Water‐vapor‐permeable polyurethane resin

Chwang, C. P.; Lee, S. N.; Yeh, Jen‐Taut; Chen, C. Y.; Chao, D. Y.

doi:10.1002/app.11132

Cited by 7 publications

(1 citation statement)

References 4 publications

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“…7 In recent years, in order to overcome the defects mentioned above, microfiber synthetic leather has been modified by a variety of methods, such as hydrolysis of PA, increasing the hydrophilic groups of PAs, the modification of polyurethane resin, etc. [8][9][10][11][12] Increasing the hydrophilic group is mainly used. However, these methods are complicated and costly, so they are only used in the scale of laboratory research.…”

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Study on the effect of the sanitary properties of microfiber synthetic leather base by using a filling agent

Tang

Wang

et al. 2017

Textile Research Journal

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In the manufacturing process of the microfiber synthetic leather, various types of filling agents were selected to fill the microfiber synthetic leather base to improve the sanitary properties, in which a zirconium tanning agent was used commonly. In this study, the softness, moisture absorption, water vapor permeability and mechanical properties of the base were used as indexes, and the type and dosage of the filling agent were optimized. The results indicated that the sanitary properties of the base treated by the filling agent were improved generally compared with that of the blank base. Among them, the moisture absorption increased by 28–45%, the water vapor permeability increased by 50–56% and the mechanical properties were significantly improved. The bases before and after being filled were characterized by Fourier infrared spectroscopy, the water contact angle, atomic force microscopy, scanning electron microscopy and the specific surface area. The results showed that the filling agent’s cross-linking effect on the base fiber led to the active group content and wettability of the base increasing, the fiber surface structure changing obviously and the fiber gap becoming larger with looser dispersion. Moreover, the specific surface area of the base increased.

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confidence: 99%

Study on the effect of the sanitary properties of microfiber synthetic leather base by using a filling agent

Tang

Wang

et al. 2017

Textile Research Journal

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Water vapor‐permeable polyurethane ionomer

Luo

Liou

Chin

et al. 2006

J of Applied Polymer Sci

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ABSTRACT:The reaction of toluene diisocyanate with 2,2,3,3-tetrafluoro-1-propanol (fluoro compound) or 3-glycidoxypropyl trimethoxysilane(siloxane compound) and other additives to form the structure of the fluoro-based or siloxanebased polyurethane (PU) ionomer has been proven by infrared spectra. Experimental results indicated that the amount of water vapor permeability of the film made by fluoro-based or siloxane-based PU ionomer appeared to gradually increase with increasing concentration of the siloxane compound or fluoro compound, as a result of the formation of more porosities. Our experimental results also showed that the water vapor absorption was seen to be larger for the film made by siloxane-based PU ionomer film than for the film made by fluoro-based PU ionomer film, as a result of increased hydrophilic groups attached to the backbone of the PU ionomer molecule. For the film prepared by siloxane-based PU ionomer, both tensile strength and elongation appeared to increase with an increase in the concentration of siloxane compound. This may be the result of the intermolecular interaction between siloxane-based PU ionomer molecules themselves, thus enhancing the crosslinking capability of the ionomer molecules. On the other hand, both tensile strength and elongation for the film prepared by fluoro-based PU ionomer decreased with increasing concentration of the fluoro compound, as a result of intramolecular interaction greatly reducing the crosslinking capability of the ionomer molecules.

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