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class="iconfont"></i>發(fā)布日期：<span>2020-06-24</span> </h3> </div> </div> <div id="ljn7dbd" class="content"><p><span style="color: rgb(51, 51, 51); font-family: 微軟雅黑; background-color: rgb(255, 255, 255);"> 稀釋劑是一種用于降低膠粘劑黏度，使膠粘劑有好的浸透力，改進(jìn)工藝性能，有些能降低膠粘劑的活性，從而延長(cháng)膠粘劑的使用期的化合物。為了便于涂膠常采用稀釋劑來(lái)溶解黏料并調節所需要的黏度。</span><br style="box-sizing: border-box; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: 微軟雅黑; white-space: normal; background-color: rgb(255, 255, 255);"/><span style="color: rgb(51, 51, 51); font-family: 微軟雅黑; background-color: rgb(255, 255, 255);"> 稀釋劑可分非活性稀釋劑和活性稀釋劑兩種。</span><br style="box-sizing: border-box; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: 微軟雅黑; white-space: normal; background-color: rgb(255, 255, 255);"/><span style="color: rgb(51, 51, 51); font-family: 微軟雅黑; background-color: rgb(255, 255, 255);"> ①非活性稀釋劑這種稀釋劑的分子中不含有活性基團，大都是惰性溶劑，如乙醇、丙酮、甲苯等。在稀釋過(guò)程中不參加反應，它只是共混于樹(shù)脂之中并起到降低黏度的目的。除了起到稀釋作用之外，對機械性能、熱變形溫度、耐介質(zhì)及老化破壞等都有影響。應考慮到溶劑的揮發(fā)速度，若揮發(fā)速度太快，膠層表面易結成膜，妨礙膠層內部溶劑的逸出。導致膠層中產(chǎn)生氣泡；若揮發(fā)速度太慢，則在膠層內留有溶劑，從而會(huì )影響膠接強度。通常采用幾種不同沸點(diǎn)的溶劑相混來(lái)調節揮發(fā)速度。它多用于橡膠型膠粘劑、酚醛型膠粘劑、聚酯型膠粘劑和環(huán)氧膠粘劑等。</span><br style="box-sizing: border-box; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: 微軟雅黑; white-space: normal; background-color: rgb(255, 255, 255);"/><span style="color: rgb(51, 51, 51); font-family: 微軟雅黑; background-color: rgb(255, 255, 255);"> ②活性稀釋劑活性稀釋劑是分子中含有活性基團的稀釋劑。它在稀釋膠粘劑的過(guò)程中要參加反應，同時(shí)還能起增韌作用(如在環(huán)氧型膠粘劑中加入甘油環(huán)氧樹(shù)脂或環(huán)氧丙烷丁基醚等就能起增韌作用)。</span><br style="box-sizing: border-box; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: 微軟雅黑; white-space: normal; background-color: rgb(255, 255, 255);"/><br style="box-sizing: border-box; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: 微軟雅黑; white-space: normal; background-color: rgb(255, 255, 255);"/><span style="color: rgb(51, 51, 51); font-family: 微軟雅黑; background-color: rgb(255, 255, 255);"> 活性稀釋劑多用于環(huán)氧型膠粘劑中，其他類(lèi)型使用較少。</span></p></div> <div id="jt7fjlz" class="page"><p class="fl">上一篇：<a href="http://m.6oyt9e.cn/news/386.html">溶劑油的具體用途</a></p></a><p class="fr">下一篇：</a><a href="http://m.6oyt9e.cn/news/388.html">環(huán)?；钚韵♂寗秃腺|(zhì)量有何影響？</a></a></p></div> </div> </div> </div> </div> <div id="vtv7d7l" class="g-bottom"> <div id="pptt577" class="bottom"> <div id="jvj5fh7" class="bo-t"> <p><a href="/">網(wǎng)站首頁(yè)</a> | <a href="/about/">關(guān)于我們</a> | <a href="/product/">產(chǎn)品中心</a> | <a href="/news/">新聞中心</a> | <a href="/message/" rel="nofollow">在線(xiàn)留言</a> | <a href="/about_contact/lxfs024.html" target="_self" textvalue="聯(lián)系我們">聯(lián)系我們</a></p> </div> <div id="jl7vz7b" class="footer-b"> <em> <p><img src="/data/images/other/20200616095944_605.jpg"/></p> </em> <div id="xznffv7" class="cop fl" 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