KR100574399B1 - 분말사출성형용 수용성 결합제 - Google Patents
분말사출성형용 수용성 결합제 Download PDFInfo
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- KR100574399B1 KR100574399B1 KR1020040085372A KR20040085372A KR100574399B1 KR 100574399 B1 KR100574399 B1 KR 100574399B1 KR 1020040085372 A KR1020040085372 A KR 1020040085372A KR 20040085372 A KR20040085372 A KR 20040085372A KR 100574399 B1 KR100574399 B1 KR 100574399B1
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- Prior art keywords
- binder
- injection molding
- molecular weight
- polyethylene glycol
- cellulose acetate
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/10—Esters of organic acids, i.e. acylates
- C08L1/14—Mixed esters, e.g. cellulose acetate-butyrate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
수평균분자량(g/mol) | 용융온도(℃) | 밀도(g/㎤) | |
PMMA1 | 60,000 | 1004 | 1.190 |
CAB2 | 11,000 | 985 | 1.175 |
PEG32k | 2,000 | 50 | 1.210 |
PEG3k | 3,350 | 54 | 1.212 |
PEG8k | 8,000 | 56 | 1.212 |
사출 후(MPa) | 용매추출, 건조 후(MPa) | |
비교예(왁스계)` | 1586±46 | 472±36 |
비교예(이성분계 결합제) | 7847±248 | 1025±27 |
발명예 | 11636±427 | 1564±258 |
평균치수±표준편차 (mm) | 표준편차/평균치수 | 소결밀도 | |
길이 | 58.47 ±0.02 | ±0.034% | 98% 이상 |
폭 | 5.84 ±0.005 | ±0.08% | |
두께 | 2.922 ±0.007 | ±0.23% |
조성(중량분율) | 비고 | |
비교예1 | CAB/PEG2k(35/65) | 형체 유지력은 뛰어나나 흐름의 안정성 개선 필요 |
비교예2 | CAB/PEG8k(35/65) | 용매추출후 크랙 등의 변형 발생 |
비교예3 | PMMA/PEGs(35/65) | 높은 점도로 가공하기 어려움 |
발명예 | PMMA/CAB/PEG8k(15/20/65) | 안정한 흐름과 뛰어난 형체 유지력 |
Claims (4)
- 폴리에틸렌글리콜 : 65중량%, 폴리메틸메타크릴레이트 : 5~25중량%, 나머지 : 셀룰로오스 아세테이트 부티레이트로 구성되는 것을 특징으로 하는 분말사출성형용 결합제.
- 제1항에 있어서,폴리메틸메타크릴레이트 수평균 분자량(Mn)이 10,000g/mol ~ 100,000g/mol인 것을 특징으로 하는 분말사출성형용 결합제.
- 제1항에 있어서,셀룰로우스 아세테이트 부티레이트는 부티레이트기를 20 ~ 60몰%를 포함하는 특징으로 하는 분말사출성형용 결합제.
- 제1항에 있어서,폴리에틸렌글리콜의 수평균 분자량이 15,000g/mol ~ 20,000g/mol인 것을 특징으로 하는 분말사출성형용 결합제.
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KR1020040085372A KR100574399B1 (ko) | 2004-10-25 | 2004-10-25 | 분말사출성형용 수용성 결합제 |
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KR1020040085372A KR100574399B1 (ko) | 2004-10-25 | 2004-10-25 | 분말사출성형용 수용성 결합제 |
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KR100574399B1 true KR100574399B1 (ko) | 2006-04-27 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0238502A (ja) * | 1988-07-28 | 1990-02-07 | Dai Ichi Kogyo Seiyaku Co Ltd | 射出成形用金属粉末組成物 |
US5641920A (en) | 1995-09-07 | 1997-06-24 | Thermat Precision Technology, Inc. | Powder and binder systems for use in powder molding |
US5741833A (en) | 1992-05-28 | 1998-04-21 | Fujitsu Limited | Raw material for injection molding |
KR20010055794A (ko) * | 1999-12-13 | 2001-07-04 | 신현준 | 분말사출성형용 고강도 결합제 |
KR20040067574A (ko) * | 2003-01-24 | 2004-07-30 | 학교법인 영남학원 | 분말사출성형에서 사용되는 고속탈지가 가능한 고강도수용성 결합제 |
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2004
- 2004-10-25 KR KR1020040085372A patent/KR100574399B1/ko active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0238502A (ja) * | 1988-07-28 | 1990-02-07 | Dai Ichi Kogyo Seiyaku Co Ltd | 射出成形用金属粉末組成物 |
US5741833A (en) | 1992-05-28 | 1998-04-21 | Fujitsu Limited | Raw material for injection molding |
US5641920A (en) | 1995-09-07 | 1997-06-24 | Thermat Precision Technology, Inc. | Powder and binder systems for use in powder molding |
KR20010055794A (ko) * | 1999-12-13 | 2001-07-04 | 신현준 | 분말사출성형용 고강도 결합제 |
KR20040067574A (ko) * | 2003-01-24 | 2004-07-30 | 학교법인 영남학원 | 분말사출성형에서 사용되는 고속탈지가 가능한 고강도수용성 결합제 |
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