摘 要

Abstract……………………………………………………………………………………………5

1 绪论…………………………………………………………………………………………….7

1.1 纳米SiO₂发展动态………………………………………………………….…………….…7

1.2 纳米SiO₂气凝胶隔热机理……………………………………………….………………….8

1.3 TiO₂红外阻隔剂作用原理......................................................................................................10

1.4 研究基本内容………………………………..……………………………….......................11

2 实验过程…………………………………………..…………………………….....................12

2.1 实验样品及器材……………………..………………………………....................………..12

2.1.1 检测原理……………….……………………………………………....................…..…..12

2.1.1.1红外测温仪…….………………………………………………….......................……...12

2.1.1.2 Hot Disk热常数分析仪……………………………………………....................………13

2.2 实验步骤…………………………………………………………….........……….………..14

2.2.1 粘结剂的遴选…………………….………………………………………………..……..15

2.2.2 分析及优化纳米SiO₂气凝胶…………………………………….........………..……….17

2.2.3 热压参数对隔热性能的影响…………………………………………...………………..17

2.3 样品检测……………………………….………………………………..…...……………..17

3 实验结论……………………………………………………………………………………..19

3.1 粗侧结果讨论………………………………………………………………….……..……19

3.2 Hot Disk热常数分析仪检测结果讨论……………………………………......……..……20

4 讨论…………………………………………………………………………………………..22

4.1 纳米二氧化硅气凝胶隔热卷烟纸的发展前景………………………………….…..……22

4.2 纳米二氧化硅气凝胶隔热卷烟纸的应用前景……………………………….……..……22

参考文献…………………………………………………………………………………..……23

致谢………………………………………………………………………………………..……24

摘 要

本文基于“一种非燃烧型低温卷烟用纳米二氧化硅气凝胶隔热卷烟纸及制备方法”所申请的专利技术，对纳米SiO₂气凝胶隔热纸的制备工艺及性能进行了研究和探讨。该隔热卷烟纸具有双层纸复合结构，包含四种介质层，由上到下依次为表层纸、隔热介质层、底层纸和浸润阻隔层。其中，隔热介质层由微米热塑性聚合物颗粒和纳米SiO₂气凝胶颗粒及微米TiO₂颗粒，按一定配比均匀掺混组成。通过铝板热压的方法，形成表层纸和底层纸之间含有纳米SiO₂气凝胶和微米TiO₂的隔热双层纸复合结构。实验过程中，在满足无毒或低毒前提下，基于粘结复合性能，遴选了熔点在50~125℃范围内的热塑性材料，通过实际效果对比，最终选定聚乙酸乙烯酯作为粘结剂，并对纳米SiO₂气凝胶进行了分析和优化、对热塑性材料的组分及热压参数与隔热性能的影响关系进行了深入研究，所得结果对于低温不燃香烟的实际应用具有重要的指导意义。

论文主要分析了纳米SiO₂ 气凝胶结构和隔热机理，以及TiO₂作为红外阻隔剂作用原理；纳米二氧化硅气凝胶及二氧化钛含量对于卷烟纸的隔热效果，以及在不同温度下隔热效果的变化。

研究结果表明：纳米SiO₂气凝胶颗粒及微米TiO₂颗粒复合粉末铺层在隔热卷烟纸中起到了隔热作用，实验结果良好。

本文的特色在于：将纳米二氧化硅气凝胶的隔热性能与二氧化钛的红外阻隔性能相结合，制备出可用于低非燃烧型低温卷烟的隔热卷烟纸。

关键词：纳米SiO₂气凝胶；TiO₂；粘结剂；隔热卷烟纸。

Abstract

This thesis provides a non-flammable cryogenic airgel insulation cigarette rolling papers and preparation methods of nano-silica, the cigarette paper has a double insulation paper composite structure includes four dielectric layers from the upper to the lower order of surface paper, insulation dielectric layer, the base sheet and infiltration barrier. Wherein the insulating dielectric layer is made of a thermoplastic polymer particles of micron and nano-SiO₂ airgel particles and micron TiO₂ particles uniformly blended composition by a certain ratio. Aluminum by hot pressing method to form a double layer of paper insulation composite structure containing nano-SiO₂ aerogels and micron TiO₂ surface between the paper and the bottom paper. During the experiment, to meet non-toxic or low toxicity premise, based on composite bonding performance, the selection of the melting point of the thermoplastic material is in the range of 50 ~ 125 ℃, and by comparing the actual results, the final selection of polyvinyl acetate as the binder late nano-SiO₂ aerogels were analyzed and optimization of component parameters and affect the relationship between hot and insulating properties of the thermoplastic material in-depth study, the results for the low temperature non-flammable cigarette practical application of important guiding significance .

Thesis talks about nano SiO₂ airgel insulation structure and mechanism, as well as TiO₂ infrared blocking agent to act as a principle; nano-silica aerogels and titanium dioxide content of the cigarette paper for thermal insulation, thermal insulation and at different temperatures The change.