CN109929953B - General water-based environment-friendly leather edge banding agent for non-ironing planting and chrome tanning and preparation method and application thereof - Google Patents
General water-based environment-friendly leather edge banding agent for non-ironing planting and chrome tanning and preparation method and application thereof Download PDFInfo
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Abstract
The invention provides a general water-based environment-friendly leather edge banding agent for non-ironing planting and chrome tanning, and a preparation method and application thereof, and the general water-based environment-friendly leather edge banding agent comprises a component A and a component B, wherein the component A comprises the following raw materials in percentage by weight: 10-20% of tannin, 3-5% of penetrating agent and the balance of water; the component B comprises the following raw materials in percentage by weight: 0.5-1.5% of leather polishing agent, 1.5-3% of cross-linking agent, 50-70% of film-forming agent, 0.5-1% of thickening agent, 0.2-0.5% of defoaming agent, 0.1-0.3% of anti-sticking agent, 1-3% of disperse dye and the balance of water. The water-based environment-friendly leather edge banding agent for the plant-chrome tanning can be suitable for edge banding of vegetable-tanned leather and edge banding of chrome-tanned leather, and solves the problem that the vegetable-tanned leather and the chrome-tanned leather can not use the same leather water-based edge banding agent (set).
Description
Technical Field
The invention relates to the field of leather chemistry and engineering, in particular to a general water-based environment-friendly leather edge sealing agent for non-ironing planting and chrome tanning and a preparation method and application thereof.
Background
The leather edge sealing refers to a process and a method for physically treating leather cuts, smearing the leather cuts on bare leather cuts by using special prepared chemical reagents, and performing special process treatment, so that the leather edges are full and smooth, have smooth lines and certain elasticity and texture, and can prevent the scattered leather edges from being stained with dust. The professional leather edge sealing agent can be divided into water-based leather and oil-based leather edge sealing agents, the oil-based leather edge sealing agent has a good edge sealing effect, does not need edge ironing treatment, is suitable for vegetable tanned leather and chrome tanned leather, but has high toxicity, and mainly comprises water-insoluble acrylic resin (high-gloss resin and matte resin), a defoaming agent, a color coating, a leveling agent, an organic solvent and the like. The water-based edge banding agent mainly comprises a water-soluble film forming agent, a flatting agent, a defoaming agent, a color coating, a cross-linking agent and a part of solvent, and has no toxicity to human bodies and the environment.
At present, the water-based edge banding agent sold in the market is only used for vegetable tanned leather, the vegetable tanned leather is mainly leather formed by tanning through multipoint hydrogen bond combination of phenolic hydroxyl of tannin and peptidyl of collagen, and the like, and the vegetable tanned leather is characterized in that leather fiber tissue is compact, extensibility is small, formability is good, a plate surface is full and rich in elasticity, and the vegetable tanned leather is not greasy, and grain surface and suede of the leather are glossy, so that common oil-based and water-based edge banding treatment is easy to carry out. The chrome tanning mainly utilizes polynuclear chromium complex formed by chromium ions in the chrome tanning agent and amino, peptidyl and hydroxyl in collagen to carry out intermolecular and intramolecular multipoint crosslinking through intermolecular forces such as salt, alkali, hydrogen bond and the like so as to form the tanning leather. However, compared with the vegetable tanned leather, the chrome tanned leather has the advantages of low plasticity, difficult processing and forming, soft cut edge, more burrs and loose leather, is generally suitable for oil edge sealing but not water edge sealing, and has troublesome treatment process because the high-temperature edge ironing process is required to treat the chrome tanned leather to achieve the effects of flatness and compactness if the water edge sealing is required. In terms of technology, no water-based edge banding agent which is not subjected to edge ironing treatment and is commonly used for chrome tanned leather and vegetable tanned leather exists at present. The invention aims at the situation to prepare the water-based edge banding agent which can be universally used for the vegetable tanned leather and the chrome tanned leather, and researches and determines the using method of the water-based edge banding agent.
Disclosure of Invention
The invention provides a non-ironing plant-chrome tanning general water-based environment-friendly leather edge banding agent and a preparation method and application thereof.
The technical scheme for realizing the invention is as follows:
the water-based environment-friendly leather edge banding agent for the non-ironing planting-chrome tanning general purpose comprises a component A and a component B, wherein the component A comprises the following raw materials in percentage by weight: 10-20% of tannin, 3-5% of penetrating agent and the balance of water; the component B comprises the following raw materials in percentage by weight: 0.5-1.5% of leather polishing agent, 1.5-3% of cross-linking agent, 50-70% of film-forming agent, 0.5-1% of thickening agent, 0.2-0.5% of defoaming agent, 0.1-0.3% of anti-sticking agent, 1-3% of disperse dye and the balance of water.
The tannin is one of larch tannin, valonia tannin extract, gallnut tannin, Japanese pagodatree bark tannin, casuarina equisetifolia tannin, red root bark tannin, dioscorea cirrhosa tannin, black wattle bark tannin, shaddock bark tannin or oak bark tannin, and the penetrating agent is fatty alcohol polyoxyethylene ether (penetrating agent JFC).
The leather polishing agent 709G, the cross-linking agent is an amide vinyl cross-linking agent (an environment-friendly amide vinyl cross-linking agent C6) or a nitrogen propyl cross-linking agent (C9); the film forming agent is aqueous polyurethane dispersion emulsion (PU-2834) and oxidized polyethylene wax emulsion (Poligen WE 6); the thickening agent is a polyurethane leveling thickening agent (OS-6020 or OS-2020), the defoaming agent is an organic silicon defoaming agent (CX-470), the anti-sticking agent is a water-based paraffin emulsion (GZ-730), and the disperse dye is a special disperse dye for leather.
The preparation method of the water-based environment-friendly leather edge sealing agent for the non-ironing planting-chrome tanning comprises the following steps:
preparing a solution A:
adding tannin in the component A into water, then adding a penetrating agent, and uniformly stirring to obtain a solution A;
and B, preparation of a solution B:
adding the leather polishing agent, the cross-linking agent, the film-forming agent, the thickening agent, the defoaming agent, the anti-sticking agent and the disperse dye into water, and uniformly stirring at a low speed to obtain a liquid B.
Firstly, the liquid A is used for smearing the edges of the vegetable-tanned leather or the chrome-tanned leather, the liquid B is used for smearing for multiple times after the treatment is finished, slight polishing is carried out after each smearing, and the edge sealing of the vegetable-tanned leather or the chrome-tanned leather is finished after the smearing is finished.
The edge sealing treatment of the vegetable tanned leather comprises the following specific steps:
(1) the edges of the vegetable tanned leather are polished and leveled by 300-mesh, 600-mesh, 1000-mesh and 2000-mesh abrasive paper in sequence until no obvious burrs are touched;
(2) and (3) smearing the edge of the vegetable-tanned leather polished in the step (1) by using the liquid A, smearing by using the liquid B after 3-5min, wherein the smearing times are 2-3, airing for 3-5min after each smearing, solidifying and drying the surface of the vegetable-tanned leather, slightly polishing by using 2000-mesh abrasive paper after each smearing, and smearing by using the liquid B after the last polishing is finished, so that the edge sealing of the vegetable-tanned leather is finished.
The edge sealing treatment of chrome tanned leather comprises the following specific steps:
(1) the edge of the chrome tanned leather is polished and leveled by 300-mesh, 600-mesh, 1000-mesh and 2000-mesh abrasive paper in sequence until no obvious burr is touched;
(2) smearing the edge of the chrome tanned leather polished in the step (1) by using the solution A, wherein the treatment frequency is once every 6 hours, and the treatment time is 24-48 hours;
(3) and (3) smearing with the liquid B after the treatment is finished, wherein the smearing times are 3-5 times, airing for 5-10min after each smearing is finished, slightly polishing with 2000-mesh abrasive paper after each smearing, and smearing with the liquid B after the last polishing is finished to finish edge sealing of the chrome tanned leather.
The invention uses two formulas of the liquid A and the liquid B, and the two formulas have different treatment methods when treating vegetable tanned leather and chrome tanned leather. The liquid A mainly plays a role in promoting the cross-linking and shrinkage of collagen fibers at the edge of the leather, and the liquid B mainly plays a role in quickly forming a film at the edge of the leather.
The invention mainly uses the larch tannin as the tanning liquid component, and adds the assistant penetrating agent JFC to accelerate the penetration of the tanning liquid to the leather, and the larch tannin can be used for some light-colored leather, and the tannin and gallnut can be used for some dark-colored leather as the main components for preparing the A liquid.
The working principle of the water-based environment-friendly leather edge banding agent for the plant-chrome tanning is as follows: for the vegetable tanned leather, the liquid A can be used for treating the vegetable tanned leather edge once to promote the treated edge to be firmer, and then the liquid B is used for treating the edge of the vegetable tanned leather, so that a layer of film which is not easy to fall off and has certain strength and glossiness is formed on the surface of the vegetable tanned leather in a short time. For chrome tanned leather, firstly, the edge of the vegetable tanned leather is treated by using the liquid A, the treatment method is to coat the liquid A for multiple times within 48 hours of the edge of the vegetable tanned leather, the action of the larch tannin contained in the liquid A on the edge of the chrome tanned leather is mainly realized by retanning polyphenol substances contained in the larch tannin and residual amino, carboxyl and hydroxyl at the edge of the chrome tanned leather, a multi-point cross-linked coordination compound is formed through hydrogen bonds and salt test bonds, the edge of the chrome tanned leather is subjected to a vegetable tanning process again, the edge of the chrome tanned leather is hardened, a fiber tissue is compacted again, and then the liquid B is used for coating the edge of the chrome tanned leather on the basis.
The liquid B can also be added with a leather aqueous color fixing agent 1209D, and the aqueous color fixing agent 1209D has the functions of promoting the adhesion of leather dye to leather, and fading and decoloring textile; the leather polishing agent 709G has the function of improving the brightness of a film formed on the surface of the leather, and the environment-friendly amide ethylene crosslinking agent C6 or the N propyl crosslinking agent C9 has the function of accelerating the film forming function of the leather edge sealing agent and promoting the formation of a crosslinking network among internal molecules of the leather edge sealing agent, so that the formed film is not easy to fall off from the surface of the leather; the main functions of the aliphatic waterborne polyurethane resin dispersion emulsion PU-2834 and the oxidized polyethylene wax emulsion Poligen WE6 are film-forming, which is the main body of film formation; the polyurethane leveling thickener OS-6020 or OS-2020 has the functions of increasing the overall viscosity of the product, preventing the product from precipitation and avoiding the phenomena of sagging and dripping in the using process; the function of the organosilicon antifoaming agent CX-470 is to prevent the product from generating tiny foams which are difficult to eliminate during the use process and influencing the formation of a flat surface, and the function of the aqueous paraffin emulsion anti-sticking agent GZ-730 is to promote the product to form a smooth film on the edge surface of the leather and prevent the product from sticking.
The invention has the beneficial effects that:
(1) the invention uses the A liquid containing tannic acid to carry out curing treatment on the leather edge, so that the fiber of the leather edge becomes relatively compact, and therefore, the leather edge can be flattened without high-temperature treatment after treatment.
(2) The invention is suitable for various types of chrome tanned leather, vegetable tanned leather and semi-vegetable tanned leather, the leather types comprise various animal skins such as cow leather, sheep leather, horse leather, deer leather, minced skin, ostrich skin, crocodile skin, shark skin, pearl fish skin and the like, and artificial leathers are not included, because the artificial leathers do not contain amino, carboxyl and hydroxyl which can be used for the reaction of tannic acid.
(3) The water-based environment-friendly leather edge banding agent for the plant-chrome tanning can be suitable for edge banding of vegetable-tanned leather and edge banding of chrome-tanned leather, and solves the problem that the vegetable-tanned leather and the chrome-tanned leather can not use the same leather water-based edge banding agent (set).
(4) The invention can carry out water-based edge sealing on the chrome tanned leather by a simpler method, thereby avoiding the step of ironing, saving the manpower and simplifying the operation method.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
A preparation method of a water-based environment-friendly leather edge banding agent for non-ironing planting-chrome tanning general use comprises the following steps:
1) preparation of solution A: the larch tannin is used as a main component for preparing the solution A and is suitable for edge sealing treatment of colorless and light-colored leather, the larch tannin is dissolved in water to prepare a transparent solution with the concentration of 10%, then 3% of penetrating agent JFC is added into the transparent solution, and the transparent solution is uniformly stirred to prepare the solution A for later use.
2) And (3) preparation of a solution B: adding 1 percent of special leather disperse dye by mass into water, adding 30 percent of aliphatic waterborne polyurethane resin dispersion emulsion PU-2834, adding 20 percent of oxidized polyethylene wax emulsion Poligen WE6, adding 0.5 percent of leather glazing agent 709G, adding 1.5 percent of environment-friendly amide ethylene crosslinking agent C6 or azopropane crosslinking agent C9, adding 0.5 percent of polyurethane leveling thickener OS-6020, adding 0.2 percent of organosilicon defoamer CX-470, adding 0.1 percent of waterborne paraffin emulsion anti-sticking agent GZ-730, and uniformly stirring at the rotating speed of 150 revolutions/Min. And preparing a solution B for later use.
3) Edge sealing treatment
And (3) polishing and flattening the edges of the chrome-tanned cowhide leather by 300-mesh, 600-mesh, 1000-mesh and 2000-mesh abrasive paper until no obvious burrs are touched. Firstly, smearing the polished chrome tanned leather edge by using the solution A, wherein the treatment frequency is once every 6 hours, and 4 times of smearing are carried out successively, smearing is carried out by using the solution B after the treatment is finished, the smearing times are 3 times, the chrome tanned leather is aired for 5 minutes after each smearing is finished, slight polishing is carried out by using 2000-mesh abrasive paper after each smearing is finished, smearing is carried out by using the solution B after the last polishing is finished, and the edge sealing treatment of the chrome tanned leather of the cow leather is finished after the operations.
Example 2
A preparation method of a water-based environment-friendly leather edge banding agent for non-ironing planting-chrome tanning general use comprises the following steps:
1) preparation of solution A: the valonea extract is used as a main component for preparing the liquid A, and can be used for edge sealing of brown and black leather. Dissolving tannin in water to obtain 15% solution, adding 3.5% penetrating agent JFC, and stirring to obtain solution A.
2) And (3) preparation of a solution B: adding 1.5 percent of special leather disperse dye by mass percent into water, adding 35 percent of aliphatic waterborne polyurethane resin dispersion emulsion PU-2834, adding 22 percent of oxidized polyethylene wax emulsion Poligen WE6, adding 0.8 percent of leather glazing agent 709G, adding 2 percent of environment-friendly amide ethylene crosslinking agent C6 or azopropane crosslinking agent C9, adding 0.75 percent of polyurethane leveling thickener OS-6020, adding 0.3 percent of organosilicon defoamer CX-470, adding 0.2 percent of waterborne paraffin emulsion anti-sticking agent GZ-730, and stirring uniformly at the rotating speed of 180 r/Min. And preparing a solution B for later use.
3) Concrete edge sealing treatment method
And (3) polishing and flattening the edges of the hippophae leather by 300-mesh, 600-mesh, 1000-mesh and 2000-mesh abrasive paper until no obvious burrs are touched. Firstly, smearing the polished chrome tanned leather edge by using the solution A, wherein the treatment frequency is once every 6 hours, and the treatment is carried out for 5 times in sequence. And (3) smearing by using the liquid B after the treatment is finished, wherein the smearing times are 4 times, airing for 6 minutes after each smearing is finished, slightly polishing by using 2000-mesh abrasive paper after each smearing, and smearing by using the liquid B after the last polishing is finished to finish edge sealing of the hippophae rhamnoides chrome tanned leather.
Example 3
A preparation method of a water-based environment-friendly leather edge banding agent for non-ironing planting-chrome tanning general use comprises the following steps:
1) preparation of solution A: galla chinensis tannin is used as main component for preparing solution A, and is suitable for dark leather, especially black and brown leather. Dissolving tannin in water to obtain 15% solution, adding 4% penetrating agent JFC, and stirring to obtain solution A.
2) And (3) preparation of a solution B: adding 2% of special leather disperse dye by mass percent into water, adding 40% of aliphatic waterborne polyurethane resin dispersion emulsion PU-2834, adding 23.5% of oxidized polyethylene wax emulsion Poligen WE6, adding 1.2% of leather glazing agent 709G, adding 2.5% of environment-friendly amide ethylene crosslinking agent C6 or azopropane crosslinking agent C9, adding 0.75% of polyurethane leveling thickener OS-2020, adding 0.4% of organosilicon defoamer CX-470, adding 0.25% of waterborne paraffin emulsion anti-sticking agent GZ-730, and uniformly stirring at a lower rotating speed of 180 revolutions/Min. And preparing a solution B for later use.
3) Concrete edge sealing treatment method
And (3) polishing and flattening the cow leather vegetable tanned leather by using 300-mesh, 600-mesh, 1000-mesh and 2000-mesh abrasive paper in sequence until no obvious burrs are touched. Firstly, smearing the edge of the ground vegetable-tanned leather once by using the solution A, smearing the solution B after drying every 5 minutes, wherein the smearing times are 3, slightly polishing the vegetable-tanned leather by using 2000-mesh abrasive paper after each smearing, and smearing the vegetable-tanned leather by using the solution B after the last polishing is finished, so that the edge sealing of the cowhide vegetable-tanned leather is finished.
Example 4
A preparation method of a water-based environment-friendly leather edge banding agent for non-ironing planting-chrome tanning general use comprises the following steps:
1) preparation of solution A: the cortex sophorae tannin is used as a main component for preparing the solution A, and is suitable for edge sealing of black leather. Dissolving cortex sophorae tannin in water to obtain 20% solution, adding 5% penetrant JFC, stirring, and preparing solution A.
2) And (3) preparation of a solution B: adding 3 percent of special leather disperse dye by mass into water, adding 45 percent of aliphatic waterborne polyurethane resin dispersion emulsion PU-2834, adding 25 percent of oxidized polyethylene wax emulsion Poligen WE6, adding 1.5 percent of leather glazing agent 709G, adding 3 percent of environment-friendly amide ethylene crosslinking agent C6 or azopropidine crosslinking agent C9, adding 1 percent of polyurethane leveling thickener OS-2020, adding 0.5 percent of organosilicon defoamer CX-470, adding 0.3 percent of waterborne paraffin emulsion anti-sticking agent GZ-730, and uniformly stirring at the rotating speed of 200 revolutions per minute. And preparing a solution B for later use.
3) Concrete edge sealing treatment method
And (3) polishing and flattening the edges of the crocodile skin vegetable tanned leather by 300-mesh, 600-mesh, 1000-mesh and 2000-mesh abrasive paper until no obvious burrs are touched. Firstly, smearing the edge of the polished crocodile skin chrome tanned leather by using the solution A, wherein the treatment frequency is once every 6 hours, and the treatment is continuously carried out for 8 times. And (3) after the treatment, smearing with the liquid B for 5 times, airing for 5-10 minutes after each smearing, slightly polishing with 2000-mesh abrasive paper, and smearing with the liquid B after the last polishing is finished, so that edge sealing of the crocodile skin chrome tanned leather is completed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The water-based environment-friendly leather edge banding agent for the non-ironing planting-chrome tanning general purpose is characterized in that: the paint comprises a component A and a component B, wherein the component A comprises the following raw materials in percentage by weight: 10-20% of tannin, 3-5% of penetrating agent and the balance of water; the component B comprises the following raw materials in percentage by weight: 0.5-1.5% of leather polishing agent, 1.5-3% of cross-linking agent, 50-70% of film-forming agent, 0.5-1% of thickening agent, 0.2-0.5% of defoaming agent, 0.1-0.3% of anti-sticking agent, 1-3% of disperse dye and the balance of water;
the tannin is any one of larch tannin, valonia tannin extract, gallnut tannin, sophora japonica bark tannin, casuarina equisetifolia tannin, red root bark tannin, dioscorea cirrhosa tannin, black wattle bark tannin, shaddock bark tannin or oak bark tannin;
the leather polishing agent is 709G, and the cross-linking agent is an environment-friendly amide ethylene cross-linking agent C6 or a nitryl cross-linking agent C9; the film forming agent is aqueous polyurethane dispersion emulsion PU-2834 and oxidized polyethylene wax emulsion Poligen WE 6; the thickening agent is a polyurethane leveling thickening agent OS-6020 or OS-2020, the defoaming agent is an organic silicon defoaming agent CX-470, the anti-sticking agent is water-based paraffin emulsion GZ-730, and the disperse dye is a special disperse dye for leather.
2. The preparation method of the water-based environment-friendly leather edge banding agent for the non-ironing vegetable-chrome tanning general purpose of claim 1, which is characterized by comprising the following steps: the method comprises the following steps:
preparing a solution A:
adding tannin in the component A into water, then adding a penetrating agent, and uniformly stirring to obtain a solution A;
and B, preparation of a solution B:
adding the leather polishing agent, the cross-linking agent, the film-forming agent, the thickening agent, the defoaming agent, the anti-sticking agent and the disperse dye into water, and uniformly stirring at a low speed to obtain a liquid B.
3. The application of the water-based environment-friendly leather edge banding agent prepared by the preparation method of claim 2 in vegetable tanning and chrome tanning edge banding is characterized in that: firstly, the liquid A is used for smearing the edges of the vegetable-tanned leather or the chrome-tanned leather, the liquid B is used for smearing for multiple times after the treatment is finished, slight polishing is carried out after each smearing, and the edge sealing of the vegetable-tanned leather or the chrome-tanned leather is finished after the smearing is finished.
4. The application of claim 3, wherein the edge sealing treatment of the vegetable tanned leather comprises the following steps:
(1) the edges of the vegetable tanned leather are polished and leveled by 300-mesh, 600-mesh, 1000-mesh and 2000-mesh abrasive paper in sequence until no obvious burrs are touched;
(2) and (3) smearing the edge of the vegetable-tanned leather polished in the step (1) by using the liquid A, smearing by using the liquid B after 3-5min, wherein the smearing times are 2-3, airing for 3-5min after each smearing, solidifying and drying the surface of the vegetable-tanned leather, slightly polishing by using 2000-mesh abrasive paper after each smearing, and smearing by using the liquid B after the last polishing is finished, so that the edge sealing of the vegetable-tanned leather is finished.
5. The use according to claim 4, characterized in that the edge banding treatment of chrome tanned leather comprises the following specific steps:
(1) the edge of the chrome tanned leather is polished and leveled by 300-mesh, 600-mesh, 1000-mesh and 2000-mesh abrasive paper in sequence until no obvious burr is touched;
(2) smearing the edge of the chrome tanned leather polished in the step (1) by using the solution A, wherein the treatment frequency is once every 6 hours, and the treatment time is 24-48 hours;
(3) and (3) smearing with the liquid B after the treatment is finished, wherein the smearing times are 3-5 times, airing for 5-10min after each smearing is finished, slightly polishing with 2000-mesh abrasive paper after each smearing, and smearing with the liquid B after the last polishing is finished to finish edge sealing of the chrome tanned leather.
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| CN105602429A (en) * | 2016-02-23 | 2016-05-25 | 广州市迪孚卡乐进出口贸易有限公司 | Leather edge coat |
| CN107130067A (en) * | 2017-05-09 | 2017-09-05 | 温州市威利达皮革原料有限公司 | Case and bag pin toss oil formula |
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| CN105602429A (en) * | 2016-02-23 | 2016-05-25 | 广州市迪孚卡乐进出口贸易有限公司 | Leather edge coat |
| CN107130067A (en) * | 2017-05-09 | 2017-09-05 | 温州市威利达皮革原料有限公司 | Case and bag pin toss oil formula |
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