CN108004764B - Water-repellent finishing liquid, local water-repellent fabric and preparation method - Google Patents

Water-repellent finishing liquid, local water-repellent fabric and preparation method Download PDF

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CN108004764B
CN108004764B CN201711115486.3A CN201711115486A CN108004764B CN 108004764 B CN108004764 B CN 108004764B CN 201711115486 A CN201711115486 A CN 201711115486A CN 108004764 B CN108004764 B CN 108004764B
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water
repellent
sample
fabric
agent
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CN108004764A (en
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赵祥
陈喆
谭卫东
贾耀芳
杨晓伟
王中荣
唐模秋
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Xinlong Holdings Group Co ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
    • 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
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
    • 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
    • D06N3/0061—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
    • 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
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
    • 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
    • D06N3/04—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 by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/042—Acrylic polymers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/10—Repellency against liquids
    • D06M2200/12—Hydrophobic properties

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  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The invention discloses a water-repellent finishing liquid for water repellency of a non-woven layout part, which comprises the following components in percentage by mass: 0.5-5% of water repellent agent; 80-95% of water; 3-5% of a thickening agent; 0.01-0.5% of ammonia water; wherein the mass percentage concentration of the ammonia water is 15-20%. The invention provides a water repellent finishing liquid, which changes the use method of the water repellent finishing liquid by preparing a water repellent agent from low viscosity to high viscosity (the viscosity is more than or equal to 2000 mpa.s).

Description

Water-repellent finishing liquid, local water-repellent fabric and preparation method
Technical Field
The invention belongs to the field of non-woven materials, and particularly relates to a water-repellent finishing liquid, a local water-repellent fabric and a preparation method thereof.
Background
The existing water repellent finishing is that the whole product is subjected to water repellent treatment, such as water repellent treatment of protective clothing, umbrellas and the like.
General process flow of water repellent finishing non-woven fabric: nonwoven → impregnation (water repellent finish liquid) → drying → winding → inspection.
The water repellent non-woven fabric is mainly characterized in that:
a water repellent cloth; the product has the lotus leaf effect, water is sprayed on cloth surface and is scattered and lost in a water drop state, the cloth surface cannot be soaked, the application range of the product is wide, and the product is widely applied to industries such as medical protection, leather, clothing and the like.
The current production situation of the water-repellent non-woven fabric is as follows: water repellent finishing is a bionic effect, and at present, the water repellent finishing has the functions of water repellency, pollution prevention, self-cleaning, three-resistance (water resistance, alcohol resistance, blood resistance) and the like developed on the basis of the lotus leaf effect bionic principle.
The nonwoven fabrics subjected to water repellent finishing at present mainly comprise spunlace nonwoven fabrics, spun-bonded nonwoven fabrics, SMS nonwoven fabrics and the like, products mainly take the fields of medical protection and sanitary care (sanitary towels and paper diapers) as main materials, the water repellency of the products is mainly subjected to water repellent finishing in a dipping or spraying mode, and the whole fabric has water repellency. At present, most of water repellent finishing non-woven fabrics are disposable, and have no requirement on multiple durability of products.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: there is no disclosure in the prior art of a product or process having a partial water repellency treatment. The local water-repellent non-woven fabric can overcome the defect that the surface of the existing non-woven material, particularly the spunlace non-woven fabric, is not dry when being wetted completely by liquid when being used as a surface material of a sanitary towel.
In order to solve the technical problems, the invention provides a water-repellent finishing liquid, a local water-repellent fabric and a preparation method thereof.
The water-repellent finishing liquid for water repellency of the non-woven layout part comprises the following components in percentage by mass in the water-repellent finishing liquid:
0.5-5% of water repellent agent;
80-95% of water;
3-5% of a thickening agent;
0.01-0.5% of ammonia water;
wherein the mass percentage concentration of the ammonia water is 15-20%.
As a preferable technical scheme, the antistatic agent also comprises an antistatic agent and a penetrating agent.
As a preferable technical scheme, the mass percentages of the antistatic agent and the penetrating agent in the water repellent finishing liquid for water repellency of the non-woven layout part are as follows:
0.1-0.5% of antistatic agent;
and 0.1-3% of penetrating agent JFC.
According to a preferable technical scheme, the water repellent is one or a combination of a fluorine-containing water repellent, a silicon water repellent and a paraffin water repellent.
As a preferred technical scheme, the water repellent agent is a fluoride water repellent agent FC 3410; the thickener is the thickener PTF.
The invention also provides a preparation method of the water-repellent finishing liquid for water repellency of the non-woven layout part, which comprises the following steps: mixing the above materials.
The invention also provides a method for preparing a local water-repellent fabric by using the water-repellent finishing liquid for water repellency of the non-woven layout part, which comprises the following steps:
and (3) coating the water-repellent finishing liquid for water repellency of the non-woven layout part on the surface of the fabric to form a local water-repellent coating, drying, reeling and slitting.
As a preferred technical scheme, the drying temperature is 110-170 ℃; the fabric is non-woven fabric.
The invention also provides the local water-repellent fabric prepared by the method, wherein a local water-repellent coating is formed on one surface of the fabric.
Preferably, the partial water-repellent coating comprises a plurality of discontinuous partial water-repellent patterns so as to form a plurality of water-repellent regions and non-water-repellent regions on one side of the partial water-repellent non-woven fabric.
The invention can achieve the following technical effects:
1. the invention provides a water repellent finishing liquid, which changes the use method of the water repellent finishing liquid by preparing a water repellent agent from low viscosity to high viscosity (the viscosity is more than or equal to 2000 mpa.s); the traditional non-woven fabric water repellent finishing liquid is diluted by a water repellent agent and then is matched with other auxiliary agents for use, and the application method of thickening after dilution is adopted. According to the traditional water repellent agent preparation method, after a coating or printing process is carried out in a roller or cylinder mode, the water repellent agent can be diffused on the surface of the liquid-absorbing fabric in a large area, the obtained surface layer still is completely water repellent, and the effect of partial water repellency cannot be achieved. The water repellent finishing liquid is coated on the fabric in a roller or cylinder mode through a coating or printing process, so that diffusion is avoided, and accurate local water repellent treatment can be formed.
2. The invention provides a local water-repellent fabric, which greatly improves the product performance and overcomes the defects of the existing product. After the local water repellent finishing, the original cloth cover is wholly hydrophilic, and the effect that one side is locally hydrophilic, the local water repellent and the other side is hydrophilic is changed. When the fabric is used as fabrics of sanitary towels, paper diapers and the like, the dryness and comfort of the fabric are improved.
3. The local water repellency means that the local water repellency of one fabric is locally water repellency, and the local hydrophilicity is maintained, so that when the local water repellency material meets liquid, the local water repellency area keeps the dryness of the fabric surface. The local water-repellent non-woven fabric is a functional non-woven fabric. The partial water repellency is a novel functional finishing technology of the non-woven fabric. After the non-woven fabric is subjected to local water repellent finishing, when the non-woven fabric or the fabric meets liquid, the liquid such as water, urine, blood and the like in a local water repellent area is difficult to wet, and the liquid can be quickly guided away in an area without water repellency, so that the characteristic of drier and more comfortable fabric surface is achieved. The main application of the local water-repellent non-woven fabric is as follows: (1) sanitary care; (2) medical protection; (3) household decoration; (4) and (3) filtering the material.
Drawings
Fig. 1 is a schematic structural diagram of the local water-repellent fabric of the present invention.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
When the water-repellent finishing liquid for water repellency of the non-woven layout part is used for fabrics with good hydrophilicity, the water-repellent finishing liquid comprises the following components in percentage by mass:
0.5-5% of water repellent agent;
80-95% of water;
3-5% of a thickening agent;
0.01-0.5% of ammonia water;
the invention changes the use method of the water repellent finishing liquid by preparing the water repellent from low viscosity to high viscosity (the viscosity is more than or equal to 2000 mpa.s); the traditional non-woven fabric water repellent finishing liquid is diluted by a water repellent agent and then is matched with other auxiliary agents for use.
When the water repellent finishing liquid is used for fabrics which are poor in hydrophilicity and easy to generate static electricity, the water repellent finishing liquid for partial water repellency can also comprise 0.1-0.3% of antistatic agent and 0.5-3% of penetrating agent.
The invention obtains the characteristics of local water repellency and local hydrophilicity of the cloth cover by carrying out local water repellency finishing on non-woven fabrics such as spunlace fabrics, spunbonded fabrics, SMS and the like.
The object of the invention is achieved by the following steps:
(1) preparing water repellent finishing liquid, and adjusting proper viscosity (the viscosity is more than or equal to 2000);
(2) coating the water repellent finishing liquid on the cloth surface of non-woven fabrics such as spunlace fabrics and SMS in the modes of roller coating, cylinder coating and the like; the engraving form of the coating roller and the rotary screen determines the pattern effect of local water repellency.
(3) Drying the coated cloth by an oven, and cutting and packaging according to market requirements;
process for the preparation of a coating
Non-woven fabric → local water repellent finish → drying → coiling → inspection → cutting package
1) The non-woven fabric is various non-woven fabrics such as spunlace, hot rolling, spun bonding, SMS and the like.
2) And the parameters of the local water repellent coating finishing process are as follows: the drying temperature of the local water repellent finishing is 110-170 ℃;
3) and water repellent finishing liquid: the local water repellent finishing liquid is a mixture of water repellent agents such as fluoride, silicon and the like,
4) and a key process of local water repellent finishing: the local liquid coating finishing mode is carried out on the cloth surface by roller coating, cylinder coating and the like, and the local water repellent effect is determined by the pattern of the roller and the pattern effect of the cylinder (the roller can be in various regular or irregular patterns such as wavy lines, round points, rhombus and the like, and the cylinder can also be in various patterns).
Referring to fig. 1, a local water-repellent non-woven fabric 1 provided by the present invention has a local water-repellent coat formed on one surface thereof. The partial water-repellent coating comprises a plurality of discontinuous partial water-repellent patterns (the water-repellent patterns can be any regular or irregular patterns) so as to form a plurality of water-repellent regions 2 and non-water-repellent regions 3 on one side of the partial water-repellent non-woven fabric. The non-woven fabric with the local water repellent surface 4 and the hydrophilic back layer 5 achieves the local water repellent effect through the treatment of the local water repellent process, meanwhile, the local water repellent surface 4 (the surface contacting with the skin) has local water repellent performance, and the back layer 5 still keeps good water absorption and water conductivity. When the fabric is used as a surface layer material of sanitary towels and paper diapers, the fabric part contacting with the skin keeps better dryness and smoothness, and meanwhile, the back surface of the fabric has better water conductivity, and the comfort is greatly improved compared with the existing material.
The invention is further illustrated by the following specific examples:
example 1: production of 30g/m2Local water repellent spunlace fabric made of pure cotton
Pure cotton fiber → carding → hydro-entangling → partial water repellent finishing → drying → coiling → inspection and slitting.
The water repellent finishing liquid is prepared by mixing a fluoride water repellent agent, a thickening agent and water.
The pure cotton spunlace fabric can be directly laid spunlace fabric, cross spunlace fabric, dry fabric or wet fabric; the test was cross-lapped 35g of dry cotton cloth.
The weight percentage of the additive is respectively
Fluoride water repellent FC3410 (Guangzhou Huayu chemical Co., Ltd.) 3%;
93.9 percent of water;
thickener PTF (hensman chemical) 3%;
0.1% ammonia water with a concentration of 18.58 wt%.
The viscosity of the water-repellent finishing liquid of this example was 2100mpa.s by viscosity measurement.
The mixture is added into a proportioning tank in the sequence of water → fluoride → thickening agent → ammonia water while stirring, and the mixture is prepared to proper viscosity. The water repellent finishing liquid is placed into a roller coating liquid tank after being prepared, the water repellent finishing liquid is locally transferred to the cloth surface through a roller during production, and the water repellent area of the cloth surface is about 50% of the total cloth surface.
And (3) drying the cotton fabric by controlling the liquid carrying rate of the local water-repellent finishing process to be 50-170%, controlling the drying temperature to be 140-170 ℃ and the drying time to be 5-150 seconds, and finishing the processing of the pure cotton local water-repellent spunlace fabric after drying.
The test detection method comprises the following steps:
with reference to GBT 30133-2013 general technical Specification for sanitary towel facing layer, selecting 30g/m2The local water-repellent pure cotton spunlace fabric and the traditional pure cotton spunlace fabric are respectively 5 pieces with the size of 8.5cm multiplied by 20 mm; and (3) testing the indexes of the infiltration amount and the rewet amount, wherein the higher the infiltration amount is, the smaller the rewet amount is, and the better the dryness and comfort of the material are.
(1) The infiltration amount testing method comprises the following steps:
the test is carried out according to GBT 30133-2013 general technical Specification for sanitary towel surface layers.
(2) The water seepage time testing method comprises the following steps:
the time is counted from when the liquid starts to contact the surface layer to when the liquid is completely absorbed (no water stain is seen by the surface layer).
(3) The method for testing the rewet capacity comprises the following steps:
firstly, 5 pieces of traditional pure cotton spunlace cloth and local water-repellent pure cotton spunlace cloth of 10cm multiplied by 10cm are prepared, the local water-repellent surface of the local water-repellent spunlace cloth faces upwards, the initial weight M1 of the sample is weighed, and 10 pieces of surface absorption filter paper are prepared, and the initial weight G1 is weighed.
placing 10 layers of water-absorbing filter paper below a sample, measuring 10ml of artificial blood by using a pipette, placing the artificial blood into a test tube, enabling the artificial blood to freely flow to the surface of the sample at a position 5-10mm above the central point of the sample, starting timing, covering a layer of water-absorbing filter paper on the sample after 1 minute and 5 minutes respectively, placing a standard pressing block above the covered water-absorbing filter paper, starting timing again, removing the pressing block after 1 minute of pressurization, weighing the weight G2 covered with the filter paper, and weighing the water-repellent pure cotton spunlace fabric M2 with a surface layer;
③ calculating the rewet amount G = G2-G1/G1
(II) detection results:
the infiltration amount is unit g
Sample name Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent pure cotton 3.05 3.87 4.04 2.93 3.78 3.534
Common pure cotton 2.54 2.78 2.89 3.15 4.24 3.12
According to the analysis of the infiltration amount result, the infiltration amount of the local water-repellent pure cotton spunlaced fabric is improved by 13 percent, and the infiltration performance is better than that of the traditional pure cotton spunlaced fabric product; the water repellent part of the local water repellent pure cotton spunlace cloth has low self-absorptivity, more liquid is led into the lower absorption layer, and the traditional pure cotton spunlace cloth has good self-absorptivity and reduced lead-in amount.
penetration time in seconds
Sample name Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent pure cotton 1.1 1.3 1.2 1.2 1.3 1.25
Common pure cotton 1.1 1.0 1.1 1.2 1.3 1.15
Compared with the infiltration time, the infiltration time of the local water-repellent pure cotton spunlace fabric is very close to that of the traditional pure cotton spunlace.
(iii) Return Permeability in unit g
1 minute test result
Sample (I) Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent pure cotton 0.05 0.04 0.06 0.05 0.07 0.054
Traditional pure cotton 0.56 0.59 0.65 0.59 0.60 0.598
5 minutes test result
Sample (I) Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent pure cotton 0.07 0.08 0.05 0.07 0.07 0.068
Common pure cotton 0.11 0.13 0.09 0.1 0.09 0.104
From the analysis of the detection result of the back-seepage amount, the back-seepage amount of the traditional pure cotton is close to 10 times of that of the local water-repellent pure cotton when the test is carried out after 1 minute; from the 5 minute results, conventional pure cotton is close to 2 times the partial water repellency. The effect of preventing the back seepage of the local water repellent pure cotton spunlace material is greatly better than that of the traditional pure cotton spunlace material: on one hand, the partial water repellency treatment is used for preventing liquid from back permeation, on the other hand, after the surface is subjected to partial water repellency, the water absorbability of a water repellent part is reduced, the capillary effect is reduced, the water diffusivity after third absorption is better, and the moisture conductivity is improved.
Example 2: production of 15g/m2The partially water repellent SS spunbond nonwoven was compared to the conventional hydrophilic SS.
Unwinding SS spun-bonded non-woven fabric → local water repellent finishing → drying → coiling → inspection and slitting.
The water repellent finishing liquid is prepared by mixing a fluoride water repellent agent, a thickening agent, a hydrophilic agent and water.
The weight percentage of the additive is respectively
Fluoride water repellent agent E600 (japan asahi glass chemical) 1.5%;
93.4 percent of water;
0.2% of antistatic agent TY (American Spam chemical industry);
penetrant JFC (guangzhou xinhuahong chemical industry) 1.5%;
3.5% of a thickening agent PTF;
0.2 percent of ammonia water with the concentration of 18.58 percent;
the viscosity of the water-repellent finishing liquid of this example was 2800mpa.s by viscosity measurement.
The water → the fluoride → the antistatic agent → the penetrating agent → the thickening agent → the ammonia water are added in the mixing tank in the sequence of the fluoride, the antistatic agent and the penetrating agent (the adding sequence of the fluoride, the penetrating agent does not influence), and the mixture is stirred and added in sequence to be prepared to proper viscosity. After the water repellent finishing liquid is prepared, the water repellent finishing liquid is placed into a roller coating liquid tank, and the water repellent finishing liquid is locally transferred to the cloth surface through a roller during production.
And (3) drying the local water-repellent finishing process at the drying temperature of 110-130 ℃ for 5-150 seconds by controlling the liquid carrying rate to be 50-170%, and finishing the processing of the local water-repellent SS spunbonded non-woven fabric after drying.
And (3) detection results:
the infiltration amount is unit g
Sample name Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Partial water rejection SS 3.55 3.67 3.84 3.93 4.18 3.834
Plain hydrophilic SS 3.54 3.69 3.82 3.75 4.06 3.772
From the penetration results analysis, the local water repellent SMS penetration was very close to that of the common hydrophilic SMS products.
penetration time in seconds
Sample name Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Partial water rejection SS 1.5 1.5 1.6 1.6 1.5 1.54
Plain hydrophilic SS 1.6 1.6 1.5 1.6 1.5 1.56
From the comparison of the penetration times, the local water repellent SMS penetration was very close to that of the common hydrophilic SMS products.
(iii) Return Permeability in unit g
1 minute test result
Sample name Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Partial water rejection SS 0.01 0.01 0.00 0.01 0.00 0.01
Plain hydrophilic SS 0.03 0.04 0.02 0.02 0.03 0.03
5 minutes test result
Sample (I) Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Partial water rejection SS 0.00 0.01 0.00 0.01 0.01 0.01
Plain hydrophilic SS 0.01 0.02 0.02 0.02 0.02 0.02
From the analysis of the detection result of the back-seepage amount, the local water-repellent SS seepage amount and the seepage time are close to those of the common hydrophilic SS index, the back-seepage index 1 minute test value is improved by more than 3 times compared with the common hydrophilic SS, the 5 minute test value is improved by 1 time, the permeability is not influenced, and the dryness is greatly improved.
Example 3: production of 30g/m2Local water repellent spunlace fabric made of pure cotton
Pure cotton fiber → carding → hydro-entangling → partial water repellent finishing → drying → coiling → inspection and slitting.
The water repellent finishing liquid is prepared by mixing a fluoride water repellent agent, a thickening agent and water.
The pure cotton spunlace fabric can be directly laid spunlace fabric, cross spunlace fabric, dry fabric or wet fabric; this test was carried out using 35g of a wet cloth of a straight-laid cotton spunlace cloth.
The weight percentage of the additive is respectively
Fluoride water repellent FC3410 (Guangzhou Huayu chemical Co., Ltd.) 1.5%;
94.2 percent of water;
thickener PTF (hensman chemical) 4.0%;
0.3% of ammonia water with the concentration of 18.58%.
The viscosity of the water-repellent finishing liquid of this example was 2600mpa.s by viscosity measurement.
The mixture is added into a proportioning tank in the sequence of water → fluoride → thickening agent → ammonia water while stirring, and the mixture is prepared to proper viscosity. The water repellent finishing liquid is placed into a roller coating liquid tank after being prepared, the water repellent finishing liquid is locally transferred to the cloth surface through a roller during production, and the water repellent area after finishing is about 55%.
And (3) drying the cotton fabric by controlling the liquid carrying rate of the local water-repellent finishing process to be 50-170%, controlling the drying temperature to be 140-170 ℃ and the drying time to be 5-150 seconds, and finishing the processing of the pure cotton local water-repellent spunlace fabric after drying.
The test detection method comprises the following steps:
with reference to GBT 30133-2013 general technical Specification for sanitary towel surface layers, selecting 5 pieces of 30g/m2 local water-repellent pure cotton spunlace cloth and 5 pieces of traditional pure cotton spunlace cloth with the sizes of 8.5cm multiplied by 20 mm; and (3) testing the indexes of the infiltration amount and the rewet amount, wherein the higher the infiltration amount is, the smaller the rewet amount is, and the better the dryness and comfort of the material are.
(1) The infiltration amount testing method comprises the following steps:
the test is carried out according to GBT 30133-2013 general technical Specification for sanitary towel surface layers.
(2) The water seepage time testing method comprises the following steps:
the time is counted from when the liquid starts to contact the surface layer to when the liquid is completely absorbed (no water stain is seen by the surface layer).
(3) The method for testing the rewet capacity comprises the following steps:
firstly, 5 pieces of traditional pure cotton spunlace cloth and local water-repellent pure cotton spunlace cloth of 10cm multiplied by 10cm are prepared, the local water-repellent surface of the local water-repellent spunlace cloth faces upwards, the initial weight M1 of the sample is weighed, and 10 pieces of surface absorption filter paper are prepared, and the initial weight G1 is weighed.
placing 10 layers of water-absorbing filter paper below a sample, measuring 10ml of artificial blood by using a pipette, placing the artificial blood into a test tube, enabling the artificial blood to freely flow to the surface of the sample at a position 5-10mm above the central point of the sample, starting timing, covering a layer of water-absorbing filter paper on the sample after 1 minute and 5 minutes respectively, placing a standard pressing block above the covered water-absorbing filter paper, starting timing again, removing the pressing block after 1 minute of pressurization, weighing the weight G2 covered with the filter paper, and weighing the water-repellent pure cotton spunlace fabric M2 with a surface layer;
③ calculating the rewet amount G = G2-G1/G1
(II) detection results:
the infiltration amount is unit g
Sample name Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent direct-spread pure cotton 3.1 3.73 3.28 3.35 3.78 3.448
Common pure cotton 2.54 2.78 2.89 3.15 4.24 3.12
According to the result analysis of the infiltration capacity, the infiltration capacity of the local water-repellent pure cotton spunlaced fabric is improved by 10.5 percent, and the infiltration capacity is better than that of the traditional pure cotton spunlaced fabric product.
penetration time in seconds
Sample name Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent direct-spread pure cotton 1.3 1.2 1.5 1.4 1.5 1.38
Common pure cotton 1.1 1.0 1.1 1.2 1.3 1.15
Compared with the infiltration time, the infiltration time of the partial water-repellent pure cotton spunlace fabric is very close to that of the traditional pure cotton spunlace.
(iii) Return Permeability in unit g
1 minute test result
Sample (I) Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent direct-spread pure cotton 0.05 0.03 0.07 0.04 0.06 0.050
Traditional pure cotton 0.56 0.59 0.65 0.59 0.60 0.598
5 minutes test result
Sample (I) Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent direct-spread pure cotton 0.08 0.06 0.04 0.05 0.06 0.058
Common pure cotton 0.11 0.13 0.09 0.1 0.09 0.104
From the analysis of the detection result of the back-seepage amount, the back-seepage amount of the traditional pure cotton is close to 10 times of that of the local water-repellent pure cotton when the test is carried out after 1 minute; from the 5 minute results, conventional pure cotton is close to 2 times the partial water repellency.
Example 4: production 32g/m2Bamboo fiber direct-laying spunlace fabric with partial water repellency of 100%
Bamboo fiber → carding → hydro-entangling → partial water repellent finishing → drying → coiling → inspection and slitting.
The water repellent finishing liquid is prepared by mixing a fluoride water repellent agent, a thickening agent and water.
The pure cotton spunlace fabric can be directly laid spunlace fabric, cross spunlace fabric, dry fabric or wet fabric;
the experiment was carried out using a 100% spunlaced wet cloth of bamboo fibres laid straight.
The weight percentage of the additive is respectively
20% fluoride water repellent FC3410 (Guangzhou Huayu chemical Co., Ltd.) 4.5%;
91.85% of water;
thickener PTF (hensman chemical) 3.5%;
0.15% of ammonia water with the concentration of 18.58%.
The viscosity of the water-repellent finishing liquid of this example was 2100mpa.s by viscosity measurement.
The mixture is added into a proportioning tank in the sequence of water → fluoride → thickening agent → ammonia water while stirring, and the mixture is prepared to proper viscosity. The water repellent finishing liquid is placed into a roller coating liquid tank after being prepared, the water repellent finishing liquid is locally transferred to the cloth surface through a roller during production, and the water repellent area is about 60 percent after finishing.
And (3) drying the cotton fabric by controlling the liquid carrying rate of the local water-repellent finishing process to be 50-170%, controlling the drying temperature to be 140-170 ℃ and the drying time to be 5-150 seconds, and finishing the processing of the pure cotton local water-repellent spunlace fabric after drying.
The test detection method comprises the following steps:
with reference to GBT 30133-2013 general technical Specification for sanitary towel surface layers, selecting 5 pieces of 30g/m2 local water-repellent pure cotton spunlace cloth and 5 pieces of traditional pure cotton spunlace cloth with the sizes of 8.5cm multiplied by 20 mm; and (3) testing the indexes of the infiltration amount and the rewet amount, wherein the higher the infiltration amount is, the smaller the rewet amount is, and the better the dryness and comfort of the material are.
(1) The infiltration amount testing method comprises the following steps:
the test is carried out according to GBT 30133-2013 general technical Specification for sanitary towel surface layers.
(2) The water seepage time testing method comprises the following steps:
the time is counted from when the liquid starts to contact the surface layer to when the liquid is completely absorbed (no water stain is seen by the surface layer).
(3) The method for testing the rewet capacity comprises the following steps:
firstly, 5 pieces of traditional pure cotton spunlace cloth and local water-repellent pure cotton spunlace cloth of 10cm multiplied by 10cm are prepared, the local water-repellent surface of the local water-repellent spunlace cloth faces upwards, the initial weight M1 of the sample is weighed, and 10 pieces of surface absorption filter paper are prepared, and the initial weight G1 is weighed.
placing 10 layers of water-absorbing filter paper below a sample, measuring 10ml of artificial blood by using a pipette, placing the artificial blood into a test tube, enabling the artificial blood to freely flow to the surface of the sample at a position 5-10mm above the central point of the sample, starting timing, covering a layer of water-absorbing filter paper on the sample after 1 minute and 5 minutes respectively, placing a standard pressing block above the covered water-absorbing filter paper, starting timing again, removing the pressing block after 1 minute of pressurization, weighing the weight G2 covered with the filter paper, and weighing the water-repellent pure cotton spunlace fabric M2 with a surface layer;
③ calculating the rewet amount G = G2-G1/G1
(II) detection results:
the infiltration amount is unit g
Sample (I)Name (R) Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent bamboo fiber spunlace fabric 4.10 3.73 3.82 3.65 3.70 3.8
Common pure cotton 2.54 2.78 2.89 3.15 4.24 3.12
According to the result analysis of the infiltration capacity, the infiltration capacity of the local water-repellent pure cotton spunlaced fabric is improved by 21.79 percent, and the infiltration capacity of the local water-repellent pure cotton spunlaced fabric is better than that of the traditional pure cotton spunlaced fabric product.
penetration time in seconds
Sample name Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent bamboo fiber spunlace fabric 1.2 1.8 1.8 1.5 2.1 1.68
Common pure cotton 1.1 1.0 1.1 1.2 1.3 1.15
Compared with the penetration time, the penetration time of the bamboo fiber spunlace fabric which is locally water-repellent and 100 percent water-repellent is very close to that of the traditional pure cotton spunlace fabric.
(iii) Return Permeability in unit g
1 minute test result
Sample (I) Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent bamboo fiber spunlace fabric 0.12 0.08 0.09 0.07 0.12 0.096
Traditional pure cotton 0.56 0.59 0.65 0.59 0.60 0.598
5 minutes test result
Sample (I) Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent bamboo fiber spunlace fabric 0.10 0.08 0.06 0.05 0.06 0.07
Common pure cotton 0.11 0.13 0.09 0.1 0.09 0.104
According to the analysis of the detection result of the back-seepage amount, the back-seepage amount of the traditional pure cotton is 5 times that of the local water-repellent pure cotton when the local water-repellent bamboo fiber spunlace fabric is tested after 1 minute; from the result of 5 minutes, the effect of the local water repellent bamboo fiber spunlace fabric is superior to that of the common pure cotton.
Example 5: production of 13g/m2The partially water repellent SS spunbond nonwoven was compared to the conventional hydrophilic SS.
Unwinding SS spun-bonded non-woven fabric → local water repellent finishing → drying → coiling → inspection and slitting.
The water repellent finishing liquid is prepared by mixing a fluoride water repellent agent, a thickening agent, a hydrophilic agent and water.
The weight percentage of the additive is respectively
Fluoride water repellent agent E6001.2%;
91.0 percent of water;
0.5 percent of antistatic agent TY;
3.2% of penetrant JFC;
3.5% of a thickening agent PTF;
0.6 percent of ammonia water;
the viscosity of the water-repellent finishing liquid of the present example was 2550 mpa.s by viscosity measurement.
The water → the fluoride → the antistatic agent → the penetrating agent → the thickening agent → the ammonia water are added in the mixing tank in sequence with stirring, and the mixture is prepared to the proper viscosity. After the water repellent finishing liquid is prepared, the water repellent finishing liquid is placed into a roller coating liquid tank, and the water repellent finishing liquid is locally transferred to the cloth surface through a roller during production. The water repellent area after finishing is about 55 percent.
And (3) drying the cotton fabric by controlling the liquid carrying rate of the local water-repellent finishing process to be 50-170%, controlling the drying temperature to be 110-130 ℃ and the drying time to be 5-150 seconds, and finishing the processing of the pure cotton local water-repellent spunlace fabric after drying.
And (3) detection results:
the infiltration amount is unit g
Sample name Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Partial water rejection SS 3.78 3.67 4.17 4.23 4.18 4.006
Plain hydrophilic SS 3.54 3.69 3.82 3.75 4.06 3.772
From the penetration results analysis, the local water repellent SMS penetration was very close to that of the common hydrophilic SMS products.
penetration time in seconds
Sample name Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Partial water rejection SS 1.6 1.7 1.7 1.6 1.6 1.64
Plain hydrophilic SS 1.6 1.6 1.5 1.6 1.5 1.56
From the comparison of the penetration times, the local water repellent SMS penetration was very close to that of the common hydrophilic SMS products.
(iii) Return Permeability in unit g
1 minute test result
Sample name Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Partial water rejection SS 0.01 0.01 0.02 0.01 0.00 0.01
Plain hydrophilic SS 0.03 0.04 0.02 0.02 0.03 0.03
5 minutes test result
Sample (I) Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Partial water rejection SS 0.00 0.01 0.02 0.01 0.01 0.01
Plain hydrophilic SS 0.01 0.02 0.02 0.02 0.02 0.02
From the analysis of the detection result of the back-seepage amount, the local water-repellent SS seepage amount and the seepage time are close to those of the common hydrophilic SS index, the back-seepage index 1 minute test value is improved by more than 3 times compared with the common hydrophilic SS, the 5 minute test value is improved by 1 time, the permeability is not influenced, and the dryness is obviously improved.
Comparative example: production of 30g/m2Local water repellent spunlace fabric made of pure cotton
Pure cotton fiber → carding → hydro-entangling → partial water repellent finishing → drying → coiling → inspection and slitting.
The water repellent finishing liquid is prepared by mixing a fluoride water repellent agent, a thickening agent and water.
The pure cotton spunlace fabric can be directly laid spunlace fabric, cross spunlace fabric, dry fabric or wet fabric.
The weight percentage of the additive is respectively
Fluoride water repellent FC 34105%;
93.5 percent of water;
thickener PTF 0.5%;
1% of ammonia water with a concentration of 18% by weight.
The viscosity of the water-repellent finishing liquid of the embodiment is 1450mpa.s by viscosity detection
The mixture is added into a proportioning tank in the sequence of water → fluoride → thickening agent → ammonia water while stirring, and the mixture is prepared to proper viscosity. After the water repellent finishing liquid is prepared, the water repellent finishing liquid is placed into a roller coating liquid tank, and the water repellent finishing liquid is locally transferred to the cloth surface through a roller during production.
And (3) drying the cotton fabric by controlling the liquid carrying rate of the local water-repellent finishing process to be 50-170%, controlling the drying temperature to be 140-170 ℃ and the drying time to be 5-150 seconds, and finishing the processing of the pure cotton local water-repellent spunlace fabric after drying.
And (3) detection results:
the infiltration amount is unit g
Sample name Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent pure cotton 2.05 2.23 2.24 1.27 2.08 1.974
Common pure cotton 2.54 2.78 2.89 3.15 4.24 3.12
According to the result analysis of the infiltration amount, the infiltration amount of the local water-repellent pure cotton spunlace fabric is reduced by 36.7%, the infiltration performance is poor, mainly the local water-repellent area is increased, the liquid absorptivity is reduced, and the water-repellent area is more than 80%.
penetration time in seconds
Sample name Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Average
Local water-repellent pure cotton 2.3 2.2 1.6 3.2 2.3 2.32
Common pure cotton 1.1 1.0 1.1 1.2 1.3 1.15
Compared with the infiltration time, the infiltration time of the local water-repellent pure cotton spunlace fabric is reduced by more than one time, and the local water-repellent area is increased after the viscosity is reduced, so that the water absorption time is influenced.
(iii) Return Permeability in unit g
The test effect of the infiltration amount and the infiltration time is poor, the liquid can not well leak, the surface has the phenomenon of sliding and infiltration, and the test requirement of the test 3 is not met.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims (10)

1. A water-repellent finishing liquid for water repellency of a non-woven layout part is characterized by comprising the following components in percentage by mass:
0.5-5% of water repellent agent;
80-95% of water;
3-5% of a thickening agent;
0.01-0.5% of ammonia water;
wherein the mass percentage concentration of the ammonia water is 15-20%.
2. The water-repellent finish for water repellency of a nonwoven layout section according to claim 1, characterized by further comprising an antistatic agent and a penetrant.
3. The water-repellent finishing liquid for water repellency of a nonwoven layout section according to claim 1, characterized in that an antistatic agent and a penetrant account for the mass percentage of the water-repellent finishing liquid:
0.1-0.5% of antistatic agent;
and 0.1-3% of penetrating agent JFC.
4. The water-repellent finish liquid for water repellency of a nonwoven fabric layout section according to claim 1 or 2, characterized in that the water-repellent agent is one or a combination of a fluorine-containing water-repellent agent, a silicon-based water-repellent agent, or a paraffin-based water-repellent agent.
5. The water-repellent finish liquid for water repellency of a nonwoven layout section according to claim 1, characterized in that the water-repellent agent is a fluoride water-repellent agent FC 3410; the thickener is the thickener PTF.
6. A method for producing a water-repellent finish liquid for water repellency of a nonwoven layout section according to any one of claims 1 to 4, characterized by comprising the steps of: mixing the above materials.
7. The method for preparing the local water-repellent fabric by using the water-repellent finishing liquid for water repellency of the non-woven layout part, which is described in any one of claims 1 to 6, is characterized by comprising the following steps:
and (3) coating the water-repellent finishing liquid on the surface of the fabric to form a local water-repellent coating, drying, reeling and slitting.
8. The method for preparing the local water-repellent fabric by using the water-repellent finishing liquid for water repellency of the non-woven layout part according to claim 7, characterized in that the drying temperature is 110-170 ℃; the fabric is non-woven fabric.
9. The partially water repellent facing produced by the process of claim 7 or 8, wherein one side of the facing is provided with a partially water repellent coating.
10. The partially water-repellent fabric according to claim 9, wherein the partially water-repellent coat comprises a plurality of discontinuous partially water-repellent patterns so as to form a plurality of water-repellent regions and non-water-repellent regions on one side of the partially water-repellent nonwoven fabric.
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