阅读说明：本技术 一种新型速干合成革及其制备方法 (Novel quick-drying synthetic leather and preparation method thereof ) 是由 简连锋 于 2020-05-27 设计创作，主要内容包括：本发明属于合成革技术领域,具体涉及一种速干合成革及其制备方法,所要解决的问题是提供一种具有速干降温效果、改善了人造革与皮肤之间接触的黏腻感、具有良好的舒适性感观的速干合成革及其制备方法；采用的具体方案为：依次包括基布层,粘结层,中间层和面层,所述面层包括：PU树脂90-115份,DMF 50-72份,醋酸乙酯10-15份,色浆5-10份,IRR材料15-25份；所述中间层包括：高固PU树脂90-100份,DMF 35-38份,色浆5-10份,交联剂10-15份；所述粘结层包括：聚氨酯粘合树脂90-105份,DMF 50-72份,丁酮5-10份,交联剂10-15份,本发明广泛应用于合成革技术领域。(The invention belongs to the technical field of synthetic leather, and particularly relates to quick-drying synthetic leather and a preparation method thereof, aiming at solving the problems of providing quick-drying synthetic leather which has the effects of quick-drying and cooling, improves the sticky feeling of the contact between the artificial leather and the skin, and has good comfort feeling and a preparation method thereof; the adopted specific scheme is as follows: include base cloth layer, tie coat, intermediate level and surface course in proper order, the surface course includes: 90-115 parts of PU resin, 50-72 parts of DMF (dimethyl formamide), 10-15 parts of ethyl acetate, 5-10 parts of color paste and 15-25 parts of IRR (infrared radiation) material; the intermediate layer includes: 90-100 parts of high-solid PU resin, 35-38 parts of DMF (dimethyl formamide), 5-10 parts of color paste and 10-15 parts of cross-linking agent; the bonding layer includes: 90-105 parts of polyurethane adhesive resin, 50-72 parts of DMF (dimethyl formamide), 5-10 parts of butanone and 10-15 parts of cross-linking agent, and the invention is widely applied to the technical field of synthetic leather.)

1. The utility model provides a novel rapid-curing cutback synthetic leather, includes base cloth layer, tie coat, intermediate level and surface course in proper order, its characterized in that: the surface layer comprises the following materials in parts by weight: 90-115 parts of PU resin, 50-72 parts of DMF (dimethyl formamide), 10-15 parts of ethyl acetate, 5-10 parts of color paste and 15-25 parts of IRR (infrared radiation) material;

the intermediate layer comprises the following raw materials in parts by weight: 90-100 parts of high-solid PU resin, 35-38 parts of DMF (dimethyl formamide), 5-10 parts of color paste and 10-15 parts of cross-linking agent;

the bonding layer comprises the following raw materials in parts by weight: 90-105 parts of polyurethane adhesive resin, 50-72 parts of DMF (dimethyl formamide), 5-10 parts of butanone and 10-15 parts of cross-linking agent.

2. The novel quick-drying synthetic leather according to claim 1, characterized in that: the IRR material is composed of 30-40 parts of aluminum, 20-30 parts of calcium, 20-30 parts of magnesium, 10-20 parts of silicon and 8-15 parts of a dispersing agent according to parts by weight, wherein the aluminum, the calcium, the magnesium and the silicon are synthesized nano particles.

3. The preparation method of the novel quick-drying synthetic leather according to claim 1 is characterized by comprising the following steps of:

1) mixing ingredients:

respectively mixing the raw materials of the surface layer, the middle layer and the bonding layer, stirring uniformly, filtering and sealing for later use;

2) dry-process veneering:

uniformly coating the prepared surface layer raw material on the selected release paper pattern, drying to obtain a PU surface layer dry film, uniformly coating a high-solid-content middle layer material on the PU surface layer dry film, drying, uniformly coating a bonding layer on the high-solid-content middle layer material, attaching a base fabric, drying, cooling, curing, separating from the release paper, and performing surface treatment to obtain a PU leather finished product.

4. The preparation method of the novel quick-drying synthetic leather according to claim 3, wherein the surface treatment agent used for the surface treatment in the step 2) comprises 10-15 parts of water-based surface treatment agent and 5-7 parts of IRR material.

Technical Field

The invention belongs to the technical field of synthetic leather, and particularly relates to quick-drying synthetic leather and a preparation method thereof.

Background

The artificial leather has wide application, and mainly comprises daily leather, automobile leather, national defense leather, agricultural leather, cultural leather for sports and the like. PU leather is the skin of polyurethane composition. The natural leather is widely applied to decoration of bags, clothes, shoes, vehicles and furniture, is increasingly determined by the market, has wide application range, large quantity and multiple varieties, and cannot be met by the traditional natural leather. Artificial leather and synthetic leather are important components of the plastic industry and are widely used in various industries of national economy. The artificial leather and synthetic leather have been developed internationally for more than 60 years, and the artificial leather is developed and produced in China since 1958, which is an earlier developed industry in the plastic industry in China. In recent years, the development of the industries of Chinese artificial leather and synthetic leather not only increases the equipment production line of production enterprises, the product yield increases year by year, and the variety and the color increase year by year, but also has own industry organization in the industry development process and has considerable cohesion, so that the enterprises of Chinese artificial leather and synthetic leather, including related industries, can be organized together to develop a rather powerful industry.

A large amount of artificial leather can be used for decoration in an automobile in daily life, the artificial leather produced by the prior art does not have the performance of moisture absorption and quick drying, the hydrophilicity of the artificial leather is poor, and external moisture cannot be absorbed. Terminal consumer is relatively poor to the use impression of this synthetic leather, and in the use, the sense of stickiness of contact between synthetic leather and the skin is more audio-visual to convey terminal consumer's use impression, and the travelling comfort is relatively poor.

Disclosure of Invention

The invention overcomes the defects in the prior art, and provides the novel quick-drying synthetic leather with quick-drying and cooling effects, improved sticky feeling of contact between artificial leather and skin and good comfort feeling and the preparation method thereof.

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a novel rapid-curing cutback synthetic leather includes base cloth layer, tie coat, intermediate level and surface course in proper order, the material of surface course includes by weight: 90-115 parts of PU resin, 50-72 parts of DMF, 10-15 parts of ethyl acetate, 5-10 parts of color paste and 15-25 parts of IRR material;

the intermediate layer comprises the following raw materials in parts by weight: 90-100 parts of high-solid PU resin, 35-38 parts of DMF (dimethyl formamide), 5-10 parts of color paste and 10-15 parts of cross-linking agent;

the bonding layer comprises the following raw materials in parts by weight: 90-105 parts of polyurethane adhesive resin, 50-72 parts of DMF (dimethyl formamide), 5-10 parts of butanone and 10-15 parts of cross-linking agent.

The IRR material is composed of 30-40 parts of aluminum, 20-30 parts of calcium, 20-30 parts of magnesium, 10-20 parts of silicon and 8-15 parts of a dispersing agent according to parts by weight, wherein the aluminum, the calcium, the magnesium and the silicon are synthesized nano particles.

The IRR material added in the invention for improving the quick-drying effect of the finished leather is also suitable for the synthetic leather taking PVC as the base material, and the technical personnel in the field can adjust the ingredients and the preparation method of the synthetic leather according to the difference of the base material and can also realize the quick-drying synthetic leather taking PVC as the base material.

A preparation method of novel quick-drying synthetic leather comprises the following steps:

1) mixing ingredients:

respectively mixing the raw materials of the surface layer, the middle layer and the bonding layer, stirring uniformly, filtering and sealing for later use;

2) dry-process veneering:

uniformly coating the prepared surface layer raw material on the selected release paper pattern, drying to obtain a PU surface layer dry film, uniformly coating a high-solid-content middle layer material on the PU surface layer dry film, drying, uniformly coating a bonding layer on the high-solid-content middle layer material, attaching a base fabric, drying, cooling, curing, separating from the release paper, and performing surface treatment to obtain a PU leather finished product.

The surface treatment agent used in the surface treatment in the step 2) comprises 10-15 parts of water-based surface treatment agent and 5-7 parts of IRR material.

Compared with the prior art, the invention has the beneficial effects that: the invention adds IRR material in PU resin and coating layer, which contains aluminum, calcium, magnesium, silicon, which can not react with the group in polyurethane resin and can stably exist with DMF/MEK/IPA solvent; when leather surface course and water contact, because the specific heat capacity of metal is less than resin and water, when ambient temperature risees, the nanometer metal of evenly distributed on the synthetic leather can rapid heating up, takes away the moisture and the heat on artificial leather surface course from the evaporation of acceleration moisture, plays the effect of rapid-curing cutback cooling, has improved the glutinous sense of contact between synthetic leather and the skin, brings better travelling comfort sense to promote the travelling comfort of human and synthetic leather contact. Meanwhile, different amounts of IRR materials are added into the coating layer and the resin layer, and the content of the resin layer is far greater than that of the IRR materials in the coating layer, so that the prepared synthetic leather has the effects of quick drying and cooling, the coating layer and the resin layer generate temperature difference when the quick drying and cooling effects are achieved, and meanwhile when the temperature in a vehicle is low, the skin cannot feel too cold on the surface when the skin touches the surface.

Detailed Description

The present invention is further illustrated by reference to the following examples.