방화구획 관통부 충전재는 화재시 열을 받으면

<div class="video-content" style='color: rgb(51, 51, 51); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: "Nanum Barun Gothic", "Nanum Gothic", Tahoma, Dotum, Verdana, Arial, "Trebuchet MS", "Nanum Gothic"; font-size: 13px; font-style: normal; font-weight: 400; word-spacing: 0px; white-space: normal; box-sizing: border-box; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; overflow-wrap: break-word;' data-video="true"><div class="fluid-width-video-wrapper" style="padding: 202.67px 0px 0px; width: 360px; position: relative; box-sizing: border-box; overflow-wrap: break-word;"><br class="Apple-interchange-newline"><iframe id="fitvid795416" src="https://www.youtube.com/embed/zVauZehkuk8?wmode=transparent" frameborder="0" allowfullscreen="true" style="left: 0px; top: 0px; width: 360px; height: 202.67px; position: absolute; box-sizing: border-box; overflow-wrap: break-word;" mozallowfullscreen="true" webkitallowfullscreen="true"></iframe></div></div><p style='margin: 5px 0px 0px; color: rgb(51, 51, 51); text-transform: none; line-height: 1.6; text-indent: 0px; letter-spacing: normal; font-family: "Nanum Barun Gothic", "Nanum Gothic", Tahoma, Dotum, Verdana, Arial, "Trebuchet MS", "Nanum Gothic"; font-size: 13px; font-style: normal; font-weight: 400; word-spacing: 0px; white-space: normal; box-sizing: border-box; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; overflow-wrap: break-word;' data-selector="p" data-edit="true"><span class="fsize13" style="font-size: 13px !important; box-sizing: border-box; overflow-wrap: break-word;">대부분의 방화구획 관통부 충전재는 화재시 열을 받으면 팽창하여 틈을 꽉 메꿔주는 역할을 하게 됩니다.<br style='font-family: "Open Sans"; box-sizing: border-box; overflow-wrap: break-word;'>영상은 화재시 열에의해 내화충전재가 어떻게 얼마만큼 팽창하는지 보여줍니다.<br style='font-family: "Open Sans"; box-sizing: border-box; overflow-wrap: break-word;'>내화페인트도 열에의해 팽창하는것은 같은 원리입니다.</span></p><p><br></p>