Comparative Example 2 used the vulcanized rubber powder alone.

[0025]

[Table 1]

Performance test Test equipment using spike test method Athletic durability test Test conditions Spike spike; spike pin for golf shoes Load; 50 kg speed; 120 rpm / min. Number of shots; 1000 shots; 240 cm ² Evaluated in this performance test .

As shown in Table 1 above, when the vulcanized rubber powder was added to the vinyl chloride powder of the present invention, a superior wear rate was obtained, and the cushioning property was improved. You can see that it has improved.

[0028]

Since the present invention has the above configuration,
By finely pulverizing waste vinyl chloride resin, adding a specific amount of vulcanized rubber and urethane binder in a specific amount to a specific amount and subjecting it to urethane processing, cushioning, durability and abrasion resistance are excellent. In addition, a colorful and decorative pavement molding can be provided.

In the molded article for pavement of the present invention, the vinyl chloride powder is a powder mainly obtained by pulverizing a waste material of a thermoplastic vinyl chloride film or vinyl sheet, and the vulcanized rubber is a powder of an industrial rubber product. Since the powder is obtained by crushing waste materials, it is possible to reduce the cost of equipment for sidewalks and exercise facilities, and to help the effective use of waste and eliminate the problem of waste pollution. Play.

Continuing from the front page (72) Inventor Kanehara Kasahara 1241-1 Kishimotocho, Saihaku-gun, Tottori Pref.

Claims (4)

[Claims] 1. A molded article for pavement comprising a mixture of a vinyl chloride resin powder and a vulcanized rubber powder mixed with a urethane binder. 2. A mixture obtained by mixing a vinyl chloride powder obtained by pulverizing a waste material of a thermoplastic vinyl chloride film or a vinyl sheet and a vulcanized rubber powder obtained by pulverizing a waste material of an industrial product with a mixer. A method for producing a molded article for pavement, characterized by being formed from a polyurethane mixture obtained by mixing and reacting a binder. 3. A urethane binder is added to 100 parts by weight of a mixture of 60 to 40 parts by weight of a vinyl chloride resin powder having a particle diameter of 1 to 5 mmφ and 40 to 60 parts by weight of a vulcanized rubber powder having a particle diameter of 1 to 5 mmφ. A pavement molded product, characterized in that 20 to 30 parts by weight of-is mixed. 4. A particle size obtained by pulverizing a waste material of a thermoplastic vinyl chloride film or vinyl sheet having a particle size of 1 to 5 mmφ.
Vulcanized rubber powder 40 having a particle diameter of 1 to 5 mmφ obtained by grinding 60 to 40 parts by weight of vinyl chloride powder
A molded article for pavement comprising a polyurethane mixture obtained by mixing and reacting 20 to 30 parts by weight of a urethane binder with respect to 100 parts by weight of a mixture obtained by mixing up to 60 parts by weight with a mixer. Manufacturing method.