JP2002129024A - Resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an excellent resin composition capable of producing a molded product which exerts a warming effect by far infrared-ray. SOLUTION: The composition is obtained by compounding a molded sintered body, which is obtained by compounding a ceramic raw material and at least one of metal oxide, metallic germanium or germanium oxide, with a synthetic polymer material selected from a synthetic resin or an elastomer material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin composition excellent in thermal action by far-infrared radiation obtained by adding a compounded sintered body containing a ceramic raw material to a synthetic resin or elastomer material, and in particular, to far-infrared radiation. And a resin composition suitably used in various fields such as a cultivation bed, a cultivation net, a cultivation sheet, and a seedling raising pot.

[0002]

2. Description of the Related Art Conventionally, synthetic resin materials such as vinyl chloride resin, polyurethane resin, polyacryl resin, polyamide resin, polyester resin, and polyamino acid resin, or elastomer materials are lighter and more in comparison with metal materials. It is used in various fields such as cultivation articles, for example, cultivation beds, cultivation nets, cultivation sheets, seedling raising pots, etc. because of its softness and easy-to-use surface.

[0003]

It is important that the synthetic resin material or the elastomer material used for the above-mentioned applications has a good growth condition of the plant in the natural environment, especially when used for plant cultivation. What can give a sufficient heat effect to plants has been demanded. However, at present, a resin composition having such a heating effect has not yet been developed. Then, an object of the present invention is to provide an excellent resin composition which can obtain a molded article having a thermal effect by far-infrared rays.

[0004]

Means for Solving the Problems The present inventor has conducted intensive studies to solve the above-mentioned problems, and as a result, a synthetic ceramic material, a specific metal oxide, a specific metal oxide, By forming a molded sintered body containing germanium or germanium oxide into a resin composition obtained by adding it to a synthetic polymer material, an excellent resin composition exhibiting a thermal effect by radiating far-infrared rays is obtained. The inventors have found that the present invention has been completed, and have completed the present invention. That is, the resin composition of the present invention is obtained by mixing a ceramic raw material, at least one kind of metal oxide, and metal germanium or germanium oxide, and molding and sintering the same. It is obtained by blending in a selected synthetic polymer material, and specific examples of the synthetic resin include vinyl chloride resin, polyurethane resin, polyacrylic resin, polyamide resin, polyester resin, polyamino acid resin, and polyolefin. It is preferably at least one selected from the group consisting of a system resin, an epoxy resin and a silicone resin. Also,
The ceramic raw material is any of zirconia, titania, cordierite, and alumina, and the metal oxide is at least one selected from iron, manganese, cobalt, copper, chromium, nickel, barium, zinc, calcium, and potassium. Preferably, it is a seed oxide.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. Examples of the synthetic polymer material used in the present invention include a synthetic resin and an elastomer material, and a synthetic resin is particularly preferable. First, the synthetic resin is not particularly limited, and may be any of a thermoplastic resin and a thermosetting resin. Specifically, a vinyl chloride resin, a polyurethane resin, a polyacrylic resin, a polyamide resin, and a polyester resin And at least one resin selected from the group consisting of polyamino acid resins, polyolefin resins, epoxy resins and silicone resins. Among these, a vinyl chloride resin and a silicone resin are particularly preferably employed.

Examples of the vinyl chloride resin include vinyl chloride homopolymer, vinyl chloride-vinyl acetate copolymer, vinyl chloride-vinylidene chloride copolymer, vinyl chloride-ethylene copolymer and ethylene-vinyl acetate copolymer. And vinyl chloride copolymers such as copolymers obtained by graft-polymerizing vinyl chloride to a polymer.

A polyurethane resin is a resin synthesized from polyisocyanate (a compound having two or more isocyanate groups in one molecule and a compound having two or more polyols). Examples of the polyisocyanate include tolylene diisocyanate, diphenylmethane diisocyanate, polymethylene polyphenyl polyisocyanate, tolidine diisocyanate, naphthalene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, xylylene diisocyanate, hydrogenated xylylene diisocyanate, and dicyclohexyl methane diisocyanate. Examples of the polyol include polypropylene glycol and its modified product, polytetramethylene glycol and its modified product, polymer polyol, polyether polyamine, condensation polyester polyol, lactone polyester polyol, polycarbonate polyol, polybutadiene polyol, acrylic polyol, Ethylene-vinyl acetate copolymers, phenolic polyols, phosphorus-containing polyols, halogen-containing polyols, and the like.

[0008] The polyacrylic resin is a resin mainly composed of a polymer of acrylic acid, methacrylic acid and derivatives thereof, and includes polymers such as methyl acrylate, ethyl acrylate, methyl methacrylate, and acrylonitrile.
Copolymers with vinyl acetate, vinyl chloride, styrene and the like are also included.

As the polyamide resin, polycondensation of dicarboxylic acid and diamine, polycondensation of ω-aminocarboxylic acid, ω
A resin synthesized by ring-opening polymerization of a lactam composed of aminocarboxylic acid, for example, a polycondensate of tetramethylenediamine and adipate (nylon 46), ε
A ring-opening polymer of caprolactam or ε-aminocaproic acid (nylon 6), a polycondensate of hexamethylenediamine and adipate (nylon 66), a polycondensate of hexamethylenediamine and sebacate (nylon 610),
Polycondensate of hexamethylenediamine and dodecane diacid salt (nylon 612), ring-opening polymer of ε-aminoundecanoic acid (nylon 11), ε-laurolactam or ε-
A ring-opening polymer of aminododecanoic acid (nylon 12) can be mentioned.

A polyester resin is a resin obtained by a polycondensation reaction between a dibasic acid or a dibasic acid ester and a dihydric alcohol and having an ester bond in the main chain. Examples of dibasic acids include phthalic anhydride, isophthalic acid, terephthalic acid, succinic acid, succinic anhydride, adipic acid, azelaic acid, sebacic acid, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, tetrabromophthalic anhydride, tetrachloro Examples thereof include phthalic anhydride, acetic anhydride, endmethylenetetrahydrophthalic anhydride, maleic anhydride, fumaric acid, and itaconic acid, and examples of the dibasic ester include dimethyl terephthalate and dimethyl naphthalenedicarboxylate. Examples of the dihydric alcohol include ethylene glycol, propylene glycol, 1,3-butylene glycol, 1,6-hexanediol, diethylene glycol, dipropylene glycol, neopentyl glycol, triethylene glycol, hydrogenated bisphenol A, bisphenol dihydroxypropyl ether, 1,4-butanediol, cyclohexane dimethanol and the like can be mentioned.

The polyamino acid-based resin is a polymer obtained by condensation polymerization of an α-amino acid through a peptide bond. As polyolefin resins, ethylene, propylene,
Olefins such as butene, butadiene, isoprene, and homopolymers of diolefins such as pentadiene, or copolymers of any combination thereof, specifically, low-density polyethylene, high-density polyethylene, polypropylene, ethylene -Propylene copolymer, polybutadiene, polyisoprene and the like.

The epoxy resin is obtained by a polymerization reaction between a polyfunctional epoxy compound and a polyamine curing agent such as diethylenetriamine or diaminodiphenylmethane, or a polyhydric phenol compound such as bisphenol A or a polyhydric alcohol compound. A resin, for example, a bisphenol A type epoxy resin obtained from epichlorohydrin and bisphenol A, a cycloaliphatic epoxy resin obtained from epichlorohydrin and a cycloaliphatic derivative such as cyclopentadiene, and a glycidylamine type obtained from epichlorohydrin and hydantoin. An epoxy resin, an epoxy resin obtained from a polyvalent epoxy compound and a polyvalent amine compound, an epoxy resin obtained from a polyvalent epoxy compound and a polyhydric alcohol compound, and the like are exemplified. The silicone resin is not particularly limited as long as it is a commonly used one. These synthetic resins can be used as a mixture of two or more kinds in any combination.

The elastomer material is not particularly limited as long as it is commonly used, and examples thereof include a thermoplastic elastomer, a natural rubber, and a synthetic rubber. Of these, thermoplastic elastomers, particularly olefin-based thermoplastic elastomers, are preferred.

The ceramic raw material used in the resin composition of the present invention is a commonly used material, which is in the form of a powder, particularly preferably zirconia, titania, cordierite, alumina or the like.

The metal oxide used in the resin composition of the present invention functions as an infrared radiation material and has a heating effect. Such metal oxides are not particularly limited, but include, for example, iron, manganese, cobalt, copper,
Oxides of chromium, nickel, barium, zinc, calcium and potassium are preferred.

Next, the metal germanium or germanium oxide used in the resin composition of the present invention is characterized in that it is blended with the above-mentioned metal oxide, and these alone have the maximum peak of the emission wavelength. In addition to having a peak near 12 μm, it also has high peaks near 20 μm, 30 μm, and 45 μm. Generally, wavelength 5.
Since far-infrared rays of 6 μm or more have a favorable thermal effect, together with the metal oxide, a peak of the emission wavelength of the radiator is provided in a wavelength range exceeding 10 μm, and infrared rays radiated from the radiator are reduced. The far-infrared ray has a small proportion occupied by the wavelength region of 5 μm or less. Thereby, when the resin composition of the present invention is used as a cultivation article, a heating effect can be caused to a deep part of the cultivation article, and the growth can be activated.

The resin composition of the present invention comprises a synthetic polymer material 1
The mixing ratio is preferably in the range of 5 to 50 parts by weight with respect to 00 parts by weight. Further, it is preferable that the mixing ratio of the above-mentioned metal oxide is in the range of 5 to 20 parts by weight with respect to 100 parts by weight of the ceramic raw material. Further, metal germanium may be in a range of 1 to 10 parts by weight with respect to 100 parts by weight of the ceramic raw material, and germanium oxide may be in a range of 2 to 20 parts by weight with respect to 100 parts by weight of the ceramic raw material. preferable.

In the present invention, in addition to the above-mentioned components, if necessary, various additives commonly used in a synthetic polymer material to give desired properties, ie, an antioxidant, Stabilizers, antistatic agents, flame retardants, lubricants, plasticizers, antibacterial agents, and other inorganic fillers and organic fillers for reinforcement and the like can also be added.

The object of the present invention is to mix a metal oxide and a metal germanium or a germanium oxide into the above ceramic raw material, form and sinter them into granules, and add and mix them into the above synthetic polymer material. Is obtained.

The resin composition of the present invention can be formed into various molded articles according to a conventional synthetic polymer material, particularly a synthetic resin molding method.
It is preferably applied as a cultivation net, a cultivation sheet, or a nursery pot. Such a method of processing the resin composition of the present invention is not particularly limited, and the resin composition can be processed according to each purpose. For example, examples of the molding method include extrusion molding, injection molding, compression molding, sheet molding, hollow molding, vacuum molding, and calendar molding.

[0021]

EXAMPLES Hereinafter, specific embodiments of the present invention will be described with reference to Examples and Comparative Examples, but the present invention is not limited to these descriptions. (Example 1) 25 parts by weight of clay, 7 parts by weight of iron oxide, 1.5 parts by weight of manganese dioxide, based on 100 parts by weight of zircon sand powder having a composition of 66% of ZrO _{2 and} 34% of SiO ₂
0.5 part by weight of cobalt oxide and 15 parts by weight of germanium oxide were blended and molded and sintered to obtain a granular form. The granules were added and blended with 15 parts by weight of the granules with respect to 100 parts by weight of the pulverized vinyl chloride resin molded product to obtain a resin composition. Using this resin composition, a black sheet having a thickness of 0.5 mm and a length and width of 150 mm was prepared by press molding. This sheet is placed in a vinyl house, on which the growing melon is placed.
The change with time was examined. The growth state of the melon was examined 1 week, 2 weeks, and 3 weeks after placing, and as a result, the growth was fast and favorable due to the far-infrared ray effect.

(Example 2) 10 parts by weight of manganese dioxide, 5 parts by weight of iron oxide, 3 parts by weight of calcium oxide and 5 parts by weight of metal germanium were mixed with 100 parts by weight of an alumina-based ceramic material, and formed and sintered. And granulated. The granules were added and blended with 15 parts by weight of the granules with respect to 100 parts by weight of the pulverized vinyl chloride resin molded product to obtain a resin composition. Using this resin composition, a black sheet having the same shape as in Example 1 was produced. The sheet was placed in a vinyl house, and a melon in the middle of growth was placed on the sheet, and the change over time in the growth state of the melon was examined. The growth state of the melon was examined 1 week, 2 weeks, and 3 weeks after placing, and as a result, the growth was fast and favorable due to the far-infrared ray effect.

Example 3 66% ZrO ₂ , SiO ₂ 3
For 100 parts by weight of zircon sand powder having a composition of 4%,
25 parts by weight of clay, 7 parts by weight of iron oxide, 1.5 parts by weight of manganese dioxide, 0.5 parts by weight of cobalt oxide, and 15 parts by weight of germanium oxide were blended, molded and sintered to obtain granules. The granules were added to and mixed with 15 parts by weight of the granules based on 100 parts by weight of the silicone resin to obtain a resin composition. A net was prepared using this resin composition. The net was placed in a vinyl house, and a melon in the middle of growth was placed on the net, and the time-dependent change in the growth state of the melon was examined. The growth state of the melon was examined 1 week, 2 weeks, and 3 weeks after placing, and as a result, the growth was fast and favorable due to the far-infrared ray effect.

Example 4 10 parts by weight of manganese dioxide, 5 parts by weight of iron oxide, 3 parts by weight of calcium oxide and 5 parts by weight of metal germanium were mixed with 100 parts by weight of an alumina-based ceramic material, and formed and sintered. And granulated. This granular material was added and blended with 15 parts by weight of the granular material with respect to 100 parts by weight of the silicone resin (as before) to obtain a resin composition. Using this resin composition, a net having the same shape as in Example 3 was produced. When this net was used as a filter for a water purifier, the water was purified.

(Results of Evaluation) As is clear from the results of the examples, molded articles (sheets, sheets, etc.) using the resin composition of the present invention were used.
In the case of (Net), a sufficient molded body having a far-infrared ray effect was obtained because the thermal action was sufficiently exhibited as a whole.

[0026]

According to the resin composition of the present invention, it is possible to obtain a molded article capable of efficiently radiating far-infrared rays, so that it can be suitably used as a cultivation article. It is useful for sheets for seedlings, seedling pots, and the like, and its industrial utility value is extremely high.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) C08K 3/22 C08K 3/22 F term (reference) 2B024 DB01 DB04 2B027 NC02 NC16 NC18 NC24 ND01 ND03 4J002 AA001 BB001 BD031 BG001 CD001 CF001 CK021 CL001 CL021 CM041 CP031 DA116 DE056 DE066 DE086 DE096 DE106 DE116 DE136 DE146 GA00 GG01

Claims (3)

[Claims] 1. A sintered body formed by blending a ceramic raw material, at least one kind of metal oxide, and metal germanium or germanium oxide, and molding and sintering the mixture. A resin composition characterized by being blended with a molecular material. 2. The synthetic resin is selected from the group consisting of vinyl chloride resin, polyurethane resin, polyacrylic acid resin, polyamide resin, polyester resin, polyamino acid resin, polyolefin resin, epoxy resin and silicone resin. 2. The resin composition according to claim 1, which is at least one kind. 3. The ceramic raw material is zirconia,
Titania, cordierite, or alumina, and the metal oxide is at least one oxide selected from iron, manganese, cobalt, copper, chromium, nickel, barium, zinc, calcium, and potassium The resin composition according to claim 1.