JPS6254769A - Curable wear-resistant composition - Google Patents

Abstract

PURPOSE:To obtain a curable compsn. which gives a coating agent having high wear resistance, by incorporating leaf-from ceramic pieces in a binder for coating agent. CONSTITUTION:A curable compsn. comprises a wear-resistant coating agent obtd. by incorporating leaf-form ceramics pieces in a binder for said agent. Said binder may be an org. binder. However, when heat resistance is required, an inorg. binder is preferred. Since said coating agent contains the binder contg. leaf-form ceramics pieces, it can be applied with a trowel or a spatula as in conventional coating agent, and the ceramic pieces are applied one upon another nearly in parallel on the surface of a material to be coated. Thus, the space between the ceramics pieces is so small that there is left no part where no ceramic piece is interposed between the surface of the coated layer and the surface of the material to be coated. As the org. binder, epoxy resins are preferred from the viewpoints of wear resistance, workability, toughness, flexibility and cost. As the inorg. binder, silicate binders are preferred from the viewpoints of heat resistance, adhesion and workability.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は集塵機、スラリー輸送といった流体と接触し
て激しく摩耗される設備および装置の摩耗を受ける面に
耐摩耗性コーティング層を形成する硬化性組成物に関す
る。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a curable coating that forms a wear-resistant coating layer on the surfaces of equipment and equipment that are subject to severe wear due to contact with fluids, such as dust collectors and slurry transport. Regarding the composition.

〔従来の技術とその問題点〕[Conventional technology and its problems]

従来流体によって激しく摩耗をうける部分の摩耗防止方
法としてはゴムライニング、ウレタンコーティング、セ
メントコーティング、岩石ライナーの貼り付けおよび耐
摩耗性鋳鉄などの各種方法があった。しかしこれらのも
のの摩耗性は充分とはいえず割合早い時期での補修が必
要とされ、さらに非常に摩耗の激しい箇所にはほとんど
使用できないという欠点があった。しかし最近摩耗性に
優れたセラミックスがこの分野に用いられ、セラミック
ス小片を接着剤で貼り付ける方法が提案されているが、
この方法はセラミックス小片をいちいち貼り付ける必要
があり、大変手間がかかる。Conventionally, various methods have been used to prevent wear of parts that are subject to severe wear due to fluids, such as rubber lining, urethane coating, cement coating, attaching rock liners, and wear-resistant cast iron. However, the abrasion resistance of these materials is not sufficient and they require repair at a relatively early stage, and furthermore, they have the disadvantage that they can hardly be used in areas that are subject to extremely high wear. However, recently ceramics with excellent abrasion resistance have been used in this field, and a method of attaching small pieces of ceramics with adhesive has been proposed.
This method requires attaching small ceramic pieces one by one, which is very time-consuming.

またさらに球状若しくは粒状のセラミックスを接着剤で
固めてセラミックス層を形成する方法が特開昭５９−２
１２２４３号に記載されているが、この方法は円筒状で
あるパイプの内壁の耐摩耗に限られ、さらにセラミック
スポールとセラミックスポールの間に接着剤だけの部分
が有りこの部分から摩耗を受けやすい。Furthermore, a method of forming a ceramic layer by hardening spherical or granular ceramics with an adhesive was disclosed in JP-A-59-2.
Although this method is described in No. 12243, it is limited to the wear resistance of the inner wall of the cylindrical pipe, and furthermore, there is a part only made of adhesive between the ceramic poles, and this part is susceptible to wear.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は上述のような問題を解決し耐摩耗性の高いコー
ティング剤となる硬化組成物を提供することを目的とす
る。An object of the present invention is to provide a cured composition that solves the above-mentioned problems and serves as a coating agent with high wear resistance.

すなわち結合剤中に薄板状セラミックス小片を含有させ
たものである。That is, it contains thin ceramic pieces in a binder.

なお、結合剤が有機系結合剤でも良いし、さらに耐熱性
が必要な場合には無機系結合剤の使用が好ま°しい。Incidentally, the binder may be an organic binder, and if further heat resistance is required, it is preferable to use an inorganic binder.

〔作　用〕[For production]

有機系もしくは無機系の結合剤中に薄板状のセラミック
ス小片を含有させであるので、普通のコーティング剤と
同様にコテあるいはヘラで塗ることが出来、含有してい
るセラミックス小片が偏平な形状であるので、コテある
いはヘラでの塗布作業により、セラミックス小片は被着
体表面にほぼ平行状態に重なり合って塗布される。この
結果セラミックス小片間の空間が非常に小さくなり、被
着体表面と塗布層表面との間にセラミックス小片が介在
しない部分は無くなってしまう。Since thin ceramic pieces are contained in an organic or inorganic binder, it can be applied with a trowel or spatula in the same way as ordinary coating agents, and the ceramic pieces contained are flat in shape. Therefore, by applying with a trowel or a spatula, the ceramic pieces are applied to the surface of the adherend in a substantially parallel manner and overlapping each other. As a result, the space between the ceramic pieces becomes very small, and there is no part where the ceramic pieces are not interposed between the surface of the adherend and the surface of the coating layer.

さらに前記無機系の結合剤を使用することにより、特に
耐熱性を要求される箇所への使用も可能となる。Furthermore, by using the above-mentioned inorganic binder, it can be used in areas where heat resistance is particularly required.

〔実施例〕〔Example〕

第１図は被着体表面に塗布後硬化させたコーティング層
の断面図で、１はセラミックス小片、２は結合剤、３は
被着体である。FIG. 1 is a cross-sectional view of a coating layer that has been cured after being applied to the surface of an adherend, in which 1 is a small ceramic piece, 2 is a binder, and 3 is an adherend.

第２図は第１図示のコーティング層の表面に粉体を吹き
付け（サンドブラスト処理）して摩耗させた後の断面図
で、表面の結合剤層のみが摩耗された状態である。FIG. 2 is a cross-sectional view after the surface of the coating layer shown in FIG. 1 has been abraded by spraying powder (sandblasting), with only the binder layer on the surface being abraded.

爽施皿土 結合剤として有機系結合剤を使用した例である。Sōse clay This is an example in which an organic binder is used as the binder.

有機系結合剤としてはエポキシ樹脂、アクリル樹脂、フ
ェノール樹脂、アルキッド樹脂、メラミン櫂脂、シリコ
ーン樹脂、ウレタン樹脂、ポリブタジェン樹脂、ポリエ
ステル樹脂、その他はじめ液状であり、それがなんらか
の方法で硬化して樹脂状あるいはゴム状になる全ての樹
脂が考えられる。これらの中でとくに耐摩耗性２作業性
９強靭性、可撓性、コスト面からしてエポキシ樹脂が好
ましい。Examples of organic binders include epoxy resins, acrylic resins, phenolic resins, alkyd resins, melamine resins, silicone resins, urethane resins, polybutadiene resins, polyester resins, and others, which are in liquid form and then hardened by some method to form resin. Alternatively, all resins that become rubbery can be considered. Among these, epoxy resin is particularly preferred from the viewpoints of wear resistance, workability, toughness, flexibility, and cost.

また薄板状のセラミックス小片としては耐摩耗性に優れ
た各種ニューセラミックスが考えられるが、例えばＡｌ
ｌ　ｚＯｘ＋　Ｓｉ、ＩＮ＊＋　ＴＩＣ＋　ａ４．ｃ、
　ＷＣ＋　ＴｌＮｌＳｉＣなどがある。とくにコスト面
、軽量さからしてＡ　ｆ　、０３焼結体が好ましい。次
にセラミックス小片の形状はできるだけ薄く偏平なもの
が好ましい。厚みは０．０３〜２．０鶴の範囲が好まし
く　、０．０３鶴より薄いと、耐摩耗性効果があまり発
揮されずしかも成形がむずかしくなる。また逆に２．０
鶴より厚くなると結合剤への混合が困難になり、さらに
被着体へ塗布するときコテあるいはヘラにひっかかり塗
りにくくなる。さらに好ましくは０．１〜０．５　ｔｍ
の範囲が好ましい。次に面積は０．０１〜６ｃｄの範囲
が好ましく　、Ｏ，０１ａａ以下であるとコテあるいは
ヘラで塗布したとき被着体と平行にならびにくく、また
流体があたったとき接着面積が小さいためはぎとられや
すい。６−より大きいと結合剤への混合が困難になる。In addition, various new ceramics with excellent wear resistance can be considered as thin ceramic pieces, but for example, Al
l zOx+ Si, IN*+ TIC+ a4. c,
Examples include WC+ TlNlSiC. In particular, the A f 03 sintered body is preferred from the viewpoint of cost and light weight. Next, the shape of the ceramic pieces is preferably as thin and flat as possible. The thickness is preferably in the range of 0.03 to 2.0 mm, and if it is thinner than 0.03 mm, the abrasion resistance effect will not be exhibited so much and molding will be difficult. On the other hand, 2.0
If it is thicker than Tsuru, it will be difficult to mix it into the binder, and it will also get caught on the trowel or spatula when applying it to the adherend, making it difficult to apply. More preferably 0.1 to 0.5 tm
A range of is preferred. Next, the area is preferably in the range of 0.01 to 6 cd, and if it is less than O. Cheap. If it is larger than 6-, it becomes difficult to mix it into the binder.

さらに好ましくは０．０６〜１ｄの範囲が好ましい。こ
のセラミックス小片は厚み１面積の各種火きさのものが
混合されても良く、形状も画一なものである必要はなく
不定形なもので良いし、材質も各種のものを混合して良
い。More preferably, the range is 0.06 to 1 d. These small ceramic pieces may be a mixture of ceramic pieces with a thickness of one area with various scorches, and the shape does not need to be uniform, but may be irregular, and the materials may be a mixture of various types. .

さらに本発明の組成物には必要に応じて各種硬化剤、硬
化促進剤を配合しても良いし、さらにアルミナ、シリカ
、ジルコニア、ジルコン、水酸化アルミニウム、炭酸カ
ルシウム、タルク、カーボンブランク、金属粉末といっ
た各種充填剤、その他溶剤やチクソトロピー剤や顔料等
を添加しても良い。Furthermore, the composition of the present invention may contain various curing agents and curing accelerators as necessary, and may further include alumina, silica, zirconia, zircon, aluminum hydroxide, calcium carbonate, talc, carbon blank, and metal powder. Various fillers such as, other solvents, thixotropic agents, pigments, etc. may be added.

上述のような素材の配合例として常温硬化型で可撓性を
有するエポキシ樹脂を１００重量部にポリアミド系硬化
剤５０重量部を加え、セラミックス小片として厚さ０．
５ｍ、面積０．２５ｃｄ　（５ｍ−角）の焼結アルミナ
セラミックス小片を１００重量部加えて均一に攪拌した
。As an example of the composition of the above-mentioned material, 50 parts by weight of a polyamide curing agent is added to 100 parts by weight of a flexible epoxy resin that hardens at room temperature, and ceramic pieces with a thickness of 0.
100 parts by weight of sintered alumina ceramic pieces measuring 5 m in area and 0.25 cd (5 m square) were added and stirred uniformly.

この組成物を厚さ０．６ｍ、大きさ１５０Ｘ７５ｗのＪ
ＩＳ　Ｇ　３１４１の冷間圧延鋼板にゴムベラで約２削
の厚さに引きのばして塗布し、常温で２４時間放置して
硬化させた。This composition was added to a J with a thickness of 0.6 m and a size of 150 x 75 w.
It was applied to a cold-rolled steel plate of IS G 3141 by stretching it to a thickness of about 2 cuts with a rubber spatula, and was left at room temperature for 24 hours to harden.

大嵐斑ｌ 結合剤として無機系結合剤を使用した例であるゆ無機系
結合剤としては、はじめ液状でなんらかの方法で硬化す
るものであれば全て使用できるが、たとえばセメント類
、シリケート類、ホスフェート系結合剤が考えられる。This is an example of using an inorganic binder as a binder.Any inorganic binder that is initially liquid and hardens by some method can be used, but examples include cement, silicates, and phosphates. Binders are possible.

とくに耐熱性、接着性。Especially heat resistance and adhesive properties.

作業性からシリケート系結合剤が好ましい。A silicate binder is preferred from the viewpoint of workability.

また薄板状のセラミックス小片は前記実施例１の場合と
同じであるので、説明は省略する。Furthermore, since the thin ceramic pieces are the same as those in Example 1, their explanation will be omitted.

上述のような素材の配合例として無機結合剤１００重量
部に前記実施例１の場合と同様なセラミックス小片１０
０重量部を加えて均一に攪拌した後、実施例１と同様に
鋼板上に塗布し、常温で７２時間放置した後１５０℃で
１時間加熱硬化させた。As an example of blending the above-mentioned materials, 10 parts by weight of the inorganic binder and 10 pieces of the same ceramic pieces as in Example 1 are added.
After adding 0 parts by weight and stirring uniformly, it was applied onto a steel plate in the same manner as in Example 1, left to stand at room temperature for 72 hours, and then heated and hardened at 150° C. for 1 hour.

去止血主 本実施例は前記実施例１と同様であるが、セラミックス
小片のみを次の様に変更した。Main hemostasis Example This example was the same as Example 1, except that only the ceramic pieces were changed as follows.

すなわち厚さ０．３ｍｍの焼結セラミックス板を破砕機
で破砕し、１龍目のふるいで面積が０　、０１　ｃｊ以
下のものを取り除き、逆に６−以上のものは目視選別で
取り除いた。このようにして不定形で不均一な大きさの
アルミナセラミックス小片を使用したもので、他は前記
実施例１と全く同様にして施工した。That is, a sintered ceramic plate with a thickness of 0.3 mm was crushed using a crusher, and those with an area of 0.01 cj or less were removed using a first sieve, and those with an area of 6 or more were removed by visual sorting. In this way, small pieces of alumina ceramics of irregular shape and non-uniform size were used, and the construction was otherwise carried out in exactly the same manner as in Example 1.

なお比較のために比較例１は前記実施例１のセラミック
ス小片の代わりに直径３關のセラミックスポールを使用
したものであり、比較例２は前記実施例２のセラミック
ス小片の代わりに直径３龍のセラミックスポールを使用
したものである。For comparison, Comparative Example 1 uses ceramic poles with a diameter of 3 mm instead of the ceramic pieces of Example 1, and Comparative Example 2 uses ceramic poles with a diameter of 3 mm instead of the ceramic pieces of Example 2. It uses ceramic poles.

〔発明の効果〕〔Effect of the invention〕

前記３つの実施例及び２つの比較例のコーティング層の
表面にエアー圧８　ｋｇ　／　ｃ＋Ｊでサンドブラスト
を１０分間かけた結果は第１表の通りである。Table 1 shows the results of sandblasting the surfaces of the coating layers of the three examples and two comparative examples at an air pressure of 8 kg/c+J for 10 minutes.

第１表 すなわち最初のセラミックス小片の所で摩耗を食い止め
得るので、被着体表面が露出することがない。Since wear can be stopped at the first ceramic piece, that is, at the first ceramic piece, the surface of the adherend is not exposed.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は被着体表面に塗布硬化後のコーティング層の断
面図、第２図はコーティング層の表面をサンドブラスト
処理した後のコーティング層の断面図である。 ｌ・・・・・・セラミックス小片、２・・・・・・結合
剤、３・・・・・・被着体。FIG. 1 is a cross-sectional view of the coating layer after it has been applied and cured on the surface of an adherend, and FIG. 2 is a cross-sectional view of the coating layer after the surface of the coating layer has been sandblasted. 1...Small ceramic piece, 2...Binding agent, 3...Adherent.

Claims (3)

【特許請求の範囲】[Claims] （１）耐摩耗用コーティング剤において、結合剤中に薄
板状セラミックス小片を含有してなる耐摩耗性硬化組成
物。(1) A wear-resistant hardened composition comprising thin ceramic pieces in a binder in a wear-resistant coating agent. （２）前記結合剤が有機系結合剤である特許請求の範囲
第１項記載の耐摩耗性硬化組成物。(2) The wear-resistant cured composition according to claim 1, wherein the binder is an organic binder. （３）前記結合剤が無機系結合剤である特許請求の範囲
第１項記載の耐摩耗性硬化組成物。(3) The wear-resistant cured composition according to claim 1, wherein the binder is an inorganic binder.