Stability and heat transfer enhancement of machining use nanofluids prepared by carbon nanotube composite

doi:10.16085/j.issn.1000-6613.2019-0058

Abstract

Abstract:

Carbon nanotubes (CNTs) composites filled with sulfurized isobutylene(T321) were synthesized, by which the cutting nanofluids used for machining were prepared. The dispersion stability, thermal conductivity and rheological property of the nanofluids were studied, and the effects of acidification time, nanoparticle type and content, surfactant and test conditions on these properties were analyzed. The results showed that the filling rate of the composites was about 25%, and the optimal ratio of the two combined surfactants of SDBS and TW-80 was 3∶7 for preparing the stably dispersed nanofluids, and the optimal ratio of the combined surfactant to the composite was 5∶1. When the acidification time of CNTs was about 9 hours and under fully and stable dispersed conditions, the heat conductivity of the base solution could be increased by 110% by the composite, and the shape factor of CNTs had a most significant influence on the heat conductivity. The nanofluid was a non-newtonian fluid, and its viscosity was the smallest when the content of the combined surfactant was about 0.5%. Compared with the nanofluid prepared by the ordinary CNTs, the thermal conductivity and viscosity of the composite nanofluid were higher and smaller mainly due to that the surface of the composite was chemically modified in the end opening and filling process, leading to the better dispersion stability of the composite in the base solution.

Key words: carbon nanotube, composites, non-newtonian fluids, stability, heat transfer

摘要：

将润滑剂硫化异丁烯（T321）填充到碳纳米管（CNTs）内以后制成复合物，再利用复合物制备了一种纳米流体切削液，研究了该纳米流体的分散稳定性、导热和黏度特性，分析了酸化处理时间、碳管微粒类型与浓度、表面活性剂、测试条件等对上述性能的影响。结果表明，T321填充CNTs时的填充率为25%左右，制备稳定分散纳米流体所需的两种表面活性剂十二烷基苯磺酸钠（SDBS）与吐温-80（TW-80）的最佳复配比例为3∶7，复配活性剂与碳管的最佳比例为5∶1。当CNTs的酸化处理时间为9h左右，且在充分、稳定分散的条件下，复合物可使基液的热导率提高110%，CNTs的形状因子对热导率的影响最为显著。所制备的纳米流体为一种非牛顿流体，当活性剂质量分数为0.5%左右时，其动力黏度最小。与普通CNTs所制备的纳米流体比，复合物纳米流体的热导率更高、黏度更小，这是由于在CNTs的开口与内部填充过程中，其表面被化学修饰，使复合物在基础液中具有更好的分散稳定性。

关键词: 碳纳米管, 复合材料, 非牛顿流体, 稳定性, 传热

CLC Number:

TH17

Jiju GUAN,Jinsong CHEN,Tao LÜ,Xuefeng XU. Stability and heat transfer enhancement of machining use nanofluids prepared by carbon nanotube composite[J]. Chemical Industry and Engineering Progress, 2019, 38(10): 4674-4683.

关集俱,陈锦松,吕涛,许雪峰. 碳纳米管复合物纳米流体切削液的稳定性与强化换热[J]. 化工进展, 2019, 38(10): 4674-4683.

Figures/Tables 15

References 22

1	BYERS J P . Metalworking fluids [M]. 2nd ed. New York: Taylor & Francis, 2006: 179 - 180.
2	PARK K H , EWALD B , KWON P Y . Effect of nano-enhanced lubricant in minimum quantity lubrication balling milling[J]. Journal of Tribology, 2011, 133 (3): 3526-3537.
3	SHARMA A K , TIWARI A K , DIXIT A R . Effects of minimum quantity lubrication (MQL) in machining processes using conventional and nanofluid based cutting fluids: a comprehensive review[J]. Journal of Cleaner Production, 2016, 127: 1-18.
4	谭凤娱, 范晓彬, 张国亮, 等 . 碳纳米管的填充[J]. 化学通报, 2006, 69: 1-5.
	TAN F Y , FAN X B , ZHANG G L , et al . Filling carbon nanotubes[J]. Chemistry, 2006, 69: 1-5.
5	张滨, 刘畅, 成会明, 等 . 纳米碳管内包覆外来物质的研究进展[J]. 新型炭材料, 2003, 18(3): 174-180.
	ZHANG B , LIU C , CHENG H M , et al . Progress in carbon nanotubes filled with foreign substances[J]. New Carbon Materials, 2003, 18(3): 174-180.
6	LÜ T , HUANG S Q , YI F , et al . Self-lubrication performance of phenolic resin-bonded grinding wheel filled with inclusion complex of β-cyclodextrin and liquid lubricants[J]. Journal of Mechanical Engineering, 2017, 53(17): 160-171.
7	孟胜皓, 闫军, 汪明球, 等 . 碳纳米管表面改性及其应用于复合材料的研究现状[J]. 化工进展, 2014, 33(8): 2084-2088.
	MENG S H , YAN J , WANG M Q , et al . Surface modifications of carbon nanotubes and their application to composite materials[J]. Chemical Industry and Engineering Progress, 2014, 33(8): 2084-2088.
8	MARIAN V , TIBOR I , VILIAM V , et al . Diamond/carbon nanotube composites: RAMAN, FTIR and XPS spectroscopic studies[J]. Carbon, 2017, 111: 54-61.
9	SINHA R S , SAHU R P , YARIN A L . Nano-encapsulated smart tunable phase change materials[J]. Soft Matter., 2011, 7(19): 8823-8827.
10	LICEA JIMÉNEZ L , HENRIO P Y , LUND A , et al . MWNT reinforced melamine-formaldehyde containing alpha-cellulose[J]. Composites Science & Technology, 2007, 67(5): 844-854.
11	WENSELEERS W , VLASOV I I , GOOVAERTS E , et al . Efficient isolation and solubilization of pristine single-walled nanotubes in bile salt micelles[J]. Advanced Functional Materials, 2010,14(11): 1105-1112.
12	ISLAM M F , ROJAS E , BERGEY D M , et al . High weight fraction surfactant solubilization of single-wall carbon nanotubes in water[J]. Nano Letters, 2003,3(2): 269.
13	MATARREDONA O , RHOADS H , LI Z , et al . Dispersion of single-walled carbon nanotubes in aqueous solutions of the anionic surfactant NaDDBS[J]. Journal of Physical Chemistry B, 2003,107(48): 13357-13367.
14	王朋, 张迪, 石林, 等 . 天然有机质模型化合物分子结构对碳纳米管分散性的影响[J]. 中国环境科学, 2018, 38(9): 3429-3436.
	WANG P , ZHANG D , SHI L , et al . Effect of molecular structure on dispersion of carbon nanotubes by natural organic matter surrogates[J]. China Environmental Science, 2018, 38(9): 3429-3436.
15	MINSUK P , JUNMO P , JIYUN L , et al . Scaling of binding affinities and cooperativities of surfactants on carbon nanotubes[J]. Carbon, 2018, 139: 427-436.
16	LIN D , XING B . Adsorption of phenolic compounds by carbon nanotubes: role of aromaticity and substitution of hydroxyl groups[J]. Environmental Science & Technology, 2008, 42(19): 7254-7259.
17	TSANG S C , CHEN Y K , et al . A simple chemical method of opening and filling carbon nanotubes[J]. Nature, 1994, 372: 159-162.
18	段志伟, 揭晓华, 张艳梅 . 多壁碳纳米管的酸处理工艺研究[J]. 材料导报, 2012(16): 28-30.
	DUAN Z W , JIE X H, ZHANG Y M . Research on acid treatment of multi-walled carbon nanotubes[J]. Materials Review, 2012(16): 28-30.
19	屈健,张若梅,田敏 . 氧化铜-碳纳米管/水混合纳米流体的光热性能[J]. 化工进展, 2018, 37(6)： 2125-2131.
	QU J , ZHANG R M , TIAN M . Photo-thermal properties of hybrid Cu O-MWCNT/H₂O nanofluids[J]. Chemical Industry and Engineering Progress, 2018, 37(6): 2125-2131.
20	宣益民, 李强 . 纳米流体强化传热研究[J]. 工程热物理学报, 2000, 21(4): 466-470.
	XUAN Y M , LI Q . Heat transfer enhancement of nanofluids[J]. Journal of Engineering Thermophysics, 2000, 21(4): 466-470.
21	HAMILTON R L , CROSSER O K . IEC fundamentals [J]. Int. Heat Mass Trans., 1962, 2: 187-189.
22	张亚楠, 刘妮, 由龙涛.等. 表面活性剂对水基纳米流体特性影响的研究进展[J]. 化工进展, 2015, 34(4): 903-910.
	ZHANG Y N , LIU N , YOU L T , et al . Research progress in the effect of surfactants on the characteristics of H₂O-based nanofluids[J]. Chemical Industry and Engineering Progress, 2015, 34(4): 903-910.

碳管种类	吸光度
碳管种类	MOA-5	TW-80	OP-10	SDS-1	SDS-2	SDBS
酸化CNTs	0.314	1.352	1.041	0.827	1.347	1.335
CNTs复合物	0.302	1.432	1.068	0.894	1.408	1.426

碳管种类	吸光度
碳管种类	MOA-5	TW-80	OP-10	SDS-1	SDS-2	SDBS
酸化CNTs	0.314	1.352	1.041	0.827	1.347	1.335
CNTs复合物	0.302	1.432	1.068	0.894	1.408	1.426

纳米流体	不同复配比例纳米流体的吸光度
纳米流体	1∶9^①	3∶7^①	5∶5^①	7∶3^①	9∶1^①
SDS-2 + 酸化CNTs	1.404	1.456	1.525	1.505	1.459
SDS-2 + 复合物	1.489	1.516	1.567	1.498	1.501
SDBS + 酸化CNTs	1.512	1.524	1.502	1.442	1.403
SDBS + 复合物	1.612	1.698	1.597	1.514	1.497

纳米流体	不同复配比例纳米流体的吸光度
纳米流体	1∶9^①	3∶7^①	5∶5^①	7∶3^①	9∶1^①
SDS-2 + 酸化CNTs	1.404	1.456	1.525	1.505	1.459
SDS-2 + 复合物	1.489	1.516	1.567	1.498	1.501
SDBS + 酸化CNTs	1.512	1.524	1.502	1.442	1.403
SDBS + 复合物	1.612	1.698	1.597	1.514	1.497

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