Parthenocissus-inspired, strongly adhesive, efficiently self-healing polymers for energetic adhesive applications

Abstract

Energetic self-healing adhesives have a positive effect on the energy level, mechanical properties, and microcrack healing performance of energetic composite materials (ECMs). However, it is very challenging to design and...

Second Natural Rubber with Self-Reinforcing Effect Based on Strain-Induced Crystallization

“…As shown in Figure 5d, EEUG-17.4%-DTSA-2 became more whitish when it was stretched to a strain of 1000%, suggesting the formation of crystals at high strain. 34 The energy dissipation of EEUG-17.4%-DTSA-2 at different strains was characterized by using cyclic tensile tests with an increasing strain but no delay time 45 SBR/PEI interlocked networks, 28 PU (hydrogen bonds), 46 PB dual network, 25 ENR/chitosan, 47 ENR/cellulose, 48 MIVs (mechanically interlocked vitrimers), 49 and SBR-M.HPDI.Upy dynamic liquid crystal networks. 50 (Figure 5e), and the hysteresis area represents the dissipated energy during each cycle.…”

“…(a) Stress−strain curve and (b) cyclic tensile−strain curves of EEUG-14.5%-DTSA-2, EEUG-14.5%-DTSA-3, and EEUG-17.4%-DTSA-2. (c) Comparison of mechanical properties with other recyclable elastomers: PDMS-Zn,45 SBR/PEI interlocked networks,28 PU (hydrogen bonds),46 PB dual network,25 ENR/chitosan,47 ENR/cellulose,48 MIVs (mechanically interlocked vitrimers),49 and SBR-M.HPDI.Upy dynamic liquid crystal networks 50. (d) Digital images showing the whitening process of the EEUG-17.4%-DTSA-2 at strain from 0 to 1000%.…”

Rapid self-healing and tough polyurethane based on the synergy of multi-level hydrogen and disulfide bonds for healing propellant microcracks

“…57 ln t = ln t 0 + E a (1) where E a is the activation energy, and R and T are the gas constant and absolute temperature, respectively. The activation energy of PU-C (60.3 kJ mol À1 ) was lower than other self-healing PU, which has been reported lately, 24,46,58,59 indicating that the energy barrier for the free movement of the molecular chain was lower (Fig. 4d and Fig.…”

“…[12][13][14][15][16][17][18][19][20] They had broad application prospects in aerospace, flexible electronics, smart coatings, and other fields. [21][22][23][24] Particularly in the aerospace field, selfhealing materials were expected to solve a series of safety problems caused by micro-cracks inside solid propellants and have received great attention.…”

Thermal decomposition of nano Al-based energetic composites with fluorinated energetic polyurethane binders: experimental and theoretical understandings for enhanced combustion and energetic performance

“…Energetic materials composed of polymeric binders and metallic fuels are widely applied in industrial and military elds, such as propellants, explosives, pyrotechnics et al [1][2][3][4][5] Metallic fuels, such as aluminum, are widely used in energetic composites to enhance the comprehensive performance, such as energy level, 6 combustion temperature, 7 density, 8,9 and so on. Nevertheless, aluminum particles in energetic composites oen suffer from incomplete combustion and easy agglomeration, leading to reduced energy release and combustion efficiency.…”