CN109336119B - Modified silicon dioxide, wear-resistant coating and application - Google Patents
Modified silicon dioxide, wear-resistant coating and application Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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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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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
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- 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
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- 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
- D06N3/14—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 with polyurethanes
- D06N3/142—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 with polyurethanes mixture of polyurethanes with other resins in the same layer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
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Abstract
The invention discloses modified silicon dioxide, wear-resistant paint and application. The method comprises the steps of adding silicon dioxide into an ethanol water solution, adjusting the pH value by ammonia water, performing ultrasonic dispersion, adding gamma-mercaptopropyltriethoxysilane, stirring, heating to a certain temperature, stirring, adding zinc chloride, stirring, performing centrifugal separation to obtain modified silicon dioxide, and applying the modified silicon dioxide to the wear-resistant paint. Compared with the prior art: the wear-resistant coating prepared by adding the modified silicon dioxide is good in film forming property, strong in adhesive force and good in wear resistance on the surfaces of fabrics and leather, can be applied to the fields of fabrics, leather and the like, and improves the wear resistance of the fabrics.
Description
Technical Field
The invention relates to the field of wear-resistant coatings, in particular to modified silicon dioxide and application thereof to wear-resistant coatings.
Background
Since the first synthesis of Polyurethane (PU) resin by professor Bayer in 1937, otto, germany, the Polyurethane (PU) resin has been widely used in the chemical field because of its excellent chemical and physical and mechanical properties. The polyurethane coating has excellent wear resistance, flexibility, durability, corrosion resistance and insulativity, so that the polyurethane coating is widely applied to the fields of petrochemical equipment, oceans, ships, electromechanics, vehicles, textiles, leather, wood, plastics, buildings and the like.
However, most of the solvent-based polyurethane coatings on the market today contain a large amount of organic solvents and a certain amount of free isocyanate, which affects people's health and living environment. With the restrictions of environmental regulations of various countries on VOC and the emphasis on environmental protection, waterborne polyurethane is rapidly developed, has been widely applied in the fields of fabric, leather, adhesives and the like, and is gradually replacing solvent type polyurethane. With the advancement of technology, the strict control of VOC content and the improvement of environmental protection and health awareness of people, the aqueous PU becomes an important development direction.
At present, the development of the waterborne polyurethane is slow in China, so far, the industrialized waterborne polyurethane has few varieties and small yield, and is basically some aromatic pure polyurethane emulsions. The product has poor film forming property, mechanical property and water resistance, is mainly used for leather finishing agents with general performance and fabric treatment, and is difficult to be used for leather and fabric with high performance.
At present, the modified silicon dioxide is applied to wear-resistant paint, and is uniformly coated and cured on the surfaces of fabrics and leather by adopting a brushing or spraying mode, so that the modified silicon dioxide has good film forming property, strong adhesive force and good wear resistance.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides modified silicon dioxide, an abrasion-resistant coating and application.
The technical scheme of the invention is realized as follows:
a modified silica prepared by a process comprising: adding silicon dioxide into ethanol water solution, adjusting pH to 9-11 with ammonia water, performing ultrasonic dispersion, adding gamma-mercaptopropyltriethoxysilane, stirring for 10-30min, heating to 55-75 deg.C, stirring for 50-70min, adding zinc chloride, stirring for 2-5h at 35-40 deg.C, performing centrifugal separation, removing supernatant, and drying precipitate to obtain the final product.
In another aspect, a modified silica is prepared by a method comprising: adding 5-15g of silicon dioxide into 100-150g of 60-80% ethanol aqueous solution by volume fraction, adjusting the pH to 9-11 by using 15-25% ammonia water by mass fraction, then performing ultrasonic dispersion for 20-40min, adding 10-20g of gamma-mercaptopropyltriethoxysilane at the rotating speed of 200-400r/min, stirring for 10-30min, then heating to 55-75 ℃, stirring for 50-70min at the rotating speed of 200-400r/min, adding zinc chloride at the temperature of 35-40 ℃, stirring for 2-5h at the rotating speed of 200-400r/min, performing centrifugal separation for 20-40min at 5000-8000r/min, and drying the precipitate by using supernatant fluid to obtain the product.
Preferably, the drying temperature is 900-110 ℃ and the drying time is 20-30 h.
Preferably, the molar ratio of zinc chloride to silica is (1-2.5): 1.
the invention also discloses the modified silicon dioxide and application thereof in wear-resistant paint.
The concrete application is as follows:
the wear-resistant coating is prepared from the following raw materials in parts by weight: 60-70 parts of water-based polyurethane emulsion, 20-30 parts of water-based acrylic emulsion, 3-8 parts of modified silicon dioxide, 0.5-1.5 parts of emulsifying dispersant, 1-2 parts of quaternary ammonium salt additive and 20-40 parts of water. And (3) uniformly mixing the raw materials to obtain the wear-resistant coating.
The emulsifying dispersant is nonylphenol polyoxyethylene ether.
The quaternary ammonium salt additive is one or a mixture of poly-3-acryloyl chloride propyl trimethyl ammonium chloride and amphiphilic O-hydroxyethyl chitosan dodecyl ammonium chloride. Preferably, the quaternary ammonium salt additive is poly-3-acryloyl chloride propyl trimethyl ammonium chloride and amphiphilic O-hydroxyethyl chitosan dodecyl ammonium chloride according to a mass ratio of 1: (1.5-2.5).
The invention has the beneficial effects that:
the modified silicon dioxide is applied to the wear-resistant coating, so that the wear resistance of the wear-resistant coating can be obviously improved, and the adhesive force of the wear-resistant coating can be also obviously improved.
Detailed Description
The features and advantages of the present invention will become more apparent and appreciated from the following detailed description of the invention.
The materials used are described below: the silicon dioxide is silicon dioxide provided by Nanjing Tianxing New Material Co., Ltd and has the model number of TSP-H10, and the primary particle size is 20 nm. Gamma-mercaptopropyltriethoxysilane, CAS No.: 14814-09-6. Zinc chloride, CAS No.: 7646-85-7. The polyoxyethylene nonyl phenyl ether is polyoxyethylene nonyl phenyl ether with NP-10 type provided by Wuhan La Na pharmaceutical chemical Co. The aqueous polyurethane emulsion was prepared according to the method shown in example 2 of chinese patent application No. 201510963796.5. Poly-3-acryloylchloropropyltrimethylammonium chloride was prepared as shown in example 1 of the Chinese patent application No. 201310460988.5. Amphiphilic O-hydroxyethyl chitosan dodecyl ammonium chloride was prepared according to the method shown in example 3 of chinese patent application No. 200710056993.4. The aqueous acrylic emulsion was prepared according to the method shown in example 1 of chinese patent application No. 201410838709.9.
Example 1
Wear-resistant sports clothing comprises base cloth and wear-resistant coating.
The wear-resistant coating is prepared from the following raw materials in parts by weight: 65 parts of aqueous polyurethane emulsion, 25 parts of aqueous acrylic emulsion, 5 parts of silicon dioxide, 1 part of emulsifying dispersant, 1.5 parts of quaternary ammonium salt additive and 30 parts of deionized water.
The emulsifying dispersant is nonylphenol polyoxyethylene ether.
The quaternary ammonium salt additive is amphiphilic O-hydroxyethyl chitosan dodecyl ammonium chloride.
The preparation process of the wear-resistant sports garment comprises the following steps:
(1) weighing the following raw materials in parts by weight: 65 parts of aqueous polyurethane emulsion, 25 parts of aqueous acrylic emulsion, 5 parts of silicon dioxide, 1 part of emulsifying dispersant, 1.5 parts of quaternary ammonium salt additive and 30 parts of deionized water; stirring the raw materials at a rotating speed of 300r/min for 20min, and uniformly mixing to obtain the wear-resistant coating;
(2) the wear-resistant coating is uniformly coated on polyester grey cloth (the gram weight provided by Changxin textile company Limited is 65 g/m)2The terylene grey cloth comprises 100 percent of terylene, 75D yarn count and 150D), and the coating amount of the wear-resistant coating on the terylene grey cloth is 10g/m2Airing at the temperature of 30 ℃ for 48 hours to obtain the wear-resistant fabric with the upper layer being wear-resistant paint and the lower layer being base cloth; the base cloth is made of terylene grey cloth, and the gram weight provided by Changxing Xin textile company Limited is 65g/m2The terylene grey cloth comprises 100 percent of terylene and 75D-150D yarn count;
(3) and processing and sewing the wear-resistant fabric according to a conventional sportswear preparation process to obtain the wear-resistant sportswear.
Example 2
Wear-resistant sports clothing comprises base cloth and wear-resistant coating.
The wear-resistant coating is prepared from the following raw materials in parts by weight: 65 parts of aqueous polyurethane emulsion, 25 parts of aqueous acrylic emulsion, 5 parts of modified silicon dioxide, 1 part of emulsifying dispersant, 1.5 parts of quaternary ammonium salt additive and 30 parts of deionized water.
The modified silica is prepared by the following method: adding 10g of silicon dioxide into 120g of ethanol aqueous solution with the volume fraction of 70%, adjusting the pH to 10 by using ammonia water with the mass fraction of 20%, then ultrasonically dispersing for 30min, wherein the ultrasonic power of the ultrasonic dispersion is 350W, the ultrasonic frequency is 30kHz, adding 15g of gamma-mercaptopropyltriethoxysilane, stirring for 20min at the rotating speed of 300r/min, then heating to 65 ℃, stirring for 60min at the rotating speed of 300r/min, adding zinc chloride, stirring for 3.5h at the temperature of 38 ℃ at the rotating speed of 300r/min, and the molar ratio of the zinc chloride to the silicon dioxide is 2: 1, carrying out centrifugal separation at 6000r/min for 30min, removing supernatant, and drying the precipitate at the temperature of 95 ℃ for 24h to obtain the modified silicon dioxide.
The emulsifying dispersant is nonylphenol polyoxyethylene ether.
The quaternary ammonium salt additive is amphiphilic O-hydroxyethyl chitosan dodecyl ammonium chloride.
The preparation process of the wear-resistant sports garment comprises the following steps:
(1) weighing the following raw materials in parts by weight: 65 parts of aqueous polyurethane emulsion, 25 parts of aqueous acrylic emulsion, 5 parts of modified silicon dioxide, 1 part of emulsifying dispersant, 1.5 parts of quaternary ammonium salt additive and 30 parts of deionized water; stirring the raw materials at a rotating speed of 300r/min for 20min, and uniformly mixing to obtain the wear-resistant coating;
(2) the wear-resistant coating is uniformly coated on polyester grey cloth (the gram weight provided by Changxin textile company Limited is 65 g/m)2The terylene grey cloth comprises 100 percent of terylene, 75D yarn count and 150D), and the coating amount of the wear-resistant coating on the terylene grey cloth is 10g/m2Airing at the temperature of 30 ℃ for 48 hours to obtain the wear-resistant fabric with the upper layer being wear-resistant paint and the lower layer being base cloth; the base cloth is made of terylene grey cloth, and the gram weight provided by Changxing Xin textile company Limited is 65g/m2The terylene grey cloth comprises 100 percent of terylene and 75D-150D yarn count;
(3) and processing and sewing the wear-resistant fabric according to a conventional sportswear preparation process to obtain the wear-resistant sportswear.
Example 3
Wear-resistant sports clothing comprises base cloth and wear-resistant coating.
The wear-resistant coating is prepared from the following raw materials in parts by weight: 65 parts of aqueous polyurethane emulsion, 25 parts of aqueous acrylic emulsion, 5 parts of modified silicon dioxide, 1 part of emulsifying dispersant, 1.5 parts of quaternary ammonium salt additive and 30 parts of deionized water.
The modified silica is prepared by the following method: adding 10g of silicon dioxide into 120g of ethanol aqueous solution with the volume fraction of 70%, then carrying out ultrasonic dispersion for 30min, wherein the ultrasonic power of the ultrasonic dispersion is 350W, the ultrasonic frequency is 30kHz, adding 15g of gamma-mercaptopropyltriethoxysilane, stirring for 20min at the rotating speed of 300r/min, then heating to 65 ℃, stirring for 60min at the rotating speed of 300r/min, adding zinc chloride, stirring for 3.5h at the temperature of 38 ℃ at the rotating speed of 300r/min, and the molar ratio of the zinc chloride to the silicon dioxide is 2: 1, carrying out centrifugal separation at 6000r/min for 30min, removing supernatant, and drying the precipitate at the temperature of 95 ℃ for 24h to obtain the modified silicon dioxide.
The emulsifying dispersant is nonylphenol polyoxyethylene ether.
The quaternary ammonium salt additive is amphiphilic O-hydroxyethyl chitosan dodecyl ammonium chloride.
The preparation process of the wear-resistant sports garment comprises the following steps:
(1) weighing the following raw materials in parts by weight: 65 parts of aqueous polyurethane emulsion, 25 parts of aqueous acrylic emulsion, 5 parts of modified silicon dioxide, 1 part of emulsifying dispersant, 1.5 parts of quaternary ammonium salt additive and 30 parts of deionized water; stirring the raw materials at a rotating speed of 300r/min for 20min, and uniformly mixing to obtain the wear-resistant coating;
(2) the wear-resistant coating is uniformly coated on polyester grey cloth (the gram weight provided by Changxin textile company Limited is 65 g/m)2The terylene grey cloth comprises 100 percent of terylene, 75D yarn count and 150D), and the coating amount of the wear-resistant coating on the terylene grey cloth is 10g/m2Airing at the temperature of 30 ℃ for 48 hours to obtain the wear-resistant fabric with the upper layer being wear-resistant paint and the lower layer being base cloth; the base cloth is made of terylene grey cloth, and the gram weight provided by Changxing Xin textile company Limited is 65g/m2The terylene grey cloth comprises 100 percent of terylene and 75D-150D yarn count;
(3) and processing and sewing the wear-resistant fabric according to a conventional sportswear preparation process to obtain the wear-resistant sportswear.
Example 4
Wear-resistant sports clothing comprises a base cloth layer and wear-resistant paint.
The wear-resistant coating is prepared from the following raw materials in parts by weight: 65 parts of aqueous polyurethane emulsion, 25 parts of aqueous acrylic emulsion, 5 parts of modified silicon dioxide, 1 part of emulsifying dispersant, 1.5 parts of quaternary ammonium salt additive and 30 parts of deionized water.
The modified silica is prepared by the following method: adding 10g of silicon dioxide into 120g of ethanol aqueous solution with the volume fraction of 70%, adjusting the pH to 10 by using ammonia water with the mass fraction of 20%, then ultrasonically dispersing for 30min, wherein the ultrasonic power of the ultrasonic dispersion is 350W, the ultrasonic frequency is 30kHz, adding 15g of gamma-mercaptopropyltriethoxysilane, stirring for 20min at the rotating speed of 300r/min, then heating to 65 ℃, stirring for 60min at the rotating speed of 300r/min, adding zinc chloride, stirring for 3.5h at the temperature of 38 ℃ at the rotating speed of 300r/min, and the molar ratio of the zinc chloride to the silicon dioxide is 2: 1, carrying out centrifugal separation at 6000r/min for 30min, removing supernatant, and drying the precipitate at the temperature of 95 ℃ for 24h to obtain the modified silicon dioxide.
The emulsifying dispersant is nonylphenol polyoxyethylene ether.
The quaternary ammonium salt additive is poly-3-acryloyl chloride propyl trimethyl ammonium chloride.
The preparation process of the wear-resistant sports garment comprises the following steps:
(1) weighing the following raw materials in parts by weight: 65 parts of aqueous polyurethane emulsion, 25 parts of aqueous acrylic emulsion, 5 parts of modified silicon dioxide, 1 part of emulsifying dispersant, 1.5 parts of quaternary ammonium salt additive and 30 parts of deionized water; stirring the raw materials at a rotating speed of 300r/min for 20min, and uniformly mixing to obtain the wear-resistant coating;
(2) the wear-resistant coating is uniformly coated on polyester grey cloth (the gram weight provided by Changxin textile company Limited is 65 g/m)2The terylene grey cloth comprises 100 percent of terylene, 75D yarn count and 150D), and the coating amount of the wear-resistant coating on the terylene grey cloth is 10g/m2At a temperature ofAiring at 30 ℃ for 48h to obtain the wear-resistant fabric with the upper layer being wear-resistant paint and the lower layer being base cloth; the base cloth is made of terylene grey cloth, and the gram weight provided by Changxing Xin textile company Limited is 65g/m2The terylene grey cloth comprises 100 percent of terylene and 75D-150D yarn count;
(3) and processing and sewing the wear-resistant fabric according to a conventional sportswear preparation process to obtain the wear-resistant sportswear.
Example 5
Wear-resistant sports clothing comprises a base cloth layer and wear-resistant paint.
The wear-resistant coating is prepared from the following raw materials in parts by weight: 65 parts of aqueous polyurethane emulsion, 25 parts of aqueous acrylic emulsion, 5 parts of modified silicon dioxide, 1 part of emulsifying dispersant, 1.5 parts of quaternary ammonium salt additive and 30 parts of deionized water.
The modified silica is prepared by the following method: adding 10g of silicon dioxide into 120g of ethanol aqueous solution with the volume fraction of 70%, adjusting the pH to 10 by using ammonia water with the mass fraction of 20%, then ultrasonically dispersing for 30min, wherein the ultrasonic power of the ultrasonic dispersion is 350W, the ultrasonic frequency is 30kHz, adding 15g of gamma-mercaptopropyltriethoxysilane, stirring for 20min at the rotating speed of 300r/min, then heating to 65 ℃, stirring for 60min at the rotating speed of 300r/min, adding zinc chloride, stirring for 3.5h at the temperature of 38 ℃ at the rotating speed of 300r/min, and the molar ratio of the zinc chloride to the silicon dioxide is 2: 1, carrying out centrifugal separation at 6000r/min for 30min, removing supernatant, and drying the precipitate at the temperature of 95 ℃ for 24h to obtain the modified silicon dioxide.
The emulsifying dispersant is nonylphenol polyoxyethylene ether.
The quaternary ammonium salt additive is poly-3-acryloyl chloride propyl trimethyl ammonium chloride and amphiphilic O-hydroxyethyl chitosan dodecyl ammonium chloride according to the mass ratio of 1: 2, or a mixture thereof.
The preparation process of the wear-resistant sports garment comprises the following steps:
(1) weighing the following raw materials in parts by weight: 65 parts of aqueous polyurethane emulsion, 25 parts of aqueous acrylic emulsion, 5 parts of modified silicon dioxide, 1 part of emulsifying dispersant, 1.5 parts of quaternary ammonium salt additive and 30 parts of deionized water; stirring the raw materials at a rotating speed of 300r/min for 20min, and uniformly mixing to obtain the wear-resistant coating;
(2) the wear-resistant coating is uniformly coated on polyester grey cloth (the gram weight provided by Changxin textile company Limited is 65 g/m)2The terylene grey cloth comprises 100 percent of terylene, 75D yarn count and 150D), and the coating amount of the wear-resistant coating on the terylene grey cloth is 10g/m2Airing at the temperature of 30 ℃ for 48 hours to obtain the wear-resistant fabric with the upper layer being wear-resistant paint and the lower layer being base cloth; the base cloth is made of terylene grey cloth, and the gram weight provided by Changxing Xin textile company Limited is 65g/m2The terylene grey cloth comprises 100 percent of terylene and 75D-150D yarn count;
(3) and processing and sewing the wear-resistant fabric according to a conventional sportswear preparation process to obtain the wear-resistant sportswear.
Test example 1
The abrasion-resistant fabrics prepared in examples 1 to 5 were subjected to abrasion resistance tests. The abrasion resistance test was carried out according to CEN EN ISO5981-2007 standard. Specific results are shown in table 1.
Table 1: abrasion resistance test result table
| Wear resistance | |
| Example 1 | 951 |
| Example 2 | 1106 |
| Example 3 | 1017 |
| Example 4 | 1044 |
| Example 5 | 1239 |
Test example 2
The abrasion-resistant fabrics prepared in examples 1 to 5 were subjected to an antibacterial property test. The national standard GB/T20944.3-2008 < evaluation of antibacterial properties of textiles part 3: the quantitative antibacterial property test is carried out by the oscillation method, the antibacterial property of the wear-resistant fabric after being washed for 30 times is tested by adopting a washing method of a color fastness to washing tester, and candida albicans (ATCC10231) is used as a test strain. The specific results are shown in Table 2.
Table 2: antibacterial performance test result table
| Antibacterial rate,% of | |
| Example 1 | 92.8 |
| Example 2 | 96.3 |
| Example 3 | 94.1 |
| Example 4 | 95.4 |
| Example 5 | 98.9 |
Test example 3
The abrasion resistant coatings prepared in examples 2, 4, 5 were subjected to coating adhesion strength tests. The coating adhesion strength of the coating fabric is tested by adopting a method for measuring the coating adhesion strength of the coating fabric in the Chinese industry standard FZ/T01010-91. The specific test results are shown in table 3.
Table 3: adhesion Strength results Table
According to the wear-resistant sports garment provided by the technical scheme, after the wear-resistant fabric is subjected to coating treatment, the coating is stable in performance, the base fabric layer has excellent wear resistance, the antibacterial performance of the fabric is better improved, and the wear-resistant sports garment is very suitable for being used as a light outdoor product with certain requirements on elasticity and wear resistance and meets the related requirements of work and life of people.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (5)
1. A modified silica, characterized in that it is prepared by a process comprising: adding 5-15g of silicon dioxide into 100-150g of 60-80% ethanol aqueous solution by volume fraction, adjusting the pH to 9-11 by using 15-25% ammonia water by mass fraction, then performing ultrasonic dispersion for 20-40min, adding 10-20g of gamma-mercaptopropyltriethoxysilane, stirring for 10-30min at the rotating speed of 200-400r/min, then heating to 55-75 ℃, stirring for 50-70min at the rotating speed of 200-400r/min, adding zinc chloride, stirring for 2-5h at the temperature of 35-40 ℃ at the rotating speed of 200-400r/min, performing centrifugal separation for 20-40min at 5000-8000r/min, and drying the precipitate by using supernatant fluid to obtain the silicon dioxide-based catalyst; the molar ratio of the zinc chloride to the silicon dioxide is (1-2.5): 1.
2. the modified silica of claim 1, wherein: the drying temperature is 900-110 ℃, and the drying time is 20-30 h.
3. The wear-resistant coating is characterized in that: comprising the modified silica as claimed in claim 1 or 2.
4. The wear-resistant coating as recited in claim 3, characterized in that the coating is prepared from the following raw materials in parts by weight: 60-70 parts of aqueous polyurethane emulsion, 20-30 parts of aqueous acrylic emulsion, 3-8 parts of modified silicon dioxide as described in claim 1 or 2, 0.5-1.5 parts of emulsifying dispersant, 1-2 parts of quaternary ammonium salt additive and 20-40 parts of water; the emulsifying dispersant is nonylphenol polyoxyethylene ether; the quaternary ammonium salt additive is poly-3-acryloyl chloride propyl trimethyl ammonium chloride and amphiphilic O-hydroxyethyl chitosan dodecyl ammonium chloride according to the mass ratio of 1: (1.5-2.5).
5. The application of the modified silicon dioxide in preparing the wear-resistant coating is characterized in that the wear-resistant coating is prepared from the following raw materials in parts by weight: 60-70 parts of aqueous polyurethane emulsion, 20-30 parts of aqueous acrylic emulsion, 3-8 parts of modified silicon dioxide as described in claim 1 or 2, 0.5-1.5 parts of emulsifying dispersant, 1-2 parts of quaternary ammonium salt additive and 20-40 parts of water.
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| CN109336119B true CN109336119B (en) | 2021-01-05 |
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