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(아이오도메틸)트리메틸실란을 이용한 2-에티닐피리딘의 무촉매중합
손태관 ( Tae-kwan Son ),강병운 ( Byong-yun Kang ),제갈영순 ( Yeong-soon Gal ),심상연 ( Sang-yeon Shim ) 한국화상학회 2020 한국화상학회지 Vol.26 No.3
(아이오도메틸)트리메틸실란을 이용한 2-에티닐피리딘의 무촉매 중합을 통하여 N-(트리메틸실릴메틸) 피리디늄 아이오다이드를 측쇄로 갖는 새로운 공액구조 고분자를 합성하였다. 이 중합반응은 불균일하게 진행되었으며 중합수율은 95%로 매우 높았지만 생성된 고분자는 중합중 가교화반응으로 대부분의 유기용매에 용해하지 않았다. 합성 고분자의 분자구조를 분석한 결과 이온성 피리딜 치환기를 갖는 해당 고분자가 합성되었음을 확인할 수 있었다. 합성 고분자의 열적 특성과 몰폴로지 등을 TGA, EDX 등의 분석장비로 측정하고 분석하였다. A new ionic polyacetylene with the substituent of N-(trimethylsilylmethyl)pyridinium iodide was synthesized by the non-catalyst polymerization of 2-ethynylpyridine using (iodomethyl)trimethylsilane). The polymerization proceeded heterogeneously to yield 95% of polymer. However, the resulting polymer was insoluble in most organic solvents due to the cross-linking reaction during polymerization. The polymer structure was characterized to have a conjugated backbone system with the designed ionic pyridyl substituents. The thermal and morphological properties of the polymer were measured and discussed.
가진 시험 방법을 활용한 자동차 도어 플레이트 모듈 슬램 내구 평가
김찬중(Kim, Chan-Jung),손태관(Son, Tae-Kwan) 한국소음진동공학회 2012 한국소음진동공학회 논문집 Vol.22 No.10
Slam testing is a mandatory testing process to evaluate the fatigue resistance of a door plate module before delivering it to car makers. This process is very hard job to complete it since the testing facilities are considerably expensive and the required testing time is relatively very long, i.e. more than eight days for a single specimen. In this paper, an accelerated testing method of a door plate module is proposed using vibration test equipment instead of the current one by exposing to the critical excitation of a door glass. Under the proposed excitation method, the similar testing result can be evaluated within less than two hours. The suitability of the proposed testing method was demonstrated by comparing failure modes of both the current testing method and the proposed one.
정진오(Jin Oh Chung),고상렬(Sang Ryul Go),최종근(Jong Geun Choi),최희범(Hee Bum Choi),손태관(Tae Kwan Son) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5
To clarify the effect of friction temperature on transfer film formation in NAO friction material, friction tests composed of 100 consecutive braking under constant temperature were conducted at temperature of 300℃, 400℃, 500℃ and 600℃, respectively. After friction tests, counterpart disks used were collected for the examination of transfer film formation on friction surface. Friction test results showed that the friction coefficient did not change much with repeated braking under 500℃, but the friction coefficient decreased with repeated braking at 600℃. The transfer film was hardly found under 400℃, but was well developed at high temperature of 600℃. The decrease of friction coefficient with repeated braking in the case of 600℃ was attributed to the development of transfer film with repeated braking.
박형배(Hyung Bae Park),정성필(Sung Pil Jung),이필구(Pil Gu Lee),최희범(Hee Bum Choi),손태관(Tae Kwan Son) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
The brake system is a very important system for automobile safety. However, existing brake evaluation methods are not suitable for evaluating high performance brake systems. In this paper, driving in the F1 Circuit and measure data and developed an evaluation method for brake systems based on braking energy and braking power.