超細粉體材料的制備及其對水性防水涂料的改性研究 本科畢業(yè)論文

摘  要

采用溶膠-凝膠法制備了超細粉體TiO2，研究了pH值和煅燒溫度對超細粉體TiO2質(zhì)量影響。結(jié)果表明，反應(yīng)溶液的pH值控制在7左右可得到性能優(yōu)良的粉體；煅燒溫度控制在800℃左右，可得到金紅石型超細粉體TiO2；通過不同成膜物質(zhì)的性能比較，選擇純丙乳液作為主要成膜物質(zhì)；研究了不同分散劑以及超細粉體TiO2加入方式對超細粉體TiO2分散性的影響，研究了超細粉體TiO2、顏基比對水性防水涂料性能的影響。結(jié)果顯示，六偏磷酸鈉和羧甲基纖維素作超細粉體TiO2的分散劑分散性能最好；將超細粉體TiO2制成水懸浮液加入到水性防水涂料中，其分散效果最好；在水性防水涂料中加入超細粉體TiO2可顯著改善產(chǎn)品性能；選擇顏基比為1時涂膜的耐水性、耐酸、耐堿性最好；確定了超細粉體TiO2改性水性防水涂料的最佳配方；產(chǎn)品性能經(jīng)檢測符合國家標準。
關(guān)鍵詞：超細粉體水懸浮液  水性防水涂料  分散  純丙乳液 

ABSTRACT

Ultrafine powder TiO2 particle was synthesized by using a sol-gel method, different pH values affecting reaction process and roasting temperature affecting the quality of ultrafine powder TiO2 particle were studied. It was found that the performance of the powder was excellent when the pH value was controlled around at 7. And when the roasting temperature was controlled around at 800℃, the sample of ultrafine powder TiO2 was rutile.
Compared with the performance of different film-forming substances, then chose the pure acrylic emulsion as the main film-forming substances. The dispersion effect of ultrafine powder TiO2 was studied by using different dispersing agents and the way of adding ultra-fine powder TiO2. Also the performance of waterborne waterproof coatings was effected by ultra-fine powder TiO2 and P/B. The results showed that calgon and carboxymethyl cellulose were used to disperse ultrafine powder TiO2 and the diversification effect was best. When the ultrafine powder TiO2 aqueous suspension was added into waterborne waterproof coatings, the diversification effect was best. At the same time, the performance of waterborne waterproof coatings was improved significantly when the ultrafine powder TiO2 was added in. when the P/B was 1, the film of water resistance, acidity resistance, alkali resistance was best. At last, the best formula was determined, and the performance of product has been tested in line with national standards.
Keywords: Ultrafine powder aqueous suspension；Waterborne waterproof coatings；Dispersing；Pure acrylic emulsion

 
 
目 錄
中文摘要 I
英文摘要 II
1 緒 論 1
1.1 涂料概述 1
1.1.1涂料的定義 1
1.1.2涂料的組成 1
1.1.3涂料的作用 3
1.2 水性防水涂料的發(fā)展現(xiàn)狀 3
1.2.1乳化瀝青類 4
1.2.2改性瀝青類 4
1.2.3合成高分子類 4
1.3 超細粉體防水涂料的發(fā)展現(xiàn)狀 5
1.3.1超細粉體防水涂料國外發(fā)展現(xiàn)狀 5
1.3.2超細粉體防水涂料國內(nèi)研究現(xiàn)狀 6
1.4 超細粉體TiO2的制備工藝 7
1.4.1氣相法 7
1.4.2液相法 8
1.5 超細粉體的分散 9
1.5.1超細粉體的團聚機理 9
1.5.2超細粉體的分散機理 10
1.5.3分散劑的應(yīng)用與選擇 11
1.5.4超細粉體的分散方式 11
1.6 本課題研究的目的及意義 13
2 實驗部分 15
2.1 實驗主要試劑及儀器 15
2.2 溶膠凝膠法制備二氧化鈦 16
2.2.1水解產(chǎn)物的制備 16
2.2.2超細粉體TiO2的制備 16
2.3 純丙乳液的制備 16
2.4 固含量的檢測 17
2.5 二氧化鈦水懸浮液的制備 17
2.6 超細粉體TiO2分散性能表征 17
2.7 水性防水涂料的制備工藝 17
2.8 漆膜的制備 17
2.9 性能檢測 18
2.9.1干燥時間 18
2.9.2耐水性 18
2.9.3耐堿性 18
2.9.4耐酸性 18
2.9.5容器中涂料的狀態(tài) 18
2.9.6施工性 18
2.9.7貯存穩(wěn)定性 18
3 結(jié)果與討論 20
3.1 pH值對溶膠-凝膠工藝的影響 20
3.2 煅燒溫度對制備超細粉體TiO2的影響 21
3.3 主要成膜物質(zhì)的選擇 21
3.4 分散劑的選擇 22
3.5 超細粉體TiO2加入方式對分散穩(wěn)定性的影響 23
3.6 超細粉體TiO2對水性防水涂料性能的影響 24
3.7.顏基比的選擇 24
3.8 最佳配方的確定 27
4 產(chǎn)品性能檢測 28
5 結(jié)論 29
參考文獻 30
致  謝 33