Run Zhang

Beijing University of Chemical Technology

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Ping Xue

Beijing University of Chemical Technology

Mingyin Jia

Zhejiang University

Qun Yang

Shanghai University of Engineering Science

Jing Tian

Ningxia University

Xiaonong Chen

Beijing University of Chemical Technology

Ke Chen

Beijing University of Chemical Technology

Mingfei Liu

Beijing University of Chemical Technology

Ping Xue

Beijing University of Chemical Technology

Chenchao Fu

Beijing University of Chemical Technology

Yanze Liu

Beijing University of Chemical Technology

Cooperative Institutions

Beijing University of Chemical Technology

Tsinghua University

Peking University

State Key Laboratory of Chemical Engineering

South China University of Technology

Huazhong University of Science and Technology

Shandong University

Xi'an Jiaotong University

Chinese Academy of Sciences

Guangdong Provincial People's Hospital

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Fabrication of Flame Retardant PA6/Three-Dimensional Braided Glass Fiber Composites via in-situ Polymerization

Functional Materials Letters (2024)

Run Zhang Jiaming Wang Mingyin Jia Bianying Wen

Reaction injection molding method is employed to improve flame retardancy and mechanical properties of three-dimensional braided glass fiber (3D-braided-GF) reinforced in situ polymerized polyamide 6 (PA6) composites. The kernel lies in adding flame retardants, hexaphenoxycyclotriphosphazene (HPCTP), to the reactive monomers to allow it to be in situ filled into composites during preparing PA6 through anionic polymerization, which enables flame retardants to achieve better dispersion. In addition, extremely low-viscosity reactive monomers are easier to immerse in 3D-braided-GF, ameliorating interfacial adhesion between GF and PA6. The preliminary research indicates that samples with 10 wt.% HPCTP concentration can achieve the best mechanical properties and a satisfied flame-retardant grade (UL 94 HB). However, with the incorporation of 15 wt.% HPCTP into samples, the optimum flame-retardant grade (UL 94 V2) and the reduced mechanical performance are obtained. Furthermore, a dual flame retardancy mechanism in both gaseous and condensed phases of samples is further elucidated. This study can provide a reference for scenarios with high requirements for the flame-retardant and mechanical properties, such as high-speed rail and aircraft.

In situ polymerization

10.1142/s1793604724500188

Cite

Citations (0)

Polymer chain conformations in hybrid composites of UHMWPE incorporated by GNP/MWCNT

Journal of Polymer Research (2023)

Chenchao Fu Run Zhang Jing Tian Qun Yang Ping Xue

Ultra-high-molecular-weight polyethylene

Nanomaterials

10.1007/s10965-023-03629-2

Cite

Citations (7)

Thermal actuation shape memory of ultra-high-molecular-weight polyethylene (UHMWPE) with molecular orientation

Materials Letters (2022)

Run Zhang Qun Yang Mingfei Liu Xiaonong Chen Ping Xue

Ultra-high-molecular-weight polyethylene

10.1016/j.matlet.2022.132813

Cite

Citations (8)

Thermal Softening and Degradation of UHMWPE Composites: Effect of Melting Process

Journal of Applied Polymer Science (2025)

Run Zhang Kaijun Niu Jing Tian Mingfei Liu Zetian Hua

ABSTRACT This study investigates the effect of gradual melting process for crystallization zone on the thermal softening and degradation properties of ultra‐high molecular weight polyethylene (UHMWPE) composites. The results of the differential scanning calorimetry test indicate that UHMWPE composites exhibit an initial melting endotherm at low temperatures. UHMWPE composites show significant differences in storage and loss modulus at room temperature, but both values decline sharply with increasing temperature. The data reveals that the discrepancy in temperature values at a specified melting percentage is negligible (≤ 4°C). Thus, thermal softening is more significantly influenced by percentage of crystalline melting than by crystallinity. Most samples' vicat softening temperature (VST) values align with the melted temperature of about 50% crystalline regions. Furthermore, the VST curves show a notable displacement increase at 120°C, corresponding to a melting percentage of about 20%. The heat deflection temperature (HDT) values for UHMWPE composites range from 61°C to 67°C, aligning with the initial melting temperature with no significant variation. Moreover, the melting of crystalline regions does not influence thermal degradation, due to the significant gap between melt and degradation temperatures. This study reveals new understanding of thermal softening and degradation in semicrystalline composites.

Degradation

10.1002/app.56688

Cite

Citations (1)

Research on the performance of three-dimensional-braided-glass fiber reinforced in-situ polymerized TPU

Journal of Thermoplastic Composite Materials (2024)

Lin Jiang Run Zhang Ping Xue Mingyin Jia Jianchen Cai

In this study, thermoplastic polyurethane (TPU) is prepared by using 4,4′-methylenediphenyl diisocyanate (4,4′-MDI), poly (1,4-butylene adipate) (PBA), and butane-1,4-diol (BDO). PBA as soft segment for TPU. 4,4′- MDI and BDO as hard segment for TPU. The effects of isocyanate index, hard segment content, and soft segment molecular weight on TPU micro-phase separation, molecular weight, and thermal performance are investigated. 3D-Braided-Glass Fiber (GF) reinforced TPU composites are prepared by in-situ polymerized TPU as the matrix resin. Investigation is conducted into how the mechanical properties and microstructure of the composites are affected by the matrix resin TPU’s structural parameters. As the isocyanate index increases, the mechanical properties of the composites first enhance and then weaken, and the interface bonding between TPU and GF gradually deteriorates. Increasing the molecular weight of soft segments has the same trend of change. With the increase of hard segment content, the mechanical properties of the composites are enhanced. The results demonstrate that the mechanical properties of the TPU/GF composites are at their best when the isocyanate index is 1.01, the hard segment content is 43%, and the PBA molecular weight is 2000, with the stretching strength being 289.6 MPa, the impact strength being 141.8 KJ/mm 2 , the bending strength being 183.2 MPa, and the flexural modulus being 10.7 GPa.

Thermoplastic polyurethane

Isocyanate

In situ polymerization

Flexural modulus

10.1177/08927057241251838

Cite

Citations (0)

Effect of Nano-SiO2 on Different Stages of UHMWPE/HDPE Fiber Preparation via Melt Spinning

Polymers (2022)

Qun Yang Run Zhang Mingfei Liu Ping Xue Lichao Liu

Ultra-high molecular weight polyethylene (UHMWPE)/high-density polyethylene (HDPE) blend with lower viscosity is more suitable for melt spinning compared to pure UHMWPE; however, the mechanical property of the blend fiber is hard to dramatically improve (the maximum tensile strength of 998.27 MPa). Herein, different content modified-nano-SiO2 is incorporated to UHMWPE/HDPE blend fiber. After adding 0.5 wt% nano-SiO2, the tensile strength and initial modulus of UHMWPE/HDPE/nano-SiO2 fiber are increased to 1211 MPa and 12.81 GPa, respectively, 21.57% and 43.32% higher than that of UHMWPE/HDPE fiber. Meanwhile, the influence of the nano-SiO2 content on the performance for as-spun filament and fiber are emphatically analyzed. The crystallinity and molecular chain orientation of as-spun filament reduces with the addition of nano-SiO2. On the contrary, for fiber, the addition of nano-SiO2 promoted the crystallinity, molecular chain orientation and grain refinement more obvious at a lower content. Furthermore, the possible action mechanism of nano-SiO2 in the as-spun filament extrusion and fiber hot drawing stage is explained.

High-density polyethylene

Melt spinning

Reactive extrusion

10.3390/polym15010186

Cite

Citations (6)

Circularly Polarized Phosphorescence Energy Transfer Combined with Chirality‐Selective Absorption for Modulating Full‐Color and White Circularly Polarized Long Afterglow

Angewandte Chemie (2024)

Kai Yang Run Zhang Yanze Liu Biao Zhao Youping Wu

Abstract Circularly polarized long afterglow (CPLA) attracts great interests in multi‐disciplinary fields with significant potentials in optical multiplexing applications, but achieving full‐color and white CPLA is still challenging. The present contribution reports the first success in utilizing circularly polarized phosphorescence energy transfer (CPP‐ET) combined with chirality‐selective absorption (CSA) to construct full‐color and white CPLA materials. Blue CPLA with luminescence dissymmetry factor ( g lum ) of 3×10 −2 is firstly obtained via the CSA effect of chiral helical polyacetylene and blue ultralong afterglow of inorganic phosphor BP. Significantly, full‐color and white CPLA films are prepared by simply blending different fluorophores into the blue‐CPLA films via CPP‐ET. Benefited from the persistent luminescence of BP, the lifetimes of the fluorophores increase from nanoseconds to minutes, and ultralong full‐color CPLA emissions lasting for more than 20 min are realized with g lum of 10 −3 . Also noticeably, chiral optoelectronic devices, multi‐dimension information encryption and chiral logic gate are developed based on the full‐color tunable CPLA‐active materials. The established strategy provides a universal platform for future development of CPLA‐active materials with great applications.

Chirality

10.1002/ange.202409514

Cite

Citations (0)

Isothermal and non-isothermal crystallization kinetics of UHMWPE composites incorporating with GNP/MWCNT

Journal of Polymer Research (2023)

Qun Yang Run Zhang Jing Tian Hailong He Ping Xue

Isothermal process

10.1007/s10965-023-03533-9

Cite

Citations (2)

Effect of PEW and CS on the Thermal, Mechanical, and Shape Memory Properties of UHMWPE

Polymers (2020)

Run Zhang Suwei Wang Jing Tian Ke Chen Ping Xue

Modified ultra-high-molecular-weight polyethylene (UHMWPE) with calcium stearate (CS) and polyethylene wax (PEW) is a feasible method to improve the fluidity of materials because of the tense entanglement network formed by the extremely long molecular chains of UHMWPE, and a modified UHMWPE sheet was fabricated by compression molding technology. A Fourier-transform infrared spectroscopy test found that a new chemical bond was generated at 1097 cm−1 in the materials. Besides, further tests on the thermal, thermomechanical, mechanical, and shape memory properties of the samples were also conducted, which indicates that all properties are affected by the dimension and distribution of crystal regions. Moreover, the experimental results indicate that the addition of PEW and CS can effectively improve the mechanical properties. Additionally, the best comprehensive performance of the samples was obtained at the PEW content of 5 wt % and the CS content of 1 wt %. In addition, the effect of temperature on the shape memory properties of the samples was investigated, and the results indicate that the shape fixity ratio (Rf) and the shape recovery ratio (Rr) can reach 100% at 115 °C and 79% at 100 °C, respectively, which can contribute to the development of UHMWPE-based shape memory polymers.

Compression molding

Shape-memory polymer

Molding (decorative)

10.3390/polym12020483

Cite

Citations (22)

Changes in Heat Resistance and Mechanical Properties of Peroxide Cross-Linking HDPE: Effects of Compounding Cross-Linkers

Polymers (2025)

Shunquan Liu Run Zhang Chenchao Fu Tian-Ci Zheng Ping Xue

Due to excellent chemical resistance and impermeability, high-density polyethylene (HDPE) is widely used in petrochemical transportation, product packaging, sports equipment, and marine applications. Yet, with the wide variety of service environments, its mechanical and thermal properties do not meet the demand. In the present study, a compounding cross-linker comprising di-tert-butyl peroxide (DTBP) and triallyl isocyanurate (TAIC) is employed by combining with a two-step preparation process. High-quality cross-linking reactions are achieved for HDPE. In this study, the cross-linking of DTBP is first examined separately. A peak cross-linking degree of 74.7% is achieved, and there is a large improvement in thermal resistance and mechanical properties. Subsequently, the composite cross-linking system of DTBP and TAIC is investigated. The peak cross-linking degree is 82.1% (10% increase compared to DTBP). The peak heat deformation temperature is 80.1 °C (22% increase compared to DTBP). The peak impact strength is 104.73 kJ/m2 (207% increase compared to neat HDPE). The flexural strength is 33.6 MPa (22% increase compared to neat HDPE). The results show that this cross-linking system further improves the cross-linking degree, heat resistance, and mechanical properties of HDPE, indicating its potential application in engineering materials for high performance.

High-density polyethylene

Compounding

Heat Resistance

Peroxide

10.3390/polym17040535

Cite

Citations (0)