<p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; text-align: center; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm;" align="center"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 14pt; line-height: 120%; font-family: 宋體;">納米二氧化鈦</span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 14pt; line-height: 120%;" lang="EN-US">JRNT22-03</span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 14pt; line-height: 120%; font-family: 宋體;" lang="EN-US"> </span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 14pt; line-height: 120%; font-family: 宋體;">在涂料中的應用效果及性能表征<span lang="EN-US"></span></span></strong></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;" lang="EN-US"><span style="font-size: small;"> </span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;"><span style="font-size: small;">一、納米涂料制備實驗部分<span lang="EN-US"></span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm;"><span style="font-size: small;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;" lang="EN-US"><span style="mso-spacerun: yes;">  </span></span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">改性苯丙乳液、潤濕劑、碳十二醇酯、乙二醇、納米二氧化鈦</span><span lang="EN-US">JRNT22-03</span><span style="font-family: 宋體; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">、</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">羥乙基纖維素、分散劑、調(diào)節(jié)助劑、其他助劑。<span lang="EN-US"></span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm;"><span style="font-size: small;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;" lang="EN-US"><span style="mso-spacerun: yes;">  </span></span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">在原有苯丙乳膠涂料配方中添加一定量的的納米二氧化鈦</span><span lang="EN-US">JRNT22-03</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">，先與顏料體系<span lang="EN-US">(</span>添加一定量的陰離子表面活性劑<span lang="EN-US">)</span>通過研磨進行預分散，再在體系中通過多功能分散機充分分散，配置成納米改性苯丙外墻乳膠涂料。<span lang="EN-US"></span></span></span></p> <p style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm;"><span style="font-size: 10.5pt; line-height: 120%;"><span style="font-family: 宋體;">二、納米改性涂料性能表征<span lang="EN-US"> </span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-pagination: widow-orphan;"><span style="font-size: small;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;" lang="EN-US">    </span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">經(jīng)過<span lang="EN-US">500</span>小時人工老化實驗，可以得出結(jié)論，在苯丙乳膠涂料中加入金紅石納米二氧化鈦</span><span lang="EN-US">JRNT22-03</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">和，，添加量在<span lang="EN-US">0.5</span>～<span lang="EN-US">1%</span>左右，涂膜的老化明顯降低，說明</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">納米二氧化鈦</span><span lang="EN-US">JRNT22-03</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">對紫外光起到了屏蔽作用，有效的保護了涂膜。根據(jù)變色差<span lang="EN-US">(E</span>值<span lang="EN-US">)</span>顯示，說明</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">納米二氧化鈦</span><span lang="EN-US">JRNT22-03</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">與納米二氧化硅</span><span style="font-family: 宋體;" lang="EN-US">JRNG42-30</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;" lang="EN-US"> </span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">配合使用對紫外屏蔽效果更好。<span lang="EN-US"> </span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-pagination: widow-orphan;"><span style="font-size: small;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">添加<span lang="EN-US">0.5%</span></span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">納米二氧化鈦</span><span lang="EN-US">JRNT22-03</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">改性涂料與不含</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">納米二氧化鈦</span><span lang="EN-US">JRNT22-03</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">的外墻乳膠涂料進行耐擦洗性和舒緩老化性等性能的對比測試。各項技術性能指標均有大幅度提高，涂料的抗摩擦和抗擦洗性能提高了<span lang="EN-US">13</span>倍。<span lang="EN-US"> </span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-pagination: widow-orphan;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;"><span style="font-size: small;">三、　機理分析<span lang="EN-US"> </span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-pagination: widow-orphan;"><span style="font-size: small;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;" lang="EN-US">    </span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">耐老化性能是涂料的一項重要性能，事實上材料的老化是多方面的，它包括紫外老化、熱老化、臭氧老化和化學老化等。在這些因素中紫外線是造成涂料老化的較重要因素。紫外線是一種比可見光波長短的電磁波，其波長介于<span lang="EN-US">200-400nm</span>，按波長大小可分為短波<span lang="EN-US">UVC(200-280nm)</span>、中波<span lang="EN-US">UVB(280-320nm)</span>、長波<span lang="EN-US">UVA(320-400nm)</span>。通常情況下，對材料造成老化的是中波紫外線和長波紫外線，因為短波紫外線一般情況下到達不了地球表面，但隨著地球臭氧層的不斷破壞，短波紫外線也開始輻射地球表層，紫外指數(shù)不斷增加。而輻射到地球表面的紫外線其波長越短，能量越強，對人體和高分子材料危害性和破壞性就越大。<span lang="EN-US">   </span></span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">納米二氧化鈦</span><span lang="EN-US">JRNT22-03</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">對紫外線的屏蔽是以吸收和散射為主，經(jīng)紫外分光光度儀檢驗，它對<span lang="EN-US">200nm</span>以上的紫外光線的屏蔽率高達<span lang="EN-US">99.99%</span>，當在水溶液中含量為十萬分之四時，對紫外光的屏蔽率仍然維持在<span lang="EN-US">99.9%</span>以上。納米氧化硅則是以反射為主，用美國<span lang="EN-US">Varian</span>公司<span lang="EN-US">Cary-5E</span>分光光譜儀對納米<span lang="EN-US">SiOX</span>多次抽樣測試，發(fā)現(xiàn)其光學反射譜重復性好，在紫外長波段<span lang="EN-US">(320nm-400nm)</span>反射率達到<span lang="EN-US">88%</span>；對紫外中波段<span lang="EN-US">(280nm-320nm)</span>反射率為<span lang="EN-US">85%</span>；對紫外短波段<span lang="EN-US">(200nm-280nm)</span>反射率仍在<span lang="EN-US">70-80%</span>。<span lang="EN-US"></span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-pagination: widow-orphan;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;"><span style="font-size: small;">四、　結(jié)論<span lang="EN-US"> </span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-pagination: widow-orphan;"><span style="font-size: small;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;" lang="EN-US">1</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">、添加了</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">納米二氧化鈦</span><span lang="EN-US">JRNT22-03</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">粉體的納米外墻乳膠涂料與普通乳膠涂料相比，耐擦洗性和舒緩老化性等性能提高了<span lang="EN-US">13</span>倍。 <span lang="EN-US"></span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-pagination: widow-orphan;"><span style="font-size: small;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;" lang="EN-US">2</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">、添加了</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">納米二氧化鈦</span><span lang="EN-US">JRNT22-03</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">粉體的納米外墻乳膠涂料與普通乳膠涂料相比，耐水、弱酸的時間增長<span lang="EN-US">2</span>倍，而且能有效的屏蔽紫外線。<span lang="EN-US"></span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-pagination: widow-orphan;"><span style="font-size: small;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;" lang="EN-US">3</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">、添加了</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">納米二氧化鈦</span><span lang="EN-US">JRNT22-03</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">粉體的納米外墻乳膠涂料與普通乳膠涂料相比，具有更好的防霉，平衡菌落能力，防污功能有了很大的提高。<span lang="EN-US"></span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-pagination: widow-orphan;"><span style="font-size: small;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;" lang="EN-US">4</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">、添加</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">納米二氧化鈦</span><span lang="EN-US">JRNT22-03</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">和納米二氧化硅</span><span style="font-family: 宋體;" lang="EN-US">JRNG42-30</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;">符合</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">材料對苯丙乳膠涂料改性效果較采用單一品種的納米材料更為顯著。<span lang="EN-US"></span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-pagination: widow-orphan;"><span style="font-size: small;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;" lang="EN-US">5</span><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;">、使用時，分散越好，上述效果越明顯。<span lang="EN-US"></span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-pagination: widow-orphan;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋體; mso-font-kerning: 0pt;" lang="EN-US"><span style="font-size: small;"> </span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;"><span style="font-size: small;">宣城晶瑞<span lang="EN-US"><span style="mso-spacerun: yes;">  </span>0563-2062192</span></span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;" lang="EN-US"><span style="font-size: small;"> </span></span></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 120%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm;"><span style="line-height: 120%; font-family: 宋體; mso-bidi-font-size: 10.5pt;" lang="EN-US"><span style="font-size: small;"> </span></span></p>