JPH0543243A - Method for regenerating scrap of zirconia compound after injection molding - Google Patents
Method for regenerating scrap of zirconia compound after injection moldingInfo
- Publication number
- JPH0543243A JPH0543243A JP3199536A JP19953691A JPH0543243A JP H0543243 A JPH0543243 A JP H0543243A JP 3199536 A JP3199536 A JP 3199536A JP 19953691 A JP19953691 A JP 19953691A JP H0543243 A JPH0543243 A JP H0543243A
- Authority
- JP
- Japan
- Prior art keywords
- zirconia
- compound
- injection molding
- zirconia powder
- powder
- 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.)
- Pending
Links
Landscapes
- Processing Of Solid Wastes (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Producing Shaped Articles From Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、射出成形後のジルコニ
アコンパウンド廃材再生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 a method for recycling waste zirconia compound after injection molding.
【０００２】[0002]
【従来の技術】射出成形後のジルコニアコンパウンド廃
材からジルコニア粉体を摘出し、ジルコニア粉体原料と
して再利用する技術は無い。2. Description of the Related Art There is no technique for extracting zirconia powder from a zirconia compound waste material after injection molding and reusing it as a zirconia powder raw material.
【０００３】[0003]
【発明が解決しようとする課題】ジルコニアコンパウン
ドを材料とする射出成形において、スプール、ランナー
あるいは成形不良品等は廃材として扱われ、廃棄されて
きた。ところが、成形品によっては廃材とされるこれら
の量が多く、材料コストも高くなるため、これらの廃材
を射出成形材料に再利用可能にするための技術が望まれ
ていた。In injection molding using a zirconia compound as a material, spools, runners, defective moldings, etc. have been treated as waste materials and discarded. However, depending on the molded product, the amount of these waste materials is large and the material cost is high. Therefore, a technique for reusing these waste materials as an injection molding material has been desired.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に、本発明においては射出成形後のジルコニアコンパウ
ンド廃材を加熱し、樹脂を蒸発させることによりジルコ
ニア粉体を摘出した。To solve the above problems, in the present invention, the zirconia compound waste material after injection molding is heated and the resin is evaporated to extract the zirconia powder.
【０００５】[0005]
【作用】ジルコニアコンパウンドは無機物であるジルコ
ニア粉体と有機物である樹脂から構成されている。その
ため、ジルコニアコンパウンドを５００℃前後で加熱す
れば、有機物である樹脂だけを選択的に蒸発させること
ができる。このような方法によれば、射出成形後のジル
コニアコンパウンド廃材から、ジルコニアの物性を損な
わずにジルコニア粉体を摘出することができる。The zirconia compound is composed of zirconia powder which is an inorganic substance and resin which is an organic substance. Therefore, if the zirconia compound is heated at about 500 ° C., it is possible to selectively evaporate only the organic resin. According to such a method, zirconia powder can be extracted from the waste zirconia compound material after injection molding without impairing the physical properties of zirconia.
【０００６】[0006]
【実施例】以下に、本発明に基づき説明する。図１は、
本発明に基づく熱分解を３０、６０、９０分間実施した
後のジルコニアコンパウンド中のバインダー蒸発量を測
定した結果をまとめた図である。これより、５００℃で
６０分間以上の熱分解を実施すればバインダーはすべて
蒸発してしまうことがわかる。The present invention will be described below based on the present invention. Figure 1
It is the figure which put together the result of having measured the binder evaporation amount in the zirconia compound after thermally decomposing based on this invention for 30, 60, and 90 minutes. From this, it is understood that if the thermal decomposition is carried out at 500 ° C. for 60 minutes or more, all the binder is evaporated.
【０００７】次に、熱分解により摘出したジルコニア粉
体の物性を分析した。図２は、遠心式自動粒度分布測定
装置により測定した粒度分布測定の結果を示している。
（ａ）は熱分解により摘出したジルコニア粉末の粒度分
布を示し、（ｂ）は実験に用いたコンパウンドの原料と
なる未加工のジルコニア粉末の粒度分布を示している。
両者の結果に大きな違いは認められない。Next, the physical properties of the zirconia powder extracted by thermal decomposition were analyzed. FIG. 2 shows the results of particle size distribution measurement performed by a centrifugal automatic particle size distribution measuring device.
(A) shows the particle size distribution of the zirconia powder extracted by thermal decomposition, and (b) shows the particle size distribution of the raw zirconia powder used as the raw material of the compound used for the experiment.
There is no significant difference between the two results.
【０００８】図３は、ＦＴＩＲによる測定結果である。
（ａ）は熱分解により摘出したジルコニア粉末の測定結
果、（ｂ）は実験に用いたコンパウンドの原料となる未
加工のジルコニア粉末の測定結果である。両者の結果に
大きな違いは認められない。図４は、ＸＲＤによる測定
結果である。（ａ）は熱分解により摘出したジルコニア
粉末の測定結果、（ｂ）は実験に用いたコンパウンドの
原料となる未加工のジルコニア粉末の測定結果である。
両者の結果に大きな違いは認められない。FIG. 3 shows the measurement results by FTIR.
(A) is a measurement result of the zirconia powder extracted by thermal decomposition, (b) is a measurement result of the unprocessed zirconia powder used as the raw material of the compound used for experiment. There is no significant difference between the two results. FIG. 4 shows the measurement results by XRD. (A) is a measurement result of the zirconia powder extracted by thermal decomposition, (b) is a measurement result of the unprocessed zirconia powder used as a raw material of the compound used for experiment.
There is no significant difference between the two results.
【０００９】[0009]
【発明の効果】以上の結果が示すように、ジルコニアコ
ンパウンドを５００℃前後で加熱すれば、有機物である
樹脂だけを選択的に蒸発させることができ、射出成形後
のジルコニアコンパウンド廃材から、ジルコニアの物性
を損なわずにジルコニア粉体を摘出することができる。
従って、このジルコニア粉体を新たにジルコニアコンパ
ウンドのジルコニア粉体原料として使用することが可能
となる。As shown by the above results, if the zirconia compound is heated at about 500 ° C., only the resin which is an organic substance can be selectively evaporated. The zirconia powder can be extracted without impairing the physical properties.
Therefore, this zirconia powder can be newly used as a zirconia powder raw material for a zirconia compound.
【００１０】熱分解する温度、時間はコンパウンドを構
成してある有機物の種類に左右されるため、温度、時間
の値はコンパウンドの種類に合わせ多少の調整が必要で
ある。Since the temperature and time of thermal decomposition depend on the type of the organic substance constituting the compound, the values of temperature and time need to be adjusted to some extent according to the type of compound.
【図１】本発明による加熱温度とバインダー蒸発量の関
係図である。FIG. 1 is a relationship diagram between a heating temperature and a binder evaporation amount according to the present invention.
【図２】（ａ）は熱分解により摘出したジルコニア粉末
を遠心式自動粒度分布測定装置により測定した粒度分布
図である。 （ｂ）は実験に用いたコンパウンドの原料となる未加工
のジルコニア粉末を遠心式自動粒度分布測定装置により
測定した粒度分布図である。FIG. 2 (a) is a particle size distribution diagram of zirconia powder extracted by thermal decomposition, measured by a centrifugal automatic particle size distribution measuring device. (B) is a particle size distribution diagram of unprocessed zirconia powder, which is a raw material of the compound used in the experiment, measured by a centrifugal automatic particle size distribution measuring device.
【図３】（ａ）は熱分解により摘出したジルコニア粉末
をフーリエ変換赤外分光装置により測定したＦＴＩＲチ
ャートである。 （ｂ）は実験に用いたコンパウンドの原料となる未加工
のジルコニア粉末をフーリエ変換赤外分光装置により測
定したＦＴＩＲチャートである。FIG. 3A is an FTIR chart obtained by measuring the zirconia powder extracted by thermal decomposition with a Fourier transform infrared spectroscope. (B) is an FTIR chart of raw zirconia powder, which is a raw material of the compound used in the experiment, measured by a Fourier transform infrared spectroscope.
【図４】（ａ）は熱分解により摘出したジルコニア粉末
をＸ線回折装置により測定したＸ線回折チャートであ
る。 （ｂ）は実験に用いたコンパウンドの原料となる未加工
のジルコニア粉末をＸ線回折装置により測定したＸ線回
折チャートである。FIG. 4 (a) is an X-ray diffraction chart of zirconia powder extracted by thermal decomposition, measured by an X-ray diffractometer. (B) is an X-ray diffraction chart obtained by measuring an unprocessed zirconia powder as a raw material of the compound used in the experiment with an X-ray diffractometer.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 恒見 雅彦 東京都江東区亀戸６丁目31番１号 セイコ ー電子工業株式会社内 (72)発明者 矢作 誠治 東京都江東区亀戸６丁目31番１号 セイコ ー電子工業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masahiko Tsunemi, 6-1, 31 Kameido, Koto-ku, Tokyo Seiko Electronics Co., Ltd. (72) Seiji Yahagi 6-31-1, Kameido, Koto-ku, Tokyo No. Seiko Electronics Industry Co., Ltd.
Claims (1)
ルコニアコンパウンドにおいて、射出成形後のジルコニ
アコンパウンド廃材を加熱することによりジルコニア粉
体を摘出し、このジルコニア粉体を新たにジルコニアコ
ンパウンドの原料として再利用することを特徴とする射
出成形後のジルコニアコンパウンド廃材再生方法。1. In a zirconia compound, which is a kneaded product of zirconia powder and a resin, zirconia powder is extracted by heating waste zirconia compound after injection molding, and this zirconia powder is newly used as a raw material for the zirconia compound. A method for recycling waste zirconia compound after injection molding, which is characterized by reuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3199536A JPH0543243A (en) | 1991-08-08 | 1991-08-08 | Method for regenerating scrap of zirconia compound after injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3199536A JPH0543243A (en) | 1991-08-08 | 1991-08-08 | Method for regenerating scrap of zirconia compound after injection molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0543243A true JPH0543243A (en) | 1993-02-23 |
Family
ID=16409470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3199536A Pending JPH0543243A (en) | 1991-08-08 | 1991-08-08 | Method for regenerating scrap of zirconia compound after injection molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0543243A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008024555A (en) * | 2006-07-21 | 2008-02-07 | Tosoh Corp | Zirconia fine powder, its manufacturing method and its use |
-
1991
- 1991-08-08 JP JP3199536A patent/JPH0543243A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008024555A (en) * | 2006-07-21 | 2008-02-07 | Tosoh Corp | Zirconia fine powder, its manufacturing method and its use |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0321807A3 (en) | Process for recycling waste materials | |
| SE7415328L (en) | PROCEDURE FOR SEPARATING THERMOPLASTIC MATERIAL IN THE FORM OF FILM FROM A HEAVY MIXTURE OF PAPER AND PLASTIC, AS WELL AS DEVICE FOR PERFORMING THE PROCEDURE | |
| ATE95464T1 (en) | METHOD AND DEVICE FOR THE MANUFACTURE OF MOLDED PARTS. | |
| ATE5057T1 (en) | PROCESS FOR THE MANUFACTURE OF SMALL-PIECE POLYOLEFIN MOLDING COMPOUNDS WITH CONDUCTIVITY SOOT AND THEIR USE FOR THE MANUFACTURE OF MOLDINGS. | |
| JPH0543243A (en) | Method for regenerating scrap of zirconia compound after injection molding | |
| DE59802091D1 (en) | METHOD AND DEVICE FOR THE PRODUCTION OF MOLDED BODIES FROM MILLED MATERIAL | |
| ATE72167T1 (en) | DEVICE AND METHOD FOR MAKING AN OBJECT BY MICROWAVE HEATING. | |
| GB1042577A (en) | Production of porous thermoplastic resins | |
| DE19606121A1 (en) | Solid wastes subjected to biological-mechanical preliminary thermal treatment | |
| ATE3955T1 (en) | DEVICE FOR DRYING FOUNDRY MOLDS AND CORE. | |
| JPS5524703A (en) | Method of producing mold | |
| JP2000189929A (en) | Treatment of waste material | |
| JPS56116795A (en) | Manufacture of solid fuel using waste plastic | |
| JPS5584244A (en) | Microwave hardening casting sand | |
| Bidlingmaier et al. | Experience gained in the composting of wet solid wastes obtained during the separate reclamation of valuable materials. | |
| IE42555B1 (en) | Process for facilitating the separation of plastics film from paper in city solid wastes | |
| JPS5749630A (en) | Recovering method of vinyl chloride resin | |
| DE69514255D1 (en) | METHOD AND DEVICE FOR PRODUCING A FUEL BY CONTINUOUS PYROLYSIS OF CRUSHED OR PASTE WASTE | |
| Trick | Phenolic/Carbon Pyrolysis Reaction Mechanism for Intelligent Processing of Carbon/Carbon | |
| O'Donnell et al. | Material Processing and Thermal Expansion Performance of Three Invar Alloys | |
| Kloubert et al. | Plastics recycling | |
| Hinrichs et al. | Environmental effects on the control of advanced composite materials processing | |
| Tokudome et al. | Effect of solvation on the hydrolysis and properties of precipitates | |
| SU925867A1 (en) | Method for producing pellets of phosphogypsum | |
| JPH0636810U (en) | Recycled chip circulation device |