1
|
Tang W, Zhu H, Xi W, Qiu Y, Qian L. Cage‐shaped octaphenyl silsesquioxane with micro‐nano dispersibility for strengthening intumescent flame retardancy in polypropylene composites. J Appl Polym Sci 2023. [DOI: 10.1002/app.53907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Affiliation(s)
- Wei Tang
- College of Chemistry and Materials Engineering Beijing Technology and Business University Beijing People's Republic of China
- Petroleum and Chemical Industry Engineering Laboratory of Non‐halogen Flame Retardants for Polymers Beijing People's Republic of China
- China Light Industry Engineering Technology Research Center of Advanced Flame Retardants Beijing People's Republic of China
| | - Hui Zhu
- Benecke‐Changshun Auto Trim (Zhangjiagang) Co. Ltd Zhangjiagang Jiangsu People's Republic of China
| | - Wang Xi
- College of Chemistry and Materials Engineering Beijing Technology and Business University Beijing People's Republic of China
- Petroleum and Chemical Industry Engineering Laboratory of Non‐halogen Flame Retardants for Polymers Beijing People's Republic of China
- China Light Industry Engineering Technology Research Center of Advanced Flame Retardants Beijing People's Republic of China
| | - Yong Qiu
- College of Chemistry and Materials Engineering Beijing Technology and Business University Beijing People's Republic of China
- Petroleum and Chemical Industry Engineering Laboratory of Non‐halogen Flame Retardants for Polymers Beijing People's Republic of China
- China Light Industry Engineering Technology Research Center of Advanced Flame Retardants Beijing People's Republic of China
| | - Lijun Qian
- College of Chemistry and Materials Engineering Beijing Technology and Business University Beijing People's Republic of China
- Petroleum and Chemical Industry Engineering Laboratory of Non‐halogen Flame Retardants for Polymers Beijing People's Republic of China
- China Light Industry Engineering Technology Research Center of Advanced Flame Retardants Beijing People's Republic of China
| |
Collapse
|
2
|
Wang Y, Zhang Y, Feng T, Teng A, Ren J, Piao J, Wang Y, Jiao C, Chen X. Phenolic resin microspheres surface‐modified with sodium silicate for reducing fire hazard in
TPU
composites. POLYM ADVAN TECHNOL 2023. [DOI: 10.1002/pat.6012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- Yaxuan Wang
- College of Environment and Safety Engineering Qingdao University of Science and Technology Qingdao People's Republic of China
| | - Yanli Zhang
- College of Environment and Safety Engineering Qingdao University of Science and Technology Qingdao People's Republic of China
| | - Tingting Feng
- College of Environment and Safety Engineering Qingdao University of Science and Technology Qingdao People's Republic of China
| | - Anqi Teng
- College of Environment and Safety Engineering Qingdao University of Science and Technology Qingdao People's Republic of China
| | - Jinyong Ren
- College of Environment and Safety Engineering Qingdao University of Science and Technology Qingdao People's Republic of China
| | - Junxiu Piao
- College of Environment and Safety Engineering Qingdao University of Science and Technology Qingdao People's Republic of China
| | - Yaofei Wang
- College of Environment and Safety Engineering Qingdao University of Science and Technology Qingdao People's Republic of China
| | - Chuanmei Jiao
- College of Environment and Safety Engineering Qingdao University of Science and Technology Qingdao People's Republic of China
| | - Xilei Chen
- College of Environment and Safety Engineering Qingdao University of Science and Technology Qingdao People's Republic of China
| |
Collapse
|
3
|
Yang X, Zhi M, Li Y, Xin H, Fan R, Chen X, Liu Q, He Y. Improved flame retardancy and smoke suppression properties of phenolic resin by incorporating MoO 3 particles. HIGH PERFORM POLYM 2023. [DOI: 10.1177/09540083231153336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Phenolic resin (PF) is widely used in aerospace, composite materials, and other fields. However, large amount of heat and smoke are produced during its combustion process, which is an important factor limiting its usage. To solve this problem, additive flame retardant MoO3 has been incorporated into PF for improving its flame retardancy and smoke suppression properties. Thermogravimetric analyses results show that the T5% of PF composites was gradually decreased from 264°C to 184°C and the char yield of PF-10% MoO3 is 57 wt.%, higher than that of neat PF (50 wt.%). The PF composites with 10 wt.% MoO3 passed UL-94 V-0 rating with a limiting oxygen index value of 29.8%. Meanwhile, the total heat release and total smoke production of PF-10% MoO3 are 37.60 MJ/m2 and 5.79 m2 respectively, which are reduced by 30.5% and 24.8% compared with neat PF. Only 10 wt.% MoO3 provide a 56.5% reduction (from 255 to 111) in maximal smoke density, meaning the good smoke suppression properties of MoO3. The pyrolysis products components are determined by thermogravimetric analysis combined with Fourier transform infrared spectroscopy. Furthermore, the micromorphology and chemical structure of char residue are also investigated by scanning electron microscopy, x-ray diffraction and Raman spectroscopy techniques. The promoting carbonization effect of MoO3 significantly reduces the heat release and toxic smoke production of PF composites.
Collapse
Affiliation(s)
- Xiong Yang
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
| | - Maoyong Zhi
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
- Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province, Guanghan, China
| | - Yuchuan Li
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
| | - Hui Xin
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
| | - Rong Fan
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
| | - Xiantao Chen
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
- Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province, Guanghan, China
| | - Quanyi Liu
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
- Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province, Guanghan, China
| | - Yuanhua He
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
- Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province, Guanghan, China
| |
Collapse
|
4
|
Efficient Adsorption and Extraction of Glutathione S-Transferases with Glutathione-Functionalized Graphene Oxide-Polyhedral Oligomeric Silsesquioxane Composite. Molecules 2023; 28:molecules28010340. [PMID: 36615535 PMCID: PMC9821976 DOI: 10.3390/molecules28010340] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/23/2022] [Accepted: 12/28/2022] [Indexed: 01/03/2023] Open
Abstract
Glutathione S-transferases (GSTs) are important type-II detoxification enzymes that protect DNA and proteins from damage and are often used as protein tags for the expression of fusion proteins. In the present work, octa-aminopropyl caged polyhedral oligomeric silsesquioxane (OA-POSS) was prepared via acid-catalyzed hydrolysis of 3-aminopropyltriethoxysilane and polymerized on the surface of graphene oxide (GO) through an amidation reaction. Glutathione (GSH) was then modified to GO-POSS through a Michael addition reaction to obtain a GSH-functionalized GO-POSS composite (GPG). The structure and characteristics of the as-prepared GPG composite were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), thermogravity analysis, and surface charge analysis. The specific binding interactions between glutathione and GST gave GPG favorable adsorption selectivity towards GST, and other proteins did not affect GST adsorption. The adsorption behavior of GST on the GPG composite conformed to the Langmuir isotherm model, and the adsorption capacity of GST was high up to 364.94 mg g-1 under optimal conditions. The GPG-based solid-phase adsorption process was applied to the extraction of GST from a crude enzyme solution of pig liver, and high-purity GST was obtained via SDS-PAGE identification.
Collapse
|
5
|
Thermoplastic Starch Composites Reinforced with Functionalized POSS: Fabrication, Characterization, and Evolution of Mechanical, Thermal and Biological Activities. Antibiotics (Basel) 2022; 11:antibiotics11101425. [PMID: 36290082 PMCID: PMC9598116 DOI: 10.3390/antibiotics11101425] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/09/2022] [Accepted: 10/11/2022] [Indexed: 11/16/2022] Open
Abstract
Rapid advancements in materials that offer the appropriate mechanical strength, barrier, and antimicrobial activity for food packaging are still confronted with significant challenges. In this study, a modest, environmentally friendly method was used to synthesize functionalized octakis(3-chloropropyl)octasilsesquioxane [fn-POSS] nanofiller. Composite films compared to the neat thermoplastic starch (TS) film, show improved thermal and mechanical properties. Tensile strength results improved from 7.8 MPa to 28.1 MPa (TS + 5.0 wt.% fn-POSS) with fn-POSS loading (neat TS). The barrier characteristics of TS/fn-POSS composites were increased by fn-POSS by offering penetrant molecules with a twisting pathway. Also, the rates of O2 and H2O transmission were decreased by 50.0 cc/m2/day and 48.1 g/m2/day in TS/fn-POSS composites. Based on an examination of its antimicrobial activity, the fn-POSS blended TS (TSP-5.0) film exhibits a favorable zone of inhibition against the bacterial pathogenic Staphylococcus aureus and Escherichia coli. The TS/fn-POSS (TSP-5.0) film lost 78.4% of its weight after 28 days in natural soil. New plastic materials used for packaging, especially food packaging, are typically not biodegradable, so the TS composite with 5.0 wt.% fn-POSS is therefore of definite interest. The incorporation of fn-POSS with TS composites can improve their characteristics, boost the use of nanoparticles in food packaging, and promote studies on biodegradable composites.
Collapse
|
6
|
Lyu B, Kou M, Gao D, Luo K, Ma J, Lin Y. Flame retardancy of carboxylated polyhedral oligosilsesquioxane modified layered double hydroxide in the process of leather fatliquoring. J Appl Polym Sci 2022. [DOI: 10.1002/app.52468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Bin Lyu
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and Technology Xi'an China
- Xi'an Key Laboratory of Green Chemicals and Functional Materials Shaanxi University of Science and Technology Xi'an China
| | - Mengnan Kou
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and Technology Xi'an China
- Xi'an Key Laboratory of Green Chemicals and Functional Materials Shaanxi University of Science and Technology Xi'an China
| | - Dangge Gao
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and Technology Xi'an China
- Xi'an Key Laboratory of Green Chemicals and Functional Materials Shaanxi University of Science and Technology Xi'an China
| | - Kang Luo
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and Technology Xi'an China
- Xi'an Key Laboratory of Green Chemicals and Functional Materials Shaanxi University of Science and Technology Xi'an China
| | - Jianzhong Ma
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and Technology Xi'an China
- Xi'an Key Laboratory of Green Chemicals and Functional Materials Shaanxi University of Science and Technology Xi'an China
| | - Yanjun Lin
- State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing China
| |
Collapse
|
7
|
Huang Y, Zhang H, Zhang X, Yan L, Ling Y, Zou H, Chen Y, Liang M. Effect of Mesophase Pitch Incorporation on the Ablation Behavior and Mechanism of Phenolic Composites. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00367] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yisen Huang
- State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People’s Republic of China
| | - Haoruo Zhang
- State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People’s Republic of China
| | - Xueqin Zhang
- State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People’s Republic of China
| | - Liwei Yan
- State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People’s Republic of China
| | - Youquan Ling
- State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People’s Republic of China
| | - Huawei Zou
- State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People’s Republic of China
| | - Yang Chen
- State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People’s Republic of China
| | - Mei Liang
- State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People’s Republic of China
| |
Collapse
|
8
|
Zhou Y, Hu Q, Wang W, Wang R. Controlled Architecture of Polyhedral Oligomeric Silsesquioxane-Functionalized Poly(Glycidyl Methacrylate)/Polyester Composites Using Surface-Initiated ICAR ATRP Technique for High Flame Retardancy and Smoke Suppression. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.109914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
9
|
Niu Z, Li G, Xin Y, Ma X, Zhang C, Hou X. Enhanced thermal and anti‐ablation properties of high‐temperature resistant reactive
POSS
modified boron phenolic resin. J Appl Polym Sci 2021. [DOI: 10.1002/app.52087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Zhaoqi Niu
- School of Chemistry and Chemical Engineering Northwestern Polytechnical University Xi'an China
| | - Gang Li
- School of Chemistry and Chemical Engineering Northwestern Polytechnical University Xi'an China
| | - Yi Xin
- School of Chemistry and Chemical Engineering Northwestern Polytechnical University Xi'an China
| | - Xiaoyan Ma
- School of Chemistry and Chemical Engineering Northwestern Polytechnical University Xi'an China
| | - Chengshuang Zhang
- Xi'an Aerospace Composites Research Institute, The Fourth Academy of China Aerospace Science and Technology Corporation Xi'an China
| | - Xiao Hou
- School of Chemistry and Chemical Engineering Northwestern Polytechnical University Xi'an China
- China Aerospace Science and Technology Corporation China
| |
Collapse
|
10
|
Lin X, Chen X, Zhang F, Dong Y, Chen X, Li A, Song H. Constructing 3D Interconnected Si/SiO x /C Nanorings from Polyhedral Oligomeric Silsesquioxane. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2103926. [PMID: 34651429 DOI: 10.1002/smll.202103926] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/24/2021] [Indexed: 06/13/2023]
Abstract
Polyhedral oligomeric silsesquioxane (POSS) is a family of organic/inorganic hybrid materials with specific molecular symmetry, and shows great potential in the structural design of nanomaterials. Here, a "bottom-up" strategy is designed to fabricate 3D interconnected Si/SiOx /C nanorings (NRs) via AlCl3 -assisted aluminothermic reduction using dodecaphenyl cage silsesquioxane (T12 -Ph) as the building block. In this process, AlCl3 acts as both a liquid medium for reduction, and significantly as the catalyst to the cross-linking of phenyl groups in T12 -Ph. The obtained Si/SiOx /C NRs exhibits uniform diameter of ≈165 nm and well distribution of C and Si elements. The unique ring-like structure of Si/SiOx /C NRs makes it have great application potential in the field of lithium ion batteries. Notably, Si/SiOx /C NRs exhibits superior high-rate capacity and good cycle stability when used as anode for LIBs. More excitingly, Si/SiOx /C NRs can deliver a high reversible capacity of 517.9 mA h g-1 at ultra-low temperature of -70 °C, and the capacity retention as high as ≈50% of that at 25 °C. This work not only broadens structural design of carbon-based nanomaterials but also provides more possibilities for the application of POSS.
Collapse
Affiliation(s)
- Xieji Lin
- Country State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, No. 15 North Third Ring Road East, Chaoyang District, Beijing, 100029, P. R. China
| | - Xinjian Chen
- College of Chemical Engineering, Beijing University of Chemical Technology, No. 15 North Third Ring Road East, Chaoyang District, Beijing, 100029, P. R. China
| | - Fan Zhang
- College of Chemical Engineering, Beijing University of Chemical Technology, No. 15 North Third Ring Road East, Chaoyang District, Beijing, 100029, P. R. China
| | - Yue Dong
- Country State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, No. 15 North Third Ring Road East, Chaoyang District, Beijing, 100029, P. R. China
| | - Xiaohong Chen
- Country State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, No. 15 North Third Ring Road East, Chaoyang District, Beijing, 100029, P. R. China
| | - Ang Li
- Country State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, No. 15 North Third Ring Road East, Chaoyang District, Beijing, 100029, P. R. China
| | - Huaihe Song
- Country State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, No. 15 North Third Ring Road East, Chaoyang District, Beijing, 100029, P. R. China
| |
Collapse
|
11
|
Wang D, Ding J, Wang B, Zhuang Y, Huang Z. Synthesis and Thermal Degradation Study of Polyhedral Oligomeric Silsesquioxane (POSS) Modified Phenolic Resin. Polymers (Basel) 2021; 13:polym13081182. [PMID: 33916970 PMCID: PMC8067618 DOI: 10.3390/polym13081182] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 01/13/2021] [Accepted: 01/20/2021] [Indexed: 01/16/2023] Open
Abstract
In this paper, a new polyhedral oligomeric silsesquioxane containing a phenol group (POSS-Phenol) is prepared through the Michael addition reaction, which is added to the synthesis of phenolic resin as a functional monomer. Infrared spectroscopy (IR) is used to demonstrate the chemistry structure of the synthesized POSS modified phenolic resin. After introducing POSS into the resole, a comprehensive study is conducted to reveal the effects of POSS on the thermal degradation of phenolic resin. First, thermal degradation behaviors of neat phenolic resin and modified phenolic resin are carried out by thermogravimetric analysis (TGA). Then, the gas volatiles from thermal degradation are investigated by thermogravimetric mass spectrometry (TG-MS). Finally, the residues after thermal degradation are characterized by X-ray diffraction (XRD). The research indicates that POSS modified phenolic resin shows a better thermal stability than neat phenolic resin, especially at high temperatures under air atmosphere. On the one hand, the introduction of the POSS group can effectively improve the release temperature of oxygen containing volatiles. On the other hand, the POSS group forms silica at high temperatures under air, which can effectively inhibit the thermal oxidation of phenolic resin and make phenolic resin show a better high-temperature oxidation resistance.
Collapse
Affiliation(s)
- Degang Wang
- College of Aerospace Science and Engineering, National University of Defense Technology, 109 Deya Road, Changsha 410073, China; or
| | - Jie Ding
- School of Materials Science and Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China; (B.W.); (Y.Z.); (Z.H.)
- Correspondence:
| | - Bing Wang
- School of Materials Science and Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China; (B.W.); (Y.Z.); (Z.H.)
| | - Yingluo Zhuang
- School of Materials Science and Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China; (B.W.); (Y.Z.); (Z.H.)
| | - Zhixiong Huang
- School of Materials Science and Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China; (B.W.); (Y.Z.); (Z.H.)
| |
Collapse
|
12
|
Ji Y, Xia Q, Cui J, Zhu M, Ma Y, Wang Y, Gan L, Han S. High pressure laminates reinforced with electrospun cellulose acetate nanofibers. Carbohydr Polym 2021; 254:117461. [PMID: 33357920 DOI: 10.1016/j.carbpol.2020.117461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 11/10/2020] [Accepted: 11/27/2020] [Indexed: 01/16/2023]
Abstract
In the work, the non-woven cellulose acetate (CA) nanofiber mats were prepared via electrospinning, and CA nanofiber were incorporated into the core layer of the high-pressure laminates (HPLs). When the concentration of CA was 16 wt%, SEM images demonstrated that the morphology of the CA nanofiber mat was the best, with an average diameter of 654±246 nm. When CA nanofiber mats were incorporated into the core layer of HPLs, the mechanical properties of the resulted HPLs composites were significantly improved. Specifically, the tensile strength and elongation at break of the nanofiber mats reinforced HPLs composites increased remarkably to 40.8 ±1.1 MPa and 27.9 ± 0.9 %, respectively, which were nearly 6 times and 4.4 times higher than those of the pure HPLs. Furthermore, the incorporation of the CA nanofiber mats also significantly improved the flame retardancy of the HPLs, which was revealed from the thermogravimetric analysis (TGA) results.
Collapse
Affiliation(s)
- Yujie Ji
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Qi Xia
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Juqing Cui
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Minghao Zhu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Yufeng Ma
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Yutong Wang
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Lu Gan
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Shuguang Han
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| |
Collapse
|
13
|
Zhao H, Xie D, Zhang S, Du F. Study on improving the high-temperature oxidation resistance of pyrolytic carbons of phenolic resin binder by in-situ formation of carbon nanotubes. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104772] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Zhang C, Zhang J, Xu T, Sima H, Hou J. Effects of Polyhedral Oligomeric Silsesquioxane (POSS) on Thermal and Mechanical Properties of Polysiloxane Foam. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4570. [PMID: 33066577 PMCID: PMC7602122 DOI: 10.3390/ma13204570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/02/2020] [Accepted: 10/05/2020] [Indexed: 01/04/2023]
Abstract
The thermal and mechanical properties of polysiloxane foam are greatly improved by the addition of acrylolsobutyl polyhedral oligomeric silsesquioxane (MA0701, hereinafter referred to as MAPOSS), which has double bonds. The morphologies and properties of the polysiloxane composite foam were characterized. The average cell diameter of the composite foams decreased, while the cell density increased with increasing MAPOSS. Meanwhile, MAPOSS can enhance thermal conductivity and thermal stability. Thermal conductivity increased by 25%, and the temperature at the maximum weight loss rate increased from 556 °C to 599 °C. In addition, MAPOSS also promoted heterogeneous nucleation by functioning as a nucleating agent, which can increase cell density to improve the mechanical properties. The compressive strength of the composite foam increased by 170% compared with that of pure foam. In the composite, MAPOSS increased the cross-linking density by acting as a physical cross-linking point and limited the movement of the segments.
Collapse
Affiliation(s)
| | | | | | | | - Jiazi Hou
- School of Materials Science and Engineering, Jilin University, Chang Chun 130022, China; (C.Z.); (J.Z.); (T.X.); (H.S.)
| |
Collapse
|