JPH0891902A - Artificial stone and method for producing the same - Google Patents
Artificial stone and method for producing the sameInfo
- Publication number
- JPH0891902A JPH0891902A JP25019494A JP25019494A JPH0891902A JP H0891902 A JPH0891902 A JP H0891902A JP 25019494 A JP25019494 A JP 25019494A JP 25019494 A JP25019494 A JP 25019494A JP H0891902 A JPH0891902 A JP H0891902A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- stone
- artificial stone
- inorganic filler
- matrix resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0085—Thixotropic agents
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は人工石およびその製造方
法に関するものであり、さらに詳しくは着色樹脂粒子及
び／又は天然石や無機充填材などをマトリックス樹脂中
に均一に分散させた人工大理石などの人工石およびその
人工石を容易に製造する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial stone and a method for producing the same. More specifically, the present invention relates to an artificial marble in which colored resin particles and / or natural stone, an inorganic filler and the like are uniformly dispersed in a matrix resin. The present invention relates to an artificial stone and a method for easily producing the artificial stone.
【０００２】[0002]
【従来の技術】従来、不飽和ポリエステル樹脂やメチル
メタクリレートなどのマトリックス樹脂中にガラスフリ
ットや水酸化アルミニウム等の無機質微紛末充填材、天
然石砕石、着色樹脂粒子、着色雲母などを配合したもの
を混合し、型に流し込んで硬化させて人工大理石などの
人工石が製造されている。しかしマトリックス樹脂、無
機質微紛末充填材、天然石砕石、着色樹脂粒子、着色雲
母などをあらかじめ均一に混合しても、これらの比重の
違いにより硬化するまでの時間中に比重の大きいものが
重力沈下し、材料の分離が生じて不均一な分布となり、
石目模様の粗密が発生して外観が著しく損なわれるとい
う問題があった。そのために、マトリックス樹脂の粘度
を大きくしたり、比重の大きい砕石などの比重を小さく
して対処する方法が提案されているが、マトリックス樹
脂や砕石などの材質が極めて限定され、好みの石目模様
を表現するのが困難であった。2. Description of the Related Art Conventionally, a matrix resin such as unsaturated polyester resin or methyl methacrylate is mixed with inorganic fine powder filler such as glass frit or aluminum hydroxide, crushed natural stone, colored resin particles, colored mica. Artificial stones such as artificial marble are manufactured by mixing, pouring into a mold and hardening. However, even if the matrix resin, inorganic fine powder filler, crushed natural stone, colored resin particles, colored mica, etc. are uniformly mixed in advance, due to the difference in their specific gravities, the one with a large specific gravity during the time until hardening is caused However, separation of the material occurs, resulting in an uneven distribution,
There is a problem that the appearance of the stone pattern is deteriorated and the appearance is significantly impaired. For this reason, methods have been proposed to increase the viscosity of the matrix resin or reduce the specific gravity of crushed stone with a large specific gravity, but the materials for the matrix resin and crushed stone are extremely limited, and the stone pattern of your choice Was difficult to express.
【０００３】成形型に砕石を混合したゲルコート層を塗
布し、硬化させた後、成形裏型をセットし、型内に透光
性樹脂層を注型、固化し、次にこの上に不透光性樹脂層
を注型し固化させて製造する３層構造を有する石目調人
工大理石が提案されている（特開平４−１６００４４号
公報）が、比重の大きいものの重力沈下の問題は改良さ
れるが、多数の工程を要し、煩雑であり、コストアップ
になる欠点がある。A gel coat layer containing crushed stones is applied to a molding die and hardened, and then a molding back mold is set, and a transparent resin layer is cast and solidified in the mold, and then an impervious layer is formed thereon. A stone-grained artificial marble having a three-layer structure produced by casting and solidifying a light-sensitive resin layer has been proposed (Japanese Patent Laid-Open No. 4-160044), but the problem of gravity settlement is improved although the specific gravity is large. However, there are drawbacks that it requires a large number of steps, is complicated, and increases the cost.
【０００４】[0004]
【発明が解決しようとする課題】本発明の目的は、着色
樹脂粒子及び／又は天然石や無機充填材などをマトリッ
クス樹脂中に均一に分散させた人工石およびその人工石
を容易に製造する方法を開発することである。SUMMARY OF THE INVENTION An object of the present invention is to provide an artificial stone in which colored resin particles and / or natural stone or an inorganic filler is uniformly dispersed in a matrix resin, and a method for easily producing the artificial stone. It is to develop.
【０００５】[0005]
【課題を解決するための手段】前記課題を解決するため
に本発明等は鋭意研究を行った結果、マトリックス樹脂
と着色樹脂粒子及び／又は天然石と無機充填材などから
なる樹脂組成物に揺変性付与剤を配合して成形すること
により、比重の大きいものの重力沈下が防止でき、着色
樹脂粒子及び／又は天然石や無機充填材などをマトリッ
クス樹脂中に均一に分散させた人工石が容易に得られる
ことを見いだし本発明を完成するに到った。[Means for Solving the Problems] In order to solve the above-mentioned problems, as a result of intensive studies of the present invention, a thixotropic resin composition comprising a matrix resin and colored resin particles and / or a natural stone and an inorganic filler is thixotropic. By compounding with an imparting agent, it is possible to prevent gravity sinking even though it has a large specific gravity, and it is easy to obtain an artificial stone in which colored resin particles and / or natural stones or inorganic fillers are uniformly dispersed in a matrix resin. As a result, they have completed the present invention.
【０００６】本発明の請求項１の発明は、マトリックス
樹脂と着色樹脂粒子及び／又は天然石と無機充填材など
からなる人工石において、揺変性付与剤を配合したこと
を特徴とする人工石である。The invention according to claim 1 of the present invention is an artificial stone comprising a matrix resin, colored resin particles and / or natural stone and an inorganic filler, and an artificial stone containing a thixotropic agent. .
【０００７】本発明の請求項２の発明は、マトリックス
樹脂１００重量部に対して揺変性付与剤を０．１〜５．
０重量部配合したことを特徴とする請求項１記載の人工
石である。According to the second aspect of the present invention, the thixotropic agent is added in an amount of 0.1-5.
The artificial stone according to claim 1, wherein 0 part by weight is blended.
【０００８】本発明の請求項３の発明は、マトリックス
樹脂と着色樹脂粒子及び／又は天然石と無機充填材など
からなる成形用材料に揺変性付与剤を配合し、揺変度を
１．２〜４．０に調整した後、成形することを特徴とす
る請求項１記載の人工石の製造方法である。According to a third aspect of the present invention, a thixotropic agent is added to a molding material composed of a matrix resin and colored resin particles and / or natural stone and an inorganic filler, and the thixotropic degree is 1.2 to. The method for producing an artificial stone according to claim 1, wherein the method is performed after adjusting to 4.0.
【０００９】[0009]
【作用】不飽和ポリエステル樹脂やメチルメタクリレー
トなどのマトリックス樹脂中にガラスフリットや水酸化
アルミニウム等の無機質微紛末充填材、天然石砕石、着
色樹脂粒子、着色雲母などを配合した樹脂組成物に超微
細のシリカなどの揺変性付与剤を一定量配合すると、樹
脂組成物は大きな揺変性を持ち、型内に注入された場
合、あるいは透明樹脂層をあらかじめ塗布された型内に
注入された場合、樹脂組成物が硬化するまでの時間中、
比重の大きいものの重力沈下が防止できるので、着色樹
脂粒子及び／又は天然石や無機充填材など（以下、無機
充填材など、と略す）をマトリックス樹脂中に均一に分
散させた人工石が容易に得られる。[Function] Ultra fine resin composition containing unsaturated polyester resin, matrix resin such as methyl methacrylate, inorganic fine powder filler such as glass frit and aluminum hydroxide, natural stone crushed stone, colored resin particles, colored mica, etc. When a certain amount of thixotropic agent such as silica is blended, the resin composition has a large thixotropic property, and when injected into a mold, or when a transparent resin layer is injected into a pre-coated mold, the resin During the time until the composition cures,
Although it has a large specific gravity, gravity settlement can be prevented, so an artificial stone in which colored resin particles and / or natural stones or inorganic fillers (hereinafter abbreviated as inorganic fillers) are uniformly dispersed in the matrix resin can be easily obtained. To be
【００１０】また、揺変性付与剤を混合しない樹脂組成
物を型内に注入したり、あるいは透明樹脂層をあらかじ
め塗布した型内に注入する場合、無機充填材などとマト
リックス樹脂との流動抵抗の違いにより、型の注入口付
近は無機充填材などの濃度が小さく、型の抜き孔近傍で
はこれらの濃度が大きくなり製品に色むらができる問題
があるが、揺変性付与剤を混合することにより無機充填
材などをマトリックス樹脂中に均一に分散させた人工石
を容易に得ることができる。When a resin composition containing no thixotropic agent is poured into a mold or a transparent resin layer is preliminarily applied to a mold, the flow resistance between the inorganic filler and the matrix resin is reduced. Due to the difference, there is a problem that the concentration of the inorganic filler is small near the injection port of the mold, and the concentration of these becomes large near the hole of the mold, which may cause color unevenness in the product, but by mixing the thixotropic agent An artificial stone in which an inorganic filler or the like is uniformly dispersed in a matrix resin can be easily obtained.
【００１１】従来、人工石の配合処方としては、見かけ
上の収縮率を下げ、成形クラックを避けるなどために無
機充填材などをできるだけ多量に配合するので、増粘効
果のある超微粒子シリカなどの揺変性付与剤を配合する
ということは行われてなかった。一方、ゲルコート塗装
法の分野において、塗料のタレ防止の目的で超微細シリ
カなどの揺変性付与剤を配合することは一般的技術とし
て行われているが、ゲルコート塗装法では膜厚自体が薄
く、膜中で比重の大きい配合物が沈下（沈殿）するとい
った問題は全くなっかた。Conventionally, as a compounding recipe for artificial stones, in order to reduce the apparent shrinkage ratio and avoid molding cracks, inorganic fillers and the like are compounded as much as possible. No thixotropic agent was added. On the other hand, in the field of the gel coat coating method, it is a general technique to mix a thixotropic agent such as ultrafine silica for the purpose of preventing sagging of the paint, but in the gel coat coating method, the film thickness itself is thin, There was no problem that the compound having a large specific gravity was settled (precipitated) in the film.
【００１２】本発明で用いる揺変性付与剤は特に限定さ
れず、具体的にはシリカ超微粉末、酸化アルミニウム、
酸化チタンなどの超微粉末などを挙げることができる。
例えば、超微粒子シリカは屈折率が１．４〜１．６のも
ので、その大きさは２ミリミクロン〜１００ミリミクロ
ン、特に１０ミリミクロン前後のものを用いることが望
ましい。揺変性付与剤の配合量は揺変性付与剤の種類な
どにより変化するので特に限定されるものではない。し
かし通常はマトリックス樹脂１００重量部に対して揺変
性付与剤を０．１〜５．０重量部、好ましくは０．６〜
２．０重量部配合する。揺変性付与剤の配合量が０．１
重量部以下であるとマトリクス樹脂に添加してもその効
果が現れない。また５．０重量部以上になると超高粘度
の状態となり注型作業において材料が流れないという不
都合を生じる。The thixotropic agent used in the present invention is not particularly limited, and specifically, ultrafine silica powder, aluminum oxide,
Ultrafine powder such as titanium oxide can be used.
For example, it is desirable to use ultrafine silica particles having a refractive index of 1.4 to 1.6 and a size of 2 mm to 100 mm, especially about 10 mm. The blending amount of the thixotropic agent varies depending on the type of the thixotropic agent and is not particularly limited. However, usually, the thixotropic agent is added to 0.1 to 5.0 parts by weight, preferably 0.6 to 100 parts by weight of the matrix resin.
Add 2.0 parts by weight. The amount of thixotropic agent added is 0.1
If the amount is less than the weight part, the effect does not appear even if added to the matrix resin. On the other hand, if it is more than 5.0 parts by weight, it will be in an extremely high viscosity state and the material will not flow during the casting operation.
【００１３】本発明の人工石の製造に当たっては、マト
リックス樹脂と無機充填材などからなる成形用材料に揺
変性付与剤を配合し、ローター式回転粘度計を用いて回
転数６ｒｐｍの時と回転数６０ｒｐｍの時の温度２５℃
における粘度を測定し下記式で計算した揺変度を１．２
〜４．０、好ましくは、１．８〜２．５に調整した後、
成形することが好ましい。揺変度が１．２以下であると
無機充填材や着色樹脂粒子等の比重を調整しなければ均
一な人造大理石が得られない。また、揺変度が４．０以
上になると成形における成形作業において、材料が流れ
ないという不都合を生じる。 In producing the artificial stone of the present invention, a thixotropic agent is blended with a molding material composed of a matrix resin and an inorganic filler and the like, and a rotor type rotational viscometer is used at a rotation speed of 6 rpm and a rotation speed. Temperature 25 ℃ at 60 rpm
The thixotropic degree calculated by the following formula after measuring the viscosity at 1.2 is 1.2
~ 4.0, preferably after adjusting to 1.8-2.5,
Molding is preferred. If the degree of thixotropy is 1.2 or less, uniform artificial marble cannot be obtained unless the specific gravity of the inorganic filler, colored resin particles and the like is adjusted. Further, if the degree of rocking is 4.0 or more, there is a problem that the material does not flow in the molding operation in molding.
【００１４】本発明で用いるマトリックス樹脂として
は、熱可塑性樹脂や熱硬化性樹脂を用いることができ
る。熱可塑性樹脂としてはポリエステル、ポリアミド、
ＡＢＳ、ポリスチレン、ポリウレタン、アクリル系樹脂
など、熱硬化性樹脂としては、不飽和ポリエステル、エ
ポキシ樹脂、フェノール系樹脂、メラミン系樹脂、アク
リル系樹脂、ユリア樹脂、アリル系樹脂などを挙げるこ
とができるが、特にこれらに限定されるものではない。As the matrix resin used in the present invention, a thermoplastic resin or a thermosetting resin can be used. As the thermoplastic resin, polyester, polyamide,
Examples of the thermosetting resin such as ABS, polystyrene, polyurethane, and acrylic resin include unsaturated polyester, epoxy resin, phenol resin, melamine resin, acrylic resin, urea resin, and allyl resin. It is not particularly limited to these.
【００１５】マトリックス樹脂として熱可塑性樹脂を用
いると、射出成形法、押出成形法、圧縮成形法、トラン
スファー成形法などの公知の成形法により容易に成形す
ることができ、また、熱硬化性樹脂を用いる場合も、射
出成形法、押出成形法、圧縮成形法、トランスファー成
形法、注型成形法などの公知の成形法により容易に成形
することができる。When a thermoplastic resin is used as the matrix resin, it can be easily molded by a known molding method such as an injection molding method, an extrusion molding method, a compression molding method or a transfer molding method. When used, it can be easily molded by a known molding method such as an injection molding method, an extrusion molding method, a compression molding method, a transfer molding method, or a cast molding method.
【００１６】本発明で用いる着色樹脂粒子及び／又は天
然石は、硬化または固化樹脂の粗粉砕粒子であり熱可塑
性樹脂および／または熱硬化性樹脂の硬化または固化物
を粗粉砕して得られるものである。ここで硬化物とは、
樹脂をそのまま或は架橋剤や架橋助剤等と共に常温ある
いは加熱して硬化したり、紫外線などの放射線を照射し
て硬化させものであり、固化物とは、硬化させることな
く冷却するなどして固化したものである。熱可塑性樹脂
としてはポリエチレン、ポリプロピレンなどのポリオレ
フィン、ポリエステル、ポリアミド、ポリカーボネー
ト、ポリオキシメチレン、ポフェニレンサルファイド、
ＡＢＳ、ポリスチレン、ポリウレタン、アクリル系樹
脂、塩化ビニル系樹脂などを挙げることができるが特に
限定されるものではない。熱硬化性樹脂としては、不飽
和ポリエステル、エポキシ樹脂、フェノール系樹脂、メ
ラミン系樹脂、アクリル系樹脂、ユリア樹脂、アリル系
樹脂などを挙げることができるが特に限定されるもので
はない。しかし、マトリックス樹脂との接着性が良く、
融点がマトリックス樹脂よりも高いものが好ましく用い
られる。形状や寸法などの制約は特にない。粒度分布は
任意に変えることができ、また粗粉砕粒子の配合量、
色、模様なども適宜決めることができ、これらを必要に
応じて組み合わせることにより外観、模様、色、石質感
などの異なる多様な人工石が得られる。The colored resin particles and / or natural stones used in the present invention are coarsely crushed particles of a hardened or solidified resin, and are obtained by roughly crushing a hardened or solidified product of a thermoplastic resin and / or a thermosetting resin. is there. Here, the cured product
The resin can be cured as it is or at room temperature or with a cross-linking agent or a cross-linking auxiliary agent, or it can be cured by irradiating it with radiation such as ultraviolet rays. It is solidified. As the thermoplastic resin, polyolefin such as polyethylene and polypropylene, polyester, polyamide, polycarbonate, polyoxymethylene, pophenylene sulfide,
Examples thereof include ABS, polystyrene, polyurethane, acrylic resin, vinyl chloride resin, and the like, but are not particularly limited. Examples of the thermosetting resin include unsaturated polyester, epoxy resin, phenol resin, melamine resin, acrylic resin, urea resin, and allyl resin, but are not particularly limited. However, the adhesiveness with the matrix resin is good,
Those having a melting point higher than that of the matrix resin are preferably used. There are no particular restrictions on the shape or dimensions. The particle size distribution can be changed arbitrarily, and the blending amount of coarsely crushed particles,
Colors, patterns, etc. can be appropriately determined, and by combining these as necessary, various artificial stones having different appearances, patterns, colors, stone textures, etc. can be obtained.
【００１７】本発明で用いる無機充填材としては、例え
ば天然石の砕石、人工セラミックス、マイカ、ガラス粉
末、ガラスバルーン、ガラス繊維、水酸化アルミニウ
ム、炭酸カルシウムなどを挙げることができる。無機充
填材の形状、寸法、粒度分布、配合量、色、模様などの
制約は特にない。Examples of the inorganic filler used in the present invention include crushed natural stone, artificial ceramics, mica, glass powder, glass balloon, glass fiber, aluminum hydroxide, calcium carbonate and the like. There are no particular restrictions on the shape, size, particle size distribution, blending amount, color, pattern, etc. of the inorganic filler.
【００１８】本発明においては、その使用目的に応じて
架橋剤、架橋助剤、酸化防止剤、滑剤、有機あるいは無
機系顔料、紫外線吸収剤、分散剤、中和剤、可塑剤、核
剤などを適宜添加することができる。In the present invention, a cross-linking agent, a cross-linking aid, an antioxidant, a lubricant, an organic or inorganic pigment, an ultraviolet absorber, a dispersant, a neutralizing agent, a plasticizer, a nucleating agent, etc., depending on the purpose of use. Can be added as appropriate.
【００１９】[0019]
【実施例】次に本発明を実施例によって具体的に説明す
るが、本発明はこの実施例に限定されるものではない。 （実施例１）：メチルメタクリレートホモポリマー或は
コポリマーを３０重量％含有するメチルメタクリレート
重合性シロップに触媒として過酸化ベンゾイル０．０３
重量％および黒色顔料０．０１重量％配合して硬化させ
て硬化物を得た。この硬化物をクラッシャーにより粗粉
砕して平均粒径１０ｍｍの粗粉砕粒子を作った。同シロ
ップに灰色顔料０．０１重量％、同粗粉砕粒子１０重量
％、シリカ超微粉末（屈折率１．４〜１．６、大きさ約
１０ミリミクロン、日本アエロジル社製）１重量％、無
機充填材（炭酸カルシウム粉末、平均大きさ約２０ミク
ロン）１０重量％混合して、揺変度２．０に調整し、図
１に示すように、成形用型（縦３０ｃｍ×横６０ｃｍ×
深さ２ｃｍ）１に注入口２より注型し、シロップ混合物
を硬化、固化させた。次いで成形物４を成形用型１から
取り出し、人工大理石を得た。この人工大理石は無機充
填材など５が均一に分散しており、光沢のある表面を有
し、灰色のマトリックス樹脂の中に黒色の模様を有して
おり、優れた石質感を有する御影石調の人工大理石であ
った。EXAMPLES Next, the present invention will be specifically described by way of examples, but the present invention is not limited to these examples. Example 1 Methyl methacrylate polymerizable syrup containing 30% by weight of methyl methacrylate homopolymer or copolymer benzoyl peroxide 0.03 as a catalyst.
% And a black pigment of 0.01% by weight were mixed and cured to obtain a cured product. The cured product was coarsely crushed by a crusher to prepare coarsely crushed particles having an average particle diameter of 10 mm. In the same syrup, 0.01% by weight of a gray pigment, 10% by weight of the coarsely pulverized particles, 1% by weight of silica ultrafine powder (refractive index 1.4 to 1.6, size of about 10 mm, manufactured by Nippon Aerosil Co., Ltd.), 10% by weight of an inorganic filler (calcium carbonate powder, average size: about 20 microns) was mixed and adjusted to a rocking degree of 2.0, and as shown in FIG. 1, a molding die (length 30 cm × width 60 cm ×)
The syrup mixture was cured and solidified by casting from a pouring port 2 to a depth of 2 cm) 1. Next, the molded product 4 was taken out from the molding die 1 to obtain an artificial marble. This artificial marble has 5 uniformly dispersed inorganic fillers, has a glossy surface, has a black pattern in a gray matrix resin, and has a granite tone with an excellent stone texture. It was artificial marble.
【００２０】（比較例１）：シリカ超微粉末を用いなか
った以外は図２に示すようにして実施例１と同様にして
成形し、成形物４’を成形用型１から取り出し、人工大
理石を得た。この人工大理石は無機充填材など５が重力
沈下するとともに抜き孔３の近傍に集まって不均一に分
散しており、灰色のマトリックス樹脂の中にむらのある
黒色の模様を有している人工大理石であった。(Comparative Example 1): Molded in the same manner as in Example 1 as shown in FIG. 2 except that no ultrafine silica powder was used. Got This artificial marble is such that inorganic fillers 5 settle in gravity and gathered in the vicinity of the holes 3 and dispersed non-uniformly, and the artificial marble has an uneven black pattern in a gray matrix resin. Met.
【００２１】[0021]
【発明の効果】不飽和ポリエステル樹脂やメチルメタク
リレートなどのマトリックス樹脂中にガラスフリットや
水酸化アルミニウム等の無機質微紛末充填材、天然石砕
石、着色樹脂粒子、着色雲母などを配合した樹脂組成物
に超微細のシリカなどの揺変性付与剤を一定量配合し
て、揺変度を所定の範囲に制御して成形すると、樹脂組
成物が硬化するまでの時間中、比重の大きいものの重力
沈下が防止できるので、これらをマトリックス樹脂中に
均一に分散させた人工石を容易に得ることができる。揺
変性付与剤を混合しない樹脂組成物を型内に注入する場
合、無機充填材などとマトリックス樹脂との流動抵抗の
違いにより、注入口付近は無機充填材などの濃度が小さ
く、抜き孔近傍ではこれらの濃度が大きくなり製品に色
むらができる問題があるが、揺変性付与剤を混合するこ
とによりこれらをマトリックス樹脂中に均一に分散させ
た人工石を容易に得ることができる。EFFECT OF THE INVENTION A resin composition in which a matrix resin such as unsaturated polyester resin or methyl methacrylate is mixed with inorganic fine powder filler such as glass frit or aluminum hydroxide, natural stone crushed stone, colored resin particles, colored mica, etc. By mixing a certain amount of thixotropic agent such as ultrafine silica and controlling the thixotropy within a predetermined range, molding will prevent gravity sinking even though the specific gravity is high during the time until the resin composition cures. Therefore, it is possible to easily obtain an artificial stone in which these are uniformly dispersed in the matrix resin. When injecting a resin composition containing no thixotropic agent into the mold, the concentration of the inorganic filler or the like is small near the injection port due to the difference in the flow resistance between the inorganic filler and the matrix resin. Although there is a problem that the concentration of these becomes large and the product becomes uneven in color, by mixing a thixotropic agent, an artificial stone in which these are uniformly dispersed in a matrix resin can be easily obtained.
【図１】 本発明の人工石を製造する一方法を示す該略
図。FIG. 1 is a schematic view showing one method of producing the artificial stone of the present invention.
【図２】 比較例の人工石を製造する方法を示す該略
図。FIG. 2 is a schematic view showing a method for producing a comparative artificial stone.
１ 成形用型 ２ 注入口 ３ 抜き孔 ４、４’ 成形物 ５ 無機充填材など 1 molding die 2 injection port 3 punched hole 4, 4'molded product 5 inorganic filler, etc.
Claims (3)
又は天然石と無機充填材などからなる人工石において、
揺変性付与剤を配合したことを特徴とする人工石。1. A matrix resin and colored resin particles and / or
Or in an artificial stone consisting of natural stone and inorganic filler,
An artificial stone containing a thixotropic agent.
揺変性付与剤を０．１〜５．０重量部配合したことを特
徴とする請求項１記載の人工石。2. The artificial stone according to claim 1, wherein 0.1 to 5.0 parts by weight of the thixotropic agent is mixed with 100 parts by weight of the matrix resin.
又は天然石と無機充填材などからなる成形用材料に揺変
性付与剤を配合し、揺変度を１．２〜４．０に調整した
後、成形することを特徴とする請求項１記載の人工石の
製造方法。3. Matrix resin and colored resin particles and / or
Alternatively, the thixotropic agent is added to a molding material composed of natural stone and an inorganic filler, the thixotropic degree is adjusted to 1.2 to 4.0, and then the molding is performed. Stone manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25019494A JP2922121B2 (en) | 1994-09-20 | 1994-09-20 | Artificial stone and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25019494A JP2922121B2 (en) | 1994-09-20 | 1994-09-20 | Artificial stone and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0891902A true JPH0891902A (en) | 1996-04-09 |
| JP2922121B2 JP2922121B2 (en) | 1999-07-19 |
Family
ID=17204221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25019494A Expired - Fee Related JP2922121B2 (en) | 1994-09-20 | 1994-09-20 | Artificial stone and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2922121B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6517897B1 (en) * | 2000-11-14 | 2003-02-11 | Korstone L.L.C. | Methods and materials for the manufacture of a solid surface article |
| JP2005186062A (en) * | 2003-12-05 | 2005-07-14 | Sk Kaken Co Ltd | Method for coating outer wall of building |
| JP2008207403A (en) * | 2007-02-23 | 2008-09-11 | Matsushita Electric Works Ltd | Manufacturing method of thermosetting resin molding |
| JP2010264454A (en) * | 2003-12-05 | 2010-11-25 | Sk Kaken Co Ltd | Method of coating external wall of building |
| KR101283868B1 (en) * | 2008-03-13 | 2013-07-08 | (주)엘지하우시스 | Interior panel comprising pattern parts and process for preparing the same |
-
1994
- 1994-09-20 JP JP25019494A patent/JP2922121B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6517897B1 (en) * | 2000-11-14 | 2003-02-11 | Korstone L.L.C. | Methods and materials for the manufacture of a solid surface article |
| JP2005186062A (en) * | 2003-12-05 | 2005-07-14 | Sk Kaken Co Ltd | Method for coating outer wall of building |
| JP2010264454A (en) * | 2003-12-05 | 2010-11-25 | Sk Kaken Co Ltd | Method of coating external wall of building |
| JP2008207403A (en) * | 2007-02-23 | 2008-09-11 | Matsushita Electric Works Ltd | Manufacturing method of thermosetting resin molding |
| KR101283868B1 (en) * | 2008-03-13 | 2013-07-08 | (주)엘지하우시스 | Interior panel comprising pattern parts and process for preparing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2922121B2 (en) | 1999-07-19 |
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