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Wang B, Qi Z, Chen X, Sun C, Yao W, Zheng H, Liu M, Li W, Qin A, Tan H, Zhang Y. Preparation and mechanism of lightweight wood fiber/poly(lactic acid) composites. Int J Biol Macromol 2022; 217:792-802. [PMID: 35902018 DOI: 10.1016/j.ijbiomac.2022.07.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/27/2022] [Accepted: 07/13/2022] [Indexed: 11/26/2022]
Abstract
The high density and poor thermal insulation of traditional wood-plastic composites limited the application in the field of building materials. In this paper, wood fiber (WF) and PLA were used as raw materials and azodicarbonamide was used as the foaming agent. Lightweight WF/PLA composites were prepared by the hot-pressing foaming method, aiming to obtain renewable, low-density material with high strength-to-weight ratio and thermal insulation performance. The results showed that after adding 20 % WF into PLA, the cell morphology was excellent and the cell size was uniform. The magnification reached the minimum value of 0.36 g/cm3 and the foaming magnification was 3.42 times. The impact strength and compressive strength were 3.16 kJ/m3 and 4.12 MPa, its comprehensive mechanical properties were outstanding. The thermal conductivity of foamed materials was 0.110-0.148 (W/m·K), which was significantly lower than that of unfoamed materials and common wood. Its excellent mechanical properties and thermal insulation can be suitable for application in the construction field to replace traditional wood.
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Affiliation(s)
- Baiwang Wang
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Zhongyu Qi
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Xiaojian Chen
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Ce Sun
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Wenrui Yao
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Hao Zheng
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Mengyao Liu
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Wenlong Li
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Aihang Qin
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Haiyan Tan
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Yanhua Zhang
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China.
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Guo Z, Xu R, Xue P. Study on Preparation of Ultra-High-Molecular-Weight Polyethylene Pipe of Good Thermal-Mechanical Properties Modified with Organo-Montmorillonite by Screw Extrusion. MATERIALS 2020; 13:ma13153342. [PMID: 32727121 PMCID: PMC7435758 DOI: 10.3390/ma13153342] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 11/16/2022]
Abstract
The study of processing characteristic and property optimization of ultra-high-molecular-weight polyethylene (UHMWPE) pipe is increasingly performed, mainly focusing on difficulties in the melting process and poor thermal-mechanical properties after forming, which have limited the wider engineering application of UHMWPE pipe. In this study, organo-montmorillonite (OMMT)-modified UHMWPE pipe with good thermal-mechanical properties was prepared by screw extrusion molding. First, high-density polyethylene was subjected to fluidity modification so that the screw extrusion molding of UHMWPE pipe was feasible. Then, OMMT-modified UHMWPE pipes under different addition amounts of OMMT were innovatively prepared by extrusion. Furthermore, the effects of the addition amounts of the compatibilizer HDPE-g-MAH and the silane coupling agent γ-(2,3-epoxy propoxy) propyl trimethoxy silane (KH560) on the thermal properties of OMMT-modified UHMWPE pipe were investigated for the first time. Compared with those of pure UHMWPE pipe, the Vicat softening temperature (from 128 to 135.2 °C), thermal deformation temperature (from 84.4 to 133.1 °C), bending strength (from 27.3 to 39.8 MPa), and tensile strength (from 20.8 to 25.1 MPa) of OMMT-modified UHMWPE pipe were greatly increased. OMMT-modified UHMWPE pipe with good thermal-mechanical properties was able to be prepared by extrusion for the first time. The compatibilizer method of HDPE-g-MAH was slightly more effective than the coupling agent method of KH560.
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Affiliation(s)
- Zhouchao Guo
- School of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Rui Xu
- School of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ping Xue
- School of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Zhou X, Li Y, Li J, Wang Y, Liu C, Wang L, Li S, Song Y. Preparation and characterization of polybenzoxazine foam with flame retardancy. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.5034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Xiumiao Zhou
- School of Chemical Engineering and Food Science Zhengzhou University of Technology Zhengzhou China
| | - Yuanyuan Li
- School of Chemical Engineering and Food Science Zhengzhou University of Technology Zhengzhou China
| | - Jingjing Li
- School of Chemical Engineering and Food Science Zhengzhou University of Technology Zhengzhou China
| | - Yufei Wang
- School of Chemical Engineering and Food Science Zhengzhou University of Technology Zhengzhou China
| | - Chao Liu
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences Shanghai China
| | - Lei Wang
- School of Chemical Engineering and Food Science Zhengzhou University of Technology Zhengzhou China
| | - Shiyang Li
- School of Chemical Engineering and Food Science Zhengzhou University of Technology Zhengzhou China
| | - Yangyang Song
- School of Chemical Engineering and Food Science Zhengzhou University of Technology Zhengzhou China
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Yan Y, Iqbal A, Wu C, Wang Y, Li G, Qi R. Electrical conductivity of carbon black/single‐wall carbon nanotube/low‐density polyethylene ternary composite foam. J Appl Polym Sci 2020. [DOI: 10.1002/app.48382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yongsi Yan
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 China
| | - Asma Iqbal
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 China
| | - Chun Wu
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 China
| | - Yucheng Wang
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 China
| | - Guan Li
- Graduate School of Frontier Sciences The University of Tokyo, 5‐1‐5 Kashiwanoha Kashiwa‐shi Chiba 277‐8561 Japan
| | - Rongrong Qi
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 China
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Yin X, Yin Y, Cheng D, Feng Y, Zhang G, Wen J. In-Situ Bubble Stretching Assisted Melt Extrusion for the Preparation of HDPE/UHMWPE/CF Composites. Polymers (Basel) 2019; 11:polym11122054. [PMID: 31835658 PMCID: PMC6960775 DOI: 10.3390/polym11122054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/06/2019] [Accepted: 12/08/2019] [Indexed: 11/16/2022] Open
Abstract
In this work, a novel melt extrusion method under synergy of extensional deformation and in-situ bubble stretching (ISBS) and corresponding apparatus were reported. The structure and working principle were introduced in detail. Polymer composites composed of high density polyethylene (HDPE)/ultrahigh molecular weight polyethylene (UHMWPE)/carbon fiber (CF) were prepared by using this new method. Effects of CF and Azodicarbonamide (AC) contents on composites' morphology, rheological, thermal, and mechanical properties were experimentally investigated. SEM results showed that the CFs dispersed evenly in the matrix when the AC content was relatively high. DSC results showed that co-crystallization of HDPE and UHMWPE occurred in the composites, and the Xc of the composites decreased with the addition of AC or under high CF loadings. TGA results showed that the thermostability of the composites increased markedly with increasing CF loading. Mechanical properties showed that tensile strength increased by 30% with 9 wt % CF and 0.6 wt % AC added. The results aforementioned indicate that the novel melt extrusion method is a green and effective way to prepare HDPE/UHMWPE/CF composites.
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Affiliation(s)
- Xiaochun Yin
- Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou 510640, China; (X.Y.); (Y.Y.); (D.C.); (J.W.)
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, South China University of Technology Guangzhou, Guangzhou 510640, China
| | - Youhua Yin
- Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou 510640, China; (X.Y.); (Y.Y.); (D.C.); (J.W.)
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, South China University of Technology Guangzhou, Guangzhou 510640, China
| | - Di Cheng
- Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou 510640, China; (X.Y.); (Y.Y.); (D.C.); (J.W.)
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, South China University of Technology Guangzhou, Guangzhou 510640, China
| | - Yanhong Feng
- Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou 510640, China; (X.Y.); (Y.Y.); (D.C.); (J.W.)
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, South China University of Technology Guangzhou, Guangzhou 510640, China
- Correspondence: (F.Y.); (Z.G.)
| | - Guizhen Zhang
- Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou 510640, China; (X.Y.); (Y.Y.); (D.C.); (J.W.)
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, South China University of Technology Guangzhou, Guangzhou 510640, China
- Correspondence: (F.Y.); (Z.G.)
| | - Jinsong Wen
- Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou 510640, China; (X.Y.); (Y.Y.); (D.C.); (J.W.)
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, South China University of Technology Guangzhou, Guangzhou 510640, China
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Xie L, Liang X, Huang H, Yang L, Zhang F, Li X, Luo Z. Preparation and properties of long chain branched high-density polyethylene based on nano-SiO 2 grafted glycidyl methacrylate. RSC Adv 2019; 9:1123-1133. [PMID: 35517616 PMCID: PMC9059535 DOI: 10.1039/c8ra08061e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 12/17/2018] [Indexed: 12/28/2022] Open
Abstract
A compounded nanoparticle with multiple double bonds (C
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C) was prepared by grafting glycidyl methacrylate (GMA) onto the surface of nano-SiO2. Then gel-free long chain branched polyethylene (LCBPE) was prepared by melt branching reaction in a Haake torque rheometer in the presence of initiator peroxide and GMA grafted nano-SiO2 (SiO2-g-GMA). The sampling time corresponded to the summit of the reaction peak in the torque curve. Fourier transform infrared results indicated that SiO2-g-GMA had been grafted onto the HDPE backbone via radical reaction. The reaction mechanism and the topological structure of the PE products are also discussed. Rheological results showed that the relaxation time and molecular weight distribution of modified PE were increased owing to the introduction of LCB structure, and the more SiO2-g-GMA was added, the more apparent variation could be observed. Compared with linear HDPE, both the melt strength and mechanical properties of LCBPE were improved obviously. From the differential scanning calorimetry and polarized optical microscopy results, smaller crystal size and lower growth rate were observed compared with linear HDPE, which are ascribed to the nucleation and restriction of long branching chains in the system. Well distributed nano-SiO2 without any agglomeration in the PE matrix was observed in the scanning electron microscope images when the SiO2-g-GMA content was less than 3 phr. A compounded nanoparticle with multiple double bonds (CC) was prepared by grafting glycidyl methacrylate (GMA) onto the surface of nano-SiO2.![]()
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Affiliation(s)
- Lijin Xie
- College of Materials & Metallurgy, Guizhou University Guiyang 550025 People's Republic of China
| | - Xiaokun Liang
- College of Materials & Metallurgy, Guizhou University Guiyang 550025 People's Republic of China
| | - Hongwei Huang
- College of Materials & Metallurgy, Guizhou University Guiyang 550025 People's Republic of China
| | - Le Yang
- College of Materials & Metallurgy, Guizhou University Guiyang 550025 People's Republic of China
| | - Feng Zhang
- College of Materials & Metallurgy, Guizhou University Guiyang 550025 People's Republic of China
| | - Xiaolong Li
- College of Materials & Metallurgy, Guizhou University Guiyang 550025 People's Republic of China
| | - Zhu Luo
- College of Materials & Metallurgy, Guizhou University Guiyang 550025 People's Republic of China
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