JPH05180B2 - - Google Patents
Info
- Publication number
- JPH05180B2 JPH05180B2 JP62025087A JP2508787A JPH05180B2 JP H05180 B2 JPH05180 B2 JP H05180B2 JP 62025087 A JP62025087 A JP 62025087A JP 2508787 A JP2508787 A JP 2508787A JP H05180 B2 JPH05180 B2 JP H05180B2
- Authority
- JP
- Japan
- Prior art keywords
- polishing
- weight
- abrasive
- mixture
- abrasive material
- 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.)
- Expired - Lifetime
Links
- 239000003082 abrasive agent Substances 0.000 claims description 16
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 13
- 150000002822 niobium compounds Chemical class 0.000 claims description 9
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 9
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 9
- 239000000110 cooling liquid Substances 0.000 claims description 8
- HFLAMWCKUFHSAZ-UHFFFAOYSA-N niobium dioxide Inorganic materials O=[Nb]=O HFLAMWCKUFHSAZ-UHFFFAOYSA-N 0.000 claims description 8
- BFRGSJVXBIWTCF-UHFFFAOYSA-N niobium monoxide Inorganic materials [Nb]=O BFRGSJVXBIWTCF-UHFFFAOYSA-N 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 5
- 238000005498 polishing Methods 0.000 description 25
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 20
- 238000002156 mixing Methods 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 8
- 239000000843 powder Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- SYFOAKAXGNMQAX-UHFFFAOYSA-N bis(prop-2-enyl) carbonate;2-(2-hydroxyethoxy)ethanol Chemical compound OCCOCCO.C=CCOC(=O)OCC=C SYFOAKAXGNMQAX-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910003327 LiNbO3 Inorganic materials 0.000 description 1
- 229910019753 Nb3Si Inorganic materials 0.000 description 1
- 229910000750 Niobium-germanium Inorganic materials 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000002497 iodine compounds Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000113 methacrylic resin Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000657 niobium-tin Inorganic materials 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
［産業上の利用分野］
この発明は、例えば合成樹脂の鏡面研磨用に適
した研磨材に関するものである。
［従来の技術］
従来、合成樹脂例えば、
(1) CR−39 ジエチレングリコールビスアリル
カーボネート
(2) PMMA ポリメタクリツク レンジメタク
リル樹脂
(3) ポリカーボネート樹脂
(4) ポリスチレン樹脂
(5) ポリアダマンチル メタクリル樹脂
等の鏡面研磨材として、酸化アルミニウムAl2O3
をPH３〜3.5の特殊組成液に混合した不二見研磨
材工業株式会社製に商品名ポリプラが一般に使用
されているが、他にこのポリプラを凌駕するもの
がなく、業界としては研磨時間、仕上面精度のよ
り優れたものの開発が望まれていた。
また最近、硝子レンズに代わつてプラスチツク
レンズの需要が増大してきているが、レンズの研
磨には時に面精度の精密化が要求される。
しかし、従来の研磨材によるプラスチツクレン
ズの研磨では、100Å程度の面精度しか得られな
い上、レンズの中心部の研磨が難しく、傷を発生
し易く、しかも曇つた状態になるような問題があ
つた。
［発明が解決しようとする課題］
この発明は、上記したような問題を解決するた
めになされたもので、中心部の傷発生を防ぎ、か
つ、面精度、面荒さがともに50Å程度に確保で
き、しかも研磨時間を短縮できる研磨材を提供す
ることを目的としている。
［課題を解決するための手段］
この発明の研磨剤は、粉末状の酸化ジルコニウ
ムに、この酸化ジルコニウムの重量に対して0.5
〜15重量％のニオブ化合物、NbO、NbO2または
Nb2O5のいずれか一種もしくはこれらの混合物
を粉末状にして混合し活性剤のような冷却用液体
に懸濁させたことを特徴としている。
［作用］
このように研磨材を構成すると、上記ニオブ化
合物が、界面活性剤のような冷却液体を介して、
酸化ジルコニウムに良く混合し、さらに、冷却液
体は研磨材と被研磨物を冷やすことで研磨材の凝
集を防ぐ。また、混合されたニオブ化合物が酸化
ジルコニウムに大きな研磨力と被研磨物の表面を
溶かす作用を付与するので、研磨時間の短縮と仕
上面精度の向上が可能になる。
［実施例］
以下、この発明の一実施例を説明する。
実施例の研磨材は、研磨材の主材として、日本
ガイシ株式会社製のジルコニアと呼ばれている酸
化ジルコニウムの粉末を使用し、この主材に、
NbO、NbO2またはNb2O5のイオブ化合物のい
ずれか一種もしくは、これら混合物を粉末状にし
て、酸化ジルコニウムの重量に対して１〜10重量
％を混合し、さらに、これら混合粉末をPHを４〜
５に調整した溶媒と冷却用液体を兼ねる界面活性
剤に懸濁させて研磨液とした。
なお、使用した界面活性剤はカチオン界面活性
剤で、アミン塩型カチオン界面活性剤を水に３〜
５％溶解したものである。
この実施例の研磨材を用い、研磨機として不二
見機械工業(株)製のロータリー研磨機を使用して、
各種合成樹脂についての研磨実験を行つた。
この実施例の研磨結果と比較するため、従来の
研磨材による研磨実験も同じ研磨機を使用して同
時に行つた。
その結果、研削時間および製品歩留まりに関し
ては、前記ジルコニアのみを使用し、50φのBK7
の平面レンズを研磨するのに平均40分間を必要と
し、その研磨による製品歩留まりが87％前後であ
つたものが、この実施例のジルコニアにNbOの
粉末を混合した場合は、ジルコニアに対する重量
％で１％を混合したものは、同じ平面レンズを研
磨するのに36分程度で済み、数％以上10％の混合
率で31〜36程度に短縮することができた。
また、製品歩留まりについては、１重量％の混
合率で92％程度、数％以上10％の混合率で92〜97
％に改善された。
この実験で、混合率が３〜５％の場合に、研磨
時間も歩留まりも最も良好なデータが得られた。
この実験と同じジルコニアに、NbO2、Nb2O5
を混合した場合も同様な結果が得られた。
また、不二見研磨材工業(株)の製品であるポリプ
ラ（商品名）を使用し、CR−39の65φのメガネ
レンズを研磨するのに18〜20分を必要としたもの
が、このポリプラと比較して、単体では研磨能力
が劣ると考えられていたジルコニアに、Nb2O5
を混合したもので同じレンズを研磨した場合、１
〜２重量％の混合率で15分程度に、数％以上10％
の混合率で14分程度に短縮できることが分かつ
た。
この実験と同じジルコニアに、NbO.NbO2を
混合した場合も同様の結果が得られた。
さらに、ポリプラを使用し、三菱レイヨン(株)製
のアクリルライトを原料とした50φのPMMA成
型レンズを研磨した場合に平均18分を必要とする
ものが、ジルコニアに、Nb2O5を混合したもの
で同じレンズを研磨した場合、１〜２重量％の混
合率で16分程度になり、数％以上10％の混合率で
14分程度に短縮できることが分かつた。
この実験についても、同じジルコニアに、
NbO、NbO2を混合した場合も同様な結果が得ら
れた。
さらに、これら実施例は、NbO、NbO2、
Nb2O5のそれぞれの混合物でも実験したが同様
な結果が得られた。
上記した実施例の実験において、ニオブ化合物
のジルコニアに対する混合重量％を１〜10％の範
囲で研磨時間と歩留まりとの総合評価を行つた結
果、下表のような評価が得られた。
同表において、◎印は特に良好な場合、○印は
良好な場合を示している。
[Industrial Application Field] The present invention relates to an abrasive material suitable for, for example, mirror polishing of synthetic resin. [Prior art] Conventionally, synthetic resins such as (1) CR-39 diethylene glycol bisallyl carbonate (2) PMMA polymethacrylic resin (3) polycarbonate resin (4) polystyrene resin (5) polyadamantyl methacrylic resin, etc. Aluminum oxide Al 2 O 3 as a mirror polishing material
Polyplastic, a product made by Fujimi Abrasives Industry Co., Ltd., which is a mixture of a special liquid with a pH of 3 to 3.5, is commonly used, but there is no other product that surpasses this Polyplastic, and the industry has limited polishing time and finished surface. There was a desire to develop something with even greater accuracy. Recently, there has been an increasing demand for plastic lenses to replace glass lenses, but polishing of the lenses sometimes requires higher surface accuracy. However, when polishing plastic lenses with conventional abrasive materials, a surface accuracy of only about 100 Å can be obtained, and there are problems in that it is difficult to polish the center of the lens, which is prone to scratches, and leaves the lens in a cloudy state. Ta. [Problems to be Solved by the Invention] This invention was made to solve the above-mentioned problems, and it is possible to prevent the occurrence of scratches in the center and to ensure both surface accuracy and surface roughness of about 50 Å. Moreover, it is an object of the present invention to provide an abrasive material that can shorten the polishing time. [Means for Solving the Problems] The abrasive of the present invention contains powdered zirconium oxide with an amount of 0.5% based on the weight of the zirconium oxide.
~15% by weight of niobium compounds, NbO, NbO2 or
It is characterized in that any one type of Nb2O5 or a mixture thereof is mixed in powder form and suspended in a cooling liquid such as an activator. [Function] When the abrasive is configured in this way, the niobium compound is heated through a cooling liquid such as a surfactant,
The cooling liquid mixes well with zirconium oxide, and furthermore, the cooling liquid cools the abrasive and the object to be polished, thereby preventing agglomeration of the abrasive. Furthermore, the mixed niobium compound imparts to the zirconium oxide a large polishing force and an effect of melting the surface of the object to be polished, making it possible to shorten the polishing time and improve the finished surface accuracy. [Example] An example of the present invention will be described below. The abrasive material of the example uses zirconium oxide powder called zirconia manufactured by NGK Insulators Co., Ltd. as the main material of the abrasive material, and this main material contains:
Powder any one of the iodine compounds of NbO, NbO2 or Nb2O5, or a mixture thereof, and mix it in an amount of 1 to 10% by weight based on the weight of zirconium oxide.
A polishing liquid was prepared by suspending the polishing liquid in a solvent adjusted to No. 5 and a surfactant that also served as a cooling liquid. The surfactant used was a cationic surfactant.
5% dissolved. Using the abrasive material of this example, a rotary polisher manufactured by Fujimi Kikai Kogyo Co., Ltd. was used as the polisher.
Polishing experiments were conducted on various synthetic resins. In order to compare the polishing results of this example, a polishing experiment using a conventional abrasive material was also conducted at the same time using the same polishing machine. As a result, in terms of grinding time and product yield, only the zirconia mentioned above was used, and 50φ BK7
It took an average of 40 minutes to polish a flat lens, and the product yield from polishing was around 87%, but when NbO powder was mixed with the zirconia in this example, the percentage by weight of the zirconia was With a mixture of 1%, it took about 36 minutes to polish the same flat lens, and with a mixture ratio of a few percent or more to 10%, the time could be reduced to about 31 to 36 minutes. In addition, the product yield is approximately 92% at a mixing rate of 1% by weight, and 92-97% at a mixing rate of several percent or more and 10%.
improved to %. In this experiment, the best polishing time and yield data were obtained when the mixing ratio was 3 to 5%. In the same zirconia as in this experiment, NbO2, Nb2O5
Similar results were obtained when mixing. In addition, it took 18 to 20 minutes to polish CR-39 65φ eyeglass lenses using Polyplastic (trade name), a product of Fujimi Abrasives Industry Co., Ltd. In comparison, zirconia, which was thought to have poor polishing ability on its own, has Nb2O5.
If the same lens is polished with a mixture of
~15 minutes at a mixing rate of ~2% by weight, a few% or more 10%
It was found that the mixing rate could be reduced to about 14 minutes. Similar results were obtained when NbO.NbO2 was mixed with the same zirconia as in this experiment. Furthermore, it takes an average of 18 minutes to polish a 50φ PMMA molded lens made from Acrylic Light made by Mitsubishi Rayon Co., Ltd. using polyplastic, but it is the same when polishing a lens made of zirconia mixed with Nb2O5. When polishing a lens, it takes about 16 minutes at a mixing rate of 1 to 2% by weight, and it takes about 16 minutes at a mixing rate of a few percent or more to 10%.
It turned out that the time could be shortened to about 14 minutes. Regarding this experiment, the same zirconia,
Similar results were obtained when NbO and NbO2 were mixed. Furthermore, these examples include NbO, NbO2,
We also experimented with each mixture of Nb2O5 and obtained similar results. In the experiment of the above-mentioned example, a comprehensive evaluation of polishing time and yield was performed when the mixing weight percentage of the niobium compound to the zirconia was in the range of 1 to 10%, and the results were as shown in the table below. In the same table, ◎ marks indicate particularly good cases, and ○ marks indicate good cases.
【表】
なお、この実験において、混合比が0.5重量％
未満の場合は、混合した効果が充分には発揮され
ず、反対に上限の方は、混合した上記ニオブ化合
物により多少異なるが、全ての場合20％を越える
と、研削による面精度の低下が見られた、この結
果、各ニオブ化合物およびこれら化合物を混合物
を酸化アルミニウムに混合して効果が期待できる
のは15重量％までと考えられる。
現在、一般に多用されている不二見研磨材工業
(株)のポリプラは、研磨工程で研磨力が低下するの
で、１枚のレンズの研磨が終わると、その都度捨
てなければならなかつたが、この発明の研磨材は
一回調整すれば、少しずつ補充することで、研磨
力を維持させることが可能であり、面精度25Å程
度で研磨時間を15〜20％短縮できる。
この発明は、メガネレンズ、コンタクトレンズ
のほか、各種合成樹脂関係の研磨に充分な効果を
上げることができる。
なお、この発明は上記実施例に限定されるもの
ではなく、要旨を変更しない範囲で変形して実施
できる。
上記実施例では、遊離砥粒状の研磨材を説明し
たが、同じ成分構成のものを固着材で固形化する
ことで、砥石状のものも形成できる。
また、上記実施例においては、冷却用液体とし
て界面活性剤を用いたが、研磨剤の分散が良い状
態であれば、水（純水）を使用できる。
上記実施例は、酸化ジルコニウム粉末に、ニオ
ブ化合物のNbO、NbO2、Nb2O5のいずれか一
種もしくはこれらの混合物を粉末を混合した実施
例であるが、混合して効果あるニオブ化合物とし
ては、NbC、NbN、LiNbO3、Nb3Sn、Nb3Si、
Nb3Ge、Nb3Al等のニオブ化合物も、これら化
合物の性質から考えて同様の作用効果を期待でき
る。
［発明の効果］
この発明によれば、研磨力が強く、しかも製品
歩留まりのよい研磨材を提供するとができる。[Table] In this experiment, the mixing ratio was 0.5% by weight.
If it is less than 20%, the effect of the mixture will not be fully exhibited, and on the other hand, the upper limit will vary somewhat depending on the above-mentioned niobium compound mixed, but in all cases, if it exceeds 20%, a decrease in surface precision due to grinding will be observed. As a result, it is thought that the effect can be expected when each niobium compound or a mixture of these compounds is mixed with aluminum oxide up to 15% by weight. Fujimi Abrasives Industry, which is currently widely used
Polypla Co., Ltd.'s polishing power decreases during the polishing process, so it had to be thrown away after each lens was polished, but the polishing material of this invention can be adjusted once and By replenishing increments, it is possible to maintain the polishing power, and the polishing time can be shortened by 15 to 20% with a surface accuracy of about 25 Å. The present invention can be sufficiently effective in polishing various synthetic resins, as well as eyeglass lenses and contact lenses. It should be noted that the present invention is not limited to the above-mentioned embodiments, and can be implemented with modifications without changing the gist. In the above embodiment, an abrasive material in the form of free abrasive grains has been described, but a grindstone-like abrasive material can also be formed by solidifying the abrasive material having the same composition with a bonding material. Further, in the above embodiments, a surfactant was used as the cooling liquid, but water (pure water) can be used as long as the abrasive is well dispersed. The above example is an example in which powder of any one of niobium compounds NbO, NbO2, Nb2O5 or a mixture thereof is mixed with zirconium oxide powder. , LiNbO3, Nb3Sn, Nb3Si,
Niobium compounds such as Nb3Ge and Nb3Al can also be expected to have similar effects considering the properties of these compounds. [Effects of the Invention] According to the present invention, it is possible to provide an abrasive material with strong abrasive power and a high product yield.
Claims (1)
コニウムの重量に対して0.5〜15重量％のニオブ
化合物、NbO、NbO2、Nb2O5のいずれか一種
もしくはこれらの混合物を粉末状にして混合し冷
却用液体に懸濁させたことを特徴とする研磨材。 ２ 冷却液体としてPH４〜５に調整した界面活性
剤を用いたことを特徴とする特許請求の範囲第１
項記載の研磨材。[Claims] 1. Powdered zirconium oxide is mixed with 0.5 to 15% by weight of a niobium compound, NbO, NbO2, Nb2O5, or a mixture thereof, based on the weight of the zirconium oxide. An abrasive material characterized by being suspended in a cooling liquid. 2. Claim 1 characterized in that a surfactant adjusted to pH 4 to 5 is used as the cooling liquid.
Abrasive material as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62025087A JPS63196370A (en) | 1987-02-05 | 1987-02-05 | Abradant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62025087A JPS63196370A (en) | 1987-02-05 | 1987-02-05 | Abradant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63196370A JPS63196370A (en) | 1988-08-15 |
| JPH05180B2 true JPH05180B2 (en) | 1993-01-05 |
Family
ID=12156141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62025087A Granted JPS63196370A (en) | 1987-02-05 | 1987-02-05 | Abradant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63196370A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63166703A (en) * | 1986-04-26 | 1988-07-09 | Fuji Kagaku Kogyo Kk | Production of inorganic powder containing highly dispersed metal |
-
1987
- 1987-02-05 JP JP62025087A patent/JPS63196370A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63166703A (en) * | 1986-04-26 | 1988-07-09 | Fuji Kagaku Kogyo Kk | Production of inorganic powder containing highly dispersed metal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63196370A (en) | 1988-08-15 |
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