Microporous water-based waterproof gas-permeable film, water-based waterproof gas-permeable textile, and preparation method thereof

Abstract

The invention discloses a microporous water-based waterproof gas-permeable film, a water-based waterproof gas-permeable textile, and a preparation method thereof. The microporous water-based waterproof gas-permeable film is prepared from a water-based foamed resin. The water-based foamed resin comprises following raw materials: waterborne polyurethane emulsion, a stearate, polyether modified silicone oil, ammonia water, ethanolamine, sodium dodecylbenzenesulfonate, polyvinyl alcohol, polyethylene glycol, ethylene glycol, a catalyst, a crosslinking agent, polyethylene glycol 6000 bistearate andan associative thickener. The component composition and foaming ratio of the water-based foamed resin are limited, so that pores and foams are formed in the water-based foamed resin, and at last, theprepared water-based waterproof gas-permeable film is provided with water resistance, gas permeability, and moisture permeability.

Description

technical field [0001] The invention belongs to the field of textile preparation, and in particular relates to a microporous water-based waterproof and breathable membrane, a water-based waterproof and breathable textile and a preparation method thereof. Background technique [0002] China's outdoor products started relatively late, but have experienced explosive growth since 2000. Among outdoor products, waterproof and moisture-permeable fabrics account for a high proportion, especially the demand for high-performance waterproof and moisture-permeable clothing fabrics. However, the core technology with high-end waterproof and moisture-permeable performance is still mastered by a small number of foreign manufacturers. For example, Core-tex membrane material, that is, PTEF microporous membrane, has only a small amount of localization, but due to the high cost of materials, it is still not widely used. Wet coating processing can also form a good microporous structure, but the p...

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Problems solved by technology

However, the core technology with high-end waterproof and moisture-permeable performance is still mastered by a small number of foreign manufacturers. For example, Core-tex membrane material, that is, PTEF microporous membrane, has only a small amount of localization, but due to the high cost of materials, it is still not widely used. Wet coating processing can also form a good microporous structure, but the processing process is extremely polluting and there are residual amine solvents in the fabric that cannot meet the requirements of the European Union, which does not meet the requirements of product processing and environmental protection and safety. The processing of high-end outdoor textiles Product safety, environmental protection and low cost have always been the goals pursued by academia and industry, and it is also the only way for the development of high-end textiles in my country, so it has important social and economic benefits

[0003] Chinese patent CN102744940A discloses a production method for waterproof and moisture-permeable fabrics based on a water-based foaming system, which produces microporous waterproof and moisture-permeable fabrics, which are water-based and environmentally friendly, and achieve the purpose of waterproof and moisture-permeable through a simple coating method, but Products produced by this process have low hydrostatic pressure resistance and moisture permeability, and the on-site production control requirements are high, and the waterproof and moisture permeability stability is not enough. Can not meet customer needs

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