JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Mengnan Xu,Zhiyuan Zhang,Jiajun Tao,Yan Nai,Chenglong Su,Shan Jiang
In this paper, the rare earth europium complex Eu(FTFA) 3 TPPO 2 (EuFT) was synthesized by using europium as the central ion, 4-trifluoro-1-(2-furanyl)-1,3-butanedione (FTFA) as the first ligand, and triphenylphosphine oxide (TPPO) as the second ligand. The structure was characterized by Fourier transform infrared spectroscopy (FTIR), and the photoluminescence process was investigated by UV and fluorescence spectra. The luminescent film was prepared by adding EuFT and the compatibilizer POE- g -PHEMA into the POE matrix, which can convert the UV light to the red light, and improve the photovoltaic conversion efficiency while reducing the effect of UV aging on the cell. Experimental results show that the complex can absorb UV light (200–400 nm) and emit red light (612 nm), the luminescent film also maintains good luminescence performance. The peel strength of POE/POE- g -PHEMA/EuFT film achieves 23.9 N cm −1 ，while that of POE film is 12.8 N cm −1 . The silicon cell prepared by POE/POE- g -PHEMA/EuFT film also showed higher EQE in UV region, and its current density–voltage (J–V) curve revealed that J sc increased from 33.05 to 34.25 mA/cm 2 , the conversion efficiency increased from 12.99% to 13.39%, and the relative efficiency increased by 3.08%. The rare earth europium complex effectively improved the photoelectric conversion efficiency of solar cells.
研究领域:
材料科学
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光伏技术
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELASTOMERS AND PLASTICS
·
2021
·
IF 1.833
Mingchao Li,Yi Wang,Chunhui Shen,Shanjun Gao
Flame retardant thermoplastic elastomer (TPE) with excellent mechanical properties and thermal oxidative aging resistance was prepared by dynamic vulcanization technology with ethylene-octene copolymer (POE) and polypropylene (PP) as raw materials. The paper first discussed the effect of the amount of vulcanizing agent on the properties of PP/POE TPE. Based on the study of tensile strength, elongation at break, cross-section morphology, processability and aging properties of TPE, it was found that the TPE prepared with 0.6 phr of bis(1-(tert-butylperoxy)-1-methylethyl)-benzene (BIPB) and 40/60 of PP/POE had the best properties. Then silicone powder (GM) is added to the traditional low-halogen bromine-phosphorus flame retardant system for flame retardant modification. The results show that the addition of GM can effectively enhance the stability of the carbon layer, prevent the material from dripping during combustion, and increase the residual carbon content of TPE at 800°C. When 3 phr of GM is combined with a bromine-phosphorus system. The comprehensive performance is the best, the limiting oxygen index (LOI) of TPE increased to 29.8%, reaching the V-0 level. At the same time, the processing fluidity and aging resistance of TPE materials have also been improved.
研究领域:
材料科学
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高分子化学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 137
·期 40
·49206
·
IF 2.52
Guodian Zhu,Di Xiong,Jiao Ding,Tao Ruan,Guoqiang Yin
Flow mark phenomenon is one of the typical and common surface defects that affect industrial desired surface and long-life mechanical properties of the injection molding of polypropylene (PP). The effect of in-situ grafted polyolefin elastomer (POE) on the flow marks on injection molding of PP was investigated by combining experimental methods with dissipative particle dynamics (DPD) simulations. It was found that 1,6-hexanediol diacrylate-grafted POE (POE- g -HD) facilitated the reduction of the flow marks under an optimized grafting condition, a screw speed of 250 rpm at 185°C. The DPD simulations indicated that the reduction of the flow marks via POE- g -HD was related to the emergence of POE- g -HD quasi-clusters. In addition, increasing melt strength of PP resulted in a melt fracture phenomenon and an increase of the flow marks. The limiting grafting degree of POE led to a finite reduction of the flow marks.
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2024
·Vol. 45
·期 16
·2400228
·
IF 4.2
Zeshang Jiang,Zhongtian Li,Jieting Geng,Lin Xia
To enhance the low-temperature toughness and resistance of the engineering plastic polyamide PA12, this study introduces novel PA12/MVQ@POE- g -MAH ternary composites using a two-step process and dynamic curing. Analytical results indicate that incorporating MVQ@POE- g -MAH into the PA12 matrix markedly enhances its toughness and heat resistance. As the MVQ@POE-g-MAH content increases, the elongation at break of PA12 composites significantly expands from 52.83% to 204.69%, and the notch impact strength escalates from 8.69 to 74.34 kJ m −2 . In addition, the brittleness temperature of PA12 decreases from −59.5 to −67.0 °C. Experimental findings confirm that POE- g -MAH is dispersed at the interface between MVQ and PA12, creating an encapsulated structure of MVQ@POE- g -MAH. This enhancement significantly broadens the potential applications of PA12 by improving its toughness, and resistance to both low and high temperatures, as well as impact endurance.
研究领域:
材料科学
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高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Yuqi Wang,Wei Zhao,Mingpu Li,Qing Zhuo,Yuanyuan Li,Linli Tan,Yingru Li,Hangyu Dong,Qiong Long
Utilizing foam-structured composite materials for electromagnetic shielding offers several advantages, including lightweight properties, low filler load, and a high absorption coefficient. However, their application in electromagnetic shielding is often limited by relatively lower mechanical performance. This study employed melt blending and chemical foaming processes to fabricate a lightweight EPDM/POE/KB composite foam with favorable mechanical characteristics, heat resistance, and electromagnetic absorbing performance. Significantly, the foam, with a density of 0.195 g/cm³, demonstrates an absorption-dominated shielding mechanism (absorption coefficient of 0.71) and good electromagnetic shielding performance of 20.57 dB in the X-band. The honeycomb structure formed within the material contributes to the multiple reflections of electromagnetic waves. Additionally, the composite foam exhibits excellent flexibility, with a fracture elongation greater than 150 %, alongside tensile and compressive strengths of 1.46 MPa and 0.92 MPa, respectively, demonstrating satisfactory mechanical performance. Furthermore, the composite foam also possesses good thermal stability. The study provides a low-cost and effective method for preparing lightweight, high-absorption coefficient, and excellent mechanical performance electromagnetic shielding foam.
研究领域:
材料科学
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电磁学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER SCIENCE
·
2020
·Vol. 58
·期 6
·903-913
·
IF 0
Haicun Yang,Zinan Cai,Haotian Liu,Zheng Cao,Yanping Xia,Wenzhong Ma,Fanghong Gong,Guoliang Tao,Chunlin Liu
In this work, the compatibilization effects of hybrid maleated POE/attapulgite hybrid compatibilizer (M-POE/ATP) on the immiscible polypropylene/poly(glycolic acid) (PP/PGA) blends was investigated. The hybrid compatibilizer integrating strengthening, toughening and compatibilization functions was prepared via one-step reactive extrusion using peroxidated ATP as the initiator. Then, the effects of compatibilizer dosage on the mechanical, thermal, rheological and morphological characteristics of blends were evaluated in detail. It was found that the hybrid compatibilizer resulted in the significantly enhanced compatibility and mechanical performance. Increased amount of compatibilizer content fractionated and almost wholly suppressed the crystallization process of PGA. The compatibilized blends showed higher thermal stability than pure PGA, and lower storage modulus and complex viscosity at higher shearing frequency. PGA in the blends presented a much lower degradation rate, which lead to the higher strength retention of 81% for the blend with 4 wt% of compatibilizer in buffer solution after 35 days. Graphical The maleated POE/attapulgite (M-POE/ATP) hybrid compatibilizer was prepared via one-step reactive extrusion using peroxidated ATP as the initiator to compatilize the immiscible polypropylene/poly(glycolic acid) (PP/PGA) blends. The effective integration of strengthening, toughening, and compatibilization functions for this compatibilizer was confirmed by the enhanced mechanical performance, improved compatibility and the transform of fractured surface morphology of blends in the presence of M-POE/ATP.
研究领域:
材料科学
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高分子化学
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产品关联
DOI
Polymer-Plastics Technology and Materials
·
2020
·
IF 0
Yang Pan,Guangfeng Wu,Huifang Ma,Shujie Zhou,Huixuan Zhang
Herein, graft-modified ethylene-1-octene copolymer (POE-g-GMA) and styrene-butadiene-styrene triblock copolymer (SBS-g-GMA) were found to be excellent reactive compatibilizers for immiscible poly(ethylene terephthalate) (PET)/high-density polyethylene (HDPE) blends via in-situ reaction compatibilization. With increase in compatibilizer amount, uniform phase morphology was observed in all the blends. Thus, exhibiting enhanced mechanical properties, especially, the notched Izod impact strength. In comparison with SBS-g-GMA, compatibilizer POE-g-GMA demonstrated greater impact on the compatibility. The addition of 15% POE-g-GMA produced blends with best mechanical properties. Besides, both POE-g-GMA and SBS-g-GMA enhanced the melt viscosity of PET/HDPE blends.
研究领域:
材料科学
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聚合物工程
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产品关联
DOI
Materials Research Express
·
2019
·Vol. 6
·期 11
·115345
·
IF 1.449
Suwei Wang,Ping Xue,Mingyin Jia,Ke Chen
The foamed wood-polymer composites with polypropylene (PP) and polyolefin elastomer (POE) blends as matrix were prepared by a co-rotating twin-screw extruder and a single-screw extruder foaming system in this paper. To improve the dispersion uniformity of materials in the samples, a cavity transfer mixer was introduced to the single-screw extruder foaming system. Besides, the effects of both the nucleating agent and the coupling agent on the melt flowability, cell morphology and mechanical properties of the samples were investigated. The nanoparticles were also added to study the effect of nano-nucleating agent on the properties of the foamed samples. The experimental results show that the addition of talc and maleic anhydride grafted polypropylene (MAH-g-PP) resulted in the decrease of the melt flow rate and the increase of the Vicat softening temperature. But the addition of nanoparticles improved the melt flowability and reduced the softening temperature of the samples. Compared with talc, the addition of nanoparticles increased the impact strength of the samples by 6%. Moreover, the minimum cell size and the maximum cell density were obtained with the value of 62 μm and 2.8 × 104 cells cm−3, when the content of both talc and MAH-g-PP were 10 phr. Affected by the cell morphology, the maximum impact strength, tensile strength and flexural strength of the samples were also obtained with the value of 6.6 kJ m−2, 8.3 MPa and 22.6 MPa.
研究领域:
材料科学
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高分子化学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER BULLETIN
·
2019
·Vol. 76
·期 12
·6413-6428
·
IF 1.858
Peng Hui,Lu Min,Lv Fucheng,Niu Mingjun,Wang Wanjie
The effect of silane crosslinking reaction on properties and structure of polypropylene (PP)/ethylene–octene elastomer (POE) blends had been carried out. FTIR and gel content tests confirmed the grafting and crosslinking reaction mechanism of PP/POE blends. The incorporation of POE phase enhanced the crosslinking degree and thermal stability of blends. Crystallinity of silane-crosslinked PP/POE blends decreased sharply, and the melting points change a little with the POE content increasing. The rheological curves of silane-crosslinked PP/POE blends showed an obvious “gel point”, corresponding to the dynamic crosslinking network. Solvent resistance tests suggested crosslinking had a great improvement of solvent resistance. The blends with 30% POE had good comprehensive mechanical properties. Scanning electron microscopy images exhibited that crosslinking had a great influence on the morphologies of silane-crosslinked PP/POE blends. Characterization results indicated the “gel point” acquired from rheology had some corresponding relationship with mechanical properties and solvent resistance.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Ruijun Zhang,Qiqi He,Junhua Li,Jianhua Qian
Thermoplastic vulcanizates (TPVs) are attracting growing interest for their recyclability, low cost, and ease of processing. While polypropylene-based TPVs are well studied and partly commercialized, polyethylene-based systems remain underexplored. Polypropylene tends to degrade during dynamic vulcanization due to its tertiary carbon atoms, requiring stabilizers and complicating processing. In contrast, polyethylene offers better thermal stability and simpler processing, making it a promising alternative for developing cost-effective and high-performance TPVs. In this study, a series of TPVs based on polyolefin elastomer (POE) and high-density polyethylene (HDPE) were prepared via dynamic vulcanization using 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane (DBPH) as a crosslinking agent under optimized conditions. The effects of varying rubber-to-plastic ratios on the mechanical, rheological, and thermal properties were systematically investigated. As the POE content increased, torque and gel content rose, while melting/crystallization temperatures and crystallinity decreased. At a rubber-to-plastic ratio of 80:20, the TPV exhibited the best overall performance, with a tensile strength of 4.8 MPa, elongation at break of 282%, and hysteresis loss of 55%. Rheological measurements revealed strong crosslinked networks and good processability under shear. This study demonstrates the significant influence of rubber-to-plastic ratio on TPV properties and offers a practical route to developing high-performance, polyethylene-based thermoplastic elastomers.
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DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2026
·
IF 3.6
Jiaqi Guo,Qiuyue Wang,Yanxia Cao,Yanyu Yang,Jianfeng Wang,Wanjie Wang
Polyamide 1012 (PA1012) composites with balanced strength and toughness were fabricated by blending with lanthanum-neutralized polyolefin elastomer (POE) ionomers and nano-alumina grafted with nylon short chains (Al 2 O 3 -PA). Al 2 O 3 -PA was synthesized based on in situ polymerization, while POE ionomers with different glutamic acid/maleic anhydride mole ratios were prepared through melt-blending. The multiple interactions between La 3+ -carboxyl/amide groups and dynamic networks formed by chain entanglement of Al 2 O 3 -PA with PA1012 and POE ionomers significantly improved PA1012's mechanical properties. Compared with pure PA1012, the impact toughness (92.0 kJ/m 2 ) of PA1012/POE ionomer/Al 2 O 3 -PA composites was 14 times higher while the tensile strength (53.4 MPa) retained 86.1% of its value. Rheological characterization showed decreased melt viscosity, helping with processing challenges in rubber-toughened plastics. The toughening mechanism was attributed to matrix yielding, elastomer particle deformation, and dynamic network destruction. This work provides an efficient strategy for designing high-performance polyamide composites with balanced mechanical properties and enlarging their applications in automotive, electronics and military fields. Highlights Preparation of POE ionomer and Al 2 O 3 -PA. Investigating synergistic interactions of POE ionomer with Al 2 O 3 -PA. Enhanced improvement in mechanical performance of PA1012 composites. Exhibiting a dynamic network based on rheological measurements.
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产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 5
·e70202
·
IF 3.4
Chaoxin Wang,Qi Wang,Yongliang Wang,Peigang He,Zhidong Han
The developing trends of electrical and electronic devices in high-power operation, densified installation, and structural miniaturization challenge the application of the composites with efficient thermal conductivity. In view of the manufacture technology of polyolefin materials, the melt-processing strategy was designed to prepare the thermally conductive composites based on polypropylene/polyolefin elastomer (PP/POE) blend with hexagonal boron nitride (hBN) and alumina oxide (Al 2 O 3 ). By filling hBN and Al 2 O 3 separately into the co-continuous PP/POE blend, the selectively distributed structure with hBN in the PP phase and Al 2 O 3 in the POE phase was revealed, and the thermal conductivity of the composites was improved with selective filler distribution. The processing scheme exerted distinct influences on the distribution structure and the thermal conductivity of the composites with the same filler content. A superior thermal conductivity of 0.80 W/(m K) was achieved with the individually distributed structure of BN and Al 2 O 3 together with the bridged interaction between PP/BN and POE/Al 2 O 3 phases. The reduction in interfacial thermal resistance contributed to the enhanced thermal conductivity according to the simulation with finite element analysis (FEA). The proposed strategy provides an efficient way to mass manufacture thermally conductive polypropylene composites.
研究领域:
材料科学
·
高分子材料工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）