<span style="font-family:'helvetica neue', arial, helvetica, sans-serif;">도장검사 방법 중에서 <strong>도막이 경화(cure)된 정도를 알아보는 TEST방법</strong> 중 가장 많이 애용되고 사용하기 쉬운 방법이 MEK rub test에 대해서 알아보겠습니다.</span> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"> </span></div> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;">MEK Rub Test는 더 정확한 표현으로 Solvent Rub Test를 사용하는 것이 좋습니다.</span></div> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"> </span></div> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;">MEK가 용제(solvent) 중에서 강용제이며 주로 사용되기 때문에 MEK 테스트로 불리고,</span></div> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;">무기징크프라이머(Ethyl Silicate Inorganic Zinc Rich Primer)의 경화도를 평가하는데 주로 사용되기 때문에 Solvent Rub Test라는 용어보다 MEK테스트로 많이 사용됩니다.</span></div> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"> </span></div> <div class="separator" style="text-align:center;clear:both;"><a style="margin-right:1em;margin-left:1em;" href="https://3.bp.blogspot.com/-6P1yYpB7rzs/XNOt8a1UGBI/AAAAAAAALgA/Rnd01XyJtRUimM3EEQr6xBh5lEbQu-OKQCEwYBhgL/s1600/mek%2Brub%2Btest.PNG" target="_blank"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"><img width="320" height="272" title="MEK RUB TEST" alt="MEK RUB TEST" src="https://3.bp.blogspot.com/-6P1yYpB7rzs/XNOt8a1UGBI/AAAAAAAALgA/Rnd01XyJtRUimM3EEQr6xBh5lEbQu-OKQCEwYBhgL/s320/mek%2Brub%2Btest.PNG" border="0" filesize="81504"></span></a></div> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"> </span></div> <h4 class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;">MEK테스트의 장단점</span></h4> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"><strong><span style="color:#0000FF;">장점</span></strong>: 쉽고, 빠르고, 간편하다</span></div> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"><strong><span style="color:#FF0000;">단점</span></strong>: 비교평가, 동일 시험의 제한</span></div> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"> </span></div> <h4 class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;">Solvent Rub Test에 관련된 규격</span></h4> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;">ASTM <strong>D5402</strong> Standard Practice for Assessing the Solvent Resistance of Organic Coatings Using Solvent Rubs<br>ASTM <strong>D4752</strong> Standard Practice for Measuring MEK Resistance of Ethyl Silicate(Inorganic) Zinc-Rich Primers by Solvent Rub</span></div> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"> </span></div> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;">ASTM D5402는 유기도료의 내용제성을 평가하는 표준이며, D4752는 무기징크프라이머(무기도료)의 내용제(MEK에 대한)을 통해 무기징크프라이머의 경화도를 측정하는 표준입니다.</span></div> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"></span> </div> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"><strong><font size="2">Solvent Rub Test 방법(MEK테스트 방법)</font></strong></span> </span><ol><li> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"><strong>표준시편(fully cured control)</strong>과 Test시편을 준비한다</span></div></li> <li> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;">면봉이나 흰 천에 용제(MEK, solvent)를 충분히 적셔 <strong>일정한 압력으로 일정한 구간</strong>을 왕복하여 문지른다</span></div></li> <li> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;"><strong>동일 조건</strong>으로 두 시편에 테스트를 실시한다</span></div></li> <li> <div class="separator" style="text-align:left;clear:both;"><span style="font-family:'helvetica neue', arial, helvetica, sans-serif;">각각의 시편의 상태(광택, 도막손실 등)와 묻어난 상태를 <strong>비교하여</strong> 경화정도를 결정한다</span></div></li></ol></div>