The Design and Manufacture of a Multilayer Low-Temperature Protective Composite Fabric Based on Active Heating Materials and Passive Insulating Materials

Abstract

Based on active heating materials (the phase change microcapsules (microPCMs)) and passive insulating materials (SiO2 aerogel), a new-type multilayer low temperature protective composite fabric (MPF) was designed and manufactured to meet the demands of protection and operation in a short time under a low-temperature environment. Results showed that the MPF consisted of three layers including the fabric layer, the microPCM function layer, and the SiO2 aerogel thermal insulation layer. The differential scanning calorimeter (DSC) results demonstrated that the phase transition enthalpy of the composite was 96.2 J/g during the cooling process. The low-temperature resistance and thermal insulation performance at −50 °C were investigated. The results also demonstrated that the low-temperature resistance time of the MPF was 660 s and the power consumption of the MPFs needed to maintain 37 °C for 10 and 20 min were 629 J and 1872 J, respectively. Compared with the microPCM function layer and the thermal insulation layer, which have the same thickness as the MPF, the low-temperature resistance time of the MPF was prolonged for about 2 and 3 min, respectively. The MPF could provide effective protection of the low-temperature work in a short time and could be applied as potential materials in low-temperature protection.

Recent advances in novel aerogels through the hybrid aggregation of inorganic nanomaterials and polymeric fibers for thermal insulation

“…[78] Nonwoven textile is widely used in the fields of medical protective clothing, blankets, garments, air filters, packaging, automobiles, geotextiles, drapes, wound dressing, crop covers, masks, and wet tissues as a result of the advantages of light weight, high output, moderate strength and stability, good stability, and low cost. [79][80][81] Nonwoven textile can be divided into melt-blown, needlepunched, spun-bonded, spun-laced, and thermal-bonded nonwoven textile according to the difference in the fabrication method and process. [82][83][84][85] There are a variety of polymers that can be used to manufacture nonwoven textile, such as polypropylene (PP), polyester (PET), polylactic acid (PLA), polyamide (PA), and so on.…”

“…The filaments are then laid into a web structure, and reinforced by self-bonding or mechanical or thermal bonding to form spun-bonded nonwoven textile. [81] Spun-bonded PET nonwoven textile has various excellent properties, such as dimensional stability, high strength, high elasticity, and UV resistance. [87][88][89] In addition, the needle-punched nonwoven textile has become popular due to the diverse mechanical and physical properties that can provide different thickness and densities to meet various requirements.…”

Preparation and characterization of an electromagnetic composite polypyrrole/polyethylene short filament geotextile

“…DSC, as a thermal analysis method, collects information on thermodynamic processes, such as melting, crystallization, curing, oxidation, and cross-linking by controlling the temperature change during the test. The PE geotextile and polypyrrole/PE short filament geotextile composite were measured using a differential scanning calorimeter (DSC204F1, NETZSCH-Ger€ atebau GmbH) under N 2 protection at a single temperature rise rate of 10 C/min from 25 C to 300 C. 35 Mechanical property analysis. According to the GB/T 3923.1-2013 standard, "Textiles.…”

“…As the frequency increases, the incident electromagnetic microwaves gradually increase and the number of electromagnetic microwaves that the material can shield gradually increases until it reaches saturation, and as the frequency increases, the incident electromagnetic microwaves cannot be shielded by the surface of the material and therefore transmit through the material, giving the SE a weakening trend. 35 Conductivity study of the polypyrrole/polyethylene short filament geotextile composite. The average surface resistance of the polypyrrole/PE short filament geotextile composite measured at the test points was 38.64 X.…”

Characterization of a polyaniline/pre-oxidized fiber felt electromagnetic wave absorbing composite

“…Pre-oxidized fiber felt and the polyaniline/preoxidized fiber felt composite were tested at a single temperature rise from 25 C to 300 C at a rate of 10 C/min under nitrogen protection. 33 Tensile property test. A multifunctional electronic fabric strength meter at a distance of 10 cm from the upper and lower fixtures was employed to measure the breaking strength and elongation at break of the polyaniline/ pre-oxidized fiber felt composite.…”