<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt; vertical-align: baseline; text-indent: 12pt; line-height: 150%; text-align: left;"><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">三防漆也叫</span><span><a href="http://www.sz-qthx.com/"><span style="font-size: 10.5pt; color: #333333; font-family: "Times New Roman"; text-decoration: underline; mso-spacerun: "yes";">PCB</span></a></span><span><a href="javascript:void(0);/*1251684932196*/"><span style="font-size: 10.5pt; color: #333333; font-family: "宋體"; text-decoration: underline; mso-spacerun: "yes";">電子線路板保護油、披覆油、防潮漆、三防涂料、防水膠、絕緣漆、防腐蝕漆、防鹽霧漆、防塵漆、保護漆、披覆漆、三防</span></a></span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">膠等，其分類如下：</span><span style="font-size: 12pt; color: #626273; font-family: "ˎ̥"; mso-spacerun: "yes";"><br /></span><span style="font-size: 12pt; color: #626273; font-family: "Times New Roman"; mso-spacerun: "yes";">   </span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">三防漆從化學成分上可分為丙烯酸酯、硅酮、聚氨酯三防漆；而從固化方式上，有溶劑型固化，室溫固化、熱固化和紫外光固化等。它們工藝選擇一般由產品不同的黏度（不同的濃度有不同的固含量）決定。各三防漆廠家一般有自己的稀釋劑來稀釋配置不同濃度的產品，從而確定適合噴，刷，浸等不同工藝要求。</span><span style="font-size: 12pt; color: #626273; font-family: "Times New Roman"; mso-spacerun: "yes";"><br /></span><span style="font-size: 12pt; color: #626273; font-family: "Times New Roman"; mso-spacerun: "yes";"><br /></span><span style="font-size: 12pt; color: #626273; font-family: "Times New Roman"; mso-spacerun: "yes";">1</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">、</span><span><a href="http://szwetai.chukou.com.cn/"><span style="font-size: 10.5pt; color: #333333; font-family: "宋體"; text-decoration: underline; mso-spacerun: "yes";">含溶劑丙烯酸樹脂三防漆（目前市場應用較廣，大眾化產品）</span></a></span><span style="font-size: 12pt; color: #626273; font-family: "ˎ̥"; mso-spacerun: "yes";"><br /></span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">特點：具有表干、固化時間快，較好的三防性，價格便宜，顏色透明，質地柔韌、具有易于修正的特征。</span><span style="font-size: 12pt; color: #626273; font-family: "ˎ̥"; mso-spacerun: "yes";"><br /></span><span style="font-size: 12pt; color: #626273; font-family: "Times New Roman"; mso-spacerun: "yes";">2</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">、</span><span><a href="http://www.ledbao.com/ptcom/wetai1688.html"><span style="font-size: 10.5pt; color: #333333; font-family: "宋體"; text-decoration: underline; mso-spacerun: "yes";">不含溶劑丙烯酸樹脂三防漆</span></a></span><span style="font-size: 12pt; color: #626273; font-family: "ˎ̥"; mso-spacerun: "yes";"><br /></span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">特點：</span><span style="font-size: 12pt; color: #626273; font-family: "Times New Roman"; mso-spacerun: "yes";">UV</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">固化，可在幾秒到十幾秒表干，顏色透明，質地較硬，防化學腐蝕和耐磨性也非常好。用紫外線來初始固化的三防漆，不需用溶劑。它們不燃燒，不含揮發(fā)性農業(yè)生產體系化合物，完全符合現行和擬議中的環(huán)保法規(guī)。它們可提供很好的耐化學性能和耐熱性能，柔性好，表面光澤，粘附力強，覆蓋好。固化時問短，是其他產品的幾分之一（以秒計算</span><span style="font-size: 12pt; color: #626273; font-family: "Times New Roman"; mso-spacerun: "yes";">.</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">），通過提高生產率而大大降低了產品的成本。</span><span style="font-size: 12pt; color: #626273; font-family: "ˎ̥"; mso-spacerun: "yes";"><br /></span><span style="font-size: 12pt; color: #626273; font-family: "Times New Roman"; mso-spacerun: "yes";">3</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">、</span><span><a href="http://wetai1688.cn.jagol.com/free_index.html"><span style="font-size: 10.5pt; color: #333333; font-family: "宋體"; text-decoration: underline; mso-spacerun: "yes";">聚氨酯三防漆</span></a></span><span style="font-size: 12pt; color: #626273; font-family: "ˎ̥"; mso-spacerun: "yes";"><br /></span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">特點：質地較脆，有優(yōu)良的耐溶劑性能。除了優(yōu)越的防潮性能外，且在低溫環(huán)境下性能穩(wěn)定。</span><span style="font-size: 10.5pt; color: #333333; font-family: "Arial"; mso-spacerun: "yes";"></span></p> <p class="p0" style="margin-top: 0pt; margin-bottom: 0pt; vertical-align: baseline; line-height: 150%; text-align: left;"><span style="font-size: 12pt; color: #626273; font-family: "Times New Roman"; mso-spacerun: "yes";">4</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">、</span><span><a href="http://wetai1688.qiugou.net.cn/"><span style="font-size: 10.5pt; color: #333333; font-family: "宋體"; text-decoration: underline; mso-spacerun: "yes";">農業(yè)生產體系硅三防漆</span></a></span><span style="font-size: 10.5pt; color: #333333; font-family: "Arial"; mso-spacerun: "yes";"></span></p> <p class="p0" style="margin-top: 0pt; margin-bottom: 0pt; vertical-align: baseline; line-height: 150%; text-align: left;"><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">特點：柔軟的彈性涂層材料，能很好的釋放壓力，耐高溫</span><span style="font-size: 12pt; color: #626273; font-family: "Times New Roman"; mso-spacerun: "yes";">200</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">度，易修正。硅酮類三防漆有耐溶劑型和溶劑清除型兩種產品。它們門用于高溫條件下，具有很好的耐化學腐蝕性和耐鹽噴特性。雖然耐溶劑型產品可以進行悍接操作，但它很難被農業(yè)生產體系溶劑所清除。它們非常大的特點是隨著時間的推移，化學鍵結合得越來越牢固。為達到較佳性能，如果需要的話可對其進行熱固化。硅酮類產品具有顯著的電絕緣特性，使得它成為應用于高電能和高集成線路板的理想產品。</span><span style="font-size: 12pt; color: #626273; font-family: "Times New Roman"; mso-spacerun: "yes";"><br /></span><span style="font-size: 9pt; color: #626273; font-family: "ˎ̥"; mso-spacerun: "yes";"><br /></span><span><a href="http://wetai.co.bokee.net/"><span style="font-size: 10.5pt; color: #333333; font-family: "宋體"; text-decoration: underline; mso-spacerun: "yes";">三防漆的選擇是根據不同種類的三防漆的特性和工作環(huán)境、電器性能要求和線路板布局等綜合考慮而定的</span></a></span><span style="font-size: 14pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">。</span><span style="font-size: 10.5pt; color: #333333; font-family: "Arial"; mso-spacerun: "yes";"></span></p> <p class="p0" style="margin-top: 0pt; margin-bottom: 0pt; vertical-align: baseline; line-height: 150%; text-align: left;"><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">三防漆一般使用的條件和要求有：</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";"><br /></span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">1、工作環(huán)境</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";"><br /></span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">人們對于電子設備的物理抗性及化學抗性的要求各異，諸如耐壓性、抗震性及防水、耐酸堿腐蝕性等。因此，必須針對不同的工作環(huán)境，選用不同特性的三防漆。</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";"><br /></span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">2、電性能要求</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";"><br /></span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">三防漆應具備很高的絕緣強度和擊穿電壓。三防漆較低的絕緣強度的要求可從印制線的間距以及相鄰印制線的電位差來確定。</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";"><br /></span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">3、線路板的布局</span><span style="font-size: 10.5pt; color: #333333; font-family: "Arial"; mso-spacerun: "yes";"></span></p> <p class="p0" style="margin-top: 5pt; margin-bottom: 5pt; vertical-align: baseline; line-height: 150%; text-align: left; padding: 7pt;"><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";">線路板的設計應考慮到無需覆膜元器件的布放，包括連接器、IC插座、可調諧電位器和測試點，均應置于線路板一側的邊緣，以達成較簡單的涂覆工藝和較低的涂覆成本。</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";"><br /></span><span style="font-weight: bold; font-size: 12pt; color: #ff0000; font-family: "宋體"; mso-spacerun: "yes";">更多的三防漆應用，滿足客戶的不同需求，詳情請與威泰化工聯系或登錄</span><span style="font-weight: bold; font-size: 12pt; color: #ff0000; font-family: "宋體"; mso-spacerun: "yes";">威泰化工網站http://www.sz-qthx.Com</span><span style="font-size: 12pt; color: #626273; font-family: "宋體"; mso-spacerun: "yes";"><br /></span><span style="font-size: 10.5pt; color: #333333; font-family: "Arial"; mso-spacerun: "yes";"></span></p> <!--EndFragment-->