Paint printing is a traditional printing process that is not subject to direct restrictions and is suitable for the printing of different fibers and various fabrics. It has been used more and more widely in recent years. Because nanomaterials have small size effects, quantum size effects, surface and interface effects, and macroscopic quantum tunneling effects, nanomaterials have many special properties.
1 Experimental preparation
1, 1 inspection fabric
28tex bleached cotton knitted fabric.
1, 2 instruments and equipment
JJ-1 High Power Electric Stirrer (Changzhou Guodian Co., Ltd.), Y571D Multi-Functional Color Fastness Friction Meter (Wenzhou Fangyuan Instrument Co., Ltd.), Y801A Constant Temperature Oven (Changzhou Textile Instrument Factory), Electronic Balance (Shenyang Longteng Rotation) Viscometer (Shanghai Qunxu Scientific Instrument Co., Ltd.), screen (80 mesh, 150 mesh, 200 mesh, 300 mesh), scraper.
1, 3 drugs
Synthetic thickener PTF (Lllied cololid, UK), self-crosslinking acrylic adhesive (Tianjin Chemical Reagent No. 4), paint, enamel 125% ammonia (Jilin Military Area Chemical Plant, Huaxue Pure), nano-Si02 (Changchun College of Biology, University of Industrial Science, particle size ≤ nm), urea (Tianjin Chemical Reagent Factory).
1.4 Process Formula and Process Flow
Paste formulation:
PTF 2 mL
Water x
A little ammonia
Total 100mL
Pigment paste xg
Adhesive 40g
Thickener 20g
Urea 5.0g
Nano Si02 y
Water z
Total 100g
1.5 Test Standard
GB 251-1995 Evaluation of stains with gray sample cards, GB/T 6151-1997 Test methods for color fastness of textiles, GB 250-1995 use gray sample cards for color evaluation, GB 6151 general rules for color fastness testing of textiles.
2 Experimental Results and Discussion
2.1 Effect of Nano-SiO2 Concentration on Printing Fastness
The effect of the nano-SiO2 concentration on the print fastness is shown in Table 1.
From the results of the fastness test data in Table 1, it can be seen that, under the same conditions, after the addition of nanomaterials in the printing paste, the fastness to rubbing and the scrubbing fastness of the printing are improved with the increase of the nanomaterial SiO2 concentration. The number of stages is also increasing, but when the concentration of nano-SiO2 is higher than 0.3%, the increase in printing fastness level begins to slow or even decline. The reason for this phenomenon is due to the quantum size effect of nanomaterials, the macroscopic quantum tunneling effect, and the large surface and interface effects, which cause many properties of the substance to undergo qualitative change, presenting many properties different from macroscopic objects. The small size effect of nanomaterials and the macroscopic quantum tunnel effect make it produce silt and seepage. It can penetrate into the unsaturated bonds of polymer materials and combine to form a three-dimensional network structure, thereby improving the strength, elasticity, abrasion resistance and water resistance of the material. The nano-materials have extremely strong surface activity, strong adsorption to the coating particles, and the formed shielding effect will greatly improve the color fastness and weather resistance of the coating.
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