CN113845872B - Adhesive for flocking and flocking process - Google Patents
Adhesive for flocking and flocking process Download PDFInfo
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- CN113845872B CN113845872B CN202111157677.2A CN202111157677A CN113845872B CN 113845872 B CN113845872 B CN 113845872B CN 202111157677 A CN202111157677 A CN 202111157677A CN 113845872 B CN113845872 B CN 113845872B
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses an adhesive for flocking and a flocking process, wherein the adhesive for flocking comprises the following raw materials in parts by weight: ethylene-vinyl acetate copolymer: 10-50 parts; thermoplastic polyurethane elastomer: 70-100 parts; terpene resin: 3-15 parts; calcium carbonate: 2-8 parts; dimethyl phthalate: 1-5 parts; viscosity modifier: 3-8 parts; antioxidant: 0.5-3 parts. The adhesive for flocking can effectively improve the flocking fastness in the flocking processing process.
Description
Technical Field
The invention belongs to the technical field of flocking, and particularly relates to an adhesive for flocking and a flocking process.
Background
The adhesive is one of the necessary raw materials in the existing flocking processing process, the existing flocking adhesive is mostly aqueous acrylic acid and acetic acid type aqueous adhesive, but the existing aqueous adhesive needs dehydration and solidification in the process of flocking processing, the requirement on the drying process is strict, the drying curve and the drying temperature need to be strictly controlled in the solidification process, and the defect of low fastness exists.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the adhesive for flocking and the flocking process, and the adhesive for flocking can effectively improve the flocking fastness in the flocking processing process.
The technical purpose of the invention is realized by the following technical scheme:
the adhesive for flocking comprises the following raw materials in parts by weight: ethylene-vinyl acetate copolymer: 10-50 parts; thermoplastic polyurethane elastomer: 70-100 parts; terpene resin: 3-15 parts; calcium carbonate: 2-8 parts; dimethyl phthalate: 1-5 parts; viscosity modifier: 3-8 parts; antioxidant: 0.5-3 parts.
Preferably, the mass ratio of the ethylene-vinyl acetate copolymer to the thermoplastic polyurethane elastomer is (1-3): (7-9).
Further preferably, the mass ratio of the ethylene-vinyl acetate copolymer to the thermoplastic polyurethane elastomer is 2:8.
preferably, the mass of the calcium carbonate accounts for 4-6% of the sum of the mass of the ethylene-vinyl acetate copolymer and the mass of the thermoplastic polyurethane elastomer.
Further preferably, the mass of the calcium carbonate accounts for 5% of the sum of the mass of the ethylene-vinyl acetate copolymer and the mass of the thermoplastic polyurethane elastomer.
Further preferably, the calcium carbonate is nano calcium carbonate, and the particle size of the calcium carbonate is 50-100 nm.
Preferably, the mass of the terpene resin accounts for 4 to 12 percent of the sum of the mass of the ethylene-vinyl acetate copolymer and the mass of the thermoplastic polyurethane elastomer.
Further preferably, the mass of the terpene resin accounts for 8% of the sum of the masses of the ethylene-vinyl acetate copolymer and the thermoplastic polyurethane elastomer.
Preferably, the mass of the dimethyl phthalate accounts for 2 to 4 percent of the sum of the mass of the ethylene-vinyl acetate copolymer and the mass of the thermoplastic polyurethane elastomer.
Further preferably, the mass of the dimethyl phthalate accounts for 3% of the sum of the mass of the ethylene-vinyl acetate copolymer and the mass of the thermoplastic polyurethane elastomer.
Preferably, the viscosity modifier is a microcrystalline wax.
Preferably, the antioxidant is a hindered phenol antioxidant.
More preferably, the antioxidant is basf 1010.
A method for preparing the adhesive for flocking, which comprises the following steps: mixing the ethylene-vinyl acetate copolymer, the thermoplastic polyurethane elastomer, the terpene resin, the calcium carbonate, the dimethyl phthalate, the viscosity regulator and the antioxidant according to the formula ratio, heating and stirring, mixing and extruding to obtain the thermoplastic polyurethane elastomer.
Preferably, the temperature after heating is 140-150 ℃, and the mixing time is 8-15 minutes.
A flocking process comprises the following steps:
(1) Unreeling, namely unreeling the base fabric and preheating the base fabric;
(2) Coating adhesive, namely coating the adhesive for flocking on one surface of the base fabric to be flocked;
(3) Flocking, namely flocking is carried out on one side of the base fabric coated with the adhesive through static electricity;
(4) Cooling, namely cooling the flocked cloth;
(5) And (4) winding, namely winding and storing the cooled cloth.
Preferably, after unwinding, the substrate is preheated by a preheating roller before applying the adhesive, and the preheating temperature is 140-160 ℃.
Preferably, after the adhesive is coated, the adhesive is coated by continuous irradiation of infrared rays, and the adhesive is heated and insulated, so that the surface viscosity and the molten state of the adhesive surface can be ensured to reach the optimal flocking state after entering a flocking chamber.
Preferably, in the step (3), the flocking is performed in a direction from bottom to top.
Preferably, in the step (3), the flocking temperature is 120-150 ℃.
Preferably, in the step (4), the non-flocked surface of the fabric is cooled to 60-80 ℃ by a cooling roller, the flocked surface of the fabric is cooled to 80-90 ℃ by an air cooler, and then the flocked surface of the fabric enters a multi-roller cooling area to be continuously cooled to 40-50 ℃.
The invention has the beneficial effects that:
(1) The adhesive for flocking can effectively improve the flocking fastness in the flocking processing process by matching the specific components in proportion, and by matching with the specific flocking process, the dry friction times can reach more than 10000 times and the wet friction times can reach more than 12000 times in the flocking fastness test, and the flocking fastness is far greater than that of the adhesive for flocking, which is sold in the market and takes water-based acrylic acid as the main component;
(2) The adhesive for flocking is a hot-melt adhesive, no volatile or derivative harmful or waste is generated in the fusing process, the temperature range is controlled within 200 ℃, and the whole process is safe and environment-friendly.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1:
the adhesive for flocking comprises the following raw materials in parts by weight: ethylene-vinyl acetate copolymer: 10 parts of a binder; thermoplastic polyurethane elastomer: 100 parts of (A); terpene resin: 15 parts of (1); nano calcium carbonate: 8 parts; dimethyl phthalate: 5 parts of a mixture; microcrystalline wax: 8 parts; basf 1010: and 3 parts.
The preparation method of the adhesive for flocking comprises the following steps: adding the ethylene-vinyl acetate copolymer, the thermoplastic polyurethane elastomer, the terpene resin, the nano calcium carbonate, the dimethyl phthalate, the microcrystalline wax and the Basff 1010 into a constant-temperature glue making machine, keeping the temperature at 140 ℃, uniformly stirring, mixing for 15 minutes and extruding for later use.
Example 2:
the adhesive for flocking comprises the following raw materials in parts by weight: ethylene-vinyl acetate copolymer: 50 parts of a binder; thermoplastic polyurethane elastomer: 70 parts of (B); terpene resin: 3 parts of a mixture; nano calcium carbonate: 2 parts of a mixture; dimethyl phthalate: 1 part; microcrystalline wax: 3 parts of a mixture; basf 1010:0.5 part.
The preparation method of the adhesive for flocking comprises the following steps: adding the ethylene-vinyl acetate copolymer, the thermoplastic polyurethane elastomer, the terpene resin, the nano calcium carbonate, the dimethyl phthalate, the microcrystalline wax and the Basf 1010 into a constant-temperature glue making machine, keeping the temperature at 150 ℃, uniformly stirring, mixing for 8 minutes and extruding for later use.
Example 3:
the adhesive for flocking comprises the following raw materials in parts by weight: ethylene-vinyl acetate copolymer: 20 parts of (1); thermoplastic polyurethane elastomer: 80 parts of a binder; terpene resin: 8 parts of a mixture; nano calcium carbonate: 5 parts of a mixture; dimethyl phthalate: 3 parts of a mixture; microcrystalline wax: 5 parts of a mixture; basf 1010:1 part.
The preparation method of the adhesive for flocking comprises the following steps: adding the ethylene-vinyl acetate copolymer, the thermoplastic polyurethane elastomer, the terpene resin, the nano calcium carbonate, the dimethyl phthalate, the microcrystalline wax and the Basff 1010 into a constant-temperature glue making machine, keeping the temperature at 145 ℃, uniformly stirring, mixing for 10 minutes and extruding for later use.
Example 4:
the adhesive for flocking comprises the following raw materials in parts by weight: ethylene-vinyl acetate copolymer: 30 parts of a binder; thermoplastic polyurethane elastomer: 70 parts of (B); terpene resin: 4 parts of a mixture; nano calcium carbonate: 4 parts of a mixture; dimethyl phthalate: 2 parts of a mixture; microcrystalline wax: 6 parts of (1); basf 1010: and 2 parts.
The preparation method of the adhesive for flocking comprises the following steps: adding the ethylene-vinyl acetate copolymer, the thermoplastic polyurethane elastomer, the terpene resin, the nano calcium carbonate, the dimethyl phthalate, the microcrystalline wax and the Basff 1010 into a constant-temperature glue making machine, keeping the temperature at 145 ℃, uniformly stirring, mixing for 10 minutes and extruding for later use.
Example 5:
the adhesive for flocking comprises the following raw materials in parts by weight: ethylene-vinyl acetate copolymer: 10 parts of (A); thermoplastic polyurethane elastomer: 90 parts of a mixture; terpene resin: 12 parts of (1); nano calcium carbonate: 6 parts of (1); dimethyl phthalate: 4 parts; microcrystalline wax: 5 parts of a mixture; basf 1010:1 part.
The preparation method of the adhesive for flocking comprises the following steps: adding the ethylene-vinyl acetate copolymer, the thermoplastic polyurethane elastomer, the terpene resin, the nano calcium carbonate, the dimethyl phthalate, the microcrystalline wax and the Basff 1010 into a constant-temperature glue making machine, keeping the temperature at 145 ℃, uniformly stirring, mixing for 10 minutes and extruding for later use.
Example 6:
the adhesive for flocking comprises the following raw materials in parts by weight: ethylene-vinyl acetate copolymer: 20 parts of (1); thermoplastic polyurethane elastomer: 80 parts of a mixture; terpene resin: 8 parts of a mixture; nano calcium carbonate: 3 parts of a mixture; dimethyl phthalate: 3 parts of a mixture; microcrystalline wax: 5 parts of a mixture; basf 1010:1 part.
The preparation method of the adhesive for flocking comprises the following steps: adding the ethylene-vinyl acetate copolymer, the thermoplastic polyurethane elastomer, the terpene resin, the nano calcium carbonate, the dimethyl phthalate, the microcrystalline wax and the Basff 1010 into a constant-temperature glue making machine, keeping the temperature at 145 ℃, uniformly stirring, mixing for 10 minutes and extruding for later use.
Example 7:
the adhesive for flocking comprises the following raw materials in parts by weight: ethylene-vinyl acetate copolymer: 20 parts of a binder; thermoplastic polyurethane elastomer: 80 parts of a binder; terpene resin: 8 parts; nano calcium carbonate: 7 parts; dimethyl phthalate: 3 parts of a mixture; microcrystalline wax: 5 parts of a mixture; basf 1010:1 part.
The preparation method of the adhesive for flocking comprises the following steps: adding the ethylene-vinyl acetate copolymer, the thermoplastic polyurethane elastomer, the terpene resin, the nano calcium carbonate, the dimethyl phthalate, the microcrystalline wax and the Basff 1010 into a constant-temperature glue making machine, keeping the temperature at 145 ℃, uniformly stirring, mixing for 10 minutes and extruding for later use.
Example 8:
the adhesive for flocking comprises the following raw materials in parts by weight: ethylene-vinyl acetate copolymer: 20 parts of (1); thermoplastic polyurethane elastomer: 80 parts of a mixture; terpene resin: 3 parts of a mixture; nano calcium carbonate: 5 parts of a mixture; dimethyl phthalate: 3 parts of a mixture; microcrystalline wax: 5 parts of a mixture; basf 1010:1 part.
The preparation method of the adhesive for flocking comprises the following steps: adding the ethylene-vinyl acetate copolymer, the thermoplastic polyurethane elastomer, the terpene resin, the nano calcium carbonate, the dimethyl phthalate, the microcrystalline wax and the Basf 1010 into a constant-temperature glue making machine, keeping the temperature at 145 ℃, uniformly stirring, mixing for 10 minutes and extruding for later use.
Example 9:
the adhesive for flocking comprises the following raw materials in parts by weight: ethylene-vinyl acetate copolymer: 20 parts of a binder; thermoplastic polyurethane elastomer: 80 parts of a binder; terpene resin: 13 parts of (1); nano calcium carbonate: 5 parts of a mixture; dimethyl phthalate: 3 parts of a mixture; microcrystalline wax: 5 parts of a mixture; basf 1010:1 part.
The preparation method of the adhesive for flocking comprises the following steps: adding the ethylene-vinyl acetate copolymer, the thermoplastic polyurethane elastomer, the terpene resin, the nano calcium carbonate, the dimethyl phthalate, the microcrystalline wax and the Basff 1010 into a constant-temperature glue making machine, keeping the temperature at 145 ℃, uniformly stirring, mixing for 10 minutes and extruding for later use.
Example 10:
the adhesive for flocking comprises the following raw materials in parts by weight: ethylene-vinyl acetate copolymer: 20 parts of a binder; thermoplastic polyurethane elastomer: 80 parts of a mixture; terpene resin: 8 parts of a mixture; nano calcium carbonate: 5 parts of a mixture; dimethyl phthalate: 1.5 parts; microcrystalline wax: 5 parts of a mixture; basf 1010:1 part.
The preparation method of the adhesive for flocking comprises the following steps: adding the ethylene-vinyl acetate copolymer, the thermoplastic polyurethane elastomer, the terpene resin, the nano calcium carbonate, the dimethyl phthalate, the microcrystalline wax and the Basff 1010 into a constant-temperature glue making machine, keeping the temperature at 145 ℃, uniformly stirring, mixing for 10 minutes and extruding for later use.
Example 11:
the adhesive for flocking comprises the following raw materials in parts by weight: ethylene-vinyl acetate copolymer: 20 parts of (1); thermoplastic polyurethane elastomer: 80 parts of a binder; terpene resin: 8 parts of a mixture; nano calcium carbonate: 5 parts of a mixture; dimethyl phthalate: 4.5 parts; microcrystalline wax: 5 parts of a mixture; basf 1010:1 part.
The preparation method of the adhesive for flocking comprises the following steps: adding the ethylene-vinyl acetate copolymer, the thermoplastic polyurethane elastomer, the terpene resin, the nano calcium carbonate, the dimethyl phthalate, the microcrystalline wax and the Basff 1010 into a constant-temperature glue making machine, keeping the temperature at 145 ℃, uniformly stirring, mixing for 10 minutes and extruding for later use.
Comparative example 1:
the main component of a commercially available adhesive for flocking is water-based acrylic acid.
Test example:
the adhesive for flocking of examples 1 to 11 and comparative example 1 were used for flocking, the base fabric for flocking was dacron oxford fabric with a specification of 300 x 300d 64 x 46 and a width of 1500mm, the fluff powder for flocking was nylon 66 with a specification of 1.5d x 0.6mm, and the specific flocking process included the following steps:
(1) Unreeling, namely unreeling the base fabric, and preheating the base fabric at the preheating temperature of 140 ℃;
(2) Coating an adhesive, namely coating a roll type adhesive, coating the adhesive for flocking on one side of the base fabric needing flocking, wherein the coating amount is 140 g/square meter, and continuously irradiating the side coated with the adhesive by infrared rays to heat and preserve the temperature, so that the surface viscosity and the molten state of the adhesive can reach the optimal flocking state after entering a flocking chamber;
(3) Flocking, in which the fluff powder flies and rises from bottom to top through static electricity in a flocking chamber, the flocking is finished by inserting the fluff powder into an adhesive through inertia, the flocking time is 5 seconds, the moving speed of the base fabric is 14m/min, and the temperature of the flocking chamber is 120 ℃;
(4) Cooling, namely cooling the flocked fabric, cooling the non-flocked side of the fabric to 70 ℃ through a cooling roller, cooling the adhesive on the flocked side of the fabric to 85 ℃ through an air cooler, and then entering a multi-roller cooling area to continue cooling to 45 ℃;
(5) And (6) rolling, namely rolling and storing the cooled cloth.
Flocked cloths made with the flocking adhesives of examples 1-11 and comparative example 1 were tested for flock fastness according to FZ-T64011-2001 electrostatic flocking fabric industry standard, using a abrasion resistance tester, a martindale abrasion tester model YG401E-4, manufactured by second textile machinery works, changzhou, with the test results shown in table 1.
Table 1: flocking fastness test result
| Number of dry rubs | Number of wet rubs | |
| Example 1 | 10264 | 12031 |
| Example 2 | 11238 | 12956 |
| Example 3 | 17531 | 19875 |
| Example 4 | 16657 | 18521 |
| Example 5 | 16184 | 17239 |
| Example 6 | 13548 | 14658 |
| Example 7 | 12206 | 13239 |
| Example 8 | 15031 | 16441 |
| Example 9 | 14699 | 16354 |
| Example 10 | 15364 | 16531 |
| Example 11 | 15642 | 16895 |
| Comparative example 1 | 7968 | 8621 |
As can be seen from Table 1, when the adhesive for flocking is used for flocking processing, the dry friction times can reach more than 10000 times and the wet friction times can reach more than 12000 by matching with the specific flocking process, the flocking fastness is far greater than that of the adhesive (comparative example 1) for flocking, which is commercially available and has the main component of water-based acrylic acid, and the flocking fastness in the flocking processing process can be effectively improved.
Meanwhile, as can be seen from comparison of examples 1 to 2 with examples 3 to 11, when the mass ratio of the ethylene-vinyl acetate copolymer to the thermoplastic polyurethane elastomer in the adhesive for flocking of the present application is (1 to 3): (7-9), the flocking agent has better flocking fastness when being used for flocking, and the dry friction times can reach over 12000 times, and the wet friction times can reach over 13000 times.
As can be seen from comparison of examples 3 to 5 with examples 6 to 11, when the mass ratio of the ethylene-vinyl acetate copolymer to the thermoplastic polyurethane elastomer in the adhesive for flocking of the present application is (1 to 3): (7-9), the mass of the calcium carbonate accounts for 4-6% of the sum of the mass of the ethylene-vinyl acetate copolymer and the thermoplastic polyurethane elastomer, the mass of the terpene resin accounts for 4-12% of the sum of the mass of the ethylene-vinyl acetate copolymer and the thermoplastic polyurethane elastomer, and the mass of the dimethyl phthalate accounts for 2-4% of the sum of the mass of the ethylene-vinyl acetate copolymer and the thermoplastic polyurethane elastomer, so that the flocking fastness is better when the flocking agent is used for flocking, the dry friction times can reach more than 16000 times, and the wet friction times can reach more than 17000 times.
It is known from the comparison between example 3 and examples 6 to 7 that the flock fastness when applied to flock is reduced when the ratio of the mass of calcium carbonate to the sum of the mass of ethylene-vinyl acetate copolymer and thermoplastic polyurethane elastomer is not 4 to 6% without changing the other components and amounts of the adhesive used for flock.
It is understood from the comparison between example 3 and examples 8 to 9 that, when the ratio of the mass of the terpene resin to the sum of the mass of the ethylene-vinyl acetate copolymer and the mass of the thermoplastic polyurethane elastomer is not 4 to 12% on the premise that the other components and the amount of the adhesive for flocking are not changed, the flocking fastness when used for flocking is lowered.
It can be seen from the comparison between example 3 and examples 10-11 that the flocking fastness when used for flocking is reduced when the ratio of the mass of dimethyl phthalate to the sum of the mass of the ethylene-vinyl acetate copolymer and the mass of the thermoplastic polyurethane elastomer is not 2-4% under the precondition that other components and the amount of the flocking binder are not changed.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. An adhesive for flocking, characterized in that: the feed comprises the following raw materials in parts by weight:
ethylene-vinyl acetate copolymer: 10-50 parts;
thermoplastic polyurethane elastomer: 70-100 parts;
terpene resin: 3-15 parts;
calcium carbonate: 2-8 parts;
dimethyl phthalate: 1-5 parts;
viscosity modifier: 3-8 parts;
antioxidant: 0.5-3 parts.
2. An adhesive for flocking according to claim 1, wherein: the mass ratio of the ethylene-vinyl acetate copolymer to the thermoplastic polyurethane elastomer is (1-3): (7-9).
3. An adhesive for flocking according to claim 2, wherein: the mass of the calcium carbonate accounts for 4-6% of the sum of the mass of the ethylene-vinyl acetate copolymer and the mass of the thermoplastic polyurethane elastomer.
4. An adhesive for flocking according to claim 3, wherein: the mass of the terpene resin accounts for 4-12% of the sum of the mass of the ethylene-vinyl acetate copolymer and the mass of the thermoplastic polyurethane elastomer.
5. An adhesive for flocking according to claim 4, wherein: the mass of the dimethyl phthalate accounts for 2-4% of the sum of the mass of the ethylene-vinyl acetate copolymer and the mass of the thermoplastic polyurethane elastomer.
6. An adhesive for flocking according to claim 1, wherein: the viscosity modifier is microcrystalline wax.
7. A method for preparing the adhesive for flocking as defined in any one of claims 1 to 6, characterized in that: the method comprises the following steps: mixing the ethylene-vinyl acetate copolymer, the thermoplastic polyurethane elastomer, the terpene resin, the calcium carbonate, the dimethyl phthalate, the viscosity regulator and the antioxidant according to the formula ratio, heating and stirring, mixing and extruding to obtain the product.
8. A flocking process is characterized in that: the method comprises the following steps:
(1) Unreeling, namely unreeling the base fabric and preheating the base fabric;
(2) Applying an adhesive to the side of the substrate to be flocked, applying the adhesive for flocking according to any one of claims 1 to 6;
(3) Flocking, namely flocking is carried out on one side of the base fabric coated with the adhesive through static electricity;
(4) Cooling, namely cooling the flocked cloth;
(5) And (6) rolling, namely rolling and storing the cooled cloth.
9. A flocking process according to claim 8 wherein: in the step (3), the flocking direction is from bottom to top.
10. A flocking process according to claim 8 wherein: in the step (3), the flocking temperature is 120-150 ℃.
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| CN113845872A (en) | 2021-12-28 |
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