Similar to most air filtration strategies, fibrous filters have the trade-off between efficiency and flow. An electrostatic-assisted electret filter may help improve while maintaining In this work, we present a silk-nanofiber-modified polyethylene terephthalate (SNF@PET) fiber with an improved compression strength modulus by 1.9 1.6 times respectively, at 2 wt % SNF content, increasing structural stability of support higher The efficiencies SNF@PET membrane for PM0.3-0.5 PM0.5-1 are up 99.7%...

Poly(butylene adipate-co-terephthalate) (PBAT) is a promising degradable polymer for replacing non-degradable traditional plastics to mitigate pollution. However, its low softening temperature and poor hardness impede application. Herein, PBAT stereocomplex polylactide (sc-PLA) blends were fabricated through melt-blending process balance the heat resistance mechanical strength of in this research. The effects PLA content hot embossing on blend properties comprehensively investigated. results...

Abstract This study investigates the nonisothermal crystallization and compatibility behavior of poly( d -lactide) (PDLA) l (PLLA) blends modified with varying amounts poly(butylene succinate) (PBS), ranging from 0 wt% to 50 wt%. When PBS content reaches 30 %, PDLA/PLLA composites exhibit partial miscibility, as confirmed by differential scanning calorimetry (DSC), X-ray diffraction (XRD), tensile tests. The addition significantly influences kinetics, promoting formation stereocomplex (SC)...

Capacitive pressure sensors play an important role in the field of flexible electronics. Despite significant advances two-dimensional (2D) soft sensors, one-dimensional (1D) fiber electronics are still struggling. Due to differences structure, theoretical research 2D has difficulty guiding design 1D sensors. The multiple response factors and capacitive mechanism have not been explored. Fiber urgently need a tailor-made development path. In this regard, we established pressure-sensing...

Uncontrollable side reactions at the metal interface have been identified as root cause of formation a fragile solid electrolyte interphase, leading to irreversible sodium loss in batteries. Here, we proposed an engineering strategy that employed carboxyl functionalized cellulose separator provide strong dipole moments and induce cleavage P–F bond construct SEI rich NaF. In addition, nuclear magnetic resonance technology confirmed with prevented reduction organic solvents by attracting...

A set of polymer composite bolted T-joints with novel configuration consisting internal skeleton and external skin was fabricated using a prepreg-RTM co-curing molding process. Experiments were conducted to study their mechanical properties under bending load. finite element model resin area between the established verified by experimental results. Then, damage propagation process failure mechanism joint influence three factors related layer characteristics investigated validated models. The...

Abstract With the development of ageing society, wearable strain sensors have great application prospects in fields health detection, artificial intelligence, and motion recognition. However, traditional forms film‐like suffer from low sensitivity, adhesion, impermeability during use, which severely limit their practical applications. To overcome these problems, we propose a strategy to fabricate polyurethane/polydopamine/MXene (TPU/PDA/MXene) composite fibers by wet spinning. Furthermore,...

The concept of multilayer bump foils was introduced in the design foil bearings to produce a double-bump bearing, which can provide increased load capacity and damping by adding another underlying structure. height difference between upper lower bumps is crucial parameter application such In this study, two with various differences are designed fabricated compare an ordinary bearing. Three examined via static dynamic tests estimate structural stiffness equivalent viscous damping. Test...

Energy management strategy is a critical technology for improving the fuel economy of wheel-drive hydraulic hybrid vehicles. For driving, power-following control proposed in this study by adding several working points engine optimal power curve. braking, “I” curve distribution based on braking strength zmin was adopted. A test bench constructed according to quarter prototype vehicle. Taking typical conditions Federal Urban Driving Schedule (FUDS) and selfset extra-urban driving schedule...

Today's modular, mixed-signal CMOS process platforms are excellent choices for manufacturing of highly integrated, large-format read out integrated circuits (ROICs). Platform features, that can be used both cooled and un-cooled ROIC applications, include (1) quality passives such as 4fFμm² stacked MIM capacitors linearity higher density capacitance per pixel, 1kOhm high-value poly-silicon resistors, 2.8μm thick metals efficient power distribution reduced I-R drop; (2) analog...

The disposal of waste tire rubber has gained more attention from the viewpoint green, environmental protection, and sustainability. Numerous attempts have been stated on properties crumb concrete (CRC) observed that there is a large reduction compressive strength elastic modulus CRC with increase substitution rate. Based volume content 5%, steel fibers nanosilica were added to make fiber‐and‐nanosilica‐reinforced (SFNS‐CRC) in this paper. effects fiber SFNS‐CRC studied, including strength,...

Abstract Fiber crossbars are an emerging architecture in electronic devices, and they have become the favored fundamental units for state‐of‐the‐art smart textiles. crossbar sensors with high linearity can provide more realistic pressure feedback, faster circuit response time, simpler data processing systems. However, due to unique structure, replicating existing linear strategies presents challenges. To address this issue, a fiber sensor is prepared that incorporates low modulus coupling...

Concrete is the most widely used building material in world. In terms of traffic and bridge construction, concrete also materials. The cement inherent advantages having a high compressive strength while has easy to produce cracks, poor impact resistance weaknesses. These weaknesses limit application concrete. order improve comprehensive quality concrete, further scope pavement, main problems pavement analyzed. Then progress current hot research field fiber reinforced analyzed...

The effect of coagulation conditions [coagulation bath temperature (T cb), water concentration (C and air gap distance (D ag)] during the dry-jet wet-spinning process on surface morphology, microstructures, mechanical properties dihydroxy poly(p-phenylene benzobisoxazole) (DHPBO) nascent fibers was investigated. system polyphosphoric acid (PPA)/H2O stretch ratio kept as 1.7. crystal characteristics, DHPBO were characterized by XRD, SEM, single-fiber tensile testing. results indicate that...

In this study, a series of experiments were conducted to investigate the effects hook-shaped steel fiber (SF) and nanosilica (NS) on flexural properties rubber concrete (RC), modification mechanisms NS fiber-and-nanosilica reinforced (SFNS-RC) also revealed by using X-ray diffraction (XRD) scanning electron microscope. Based RC specimen with content 5%, experimental variables included SF volume fractions (0%, 0.5%, 1.0%, 1.5%) replacement ratios 1%, 2%). The results indicated that could...

The extended end-plate connections widely used in steel frames, at home and abroad，many countries have given varieties of different methods to determine thickness. This paper, uses the plastic theory analyze thickness figure 7.2.9a CECS 102：2002 specification, adopts small deformations geometric relations equal principle work both inside outside, prying force issue is considered according whether deformation bolts do work, finally discuss design process Contrasting present norms, this method...