Water-based matte oil-resistant synthetic leather and preparation method thereof

Abstract

The invention relates to water-based matte oil-resistant synthetic leather and a preparation method thereof. The synthetic leather comprises a base cloth layer, a solvent-free bonding layer and a dry-method PU surface layer which are sequentially arranged, and the synthetic leather further comprises an oil-resistant surface treatment layer formed on the dry-method PU surface layer; the raw material formula of the oil-resistant surface treatment layer is prepared form the components in parts by weight: 20-30 parts of a bright-surface polycarbonate anti-doodling auxiliary agent; 70-80 parts of a matte polycarbonate anti-doodling auxiliary agent; 8-10 parts of a cross-linking agent; 20-25 parts of a catalyst; and 0-10 parts of a solvent. According to the water-based matte oil-resistant synthetic leather and the preparation method thereof, the water-based dry-method PU surface layer is subjected to surface treatment by adopting a specific surface treating agent, so that the synthetic leather not only has a matte effect, but also has oil-resistant and anti-doodling performance, particularly has excellent stain removal performance on stains of a ball-point pen and a marking pen, and is easy to clean.

Description

technical field [0001] The invention belongs to the technical field of synthetic leather, and in particular relates to a water-based fog surface oil-resistant synthetic leather and a preparation method thereof. Background technique [0002] With the development of my country's economy and the continuous improvement of people's living standards, the value of environmental protection has become increasingly prominent, and it has become the first element in measuring development. The weight of environmental protection will directly determine the living space and sustainable development ability of synthetic leather enterprises, and ecological synthetic leather and clean production have become the development trend of the industry. [0003] Now more and more companies are committed to the development of water-based synthetic leather products. However, the water-based synthetic leather products currently on the market are usually high-gloss products, and some high-end products, su...

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Problems solved by technology

[0004] At present, the matte effect of synthetic leather usually adopts matte treatment agent to carry out surface treatment on the surface of synthetic leather, to obtain matte synthetic leather, as Chinese patent CN109518476A discloses a kind of water-based matte, scratch-resistant, soft synthetic leather, Including base fabric layer, wet polyurethane coating applied on base fabric, dry polyurethane coating applied on wet polyurethane layer, pearlescent layer printed on dry polyurethane layer with high solids, plate coated on pearlescent The matte treatment layer on the matte treatment layer is plate-coated on the water-based matte treatment layer on the matte treatment layer. Although the synthetic leather has a matte effect, it does not have oil resistance, and during the preparation of the synthetic leather, it is wet In the preparation process of the method polyurethane coating and the dry method polyurethane layer, the solvent dimethylformamide is added, which is still unfriendly to the environment and endangers human health.

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