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公开(公告)号：KR1019980040589A
公开(公告)日：1998-08-17
申请号：KR1019960059810
申请日：1996-11-29
Applicant: 한국과학기술연구원
IPC: C09K3/14
Abstract: 자동차, 중장비 및 기차 등의 제동 시스템에 사용되는 마찰재로, 특히 고하중, 고속의 가혹한 조건하에서 우수한 마찰 특성과 내마모성을 지니는 청동계 소결 마찰재의 제조 방법이 기재되어 있다. 이 방법에 의한 청동계 소결 마찰재는 50∼80 wt%의 구리 분말과 5∼15 wt%의 주석 분말로 된 청동 기지 금속과 10∼50 wt%의 마찰 조절제 및 2∼10 wt%의 고체 윤활제로 구성되어 있으며, 이 때 마찰 조절제는 5∼15 wt%의 철 분말, 7∼15 wt%의 몰리브덴 분말, 2∼10 wt%의 내마모 첨가제 분말 및 2∼10 wt%의 세라믹 단섬유로 구성되어 있다.
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公开(公告)号：KR1019950013144B1
公开(公告)日：1995-10-25
申请号：KR1019920015606
申请日：1992-08-28
Applicant: 한국과학기술연구원
IPC: B01D39/00
Abstract: The magnetic polymer filter material comprises 40-90 wt.% of polymer selected from polycarbonate, polyethylene, polypropylene, polyamide, polyester, teflon, polymethacrylate, polyacronitrile, polystyrene or polyethylene phthalate; and 1-60 wt.% of magnetic material selected from barium based ferrites, strontium based ferrites or lanthanum based rare earth metals. The magnetic polymer filter material is prepd. by mixing the polymer and the magnetic material; forming a sheet or mat form by spinning extruder; preparing the filter form by cutting; then magnetizing using by a magnetizer. The obtd. magnetic polymer filter material has 20-500 gauss of magnetic force, 0.1-20 mm of thickness, and 0.1-200 micro meter of pore size; and diameter of the polymer fiber in spinning is 0.1-2.0 mm. The magnetic polymer filter material has excellent filtering efficiency to an impurities contg. iron components, oxidized iron or metal dust.
Abstract translation: 磁性聚合物过滤材料包含40-90重量％的选自聚碳酸酯，聚乙烯，聚丙烯，聚酰胺，聚酯，聚四氟乙烯，聚甲基丙烯酸酯，聚丙烯腈，聚苯乙烯或聚对苯二甲酸乙二醇酯的聚合物; 和1-60重量％的选自钡基铁氧体，锶基铁氧体或镧基稀土金属的磁性材料。 磁性聚合物过滤材料是制备的。 通过混合聚合物和磁性材料; 通过纺丝挤出机形成片材或垫子; 通过切割制备过滤器; 然后通过磁化器进行磁化。 有限公司 磁性聚合物过滤材料具有20-500高斯的磁力，0.1-20毫米的厚度和0.1-200微米的孔径; 纺丝时的聚合物纤维的直径为0.1〜2.0mm。 磁性聚合物过滤材料对杂质的过滤效率优异。 铁组分，氧化铁或金属粉尘。
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Patent Agency Ranking
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公开(公告)号：KR100002921B1
公开(公告)日：1969-03-31
申请号：KR1019680000507
申请日：1968-06-04
Applicant: 한국과학기술연구원
IPC: C10M175/00
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公开(公告)号：KR100394082B1
公开(公告)日：2003-08-06
申请号：KR1020010021385
申请日：2001-04-20
Applicant: 한국과학기술연구원
IPC: C10M129/70
Abstract: PURPOSE: Provided is an anhydride-based electrorheological fluid containing chitosan dicarboxylate, which is excellent in electrorheological property, dispersion-stability, corrosion-resistance, abrasion-resistance, friendly property to environment, and high temperature stability. CONSTITUTION: The anhydride-based electrorheological fluid is produced by a process comprising the steps of: reacting chitosan and dicarboxylic acid in the presence of a catalyst in dimethyl formamide at an ordinary temperature for 1-24 hours to obtain the chitosan dicarboxylate; mixing 1-50wt% of the chitosan dicarboxylate and 50-99wt% of a base oil at 30-80deg.C, wherein the chitosan dicarboxylate has an average particle diameter of 1-30 micrometer and the base oil is selected from mineral oil, vegetable oil, and synthetic oil.
Abstract translation: 用途：提供一种含有壳聚糖二羧酸酯的酸酐类电流变液，其电流变性，分散稳定性，耐腐蚀性，耐磨性，环境友好性和高温稳定性优异。 一种酸酐基电流变液，其制备方法包括以下步骤：将壳聚糖和二羧酸在催化剂存在下在二甲基甲酰胺中在常温下反应1-24小时，得到壳聚糖二羧酸酯; 在30-80℃混合1-50重量％的壳聚糖二羧酸酯和50-99重量％的基础油，其中壳聚糖二羧酸酯的平均粒径为1-30微米，基油选自矿物油，植物油 石油和合成油。
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