CN109593452B - Water-based matte finishing agent and preparation method thereof - Google Patents
Water-based matte finishing agent and preparation method thereof Download PDFInfo
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- CN109593452B CN109593452B CN201811399229.1A CN201811399229A CN109593452B CN 109593452 B CN109593452 B CN 109593452B CN 201811399229 A CN201811399229 A CN 201811399229A CN 109593452 B CN109593452 B CN 109593452B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C11/00—Surface finishing of leather
- C14C11/003—Surface finishing of leather using macromolecular compounds
- C14C11/006—Surface finishing of leather using macromolecular compounds using polymeric products of isocyanates (or isothiocyanates) with compounds having active hydrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/085—Copper
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention relates to the technical field of high polymer coatings, and provides a water-based matte finishing agent aiming at the problem of poor hand feeling, which has the following technical scheme: the paint comprises the following components in parts by mass: 25 parts of waterborne polyurethane; 55-65 parts of pure water; 3-5 parts of conductive metal powder; 0.3-0.5 part of cobalt salt; 5-8 parts of an organic silicon hand feeling agent. A preparation method of an aqueous matte finishing agent comprises the following steps: (1) adding conductive metal powder and cobalt salt into the organic silicon hand feeling agent, and uniformly stirring to form a first premix; (2) adding waterborne polyurethane and the first premix into pure water, and uniformly stirring to form a second premix; (3) and adding a leveling agent, a defoaming agent, a thickening agent and a delustering agent into the second premix, and uniformly stirring to form the final product of the aqueous matte finishing agent. By adding the organic silicon hand feeling agent, the water-based matte finishing agent can endow the surface of the artificial leather with better soft feeling and smooth feeling, and surface lines are formed so that the artificial leather has better hand feeling and is more close to the hand feeling of natural leather products.
Description
Technical Field
The invention relates to the technical field of high polymer coatings, in particular to a water-based matte finishing agent and a preparation method thereof.
Background
Along with the social development, people have higher and higher requirements on living standard, comfortable and durable leather products are more popular, but because the leather products need to be taken from the skins of animals such as pigs and cattle, the quality and the yield of the leather products are limited by the individual difference of the animals and the reproduction speed, so that the artificial leather is produced.
Artificial leather is a plastic product that looks and feels like leather and can replace it. Usually, the fabric is used as a substrate and coated with synthetic resin and various plastic additives. Mainly comprises three types of PVC artificial leather, PU artificial leather and PU synthetic leather.
In order to meet the consumer demand, the artificial leather needs to have a more real hand feeling, and the common PVC artificial leather has plastic characteristics, so that the hand feeling is always strong and bad, and the consumer demand is difficult to meet, so that there is room for improvement.
Disclosure of Invention
Aiming at the defects in the prior art, the first purpose of the invention is to provide an aqueous matte finishing agent which has the advantage of good hand feeling.
In order to achieve the purpose, the invention provides the following technical scheme:
the water-based matte finishing agent comprises the following components in parts by weight:
25 parts of waterborne polyurethane;
55-65 parts of pure water;
3-5 parts of conductive metal powder;
0.3-0.5 part of cobalt salt;
5-8 parts of an organic silicon hand feeling agent.
By adopting the technical scheme, the aqueous polyurethane is adopted, so that the aqueous polyurethane can be diluted by pure water without adopting an organic solvent when being diluted, the pollution to the environment is reduced, and the pungent smell emitted by a coating formed by covering the surface of the artificial leather with the aqueous matte finishing agent is effectively reduced; by adding the organic silicon hand feeling agent, the water-based matte finishing agent can endow the surface of the artificial leather with better soft feeling and smooth feeling, and surface lines are formed so that the artificial leather has better hand feeling and is more close to the hand feeling of natural leather products; the water-based matte finishing agent forms a layer of conductive coating film on the surface of the artificial leather by adding the conductive metal powder, so that when artificial leather products such as sofas, carpets and the like which are usually fixed on the ground rub against human bodies to generate static electricity, the charge is quickly conducted through the coating film covered on the surface of the artificial leather, the condition that the local static charge accumulation of the artificial leather causes the adsorption of a large amount of dust is reduced, meanwhile, the static charge accumulated by the human body is guided to the ground through the coating film, the condition that the static charge accumulation of the human body affects the physiological characteristics of the human body is further reduced, and the condition that the human body discharges to cause discomfort is also reduced; the bonding stability of the conductive metal powder and the organosilicon hand feeling agent is improved by adding the cobalt salt, so that the conductive metal powder is stably and uniformly dispersed, and a coating formed by the water-based matte finishing agent has better conductivity.
The invention is further configured to: the paint also comprises the following components in parts by mass:
1-3 parts of a leveling agent;
0.2-0.4 part of defoaming agent;
1-1.5 parts of a thickening agent;
3-5 parts of a flatting agent.
By adopting the technical scheme, the leveling agent is added, so that the water-based matte finishing agent forms a flat, smooth and uniform coating film in the process of drying and film forming, and the formed film is uniform and natural; the defoaming agent is added to inhibit the generation of foam and avoid the condition that the appearance of a coating film formed by the aqueous matte finishing agent is influenced by hollowing, bubbles and the like; the thickening agent is added, so that the water-based matte finishing agent is not easy to flow randomly after being coated on the artificial leather, and the thickness of a coating formed by coating the water-based matte finishing agent on the surface of the artificial leather is uniform; the light pollution is reduced by adding the flatting agent, so that the appearance of the artificial leather treated by the water-based matte finishing agent is more natural.
The invention is further configured to: the waterborne polyurethane is self-crosslinking waterborne polyurethane.
By adopting the technical scheme and adopting the self-crosslinking waterborne polyurethane, the waterborne matte finishing agent does not need to be added with substances such as a curing agent, a curing initiator and the like, so that the construction is convenient when a coating is formed.
The invention is further configured to: the conductive metal powder comprises one or two of copper powder and silver powder.
By adopting the technical scheme, the high conductivity of the copper powder or the silver powder is utilized, so that the conductive effect is better, and the effect of reducing the static charge of the human body is better.
The invention is further configured to: the leveling agent is an organic silicon leveling agent.
By adopting the technical scheme, the leveling agent, the waterborne polyurethane and the organic silicon hand feeling agent have good compatibility, are easy to disperse uniformly, and the effect of the leveling agent is better exerted.
The invention is further configured to: the defoaming agent is an organic silicon defoaming agent.
By adopting the technical scheme, the defoaming agent has good compatibility with the waterborne polyurethane and the organic silicon hand feeling agent, so that the defoaming agent is easy to disperse uniformly, and the defoaming effect is good.
The invention is further configured to: the thickening agent is starch.
Through adopting above-mentioned technical scheme, carry out the thickening through adopting natural thickener starch, reduce pollution, more environmental protection, and thickening effect preferred.
The invention is further configured to: the composite material also comprises the following components in mass dispersion:
0.1-0.3 part of anthocyanin.
By adopting the technical scheme, the anthocyanin is added, so that the anthocyanin is combined with glucose molecules in the starch in a glycosidic bond form, and then molecular chains of the starch are prolonged, so that the thickening effect of the starch is better, and the using amount is reduced.
In view of the defects of the prior art, the second object of the present invention is to provide a method for preparing the aqueous matte finishing agent, which comprises the following steps:
(1) adding conductive metal powder and cobalt salt into the organic silicon hand feeling agent, and uniformly stirring to form a first premix;
(2) adding waterborne polyurethane and the first premix into pure water, and uniformly stirring to form a second premix;
(3) and adding a leveling agent, a defoaming agent, a thickening agent and a delustering agent into the second premix, and uniformly stirring to form the final product of the aqueous matte finishing agent.
Through adopting above-mentioned technical scheme, through dispersing electrically conductive metal powder and cobalt salt in organosilicon handle agent, with make full use of cobalt salt increase electrically conductive metal powder and organosilicon handle agent's bonding stability's characteristic, make electrically conductive metal powder homodisperse in organosilicon handle agent, in order to make electrically conductive metal powder homodisperse in aqueous polyurethane aqueous solution through organosilicon handle agent homodisperse in aqueous polyurethane aqueous solution, reduce the circumstances such as electrically conductive metal powder reunion, sediment, make organosilicon handle agent produce micro-unevenness through electrically conductive metal powder simultaneously, and then make aqueous mist surface treating agent scribble the coating on the synthetic leather and produce certain handle line, so that the feel of synthetic leather is preferred.
The invention is further configured to: the step (1) is stirred at the temperature of 75-85 ℃, the step (2) is stirred at the room temperature, and the step (3) is stirred at the room temperature.
By adopting the technical scheme, the conductive metal powder and the organic silicon hand feeling agent are stirred and mixed at the temperature of 75-85 ℃, so that the organic silicon hand feeling agent has better fluidity at high temperature, the conductive metal powder is easier to disperse uniformly, and the efficiency is improved; by performing the step (2) and the step (3) at room temperature, the influence of high temperature on the activity of the leveling agent, the defoaming agent, the thickening agent and the matting agent is avoided, so that the quality of the aqueous matte finishing agent is better.
In conclusion, the invention has the following beneficial effects:
1. by adding the organic silicon hand feeling agent, the water-based matte finishing agent can endow the surface of the artificial leather with better soft feeling and smooth feeling, and surface lines are formed so that the artificial leather has better hand feeling and is more close to the hand feeling of natural leather products;
2. the conductive metal powder is added, so that the waterborne matte finishing agent forms a conductive coating film on the surface of the artificial leather, and the artificial leather products such as sofas, carpets and the like which are usually fixed on the ground can guide the static charges accumulated by the human body to the ground through the coating film, thereby reducing the situation of the static charges accumulated by the human body;
3. the bonding stability of the conductive metal powder and the organosilicon hand feeling agent is improved by adding the cobalt salt, so that the conductive metal powder is stably and uniformly dispersed, and a coating formed by the water-based matte finishing agent has better conductivity.
Detailed Description
The present invention will be described in further detail with reference to examples.
In the following examples, a one-pack self-crosslinking type aqueous polyurethane resin available from Mitsui chemical corporation was used as the self-crosslinking aqueous polyurethane.
In the following examples, the cobalt salt was WK-850 nickel-free gun-colored cobalt salt available from Ganzhou Co-W GmbH.
In the following examples, silicone hand agents Silok-3538, available from Stokes Polymer Ltd, Guangzhou, were used.
In the following examples, the silicone leveling agent used was Silok-354, a silicone leveling agent of Polymer Ltd, Storocco, Guangzhou.
In the following examples, as the silicone defoaming agent, Silok-4500, which is a water-based silicone defoaming agent available from Polymer Ltd of Storocco, Guangzhou, was used.
In the following examples, S6 organic matting agent from san Source industries, Ltd, Dongguan was used as the matting agent.
Example 1
The water-based matte finishing agent comprises the following components in parts by weight:
25 parts of waterborne polyurethane; 55 parts of pure water; 5 parts of conductive metal powder; 0.5 part of cobalt salt; 8 parts of an organic silicon hand feeling agent; 3 parts of a leveling agent; 0.2 part of defoaming agent; 1 part of starch; 0.1 part of anthocyanin; and 5 parts of a flatting agent.
In this embodiment, the aqueous polyurethane is a self-crosslinking aqueous polyurethane;
in this embodiment, the conductive metal powder includes copper powder and silver powder, and the copper powder: silver powder 9: 1;
in the embodiment, the leveling agent is an organic silicon leveling agent;
in this example, the defoaming agent was a silicone defoaming agent.
The preparation method of the water-based matte finishing agent comprises the following steps:
(1) adding 8kg of organosilicon hand feeling agent, 4.5kg of copper powder, 0.5kg of silver powder and 0.5kg of cobalt salt into a stirring kettle, heating to 75 ℃, stirring at the rotating speed of 500r/min for 1h, uniformly stirring to form a first premix, stopping stirring, and naturally cooling to room temperature for later use;
(2) adding 55kg of pure water and 25kg of waterborne polyurethane into another stirring kettle, stirring for 30min at room temperature at the rotating speed of 1000r/min to form a waterborne polyurethane solution, then adding all the first premixes cooled to room temperature in the step (1), stirring for 45min at room temperature at the rotating speed of 800r/min, and uniformly stirring to form a second premixture;
(3) 3kg of flatting agent, 0.2kg of defoaming agent, 1kg of starch, 0.1kg of anthocyanin and 5kg of flatting agent are added, the mixture is stirred for 5min at the room temperature at the rotating speed of 600r/min, then the rotating speed is increased to 1000r/min, the mixture is stirred for 45min, and the final product of the water-based matte finishing agent is formed after the mixture is uniformly stirred.
Example 2
The water-based matte finishing agent comprises the following components in parts by weight:
25 parts of waterborne polyurethane; 60 parts of pure water; 4 parts of conductive metal powder; 0.4 part of cobalt salt; 6.5 parts of an organic silicon hand feeling agent; 2 parts of a leveling agent; 0.3 part of defoaming agent; 1.3 parts of starch; 0.2 part of anthocyanin; and 4 parts of a flatting agent.
In this embodiment, the aqueous polyurethane is a self-crosslinking aqueous polyurethane;
in this embodiment, the conductive metal powder includes copper powder and silver powder, and the copper powder: silver powder 9: 1; 1;
in the embodiment, the leveling agent is an organic silicon leveling agent;
in this example, the defoaming agent was a silicone defoaming agent.
The preparation method of the water-based matte finishing agent comprises the following steps:
(1) adding 6.5kg of organosilicon hand feeling agent, 3.6kg of copper powder, 0.4kg of silver powder and 0.4kg of cobalt salt into a stirring kettle, heating to 80 ℃, rotating at 800r/min, stirring for 45min, uniformly stirring to form a first premix, stopping stirring, and naturally cooling to room temperature for later use;
(2) adding 60kg of pure water and 25kg of waterborne polyurethane into another stirring kettle, stirring for 30min at room temperature at the rotating speed of 1000r/min to form a waterborne polyurethane solution, then adding all the first premixes cooled to room temperature in the step (1), stirring for 45min at room temperature at the rotating speed of 800r/min, and uniformly stirring to form a second premixture;
(3) adding 2kg of flatting agent, 0.3kg of defoaming agent, 1.3kg of starch, 0.2kg of anthocyanin and 4kg of flatting agent, stirring at the room temperature at the rotating speed of 600r/min for 5min, then accelerating the rotating speed to 1000r/min, stirring for 45min, and uniformly stirring to form the final product of the water-based matte finishing agent.
Example 3
The water-based matte finishing agent comprises the following components in parts by weight:
25 parts of waterborne polyurethane; 65 parts of pure water; 3 parts of conductive metal powder; 0.3 part of cobalt salt; 5 parts of an organic silicon hand feeling agent; 1 part of a leveling agent; 0.4 part of defoaming agent; 1.5 parts of starch; 0.3 part of anthocyanin; 3 parts of a flatting agent.
In this embodiment, the aqueous polyurethane is a self-crosslinking aqueous polyurethane;
in this embodiment, the conductive metal powder includes copper powder and silver powder, and the copper powder: silver powder 9: 1;
in the embodiment, the leveling agent is an organic silicon leveling agent;
in this example, the defoaming agent was a silicone defoaming agent.
The preparation method of the water-based matte finishing agent comprises the following steps:
(1) adding 5kg of organosilicon hand feeling agent, 2.7kg of copper powder, 0.3kg of silver powder and 0.3kg of cobalt salt into a stirring kettle, heating to 85 ℃, rotating at 800r/min, stirring for 40min, uniformly stirring to form a first premix, stopping stirring, and naturally cooling to room temperature for later use;
(2) adding 65kg of pure water and 25kg of waterborne polyurethane into another stirring kettle, stirring for 30min at room temperature at the rotating speed of 1000r/min to form a waterborne polyurethane solution, then adding all the first premixes cooled to room temperature in the step (1), stirring for 45min at room temperature at the rotating speed of 800r/min, and uniformly stirring to form a second premixture;
(3) adding 1kg of flatting agent, 0.4kg of defoaming agent, 1.5kg of starch, 0.3kg of anthocyanin and 3kg of flatting agent, stirring at the room temperature at the rotating speed of 600r/min for 5min, then accelerating the rotating speed to 1000r/min, stirring for 45min, and uniformly stirring to form the final product of the water-based matte finishing agent.
Example 4
The water-based matte finishing agent comprises the following components in parts by weight:
25 parts of waterborne polyurethane; 65 parts of pure water; 5 parts of conductive metal powder; 0.5 part of cobalt salt; 7 parts of an organic silicon hand feeling agent; 1.5 parts of a leveling agent; 0.4 part of defoaming agent; 1.2 parts of starch; 0.2 part of anthocyanin; and 4 parts of a flatting agent.
In this embodiment, the aqueous polyurethane is a self-crosslinking aqueous polyurethane;
in this embodiment, the conductive metal powder includes copper powder and silver powder, and the copper powder: silver powder 9: 1;
in the embodiment, the leveling agent is an organic silicon leveling agent;
in this example, the defoaming agent was a silicone defoaming agent.
The preparation method of the water-based matte finishing agent comprises the following steps:
(1) adding 7kg of organic silicon hand feeling agent, 4.5kg of copper powder, 0.5kg of silver powder and 0.5kg of cobalt salt into a stirring kettle, heating to 85 ℃, rotating speed of 800r/min, stirring for 40min, forming a first premix after uniformly stirring, stopping stirring, and naturally cooling to room temperature for later use;
(2) adding 65kg of pure water and 25kg of waterborne polyurethane into another stirring kettle, stirring for 30min at room temperature at the rotating speed of 1000r/min to form a waterborne polyurethane solution, then adding all the first premixes cooled to room temperature in the step (1), stirring for 45min at room temperature at the rotating speed of 800r/min, and uniformly stirring to form a second premixture;
(3) adding 1.5kg of flatting agent, 0.4kg of defoaming agent, 1.2kg of starch, 0.2kg of anthocyanin and 4kg of flatting agent, stirring at the room temperature at the rotating speed of 600r/min for 5min, then accelerating the rotating speed to 1000r/min, stirring for 45min, and uniformly stirring to form the final product of the water-based matte finishing agent.
Comparative example 1
The water-based matte finishing agent comprises the following components in parts by weight:
25 parts of waterborne polyurethane; 65 parts of pure water; 8 parts of conductive metal powder; 0.8 part of cobalt salt; 7 parts of an organic silicon hand feeling agent; 1.5 parts of a leveling agent; 0.4 part of defoaming agent; 1.2 parts of starch; 0.2 part of anthocyanin; and 4 parts of a flatting agent.
In this embodiment, the aqueous polyurethane is a self-crosslinking aqueous polyurethane;
in this embodiment, the conductive metal powder includes copper powder and silver powder, and the copper powder: silver powder 9: 1;
in the embodiment, the leveling agent is an organic silicon leveling agent;
in this example, the defoaming agent was a silicone defoaming agent.
The preparation method of the water-based matte finishing agent comprises the following steps:
(1) adding 7kg of organosilicon hand feeling agent, 7.2kg of copper powder, 0.8kg of silver powder and 0.8kg of cobalt salt into a stirring kettle, heating to 85 ℃, rotating at 800r/min, stirring for 40min, uniformly stirring to form a first premix, stopping stirring, and naturally cooling to room temperature for later use;
(2) adding 65kg of pure water and 25kg of waterborne polyurethane into another stirring kettle, stirring for 30min at room temperature at the rotating speed of 1000r/min to form a waterborne polyurethane solution, then adding all the first premixes cooled to room temperature in the step (1), stirring for 45min at room temperature at the rotating speed of 800r/min, and uniformly stirring to form a second premixture;
(3) adding 1.5kg of flatting agent, 0.4kg of defoaming agent, 1.2kg of starch, 0.2kg of anthocyanin and 4kg of flatting agent, stirring at the room temperature at the rotating speed of 600r/min for 5min, then accelerating the rotating speed to 1000r/min, stirring for 45min, and uniformly stirring to form the final product of the water-based matte finishing agent.
Comparative example 2
The water-based matte finishing agent comprises the following components in parts by weight:
25 parts of waterborne polyurethane; 65 parts of pure water; 10 parts of conductive metal powder; 1 part of cobalt salt; 7 parts of an organic silicon hand feeling agent; 1.5 parts of a leveling agent; 0.4 part of defoaming agent; 1.2 parts of starch; 0.2 part of anthocyanin; and 4 parts of a flatting agent.
In this embodiment, the aqueous polyurethane is a self-crosslinking aqueous polyurethane;
in this embodiment, the conductive metal powder includes copper powder and silver powder, and the copper powder: silver powder 9: 1;
in the embodiment, the leveling agent is an organic silicon leveling agent;
in this example, the defoaming agent was a silicone defoaming agent.
The preparation method of the water-based matte finishing agent comprises the following steps:
(1) adding 7kg of organic silicon hand feeling agent, 9kg of copper powder, 1kg of silver powder and 1kg of cobalt salt into a stirring kettle, heating to 85 ℃, rotating at 800r/min, stirring for 40min, forming a first premix after uniformly stirring, stopping stirring, and naturally cooling to room temperature for later use;
(2) adding 65kg of pure water and 25kg of waterborne polyurethane into another stirring kettle, stirring for 30min at room temperature at the rotating speed of 1000r/min to form a waterborne polyurethane solution, then adding all the first premixes cooled to room temperature in the step (1), stirring for 45min at room temperature at the rotating speed of 800r/min, and uniformly stirring to form a second premixture;
(3) adding 1.5kg of flatting agent, 0.4kg of defoaming agent, 1.2kg of starch, 0.2kg of anthocyanin and 4kg of flatting agent, stirring at the room temperature at the rotating speed of 600r/min for 5min, then accelerating the rotating speed to 1000r/min, stirring for 45min, and uniformly stirring to form the final product of the water-based matte finishing agent.
Comparative example 3
The water-based matte finishing agent comprises the following components in parts by weight:
25 parts of waterborne polyurethane; 65 parts of pure water; 5 parts of conductive metal powder; 7 parts of an organic silicon hand feeling agent; 1.5 parts of a leveling agent; 0.4 part of defoaming agent; 1.2 parts of starch; 0.2 part of anthocyanin; and 4 parts of a flatting agent.
In this embodiment, the aqueous polyurethane is a self-crosslinking aqueous polyurethane;
in this embodiment, the conductive metal powder includes copper powder and silver powder, and the copper powder: silver powder 9: 1;
in the embodiment, the leveling agent is an organic silicon leveling agent;
in this example, the defoaming agent was a silicone defoaming agent.
The preparation method of the water-based matte finishing agent comprises the following steps:
(1) adding 7kg of organic silicon hand feeling agent, 4.5kg of copper powder and 0.5kg of silver powder into a stirring kettle, heating to 85 ℃, rotating at 800r/min, stirring for 40min, forming a first premix after uniformly stirring, stopping stirring, and naturally cooling to room temperature for later use;
(2) adding 65kg of pure water and 25kg of waterborne polyurethane into another stirring kettle, stirring for 30min at room temperature at the rotating speed of 1000r/min to form a waterborne polyurethane solution, then adding all the first premixes cooled to room temperature in the step (1), stirring for 45min at room temperature at the rotating speed of 800r/min, and uniformly stirring to form a second premixture;
(3) adding 1.5kg of flatting agent, 0.4kg of defoaming agent, 1.2kg of starch, 0.2kg of anthocyanin and 4kg of flatting agent, stirring at the room temperature at the rotating speed of 600r/min for 5min, then accelerating the rotating speed to 1000r/min, stirring for 45min, and uniformly stirring to form the final product of the water-based matte finishing agent.
Comparative example 4
The water-based matte finishing agent comprises the following components in parts by weight:
25 parts of waterborne polyurethane; 65 parts of pure water; 7 parts of an organic silicon hand feeling agent; 1.5 parts of a leveling agent; 0.4 part of defoaming agent; 1.2 parts of starch; 0.2 part of anthocyanin; and 4 parts of a flatting agent.
In this embodiment, the aqueous polyurethane is a self-crosslinking aqueous polyurethane;
in the embodiment, the leveling agent is an organic silicon leveling agent;
in this example, the defoaming agent was a silicone defoaming agent.
The preparation method of the water-based matte finishing agent comprises the following steps:
(1) adding 7kg of organic silicon hand feeling agent into a stirring kettle, heating to 85 ℃, stirring at the rotating speed of 800r/min for 40min, uniformly stirring to form a first premix, stopping stirring, and naturally cooling to room temperature for later use;
(2) adding 65kg of pure water and 25kg of waterborne polyurethane into another stirring kettle, stirring for 30min at room temperature at the rotating speed of 1000r/min to form a waterborne polyurethane solution, then adding all the first premixes cooled to room temperature in the step (1), stirring for 45min at room temperature at the rotating speed of 800r/min, and uniformly stirring to form a second premixture;
(3) adding 1.5kg of flatting agent, 0.4kg of defoaming agent, 1.2kg of starch, 0.2kg of anthocyanin and 4kg of flatting agent, stirring at the room temperature at the rotating speed of 600r/min for 5min, then accelerating the rotating speed to 1000r/min, stirring for 45min, and uniformly stirring to form the final product of the water-based matte finishing agent.
Comparative example 5
The water-based matte finishing agent comprises the following components in parts by weight:
25 parts of waterborne polyurethane; 65 parts of pure water; 1.5 parts of a leveling agent; 0.4 part of defoaming agent; 1.2 parts of starch; 0.2 part of anthocyanin; and 4 parts of a flatting agent.
In this embodiment, the aqueous polyurethane is a self-crosslinking aqueous polyurethane;
in the embodiment, the leveling agent is an organic silicon leveling agent;
in this example, the defoaming agent was a silicone defoaming agent.
The preparation method of the water-based matte finishing agent comprises the following steps:
(1) adding 65kg of pure water and 25kg of waterborne polyurethane into another stirring kettle, stirring for 30min at room temperature at the rotating speed of 1000r/min to form a waterborne polyurethane solution, then adding all the first premixes cooled to room temperature in the step (1), stirring for 45min at room temperature at the rotating speed of 800r/min, and uniformly stirring to form a second premixture;
(2) adding 1.5kg of flatting agent, 0.4kg of defoaming agent, 1.2kg of starch, 0.2kg of anthocyanin and 4kg of flatting agent, stirring at the room temperature at the rotating speed of 600r/min for 5min, then accelerating the rotating speed to 1000r/min, stirring for 45min, and uniformly stirring to form the final product of the water-based matte finishing agent.
Comparative example 6
The water-based matte finishing agent comprises the following components in parts by weight:
25 parts of waterborne polyurethane; 65 parts of pure water; 5 parts of conductive metal powder; 0.5 part of cobalt salt; 7 parts of an organic silicon hand feeling agent; 1.5 parts of a leveling agent; 0.4 part of defoaming agent; 1.2 parts of starch; and 4 parts of a flatting agent.
In this embodiment, the aqueous polyurethane is a self-crosslinking aqueous polyurethane;
in this embodiment, the conductive metal powder includes copper powder and silver powder, and the copper powder: silver powder 9: 1;
in the embodiment, the leveling agent is an organic silicon leveling agent;
in this example, the defoaming agent was a silicone defoaming agent.
The preparation method of the water-based matte finishing agent comprises the following steps:
(1) adding 7kg of organic silicon hand feeling agent, 4.5kg of copper powder, 0.5kg of silver powder and 0.5kg of cobalt salt into a stirring kettle, heating to 85 ℃, rotating speed of 800r/min, stirring for 40min, forming a first premix after uniformly stirring, stopping stirring, and naturally cooling to room temperature for later use;
(2) adding 65kg of pure water and 25kg of waterborne polyurethane into another stirring kettle, stirring for 30min at room temperature at the rotating speed of 1000r/min to form a waterborne polyurethane solution, then adding all the first premixes cooled to room temperature in the step (1), stirring for 45min at room temperature at the rotating speed of 800r/min, and uniformly stirring to form a second premixture;
(3) adding 1.5kg of flatting agent, 0.4kg of defoaming agent, 1.2kg of starch and 4kg of flatting agent, stirring for 5min at the room temperature at the rotating speed of 600r/min, then accelerating the rotating speed to 1000r/min, stirring for 45min, and uniformly stirring to form the final product of the water-based matte finishing agent.
Experiment 1
The viscosities (MPa · s) of the aqueous mist surface treatment agents of the examples and comparative examples were measured by a rotary viscometer in accordance with GB/T22235-2008 "measurement of liquid viscosity".
Experiment 2
The volume resistivity of the aqueous matte surface treatment agent of each example and each comparative example after being dried to form a coating film was measured according to the test method for electrical insulating properties (test methods for insulation resistivity, surface resistivity, and volume resistivity) of coating film, QJ 2220.2-92.
Experiment 3
The aqueous matte finishing agents of examples and comparative examples were coated on PVC artificial leather, 10 testers were invited to each test for hand feeling, and the hand feeling ratings were evaluated to the highest 10 grades and the lowest 1 grade.
Experiment 4
The aqueous mist surface treatment agents of the examples and comparative examples were observed for precipitation after standing for 10 hours in a liquid state.
Experiment 5
The conductive metal powder was observed to agglomerate after the aqueous matte finishing agents of the examples and comparative examples were dried to form films.
Specifically, the water-based matte finishing agent is coated on PVC artificial leather, the thickness of the water-based matte finishing agent is 1cm, a coating film is scratched along a straight line, the length of a tangent plane is 10cm, the number of conductive metal powder agglomerated particles with the particle size of more than 1mm is calculated, three cuts are randomly scratched on each sample, and the average value is calculated.
The test data of each example and comparative example are shown in Table 1
TABLE 1
According to comparison between comparative example 6 and each example in table 1, the anthocyanin is added to be matched with starch, and the viscosity of the liquid aqueous matte surface treatment agent is effectively improved by prolonging the molecular chain of the starch.
According to table 1, the addition of the conductive metal powder can effectively reduce the volume resistivity of the coating film formed by the aqueous matte finishing agent, but when the addition amount of the conductive metal powder is too large or the addition amount of the cobalt salt is insufficient, the conductive metal powder is difficult to uniformly disperse and generates agglomeration, so that the volume resistivity of the coating film formed by the aqueous matte finishing agent depends on the region with the minimum content of the conductive metal powder, and therefore, when the addition amount of the cobalt salt is insufficient, the effect of reducing the volume resistivity of the coating film formed by the aqueous matte finishing agent is poor due to the continuous increase of the conductive metal powder after exceeding a certain range, and meanwhile, when the addition amount of the cobalt salt is insufficient, the volume resistivity of the coating film formed by the aqueous matte finishing agent is increased.
According to the table 1, the conductive metal powder is added, and the organosilicon hand feeling agent can be matched to a certain degree, so that the organosilicon hand feeling agent forms trace lines, and the hand feeling is improved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (6)
1. An aqueous matte finishing agent, which is characterized in that: the composition comprises the following components in parts by mass:
25 parts of waterborne polyurethane;
55-65 parts of pure water;
3-5 parts of conductive metal powder;
0.3-0.5 part of cobalt salt;
5-8 parts of an organic silicon hand feeling agent;
1-3 parts of a leveling agent;
0.2-0.4 part of defoaming agent;
1-1.5 parts of starch;
3-5 parts of a flatting agent;
0.1-0.3 part of anthocyanin;
the cobalt salt adopts WK-850 nickel-free gun-color cobalt salt of Ganzhou cobalt-tungsten Limited liability company;
the conductive metal powder comprises one or two of copper powder and silver powder.
2. The aqueous matte finishing agent according to claim 1, wherein: the waterborne polyurethane is self-crosslinking waterborne polyurethane.
3. The aqueous matte finishing agent according to claim 1, wherein: the leveling agent is an organic silicon leveling agent.
4. The aqueous matte finishing agent according to claim 1, wherein: the defoaming agent is an organic silicon defoaming agent.
5. A method for producing the aqueous matte finishing agent according to any one of claims 1 to 4, characterized by: the method comprises the following steps:
(1) adding conductive metal powder and cobalt salt into the organic silicon hand feeling agent, and uniformly stirring to form a first premix;
(2) adding waterborne polyurethane and the first premix into pure water, and uniformly stirring to form a second premix;
(3) and adding a leveling agent, a defoaming agent, starch, anthocyanin and a flatting agent into the second premix, and uniformly stirring to form the final product, namely the water-based matte finishing agent.
6. The method according to claim 5, wherein: stirring at 75-85 deg.c in step (1), stirring at normal temperature in step (2), and stirring at normal temperature in step (3).
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| CN113832742A (en) * | 2021-10-14 | 2021-12-24 | 清远市齐力合成革有限公司 | Fabric for suede clothing leather and manufacturing method thereof |
| CN114318889A (en) * | 2021-12-14 | 2022-04-12 | 无锡市曼优丽新型复合材料有限公司 | High-physical-property military belt leather and preparation method thereof |
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