高效过滤材料性能的研究

摘  要
随着科学技术的不断发展，现代工业产品的生产和现代化科学实验活动对室内空气洁净度的要求越来越高，高效过滤材料的应用是越来越广泛，发挥着越来越重要的作用。
本文在利用现有实验装置的基础上对杭州滤纸、聚丙烯滤纸以及玻纤滤纸等10种滤纸的阻力性能和过滤性能进行测试和研究，并对三类滤纸的机械性能进行了测试和分析。在实验室无法进行滤纸的分粒级效率测试的情况下，参考了国外同类装置后，设计加工了分粒级效率检测装置，提出了实验方案，进行了滤纸的分粒级效率的测试。
实验结果表明，在测试风速范围内，随着风速的增大，滤纸的阻力线性增长，过滤效率越高的滤纸随着流量的增加，阻力增长越快。从穿透率曲线可以得出，在测试条件下，杭州滤纸最易穿透滤速在11cm/s左右，99.9%玻纤滤纸的最易穿透滤速在14cm/s左右。在测试的粒径范围内，中效滤纸的分粒级效率随粒径的增大而增大，高效滤纸的分粒级效率随粒径变化不明显。玻纤滤纸手折纸的性能更加优于玻纤滤纸机折纸，为以后处理粒子粒径分布不同的粉尘过滤材料的选择提供参考。

关键词：高效过滤材料，玻纤滤纸，分粒级效率，穿透率
 
Study on Properties of High Efficiency Filter Material
ABSTRACT
With the development of science and technology, modern industrial production and modern scientific experiment activities have a higher requirements of the indoor’s air cleaning, the application of high efficiency filter material is increasingly widely and these filter materials playing an even more important role.
In this paper, the resistance and penetration rate of 10 kinds of filter paper such as Hangzhou filter paper, polypropylene and glass fiber filter paper were tested and studied by using of existing experimental devices, the mechanical properties of the three mentioned types of filter paper were also tested and analyzed. As the filter paper’s fractionated efficiency can not be tested in our laboratory, a fractionated efficiency tester has been designed referencing to similar foreign equipment. The experimental program was proposed and the test of filter paper’s fractionated efficiency has been carried out.
The experiment results showed that, with the increase of the wind speed, the filter's resistance linear increase, the higher the filtration efficiency of filter paper is, the faster the resistance grew. We can conclude from the transmittance curve that: under the test conditions, Hangzhou filter paper’s easiest penetrating filtration velocity is 11cm/s more or less, and  the glass fiber filter paper(99.9%)’s easiest penetrating filtration velocity is 14cm/s more or less. In the test particle size range, the efficiency to different particle size of filter paper’s increase with the increase of particle size, and high efficiency filter paper’s fractionated efficiency did not change significantly. The performance of hand folding glass fiber filter paper is better than machine folding glass fiber filter paper, it offered reference comments for later selection processing of different particle size distribution to dust filter material.
Key words: high efficiency filter material，glass fiber filter paper， efficiency to different particle size，rate of penetration

目 录   20000字
毕业设计（论文）任务书    I
摘  要    II
ABSTRACT    III
第一章 引言    1
1.1高效过滤材料概述    1
1.1.1空气过滤材料的发展    1
1.1.2 高效过滤材料的特点    1
1.1.3 高效空气过滤器检测标准    2
1.1.4 过滤材料的发展趋势    3
1.2 高效过滤材料检测方法简介    4
1.2.1 DOP法    4
1.2.2 钠焰法    4
1.2.3 油雾法    5
1.2.4 粒子计数法    5
1.3 本课题的研究的主要内容和意义    5
1.3.1 本课题的研究的主要内容    5
1.3.2 本课题的研究意义    6
第二章 过滤理论    7
2.1 过滤机理    7
2.2 滤纸效率计算    8
2.2.1 惯性机理    8
2.2.2 扩散原理    9
2.2.3 过滤机理的合并    9
2.2.4 滤材效率计算    10
第三章 实验装置及方案    11
3.1 试验装置    11
3.2 实验方案    19
3.3 实验材料    21
第四章 实验数据处理与分析    23
4.1 过滤阻力    23
4.2 穿透率    34
4.3 机械强度    45
4.4分粒级效率    51
第五章 结论与展望    61
5.1 实验结论    61
5.2 展望    61
参考文献    63
致谢    65