Fabric darkening agent and preparation method thereof, and applications of fabric darkening agent in polyester fabric darkening

A technology of polyester fabric and darkening agent, which is applied in textiles, papermaking, fiber treatment, etc., can solve the problems of difficult-to-apply fabrics, etc., and achieve the effect of easy implementation, obvious fabric deepening effect, and durable fabric deepening effect

Inactive Publication Date: 2016-01-13
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, PEG is used as a pore-forming agent, and PEG and SiO 2 The coating solution is prepared by mixing; the substrate after coating is calcined at 400°C to remove PEG, and nanopores are formed in the silica sol film, thus endowed with anti-reflection properties. However, this method is only suitable for high-temperature-resistant substrates, and it is difficult to applied to fabrics; in addition, the SiO used 2 The mass concentration of PEG is only 2.6%, and in order to obtain high porosity, the mass concentration of PEG is as high as SiO 2 three times

Method used

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  • Fabric darkening agent and preparation method thereof, and applications of fabric darkening agent in polyester fabric darkening
  • Fabric darkening agent and preparation method thereof, and applications of fabric darkening agent in polyester fabric darkening
  • Fabric darkening agent and preparation method thereof, and applications of fabric darkening agent in polyester fabric darkening

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] At room temperature of 25°C, weigh 100g of deionized water and add it to 50g of silicon dioxide aqueous dispersion (average particle size 20-25nm, solid content 30%, Zhejiang Yuda Chemical Co., Ltd., ZS-30), After mechanically stirring and mixing evenly, add 1.5g PEG400 (polyethylene glycol, number average molecular weight is 400) dropwise, fully stir to make it evenly mixed, the prepared mixed solution of silicon dioxide and PEG400 is called product 1, the solid content 10%.

[0050] After the product 1 is diluted, the particle size distribution curve is measured by a Malvern nanometer particle size analyzer, as shown in figure 1 shown. It can be seen from the figure that the particle size of product 1 is about 21nm, and the particle size distribution is narrow.

Embodiment 2

[0052] Under the condition of room temperature 25°C, weigh 100g of silicon dioxide aqueous dispersion (solid content 30%, average particle size 20-25nm, Zhejiang Yuda Chemical Co., Ltd., ZS-30) into 150g of deionized water, mechanically After stirring and mixing evenly, add 4.5g PEG600 dropwise, fully stir and make it uniformly mixed, the mixed solution of the prepared silicon dioxide and PEG600 (polyethylene glycol, number average molecular weight is 600) is called product 2, and the solid content is 12%.

[0053] After the product 2 is diluted, the particle size distribution curve is measured by a Malvern nanometer particle size analyzer, as shown in figure 2 shown. It can be seen from the figure that the particle size of the product 2 is about 24nm, which is consistent with the particle size of the product 1 obtained in the above-mentioned Example 1. It can be seen that increasing the molecular weight and dosage of PEG has no effect on the particle size of silica.

Embodiment 3

[0055] Under the condition of room temperature 25°C, weigh 70g of silicon dioxide aqueous dispersion (solid content 30%, average particle size 20-25nm, Zhejiang Yuda Chemical Co., Ltd., ZS-30) into 180g of deionized water, mechanically After stirring and mixing evenly, 6.3gPEG200 (polyethylene glycol, number average molecular weight is 200) is added dropwise, fully stirred to make it uniformly mixed, the mixed solution of silicon dioxide and PEG200 is called product 3, and the solid content is 8.4%.

[0056] The transmission electron micrograph of the product 3 that embodiment 3 obtains is as image 3 as shown, Figure 4 It is a transmission electron micrograph of commercial silicon dioxide (i.e., silicon dioxide in an aqueous dispersion of silicon dioxide). Depend on image 3 and Figure 4 It can be seen that after adding PEG200, the mixed solution of silica and PEG200 has no obvious difference in nanoparticle morphology compared with commercial silica, and still maintain...

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Abstract

The present invention discloses a fabric darkening agent and a preparation method thereof, and applications of the fabric darkening agent in polyester fabric darkening, wherein the fabric darkening agent is prepared from the following raw materials by weight: 50-150 parts of a silica dispersion, 50-300 parts of water, and 0.075-13.5 parts of polyethylene glycol, wherein the solid content of the silica in the silica dispersion is 20-40 wt%. The fast preparation method of the fabric darkening agent comprises: diluting the silica dispersion with the water, then adding the polyethylene glycol (PEG), and uniformly mixing to obtain the fabric darkening agent. According to the present invention, the silica particle dispersion and a suitable amount of the polyethylene glycol (PEG) are blended to prepare the fabric darkening agent, and the preparation method is simple and rapid, and is easy to perform; and the polyester fabric is finished through the simple impregnation process and then baking is performed, such that the fabric darkening effect is obvious and the durability is provided.

Description

technical field [0001] The invention relates to the technical field of fabric darkening agents, in particular to a fabric darkening agent, a preparation method thereof and an application in polyester fabric darkening. Background technique [0002] Among many fiber varieties, the surface of polyester and silk fibers is smooth, and the difference in refractive index with air is large (polyester: 0.73; silk: 0.60), the incident light is reflected in a large amount, and the light intensity transmitted into the fiber is small, resulting in the dye color efficiency. Low, it is difficult for the fabric to present a strong color style. This phenomenon is particularly evident for fine denier and ultrafine denier polyester fibers. [0003] Fabric darkening finishing refers to a finishing method that realizes darkening of fabrics without increasing the amount of dyes. In the existing deepening finishing technology, organic fluorine and silicone resin are often used to form a layer of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D06M15/53D06M101/32
Inventor 杨雷蒋慧冯晓磊沈一峰
Owner ZHEJIANG SCI-TECH UNIV
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