聚对苯二甲酸乙二醇酯滤料超疏水表面的制备及性能

董伟; 钱付平; 李晴; 项腾飞; 春铁军; 鲁进利; 韩云龙; 夏勇军; 胡笳

doi:10.13801/j.cnki.fhclxb.20200421.003

聚对苯二甲酸乙二醇酯滤料超疏水表面的制备及性能

doi: 10.13801/j.cnki.fhclxb.20200421.003

董伟^{1, 2,},
钱付平^1, ,,
李晴^1,,
项腾飞^1,,
春铁军^2,,
鲁进利^1,,
韩云龙^1,,
夏勇军^3,,
胡笳^3,

1.
安徽工业大学　建筑工程学院，马鞍山 243032
2.
安徽工业大学　冶金工程学院，马鞍山 243032
3.
安徽欣创节能环保科技股份公司，马鞍山 243071

基金项目: 安徽省科技重大专项(18030801109)

详细信息

通讯作者:
钱付平，博士，教授，博士生导师，研究方向为通风除尘系统及建筑环境细颗粒控制理论及技术　E-mail：fpingqian@163.com

中图分类号: TB306; TF09
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- 被引次数: 0
出版历程
- 收稿日期: 2020-03-02
- 录用日期: 2020-04-13
- 网络出版日期: 2020-04-22
- 刊出日期: 2020-12-15

Preparation and properties of polyethylene terephthalate filter material with superhydrophobic surface

DONG Wei^{1, 2
,},
QIAN Fuping^{1
, ,},
LI Qing^1
,,
XIANG Tengfei^1
,,
CHUN Tiejun^2
,,
LU Jinli^1
,,
HAN Yunlong^1
,,
XIA Yongjun^3
,,
HU Jia^3
,

1.
School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243032, China
2.
School of Metallurgical Engineering, Anhui University of Technology, Maanshan 243032, China
3.
Anhui Xinchuang Energy Saving and Environment Protection Science and Technology Corporation Limited, Maanshan 243071, China

摘要

摘要: 以聚对苯二甲酸乙二醇酯(PET)滤料为基体材料，正硅酸乙酯(TEOS)和甲基三乙氧基硅烷(MTES)为改性剂，采用溶胶-凝胶法，制备超疏水性PET滤料。在此基础上，采用场发射扫描电子显微镜(FESEM-EDS)、傅里叶变换红外光谱仪(FTIR)和接触角测试仪研究PET滤料改性前后的微观形貌、表面组成以及接触角等参数。研究表明：改性前后滤料微观孔隙率基本不变，TEOS改性的PET(T-PET)滤料由于形成大量亲水性的—OH基团，呈现完全润湿性；MTES改性的PET(M-PET)滤料表面存在疏水性的—CH₃基团，呈现高疏水性；TEOS和MTES共同改性的PET (MT-PET)滤料表面由于大量疏水性的—CH₃基团，且有大量的含有—CH₃基团SiO₂纳米粒子沉积在纤维表面，降低了滤料表面能，形成纳米级粗糙、褶皱甚至凸起形态；MT-PET的静态接触角(WCA)为(158.8±1.2)°，流失角(WSA)为(6.9±1.5)°，达到超疏水状态。此外，通过喷涂湿粉尘和水中浸泡(室温)滤料对比试验，表明MT-PET滤料具有良好的自清洁性能与稳定性。综上，本文中MT-PET超疏水滤料的制备，对于高湿环境下的袋式除尘材料的研究开发具有潜在价值。
- 聚对苯二甲酸乙二醇酯滤料 /
- 超疏水 /
- 溶胶-凝胶法 /
- 高湿环境 /
- 自清洁性能
Abstract: Superhydrophobic polyethylene terephthalate (PET) filter was prepared by sol-gel method with PET filter as matrix material, tetraethyl orthosilicate (TEOS) and methyl triethoxysilane (MTES) as modifiers. Field emission scanning electron microscopy (FESEM-EDS), Fourier transform infrared spectrometer (FTIR) and contact angle measurement were introduced to investigate the micro morphology, surface composition and contact angle of PET filter material before and after modification. The results show that the porosity of the filter material is slightly changed after modification. TEOS-modified PET (T-PET) filter material shows superhydrophilic due to the formation of a large numbers of hydrophilic —OH groups. On the contrary, hydrophobic —CH₃ groups are existed on the surface of MTES modified PET (M-PET) filter material, which endows high hydrophobicity. Moreover, TEOS and MTES modified PET (MT-PET) filter material displays superhydrophobicity due to lots of SiO₂ nanoparticles covered by —CH₃ groups are deposited on the fiber surface, reducing the surface energy of the filter material and forming micro-nano, wrinkled and even convex structure. MT-PET presents static contact angle (WCA) of (158.8±1.2)° with water shedding angle (WSA) of (6.9±1.5)°, indicating superhydrophobic state of MT-PET filter material. In addition, through the contrast test of spraying wet dust and soaking filter material in water (room temperature), it shows that MT-PET filter material has good self-cleaning performance and stability. In conclusion, the preparation of superhydrophobic MT-PET filter material in this paper has potential value for the research and development of bag filter material in high humidity environment.
- polyethylene terephthalate filter /
- superhydrophobic /
- sol-gel method /
- high humidity environment /
- self-cleaning performance

HTML全文

图 1 不同改性剂添加量时PET滤料产物的表面微观形貌SEM图像

Figure 1. SEM images of the surface micromorphology of PET filter products with different modifier additions

下载: 全尺寸图片幻灯片

图 2 不同改性剂添加量时PET滤料产物的表面EDS图像

Figure 2. EDS images of PET filter products with different modifier additions

下载: 全尺寸图片幻灯片

图 3 不同改性剂添加量时PET滤料产物的FTIR图谱

Figure 3. FTIR spectra of PET filter products with different modifier additions

下载: 全尺寸图片幻灯片

图 4 不同改性剂添加量时PET滤料产物的WCA

Figure 4. WCA of PET filter products with different modifier additions

下载: 全尺寸图片幻灯片

图 5 不同湿度粉尘在PET和MT-PET滤料表面的自清洁过程

Figure 5. Self-cleaning process of dust with different humidity on the surface of PET and MT-PET filter materials

下载: 全尺寸图片幻灯片

图 6 室温下不同浸泡时间对MT-PET滤料浸润性的影响

Figure 6. Effect of different immersion time on the wettability of MT-PET at room temperature

下载: 全尺寸图片幻灯片

图 7 MT-PET超疏水滤料制备机制

Figure 7. Preparation mechanism of MT-PET superhydrophoic filter material

下载: 全尺寸图片幻灯片

表 1 不同改性剂添加量时PET滤料的具体配方

Table 1. Formulation of PET filter with different modifiers loading

Sample	PET/g	TEOS/g	MTES/g
Polyethylene terephthalate (PET)	1.0	0	0
TEOS-modified PET (T-PET)	1.0	4.0	0
MTES-modified PET (M-PET)	1.0	0	4.0
TEOS and MTES modified PET (MT-PET)	1.0	2.5	1.5
Notes: TEOS—Tetraethyl orthosilicate; MTES—Methyl triethoxysilane.

下载: 导出CSV

表 2 不同改性剂添加量时PET滤料产物的EDS元素成分

Table 2. EDS element content of PET filter products with different modifier additions wt%

Sample		PET	T-PET	M-PET	MT-PET
Element	C	66.18	61.94	78.25	73.28
	O	33.82	33.58	18.29	19.78
	Si	0	4.48	3.46	9.94

下载: 导出CSV

表 3 不同改性剂添加量时PET滤料产物的静态接触角(WCA)和水流失角(WSA)

Table 3. Water contact angle(WCA) and water shedding angle (WSA) of PET filter products with different modifier additions

Sample	WCA /(º)	WSA/(º)
PET	119.7±2.8	20.5±1.7
T-PET	0	−
M-PET	138.6±1.6	15.6±1.7
MT-PET	158.8±1.4	6.9±1.2

下载: 导出CSV

表 4 不同湿度粉尘对PET和MT-PET滤料WCA的影响

Table 4. Effect of dust with different humidity on WCA of PET and MT-PET filter material

Sample	Humidity of dust/%	WCA/(°)
PET	6	109.7±2.5
	9	102.6±2.1
	12	86.8±1.6
MT-PET	6	156.6±1.4
	9	153.9±1.8
	12	151.1±1.6

下载: 导出CSV

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