CN114133725B - Synthetic leather with rich colors and preparation method thereof - Google Patents

Synthetic leather with rich colors and preparation method thereof Download PDF

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Publication number
CN114133725B
CN114133725B CN202111323069.4A CN202111323069A CN114133725B CN 114133725 B CN114133725 B CN 114133725B CN 202111323069 A CN202111323069 A CN 202111323069A CN 114133725 B CN114133725 B CN 114133725B
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resin
synthetic leather
agent
preparation
color
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CN114133725A (en
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陈清
赵建明
高卫忠
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Kunshan Achilles New Material Technology Co ltd
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Kunshan Achilles New Material Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • 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
    • C08K3/32—Phosphorus-containing compounds
    • C08K2003/321—Phosphates
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/005—Additives being defined by their particle size in general
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

The application relates to the technical field of synthetic leather, and particularly discloses a synthetic leather with rich colors and a preparation method thereof. A kind of color-rich synthetic leather is made from the following raw materials by weight: 10-20 parts of a material A; 5-15 parts of material B; 2-8 parts of adhesive material; 2-6 parts of an anti-aging agent; 4-8 parts of an antiwear agent; the material A comprises a resin a and a color master batch A; the material B comprises a resin B and a color master batch B; the melting temperature of the resin a is less than that of the resin b; the preparation method comprises the following steps: and controlling the temperature of the extruder to be higher than the melting temperature of the material B and lower than the melting temperature of the material A, adding the material A and the material B into the extruder according to a formula, mixing and stirring, adding a bonding material, an anti-aging agent and an anti-wear agent, extruding, and cooling to obtain the synthetic leather with rich colors. The color-rich synthetic leather of the present application can be used to enrich the color of the synthetic leather.

Description

Synthetic leather with rich colors and preparation method thereof
Technical Field
The present application relates to the technical field of synthetic leather, and more particularly, to a color-rich synthetic leather and a method for preparing the same.
Background
Synthetic leather is a term for "dermis", also called artificial leather, synthetic leather. In the eighties of the last century, expensive leather clothing leather materials are not consumed by general people, and the imitation leather with leather is popular for a short time according to market demands, and is widely applied to clothing, bag making, furniture making and the like. Is also a solution for protecting animals by reducing animal fur in the market.
With the development of society, the older the aesthetic requirement of people on synthetic leather is, the more the synthetic leather on the market is single color, and the requirements of consumers on the aesthetic degree of the synthetic leather cannot be met, so that the synthetic leather with rich colors needs to be developed.
Disclosure of Invention
In order to enrich the color of the synthetic leather, the application provides the synthetic leather with rich color and a preparation method thereof.
In a first aspect, the present application provides a color-rich synthetic leather, which adopts the following technical scheme:
a kind of color-rich synthetic leather is made from the following raw materials by weight:
10-20 parts of a material A;
5-15 parts of material B;
2-8 parts of adhesive material;
2-6 parts of an anti-aging agent;
4-8 parts of an antiwear agent;
the material A comprises resin a and color master batch A in the mass ratio of (4-10) to (2-8);
the material B comprises resin B and color master B in the mass ratio of (4-10) to (2-8);
the melting temperature of the resin a is greater than the melting temperature of the resin b.
By adopting the technical scheme, since the material A comprises the resin a and the color masterbatch A, the resin a has the color of the color masterbatch A, and the resin B has the color of the color masterbatch B. Because the melting temperature of the resin a is smaller than that of the resin B, when the material A and the material B are mixed to prepare the synthetic leather, the mixing temperature can be set to be smaller than that of the resin a and larger than that of the resin B, at the moment, the resin a is in a softened and unmelted state, and the resin B is in a melted state, so that the resin a and the resin B are not completely and uniformly mixed when being mixed, the color of the color masterbatch A and the color masterbatch B are not integrated, and the color of the synthetic leather is rich.
Preferably, the resin a comprises a thermoplastic polyurethane resin having a melting temperature of 170 to 180 ℃, and the resin b comprises a polyvinyl chloride resin having a melting temperature of 150 to 160 ℃.
Through adopting above-mentioned technical scheme, can set up the mixed temperature to be less than resin a's melting temperature and be greater than resin B's melting temperature for resin a and resin B can not the complete misce bene when mixing, thereby make masterbatch A's colour and masterbatch B's colour can not melt as an organic wholely, and then make synthetic leather's colour abundant. The thermoplastic polyurethane resin and the polyvinyl chloride resin are widely applied, have low price and good mechanical properties.
Preferably, the bonding material comprises an acid etching agent and a bonding agent in the mass ratio of (1-7) to (2-10), wherein the acid etching agent comprises phosphoric acid or acetic acid or lactic acid, and the bonding agent comprises a polyurethane bonding agent or a phosphate bonding agent or a resin bonding agent.
By adopting the technical scheme, when the synthetic leather is prepared, the adhesive material is added into the synthetic leather, the surfaces of the resin a and the resin b can form concave-convex shapes after the acid etching agent is contacted with the resin a and the resin b, and then the adhesive agent is permeated into the concave-convex structure, so that the mechanical embedding force between the resin a and the resin b is improved, and the mechanical property of the synthetic leather is improved.
Preferably, the bonding material comprises a resin bonding agent, wherein the resin bonding agent is a modified resin bonding agent modified by mica powder, and the mass fraction of the mica powder in the modified resin bonding agent is 20-30%.
By adopting the technical scheme, the resin adhesive has better compatibility with the resin a and the resin b, and the mechanical property of the resin adhesive can be improved after the mica powder is dissolved in the resin adhesive.
Preferably, the particle size of the mica powder is 10 μm to 30. Mu.m.
By adopting the technical scheme, the mica powder in the particle size range has larger particle size, so that the viscosity of the mica powder after being dissolved in the resin adhesive can be increased, and the mechanical property of the resin adhesive is further improved.
Preferably, the material A and the material B are respectively pretreated material A and material B, and the pretreatment comprises the following steps: mixing hydroxyethyl methacrylate and the material A according to the mass ratio of (1-4) to (4-6) to obtain pretreated material A; mixing hydroxyethyl methacrylate and the material B according to the mass ratio of (1-4) to (4-6) to obtain the pretreated material B.
By adopting the technical scheme, the hydroxyethyl methacrylate has viscosity, and is easy to flow and permeate. The hydroxyethyl methacrylate can permeate into the material A and the material B, so that the material A and the material B have certain viscosity, the bonding material and the material A and the material B form closer combination, and the mechanical property of the synthetic leather is further improved.
In a second aspect, the present application provides a method for preparing a synthetic leather with rich colors, which adopts the following technical scheme:
a preparation method of color-rich synthetic leather comprises the following preparation steps:
s1, preparing a material A: according to the formula, firstly adding the resin a and the color master batch A into an extruder for melting and mixing uniformly, extruding and cooling to obtain a material A;
s2, preparing a material B: according to the formula, adding the resin B and the color master batch B into an extruder for melting and mixing uniformly, extruding and cooling to obtain a material B;
s3, blending: and controlling the temperature of the extruder to be lower than the melting temperature of the material A and higher than the melting temperature of the material B, adding the material A and the material B into the extruder according to a formula, mixing and stirring, adding a bonding material, an anti-aging agent and an anti-wear agent, extruding, and cooling to obtain the synthetic leather with rich colors.
Through adopting above-mentioned technical scheme, firstly through S1, mix resin a and masterbatch A evenly, make resin a evenly dye the colour of masterbatch A. And similarly, uniformly mixing the resin B and the color master B through S2, and uniformly dyeing the resin B with the color of the color master B. And through S3, the temperature of the extruder is set to be smaller than the melting temperature of the material A and larger than the melting temperature of the material B, the resin a is in a softened and unmelted state, and the resin B is in a melted state, so that the resin a and the resin B are not completely and uniformly mixed when being mixed, the color of the color masterbatch A and the color masterbatch B are not integrated, and the synthetic leather with rich colors is further formed. And then the mechanical properties of the material A and the material B are increased by adding the adhesive material, and the ageing resistance and the wear resistance of the synthetic leather are increased by adding the anti-ageing agent and the wear-resistant agent, so that the service life of the synthetic leather is prolonged.
Preferably, the addition sequence of the bonding material, the anti-aging agent and the anti-wear agent is the anti-aging agent, the anti-wear agent and the bonding material in sequence.
By adopting the technical scheme, the anti-aging agent and the anti-wear agent are added into the material A and the material B, so that the anti-aging agent and the anti-wear agent are firstly dispersed in the material A and the material B, and then the adhesive material is added, so that all raw materials of the synthetic leather are uniformly adhered together, and the mechanical property of the synthetic leather is further improved.
In summary, the present application has the following beneficial effects:
1. because the melting temperature of the resin a adopted by the application is less than that of the resin B, when the material A and the material B are mixed to prepare the synthetic leather, the mixing temperature can be set to be less than that of the resin a and greater than that of the resin B, at the moment, the resin a is in an unmelted state, and the resin B is in a melted state, so that the resin a and the resin B are not completely and uniformly mixed when being mixed, the color of the color masterbatch A and the color masterbatch B are not fused into a whole, and the color of the synthetic leather is rich.
2. When the synthetic leather is prepared, the adhesive material is added into the synthetic leather, the surfaces of the resin a and the resin b can form concave-convex shapes after the acid etching agent is contacted with the resin a and the resin b, and then the adhesive agent permeates into the concave-convex structure, so that the mechanical embedding force between the resin a and the resin b is improved, and the mechanical property of the synthetic leather is improved.
3. In the method, firstly, through S1, resin a and a color master A are uniformly mixed, so that the resin a is uniformly dyed with the color of the color master A; similarly, the resin B and the color master B are uniformly mixed through S2, so that the resin B is uniformly dyed with the color of the color master B; and S3, setting the temperature of the extruder to be lower than the melting temperature of the material A and higher than the melting temperature of the material B, wherein the resin a is in an unmelted state and the resin B is in a melted state, so that the resin a and the resin B are not completely and uniformly mixed when being mixed, the color of the color masterbatch A and the color masterbatch B are not integrated, and further the synthetic leather with rich colors is formed; and then the mechanical properties of the material A and the material B are increased by adding the adhesive material, and the ageing resistance and the wear resistance of the synthetic leather are increased by adding the anti-ageing agent and the wear-resistant agent, so that the service life of the synthetic leather is prolonged.
Detailed Description
The present application is described in further detail below with reference to examples.
Table 1 instruments according to embodiments of the present application
Figure DEST_PATH_IMAGE002
In the examples of the present application, the medicines used are shown in table 2:
table 2 pharmaceutical products according to embodiments of the present application
Figure DEST_PATH_IMAGE004
Preparation example of A Material
Preparation example 1: the material A of the preparation example is prepared by the following method:
14kg of thermoplastic polyurethane resin as a resin a and 10kg of color masterbatch A are added into an extruder, are melted and mixed for 15min at 200 ℃, and are cooled after extrusion to obtain a material A.
Preparation example 2: the material A of the preparation example is prepared by the following method:
firstly, adding 14kg of thermoplastic polyurethane resin serving as a resin a and 10kg of color masterbatch A into an extruder, carrying out melt mixing at 200 ℃ for 15min, then adding 16kg of hydroxyethyl methacrylate, mixing and stirring for 5min, and cooling to obtain pretreated material A.
Preparation example of material B
Preparation example 3: the material B of the preparation example is prepared by the following method:
firstly, adding 14kg of polyvinyl chloride resin serving as a resin B and 10kg of color masterbatch B into an extruder, carrying out melt mixing for 15min at 180 ℃, extruding, and cooling to obtain a material B.
Preparation example 4: the material B of the preparation example is prepared by the following method:
firstly, adding 14kg of polyvinyl chloride resin serving as a resin B and 10kg of color masterbatch B into an extruder, carrying out melt mixing at 110 ℃ for 15min, adding 16kg of hydroxyethyl methacrylate, mixing and stirring for 5min, and cooling to obtain a pretreated material B.
Preparation example of adhesive Material
Preparation example 5: the adhesive material of the preparation example is prepared by the following method:
mixing and stirring 4kg of phosphoric acid serving as an acid etching agent and 6kg of polyurethane adhesive serving as an adhesive for 5min at a rotating speed of 150r/min to obtain an adhesive material.
Preparation example 6: the adhesive material of this preparation example is different from that of preparation example 5 in that:
the preparation example adopts acetic acid instead of phosphoric acid as the acid etching agent.
Preparation example 7: the adhesive material of this preparation example is different from that of preparation example 5 in that:
the preparation example adopts lactic acid instead of phosphoric acid as the acid etching agent.
Preparation example 8: the adhesive material of this preparation example is different from that of preparation example 5 in that:
in the preparation example, phosphate adhesive is adopted to replace polyurethane adhesive as adhesive.
Preparation example 9: the adhesive material of this preparation example is different from that of preparation example 5 in that:
the preparation example adopts resin adhesive instead of polyurethane adhesive as adhesive.
Preparation example 10: the adhesive material of this preparation example is different from that of preparation example 9 in that:
the resin adhesive of the preparation example is a modified resin adhesive modified by mica powder, and the modification steps are as follows: mixing and stirring 2kg of mica powder which is sieved by a 30 mu m sieve and is not sieved by a 10 mu m sieve with 8kg of resin adhesive for 6min at the rotating speed of 100r/min to obtain the modified resin adhesive.
Preparation example 11: the adhesive material of this preparation example is different from that of preparation example 10 in that:
the mica powder of this preparation example was a mica powder which had been sieved with a 5 μm sieve and which had not been sieved with a 1 μm sieve, i.e., a mica powder having a particle diameter of 1 to 5. Mu.m.
Preparation example 12: the adhesive material of this preparation example is different from that of preparation example 10 in that:
the mica powder of this preparation example was 2.5kg, and the resin binder was 7.5kg.
Preparation example 13: the adhesive material of this preparation example is different from that of preparation example 10 in that:
the mica powder of this preparation example was 3kg, and the resin binder was 7kg.
Examples
Example 1: a color-rich synthetic leather comprising 10kg of the material A of preparation example 1, 5kg of the material B of preparation example 3, 2kg of the adhesive material of preparation example 5, 2kg of the anti-aging agent and 4kg of the anti-wear agent.
A preparation method of a synthetic leather with rich colors comprises the following steps:
the temperature of the extruder is controlled to be 165 ℃, so that the temperature of the extruder is higher than the melting temperature of the material B and lower than the melting temperature of the material A, then 10kg of the material A of the preparation example 1 and 5kg of the material B of the preparation example 3 are added into the extruder according to the formula, and after mixing and stirring for 15min, 2kg of the bonding material, 2kg of the anti-aging agent and 4kg of the wear-resistant agent of the preparation example 5 are added in sequence, and the synthetic leather with rich colors is obtained after extrusion and cooling.
Example 2: a color-rich synthetic leather comprising 15kg of the material A of preparation example 1, 10kg of the material B of preparation example 3, 5kg of the adhesive material of preparation example 5, 4kg of the anti-aging agent and 6kg of the anti-wear agent.
A preparation method of a synthetic leather with rich colors comprises the following steps:
the temperature of the extruder is controlled to be 165 ℃, so that the temperature of the extruder is higher than the melting temperature of the material B and lower than the melting temperature of the material A, then 15kg of the material A of the preparation example 1 and 10kg of the material B of the preparation example 3 are added into the extruder according to the formula, 5kg of the bonding material, 4kg of the anti-aging agent and 6kg of the wear-resistant agent are added into the extruder after mixing and stirring for 15min, and the color-rich synthetic leather is obtained after extrusion and cooling.
Example 3: a color-rich synthetic leather comprising 20kg of the material A of preparation example 1, 15kg of the material B of preparation example 3, 8kg of the adhesive material of preparation example 5, 6kg of the anti-aging agent and 8kg of the anti-wear agent.
A preparation method of a synthetic leather with rich colors comprises the following steps:
the temperature of the extruder is controlled to be 165 ℃, so that the temperature of the extruder is higher than the melting temperature of the material B and lower than the melting temperature of the material A, then 20kg of the material A of the preparation example 1 and 15kg of the material B of the preparation example 3 are added into the extruder according to the formula, 8kg of the bonding material, 6kg of the anti-aging agent and 8kg of the wear-resistant agent are added into the extruder after mixing and stirring for 15min, and the color-rich synthetic leather is obtained after extrusion and cooling.
Example 4: example 4 differs from example 2 in that:
in example 4, the adhesive, the anti-aging agent and the anti-wear agent were added in this order.
Examples 5 to 15: examples 5-15 differ from example 2 in the materials selected, as shown in Table 3 below:
TABLE 3 selection of raw materials in example 2, examples 5-15
Figure DEST_PATH_IMAGE006
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Comparative example
Comparative example 1: this comparative example differs from example 15 in that:
the thermoplastic polyurethane resin is selected as the resin a in the material A and the resin B in the material B of the comparative example.
Comparative example 2: this comparative example differs from example 15 in that:
no adhesive material was added in this comparative example.
Performance test
The detection method of the mechanical property comprises the step of measuring the tensile load and the elongation at break according to the standard GB/T38612-2020 artificial leather test method.
Color richness: and (5) observing the mixture by naked eyes.
Table 4 performance test table
Figure DEST_PATH_IMAGE008
Examples 1 to 3 were compared, examples 1 to 3 were different in the ratio of the raw materials for the synthetic leather having rich colors, and since example 2 had the highest elongation at break, the mechanical properties of example 2 were the best, and thus the ratio of the raw materials in example 2 was the best.
Example 4 and example 2 were compared, and the difference between example 4 and example 2 is that the addition order of the adhesive material, the anti-aging agent and the anti-wear agent in example 4 was the anti-aging agent, the anti-wear agent and the adhesive material in this order. Since example 4 has a high elongation at break, example 4 has a good mechanical property, and thus the order of addition of the anti-aging agent, the anti-wear agent, and the adhesive material in example 4 is better.
Comparing example 5 with example 2, both example 5 and example 2 use the material B of preparation example 3, the difference between example 5 and example 2 is that the material A of preparation example 2 and example 1 are added to the color-rich synthetic leather in order of example 5 and example 2, the difference between preparation example 2 and preparation example 1 is that the material A of preparation example 2 is the material A pretreated by hydroxyethyl methacrylate, and the elongation at break of example 5 is higher, so the mechanical property of example 5 is stronger, which indicates that the material A pretreated in the present application is better.
Comparing example 6 with example 2, the difference between example 6 and example 2 is that the materials B of example 6 and example 2 are added into the synthetic leather with rich colors by adopting the materials B of preparation example 4 and preparation example 3 in sequence, the materials B of preparation example 4 and preparation example 3 are the materials B pretreated by hydroxyethyl methacrylate, and the elongation at break of example 6 is higher, so the mechanical property of example 6 is stronger, which indicates that the pretreated materials B are better in the application.
Comparing example 7 with example 6, both example 6 and example 7 use the material B of preparation example 4, the difference between example 7 and example 6 is that the material A of preparation example 2 and preparation example 1 are sequentially used in example 7 and example 6 to be added into mechanical plastic, the difference between preparation example 2 and preparation example 1 is that the material A of preparation example 2 is the material A pretreated by hydroxyethyl methacrylate, and the elongation at break of example 7 is higher, so the mechanical property of example 7 is stronger, and further the material A pretreated in the application is better.
Examples 8 to 9 were compared with example 7, examples 8 to 9 were different from example 7 in that examples 8 to 9 and example 7 were sequentially added to color-rich synthetic leather using the bonding materials of preparation examples 6 to 7 and preparation example 5, and the bonding materials of preparation examples 6 to 7 were different from the bonding material of preparation example 5 in that preparation examples 6 to 7 were sequentially used acetic acid and lactic acid instead of phosphoric acid of preparation example 5 as acid etching agents, and elongation at break of example 7 was higher, so that mechanical properties of example 7 were stronger, indicating that phosphoric acid was used as acid etching agents in the present application to be better.
Examples 10 to 11 were compared with example 7, examples 10 to 11 were different from example 7 in that examples 10 to 11 and example 7 were sequentially added to color-rich synthetic leather using the adhesive materials of preparation examples 8 to 9 and preparation example 5, and preparation examples 8 to 9 were different from preparation example 5 in that preparation examples 8 to 9 were sequentially applied with phosphate-based adhesive and resin adhesive instead of polyurethane adhesive as adhesive, and elongation at break of example 11 was higher, so that mechanical properties of example 11 were stronger, indicating that the use of resin adhesive as adhesive in this application was more preferable.
Comparing example 12 with example 11, the difference between example 12 and example 11 is that the adhesive materials of preparation 10 and preparation 9 are added to the color-rich synthetic leather in order of example 12 and example 11, and the difference between preparation 10 and preparation 9 is that the resin adhesive of preparation 10 is a modified resin adhesive modified by mica powder, and the elongation at break of example 12 is higher, so the mechanical properties of example 12 are stronger, indicating that the modified resin adhesive modified by mica powder is better as adhesive in the present application.
Comparing example 13 with example 12, the difference between example 13 and example 12 is that the binding materials of preparation 11 and preparation 10 are added to the color-rich synthetic leather in order of example 13 and example 12, and the difference between preparation 11 and preparation 10 is that the particle size of mica powder is different, and the elongation at break of example 12 is higher, so that the mechanical properties of example 12 are stronger, indicating that the use of mica powder with particle size of 10 μm to 30 μm is better in the present application.
Comparing examples 14-15 with example 12, examples 14-15 differ from example 12 in that examples 14-15 and example 12 are sequentially prepared from the adhesive materials of preparation examples 12-13 and preparation example 10, and the adhesive materials of preparation examples 12-13 and preparation example 10 differ in that the ratio of mica powder to resin adhesive in the modified resin adhesive is different, and the elongation at break of example 15 is higher, so that the mechanical properties of example 15 are stronger, indicating that the ratio of mica powder to resin adhesive in example 15 in the present application is better.
Comparing comparative example 1 with example 15, the difference between comparative example 1 and example 15 is that thermoplastic polyurethane resin is selected for the resin a in the material A and the resin B in the material B of comparative example 1, and the resins with the same melting temperature, and the technical scheme of the application is better because the color richness of comparative example 1 is single.
Finally, comparative example 2 was compared with example 15, and the difference between comparative example 2 and example 15 is that no adhesive material was added in comparative example 2, and the mechanical properties of comparative example 2 were weaker because of the lower elongation at break of comparative example 2, indicating that the technical solution in this application is better.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims (1)

1. The preparation method of the synthetic leather with rich colors is characterized by comprising the following preparation steps:
s1, preparing a material A: adding resin a and color master A with the mass ratio of (4-10) to (2-8) into an extruder, melting and mixing uniformly, extruding and cooling to obtain a material A; the resin a comprises thermoplastic polyurethane resin with a melting temperature of 170-180 ℃; mixing hydroxyethyl methacrylate and the material A according to the mass ratio of (1-4) to (4-6) to obtain pretreated material A;
s2, preparing a material B: adding resin B and color masterbatch B with the mass ratio of (4-10) to (2-8) into an extruder, melting and mixing uniformly, extruding and cooling to obtain a material B; the resin b comprises polyvinyl chloride resin with the melting temperature of 150-160 ℃; mixing hydroxyethyl methacrylate and the material B according to the mass ratio of (1-4) to (4-6) to obtain a pretreated material B;
s3, blending: controlling the temperature of the extruder to be higher than the melting temperature of the material B and lower than the melting temperature of the material A, adding 10-20 parts of pretreated material A and 5-15 parts of pretreated material B into the extruder according to a formula, mixing and stirring, adding 2-8 parts of bonding material, 2-6 parts of anti-aging agent and 4-8 parts of wear-resisting agent, extruding and cooling to obtain colorful synthetic leather;
the bonding material comprises an acid etching agent and a bonding agent in the mass ratio of (1-7) to (2-10), wherein the acid etching agent comprises phosphoric acid or acetic acid or lactic acid, the bonding agent is a resin bonding agent, the model is ZBL-910, the manufacturer is the Buddha bonding technology Co., ltd, the resin bonding agent is a modified resin bonding agent modified by mica powder, and the mass fraction of the mica powder in the modified resin bonding agent is 20-30%; the particle size of the mica powder is 10-30 mu m.
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CN111016232A (en) * 2019-12-27 2020-04-17 昆山阿基里斯新材料科技有限公司 Preparation method of artificial leather with color change and product thereof
CN111393829B (en) * 2020-04-21 2021-09-17 东莞市雄林新材料科技股份有限公司 TPU film for express packaging and preparation method thereof
CN113322693A (en) * 2021-05-26 2021-08-31 广东菲安妮皮具股份有限公司 Waterproof and oil-proof leather and preparation method thereof

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