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High-performance gum rosin-modified hyperbranched vinyl ester resin derived from multifunctional pentaerythritol
Rosin Vinyl ester Thermal stability Chemical resistance Bio-based
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2023/12/21
In this article, gum rosin-based hyperbranched vinyl ester resin (VPEMPAE) was synthesized from maleic anhydride-modified gum rosin adduct (MPA). This adduct (MPA) was reacted with pentaerythritol to ...
Synthesis of Maleic-Modified Rosin Ester from Pine Rosin
Rosin modification Esterification Glycerol Diels-Alder Maleic
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2023/12/11
Rosin is the major component of Pine sap that has a composition of up to 90%. Rosin is an organic compound that consists of diterpene tricyclic compounds with carboxyl functional group. The presence o...
Rosin modified aminated mesoporous silica adsorbed tea tree oil sustained-release system for improve synergistic antibacterial and long-term antibacterial effects
TTO antibacterial evaluation mesoporous silica rosin sustained release
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2023/12/5
Tea tree oil, a natural antibacterial compound, cannot be used effectively because of its volatile nature. In this work, a biocompatible carrier was prepared and loaded with tea tree essential oil. Th...
Effect of Natural Crosslinker on the Properties of Chicken Feather and Modified Vegetable Oil Based Green Composites
Biocomposite natural fiber mechanical properties thermal properties biodegradable
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2023/12/4
For the past few decades environmental concerns had been influencing the researchers to employ natural fibers and polymers from renewable resources as a replacement for petroleum-based resins and synt...
Carbon Addition Modified the Response of Heterotrophic Respiration to Soil Sieving in Ectomycorrhizal-Dominated Forests
soil heterotrophic respiration soil sieving intact soil core carbon sequestration microbial community plant functional type
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2023/12/1
Soil heterotrophic respiration (Rh) is an important pathway of carbon (C) dioxide release from terrestrial soils to the atmosphere. It is often measured using sieved soil in a laboratory, but the unce...
Preparation and research of epoxy modified by carboxyl-terminated polybutylene adipate at room temperature
NANOFILLERS IMPROVEMENT RESIN
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2023/12/1
In this study, carboxyl-terminated polybutylene adipate (CTPBA) was used to modify epoxy resin, and the modified epoxy resin was cured by a room temperature rapid curing agent (T-31). The effects of C...
Thermal Degradation Behavior of Epoxy Resin Containing Modified Carbon Nanotubes
epoxy resin carbon nanotubes silicone thermal degradation flame retardancy activation energy
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2023/12/1
Via the surface-grafting of carbon nanotubes (CNTs) with a silicon-containing flame retardant (PMDA), a novel flame retardant CNTs-PMDA was synthesized. The flame retardancy was tested by cone calorim...
GUS Aerogel Modified Phenolic Nanocomposites: Effects of Inhomogeneous Cross-Linking Characteristics and Interfacial Phase Properties on the Mechanical Behavior
GLASS-TRANSITION GRAPHENE OXIDE POLYMER NANOCOMPOSITES DIELECTRIC-PROPERTIES MOLECULAR MOBILITY DYNAMICS REINFORCEMENT NANOPARTICLES TEMPERATURE DISPERSION
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2023/12/1
Mechanical properties of thermosetting polymer nano composites (PNCs) are largely dominated by the polymer-nanoparticle interfacial phase. However, not much is known about the association of interfaci...
Synthesis of eugenol-modified epoxy resin and application on wood flame retardant coating
Wood Flame retardant Bio-based epoxy resin Low curing activation energy
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2023/11/30
In this paper, a novel epoxy flame retardant PPDEG-EP (P-E) was synthesized from eugenol by nucleophilic substitution reaction and Prilezhaev epoxidation. The chemical structure was identified by nucl...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：3D Fracture Development Analysis with A Modified XFEM
XFEM 三维裂缝 发育分析
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2023/11/6
扩展有限元法(XFEM)是目前裂纹分析的主流数值方法。2009年起，ABAQUS、ANSYS等主流商业软件集成XFEM并应用于裂纹问题，标志着该方法被工业界广泛接受。然而，在实际应用中XFEM仍然受到两方面的困扰：总体方程高度病态和动力学计算时能量难以守恒。基于“困难的根源在于单位分解插值引入的额外自由度”这一判断和认识，我们提出了一种无额外自由度的改进型扩展有限元方法，有效解决了现有方法总体刚度...
Highly selective production of renewable p-xylene from bio-based2,5-dimethylfuran and ethylene over Al-modified H-Beta zeolites
p-xylene ethylene Al-modified H-Beta zeolites
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2023/6/19
Highly selective synthesis of renewable p-xylene (PX) from bio-based 2,5-dimethylfuran (DMF) and ethylene was successfully realized on H-Beta zeolite catalysts with further Al-modifications. The influ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Low regularity conservation laws for the fifth-order modified KdV equations in Besov spaces
Besov空间 五阶修正KdV方程 低正则性 守恒定律
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2023/4/19
We get a priori estimates for the fifth-order modified KdV equations in Besov spaces with low regularity which cover the full subcritical range. These estimates are obtained from the power series expa...
Modified microwave oven cooks up next-gen semiconductors（图）
改良微波炉 半导体 半导体材料
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2023/5/19
A household microwave oven modified by a Cornell Engineering professor is helping to cook up the next generation of cellphones, computers and other electronics after the invention was shown to overcom...
【国际会议】Waste Plastic Modified Asphalt Binders and Mixtures（线上）
长安大学公路学院 Waste Plastic Modified Asphalt Binders Mixtures
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2023/4/23
【国际会议】Waste Plastic Modified Asphalt Binders and Mixtures（线上）详情见下文：
Chemically modified mask design could potentially slow the spread of viruses（图）
Chemically modified potentially slow spread viruses
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2020/4/29
A Northwestern University researcher has received funding to develop a new self-sanitizing medical face mask that deactivates viruses on contact. The project received a rapid response resear...