WO2023221226A1

WO2023221226A1 - Environmentally-friendly water-based synthetic leather and production process therefor

Info

Publication number: WO2023221226A1
Application number: PCT/CN2022/099651
Authority: WO
Inventors: 郑嗣铣
Original assignee: 浙江嘉柯新材料科技有限公司
Priority date: 2022-05-18
Filing date: 2022-08-20
Publication date: 2023-11-23
Also published as: CN114875686A

Abstract

An environmentally-friendly water-based synthetic leather and a production process therefor. The environmentally-friendly water-based synthetic leather sequentially comprises a surface layer, a middle layer and a base layer from outside to inside, wherein the surface layer is obtained by coating a water-based slag surface layer slurry; the middle layer is a one-layer bonding layer or a two-layer foaming layer or a one-layer foaming layer and a one-layer bonding layer, the foaming layer being obtained by coating a water-based slag foaming layer; and the bonding layer is obtained by coating a water-based slag bonding layer slurry, the water-based residue being prepared by subjecting coffee residues, dry flower residues and other domestic waste residues to low-temperature liquid nitrogen grinding, then adding a water-based polyurethane resin and then subjecting the mixture to high-speed shearing dispersion. By means of the environmentally-friendly water-based synthetic leather, waste slag in life can be effectively and repeatedly used, and the environmentally-friendly water-based synthetic leather has no potential chemical harm to a user.

Description

An environmentally friendly water-based synthetic leather and its production process

Technical field

The invention relates to the technical field of synthetic leather, and in particular to an environmentally friendly water-based synthetic leather and its production process.

Background technique

As a composite material that can replace animal leather, synthetic leather is superior to animal leather in terms of durability and cost-effectiveness, making it highly acceptable in the consumer market and widely used in the production of shoes, boots, clothing, and bags. and balls etc. The traditional solvent-based synthetic leather manufacturing process cannot avoid organic solvent pollution, and its finished products have potential chemical hazards to users. As the market demand for environmentally friendly synthetic leather products increases, water-based synthetic leather manufacturing technology and product performance have made great progress. As an important part of green and environmentally friendly synthetic leather, its market share has been increasing in recent years.

At the same time, waste generated in daily life such as coffee grounds, sugarcane bagasse, glass residue, discarded shells and other wastes have brought a huge burden to urban cleaning. With the continuous improvement of residents’ living standards and consumption power, these waste materials are also welcome. Here comes explosive growth.

technical problem

In view of the shortcomings of the existing technology, one of the purposes of the present invention is to provide an environmentally friendly water-based synthetic leather made by reusing wastes such as coffee grounds, sugarcane bagasse, glass residue, and discarded shells produced in daily life.

Technical solutions

The above technical objectives of the present invention are achieved through the following technical solutions.

An environmentally friendly water-based synthetic leather consists of a surface layer, a middle layer and a base layer from the outside to the inside.

The surface layer is formed by coating with aqueous slag surface layer slurry.

The middle layer is one layer of adhesive layer or two layers of foam layer or one layer of foam layer and one layer of adhesive layer.

The foaming layer is formed by coating with an aqueous slag foaming layer.

The adhesive layer is formed by coating with aqueous slag adhesive layer slurry.

The water-based slag surface layer slurry configuration includes the following components: 40-60 parts of water-based polyurethane emulsion, 0.2-1 part of defoaming agent, 10-80 parts of solid waste slag, 0.5-2 parts of bactericide, and antifungal agent 0.5-2 parts, cross-linking agent 0.2-3 parts, wetting agent 1-2 parts, emulsifier 0.1-3 parts, thickener 2-3 parts.

The water-based slag foaming layer slurry configuration includes the following components: 40-60 parts of water-based polyurethane emulsion, 3-6 parts of foaming agent, 10-80 parts of solid waste slag, 0.5-2 parts of bactericide, and anti-mold 0.5-2 parts of agent, 0.2-3 parts of cross-linking agent, 0.1-3 parts of emulsifier, and 2-3 parts of thickener.

The water-based slag adhesive layer slurry configuration includes the following components: 40-60 parts of water-based polyurethane emulsion, 10-80 parts of solid waste slag, 0.5-2 parts of fungicide, 0.5-2 parts of antifungal agent, cross-linking 0.2-3 parts of agent, 1-2 parts of wetting agent, 0.1-3 parts of emulsifier, and 2-3 parts of thickener.

The particle size of the solid waste slag is 0.1um-5um.

Preferably, the base layer is base cloth or water-based slag material.

Preferably, the base fabric is obtained by immersing in a dipping tank filled with impregnating liquid and then extruding, ironing, and drying; the impregnating liquid is one or more of a fluorine-free waterproofing agent, a salt solution, and an acid solution. Kind of compound.

Preferably, the water-based slag bass is a water-based slag dry process or an aqueous slag wet process.

Preferably, the water-based slag dry method bass is obtained by impregnating the base cloth in a dipping tank filled with impregnating liquid, coating the water-based slag foaming layer slurry, drying and winding; the impregnating liquid is free of One or more combinations of fluorine waterproofing agent, salt solution, and acid solution.

Preferably, the water-based slag wet-method bass is made of a base cloth that is impregnated in a dipping tank filled with impregnating liquid, then coated with the water-based slag foaming layer slurry, solidified in a coagulating tank containing coagulating liquid, and then dried. It is obtained by drying, washing, drying and winding; the impregnation liquid is one or more combinations of surfactant, fluorine-free waterproofing agent, salt solution, and acid solution.

Preferably, the aqueous polyurethane emulsion is one or more combinations of anionic aromatic aqueous polyurethane emulsion, anionic aliphatic aqueous polyurethane emulsion, cationic aromatic anionic or cationic aliphatic aqueous polyurethane emulsion.

The defoaming agent is a silicone defoaming agent or a mineral oil defoaming agent.

The foaming agent is one or more combinations of silicone modified foaming agent, sodium dodecyl benzene sulfonate foaming agent, and stearate foaming agent.

The fungicide is an isothiazolinone fungicide.

The antifungal agent is sodium o-phenylphenol antifungal agent.

The cross-linking agent is one or more combinations of an aziridine cross-linking agent, a polycarbodiimide cross-linking agent, and a blocked isocyanate cross-linking agent.

The wetting agent is a silicone wetting agent or an acetylene glycol wetting agent.

The emulsifier is a nonionic emulsifier or an anionic emulsifier.

The thickener is one or more combinations of polyurethane associative thickener, acrylate alkali swelling thickener, and cellulose thickener.

In view of the shortcomings of the existing technology, another object of the present invention is to provide an environmentally friendly water-based synthetic leather production process.

Include the following steps.

S1: Grind the solid waste slag through a grinder at minus 20-30 degrees Celsius until the particle size of the solid waste slag is 0.1um-5um.

S2: Prepare the water-based slag surface layer slurry. Mix 40-60 parts of water-based polyurethane emulsion, 0.2-1 part of defoaming agent, 0.5-2 parts of fungicide, 0.5-2 parts of antifungal agent and cross-linking agent according to the mass fraction. 0.2-3 parts, 1-2 parts of wetting agent, 0.1-3 parts of emulsifier, disperse at 400-600r/min for 30 minutes, then add 10-80 parts of solid waste slag, add thickener to adjust the slurry viscosity to 1000- 5000cps to obtain the water-based slag surface layer slurry.

S3: Prepare the water-based slag foam layer slurry. According to the mass fraction, mix 40-60 parts of water-based polyurethane emulsion, 3-6 parts of foaming agent, 0.5-2 parts of fungicide, 0.5-2 parts of antifungal agent, and cross-linking agent. Disperse 0.2-3 parts and 0.1-3 parts of emulsifier at 400-600r/min for 30 minutes, then add 10-80 parts of solid waste slag, add thickener to adjust the slurry viscosity to 5000-20000cps, and obtain water-based slag foaming layer of slurry.

S4: Prepare the water-based slag adhesive layer slurry. According to the mass fraction, mix 40-60 parts of water-based polyurethane emulsion, 0.5-2 parts of fungicide, 0.5-2 parts of antifungal agent, 0.2-3 parts of cross-linking agent, and wetting agent. 1-2 parts and 0.1-3 parts of emulsifier are dispersed at 400-600r/min for 30 minutes, then 10-80 parts of solid waste slag are added, and a thickener is added to adjust the slurry viscosity to 10000-50000cps to obtain water-based slag bonding layer of slurry.

S5: Dip the base fabric in a dipping tank filled with dipping liquid and then squeeze, iron and dry it.

S6: After the base fabric is immersed in a dipping tank filled with impregnation liquid, the water-based slag foaming layer slurry is coated, dried and rolled up to form a water-based slag dry method base.

S7: After dipping the base fabric in a dipping tank filled with impregnating liquid, apply the water-based slag foam layer slurry, perform coagulation treatment in the coagulating tank containing coagulating liquid, then enter the oven to dry, then wash, and then dry Dried and rolled up to form a water-based slag wet bass.

S8: Coat the water-based slag surface layer slurry obtained in step S2 on the release paper and dry it, then apply the water-based slag adhesive layer slurry obtained in step S4, and then laminate the base fabric or the slurry obtained in step S5. The base fabric or the water-based slag dry-process leather is obtained in step S6 or the water-based slag wet-process leather is obtained in step S7, and is dried to obtain environmentally friendly water-based synthetic leather.

Alternatively, apply the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, then pass the aqueous slag foam layer slurry obtained in step S3 into the foaming machine, and adjust the foaming density to 0.1 -1.0kg/L, apply it on the surface layer and dry it, then repeatedly apply the water-based slag foaming layer slurry, and then attach it to the base fabric or the base fabric obtained in step S5 or the water-based slag dry method obtained in step S6 or step S7 to obtain the water-based slag wet method, and dry it to obtain environmentally friendly water-based synthetic leather.

Alternatively, apply the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, then pass the aqueous slag foam layer slurry obtained in step S3 into the foaming machine, and adjust the foaming density to 0.1 -1.0 kg/L, apply it on the surface layer and dry it, then apply the water-based slag adhesive layer, and then attach it to the base fabric or the base fabric obtained in step S5 or the water-based slag dry method obtained in step S6 or the base fabric obtained in step S7 The water-based slag is wet-processed and dried to obtain environmentally friendly water-based synthetic leather.

Preferably, the temperature of the immersing liquid in step S7 is 15~35°C, and the temperature of the coagulating liquid is 15~35°C.

Preferably, in steps S2, S3, and S4, after adding a thickening agent to adjust the slurry viscosity, the mixture needs to be dispersed at a rotation speed of 4000-5000 r/min for 20 minutes.

Since coffee grounds, sugarcane bagasse, dried flower residues and other plant wastes themselves contain a certain amount of oil, the ground waste residues are easily re-agglomerated after being added to the water-based polyurethane slurry, resulting in flatness during the slurry coating process during continuous production. Gradually reduce. Through the introduction of emulsifiers, the present invention firstly adjusts the dispersion of the slurry system for the oily waste residue components, ensuring that the waste residue powder can maintain good dispersion in a short time; secondly, it improves the polyurethane particles in the water-based polyurethane resin. The excellent dispersion enables the resin to be stirred in a high-speed shear environment, thereby solving the problem of the slag working slurry being unable to disperse at high speed and ensuring the stability of continuous production.

beneficial effects

One of the advantages of the present invention is that its products can effectively reuse waste slag in daily life by using solid waste slag as filler in the manufacturing process of water-based synthetic leather; the second advantage of the present invention is that some waste slag has Special pore structures with high specific surface areas, such as coffee grounds, dried flower residues and other plant wastes added as fillers, can provide breathability closer to the dermis; the third advantage of the present invention is the use of water-based polyurethane emulsion and related water-based additives as the filler. The main raw material for the manufacture of synthetic leather does not contain DMF in the corresponding products, which can completely solve the problem of chemical pollution caused by DMF in solvent-based synthetic leather currently on the market. It also eliminates the DMF recycling process. The entire production process saves energy and reduces consumption, and the product is environmentally friendly. High; the fourth advantage of the present invention is that this type of waste itself has a natural fragrance, which can give the synthetic leather a certain fragrance.

Best Mode of Carrying Out the Invention

This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contribution as needed after reading this specification. However, as long as the rights of the present invention are All requirements are protected by patent law.

There are many embodiments of the present invention, and some embodiments will be described below. The following descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the patentable scope of the present invention shall fall within the scope of the present invention.

The solid waste residues in the present invention include, but are not limited to, crushable solid wastes such as coffee grounds, sugarcane bagasse, waste glass, waste shells, waste dried flowers, etc.

The release paper is a commonly used profile in the production process of water-based synthetic leather, so it will not be described in detail.

Embodiment 1: An environmentally friendly water-based synthetic leather, including a surface layer, an intermediate layer and a base layer in order from the outside to the inside; the middle layer is an adhesive layer; the base layer is a base cloth, and the surface layer It is formed by coating with water-based slag surface layer slurry; the adhesive layer is formed by coating with water-based slag adhesive layer slurry; the water-based slag surface layer slurry configuration includes the following components: anionic aliphatic water-based polyurethane 50 parts of emulsion, 0.5 parts of silicone defoaming agent, 1.5 parts of silicone wetting agent, 2.1 parts of emulsifier, 30 parts of coffee grounds, 1.6 parts of isothiazolinone fungicide, 1.2 parts of sodium o-phenylphenolate antifungal agent, 2 parts of aziridine cross-linking agent, 2.5 parts of cellulose thickener; the water-based slag adhesive layer slurry configuration includes the following components: 50 parts of anionic aliphatic water-based polyurethane emulsion, 20 parts of coffee grounds, isothiazoline 1.6 parts of ketone fungicide, 1.2 parts of sodium o-phenylphenol antifungal agent, 2 parts of aziridine cross-linking agent, 1.5 parts of silicone wetting agent, 2.1 parts of emulsifier, and 2.5 parts of cellulose thickener; the coffee The particle size of the slag is 2um.

The production process of this embodiment includes the following steps.

S1: Grind the solid waste slag through a grinder until the particle size of the solid waste slag is 2um.

S2: Prepare the water-based slag surface layer slurry. According to the mass fraction, mix 50 parts of anionic aliphatic water-based polyurethane emulsion, 1.5 parts of silicone wetting agent, 0.8 parts of silicone defoaming agent, 1.6 parts of isothiazolinone fungicide, and 1.2 parts of sodium phenylphenolate antifungal agent, 2 parts of aziridine cross-linking agent, 2.1 parts of emulsifier, 30 parts of coffee grounds, disperse at 500r/min for 30 minutes, then add 2.5 parts of cellulose thickener to adjust the slurry viscosity 2500cps, and then dispersed at 4500r/min for 20min.

S3: Prepare the water-based slag adhesive layer slurry. According to the mass fraction, add 50 parts of anionic aliphatic water-based polyurethane emulsion, 1.6 parts of isothiazolinone fungicide, 1.2 parts of sodium o-phenylphenolate antifungal agent, and aziridine cross-linking 2 parts of agent, 1.5 parts of silicone wetting agent, 2.1 parts of emulsifier, and 20 parts of coffee grounds were dispersed at 500r/min for 30 minutes, then 2.5 parts of cellulose thickener were added, and the slurry viscosity was adjusted to 35000cps, and then the slurry was dispersed at 4500r/min. The speed is dispersed for 20 minutes.

S4: Coat the water-based slag surface layer slurry obtained in step S2 on the release paper and dry it, apply the water-based slag adhesive layer slurry obtained in step S3, and then attach it to the base fabric and dry it to obtain an environmentally friendly type Water-based synthetic leather.

Embodiment 2: An environmentally friendly water-based synthetic leather, including a surface layer, an intermediate layer and a base layer in order from the outside to the inside; the middle layer is a two-layer foam layer; the base layer is a base fabric, and the surface layer It is formed by coating with aqueous slag surface layer slurry; the foaming layer is formed by coating with aqueous slag foaming layer; the aqueous slag surface layer slurry configuration includes the following components: anionic aliphatic water-based polyurethane emulsion 50 parts, 0.8 parts of silicone defoaming agent, 30 parts of coffee grounds, 1.6 parts of isothiazolinone fungicide, 1.2 parts of sodium o-phenylphenol antifungal agent, 2 parts of aziridine cross-linking agent, 1.5 parts of silicone wetting agent parts, emulsifier 2.1 parts, cellulose thickener 3.0 parts; the water-based slag foaming layer slurry configuration includes the following components: 50 parts anionic aliphatic water-based polyurethane emulsion, 5 parts silicone modified foaming agent, 30 parts of coffee grounds, 1.8 parts of isothiazolinone fungicide, 1.5 parts of sodium o-phenylphenol antifungal agent, 2 parts of aziridine cross-linking agent, 2.5 parts of cellulose thickener, and 2.1 parts of emulsifier; the coffee The particle size of the slag is 2um.

The production process of this embodiment includes the following steps.

S2: Prepare the water-based slag surface layer slurry. According to the mass fraction, add 50 parts of anionic aliphatic water-based polyurethane emulsion, 0.8 parts of silicone defoaming agent, 1.6 parts of isothiazolinone fungicide, and 1.2 parts of sodium o-phenylphenolate fungicide. parts, 2 parts of aziridine cross-linking agent, 1.5 parts of silicone wetting agent, 2.1 parts of emulsifier, 30 parts of coffee grounds, disperse at 500r/min for 30 minutes, then add cellulose thickener 3.0, and adjust the slurry viscosity to 3000cps , and then dispersed at 4500r/min for 20min.

S3: Prepare the water-based slag foaming layer slurry. According to the mass fraction, add 50 parts of anionic aliphatic water-based polyurethane emulsion, 5 parts of silicone modified foaming agent, 1.8 parts of isothiazolinone fungicide, and sodium o-phenylphenolate anti-bacterial agent. 1.5 parts of mildew agent, 2 parts of aziridine cross-linking agent, 2.1 parts of emulsifier, and 30 parts of coffee grounds, disperse at 500r/min for 30 minutes, then add 2.5 parts of cellulose thickener, adjust the slurry viscosity to 25000cps, and then Disperse at 4500r/min for 20min.

S4: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it. Pass the aqueous slag foam layer slurry obtained in step S3 into the foaming machine and adjust the foaming density to 0.8kg/ L, apply it on the surface layer and dry it. After drying, apply the water-based slag foaming layer slurry repeatedly, then attach it to the base fabric and dry it to obtain an environmentally friendly water-based synthetic leather.

Embodiment 3: An environmentally friendly water-based synthetic leather, including a surface layer, an intermediate layer and a base layer from the outside to the inside; the middle layer is a foaming layer and an adhesive layer; the base layer is Base fabric, the surface layer is formed by coating with water-based slag surface layer slurry; the water-based slag surface layer slurry configuration includes the following components: 40 parts of anionic aliphatic water-based polyurethane emulsion, 0.8 parts of silicone defoamer , 50 parts of coffee grounds, 1.6 parts of isothiazolinone fungicide, 1.2 parts of sodium o-phenylphenol antifungal agent, 2 parts of aziridine cross-linking agent, 1.5 parts of silicone wetting agent, 3.0 emulsifier, cellulose enhancer 2.5 parts of thickener; the foaming layer is formed by coating the aqueous slag foaming layer; the slurry configuration of the aqueous slag foaming layer includes the following components: 50 parts of anionic aliphatic water-based polyurethane emulsion, silicone modification 5 parts of foaming agent, 30 parts of coffee grounds, 1.8 parts of isothiazolinone fungicide, 1.5 parts of sodium o-phenylphenol antifungal agent, 2 parts of aziridine cross-linking agent, 2.8 parts of emulsifier, 2.5 parts of cellulose thickener parts; the adhesive layer is formed by coating with water-based slag adhesive layer slurry; the water-based slag adhesive layer slurry configuration includes the following components: 50 parts of anionic aliphatic water-based polyurethane emulsion, 20 parts of coffee grounds, 1.6 parts of isothiazolinone fungicide, 1.2 parts of sodium o-phenylphenol antifungal agent, 2 parts of aziridine cross-linking agent, 1.5 parts of silicone wetting agent, 3.0 parts of emulsifier, 2.5 parts of cellulose thickener; all The particle size of the coffee grounds is 2um.

The production process of this embodiment includes the following steps.

S2: Prepare the water-based slag surface layer slurry. According to the mass fraction, add 40 parts of anionic aliphatic water-based polyurethane emulsion, 0.8 parts of silicone defoaming agent, 1.6 parts of isothiazolinone fungicide, and 1.2 parts of sodium o-phenylphenolate fungicide. parts, 2 parts of aziridine cross-linking agent, 1.5 parts of silicone wetting agent, 3.0 parts of emulsifier, 30 parts of coffee grounds, disperse at 500r/min for 30 minutes, then add 2.5 parts of cellulose thickener, and adjust the slurry viscosity to 2500cps , and then dispersed at 4500r/min for 20min.

S3: Prepare the water-based slag foaming layer slurry. According to the mass fraction, add 50 parts of anionic aliphatic water-based polyurethane emulsion, 5 parts of silicone modified foaming agent, 1.8 parts of isothiazolinone fungicide, and sodium o-phenylphenolate anti-bacterial agent. 1.5 parts of mildew agent, 2 parts of aziridine cross-linking agent, 2.8 parts of emulsifier, and 30 parts of coffee grounds were dispersed at 500r/min for 30 minutes, then 2.5 parts of cellulose thickener were added, and the slurry viscosity was adjusted to 25000cps, and then at 4500r/min. min speed dispersed for 20min.

S4: Prepare the water-based slag adhesive layer slurry. According to the mass fraction, add 50 parts of anionic aliphatic water-based polyurethane emulsion, 1.6 parts of isothiazolinone fungicide, 1.2 parts of sodium o-phenylphenolate mildewproofing agent, and aziridine cross-linking 2 parts of agent, 1.5 parts of silicone wetting agent, 3.0 parts of emulsifier, and 20 parts of coffee grounds were dispersed at 500r/min for 30 minutes, then 2.5 parts of cellulose thickener were added, and the slurry viscosity was adjusted to 35000cps, and then rotated at 4500r/min. Disperse for 20 minutes.

S5: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, then pass the aqueous slag foam layer slurry obtained in step S3 into the foaming machine, and adjust the foaming density to 0.8kg /L, apply it on the surface layer and dry it, then apply a water-based slag adhesive layer, then attach it to the base fabric and dry it to obtain an environmentally friendly water-based synthetic leather.

Embodiment 4: The difference from Embodiment 1 is that: the base fabric is obtained by immersing in a dipping tank filled with impregnating liquid and then extruding, ironing, and drying; the impregnating liquid is a 5% Nacl solution and no Fluorine waterproofing agent 1:1 configuration.

The difference between this embodiment and the production process of Embodiment 1 is that a step is added before step S4 of Embodiment 1: the base fabric is immersed in a dipping tank filled with dipping liquid and then squeezed, ironed, and dried.

Embodiment 5: The difference from Embodiment 2 is that: the base fabric is obtained by immersing in a dipping tank filled with impregnating liquid and then extruding, ironing, and drying; the impregnating liquid is a 5% Nacl solution and no Fluorine waterproofing agent 1:1 configuration.

The difference between this embodiment and the production process of Embodiment 2 is that a step is added before step S4 of Embodiment 2: the base fabric is immersed in a dipping tank filled with impregnating liquid, then squeezed, ironed, and dried.

Example 6: The difference from Example 3 is that: the base fabric is obtained by immersing in a dipping tank filled with impregnating liquid and then extruding, ironing, and drying; the impregnating liquid is a 5% Nacl solution and no Fluorine waterproofing agent 1:1 configuration.

The difference between this embodiment and the production process of Embodiment 3 is that a step is added before step S5 of Embodiment 3: the base fabric is immersed in a dipping tank filled with dipping liquid, then squeezed, ironed, and dried.

Embodiment 7: The difference from Embodiment 1 is that: the base layer is a water-based slag dry-process bass; the aqueous slag dry-process bass is made of a base cloth that is impregnated in a dipping tank containing an impregnating liquid, and then coated and foamed The water-based slag foam layer slurry with a density of 0.8kg/L is obtained by drying and winding.

The difference between this embodiment and the production process of Embodiment 1 is that: a step is added before step S4 of Embodiment 1: after dipping the base fabric in a dipping tank filled with dipping liquid, apply 0.8kg/L aqueous slag to foam A layer of slurry is dried and rolled up to form a water-based slag dry bass. In step S4, the laminating base fabric is changed to laminating the water-based slag dry method, and is dried to obtain environmentally friendly water-based synthetic leather.

Embodiment 8: The difference from Embodiment 2 is that: the base layer is a water-based slag dry-process bass; the aqueous slag dry-process bass is made of a base cloth that is impregnated in a dipping tank containing an impregnating liquid, and then coated and foamed The water-based slag foam layer slurry with a density of 0.8kg/L is obtained by drying and winding.

The difference between this embodiment and the production process of Embodiment 2 is that a step is added before step S4 of Embodiment 2: after the base fabric is immersed in a dipping tank filled with impregnating liquid, it is coated with a water-based foaming density of 0.8kg/L. The slag foam layer slurry is dried and rolled up to form a water-based slag dry method bass. In step S4, the laminating base fabric is changed to laminating the water-based slag dry method, and is dried to obtain environmentally friendly water-based synthetic leather.

Embodiment 9: The difference from Embodiment 3 is that: the base layer is a water-based slag dry-process bass; the aqueous slag dry-process bass is made of a base cloth that is impregnated in a dipping tank containing an impregnating liquid, and then coated and foamed The water-based slag foam layer slurry with a density of 0.8kg/L is obtained by drying and winding.

The difference between this embodiment and the production process of Embodiment 3 is that a step is added before step S5 of Embodiment 3: after the base fabric is immersed in a dipping tank filled with impregnating liquid, it is coated with a water-based foaming density of 0.8kg/L. The slag foam layer slurry is dried and rolled up to form a water-based slag dry method bass. In step S5, the laminating base fabric is changed to laminating the water-based slag dry method, and is dried to obtain environmentally friendly water-based synthetic leather.

Embodiment 10: The difference from Embodiment 1 is that: the base layer is a water-based slag wet method base; the aqueous slag wet method base is made of a base cloth that is impregnated in a dipping tank containing an impregnating liquid, and then coated and foamed The aqueous slag foam layer slurry with a density of 0.8kg/L is coagulated in a coagulation tank containing coagulation liquid, then dried, washed, dried and rolled up; the impregnation liquid is a 5% Nacl solution Configured 1:1 with fluorine-free waterproofing agent.

The difference between this embodiment and the production process of Embodiment 1 is that: a step is added before step S4 of Embodiment 1: after dipping the base fabric in a dipping tank filled with impregnating liquid, coat it with a water-based foaming density of 0.8kg/L The slag foam layer slurry is coagulated in a coagulation tank containing coagulation liquid, then dried in an oven, washed, and then dried and rolled up to form a water-based slag wet bass. The temperature of the impregnation liquid is 30°C, and the temperature of the coagulation liquid is 20°C. In step S4, the laminating base fabric is changed to laminating the water-based slag wet method base, and is dried to obtain an environmentally friendly water-based synthetic leather.

Embodiment 11: The difference from Example 2 is that: the base layer is a water-based slag wet method base; the aqueous slag wet method base is made of a base cloth that is impregnated in a dipping tank containing an impregnating liquid, and then coated and foamed The aqueous slag foam layer slurry with a density of 0.8kg/L is coagulated in a coagulation tank containing coagulation liquid, then dried, washed, dried and rolled up; the impregnation liquid is a 5% Nacl solution Configured 1:1 with fluorine-free waterproofing agent.

The difference between this embodiment and the production process of Embodiment 2 is that a step is added before step S4 of Embodiment 2: after the base fabric is immersed in a dipping tank filled with impregnating liquid, it is coated with a water-based foaming density of 0.8kg/L. The slag foam layer slurry is coagulated in a coagulation tank containing coagulation liquid, then dried in an oven, washed, and then dried and rolled up to form a water-based slag wet bass. The temperature of the impregnation liquid is 30°C, and the temperature of the coagulation liquid is 20°C. In step S4, the laminating base fabric is changed to laminating the water-based slag wet method base, and is dried to obtain an environmentally friendly water-based synthetic leather.

Embodiment 12: The difference from Embodiment 3 is that: the base layer is a water-based slag wet method base; the aqueous slag wet method base is made of a base cloth that is impregnated in a dipping tank containing an impregnating liquid, and then coated and foamed The aqueous slag foam layer slurry with a density of 0.8kg/L is coagulated in a coagulation tank containing coagulation liquid, then dried, washed, dried and rolled up; the impregnation liquid is a 5% Nacl solution Configured 1:1 with fluorine-free waterproofing agent.

The difference between this embodiment and the production process of Embodiment 3 is that a step is added before step S5 of Embodiment 3: after the base fabric is immersed in a dipping tank filled with impregnating liquid, it is coated with a water-based foaming density of 0.8kg/L. The slag foam layer slurry is coagulated in a coagulation tank containing coagulation liquid, then dried in an oven, washed, and then dried and rolled up to form a water-based slag wet bass. The temperature of the impregnation liquid is 30°C, and the temperature of the coagulation liquid is 20°C. In step S4, the laminating base fabric is changed to laminating the water-based slag wet method base, and is dried to obtain an environmentally friendly water-based synthetic leather.

Example 13: The difference from Example 2 is that the coffee grounds are replaced by sugarcane bagasse, and the rest remain unchanged.

Example 14: The difference from Example 5 is that the coffee grounds are replaced with sugarcane bagasse, and the rest remain unchanged.

Example 15: The difference from Example 8 is that the coffee grounds are replaced with sugarcane bagasse, and the rest remain unchanged.

Example 16: The difference from Example 11 is that the coffee grounds are replaced by sugarcane bagasse, and the rest remain unchanged.

Example 17: The difference from Example 2 is that the coffee grounds are replaced with glass grounds, and the rest remain unchanged.

Example 18: The difference from Example 5 is that the coffee grounds are replaced with glass grounds, and the rest remain unchanged.

Example 19: The difference from Example 8 is that the coffee grounds are replaced with glass grounds, and the rest remain unchanged.

Example 20: The difference from Example 11 is that the coffee grounds are replaced with glass grounds, and the rest remain unchanged.

Example 21: The difference from Example 2 is that the coffee grounds are replaced with dried flower grounds, and the rest remain unchanged.

Example 22: The difference from Example 5 is that the coffee grounds are replaced with dried flower grounds, and the rest remain unchanged.

Example 23: The difference from Example 8 is that the coffee grounds are replaced with dried flower grounds, and the rest remain unchanged.

Example 24: The difference from Example 11 is that the coffee grounds are replaced with dried flower grounds, and the rest remain unchanged.

Example 25: The difference from Example 2 is that the coffee grounds are replaced with ore powder, and the rest remain unchanged.

Example 26: The difference from Example 5 is that the coffee grounds are replaced with ore powder, and the rest remain unchanged.

Example 27: The difference from Example 8 is that the coffee grounds are replaced with ore powder, and the rest remain unchanged.

Example 28: The difference from Example 11 is that the coffee grounds are replaced with ore powder, and the rest remain unchanged.

Example 29: The difference from Example 1 is that the particle size of the coffee grounds is 1um, and the rest remain unchanged.

Example 30: The difference from Example 4 is that the particle size of the coffee grounds is 1um, and the rest remain unchanged.

Example 31: The difference from Example 7 is that the particle size of the coffee grounds is 1um, and the rest remain unchanged.

Example 32: The difference from Example 10 is that the particle size of the coffee grounds is 1um, and the rest remain unchanged.

Embodiment 33 is different from Embodiment 2 in that: Step S4: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, and foam the aqueous slag layer slurry obtained in step S3. The material is passed into the foaming machine, the foaming density is adjusted to 0.4kg/L, coated on the surface layer and dried. After drying, the water-based slag foaming layer slurry is repeatedly applied, and then laminated to the base fabric and dried to obtain Environmentally friendly water-based synthetic leather.

Embodiment 34 is different from Embodiment 2 in that: Step S4: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, and foam the aqueous slag layer slurry obtained in step S3. The material is passed into the foaming machine, the foaming density is adjusted to 0.6kg/L, coated on the surface layer and dried. After drying, the water-based slag foaming layer slurry is repeatedly applied, and then laminated to the base fabric and dried to obtain Environmentally friendly water-based synthetic leather.

Embodiment 35 is different from Embodiment 5 in that: Step S4: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, and foam the aqueous slag layer slurry obtained in step S3. The material is passed into the foaming machine, the foaming density is adjusted to 0.4kg/L, coated on the surface layer and dried. After drying, the water-based slag foaming layer slurry is repeatedly applied, and then laminated to the base fabric and dried to obtain Environmentally friendly water-based synthetic leather.

Embodiment 36 is different from Embodiment 5 in that: Step S4: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, and foam the aqueous slag layer slurry obtained in step S3. The material is passed into the foaming machine, the foaming density is adjusted to 0.6kg/L, coated on the surface layer and dried. After drying, the water-based slag foaming layer slurry is repeatedly applied, and then laminated to the base fabric and dried to obtain Environmentally friendly water-based synthetic leather.

Embodiment 37 is different from Embodiment 13 in that: Step S4: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, and foam the aqueous slag surface layer slurry obtained in step S3. The material is passed into the foaming machine, the foaming density is adjusted to 0.4kg/L, coated on the surface layer and dried. After drying, the water-based slag foaming layer slurry is repeatedly applied, and then laminated to the base fabric and dried to obtain Environmentally friendly water-based synthetic leather.

Embodiment 38 is different from Embodiment 13 in that: Step S4: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, and foam the aqueous slag layer slurry obtained in step S3. The material is passed into the foaming machine, the foaming density is adjusted to 0.6kg/L, coated on the surface layer and dried. After drying, the water-based slag foaming layer slurry is repeatedly applied, and then laminated to the base fabric and dried to obtain Environmentally friendly water-based synthetic leather.

Embodiment 39 is different from Embodiment 14 in that: Step S4: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, and foam the aqueous slag layer slurry obtained in step S3. The material is passed into the foaming machine, the foaming density is adjusted to 0.4kg/L, coated on the surface layer and dried. After drying, the water-based slag foaming layer slurry is repeatedly applied, and then laminated to the base fabric and dried to obtain Environmentally friendly water-based synthetic leather.

Embodiment 40 is different from Embodiment 14 in that: Step S4: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, and foam the aqueous slag layer slurry obtained in step S3. The material is passed into the foaming machine, the foaming density is adjusted to 0.6kg/L, coated on the surface layer and dried. After drying, the water-based slag foaming layer slurry is repeatedly applied, and then laminated to the base fabric and dried to obtain Environmentally friendly water-based synthetic leather.

Embodiment 41 is different from Embodiment 25 in that: Step S4: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, and foam the aqueous slag layer slurry obtained in step S3. The material is passed into the foaming machine, the foaming density is adjusted to 0.5kg/L, coated on the surface layer and dried. After drying, the water-based slag foaming layer slurry is repeatedly applied, and then laminated to the base fabric and dried to obtain Environmentally friendly water-based synthetic leather.

Embodiment 42 is different from Embodiment 25 in that: Step S4: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, and foam the aqueous slag layer slurry obtained in step S3. The material is passed into the foaming machine, the foaming density is adjusted to 0.3kg/L, coated on the surface layer and dried. After drying, the water-based slag foaming layer slurry is repeatedly applied, and then laminated to the base fabric and dried to obtain Environmentally friendly water-based synthetic leather.

Embodiment 43 is different from Embodiment 26 in that: Step S4: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, and foam the aqueous slag layer slurry obtained in step S3. The material is passed into the foaming machine, the foaming density is adjusted to 0.7kg/L, coated on the surface layer and dried. After drying, the water-based slag foaming layer slurry is repeatedly applied, and then laminated to the base fabric and dried to obtain Environmentally friendly water-based synthetic leather.

Embodiment 44 is different from Embodiment 26 in that: Step S4: Coat the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, and foam the aqueous slag layer slurry obtained in step S3. The material is passed into the foaming machine, the foaming density is adjusted to 0.4kg/L, coated on the surface layer and dried. After drying, the water-based slag foaming layer slurry is repeatedly applied, and then laminated to the base fabric and dried to obtain Environmentally friendly water-based synthetic leather.

The environmentally friendly water-based synthetic leather and some synthetic leather samples of Examples 1-44 of the present invention were tested. The test contents were surface color fastness, Martindale abrasion resistance, peeling load, constant temperature resistance to bending, and air and moisture permeability. The above tests The content covers the basic properties of synthetic leather products for clothing and soft bags.

The test results are shown in the table below.

.

It can be seen from the above example data that by using solid waste slag to replace fillers and other materials in the prior art, the product can fully achieve the performance of water-based clothing and luggage synthetic leather, and even some examples and some performance indicators exceed the existing ones. Water-based synthetic leather.

In the present invention, different solid waste residue materials have an impact on breathability and moisture permeability. Some waste residue materials, such as coffee grounds, dried flower residues, and sugarcane bagasse, are significantly better than existing solvent-based synthetic leather products and existing water-based synthetic leather products after being added. breathable and moisture permeable.

Claims

An environmentally friendly water-based synthetic leather consists of a surface layer, a middle layer and a base layer from the outside to the inside; it is characterized by:

The surface layer is formed by coating with water-based slag surface layer slurry;

The middle layer is one layer of adhesive layer or two layers of foam layer or one layer of foam layer and one layer of adhesive layer;

The foaming layer is formed by coating with an aqueous slag foaming layer;

The adhesive layer is formed by coating with water-based slag adhesive layer slurry;

The water-based slag surface layer slurry configuration includes the following components: 40-60 parts of water-based polyurethane emulsion, 0.2-1 part of defoaming agent, 10-80 parts of solid waste slag, 0.5-2 parts of bactericide, and antifungal agent 0.5-2 parts, cross-linking agent 0.2-3 parts, wetting agent 1-2 parts, emulsifier 0.1-3 parts, thickener 2-3 parts;

The water-based slag foaming layer slurry configuration includes the following components: 40-60 parts of water-based polyurethane emulsion, 3-6 parts of foaming agent, 10-80 parts of solid waste slag, 0.5-2 parts of bactericide, and anti-mold 0.5-2 parts of agent, 0.2-3 parts of cross-linking agent, 0.1-3 parts of emulsifier, and 2-3 parts of thickener;

The water-based slag adhesive layer slurry configuration includes the following components: 40-60 parts of water-based polyurethane emulsion, 10-80 parts of solid waste slag, 0.5-2 parts of fungicide, 0.5-2 parts of antifungal agent, cross-linking 0.2-3 parts of agent, 1-2 parts of wetting agent, 0.1-3 parts of emulsifier, and 2-3 parts of thickener;

The particle size of the solid waste slag is 0.1um-5um.
The environmentally friendly water-based synthetic leather according to claim 1, wherein the base layer is base cloth or water-based slag material.
The environmentally friendly water-based synthetic leather according to claim 2, characterized in that: the base fabric is obtained by dipping in a dipping tank filled with impregnation liquid and then extruding, ironing and drying; the impregnation liquid is fluorine-free. One or more combinations of waterproofing agent, salt solution, and acid solution.
The environmentally friendly water-based synthetic leather according to claim 2, characterized in that the water-based slag material is a water-based slag dry process material or a water-based slag material wet process material.
The environmentally friendly water-based synthetic leather according to claim 4, characterized in that: after the water-based slag dry-process base fabric is impregnated in a dipping tank containing an impregnating liquid, the water-based slag foaming layer slurry is coated, It is obtained by drying and winding; the impregnation liquid is one or more combinations of a fluorine-free waterproofing agent, a salt solution, and an acid solution.
The environmentally friendly water-based synthetic leather according to claim 4, characterized in that: after the water-based slag wet base fabric is impregnated in a dipping tank equipped with an impregnating liquid, the water-based slag foaming layer slurry is coated, Coagulation treatment is carried out in a coagulation tank containing coagulation liquid, followed by drying and washing, and then drying and winding; the impregnation liquid is one or more combinations of a fluorine-free waterproofing agent, a salt solution, and an acid solution. .
The environmentally friendly water-based synthetic leather according to claim 1, characterized in that:

The water-based polyurethane emulsion is one or more combinations of anionic aromatic water-based polyurethane emulsion, anionic aliphatic water-based polyurethane emulsion, cationic aromatic anionic or cationic aliphatic water-based polyurethane emulsion;

The defoaming agent is a silicone defoaming agent or a mineral oil defoaming agent;

The foaming agent is one or more combinations of silicone modified foaming agent, sodium dodecylbenzene sulfonate foaming agent, and stearate foaming agent;

The fungicide is an isothiazolinone fungicide;

The antifungal agent is sodium o-phenylphenol antifungal agent;

The cross-linking agent is one or more combinations of an aziridine cross-linking agent, a polycarbodiimide cross-linking agent, and a blocked isocyanate cross-linking agent;

The wetting agent is a silicone wetting agent or an acetylene glycol wetting agent;

The emulsifier is a nonionic emulsifier or an anionic emulsifier;

The thickener is one or more combinations of polyurethane associative thickener, acrylate alkali swelling thickener, and cellulose thickener.
A production process of environmentally friendly water-based synthetic leather as claimed in claims 1-7, characterized in that the production process includes the following steps:

S1: Grind the solid waste slag through a grinder at minus 20-30 degrees Celsius until the particle size of the solid waste slag is 0.1um-5um;

S2: Prepare the water-based slag surface layer slurry. Mix 40-60 parts of water-based polyurethane emulsion, 0.2-1 part of defoaming agent, 0.5-2 parts of fungicide, 0.5-2 parts of antifungal agent and cross-linking agent according to the mass fraction. Disperse 0.2-3 parts, 1-2 parts of wetting agent, and 0.1-3 parts of emulsifier at 400-600r/min for 30 minutes, then add 10-80 parts of solid waste slag, and add thickener to adjust the slurry viscosity to 1000-5000cps , to obtain the water-based slag surface layer slurry;

S3: Prepare the water-based slag foam layer slurry. According to the mass fraction, mix 40-60 parts of water-based polyurethane emulsion, 3-6 parts of foaming agent, 0.5-2 parts of fungicide, 0.5-2 parts of antifungal agent, and cross-linking agent. Disperse 0.2-3 parts and 0.1-3 parts of emulsifier at 400-600r/min for 30 minutes, then add 10-80 parts of solid waste slag, add thickener to adjust the slurry viscosity to 5000-20000cps, and obtain water-based slag foaming layer slurry;

S4: Prepare the water-based slag adhesive layer slurry. According to the mass fraction, mix 40-60 parts of water-based polyurethane emulsion, 0.5-2 parts of fungicide, 0.5-2 parts of antifungal agent, 0.2-3 parts of cross-linking agent, and wetting agent. 1-2 parts and 0.1-3 parts of emulsifier are dispersed at 400-600r/min for 30 minutes, then 10-80 parts of solid waste slag are added, and a thickener is added to adjust the slurry viscosity to 10000-50000cps to obtain water-based slag bonding layer slurry;

S5: Dip the base fabric in a dipping tank filled with dipping liquid and then squeeze, iron and dry it;

S6: After dipping the base fabric in a dipping tank filled with impregnating liquid, apply the water-based slag foaming layer slurry, dry and wind up to form a water-based slag dry method;

S7: After dipping the base fabric in a dipping tank filled with impregnating liquid, apply the water-based slag foam layer slurry, perform coagulation treatment in the coagulating tank containing coagulating liquid, then enter the oven to dry, then wash with water, and then dry Dried and rolled up to form aqueous slag wet bass;

S8: Coat the water-based slag surface layer slurry obtained in step S2 on the release paper and dry it, then apply the water-based slag adhesive layer slurry obtained in step S4, and then laminate the base fabric or the slurry obtained in step S5. The base cloth or the water-based slag dry-process leather is obtained in step S6 or the water-based slag wet-process leather is obtained in step S7, and is dried to obtain environmentally friendly water-based synthetic leather;

Alternatively, apply the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, then pass the aqueous slag foam layer slurry obtained in step S3 into the foaming machine, and adjust the foaming density to 0.1 -1.0kg/L, apply it on the surface layer and dry it, then repeatedly apply the water-based slag foaming layer slurry, and then attach it to the base fabric or the base fabric obtained in step S5 or the water-based slag dry method obtained in step S6 or step S7 to obtain the water-based slag wet method, and dry it to obtain environmentally friendly water-based synthetic leather;

Alternatively, apply the aqueous slag surface layer slurry obtained in step S2 on the release paper and dry it, then pass the aqueous slag foam layer slurry obtained in step S3 into the foaming machine, and adjust the foaming density to 0.1 -1.0 kg/L, apply it on the surface layer and dry it, then apply the water-based slag adhesive layer, and then laminate the base fabric or the base fabric obtained in step S5 or step S6 to obtain the water-based slag dry method base or step S7 obtains the water-based slag wet method and dries it to obtain environmentally friendly water-based synthetic leather.
An environmentally friendly water-based synthetic leather production process as claimed in claim 8, characterized in that in step S7, the temperature of the impregnation liquid is 15-35°C, and the temperature of the coagulating liquid is 15-35°C.
A production process of environmentally friendly water-based synthetic leather as claimed in claim 9, characterized in that in the steps S2, S3 and S4, after adding a thickening agent to adjust the slurry viscosity, the rotation speed is 4000-5000r/ min disperse for 20min.