1
|
Liu R, Xia W, Otitoju TA, Wu W, Wang S, Li S, Zhang A, Chen X, Tang T, Liu J. Effect of oleic acid on improving flame retardancy of brucite in low‐density polyethylene composite. J Appl Polym Sci 2021. [DOI: 10.1002/app.51862] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Renjie Liu
- Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province, School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Wei Xia
- Department of Investigation Nonmetallic Mineral Industry Association of Liaoning Province Shenyang China
| | - Tunmise Ayode Otitoju
- School of Materials Science and Engineering Shenyang University of Technology Shenyang China
| | - Weidong Wu
- Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province, School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Song Wang
- Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province, School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Sanxi Li
- Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province, School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Ailing Zhang
- Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province, School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Xuecheng Chen
- Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province, School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Tao Tang
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Science Changchun China
| | - Jie Liu
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Science Changchun China
| |
Collapse
|
2
|
Qiang X, Guo X, Su H, Zhao H, Ouyang C, Huang D. In situ nanoarchitectonics of magnesium hydroxide particles for property regulation of carboxymethyl cellulose/poly(vinyl alcohol) aerogels. RSC Adv 2021; 11:35197-35204. [PMID: 35493185 PMCID: PMC9043012 DOI: 10.1039/d1ra06556d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/25/2021] [Indexed: 02/05/2023] Open
Abstract
Carboxymethyl cellulose (CMC)-based aerogels with low density, low thermal conductivity, and biodegradability are promising candidates for environmentally friendly heat-insulating materials. However, the application of CMC-based aerogels as insulation materials in building exterior walls is limited by the high water sensitivity, poor mechanical properties and high flammability of these aerogels. In this work, a simple hydration method was used to generate magnesium hydroxide (MH) directly from CMC/polyvinyl alcohol (PVA) mixed sol with active MgO obtained by calcined magnesite as the raw material. A series of composite aerogels with different MH contents were prepared through the freeze-drying method. Scanning electron microscopy showed that nanoflower-like MH was successfully synthesised in situ in the 3D porous polymer aerogel matrix. Compared with the mechanical properties and water resistance of the original CMC/PVA composite aerogels, those of the composite aerogels were significantly improved. In addition, the flame retardancy of the CMC/PVA composite aerogels was greatly enhanced by the introduction of MH into the polymer matrix, and the limiting oxygen index reached 35.5% when the MH loading was 60%.
Collapse
Affiliation(s)
- Xiaohu Qiang
- School of Material Science and Engineering, Lanzhou Jiaotong University Lanzhou 730070 PR China
| | - Xin Guo
- School of Material Science and Engineering, Lanzhou Jiaotong University Lanzhou 730070 PR China
| | - Hongxi Su
- School of Material Science and Engineering, Lanzhou Jiaotong University Lanzhou 730070 PR China
| | - Hong Zhao
- School of Material Science and Engineering, Lanzhou Jiaotong University Lanzhou 730070 PR China
| | - Chengwei Ouyang
- School of Material Science and Engineering, Lanzhou Jiaotong University Lanzhou 730070 PR China
| | - Dajian Huang
- School of Material Science and Engineering, Lanzhou Jiaotong University Lanzhou 730070 PR China
| |
Collapse
|
3
|
Guo J, Zhou Z, Ming Q, Sun D, Li F, Xi J, Wu Q, Yang J, Xia Q, Zhao X. Recovering chemical sludge from the zero liquid discharge system of flue gas desulfurization wastewater as flame retardants by a stepwise precipitation process. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:126054. [PMID: 33992018 DOI: 10.1016/j.jhazmat.2021.126054] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 05/01/2021] [Accepted: 05/03/2021] [Indexed: 06/12/2023]
Abstract
In this study, a five-stage stepwise precipitation process, including pre-sedimentation, magnesium removal, gypsum precipitation, ettringite precipitation and calcium removal, was proposed as a softening pretreatment for zero liquid discharge system for flue gas desulfurization wastewater. Batch tests and long-term bench-scale experiment showed that magnesium, sulfate and calcium were efficiently removed with efficiencies all above 98.0%, leaving a clean effluent majorly containing NaCl and NaOH. The precipitated CaSO4, CaCO3, Mg(OH)2 and ettringite were completely separated by stepwise precipitation, and the purity of Mg(OH)2 and ettringite were further enhanced by washing and soaking treatment. CaSO4 and CaCO3 can be directly recycled as gypsum product and desulfurizing agent within the power plant, while Mg(OH)2 and ettringite presented proper particle size and excellent thermal properties as a synergistic flame retardant. The flame retardancy of ethylene vinyl acetate copolymer were greatly improved when blended with recovered Mg(OH)2 and ettringite, and possessed better performance by blending them together because ettringite could act as a dispersing and compatible agent of Mg(OH)2, and relieve the intensity of smoke releasing. Chemical sludge recovery compensates the total cost of the five-stage process by 45.0%, and makes the process technically versatile, economically beneficial and environmentally friendly without solid waste production.
Collapse
Affiliation(s)
- Jiaming Guo
- Shanghai Engineering Research Center of Energy - Saving in Heat Exchange Systems, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Zhen Zhou
- Shanghai Engineering Research Center of Energy - Saving in Heat Exchange Systems, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
| | - Qiang Ming
- Shanghai Engineering Research Center of Energy - Saving in Heat Exchange Systems, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Dongqi Sun
- Shanghai Engineering Research Center of Energy - Saving in Heat Exchange Systems, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Fei Li
- Nantong Power Plant, Huaneng International Power Jiangsu Energy Development Co., Ltd., Nantong 226003, China
| | - Jiafu Xi
- Shanghai Engineering Research Center of Energy - Saving in Heat Exchange Systems, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Qiong Wu
- Nantong Power Plant, Huaneng International Power Jiangsu Energy Development Co., Ltd., Nantong 226003, China
| | - Jian Yang
- Nantong Power Plant, Huaneng International Power Jiangsu Energy Development Co., Ltd., Nantong 226003, China
| | - Qing Xia
- Shanghai Engineering Research Center of Energy - Saving in Heat Exchange Systems, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Xiaodan Zhao
- Shanghai Engineering Research Center of Energy - Saving in Heat Exchange Systems, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| |
Collapse
|
4
|
Synthesis of Transition Metal Complexes and Their Effects on Combustion Properties of Semi-Rigid Polyvinyl Chloride. MATERIALS 2021; 14:ma14102634. [PMID: 34069938 PMCID: PMC8157559 DOI: 10.3390/ma14102634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 05/13/2021] [Accepted: 05/16/2021] [Indexed: 12/01/2022]
Abstract
Using introduction of MoO42− and Fe3+, Cu2+, or Zn2+ into amphiphilic polymers (DN) via an ion-exchange reaction, different transition metal complexes, as retardants and smoke suppressants, including (DN)Mo, Fe(DN)Mo, Cu(DN)Mo, and Zn(DN)Mo were synthesized. Combined with the results of X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR), it could be determined that ionic bonding of these ions with DN occurred. Subsequently, the influence of flame-retardant, smoke-suppression, and mechanical properties of (DN)Mo, Fe(DN)Mo, Cu(DN)Mo, and Zn(DN)Mo on polyvinyl Chloride (PVC) were tested. It was demonstrated that transition metal complexes of three metal elements, Fe(DN)Mo, Cu(DN)Mo, and Zn(DN)Mo, showed better flame retardancy, smoke suppression, and thermal stability as confirmed by microcalorimetry, limiting oxygen index (LOI), smoke density, and thermogravimetric analysis (TGA) tests, in which Cu(DN)Mo worked best due to the Lewis acid mechanism and reductive coupling mechanism. Scanning electron microscopy (SEM) showed that the addition of (DN)Mo, Fe(DN)Mo, Cu(DN)Mo, and Zn(DN)Mo promoted the formation of a dense carbon layer on the PVC surface during combustion, which could protect the interior PVC. The addition of these transition metal complexes hardly impaired the mechanical properties of PVC.
Collapse
|
5
|
Edraki M, Sheydaei M, Alinia-Ahandani E, Nezhadghaffar-Borhani E. Polyvinyl chloride: chemical modification and investigation of structural and thermal properties. J Sulphur Chem 2021. [DOI: 10.1080/17415993.2021.1895996] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Milad Edraki
- Polymer Department, Technical Faculty, South Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Milad Sheydaei
- Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
| | | | | |
Collapse
|
6
|
Bedair TM, Heo Y, Ryu J, Bedair HM, Park W, Han DK. Biocompatible and functional inorganic magnesium ceramic particles for biomedical applications. Biomater Sci 2021; 9:1903-1923. [PMID: 33506843 DOI: 10.1039/d0bm01934h] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Magnesium ceramics hold promise for numerous biological applications. This review covers the synthesis of magnesium ceramic particles with specific morphologies and potential modification techniques. Magnesium ceramic particles possess multiple characteristics directly applicable to human biology; they are anti-inflammatory, antibacterial, antiviral, and offer anti-cancer effects. Based on these advantages, magnesium hydroxide nanoparticles have been extensively utilized across biomedical fields. In a vascular stent, the incorporation of magnesium ceramic nanoparticles enhances re-endothelialization. Additionally, tissue regeneration for bone, cartilage, and kidney can be promoted by magnesium ceramics. This review enables researchers to identify the optimum synthetic conditions to prepare magnesium ceramics with specific morphologies and sizes and select the appropriate modification protocols. It is also intended to elucidate the desirable physicochemical properties and biological benefits of magnesium ceramics.
Collapse
Affiliation(s)
- Tarek M Bedair
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi 13488, Korea.
| | | | | | | | | | | |
Collapse
|
7
|
Yao M, Wu H, Liu H, Zhou Z, Wang T, Jiao Y, Qu H. In-situ growth of boron nitride for the effect of layer-by-layer assembly modified magnesium hydroxide on flame retardancy, smoke suppression, toxicity and char formation in EVA. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2020.109417] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
8
|
Pan Y, Yuan Y, Wang D, Yang R. An Overview of the Flame Retardants for Poly(vinyl chloride): Recent States and Perspective
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000375] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ye‐Tang Pan
- National Engineering Technology Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology Beijing 100081 China
| | - Yongshuai Yuan
- National Engineering Technology Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology Beijing 100081 China
| | - De‐Yi Wang
- IMDEA Materials Institute C/Eric Kandel, 2, 28906 Getafe Madrid Spain
| | - Rongjie Yang
- National Engineering Technology Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology Beijing 100081 China
| |
Collapse
|
9
|
Meng W, Wu W, Zhang W, Cheng L, Han X, Xu J, Qu H. Bio‐based Mg(OH)
2
@M‐Phyt: improving the flame‐retardant and mechanical properties of flexible poly(vinyl chloride). POLYM INT 2019. [DOI: 10.1002/pi.5885] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Weihua Meng
- The Flame Retardant Materials and Processing Technology Engineering Technology Research Center, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental ScienceHebei University Baoding PR China
| | - Weihong Wu
- College of ScienceAgriculture University of Hebei Baoding PR China
| | - Weiwei Zhang
- The Flame Retardant Materials and Processing Technology Engineering Technology Research Center, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental ScienceHebei University Baoding PR China
| | - Luyao Cheng
- The Flame Retardant Materials and Processing Technology Engineering Technology Research Center, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental ScienceHebei University Baoding PR China
| | - Xiangzhuo Han
- The Flame Retardant Materials and Processing Technology Engineering Technology Research Center, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental ScienceHebei University Baoding PR China
| | - Jianzhong Xu
- The Flame Retardant Materials and Processing Technology Engineering Technology Research Center, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental ScienceHebei University Baoding PR China
| | - Hongqiang Qu
- The Flame Retardant Materials and Processing Technology Engineering Technology Research Center, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental ScienceHebei University Baoding PR China
| |
Collapse
|
10
|
Surface modification of magnesium hydroxide and its application in flame‐retardant oil‐extended styrene–ethylene–butadiene–styrene/polypropylene composites. J Appl Polym Sci 2018. [DOI: 10.1002/app.47129] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
11
|
Cheng L, Wu W, Meng W, Xu S, Han H, Yu Y, Qu H, Xu J. Application of metallic phytates to poly(vinyl chloride) as efficient biobased phosphorous flame retardants. J Appl Polym Sci 2018. [DOI: 10.1002/app.46601] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Luyao Cheng
- Engineering Technology Research Center for Flame-Retardant Materials and Processing Technology of Hebei Province, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding 071002 China
| | - Weihong Wu
- College of Science; Agriculture University of Hebei; Baoding 071000 China
| | - Weihua Meng
- Engineering Technology Research Center for Flame-Retardant Materials and Processing Technology of Hebei Province, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding 071002 China
| | - Shuo Xu
- Engineering Technology Research Center for Flame-Retardant Materials and Processing Technology of Hebei Province, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding 071002 China
| | - Hongda Han
- Engineering Technology Research Center for Flame-Retardant Materials and Processing Technology of Hebei Province, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding 071002 China
| | - Yongfang Yu
- Engineering Technology Research Center for Flame-Retardant Materials and Processing Technology of Hebei Province, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding 071002 China
| | - Hongqiang Qu
- Engineering Technology Research Center for Flame-Retardant Materials and Processing Technology of Hebei Province, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding 071002 China
| | - Jianzhong Xu
- Engineering Technology Research Center for Flame-Retardant Materials and Processing Technology of Hebei Province, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding 071002 China
| |
Collapse
|