scholarly journals Noble-gas-infused neoprene closed-cell foams achieving ultra-low thermal conductivity fabrics

RSC Advances ◽  
2018 ◽  
Vol 8 (38) ◽  
pp. 21389-21398 ◽  
Author(s):  
Jeffrey L. Moran ◽  
Anton L. Cottrill ◽  
Jesse D. Benck ◽  
Pingwei Liu ◽  
Zhe Yuan ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
Noble Gases ◽  
Noble Gas ◽  
Low Thermal Conductivity ◽  
Closed Cell

Herein, we develop, demonstrate, and model a repeatable process for synthesizing ultra-low-thermal-conductivity closed-cell neoprene garments by infusing high-molecular-weight noble gases.

The radiation effect on thermal conductivity of high strength ultra-high-molecular-weight polyethylene fiber by γ-rays

2006 ◽  
Vol 101 (4) ◽  
pp. 2619-2626 ◽  
Author(s):  
Atsuhiko Yamanaka ◽  
Yoshinobu Izumi ◽  
Tooru Kitagawa ◽  
Takaya Terada ◽  
Hideki Sugihara ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
Radiation Effect ◽  
High Strength ◽  
Polyethylene Fiber ◽  
Γ Rays ◽  
Ultra High Molecular Weight

The Synthesis and Application of a Novel Class of Polyols for Preparation of Polyurethane

2013 ◽  
Vol 357-360 ◽  
pp. 1441-1445
Author(s):  
Xiao Lin Li ◽  
Zheng Fang ◽  
Dong Ji ◽  
Zhi Dong Wan ◽  
Kai Guo
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Polyurethane Foams ◽  
Low Density ◽  
Cell Content ◽  
Low Thermal Conductivity ◽  
High Compressive Strength ◽  
Rigid Polyurethane Foams ◽  
Closed Cell ◽  
Rigid Foams

The synthesis of a novel class of diamine-based polyols derivatives and the potentials and the limitations of these polyols were reported. This class of diamine-based polyols with high hydroxyl values and no acid values can be used in rigid polyurethane foams. The prepared rigid foams show the properties of low density, high closed cell content, low thermal conductivity, and high compressive strength.

scholarly journals Thermal Conductivity of High-Strength Polyethylene Fiber and Applications for Cryogenic Use

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Atsuhiko Yamanaka ◽  
Tomoaki Takao
Keyword(s):  
Thermal Conductivity ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
High Strength ◽  
Fiber Direction ◽  
Fiber Reinforced ◽  
Cross Sectional ◽  
Fiber Reinforced Plastic ◽  
Reinforced Plastic ◽  
Polyethylene Fiber

The local temperature rise of the tape is one of instabilities of the conduction-cooled high temperature superconducting (HTS) coils. To prevent the HTS tape from locally raising a temperature, high thermal conductive fiber reinforced plastic was applied to coil bobbin or spacer for heat drain from HTS tape. The thermal conductivity of ramie fibers increases by increasing orientation of molecular chains with drawing in water, and decreases by chain scission with γ-rays irradiation or by bridge points in molecular chains with vapor-phase-formaldehyde treatments. Thermal conductivity of high strength ultra-high-molecular-weight (UHMW) polyethylene (PE) fiber increases lineally in proportion to tensile modulus and decreases by molecular chain scissions with γ-rays irradiation. This result suggested the contribution of the long extended molecular chains due to high molecular weight on the high thermal conductivity of high strength UHMW PE fiber. Thermal conductivity of high strength UHMW PE fiber reinforced plastics in parallel to fiber direction is proportional to the cross sectional ratio of reinforcement oriented in the conduction direction. Heat drain effect of high strength UHMW PE fiber reinforced plastic from HTS tape is higher than that of glass fiber reinforced plastic (GFRP) and lower than that of aluminum nitride (AlN). In the case of HTS coil, the thermal stability wound on coil bobbin made of high strength UHMW PE fiber reinforced plastic is good as that of AlN, and better than that of GFRP.

High thermal conductivity graphite nanoplatelet/UHMWPE nanocomposites

RSC Advances ◽  
2015 ◽  
Vol 5 (46) ◽  
pp. 36334-36339 ◽  
Author(s):  
Junwei Gu ◽  
Nan Li ◽  
Lidong Tian ◽  
Zhaoyuan Lv ◽  
Qiuyu Zhang
Keyword(s):  
Thermal Conductivity ◽  
Molecular Weight ◽  
Ball Milling ◽  
High Molecular Weight ◽  
Hot Pressing ◽  
High Thermal Conductivity ◽  
Graphite Nanoplatelets ◽  
Pressing Method ◽  
Ultra High Molecular Weight ◽  
Mechanical Ball Milling

High thermal conductivity graphite nanoplatelets/ultra high molecular weight polyethylene (GNPs/UHMWPE) nanocomposites are fabricated via mechanical ball milling followed by a hot-pressing method.

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