Method for preparing environmentally-friendly flame-retardant bio-based automobile chair polyurethane synthetic leather

Abstract

The invention relates to a method for preparing environmentally-friendly flame-retardant bio-based automobile chair polyurethane synthetic leather. The method comprises the following steps: firstly, cospinning a bio-based raw material and chinlon to obtain bio-based base cloth, and carrying out dipping, extrusion and drying to obtain a bio-based basic material with flame retardancy; preparing a halogen-free flame-retardant high-solid polyurethane membrane in a release paper membrane transferring mode, and peeling off the release paper membrane to obtain a high-solid membrane with flame retardancy; finally compounding the bio-based basic material with the high-solid membrane, thereby obtaining a finished product. The environmentally-friendly flame-retardant bio-based automobile chair polyurethane synthetic leather prepared with the method has flame retardancy which meets requirements of grade B provided by 'GB 8410-2006 combustion property of automotive trim material'. Meanwhile, the leather has the advantages of low VOC (volatile organic compound), good environment protection, flexible and full hand feelings, good surface skin friendliness, high physical strength, oil resistance, aging resistance, and the like.

Description

technical field

[0001] The invention relates to the field of preparation methods of polyurethane synthetic leather, in particular to a preparation method of an environment-friendly and flame-retardant bio-based polyurethane synthetic leather for automobile seats. Background technique

[0002] At present, automotive interior materials mainly include synthetic leather, leather, thermoplastic polymers and textile materials. With the improvement of people's life and the increasing awareness of health and environmental protection, the hazards of using ordinary leather for car seat cushions are gradually discovered, especially the environmental protection and flame retardancy.

[0003] Commonly used flame retardants generally use halogen-based flame-retardant materials, which have good flame-retardant properties and relatively low prices, but they generate a large amount of smoke during combustion and release a large amount of hydrogen halide gas, which has strong corrosion proper...

Examples

preparation example Construction

[0029] Such as figure 1 Shown, a kind of preparation method of environmental protection, flame-retardant bio-based car seat polyurethane synthetic leather, comprises the following steps:

[0030] (1) Co-spin bio-based raw materials and nylon to obtain a bio-based cloth base, then impregnate the bio-based cloth base with water-based polyurethane / halogen-free water-based flame retardant impregnating material, then squeeze and dry in sequence to obtain a Combustible bio-based substrates;

[0031] (2) Through the release paper film transfer method, the halogen-free flame-retardant high-solid polyurethane material is laminated to obtain a halogen-free flame-retardant high-solid polyurethane film, and then the release paper is peeled off to obtain a high-solid film with flame-retardant properties;

[0032] (3) Composite the flame-retardant bio-based substrate obtained in step (1) with the flame-retardant high-solid film obtained in step (2), and then perform surface treatment and m...

Embodiment 1

[0045] 1. Co-spinning bio-based raw materials and nylon to form a bio-based high-strength, high-elastic bio-based cloth base, which is impregnated with water-based polyurethane / halogen-free water-based flame retardant impregnation material, extruded, and dried to obtain a bio-based fabric with flame-retardant properties. Substrate, standby; wherein the preferred formula of water-based polyurethane / halogen-free water-based flame retardant impregnating material is as follows:

[0046]

[0047] 2. Through the release paper film transfer method, the halogen-free flame-retardant high-solid polyurethane material is laminated to obtain a halogen-free flame-retardant high-solid polyurethane film, and then the release paper is peeled off to obtain a high-solid film with flame-retardant properties; among them, the halogen-free flame-retardant The preferred formula of burning high solid polyurethane material is as follows:

[0048]

[0049] 3. Composite the bio-based base material wi...

Embodiment 2

[0051] 1. Co-spinning bio-based raw materials and nylon to form a bio-based high-strength, high-elastic bio-based cloth base, which is impregnated with water-based polyurethane / halogen-free water-based flame retardant impregnation material, extruded, and dried to obtain a bio-based fabric with flame-retardant properties. Substrate. Among them, the preferred formula of water-based polyurethane / halogen-free water-based flame retardant impregnation material is as follows:

[0052]

[0053] 2. Through the release paper film transfer method, the halogen-free flame-retardant high-solid polyurethane material is laminated to obtain a halogen-free flame-retardant high-solid polyurethane film, and then the release paper is peeled off to obtain a high-solid film with flame-retardant properties; among them, the halogen-free flame-retardant The preferred formula of burning high solid polyurethane material is as follows:

[0054]

[0055] 3. Composite the bio-based base material with...

technical field

[0001] The invention relates to the field of preparation methods of polyurethane synthetic leather, in particular to a preparation method of an environment-friendly and flame-retardant bio-based polyurethane synthetic leather for automobile seats. Background technique

[0002] At present, automotive interior materials mainly include synthetic leather, leather, thermoplastic polymers and textile materials. With the improvement of people's life and the increasing awareness of health and environmental protection, the hazards of using ordinary leather for car seat cushions are gradually discovered, especially the environmental protection and flame retardancy.

[0003] Commonly used flame retardants generally use halogen-based flame-retardant materials, which have good flame-retardant properties and relatively low prices, but they generate a large amount of smoke during combustion and release a large amount of hydrogen halide gas, which has strong corrosion proper...

Examples

preparation example Construction

[0029] Such as figure 1 Shown, a kind of preparation method of environmental protection, flame-retardant bio-based car seat polyurethane synthetic leather, comprises the following steps:

[0030] (1) Co-spin bio-based raw materials and nylon to obtain a bio-based cloth base, then impregnate the bio-based cloth base with water-based polyurethane / halogen-free water-based flame retardant impregnating material, then squeeze and dry in sequence to obtain a Combustible bio-based substrates;

[0031] (2) Through the release paper film transfer method, the halogen-free flame-retardant high-solid polyurethane material is laminated to obtain a halogen-free flame-retardant high-solid polyurethane film, and then the release paper is peeled off to obtain a high-solid film with flame-retardant properties;

[0032] (3) Composite the flame-retardant bio-based substrate obtained in step (1) with the flame-retardant high-solid film obtained in step (2), and then perform surface treatment and m...

Embodiment 1

[0045] 1. Co-spinning bio-based raw materials and nylon to form a bio-based high-strength, high-elastic bio-based cloth base, which is impregnated with water-based polyurethane / halogen-free water-based flame retardant impregnation material, extruded, and dried to obtain a bio-based fabric with flame-retardant properties. Substrate, standby; wherein the preferred formula of water-based polyurethane / halogen-free water-based flame retardant impregnating material is as follows:

[0046]

[0047] 2. Through the release paper film transfer method, the halogen-free flame-retardant high-solid polyurethane material is laminated to obtain a halogen-free flame-retardant high-solid polyurethane film, and then the release paper is peeled off to obtain a high-solid film with flame-retardant properties; among them, the halogen-free flame-retardant The preferred formula of burning high solid polyurethane material is as follows:

[0048]

[0049] 3. Composite the bio-based base material wi...

Embodiment 2

[0051] 1. Co-spinning bio-based raw materials and nylon to form a bio-based high-strength, high-elastic bio-based cloth base, which is impregnated with water-based polyurethane / halogen-free water-based flame retardant impregnation material, extruded, and dried to obtain a bio-based fabric with flame-retardant properties. Substrate. Among them, the preferred formula of water-based polyurethane / halogen-free water-based flame retardant impregnation material is as follows:

[0052]

[0053] 2. Through the release paper film transfer method, the halogen-free flame-retardant high-solid polyurethane material is laminated to obtain a halogen-free flame-retardant high-solid polyurethane film, and then the release paper is peeled off to obtain a high-solid film with flame-retardant properties; among them, the halogen-free flame-retardant The preferred formula of burning high solid polyurethane material is as follows:

[0054]

[0055] 3. Composite the bio-based base material with...

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