KR960010576A - 분말압출 및 사출성형용 결합제 및 그 결합제를 이용한 분말압출 및 사출성형체의 제조방법 - Google Patents

분말압출 및 사출성형용 결합제 및 그 결합제를 이용한 분말압출 및 사출성형체의 제조방법 Download PDF

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KR960010576A
KR960010576A KR1019940023087A KR19940023087A KR960010576A KR 960010576 A KR960010576 A KR 960010576A KR 1019940023087 A KR1019940023087 A KR 1019940023087A KR 19940023087 A KR19940023087 A KR 19940023087A KR 960010576 A KR960010576 A KR 960010576A
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binder
injection molding
powder
extrusion
powder extrusion
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KR1019940023087A
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KR970005878B1 (ko
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정원용
조태식
이석희
이진영
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김은영
한국과학기술연구원
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
    • B22F1/103—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing an organic binding agent comprising a mixture of, or obtained by reaction of, two or more components other than a solvent or a lubricating agent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
    • B28B7/42—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for heating or cooling, e.g. steam jackets, by means of treating agents acting directly on the moulding material
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62625—Wet mixtures
    • C04B35/6264—Mixing media, e.g. organic solvents
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
    • C04B35/6267—Pyrolysis, carbonisation or auto-combustion reactions
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63472—Condensation polymers of aldehydes or ketones
    • C04B35/63476—Phenol-formaldehyde condensation polymers
    • 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
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602—Making the green bodies or pre-forms by moulding
    • C04B2235/6022—Injection moulding

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Powder Metallurgy (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

본 발명은 분말압출 및 사출성형용 결합제 및 결합제를 이용한 분말압출 및 사출성형체의 제조방법에 관한 것으로, 종래 분말사출 및 사출성형기술인 WITEC공정, AMAX공정, Rivers공정은 결합제 및 결합제 제거방식에 따라 각각 여러가지 문제점을 안고 있었다.
이에 본 발명은 무기분말을 기준으로 에폭시수지 3－20wt%, 에폭시수지의 경화제 1－5wt%, 용매 5.0－20.0wt%, 가소제 0.5－3.0wt%, 윤활제 0.5－3.0wt%로 구성되는 결합제와, 이 결합제를 이용한 압출 및 사출 성형체의 제조방법을 제공함으로써 분말압출 및 사출성형체의 성형성, 형태안정성, 치수정밀도를 향상시키고, 제조공정을 간소화하며, 제조비용을 절감하도록 한 것이다.

Description

분말압출 및 사출성형용 결합제 및 그 결합제를 이용한 분말압출 및 사출성형체의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (12)

  1. 무기분말을 기준으로 에폭시수지 3-20wt%, 에폭시수지의 경화제 1-5wt%,용매 5.0-20.0wt%, 가소제 0.5-3.0wt%, 윤활제 0.5-3.0wt%로 구성함을 특징으로 하는 분말압출 및 사출성형용 결합제.
  2. 제1항에 있어서, 상기 에폭시수지는 모든 2관능, 3관능, 4관능 에폭시수지가 선택적으로 사용가능한 것임을 특징으로 하는 분말압출 및 사출성형용 결합제.
  3. 제1항에 있어서, 상기 에폭시수지의 경화제는 성형조건에 따라 모든 저온용, 중온용, 고온용 결화제가 선택적으로 사용 가능한 것임을 특징으로 하는 분말 압출 및 사출성형용 결합제.
  4. 제3항에 있어서, 상기 상온용 경화제를 사용하는 경우의 금형의 온도는 50-120℃범위이고, 고온용 경화제를 사용하는 경우의 금형의 온도는 120-200℃범위인 것을 특징으로 하는 분말압출 및 사출성형용 결합제.
  5. 제1항에 있어서, 상기 용매는 물, 또는 에탄올, 또는 물과 에탄올의 혼합물 중에서 선택된 것임을 특징으로 하는 분말압출 및 사출성형용 결합제.
  6. 제5항에 있어서, 상기 용매중 물과 에탄올의 혼합물은 물이 1.0-5.0wt%이고, 에탄올은 4.0-10.0wt%인 것을 특징으로 하는 분말압출 및 사출성형용 결합제.
  7. 제1항에 있어서, 상기 가소제는 디메틸 프탈레이트, 디에틸 프탈레이트, 디부틸 프탈레이트, 글리세린, 프로필렌 글리콜 중에서 선택된 것임을 특징으로 하는 분말압출 및 사출성형용 결합제.
  8. 제1하에 있어서, 상기 윤활제는 왁스류, 스테아르산, 올레산, 폴리에틸렌, 글리콜 주에서 선택된 것임을 특징으로 하는 분말압출 및 사출성형용 결합제.
  9. 무기분말을 결합제와 혼합하여 압출 및 사출성형한 후, 결합제를 제거하고, 소결을 실시하는 분말압출및 사출성형체의 제조방법에 있어서, 상기 무기분말과 결합되는 결합제를 무기분말을 기준으로 에폭시수지 3-20wt%, 에폭시수지의 경화제 1-5wt%, 용매 5.0-20.0wt%, 가소제 0.5-3.0wt%, 윤활제 0.5-3.0wt%로 구성함을 특징으로 하는 분말압출 및 사출성형체의 제조방법.
  10. 제9항에 있어서, 상기 무기분말과 결합제는 상온에서 혼합되고, 압출 및 사출성형시 금형의 온도는 50-200℃범위이며, 금형에서의 유지시간은 30초 내지 5분의 변화폭을 갖고 수행됨을 특징으로 하는 분말 압출 및 사출성형체의 제조방법.
  11. 제9항 또는 제10항에 있어서, 상기 결합제와 혼합되고 압출 및 사출성형이 가능한 무기분말은 평균입도가 0.1-100㎛를 갖는 금속분말, 세라믹분말, 합금분말 중에서 선택된 것임을 특징으로 하는 분말압출 및 사출성형체의 제조방법.
  12. 제9항에 있어서, 상기 결합제 제거공정은 열분해법으로 수행됨을 특징으로 하는 분말압출 및 사출성 형체의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940023087A 1994-09-13 1994-09-13 분말압출 및 사출성형용 결합제 및 그 결합제를 이용한 분말압출 및 사출성형체의 제조방법 KR970005878B1 (ko)

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KR1019940023087A KR970005878B1 (ko) 1994-09-13 1994-09-13 분말압출 및 사출성형용 결합제 및 그 결합제를 이용한 분말압출 및 사출성형체의 제조방법

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KR1019940023087A KR970005878B1 (ko) 1994-09-13 1994-09-13 분말압출 및 사출성형용 결합제 및 그 결합제를 이용한 분말압출 및 사출성형체의 제조방법

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KR970005878B1 KR970005878B1 (ko) 1997-04-21

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