JP2012512048A - 傾斜側壁を備える成形研磨粒子 - Google Patents
傾斜側壁を備える成形研磨粒子 Download PDFInfo
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- JP2012512048A JP2012512048A JP2011542207A JP2011542207A JP2012512048A JP 2012512048 A JP2012512048 A JP 2012512048A JP 2011542207 A JP2011542207 A JP 2011542207A JP 2011542207 A JP2011542207 A JP 2011542207A JP 2012512048 A JP2012512048 A JP 2012512048A
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- abrasive
- abrasive particles
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- draft angle
- shaped abrasive
- Prior art date
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/001—Manufacture of flexible abrasive materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24364—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] with transparent or protective coating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
- Y10T428/257—Iron oxide or aluminum oxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
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Abstract
【選択図】図2
Description
本明細書で使用するとき、「含む」、「有する」、及び「包含する」という単語の形態は、法律的に同意義でありかつ制約されない。それゆえ、列挙されている要素、機能、工程、又は制限に加えて、列挙されていない付加的な要素、機能、工程又は制限が存在し得る。
図1A、図1B、及び図1Cを参照すると、傾斜側壁22を備える例示的な成形研磨粒子20が示される。傾斜側壁22を備える成形研磨粒子20を作製する材料は、αアルミナを含む。αアルミナ粒子は、酸化アルミニウム一水和物の分散液から作製することができ、この分散液は、本明細書で後述するように、ゲル化され、型によって成形され、その形状を保持するように乾燥され、焼成され、次いで焼成される。成形研磨粒子の形状は、粒塊を形成する結合剤(この粒塊は、結合剤中に研磨粒子を含み、次いで研磨粒子は、一定の成形構造体に形成される)を必要とすることなく、保持される。
図1C、図4C、及び図5Cを参照すると、コーティングされた研磨物品40は、第1の結合剤の層を有する裏材42を含み、この第1の層は、以降はメイクコート44と称され、裏材42の第1主表面41を覆って適用される。傾斜側壁22を備える複数個の成形研磨粒子20が、メイクコート44に付着するか、又は部分的に埋め込まれて、研磨材層を形成する。傾斜側壁22を備える成形研磨粒子20を、以降はサイズコート46と称される、第2の結合剤の層が覆って存在する。メイクコート44の目的は、傾斜側壁22を備える成形研磨粒子20を、裏材42に固定することであり、サイズコート46の目的は、傾斜側壁22を備える成形研磨粒子20を補強することである。傾斜側壁22を備える成形研磨粒子20の大部分は、先端部48すなわち頂点が、裏材42から離れる方向に向き、成形研磨粒子が、傾斜側壁22で安置され、図示のように倒れ込むか又は傾くように、配向される。
第1のプロセス工程は、αアルミナに転換可能な、シード添加された研磨材分散液、又はシード添加されていない研磨材分散液のいずれかの提供を伴う。このαアルミナ前駆体組成物は、揮発性成分である液体を含む場合が多い。一実施形態では、揮発性成分は水である。研磨材分散液は、成形用空洞を充填して成形型表面を複製することが可能になるよう、研磨材分散液の粘度を十分に低くするために、十分な量の液体を含むべきであるが、その後の、成形用空洞からの液体の除去を、極端に費用がかかるものにするほど多量の液体を含むべきではない。一実施形態では、研磨材分散液は、2重量%〜90重量%の、酸化アルミニウム一水和物(ベーマイト)の粒子などの、αアルミナに転換可能な粒子を含み、少なくとも10重量%、又は50重量%〜70重量%、若しくは50重量%〜60重量%の、水などの揮発性成分を含む。一方で、一部の実施形態における研磨材分散液は、30重量%〜50重量%、又は40重量%〜50重量%の固体を含有する。
ベーマイトゾル−ゲルのサンプルを、以下の処方を使用して作製した:商標名「DISPERAL」を有する酸化アルミニウム一水和物粉末(1600部)を、水(2400部)及び70%硝酸水溶液(72部)を含有する溶液と、11分間、高剪断混合することにより分散させた。得られたゾル−ゲルを、コーティングの前に少なくとも1時間、エージングした。このゾル−ゲルを、深さ28ミル(0.71mm)及び各側辺に付き110ミル(2.79mm)の三角形形状の成形用空洞を有する、生産用具内に押し入れた。成形型の側壁と底部との間の抜き勾配角αは、各生産用具に関して異なるものとした。抜き勾配角αは、第1用具に関しては90度、第2用具に関しては98度、第3用具に関しては120度、及び最後の用具に関しては135度とした。抜き勾配角98度の生産用具は、成形用空洞の50%が、三角形の一側辺と90度の角度で交差する、空洞の底面から盛り上がる8つの平行な隆起部を備えるように製造され、残りの空洞は、平滑な底部成形面を有していた。上述の代理人整理番号64792US002の特許出願に記載されるように、平行な隆起部は、0.277mm毎に間隔が置かれ、隆起部の断面は、高さ0.0127mm、及び先端部での各隆起部の側辺間の角度45度を有する、三角形であった。ゾル−ゲルを、生産用具の開口部が完全に充填されるように、パテナイフを用いて空洞内に押し入れた。メタノール中1%のピーナッツオイルの離型剤を使用して生産用具をコーティングし、約0.5mg/in2(0.078mg/cm2)のピーナッツオイルを生産用具に適用した。生産用具のシートを、空気対流式オーブン内に45℃で5分間置くことにより、余剰のメタノールを除去した。ゾル−ゲルコーティングされた生産用具を、空気対流式オーブン内に45℃で少なくとも45分間置き、乾燥させた。超音波ホーン上を通過させることにより、前駆成形研磨粒子を生産用具から取り出した。この前駆成形研磨粒子を、約650℃で焼成し、次いで以下の濃度の硝酸混合溶液(酸化物として報告された)を含浸させた:それぞれ1.8%の、MgO、Y2O3、Nd2O3、及びLa2O3。余剰の硝酸溶液を除去し、開口部を有する飽和前駆成形研磨粒子を乾燥させ、その後、この粒子を再び650℃で焼成し、約1400℃で焼結させた。焼成及び焼結は双方とも、回転式管状釜を使用して実行した。
Claims (21)
- 傾斜側壁をそれぞれ有する成形研磨粒子を含み、前記成形研磨粒子のそれぞれが、αアルミナを含み、厚さtによって隔てられる第1面及び第2面を有し、
前記成形研磨粒子が、
前記第2面と前記傾斜側壁との間の、約95度〜約130度の抜き勾配角α、又は
前記第1面と前記第2面との間の、前記厚さtの約0.5〜約2倍の半径Rを有する前記傾斜側壁、のいずれかを更に含む、研磨粒子。 - 前記第1面及び前記第2面の外辺部が、実質的に三角形の形状を含む、請求項1に記載の研磨粒子。
- 前記抜き勾配角αが、約95度〜約120度である、請求項2に記載の研磨粒子。
- 前記抜き勾配角αが、約95度〜約110度である、請求項2に記載の研磨粒子。
- 前記実質的に三角形の形状が、正三角形を含む、請求項3又は4に記載の研磨粒子。
- 第1抜き勾配角を有する第1傾斜側壁、第2抜き勾配角を有する第2傾斜側壁、及び第3抜き勾配角を有する第3傾斜側壁を含み、前記第1抜き勾配角、前記第2抜き勾配角、及び前記第3抜き勾配角が等しい、請求項5に記載の研磨粒子。
- 第1抜き勾配角を有する第1傾斜側壁、及び第2抜き勾配角を有する第2傾斜側壁を含み、前記第1抜き勾配角が、前記第2抜き勾配角とは異なる値である、請求項1に記載の研磨粒子。
- 第1抜き勾配角を有する第1傾斜側壁、第2抜き勾配角を有する第2傾斜側壁、及び第3抜き勾配角を有する第3傾斜側壁を含み、前記第1抜き勾配角、及び前記第2抜き勾配角、及び前記第3抜き勾配角が、互いに異なる値である、請求項1に記載の研磨粒子。
- 前記第1面及び前記第2面の外辺部が、実質的に三角形の形状を含む、請求項7又は8に記載の研磨粒子。
- 前記実質的に三角形の形状が、正三角形を含む、請求項9に記載の研磨粒子。
- 体積測定アスペクト比を含み、前記体積測定アスペクト比が、約1.15を超える、請求項1に記載の研磨粒子。
- 平均先端半径を含み、前記平均先端半径が、75マイクロメートル未満である、請求項2に記載の研磨粒子。
- 均一な平面状の傾斜側壁を含む、請求項2又は12に記載の研磨粒子。
- 前記抜き勾配角αが、約95度〜約100度である、請求項13に記載の研磨粒子。
- 結合研磨物品、コーティングされた研磨物品、不織布研磨物品、及び研磨ブラシからなる群から選択される研磨物品を形成する結合剤を含む、請求項1に記載の研磨粒子。
- 請求項1に記載の研磨粒子、及び裏材の第1主表面上のメイクコートを含み、前記成形研磨粒子の大部分が、前記傾斜側壁によって前記メイクコートに接着して、約50度〜約85度の配向角βを有し、前記成形研磨粒子が研磨材層を形成し、前記研磨材層がサイズコートでコーティングされ、前記研磨材層は、少なくとも5重量%の前記成形研磨粒子を含む、コーティングされた研磨物品。
- 前記研磨材層が、オープンコートの研磨材層であり、前記研磨材層中の空き領域パーセントが、約10%〜約90%である、請求項16に記載のコーティングされた研磨物品。
- 前記配向角βが、約60度〜約85度である、請求項17に記載のコーティングされた研磨物品。
- 前記配向角βが、約70度〜約85度である、請求項17に記載のコーティングされた研磨物品。
- 前記研磨材層が、少なくとも50重量%の前記成形研磨粒子を含む、請求項19に記載のコーティングされた研磨物品。
- 複数個の空洞を有する成形型の提供する工程であって、前記複数個の空洞が高分子表面を含む、工程と、
前記複数個の空洞をゾル−ゲルで充填する工程であって、前記ゾル−ゲルが、αアルミナに転換可能な粒子を液体中に含み、前記液体が揮発性成分を含む、工程と、
前記揮発性成分の少なくとも一部分を、前記ゾル−ゲルから除去する一方で、前記ゾル−ゲルが、前記複数個の空洞内に残留することによる、傾斜側壁をそれぞれ有する複数個の前駆成形研磨粒子を形成する工程と、を含む、請求項1に記載の研磨粒子の作製方法。
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Also Published As
Publication number | Publication date |
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EP2373747A4 (en) | 2014-10-15 |
CN102300939A (zh) | 2011-12-28 |
EP3666832A1 (en) | 2020-06-17 |
KR20110099736A (ko) | 2011-09-08 |
BRPI0922599A2 (pt) | 2018-06-05 |
JP5458109B2 (ja) | 2014-04-02 |
RU2011123662A (ru) | 2013-01-27 |
WO2010077519A2 (en) | 2010-07-08 |
CN102300939B (zh) | 2014-03-12 |
CA2747203C (en) | 2018-03-13 |
US20100151196A1 (en) | 2010-06-17 |
ES2784187T3 (es) | 2020-09-23 |
US8142531B2 (en) | 2012-03-27 |
PL2373747T3 (pl) | 2020-07-13 |
US20120137597A1 (en) | 2012-06-07 |
US10987780B2 (en) | 2021-04-27 |
CA2747203A1 (en) | 2010-07-08 |
EP2373747B1 (en) | 2020-01-22 |
BRPI0922599B1 (pt) | 2019-05-14 |
KR101681341B1 (ko) | 2016-11-30 |
WO2010077519A3 (en) | 2010-10-28 |
EP2373747A2 (en) | 2011-10-12 |
RU2522355C2 (ru) | 2014-07-10 |
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