CN201770820U - Water-oil repellent wool knitted fabric - Google Patents

Abstract

The utility model belongs to the field of textile, and particularly relates to a water-oil repellent weft knitted fabric. The wool knitted fabric comprises a base fabric knitted by warp fiber and woof fiber, an ultraviolet radiation film coating is coated on the base fabric, a hydrophobic and oleophobic layer is arranged on the surface of the film coating, and the warp fiber and the weft fiber are formed by stranding wool fiber and metal fiber. The utility model provides the wool knitted fabric which is water repellent, oil repellent and anti-static.

Description

Water and oil repellent wool knitted fabric

technical field

The utility model relates to a textile, in particular to a water and oil repellent wool knitted fabric.

Background technique

With the acceleration of people's life rhythm and the increase of outdoor sports, people spend less and less time on housework, and the simplification of clothing care has become another basic requirement for people to choose clothing. Therefore, waterproof, oil-proof and anti-fouling functions Easy-care fabrics have been popular with consumers since they hit the market. This type of clothing has the following characteristics: it will not be wetted by water and oily dirt to form stains during use, and it will not absorb dust on the surface of the fiber; once the fabric is stained, it is easy to wash off, and it will not absorb dirt during washing. Wool fabric has always been regarded as the first choice fabric for high-end clothing. It has unique appearance style and excellent thermal function, and has the characteristics of soft hand, bright color, light and comfortable to wear, etc., but it lacks the "three-proof" function and is easy to wear. static electricity. In order to meet the market demand, the research and development of easy-care all-wool knitted fabrics with waterproof, oil-proof and anti-fouling functions has a broad market space and important economic significance.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a wool knitted fabric capable of repelling water and oil as well as antistatic.

A water and oil-repellent wool knitted fabric, which is woven into a base cloth by warp and weft fibers, and a layer of ultraviolet radiation coating film is coated on the base cloth, and a hydrophobic and oil-repellent layer is provided on the surface of the coating film.

Preferably, the hydrophobic and oleophobic layer has a network structure.

Preferably, the warp fibers and weft fibers are formed by twisting wool fibers and metal fibers.

As a further preference, the wool fiber is finished through Asahigard E082 and Magnasoft SRS finishing agent, and the mass ratio of Asahigard E082 and Magnasoft SRS in the finishing agent is 4:1.

The practical beneficial effects of the utility model are:

1. The wool fiber of the utility model is finished with Asahigard E082 and Magnasoft SRS finishing agent, which can endow the utility model with water and oil repellency and excellent hand feeling;

2. The base fabric of the utility model is coated with a layer of ultraviolet radiation coating film, and the surface of the coating film is provided with a hydrophobic and oil-repellent layer, which enhances the water and oil repellency of the utility model, and the ultraviolet radiation coating film makes the utility model have Anti-radiation function;

3. The warp fiber and the weft fiber are made of wool fiber and metal fiber, which makes the utility model have good antistatic ability.

Description of drawings

Fig. 1 is a structural representation of the utility model;

In the figure, the numbers of each part are as follows: 1-base cloth, 2-ultraviolet radiation coating film, 3-hydrophobic and oil-repellent layer.                       

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1, a kind of water-repellent and oil-repellent wool knitted fabric is woven into a base cloth 1 by warp and weft fibers, and the base cloth 1 is coated with a layer of ultraviolet radiation coating film 2, and the surface of the ultraviolet radiation coating film 2 A hydrophobic and oil-repellent layer 3 in a network structure is provided. The warp and weft fibers are made of wool fibers and metal fibers. The wool fiber is finished by Asahigard E082 and Magnasoft SRS finishing agent, and the mass ratio of Asahigard E082 and Magnasoft SRS in the finishing agent is 4:1. the

Fabrics with "three defense" functions are generally obtained through water and oil repellent finishing. The water and oil repellent finishing agent used is a finishing agent with a special molecular structure, which can change the composition of the fiber surface layer, making it difficult for water and oil to spread on the surface of the fabric.

The control of process parameters during winding in this embodiment: the winding speed of wool yarn should be lower than that of cotton yarn, controlled at less than 200m/min, and the winding tension should be controlled at no more than 15%~20% of the yarn breaking strength. At the same time, in order to reduce the friction of the yarn on the machine parts during the weaving process, to protect the yarn from injury, and to achieve the smooth progress of weaving, the wool yarn must be waxed and controlled at about 0.5%. When wool is woven on a flat knitting machine, the friction between it and the machine parts is relatively large. In addition to waxing, properly increasing the yarn tension and pulling force during the weaving process can make the weaving go smoothly, and at the same time improve the quality of the fabric. Especially on the two edges of the pull, the pull of the roller should be larger than that in the middle, so as to prevent the two ends of the fabric from floating.

The amount of finishing agent in this example is 50g/L, the baking temperature is 140°C, the baking time is 3min, the liquid extrusion rate is 200-210%, and the finishing method of two dipping and two rolling is adopted. The water and oil repellent finishing agent Asahigard E082 and Magnasoft The effect of the mass ratio of SRS softening agent on the water and oil repellency and hand feeling of the fabric is shown in the table below.

mass ratio Extrusion ratio/% Water repellency/grade Oil Repellent/Grade feel 1:0 208 5 7 Difference 1:1 201 5 6 middle 1:2 206 5 6 middle 1:3 203 4+ 5 good 1:4 205 4 5 good 1:5 204 3 4+ good 0:1 205 2 3- excellent

It can be seen from the above table that when the water and oil repellent finishing agent Asahigard E082 is used alone, the fabric has excellent water and oil repellency, but the hand feeling and comfort are poor after finishing; when the soft finishing agent Magnasoft SRS is used alone, The fabric feels good, but has very poor water and oil repellency. When the two are used in combination, as the mass ratio of Asahigard E082 and Magnasoft SRS softening agent decreases, the water and oil repellency of the fabric decreases and the hand feel becomes better. When the mass ratio is reduced to 1:5, the water and oil repellency of the fabric can no longer meet the requirements. Therefore, the present embodiment confirms that the water and oil repellent finishing agent Asahigard E061 and Magnasoft SRS soft finishing agent are compounded into a super amphiphobic and easy-care finishing agent with a mass ratio of 1:4. At this time, the fabric not only has better water repellency Oil repellency, and has a good feel.

Selection of finishing agent concentration: fixed baking temperature of 140°C, baking time of 3 minutes, liquid rolling rate of 200-210%, two-dipping and two-rolling finishing method, the concentration of ultra-drying and easy-care finishing agent has a great influence on the water and oil repellency of fabrics The influence of and feel is shown in the table below.

Concentration/g.L-1 Extrusion ratio/% Water repellency/level Oil Repellent/Grade feel 10 208 3- 4 better 20 204 3- 4- better 30 207 4 4+ good 40 210 4 5 good

50 203 4+ 5+ better

It can be seen from the above table that as the concentration of the finishing agent increases, the amount of fluorine-containing substances and silicone polymers attached to the fabric after baking increases, and the water and oil repellency of the fabric increases. Due to the presence of silicone polymers, the fabric has always maintained a good hand. When the finishing agent concentration exceeds 30g/L, the water and oil repellency of the fabric can meet the requirements, and the hand feeling is good. But when the concentration of the finishing agent exceeds 50g/L, the feel of the fabric decreases slightly. Therefore, the concentration of finishing agent in this embodiment is selected as 30-40g/L, and can be adjusted according to factors such as fabric thickness.

The choice of baking temperature: the amount of fixed finishing agent is 50g/L, the baking time is 3min, the liquid rolling rate is 200-210%, and the finishing method of two dipping and two rolling is adopted. The influence of baking temperature on the water and oil repellency of the fabric is as follows shown in the table.

temperature/℃ Extrusion ratio/% Water repellency/grade before washing Oil repellency/grade before washing Water repellency/level after 20 washes Oil repellency/grade after 20 washes 100 202 3 4- 2- 2+ 110 206 3+ 4 2- 3 120 209 4 4+ 3 4- 130 204 4 5 3 4+ 140 202 4 5 4 4+ 150 207 4 5 4 5-

It can be seen from the above table that the temperature has little effect on the water and oil repellency of the fabric, but after 20 times of water washing, the water and oil repellency of the fabric with a baking temperature of less than 130°C decreases greatly, which cannot meet the requirements. This is mainly due to the low baking temperature, insufficient film-forming cross-linking of the water- and oil-repellent finishing agent Asahigard E082 and Magnasoft SRS softening agent, poor film-forming mechanical properties, and poor washing resistance. Therefore, it is determined in this embodiment that when the finishing agent is used to finish the fabric, it is better to choose 140°C for the baking temperature.

Selection of baking time: the amount of fixed finishing agent is 50g/L, the baking temperature is 140°C, the liquid rolling rate is 200-210%, and the finishing method of two dipping and two rolling is adopted. The effect of baking time on the water and oil repellency of the fabric As shown in the table below.

time/min Extrusion ratio/% Water repellency/grade before washing Oil repellency/grade before washing Water repellency/level after 20 washes Oil repellency/grade after 20 washes 1 203 3+ 4 3- 4- 2 206 3+ 4+ 3- 4- 3 205 3+ 4+ 3 4+ 4 203 4 5 4 4+ 5 210 4 5 4 5

It can be seen from the above table that when the finishing fabric is baked for less than 4 minutes, the water and oil repellency of the fabric decreases greatly, which cannot meet the requirements. In this embodiment, when the finishing agent is determined to finish the fabric, the baking time is selected as 4 minutes.

Product technical performance:

(1) Water repellency (washing 20 times) ≥ grade 4;

(2) Oil repellency (washing 20 times) ≥ grade 4;

(3) Comply with the EU PFOS Directive;

(4) Color fastness to water: ≥ grade 3;

(5) Color fastness to washing: ≥ grade 3;

(6) Color fastness to rubbing (dry rubbing): ≥3 grades, color fastness to rubbing (wet rubbing): ≥2-3 grades;

(7) The ecological indicators meet the GB18401 standard.

The above is only a preferred embodiment of the present utility model, and does not therefore limit the scope of protection of the present utility model. All equivalent structural transformations made by using the utility model specification and accompanying drawings are directly or indirectly used in other related technologies. fields, are all included in the patent scope of the utility model in the same way.

Claims (3)

1. A water and oil repellent wool knitted fabric, which is woven into a base fabric (1) from warp and weft fibers, characterized in that: the base fabric (1) is coated with a layer of ultraviolet radiation coating (2), The surface of the ultraviolet radiation coating film (2) is provided with a hydrophobic and oil-repellent layer (3). 2. The water- and oil-repellent wool knitted fabric according to claim 1, characterized in that: the hydrophobic and oil-repellent layer (3) has a network structure. 3. The water and oil repellent wool knitted fabric according to claim 1, characterized in that: the warp fibers and the weft fibers are formed by plying wool fibers and metal fibers.

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