低VOC含量的PET/PAAS/活性炭复合材料的制备及性能研究

doi:10.19491/j.issn.1001-9278.2020.06.013

中国塑料 ›› 2020, Vol. 34 ›› Issue (6): 80-86.DOI: 10.19491/j.issn.1001-9278.2020.06.013

低VOC含量的PET/PAAS/活性炭复合材料的制备及性能研究

于翔, 李如洋, 翟静雯, 谭缓缓

河南工程学院材料与化学工程学院，郑州 450007

收稿日期:2020-01-06 出版日期:2020-06-26 发布日期:2020-06-26

Preparation and Properties of PET/PAAS/Activated Carbon Composites with Low VOC Content

Xiang YU, Ruyang LI, Jingwen ZHAI, Huanhuan TAN

Department of Material and Chemical Engineering, Henan Institute of Engineering, Zhengzhou 450007, China

Received:2020-01-06 Online:2020-06-26 Published:2020-06-26

摘要/Abstract

摘要：

通过机械共混法制备了聚对苯二甲酸乙二醇酯（PET）/聚丙烯酸钠（PAAS）/活性炭复合材料，并通过差示扫描量热仪（DSC）、X射线衍射仪（XRD）和高效液相色谱仪（HPLC）对复合材料的热性能、晶体结构和挥发性有机化合物（VOC）含量等进行研究与分析。结果表明，活性炭的加入能提高PET/PAAS/活性炭复合材料的结晶度，降低复合材料中的VOC含量；随着活性炭的加入，PET/PAAS/活性炭复合材料的熔点先降低后升高，断裂强度呈先升高后降低，且分别在活性炭添加量为0.75 %与0.2 5%时达到最大值；当活性炭含量为1.25 %时，复合材料的甲醛去除率达到94.4 %，乙醛去除率达到92.1 %，丙酮去除率达到80.2 %。

关键词: 聚对苯二甲酸乙二醇酯, 挥发性有机化合物, 活性炭, 复合材料

Abstract:

In this study, the PET/PAAS/activated carbon composites were prepared by a mechanical blending method, and their thermal properties, crystal structure and VOC content were investigated by means of differential scanning calorimetry, X?ray diffraction and high?performance liquid chromatography. The results indicated that the addition of activated carbon improved the crystallinity of the composites but reduced their VOC content. The melting point of the composites was found to increase at first and then tend to decrease with an increase of activated carbon content. The composites achieved the maximum melting point and breaking strength at the activated carbon contents of 0.75 and 0.25 wt%, respectively. When 1.25 wt% of activated carbon was incorporated, the composites exhibited a formaldehyde removal rate of 97.54 %, a acetaldehyde removal rate of 92.1 %, and a acetone removal rate of 80.2 %.

Key words: poly(ethylene terephthalate), volatile organic compound, activated carbon, composite

中图分类号:

TQ323.4⁺1

于翔, 李如洋, 翟静雯, 谭缓缓. 低VOC含量的PET/PAAS/活性炭复合材料的制备及性能研究[J]. 中国塑料, 2020, 34(6): 80-86.

Xiang YU, Ruyang LI, Jingwen ZHAI, Huanhuan TAN. Preparation and Properties of PET/PAAS/Activated Carbon Composites with Low VOC Content[J]. China Plastics, 2020, 34(6): 80-86.

图/表 14

编号	PET含量/份	PAAS含量/份	活性炭含量*/份
1^#	100	0	0
2^#	97	3	0
3^#	97	3	0.25
4^#	97	3	0.50
5^#	97	3	0.75
6^#	97	3	1.00
7^#	97	3	1.25

表1 PET/PAAS/活性炭复合材料质量配比

Tab.1 Mass ratio of PET/PAAS/activated carbon composites

图1 醛酮类物质与DNPH反应通式

Fig.1 General reaction formula of aldehydes and ketones and DNPH

图2 PET/PAAS复合材料的升温、降温曲线

Fig.2 Heating and cooling curves of PET/PAAS composites

图3 不同活性炭添加量的PET/PAAS/活性炭复合材料的升温、降温曲线

Fig.3 Heating and cooling DSC curves of PET/PAAS/activated carbon composites with different amounts of activated carbon

活性炭添加量/%	T_m/℃	ΔH_m/J·g^?1	X_c/%	T₀/℃	T_c/℃
0	257.16	50.04	45.71	226.94	219.30
0.25	256.21	49.84	47.29	227.42	219.39
0.50	256.04	48.43	48.55	227.94	220.40
0.75	255.92	52.21	51.50	226.58	218.93
1.00	256.41	49.12	49.83	225.78	217.24
1.25	256.84	50.67	48.19	225.18	216.25

表2 PET/PAAS/活性炭复合材料升温、降温的热力学数据

Tab.2 Thermodynamic data of heating and cooling of PET/PAAS/activated carbon composites

图4 不同活性炭添加量的PET/PAAS/活性炭复合材料的熔点

Fig.4 Melting points of PET/PAAS/activated carbon composites with different amounts of activated carbon

图5 不同活性炭添加量的PET/PAAS/活性炭复合材料的结晶度

Fig.5 Crystallinity of PET/PAAS/activated carbon composites with different amounts of activated carbon

图6 不同活性炭添加量的PET/PAAS/活性炭复合材料的起始结晶温度与结晶温度

Fig.6 Initial crystallization temperature and crystallization temperature of PET/PAAS/activated carbon composites with different amounts of activated carbon

图7 不同活性炭添加量的PET/PAAS/活性炭复合材料的应力?应变曲线

Fig.7 Stress?strain curves of PET/PAAS/activated carbon composites with different amounts of activated carbon

活性炭添加量/%	初始模量/MPa
0	1 145
0.25	1 695
0.50	1 671
0.75	1 403
1.00	1 357
1.25	1 583

表3 PET/PAAS/活性炭复合材料的初始模量

Tab.3 Initial modulus of PET/PAAS/activated carbon composites

图8 不同活性炭添加量对PET/PAAS/活性炭复合材料的断裂强度与断裂伸长率的影响

Fig.8 Effect of different activated carbon content on breaking strength and elongation at break of PET/PAAS/activated carbon composites

图9 不同活性炭添加量的PET/PAAS/活性炭复合材料的XRD曲线

Fig. 9 XRD diffraction curves of PET/PAAS/activated carbon composites with different amounts of activated carbon

图10 活性炭含量为零时APET/PAAS/活性炭复合材料的液相色谱图

Fig.10 HPLC chromatogram of APET/PAAS/activated carbon composites without activated carbon

活性炭添加量/%	甲醛		乙醛		丙酮
活性炭添加量/%	峰面积之比	含量/μg·g^-1	峰面积之比	含量/μg·g^-1	峰面积之比	含量/μg·g^-1
0	2.402 5	2.285	0.947 3	1.321	0.315 8	0.581
0.25	1.554 9	1.479	0.735 2	1.025	0.273 6	0.503
0.50	1.052 8	1.001	0.462 4	0.645	0.201 6	0.371
0.75	0.823 6	0.783	0.367 8	0.513	0.143 5	0.264
1.00	0.647 8	0.616	0.213 5	0.298	0.104 1	0.191
1.25	0.135 4	0.128	0.075 4	0.105	0.062 4	0.115

表4 APET/PAAS/活性炭复合材料的VOC含量

Tab.4 VOC content of APET/PAAS/activated carbon composites

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低VOC含量的PET/PAAS/活性炭复合材料的制备及性能研究

Preparation and Properties of PET/PAAS/Activated Carbon Composites with Low VOC Content

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