CN113047058A - Damping cloth with good wear resistance and preparation method thereof - Google Patents
Damping cloth with good wear resistance and preparation method thereof Download PDFInfo
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- CN113047058A CN113047058A CN202110260945.7A CN202110260945A CN113047058A CN 113047058 A CN113047058 A CN 113047058A CN 202110260945 A CN202110260945 A CN 202110260945A CN 113047058 A CN113047058 A CN 113047058A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0068—Polymeric granules, particles or powder, e.g. core-shell particles, microcapsules
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/108—Slipping, anti-blocking, low friction
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/14—Properties of the materials having chemical properties
- D06N2209/142—Hydrophobic
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/14—Properties of the materials having chemical properties
- D06N2209/146—Soilproof, soil repellent
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1671—Resistance to bacteria, mildew, mould, fungi
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1685—Wear resistance
Abstract
The invention discloses damping cloth with good wear resistance, which comprises primary backing cloth and wear-resistant paint; the invention also discloses a preparation method of the damping cloth with good wear resistance, which comprises the following steps: firstly, unwinding a primary backing, and immersing the primary backing into a water immersion tank through a cloth storage rack, wherein the water immersion tank contains the following components in a mass ratio of 1: 100 anionic surfactant and water, then squeezing the water in the base cloth by a squeezing roll, and ironing the base cloth to be semi-dry by an ironing wheel; and secondly, placing the semi-dry primary backing cloth on a coating table, uniformly coating wear-resistant coating on the primary backing cloth by adopting a coating knife coating method, then putting the primary backing cloth into a curing tank for curing at the temperature of 40-60 ℃, washing the cured cloth in a washing tank, and finally drying, shaping, rolling, grinding and shearing to obtain the damping cloth with good wear resistance.
Description
Technical Field
The invention belongs to the technical field of damping cloth preparation, and particularly relates to damping cloth with good wear resistance and a preparation method thereof.
Background
The damping cloth is a polyurethane frosted cloth which is processed by a special process from a base material, an abrasive and a binder, examples of damping cloth products include a non-woven abrasive manual grinding pad, other examples of abrasive products include a coiling type and an integral type grinding wheel, polishing cloth usually comprises nylon fibers distributed in the whole non-woven cloth and bonded together, and the abrasive is bonded in a polishing cloth fiber net, which not only has better physicochemical properties but also is suitable for high precision polishing, such as polishing of jewels, however, few reports have been made in the prior art to improve the wear resistance of the damping cloth by performing process modification, the surface of the damping cloth is easy to breed bacteria and mildew, the service life is short, the surface of the damping cloth is not flat and smooth enough, the quality is poor, the waterproof and antifouling performance is poor, therefore, the technical problem to be solved at present is to provide the damping cloth with good wear resistance and antibacterial and bacteriostatic properties.
Disclosure of Invention
The invention aims to provide damping cloth with good wear resistance and a preparation method thereof.
The technical problems to be solved by the invention are as follows:
in the prior art, the surface of the damping cloth is not flat and smooth enough, the quality is poor, and the waterproof and antifouling performances are poor.
The purpose of the invention can be realized by the following technical scheme:
a damping cloth with good wear resistance comprises a primary backing cloth and a wear-resistant coating;
the damping cloth with good wear resistance is prepared by the following steps:
firstly, unwinding a primary backing, and immersing the primary backing into a water immersion tank through a cloth storage rack, wherein the water immersion tank contains the following components in a mass ratio of 1: 100 anionic surfactant and water, then squeezing the water in the base cloth by a squeezing roll, and ironing the base cloth to be semi-dry by an ironing wheel;
and secondly, placing the semi-dry primary backing cloth on a coating table, uniformly coating the wear-resistant coating on the primary backing cloth by adopting a coating knife coating method, then curing the primary backing cloth in a curing tank at the temperature of 40-60 ℃, washing the cured cloth in a washing tank, and finally drying, shaping, rolling, grinding and shearing to obtain the damping cloth with good wear resistance.
Further, the anionic surfactant is sodium dodecyl benzene sulfonate.
Further, the preparation process of the wear-resistant coating is as follows:
mixing diphenylmethane diisocyanate and N, N-dimethylformamide according to the mass ratio of 1: 1, adding into a reaction kettle, and dropwise adding perfluorooctyl ethyl alcohol and N, N-dimethylformamide into the reaction kettle under the protection of nitrogen according to the weight ratio of 1 g: and (2) controlling the dropping speed of 20-30mL of mixed liquid to be 4 drops/second, after the dropping is finished, controlling the reaction temperature to be 50 ℃, stirring and reacting for 2.5 hours under the condition of the rotating speed of 70r/min, then heating to 60 ℃, adding polytetrahydrofuran into the reaction kettle, stirring and reacting for 1 hour, adding grinding particles and an antibacterial agent, continuing stirring for 2 hours, adding triethylene glycol, heating to 80 ℃, reacting for 3 hours, and obtaining the wear-resistant coating.
Further, the mass ratio of the diphenylmethane diisocyanate, the perfluorooctyl ethyl alcohol, the polytetrahydrofuran, the grinding particles and the antibacterial agent is 5: 5: 3-8: 0.3: 0.3.
further, the abrasive particles are made by the steps of:
step A1, mixing silica sol with the mass fraction of 30% and deionized water according to the volume ratio of 3: 20, adding the mixture into a three-neck flask, magnetically stirring the mixture for 10min at the rotation speed of 1000-2000r/min to obtain a mixed solution a, and mixing aluminum nitrate, hexamethylenetetramine and deionized water according to the dosage ratio of 0.1 mol: 0.5 mol: 300mL of the mixed solution is added into a beaker, the mixed solution b is obtained after ultrasonic dispersion is carried out for 10min at the frequency of 20-40kHz, the mixed solution b is dripped into the mixed solution a by a constant-pressure dropping funnel, reflux reaction is carried out for 2-3h at the rotating speed of 100-;
step A2, adding the hybrid particles and absolute ethyl alcohol into a round-bottom flask, performing ultrasonic dispersion for 1h at the frequency of 30-50kHz, adding deionized water and Tris hydrochloride into the round-bottom flask after the ultrasonic treatment is finished, stirring at the room temperature and the rotation speed of 100-200r/min for 10min, adding dopamine hydrochloride, increasing the rotation speed to 300r/min, performing stirring reaction for 4h, performing vacuum filtration after the reaction is finished, washing a filter cake for 3-5 times by using distilled water, and finally drying at the temperature of 70 ℃ for 24h under the vacuum condition to obtain the aminated hybrid particles;
and A3, adding the amino hybrid particles and dimethyl sulfoxide into a reaction kettle, stirring for 20min at the rotation speed of 100-200r/min, adding trifluoroacetic acid, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N, N' -dicyclohexylcarbodiimide into the reaction kettle, stirring for reaction for 1-2h at the room temperature with the rotation speed unchanged, filtering, washing a filter cake with an ethanol solution with the mass fraction of 30% until a washing solution is neutral, and finally drying in a drying box at the temperature of 70 ℃ until the weight is constant to obtain the ground particles.
Further, the volume ratio of the mixed solution a to the mixed solution b in the step a1 is 1: 1; in the step A2, the dosage ratio of the hybrid particles, the absolute ethyl alcohol, the deionized water, the Tris hydrochloride and the dopamine hydrochloride is 10 g: 300-500 mL: 500 mL: 4 g: 1g of a compound; in step A3, the dosage ratio of amino hybrid particles, dimethyl sulfoxide, trifluoroacetic acid, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N, N' -dicyclohexylcarbodiimide is 3-5 g: 100-150 mL: 2 g: 0.5 g: 0.5 g.
The gamma-Al with complete core-shell structure is prepared by taking colloidal silicon dioxide as a silicon source and adopting a homogeneous phase method process2O3/SiO2The preparation method comprises the following steps of coating the nano hybrid particles with dopamine to obtain aminated hybrid particles with amino active functional groups, and finally carrying out amidation reaction on the aminated hybrid particles and trifluoroacetic acid under the action of a condensing agent to obtain grinding particles, wherein gamma-Al2O3The polishing agent has the characteristics of small crystal grains, high compactness, friction resistance, wear resistance, high chemical stability and good biological inertia, but the edges and corners of the polishing agent are sharp and irregular2O3Compared with a solid abrasive particle structure with single hardness, the solid abrasive particle structure has the structural characteristics of hard inside and soft outside, further improves the grinding and polishing characteristics of the abrasive particle, and contains F-C groups on the surface of the abrasive particle through an amide reaction, so that the abrasive particle is increased on the one hand on the polymer matrixAnd on the other hand, due to the fact that F-C has high bond energy, when the material is impacted, the F-C with the high bond energy can prevent cracks from being transmitted, and the fluorine-containing group can improve the hydrophobicity of the material, enhance the waterproof performance of the material and reduce the deposition of dirt and the breeding of bacteria.
Further, the antibacterial agent is prepared by the following steps:
step S11, adding absolute ethyl alcohol into a round-bottom flask, placing the round-bottom flask into a 30 ℃ constant-temperature water bath kettle, adding glacial acetic acid and tetrabutyl titanate into the round-bottom flask, stirring the mixture for 20min under the condition that the rotation speed is 100 plus 200r/min, dropwise adding an ethanol solution with the volume fraction of 50% into the round-bottom flask by using a constant-pressure dropping funnel, controlling the dropwise adding speed to be 1-3 drops/second, continuously stirring the mixture for 30min after the dropwise adding is finished and the rotation speed is unchanged, standing the mixture for 12min to obtain gel, washing the gel for three times by using the deionized water and the absolute ethyl alcohol respectively, drying the gel for 2h at 120 ℃, transferring the gel into a crucible, calcining the gel for 4h at 650 ℃, naturally cooling the gel, and taking the gel out to obtain an intermediate;
step S12, adding nitric acid ketone trihydrate and absolute ethyl alcohol into a three-mouth flask, stirring for 2 hours at the rotation speed of 60-100r/min, placing the three-mouth flask into a constant-temperature water bath kettle at 60 ℃, continuously stirring, then adding an intermediate 1 into the three-mouth flask, reacting for 30 minutes at the rotation speed of 200-300r/min, adding a sodium hydroxide solution with the mass fraction of 30% and a glucose solution with the mass fraction of 20% into the three-mouth flask, stirring for 30 minutes at a constant rotation speed to obtain a suspension, centrifuging the suspension for 5-10 minutes at the rotation speed of 5000r/min, washing precipitates with deionized water and absolute ethyl alcohol for three times respectively, and drying for 12 hours in a vacuum drying box at 60 ℃ to obtain an intermediate 2;
step S13, adding epoxy chloropropane, 2-dimethylamino chloroethane hydrochloride and absolute ethyl alcohol into a dry three-neck flask, heating and refluxing for 24h at 80 ℃ under the protection of nitrogen, after the reaction is finished, performing rotary evaporation to 1/5 volume by using a rotary evaporator, recrystallizing in acetone, and finally adjusting the pH value to 8 by using a sodium hydroxide solution with the mass fraction of 15% to obtain a modifier;
and step S14, adding the intermediate 2, oleic acid and 40 mass percent ethanol solution into a reaction kettle, stirring for 30min at the rotation speed of 100-200r/min, adding the modifier into the reaction kettle, mixing and stirring for 24h under the protection of nitrogen, filtering, washing for 3-5 times by using acetone, and finally drying in an oven at 80 ℃ to constant weight to obtain the antibacterial agent.
Further, the volume ratio of the absolute ethyl alcohol, the glacial acetic acid and the tetrabutyl titanate in the step S11 is 5: 1: 2, the dosage of the ethanol solution with 50 percent of volume fraction is the same as that of tetrabutyl titanate; in the step S12, the dosage ratio of the nitric acid ketone trihydrate, the absolute ethyl alcohol, the intermediate 1, the sodium hydroxide solution and the glucose solution is 0.5 g: 100mL of: 0.5 g: 3 g: 10 mL; in step S13, the ratio of the amounts of epichlorohydrin, 2-dimethylaminoethyl chloride hydrochloride and absolute ethanol is 12 mmol: 4 mmol: 20-40 mL; in the step S14, the dosage ratio of the intermediate 2, the oleic acid, the ethanol solution with the mass fraction of 40% and the modifier is 1-3 g: 1 g: 50-80 mL: 1g of the total weight of the composition.
The preparation method comprises the steps of preparing nano titanium dioxide particles, namely an intermediate 1, depositing cuprous oxide particles on the surface of the intermediate 1 by a thermal deposition method to obtain an intermediate 2, coating the intermediate 2 with oleic acid to graft an active functional group-COOH on the surface of the intermediate 2, performing nucleophilic substitution reaction between the intermediate 2 and epoxy chloropropane by using 2-dimethylamino chloroethane hydrochloride as a precursor to obtain a quaternary ammonium salt modifier, and performing ring-opening reaction between the-COOH on the intermediate 2 and an epoxy group on the modifier to obtain an antibacterial agent containing hydroxyl and ester groups, wherein doping of cuprous oxide can improve the photocatalytic activity of the nano titanium dioxide, so that the antibacterial and self-cleaning properties of the nano titanium dioxide are improved, and the cuprous oxide, the titanium dioxide and the quaternary ammonium salt modifier synergistically play an antibacterial role.
Further, the preparation method of the damping cloth with good wear resistance comprises the following steps:
firstly, unwinding a primary backing, and immersing the primary backing into a water immersion tank through a cloth storage rack, wherein the water immersion tank contains the following components in a mass ratio of 1: 100 anionic surfactant and water, then squeezing the water in the base cloth by a squeezing roll, and ironing the base cloth to be semi-dry by an ironing wheel;
and secondly, placing the semi-dry primary backing cloth on a coating table, uniformly coating the wear-resistant coating on the primary backing cloth by adopting a coating knife coating method, then curing the primary backing cloth in a curing tank at the temperature of 40-60 ℃, washing the cured cloth in a washing tank, and finally drying, shaping, rolling, grinding and shearing to obtain the damping cloth with good wear resistance.
The invention has the beneficial effects that:
the invention takes the base cloth and the wear-resistant coating as raw materials, firstly, the base part is pretreated, then the wear-resistant coating is coated on the base part, the colloidal silicon dioxide is taken as a silicon source, and the homogeneous phase method process is adopted to prepare the gamma-Al with complete core-shell structure2O3/SiO2The preparation method comprises the following steps of coating the nano hybrid particles with dopamine to obtain aminated hybrid particles with amino active functional groups, and finally carrying out amidation reaction on the aminated hybrid particles and trifluoroacetic acid under the action of a condensing agent to obtain grinding particles, wherein gamma-Al2O3The polishing agent has the characteristics of small crystal grains, high compactness, friction resistance, wear resistance, high chemical stability and good biological inertia, but the edges and corners of the polishing agent are sharp and irregular2O3Compared with a solid abrasive particle structure with single hardness, the solid abrasive particle structure has the structural characteristics of hardness inside and outside, further improves the grinding and polishing characteristics of the abrasive particle, contains F-C groups grafted on the surface of the abrasive particle through an amide reaction, increases the compatibility of the abrasive particle in a polymer matrix on one hand, and prevents cracks from transmitting due to the fact that F-C has higher bond energy when the material is impacted, and improves the hydrophobicity of the material, enhances the waterproof performance of the material, and reduces the deposition of dirt and the breeding of bacteria; preparing nano titanium dioxide particles, namely an intermediate 1, by taking tetrabutyl titanate as a titanium source, further depositing cuprous oxide particles on the surface of the intermediate 1 by a thermal deposition method to obtain an intermediate 2, coating the intermediate 2 by oleic acid to graft an active functional group-COOH on the surface of the intermediate 2, and taking 2-dimethylamino chloroethane hydrochloride as the formerThe precursor is subjected to nucleophilic substitution reaction with epoxy chloropropane to obtain a quaternary ammonium salt modifier, and finally-COOH on the intermediate 2 and an epoxy group on the modifier are subjected to ring-opening reaction to obtain an antibacterial agent containing hydroxyl and ester groups, wherein the photocatalytic activity of the nano titanium dioxide can be improved by doping cuprous oxide, so that the antibacterial and self-cleaning properties of the nano titanium dioxide are improved, and the cuprous oxide, the titanium dioxide and the quaternary ammonium salt modifier synergistically play an antibacterial role; therefore, the damping cloth prepared by the invention has high wear resistance, and also has antibacterial and waterproof properties.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A damping cloth with good wear resistance comprises a primary backing cloth and a wear-resistant coating;
the damping cloth with good wear resistance is prepared by the following steps:
firstly, unwinding a primary backing, and immersing the primary backing into a water immersion tank through a cloth storage rack, wherein the water immersion tank contains the following components in a mass ratio of 1: 100 anionic surfactant and water, then squeezing the water in the base cloth by a squeezing roll, and ironing the base cloth to be semi-dry by an ironing wheel;
and secondly, placing the semi-dry primary backing cloth on a coating table, uniformly coating the wear-resistant coating on the primary backing cloth by adopting a coating knife coating method, then curing the primary backing cloth in a curing tank at the temperature of 40 ℃, washing the cured cloth in a washing tank, and finally drying, shaping, rolling, grinding and shearing to obtain the damping cloth with good wear resistance.
The anionic surfactant is sodium dodecyl benzene sulfonate.
The preparation process of the wear-resistant coating comprises the following steps:
mixing diphenylmethane diisocyanate and N, N-dimethylformamide according to the mass ratio of 1: 1, adding into a reaction kettle, and dropwise adding perfluorooctyl ethyl alcohol and N, N-dimethylformamide into the reaction kettle under the protection of nitrogen according to the weight ratio of 1 g: and (2) controlling the dropping speed of 20mL of mixed liquid to be 4 drops/second, after the dropping is finished, controlling the reaction temperature to be 50 ℃, stirring and reacting for 2.5 hours under the condition of the rotating speed of 70r/min, then heating to 60 ℃, adding polytetrahydrofuran into the reaction kettle, stirring and reacting for 1 hour, adding the grinding particles and the antibacterial agent, continuing stirring for 2 hours, adding triethylene glycol, heating to 80 ℃, reacting for 3 hours, and obtaining the wear-resistant coating.
The mass ratio of the diphenylmethane diisocyanate to the perfluorooctyl ethyl alcohol to the polytetrahydrofuran to the grinding particles to the antibacterial agent is 5: 5: 3: 0.3: 0.3.
the abrasive particles are made by the steps of:
step A1, mixing silica sol with the mass fraction of 30% and deionized water according to the volume ratio of 3: 20, adding the mixture into a three-neck flask, magnetically stirring the mixture for 10min at the rotating speed of 1000r/min to obtain a mixed solution a, and mixing aluminum nitrate, hexamethylenetetramine and deionized water according to the dosage ratio of 0.1 mol: 0.5 mol: 300mL of the mixed solution is added into a beaker, the mixed solution is subjected to ultrasonic dispersion for 10min at the frequency of 20kHz to obtain a mixed solution b, the mixed solution b is dripped into the mixed solution a by a constant-pressure dropping funnel, the reflux reaction is carried out for 2h under the condition of oil bath at the temperature of 85 ℃, the rotating speed is 100r/min, then the magnetic stirring is carried out for 5min at the rotating speed of 5000r/min, the mixed solution is cooled to room temperature, after aging is carried out for 4h, the centrifugal treatment is carried out for 10min under the condition of the rotating speed of 5000r/min, the precipitate is washed for 3 times by distilled water, finally, after drying is carried out in a vacuum drying oven at the temperature of 80 ℃ for 10h, ball milling beads with the diameter of 0.1mm are carried out for 20 min;
step A2, adding the hybrid particles and absolute ethyl alcohol into a round-bottom flask, performing ultrasonic dispersion for 1h at the frequency of 30kHz, adding deionized water and Tris hydrochloride into the round-bottom flask after the ultrasonic treatment is finished, stirring at the room temperature and the rotating speed of 100r/min for 10min, adding dopamine hydrochloride, increasing the rotating speed to 300r/min, stirring for reaction for 4h, performing vacuum filtration after the reaction is finished, washing a filter cake for 3 times by using distilled water, and finally drying at the temperature of 70 ℃ for 24h under the vacuum condition to obtain the aminated hybrid particles;
and A3, adding the amino hybrid particles and dimethyl sulfoxide into a reaction kettle, stirring for 20min at the rotation speed of 100r/min, adding trifluoroacetic acid, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N, N' -dicyclohexylcarbodiimide into the reaction kettle, stirring for reacting for 1h at the rotation speed of room temperature, filtering, washing a filter cake with an ethanol solution with the mass fraction of 30% until a washing solution is neutral, and finally drying in a drying box at 70 ℃ to constant weight to obtain the ground particles.
The volume ratio of the mixed solution a to the mixed solution b in the step A1 is 1: 1; in the step A2, the dosage ratio of the hybrid particles, the absolute ethyl alcohol, the deionized water, the Tris hydrochloride and the dopamine hydrochloride is 10 g: 300 mL: 500 mL: 4 g: 1g of a compound; in step A3, the amount ratio of amino hybrid particles, dimethyl sulfoxide, trifluoroacetic acid, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N, N' -dicyclohexylcarbodiimide was 3 g: 100mL of: 2 g: 0.5 g: 0.5 g.
The antibacterial agent is prepared by the following steps:
step S11, adding absolute ethyl alcohol into a round-bottom flask, placing the round-bottom flask into a 30 ℃ constant-temperature water bath kettle, adding glacial acetic acid and tetrabutyl titanate into the round-bottom flask, stirring the round-bottom flask at a rotation speed of 100r/min for 20min to obtain a mixed solution c, dropwise adding an ethanol solution with a volume fraction of 50% into the round-bottom flask by using a constant-pressure dropping funnel, controlling the dropwise adding speed to be 1 drop/second, continuing stirring the round-bottom flask for 30min after the dropwise adding is finished and the rotation speed is unchanged, standing the mixed solution for 12min to obtain gel, washing the gel three times by using deionized water and absolute ethyl alcohol respectively, drying the gel at 120 ℃ for 2h, transferring the gel into a crucible, calcining the gel at 650 ℃ for 4h, naturally cooling the gel;
step S12, adding nitric acid ketone trihydrate and absolute ethyl alcohol into a three-mouth flask, stirring for 2 hours at a rotation speed of 60r/min, placing the three-mouth flask into a constant-temperature water bath kettle at 60 ℃, continuously stirring, then adding the intermediate 1 into the three-mouth flask, reacting for 30 minutes at a rotation speed of 200r/min, adding a sodium hydroxide solution with a mass fraction of 30% and a glucose solution with a mass fraction of 20% into the three-mouth flask, stirring for 30 minutes at a constant rotation speed to obtain a suspension, centrifuging the suspension for 5 minutes at a rotation speed of 5000r/min, washing precipitates with deionized water and absolute ethyl alcohol for three times respectively, and drying for 12 hours in a vacuum drying box at 60 ℃ to obtain an intermediate 2;
step S13, adding epoxy chloropropane, 2-dimethylamino chloroethane hydrochloride and absolute ethyl alcohol into a dry three-neck flask, heating and refluxing for 24h at 80 ℃ under the protection of nitrogen, after the reaction is finished, performing rotary evaporation to 1/5 volume by using a rotary evaporator, recrystallizing in acetone, and finally adjusting the pH value to 8 by using a sodium hydroxide solution with the mass fraction of 15% to obtain a modifier;
and step S14, adding the intermediate 2, oleic acid and 40 mass percent ethanol solution into a reaction kettle, stirring for 30min at the rotating speed of 100r/min, adding the modifier into the reaction kettle, mixing and stirring for 24h under the protection of nitrogen, filtering, washing for 3 times by using acetone, and finally drying in an oven at the temperature of 80 ℃ to constant weight to obtain the antibacterial agent.
In step S11, the volume ratio of the absolute ethyl alcohol to the glacial acetic acid to the tetrabutyl titanate is 5: 1: 2, the dosage of the ethanol solution with 50 percent of volume fraction is the same as that of tetrabutyl titanate; in the step S12, the dosage ratio of the nitric acid ketone trihydrate, the absolute ethyl alcohol, the intermediate 1, the sodium hydroxide solution and the glucose solution is 0.5 g: 100mL of: 0.5 g: 3 g: 10 mL; in step S13, the ratio of the amounts of epichlorohydrin, 2-dimethylaminoethyl chloride hydrochloride and absolute ethanol is 12 mmol: 4 mmol: 20 mL; in the step S14, the dosage ratio of the intermediate 2, the oleic acid, the ethanol solution with the mass fraction of 40% and the modifier is 1 g: 1 g: 50mL of: 1g of the total weight of the composition.
Example 2
A damping cloth with good wear resistance comprises a primary backing cloth and a wear-resistant coating;
the damping cloth with good wear resistance is prepared by the following steps:
firstly, unwinding a primary backing, and immersing the primary backing into a water immersion tank through a cloth storage rack, wherein the water immersion tank contains the following components in a mass ratio of 1: 100 anionic surfactant and water, then squeezing the water in the base cloth by a squeezing roll, and ironing the base cloth to be semi-dry by an ironing wheel;
and secondly, placing the semi-dry primary backing cloth on a coating table, uniformly coating the wear-resistant coating on the primary backing cloth by adopting a coating knife coating method, then putting the primary backing cloth into a curing tank for curing at the temperature of 50 ℃, washing the cured cloth in a washing tank, and finally drying, shaping, rolling, grinding and shearing to obtain the damping cloth with good wear resistance.
The anionic surfactant is sodium dodecyl benzene sulfonate.
The preparation process of the wear-resistant coating comprises the following steps:
mixing diphenylmethane diisocyanate and N, N-dimethylformamide according to the mass ratio of 1: 1, adding into a reaction kettle, and dropwise adding perfluorooctyl ethyl alcohol and N, N-dimethylformamide into the reaction kettle under the protection of nitrogen according to the weight ratio of 1 g: and (2) controlling the dropping speed to be 4 drops/second for 25mL of mixed solution, controlling the reaction temperature to be 50 ℃ after dropping, stirring and reacting for 2.5 hours under the condition of the rotating speed of 70r/min, then heating to 60 ℃, adding polytetrahydrofuran into the reaction kettle, stirring and reacting for 1 hour, adding grinding particles and an antibacterial agent, continuing stirring for 2 hours, adding triethylene glycol, heating to 80 ℃, reacting for 3 hours, and obtaining the wear-resistant coating.
The mass ratio of the diphenylmethane diisocyanate to the perfluorooctyl ethyl alcohol to the polytetrahydrofuran to the grinding particles to the antibacterial agent is 5: 5: 5: 0.3: 0.3.
the abrasive particles are made by the steps of:
step A1, mixing silica sol with the mass fraction of 30% and deionized water according to the volume ratio of 3: 20, adding the mixture into a three-neck flask, magnetically stirring the mixture for 10min at the rotating speed of 1500r/min to obtain a mixed solution a, and mixing aluminum nitrate, hexamethylenetetramine and deionized water according to the dosage ratio of 0.1 mol: 0.5 mol: 300mL of the mixed solution is added into a beaker, the mixed solution is subjected to ultrasonic dispersion for 10min at the frequency of 30kHz to obtain a mixed solution b, the mixed solution b is dripped into the mixed solution a by a constant-pressure dropping funnel, the reflux reaction is carried out for 2h under the condition of oil bath at the temperature of 85 ℃, the rotating speed is 150r/min, then the magnetic stirring is carried out for 8min at the rotating speed of 5000r/min, the mixed solution is cooled to room temperature, after aging is carried out for 4h, the centrifugal treatment is carried out for 10min under the condition of 6000r/min, the precipitate is washed for 4 times by distilled water, finally, after drying is carried out in a vacuum drying box for 10h at the temperature of 80 ℃, ball milling beads with the diameter of 0.1mm are carried out for 20min under the condition of ball;
step A2, adding the hybrid particles and absolute ethyl alcohol into a round-bottom flask, performing ultrasonic dispersion for 1h at the frequency of 40kHz, adding deionized water and Tris hydrochloride into the round-bottom flask after the ultrasonic treatment is finished, stirring at the room temperature and the rotating speed of 150r/min for 10min, adding dopamine hydrochloride, increasing the rotating speed to 300r/min, stirring for reaction for 4h, performing vacuum filtration after the reaction is finished, washing a filter cake for 4 times by using distilled water, and finally drying at the temperature of 70 ℃ for 24h under the vacuum condition to obtain the aminated hybrid particles;
and A3, adding the amino hybrid particles and dimethyl sulfoxide into a reaction kettle, stirring for 20min at the rotation speed of 150r/min, adding trifluoroacetic acid, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N, N' -dicyclohexylcarbodiimide into the reaction kettle, stirring for reacting for 1h at the constant rotation speed at room temperature, filtering, washing a filter cake with an ethanol solution with the mass fraction of 30% until a washing solution is neutral, and finally drying in a drying box at 70 ℃ to constant weight to obtain the ground particles.
The volume ratio of the mixed solution a to the mixed solution b in the step A1 is 1: 1; in the step A2, the dosage ratio of the hybrid particles, the absolute ethyl alcohol, the deionized water, the Tris hydrochloride and the dopamine hydrochloride is 10 g: 400 mL: 500 mL: 4 g: 1g of a compound; in step A3, the amount ratio of amino hybrid particles, dimethyl sulfoxide, trifluoroacetic acid, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N, N' -dicyclohexylcarbodiimide was 4 g: 120mL of: 2 g: 0.5 g: 0.5 g.
The antibacterial agent is prepared by the following steps:
step S11, adding absolute ethyl alcohol into a round-bottom flask, placing the round-bottom flask into a 30-DEG C constant-temperature water bath kettle, adding glacial acetic acid and tetrabutyl titanate into the round-bottom flask, stirring the mixture for 20min at a rotation speed of 150r/min to obtain a mixed solution c, dropwise adding an ethanol solution with a volume fraction of 50% into the round-bottom flask by using a constant-pressure dropping funnel, controlling the dropwise adding speed to be 2 drops/second, continuing stirring the mixture for 30min after the dropwise adding is finished and the rotation speed is unchanged, standing the mixture for 12min to obtain gel, washing the gel three times by using deionized water and absolute ethyl alcohol respectively, drying the gel for 2h at 120 ℃, transferring the gel into a crucible, calcining the gel for 4h at 650 ℃, naturally cooling the gel, and taking the gel out to;
step S12, adding nitric acid ketone trihydrate and absolute ethyl alcohol into a three-mouth flask, stirring for 2 hours at a rotating speed of 80r/min, placing the three-mouth flask into a constant-temperature water bath kettle at 60 ℃, continuously stirring, then adding the intermediate 1 into the three-mouth flask, reacting for 30 minutes at a rotating speed of 250r/min, adding a sodium hydroxide solution with a mass fraction of 30% and a glucose solution with a mass fraction of 20% into the three-mouth flask, stirring for 30 minutes at a constant rotating speed to obtain a suspension, centrifuging the suspension for 8 minutes at a rotating speed of 5000r/min, washing precipitates with deionized water and absolute ethyl alcohol for three times respectively, and drying for 12 hours in a vacuum drying box at 60 ℃ to obtain an intermediate 2;
step S13, adding epoxy chloropropane, 2-dimethylamino chloroethane hydrochloride and absolute ethyl alcohol into a dry three-neck flask, heating and refluxing for 24h at 80 ℃ under the protection of nitrogen, after the reaction is finished, performing rotary evaporation to 1/5 volume by using a rotary evaporator, recrystallizing in acetone, and finally adjusting the pH value to 8 by using a sodium hydroxide solution with the mass fraction of 15% to obtain a modifier;
and step S14, adding the intermediate 2, oleic acid and 40 mass percent ethanol solution into a reaction kettle, stirring for 30min at the rotating speed of 150r/min, adding the modifier into the reaction kettle, mixing and stirring for 24h under the protection of nitrogen, filtering, washing for 4 times by using acetone, and finally drying in an oven at the temperature of 80 ℃ to constant weight to obtain the antibacterial agent.
In step S11, the volume ratio of the absolute ethyl alcohol to the glacial acetic acid to the tetrabutyl titanate is 5: 1: 2, the dosage of the ethanol solution with 50 percent of volume fraction is the same as that of tetrabutyl titanate; in the step S12, the dosage ratio of the nitric acid ketone trihydrate, the absolute ethyl alcohol, the intermediate 1, the sodium hydroxide solution and the glucose solution is 0.5 g: 100mL of: 0.5 g: 3 g: 10 mL; in step S13, the ratio of the amounts of epichlorohydrin, 2-dimethylaminoethyl chloride hydrochloride and absolute ethanol is 12 mmol: 4 mmol: 30 mL; in the step S14, the dosage ratio of the intermediate 2, the oleic acid, the ethanol solution with the mass fraction of 40% and the modifier is 2 g: 1 g: 70mL of: 1g of the total weight of the composition.
Example 3
A damping cloth with good wear resistance comprises a primary backing cloth and a wear-resistant coating;
the damping cloth with good wear resistance is prepared by the following steps:
firstly, unwinding a primary backing, and immersing the primary backing into a water immersion tank through a cloth storage rack, wherein the water immersion tank contains the following components in a mass ratio of 1: 100 anionic surfactant and water, then squeezing the water in the base cloth by a squeezing roll, and ironing the base cloth to be semi-dry by an ironing wheel;
and secondly, placing the semi-dry primary backing cloth on a coating table, uniformly coating the wear-resistant coating on the primary backing cloth by adopting a coating knife coating method, then putting the primary backing cloth into a curing tank for curing at the temperature of 60 ℃, washing the cured cloth in a washing tank, and finally drying, shaping, rolling, grinding and shearing to obtain the damping cloth with good wear resistance.
The anionic surfactant is sodium dodecyl benzene sulfonate.
The preparation process of the wear-resistant coating comprises the following steps:
mixing diphenylmethane diisocyanate and N, N-dimethylformamide according to the mass ratio of 1: 1, adding into a reaction kettle, and dropwise adding perfluorooctyl ethyl alcohol and N, N-dimethylformamide into the reaction kettle under the protection of nitrogen according to the weight ratio of 1 g: and (3) controlling the dropping speed to be 4 drops/second for 30mL of mixed solution, controlling the reaction temperature to be 50 ℃ after dropping, stirring and reacting for 2.5 hours under the condition of the rotating speed of 70r/min, then heating to 60 ℃, adding polytetrahydrofuran into the reaction kettle, stirring and reacting for 1 hour, adding grinding particles and an antibacterial agent, continuing stirring for 2 hours, adding triethylene glycol, heating to 80 ℃, reacting for 3 hours, and obtaining the wear-resistant coating.
The mass ratio of the diphenylmethane diisocyanate to the perfluorooctyl ethyl alcohol to the polytetrahydrofuran to the grinding particles to the antibacterial agent is 5: 5: 8: 0.3: 0.3.
the abrasive particles are made by the steps of:
step A1, mixing silica sol with the mass fraction of 30% and deionized water according to the volume ratio of 3: 20, adding the mixture into a three-neck flask, magnetically stirring the mixture for 10min at the rotating speed of 2000r/min to obtain a mixed solution a, and mixing aluminum nitrate, hexamethylenetetramine and deionized water according to the dosage ratio of 0.1 mol: 0.5 mol: 300mL of the mixed solution is added into a beaker, the mixed solution is subjected to ultrasonic dispersion for 10min at the frequency of 40kHz to obtain a mixed solution b, the mixed solution b is dripped into the mixed solution a by a constant-pressure dropping funnel, the mixed solution is subjected to reflux reaction for 3h at the rotation speed of 200r/min under the condition of an oil bath at the temperature of 85 ℃, then is subjected to magnetic stirring for 10min at the rotation speed of 5000r/min, is cooled to room temperature, is aged for 4h, is subjected to centrifugal treatment for 10min at the rotation speed of 8000r/min, is deposited and washed for 5 times by distilled water, is dried for 10h at the temperature of 80 ℃ in a vacuum drying oven, is subjected to ball milling for 20min at the rotation speed of 400r/min, is transferred into a crucible, and is roasted for 2.;
step A2, adding the hybrid particles and absolute ethyl alcohol into a round-bottom flask, performing ultrasonic dispersion for 1h at the frequency of 50kHz, adding deionized water and Tris hydrochloride into the round-bottom flask after the ultrasonic treatment is finished, stirring at the room temperature and the rotating speed of 200r/min for 10min, adding dopamine hydrochloride, increasing the rotating speed to 300r/min, stirring for reaction for 4h, performing vacuum filtration after the reaction is finished, washing a filter cake for 5 times by using distilled water, and finally drying at the temperature of 70 ℃ for 24h under the vacuum condition to obtain the aminated hybrid particles;
and A3, adding the amino hybrid particles and dimethyl sulfoxide into a reaction kettle, stirring for 20min at the rotation speed of 200r/min, adding trifluoroacetic acid, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N, N' -dicyclohexylcarbodiimide into the reaction kettle, stirring for reacting for 2h at the constant rotation speed at room temperature, filtering, washing a filter cake with an ethanol solution with the mass fraction of 30% until a washing solution is neutral, and finally drying in a drying box at 70 ℃ to constant weight to obtain the ground particles.
The volume ratio of the mixed solution a to the mixed solution b in the step A1 is 1: 1; in the step A2, the dosage ratio of the hybrid particles, the absolute ethyl alcohol, the deionized water, the Tris hydrochloride and the dopamine hydrochloride is 10 g: 500 mL: 500 mL: 4 g: 1g of a compound; in step A3, the amount ratio of amino hybrid particles, dimethyl sulfoxide, trifluoroacetic acid, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N, N' -dicyclohexylcarbodiimide was 5 g: 150mL of: 2 g: 0.5 g: 0.5 g.
The antibacterial agent is prepared by the following steps:
step S11, adding absolute ethyl alcohol into a round-bottom flask, placing the round-bottom flask into a 30 ℃ constant-temperature water bath kettle, adding glacial acetic acid and tetrabutyl titanate into the round-bottom flask, stirring the mixture for 20min at a rotation speed of 200r/min to obtain a mixed solution c, dropwise adding an ethanol solution with a volume fraction of 50% into the round-bottom flask by using a constant-pressure dropping funnel, controlling the dropwise adding speed to be 3 drops/second, continuing stirring the mixture for 30min after the dropwise adding is finished and the rotation speed is unchanged, standing the mixture for 12min to obtain gel, washing the gel three times by using deionized water and absolute ethyl alcohol respectively, drying the gel for 2h at 120 ℃, transferring the gel into a crucible, calcining the gel for 4h at 650 ℃, naturally cooling the gel, and taking the gel out to obtain an;
step S12, adding nitric acid ketone trihydrate and absolute ethyl alcohol into a three-mouth flask, stirring for 2 hours at the rotation speed of 100r/min, placing the three-mouth flask into a constant-temperature water bath kettle at 60 ℃, continuously stirring, then adding the intermediate 1 into the three-mouth flask, reacting for 30 minutes at the rotation speed of 300r/min, adding a sodium hydroxide solution with the mass fraction of 30% and a glucose solution with the mass fraction of 20% into the three-mouth flask, stirring for 30 minutes at a constant rotation speed to obtain a suspension, centrifuging the suspension for 10 minutes at the rotation speed of 5000r/min, washing precipitates with deionized water and absolute ethyl alcohol for three times respectively, and drying for 12 hours in a vacuum drying box at 60 ℃ to obtain an intermediate 2;
step S13, adding epoxy chloropropane, 2-dimethylamino chloroethane hydrochloride and absolute ethyl alcohol into a dry three-neck flask, heating and refluxing for 24h at 80 ℃ under the protection of nitrogen, after the reaction is finished, performing rotary evaporation to 1/5 volume by using a rotary evaporator, recrystallizing in acetone, and finally adjusting the pH value to 8 by using a sodium hydroxide solution with the mass fraction of 15% to obtain a modifier;
and step S14, adding the intermediate 2, oleic acid and 40 mass percent ethanol solution into a reaction kettle, stirring for 30min at the rotation speed of 200r/min, adding the modifier into the reaction kettle, mixing and stirring for 24h under the protection of nitrogen, filtering, washing for 5 times by using acetone, and finally drying in an oven at 80 ℃ to constant weight to obtain the antibacterial agent.
In step S11, the volume ratio of the absolute ethyl alcohol to the glacial acetic acid to the tetrabutyl titanate is 5: 1: 2, the dosage of the ethanol solution with 50 percent of volume fraction is the same as that of tetrabutyl titanate; in the step S12, the dosage ratio of the nitric acid ketone trihydrate, the absolute ethyl alcohol, the intermediate 1, the sodium hydroxide solution and the glucose solution is 0.5 g: 100mL of: 0.5 g: 3 g: 10 mL; in step S13, the ratio of the amounts of epichlorohydrin, 2-dimethylaminoethyl chloride hydrochloride and absolute ethanol is 12 mmol: 4 mmol: 40 mL; in the step S14, the dosage ratio of the intermediate 2, the oleic acid, the ethanol solution with the mass fraction of 40% and the modifier is 3 g: 1 g: 80mL of: 1g of the total weight of the composition.
Comparative example
The comparative example is a common damping cloth in the market.
The damping cloths of examples 1 to 3 and comparative example were subjected to performance tests, the results of which are shown in the following table:
as can be seen from the above table, the damping stress at definite elongation, the wear resistance and the surface sterilization rate of the damping cloth of the examples 1 to 3 are superior to those of the comparative example, which shows that the damping cloth prepared by the invention has higher wear resistance and antibacterial property.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (9)
1. The damping cloth with good wear resistance is characterized by comprising a primary backing cloth and wear-resistant paint;
the damping cloth with good wear resistance is prepared by the following steps:
firstly, unwinding a primary backing, and immersing the primary backing into a water immersion tank through a cloth storage rack, wherein the water immersion tank contains the following components in a mass ratio of 1: 100 anionic surfactant and water, then squeezing the water in the base cloth by a squeezing roll, and ironing the base cloth to be semi-dry by an ironing wheel;
and secondly, placing the semi-dry primary backing cloth on a coating table, uniformly coating the wear-resistant coating on the primary backing cloth by adopting a coating knife coating method, then curing the primary backing cloth in a curing tank at the temperature of 40-60 ℃, washing the cured cloth in a washing tank, and finally drying, shaping, rolling, grinding and shearing to obtain the damping cloth with good wear resistance.
2. The damping cloth with good abrasion resistance as claimed in claim 1, wherein the anionic surfactant is sodium dodecyl benzene sulfonate.
3. The damping cloth with good wear resistance as claimed in claim 1, wherein the preparation process of the wear-resistant coating is as follows:
mixing diphenylmethane diisocyanate and N, N-dimethylformamide according to the mass ratio of 1: 1, adding into a reaction kettle, and dropwise adding perfluorooctyl ethyl alcohol and N, N-dimethylformamide into the reaction kettle under the protection of nitrogen according to the weight ratio of 1 g: and (2) controlling the dropping speed of 20-30mL of mixed liquid to be 4 drops/second, after the dropping is finished, controlling the reaction temperature to be 50 ℃, stirring and reacting for 2.5 hours under the condition of the rotating speed of 70r/min, then heating to 60 ℃, adding polytetrahydrofuran into the reaction kettle, stirring and reacting for 1 hour, adding grinding particles and an antibacterial agent, continuing stirring for 2 hours, adding triethylene glycol, heating to 80 ℃, reacting for 3 hours, and obtaining the wear-resistant coating.
4. The damping cloth with good wear resistance as claimed in claim 3, wherein the mass ratio of the diphenylmethane diisocyanate, the perfluorooctylethyl alcohol, the polytetrahydrofuran, the abrasive particles and the antibacterial agent is 5: 5: 3-8: 0.3: 0.3.
5. the damping cloth with good wear resistance as claimed in claim 3, wherein the abrasive particles are prepared by the following steps:
step A1, mixing silica sol with the mass fraction of 30% and deionized water according to the volume ratio of 3: 20, adding the mixture into a three-neck flask, magnetically stirring the mixture for 10min at the rotation speed of 1000-2000r/min to obtain a mixed solution a, and mixing aluminum nitrate, hexamethylenetetramine and deionized water according to the dosage ratio of 0.1 mol: 0.5 mol: 300mL of the mixed solution is added into a beaker, the mixed solution b is obtained after ultrasonic dispersion is carried out for 10min at the frequency of 20-40kHz, the mixed solution b is dripped into the mixed solution a by a constant-pressure dropping funnel, reflux reaction is carried out for 2-3h at the rotating speed of 100-;
step A2, adding the hybrid particles and absolute ethyl alcohol into a round-bottom flask, performing ultrasonic dispersion for 1h at the frequency of 30-50kHz, adding deionized water and Tris hydrochloride into the round-bottom flask after the ultrasonic treatment is finished, stirring at the room temperature and the rotation speed of 100-200r/min for 10min, adding dopamine hydrochloride, increasing the rotation speed to 300r/min, performing stirring reaction for 4h, performing vacuum filtration after the reaction is finished, washing a filter cake for 3-5 times by using distilled water, and finally drying at the temperature of 70 ℃ for 24h under the vacuum condition to obtain the aminated hybrid particles;
and A3, adding the amino hybrid particles and dimethyl sulfoxide into a reaction kettle, stirring for 20min at the rotation speed of 100-200r/min, adding trifluoroacetic acid, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N, N' -dicyclohexylcarbodiimide into the reaction kettle, stirring for reaction for 1-2h at the room temperature with the rotation speed unchanged, filtering, washing a filter cake with an ethanol solution with the mass fraction of 30% until a washing solution is neutral, and finally drying in a drying box at the temperature of 70 ℃ until the weight is constant to obtain the ground particles.
6. The damping cloth with good wear resistance of claim 5, wherein the volume ratio of the mixed solution a to the mixed solution b in the step A1 is 1: 1; in the step A2, the dosage ratio of the hybrid particles, the absolute ethyl alcohol, the deionized water, the Tris hydrochloride and the dopamine hydrochloride is 10 g: 300-500 mL: 500 mL: 4 g: 1g of a compound; in step A3, the dosage ratio of amino hybrid particles, dimethyl sulfoxide, trifluoroacetic acid, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N, N' -dicyclohexylcarbodiimide is 3-5 g: 100-150 mL: 2 g: 0.5 g: 0.5 g.
7. The damping cloth with good wear resistance as claimed in claim 3, wherein the antibacterial agent is prepared by the following steps:
step S11, adding absolute ethyl alcohol into a round-bottom flask, placing the round-bottom flask into a 30 ℃ constant-temperature water bath kettle, adding glacial acetic acid and tetrabutyl titanate into the round-bottom flask, stirring the mixture for 20min under the condition that the rotation speed is 100 plus 200r/min, dropwise adding an ethanol solution with the volume fraction of 50% into the round-bottom flask by using a constant-pressure dropping funnel, controlling the dropwise adding speed to be 1-3 drops/second, continuously stirring the mixture for 30min after the dropwise adding is finished and the rotation speed is unchanged, standing the mixture for 12min to obtain gel, washing the gel for three times by using the deionized water and the absolute ethyl alcohol respectively, drying the gel for 2h at 120 ℃, transferring the gel into a crucible, calcining the gel for 4h at 650 ℃, naturally cooling the gel, and taking the gel out to obtain an intermediate;
step S12, adding nitric acid ketone trihydrate and absolute ethyl alcohol into a three-mouth flask, stirring for 2 hours at the rotation speed of 60-100r/min, placing the three-mouth flask into a constant-temperature water bath kettle at 60 ℃, continuously stirring, then adding an intermediate 1 into the three-mouth flask, reacting for 30 minutes at the rotation speed of 200-300r/min, adding a sodium hydroxide solution with the mass fraction of 30% and a glucose solution with the mass fraction of 20% into the three-mouth flask, stirring for 30 minutes at a constant rotation speed to obtain a suspension, centrifuging the suspension for 5-10 minutes at the rotation speed of 5000r/min, washing precipitates with deionized water and absolute ethyl alcohol for three times respectively, and drying for 12 hours in a vacuum drying box at 60 ℃ to obtain an intermediate 2;
step S13, adding epoxy chloropropane, 2-dimethylamino chloroethane hydrochloride and absolute ethyl alcohol into a dry three-neck flask, heating and refluxing for 24h at 80 ℃ under the protection of nitrogen, after the reaction is finished, performing rotary evaporation to 1/5 volume by using a rotary evaporator, recrystallizing in acetone, and finally adjusting the pH value to 8 by using a sodium hydroxide solution with the mass fraction of 15% to obtain a modifier;
and step S14, adding the intermediate 2, oleic acid and 40 mass percent ethanol solution into a reaction kettle, stirring for 30min at the rotation speed of 100-200r/min, adding the modifier into the reaction kettle, mixing and stirring for 24h under the protection of nitrogen, filtering, washing for 3-5 times by using acetone, and finally drying in an oven at 80 ℃ to constant weight to obtain the antibacterial agent.
8. The damping cloth with good wear resistance of claim 7, wherein the volume ratio of the absolute ethyl alcohol to the glacial acetic acid to the tetrabutyl titanate in the step S11 is 5: 1: 2, the dosage of the ethanol solution with 50 percent of volume fraction is the same as that of tetrabutyl titanate; in the step S12, the dosage ratio of the nitric acid ketone trihydrate, the absolute ethyl alcohol, the intermediate 1, the sodium hydroxide solution and the glucose solution is 0.5 g: 100mL of: 0.5 g: 3 g: 10 mL; in step S13, the ratio of the amounts of epichlorohydrin, 2-dimethylaminoethyl chloride hydrochloride and absolute ethanol is 12 mmol: 4 mmol: 20-40 mL; in the step S14, the dosage ratio of the intermediate 2, the oleic acid, the ethanol solution with the mass fraction of 40% and the modifier is 1-3 g: 1 g: 50-80 mL: 1g of the total weight of the composition.
9. The preparation method of the damping cloth with good wear resistance as claimed in claim 1, characterized by comprising the following steps:
firstly, unwinding a primary backing, and immersing the primary backing into a water immersion tank through a cloth storage rack, wherein the water immersion tank contains the following components in a mass ratio of 1: 100 anionic surfactant and water, then squeezing the water in the base cloth by a squeezing roll, and ironing the base cloth to be semi-dry by an ironing wheel;
and secondly, placing the semi-dry primary backing cloth on a coating table, uniformly coating the wear-resistant coating on the primary backing cloth by adopting a coating knife coating method, then curing the primary backing cloth in a curing tank at the temperature of 40-60 ℃, washing the cured cloth in a washing tank, and finally drying, shaping, rolling, grinding and shearing to obtain the damping cloth with good wear resistance.
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| CN114645450B (en) * | 2022-04-28 | 2024-05-14 | 汕头市鼎泰丰实业有限公司 | Dyeing and finishing process of energy-saving environment-friendly flame-retardant fabric |
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