Effects of Pretreatment on the Mechanical and Wash-and-Wear Properties of Cotton Fabrics Cross-Linked with Vapor-Phase-Formaldehyde and Dimethyloldihydroxyethyleneurea.

Abe, Shunzo; Ohta, Shozo; Yoshikawa, Masayuki; Tsutsumi, Masayuki

doi:10.4188/transjtmsj.52.5_t65

Cited by 4 publications

(1 citation statement)

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“…Fibers mainly made of cellulose, including ramie and cottons, are well known for being bridged with formaldehyde (HCHO) [31,37,[39][40][41][42][43][44], for example, by VP-HCHO treatment [39] as shown in Figure 3. This technology is employed for stabilizing the conformity of cellulose fibers and is used practically in clothing materials such as wash and wear shirts [40,[42][43][44][45]. Thermal conductivity decreases to about 20-25% by VP-HCHO treatments as shown in Figure 4 [28].…”

Section: Thermal Conductivity Of High-strength Polyethylene Fibermentioning

confidence: 99%

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

Yamanaka

Takao

2011

ISRN Materials Science

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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.

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Section: Thermal Conductivity Of High-strength Polyethylene Fibermentioning

confidence: 99%

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

Yamanaka

Takao

2011

ISRN Materials Science

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Effects of vapor‐phase‐formaldehyde treatments on thermal conductivity and diffusivity of ramie fibers in the range of low temperature

Yamanaka

Yoshikawa

Abe

et al. 2005

J Polym Sci B Polym Phys

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To understand the influence to thermal conductivity by bridging in the polymer fibers, the thermal conductivity, and thermal diffusivity of ramie fiber and those bridged by formaldehyde (HCHO) using vapor‐phase method (VP‐HCHO treatment) were investigated in the lower temperature range. The thermal conductivities of ramie fiber with and without VP‐HCHO treatments decreased with decreasing temperature. Thermal diffusivities of ramie fiber with and without VP‐HCHO treatments were almost constant in the temperature range of 250–50 K, and increased by decreasing temperature below 50 K. Thermal conductivity and thermal diffusivity of ramie fiber decreased by VP‐HCHO treatment. The crystallinities and orientation angles of ramie fibers with and without VP‐HCHO treatment were measured using solid state NMR and X‐ray diffraction. These were almost independent of VP‐HCHO treatment. Although tensile modulus decreased slightly by VP‐HCHO treatment, the decrease could not explain the decrease in thermal conductivity and diffusivity with decreasing sound velocity. The decrease of the thermal diffusivity and thermal conductivity by VP‐HCHO treatment suggested the possibility of the reduction of the mean free path of phonon by HCHO in VP‐HCHO treated ramie fiber. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 2754–2766, 2005

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The Comfortable Filament: Cellulose Filament

Fukui¹

2000

Sen-i Gakkaishi

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Effects of Pretreatment on the Mechanical and Wash-and-Wear Properties of Cotton Fabrics Cross-Linked with Vapor-Phase-Formaldehyde and Dimethyloldihydroxyethyleneurea.

Cited by 4 publications

References 0 publications

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

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

Effects of vapor‐phase‐formaldehyde treatments on thermal conductivity and diffusivity of ramie fibers in the range of low temperature

The Comfortable Filament: Cellulose Filament

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