CN115094637A - Three-proofing finishing process for pure cotton fabric - Google Patents
Three-proofing finishing process for pure cotton fabric Download PDFInfo
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- CN115094637A CN115094637A CN202210879327.5A CN202210879327A CN115094637A CN 115094637 A CN115094637 A CN 115094637A CN 202210879327 A CN202210879327 A CN 202210879327A CN 115094637 A CN115094637 A CN 115094637A
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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
- 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
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
- D06M15/568—Reaction products of isocyanates with polyethers
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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
- 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
- D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
- D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
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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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- 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
- D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
- D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
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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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- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/01—Stain or soil resistance
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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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- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/11—Oleophobic properties
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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
- 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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- 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
- D06M2200/50—Modified hand or grip properties; Softening compositions
Abstract
The invention provides a three-proofing finishing process of a pure cotton fabric, which mainly comprises the following process flows of: hair drying → mercerizing → drying → hair etching → dyeing → drying → sizing (three-proofing finishing) → preshrinking → rolling. The shaping process comprises the following steps: (1) placing a pure cotton fabric on a setting machine (bath ratio is 1: 20, finishing liquor is an organic silicon smoothing agent) → soaking and rolling (liquor rolling rate is 65-75%) → drying → setting → finished product; (2) and (2) placing the purified cotton fabric treated in the step (1) on a setting machine again (the bath ratio is 1: 20, the finishing liquid is a three-proofing finishing agent and a cross-linking agent) → one-dipping one-rolling (the mangle rolling ratio is 65-75%) → drying → setting → a finished product, so as to obtain the three-proofing purified cotton fabric. The finished cotton fabric has excellent water-proof, oil-proof and dirt-proof performances, good washing resistance, soft and smooth hand feeling and good market value.
Description
Technical Field
The invention relates to a three-proofing finishing process of a pure cotton fabric, belonging to the technical field of fabric finishing.
Background
With the increasing demand of people on clothes, the concept of clothes consumption is changed greatly, and people need to wear warm clothes and proper clothes. Therefore, the garment should have more properties to meet more requirements. The functional textile product has the functions of keeping warm, covering and beautifying which are beyond the functions of the conventional textile product, and also has other special functions, such as softness and elasticity, moisture absorption and quick drying, static resistance, ultraviolet resistance, flame retardance, antibiosis and deodorization, and the like, wherein the textile product is most popular in three-proofing (waterproof, oil-proofing and antifouling) finishing.
The three-proofing finishing is to form a layer of low-surface-energy high polymer film on the surface of the fabric through physical and chemical actions, endow the fabric with durable water-repellent, oil-repellent and dirt-repellent performances under the condition of not damaging the natural handfeel of the fabric, ensure that liquid stains such as water, oil and the like cannot be wetted and form small balls on the surface of the fabric to roll off, keep the original air permeability of the fabric without closing pores of the fabric, reduce the hydrophilicity of the fabric to the minimum and ensure that the hydrophobicity reaches the optimal state.
The cotton fabric used as the textile fabric with high utilization rate has the advantages of good warmth retention property, soft hand feeling, easy cleaning, wear resistance, washing resistance, good dyeing property and the like, and the clothes made of the cotton fabric, such as T-shirts, casual pants and the like, have good wearing comfort and are deeply loved by consumers. Therefore, the research on the three-proofing finishing of the cotton fabric is of great significance.
At present, the three-proofing finishing agent in the market is mainly used for outdoor equipment such as swimwear and mountaineering wear, and special clothing such as protective clothing, and the application of the three-proofing finishing agent in the common cotton type clothing is difficult to meet the market demand, for example, the requirements of the common cotton type clothing on softness and smoothness of fabrics and washing resistance are difficult to meet.
Disclosure of Invention
The invention aims to overcome the defect that the common pure cotton fabric is poor in softness and washability after being finished by a three-proofing finishing agent, and provides a three-proofing finishing process for the pure cotton fabric, so that the cotton fabric after three-proofing finishing has the advantages of three-proofing effect, smoothness and softness, and improved washability, and the demand of the market on common cotton type clothes is met.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a three-proofing finishing process for pure cotton fabric sequentially comprises the following steps:
s1 pretreatment of pure cotton fabric
Pretreating the pure cotton fabric according to the process of drying wool → mercerizing → drying → etching wool → dyeing → drying,
s2, first sizing and finishing
Placing the pretreated pure cotton fabric on a setting machine according to a bath ratio of 1: 20, performing first-time shaping and finishing by a soaking and rolling (mangling ratio of 65-75%) → 80-100 ℃ drying → 130-;
s3, second sizing and finishing
Placing the pure cotton fabric treated by the S2 on a setting machine again according to the bath ratio of 1: 20, performing primary soaking and rolling (the mangle rolling rate is 65-75%) → 80-100 ℃ drying → 150-;
s4, preshrinking and rolling
And (4) pre-shrinking → rolling the finished pure cotton fabric to obtain the three-proofing pure cotton fabric.
According to the three-proofing finishing process for the pure cotton fabric, the finished cotton fabric is excellent in water resistance, oil resistance and dirt resistance, good in water washing resistance, soft and smooth in hand feeling and good in market value.
Preferably, the organosilicon smoothing agent of S2 is organosilicon modified waterborne polyurethane smoothing agent, and the dosage of the organosilicon modified waterborne polyurethane smoothing agent is 35-45 g/L. The preferred amount is 40 g/L.
Preferably, the vehicle speed for setting in S2 is 35-45m/min, and the temperature is 130-150 ℃. Preferably 40m/min at 140 ℃.
Preferably, the three-proofing finishing agent S3 is one of short-chain C6 fluorine-containing three-proofing finishing agents AG-E081 or AG-E0821, and the dosage of the finishing agent is 55-65 g/L. Preferably AG-E081, is used in an amount of 60 g/L.
Preferably, the crosslinking agent of S3 is one of polyvinyl alcohol type crosslinking agents BP-24 or BP-26, and the dosage of the crosslinking agent is 8-12 g/L. BP-24 is preferred, and is used in an amount of 10 g/L.
Preferably, the method is characterized in that: the speed of the sizing in S3 is 25-35m/min, and the temperature is 150-170 ℃. Preferably 30m/min, 160 ℃.
Preferably, the mangle ratio of one-dip one-roll in S2 and S3 is 65 to 75%.
Preferably, the preparation method of the organosilicon modified waterborne polyurethane smoothing agent comprises the following steps:
(1) mixing (2, 4, 6-trioxotriazine-1, 3, 5(2H, 4H, 6H) -triyl) tri (hexamethylene) isocyanate, 1, 6-hexanediol and polyethylene glycol monomethyl ether in a molar ratio of 2: 1: 1, mixing the mixture at 90 +/-5 ℃ for reacting for 1.5 to 2 hours to synthesize a carbamate prepolymer, adding a sealing agent 3, 5-dimethylpyrazole for reacting for 1 to 2 hours at 70 ℃ to synthesize a sealed isocyanate, wherein the molar ratio of the 3, 5-dimethylpyrazole to the carbamate prepolymer is 3: 1;
(2) adding 200-250 times of water by mass into the blocked isocyanate, stirring at 1500-2500 rpm for 30-40 min to prepare blocked isocyanate emulsion, and mixing the blocked isocyanate emulsion with amino silicone oil according to a mass ratio of 1: 1, uniformly mixing to obtain the organic silicon modified waterborne polyurethane smoothing agent.
Preferably, the amino silicone oil is TSF-4708 amino silicone oil.
The beneficial effects of the invention are:
1. according to the invention, during the first shaping and finishing, the organosilicon modified waterborne polyurethane is used as an organosilicon smoothing agent, the smoothing agent can endow the fabric with a unique soft and glutinous but not oily hand feeling style, and the fabric has good hydrophilicity, small yellowing and good rebound resilience, and can keep the vividness of a light color fabric and the whiteness of a white fabric; compared with the common amino silicone oil softening agent TSF-4708, the blocked isocyanate in the smoothing agent can react with-OH on the surface of the cotton fabric, and the chemical bond provides a strong covalent bond between the fabric and the softening agent, so that the size stability of the cotton fabric is improved, and the finished cotton fabric has good water washing resistance.
2. The three-proofing finishing agent used in the second sizing finishing is a short-chain C6 fluorine-containing three-proofing finishing agent, the product can effectively prevent water and oily stains from permeating into fibers, and the finished fabric has good water, oil and stain resistance, has little influence on whiteness, hand feeling, air permeability and the like of the fabric, and does not influence the serviceability of the fabric; compared with C8 fluorine-containing three-proofing finishing agent 56085, the finishing agent is more environment-friendly and does not contain APEO, and PFOS and PFOA are both lower than the detection limit; compared with a fluorine-free waterproof finishing agent XF-5001, the oil-proof and dirt-proof finishing agent is more excellent in oil-proof and dirt-proof performances.
3. The cross-linking agent used in the second setting and finishing is polyvinyl alcohol, and the product can be combined with the pure cotton fabric, the three-proofing finishing agent and the waterborne polyurethane smoothing agent through hydrogen bonds, so that a compact entangled resin network is formed on the surface of the finished pure cotton fabric, the water washing resistance of the finished cotton fabric is greatly improved, the market demand is met, and the product has good market popularization value.
Detailed Description
The technical solution of the present invention will be further specifically described below by way of specific examples. It is to be understood that the invention is not limited to the following examples, and that any changes and/or modifications may be made to the invention as described herein.
In the present invention, all parts and percentages are by weight unless otherwise specified, and the equipment and materials used are commercially available or commonly used in the art. The methods in the following examples are conventional in the art unless otherwise specified.
The preparation method of the organosilicon smoothing agent comprises the following steps: (1) mixing (2, 4, 6-trioxotriazine-1, 3, 5(2H, 4H, 6H) -triyl) tri (hexamethylene) isocyanate, 1, 6-hexanediol and polyethylene glycol monomethyl ether in a molar ratio of 2: 1: 1, reacting at 90 ℃ for 1.5h to synthesize a carbamate prepolymer, adding a blocking agent 3, 5-dimethylpyrazole, and mixing the blocking agent with the carbamate prepolymer in a molar ratio of 3: 1, mixing and reacting for 1 hour at 70 ℃ to synthesize closed isocyanate; (2) stirring the mixture on a homogenizer at a speed of 2000rpm for 30min, and adding water to prepare a blocked isocyanate emulsion (m) Water (W) ：m Blocked isocyanates 200:1) and an amino silicone oil softener TSF-4708 in a mass ratio of 1: 1, uniformly mixing to prepare an organic silicon modified waterborne polyurethane smoothing agent;
the amino silicone oil softener TSF-4708 is purchased from Zhejiang chemical energy Limited;
three-proofing finishing agent, short chain C6 fluorine-containing three-proofing finishing agent AG-E081, AG-E082;
a fluorine-free waterproof finishing agent XF-5001 available from Suzhou Heming textile auxiliary Co., Ltd;
c8 fluorine-containing three-proofing finish 56085 available from shaoxing sovereign textile auxiliaries;
the crosslinking agent, polyvinyl alcohol type crosslinking agent BP-24 or BP-26, was purchased from Kyowa Kazaki Kaisha chemical Co., Ltd.
Example 1
A three-proofing finishing process of a pure cotton fabric is characterized in that after the pretreatment and dyeing processes of the pure cotton fabric, the pure cotton fabric is subjected to three-proofing finishing, and the three-proofing finishing process comprises the following specific steps:
step 1, pretreating the pure cotton fabric according to the processes of drying wool → mercerizing → drying → etching wool → dyeing → drying.
Step 2, placing the pretreated pure cotton fabric on a setting machine according to a bath ratio of 1: 20, carrying out first setting and finishing by a finishing process of soaking and rolling (the mangle rolling ratio is 65%) → drying (80 ℃) → setting (130 ℃) → finished products, wherein the finishing liquid in a mangle of the setting machine is 35g/L of the organic silicon modified waterborne polyurethane smoothing agent, and the locomotive speed is 35 m/min.
And 3, placing the pure cotton fabric treated in the step 2 on a setting machine again according to the bath ratio of 1: 20, carrying out a second shaping and finishing process of one-dipping one-rolling (the mangle rolling rate is 6%) → drying (80 ℃) → shaping (150 ℃) → finished products, wherein the finishing liquid in a mangle of the shaping machine is 55g/L of three-proofing finishing agent AG-E081 and 8g/L of cross-linking agent BP-26, and the machine speed is 25 m/min.
And 4, pre-shrinking → rolling the finished pure cotton fabric to obtain the three-proofing pure cotton fabric.
Example 2
A three-proofing finishing process for a pure cotton fabric is characterized in that after the pretreatment and dyeing processes of the pure cotton fabric, the pure cotton fabric is subjected to three-proofing finishing, and the three-proofing finishing process sequentially comprises the following steps:
step 1, pretreating the pure cotton fabric according to the process of drying wool → mercerizing → drying → etching wool → dyeing → drying.
Step 2, placing the pretreated pure cotton fabric on a setting machine according to a bath ratio of 1: 20, carrying out first setting and finishing by a finishing process of soaking and rolling (mangle ratio is 75%) → drying (90 ℃) → setting (140 ℃) → finished products, wherein the finishing liquid in a mangle of the setting machine is 40g/L of the organic silicon modified waterborne polyurethane smoothing agent, and the machine speed is 40 m/min.
And 3, placing the pure cotton fabric treated in the step 2 on a setting machine again according to the bath ratio of 1: 20, carrying out a second shaping and finishing process of one-dipping one-rolling (mangle ratio is 75%) → drying (100 ℃) → shaping (160 ℃) → finished product, wherein the finishing liquid in a mangle of the shaping machine is 60g/L of three-proofing finishing agent AG-E081 and 10g/L of cross-linking agent BP-24, and the machine speed is 30 m/min.
And 4, pre-shrinking → rolling the finished pure cotton fabric to obtain the three-proofing pure cotton fabric.
Example 3
A three-proofing finishing process for a pure cotton fabric is characterized in that after the pretreatment and dyeing processes of the pure cotton fabric, the pure cotton fabric is subjected to three-proofing finishing, and the three-proofing finishing process sequentially comprises the following steps:
step 1, pretreating the pure cotton fabric according to the process of drying wool → mercerizing → drying → etching wool → dyeing → drying.
Step 2, placing the pretreated pure cotton fabric on a setting machine according to a bath ratio of 1: 20, carrying out first setting and finishing by a finishing process of soaking and rolling (mangle ratio is 70%) → drying (100 ℃) → setting (150 ℃) → finished products, wherein the finishing liquid in a mangle of the setting machine is 45g/L of organic silicon modified waterborne polyurethane smoothing agent, and the locomotive speed is 45 m/min.
And 3, placing the pure cotton fabric treated in the step 2 on a setting machine again according to the bath ratio of 1: 20, carrying out a finishing process of one-time soaking and one-time rolling (mangle ratio is 70%) → drying (90 ℃) → shaping (170 ℃) → finished products to carry out secondary shaping finishing, wherein the finishing liquid in a mangle of the shaping machine is 65g/L of three-proofing finishing agent AG-E082 and 12g/L of crosslinking agent BP-26, and the machine speed is 35 m/min.
And 4, pre-shrinking → rolling the finished pure cotton fabric to obtain the three-proofing pure cotton fabric.
Comparative example 1
A three-proofing finishing process for a pure cotton fabric is characterized in that after the pretreatment and dyeing processes of the pure cotton fabric, the pure cotton fabric is subjected to three-proofing finishing, and the three-proofing finishing process sequentially comprises the following steps:
step 1, pretreating the pure cotton fabric according to the process of drying wool → mercerizing → drying → etching wool → dyeing → drying.
Step 2, placing the pretreated pure cotton fabric on a setting machine according to a bath ratio of 1: 20, carrying out first sizing finishing by a finishing process of soaking and rolling (mangle ratio is 75%) → drying (90 ℃) → sizing (140 ℃) → finished products, wherein the finishing liquid in a mangle of the sizing machine is 40g/L amino silicone oil softener TSF-4708, and the machine speed is 40 m/min.
And 3, placing the pure cotton fabric treated in the step 2 on a setting machine again according to the bath ratio of 1: 20, carrying out a finishing process of one-time soaking and one-time rolling (mangle ratio is 75%) → drying (100 ℃) → shaping (160 ℃) → finished products to carry out secondary shaping finishing, wherein the finishing liquid in a rolling groove of the shaping machine is 60g/L of three-proofing finishing agent AG-E081 and 10g/L of crosslinking agent BP-24, and the machine speed is 30 m/min.
And 4, pre-shrinking → rolling the finished pure cotton fabric to obtain the three-proofing pure cotton fabric.
Comparative example 2
A three-proofing finishing process of a pure cotton fabric is characterized in that after the pretreatment and dyeing processes of the pure cotton fabric, the pure cotton fabric is subjected to three-proofing finishing, and the three-proofing finishing process comprises the following specific steps:
step 1, pretreating the pure cotton fabric according to the process of drying wool → mercerizing → drying → etching wool → dyeing → drying.
Step 2, placing the pretreated pure cotton fabric on a setting machine according to a bath ratio of 1: 20, carrying out first setting and finishing by a finishing process of soaking and rolling (mangle ratio is 75%) → drying (90 ℃) → setting (140 ℃) → finished products, wherein the finishing liquid in a mangle of the setting machine is 40g/L of the organic silicon modified waterborne polyurethane smoothing agent, and the machine speed is 40 m/min.
And 3, placing the pure cotton fabric treated in the step 2 on a setting machine again according to the bath ratio of 1: 20, carrying out a second setting and finishing process of one-dipping one-rolling (mangle ratio is 75%) → drying (100 ℃) → setting (160 ℃) → finished product, wherein the finishing liquid in a mangle of the setting machine is 60g/L of three-proofing finishing agent 56085 and 10g/L of cross-linking agent BP-24, and the machine speed is 30 m/min.
And 4, pre-shrinking → rolling the finished pure cotton fabric to obtain the three-proofing pure cotton fabric.
Comparative example 3
A three-proofing finishing process of a pure cotton fabric is characterized in that after the pretreatment and dyeing processes of the pure cotton fabric, the pure cotton fabric is subjected to three-proofing finishing, and the three-proofing finishing process comprises the following specific steps:
step 1, pretreating the pure cotton fabric according to the process of drying wool → mercerizing → drying → etching wool → dyeing → drying.
Step 2, placing the pretreated pure cotton fabric on a setting machine according to a bath ratio of 1: 20, carrying out first-time shaping and finishing by a finishing process of one-time soaking and one-time rolling (mangle ratio is 75%) → drying (90 ℃) → shaping (140 ℃) → finished products, wherein the finishing liquid in a mangle of the shaping machine is 40g/L of organosilicon modified waterborne polyurethane smoothing agent, and the machine speed is 40 m/min.
And 3, placing the pure cotton fabric treated in the step 2 on the setting machine again according to the bath ratio of 1: 20, carrying out a second setting and finishing process of one-dipping one-rolling (mangle ratio is 75%) → drying (100 ℃) → setting (160 ℃) → finished product, wherein the finishing liquid in a mangle of the setting machine is 60g/L of fluorine-free waterproof finishing agent XF-5001 and 10g/L of crosslinking agent BP-24, and the machine speed is 30 m/min.
And 4, pre-shrinking → rolling the finished pure cotton fabric to obtain the three-proofing pure cotton fabric.
Comparative example 4
A three-proofing finishing process of a pure cotton fabric is characterized in that after the pretreatment and dyeing processes of the pure cotton fabric, the pure cotton fabric is subjected to three-proofing finishing, and the three-proofing finishing process comprises the following specific steps:
step 1, pretreating the pure cotton fabric according to the process of drying wool → mercerizing → drying → etching wool → dyeing → drying.
Step 2, placing the pretreated pure cotton fabric on a setting machine according to a bath ratio of 1: 20, carrying out first setting and finishing by a finishing process of soaking and rolling (mangle ratio is 75%) → drying (90 ℃) → setting (140 ℃) → finished products, wherein the finishing liquid in a mangle of the setting machine is 40g/L of the organic silicon modified waterborne polyurethane smoothing agent, and the machine speed is 40 m/min.
And 3, placing the pure cotton fabric treated in the step 2 on a setting machine again according to the bath ratio of 1: 20, carrying out a second setting and finishing process of one-time soaking and one-time rolling (mangle ratio is 75%) → drying (100 ℃) → setting (160 ℃) → finished product, wherein the finishing liquid in a mangle of the setting machine is 60g/L of three-proofing finishing agent AG-E081, and the machine speed is 30 m/min.
And 4, pre-shrinking → rolling the finished pure cotton fabric to obtain the three-proofing pure cotton fabric.
The three-proofing purified cotton fabrics prepared under the process conditions described in examples 1-3 and comparative examples 1-4 were subjected to the test, and the results thereof are shown in table 1.
TABLE 1
And (3) a washing process: washing for 10 times/20 times at room temperature, 12 min/cycle → washing powder addition and washing cloth → washing with clear water for 3 times → drying at 66 ℃ → conditioning → testing performance
After 10 washes at room temperature, the results are shown in table 2.
TABLE 2
After 20 washes at room temperature, the results are shown in table 3.
TABLE 3
As shown in the indexes in Table 1, it can be seen that all the three-proofing pure cotton fabrics prepared under the process conditions of examples 1, 2 and 3 have good water-proofing, oil-proofing and stain-proofing properties and are soft and smooth in hand feeling, wherein the three-proofing effect of the preferred process condition of example 2 is slightly better than that of examples 1 and 3; and the content of perfluorooctane sulfonyl compounds (PFOS) and perfluorooctanoic acid substances (PFOA) reaches the national standard and meets the taking requirement.
As can be seen from tables 2 and 3, after washing for 10 and 20 times at room temperature, the examples still have good three-proofing effect, do not greatly affect the hand feeling of the fabrics, and have good water washing resistance.
Compared with the comparative example 1, the comparison example 2 shows that the softening effect of the organosilicon modified waterborne polyurethane smoothing agent is equivalent to that of the amino silicone oil softening agent TSF-4708, the fabric can be endowed with soft hand feeling, and after 20 times of washing, the fabric finished by the organosilicon modified waterborne polyurethane smoothing agent still has soft hand feeling, and the effect is better than that of the amino silicone oil softening agent TSF-4708.
As can be seen from comparison example 2, comparative example 2 and comparative example 3, the short-chain C6 fluorine-containing three-proofing finishing agent has the same three-proofing effect as the C8 fluorine-containing three-proofing finishing agent and is superior to the fluorine-free waterproof finishing agent; and the short-chain C6 fluorine-containing three-proofing finishing agent does not contain APEO, and PFOS and PFOA are both lower than the detection limit, so the short-chain C6 fluorine-containing three-proofing finishing agent is better than the C8 fluorine-containing three-proofing finishing agent in the aspect of environmental protection.
As can be seen from comparison between example 2 and comparative example 4, the fabric has better washing resistance after the polyvinyl alcohol crosslinking agent is added into the finishing liquid.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The three-proofing finishing process of the pure cotton fabric provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. A three-proofing finishing process of pure cotton fabrics is characterized by sequentially comprising the following steps:
s1 pretreatment of pure cotton fabric
Pretreating the pure cotton fabric according to the process of drying wool → mercerizing → drying → etching wool → dyeing → drying,
s2, first sizing and finishing
Placing the pretreated pure cotton fabric on a setting machine according to a bath ratio of 1: 20, performing first-time shaping and finishing by a finishing process of soaking and rolling → drying at 80-100 → shaping at 150 ℃ → finished product, wherein the finishing liquid in a rolling groove of the shaping machine is an organic silicon smoothing agent;
s3, second sizing and finishing
Placing the pure cotton fabric treated by the S2 on a setting machine again according to the bath ratio of 1: 20, performing a second shaping and finishing by a soaking and rolling process → 80-100 ℃ drying → 150-;
s4, preshrinking and rolling
And (4) performing preshrinking → rolling on the finished pure cotton fabric to obtain the three-proofing pure cotton fabric.
2. The three-proofing finishing process of the pure cotton fabric according to claim 1, characterized in that: the organosilicon smoothing agent of S2 is organosilicon modified waterborne polyurethane smoothing agent, and the dosage is 35-45 g/L.
3. The three-proofing finishing process of the pure cotton fabric according to claim 1, characterized in that: the speed of the sizing in S2 is 35-45m/min, and the temperature is 130-150 ℃.
4. The three-proofing finishing process of the pure cotton fabric according to claim 1, characterized in that: s3, the three-proofing finishing agent is one of short-chain C6 fluorine-containing three-proofing finishing agents AG-E081 or AG-E082, and the dosage of the finishing agent is 55-65 g/L.
5. The three-proofing finishing process of the pure cotton fabric according to claim 1, characterized in that: s3 the cross-linking agent is one of polyvinyl alcohol type cross-linking agents BP-24 or BP-26, and the dosage of the cross-linking agent is 8-12 g/L.
6. The three-proofing finishing process of the pure cotton fabric according to claim 1, characterized in that: the speed of the sizing in S3 is 25-35m/min, and the temperature is 150-170 ℃.
7. The three-proofing finishing process of the pure cotton fabric according to claim 1, characterized in that: in S2 and S3, the mangle ratio of one-dip-one-roll is 65-75%.
8. The three-proofing finishing process of the pure cotton fabric according to claim 2, characterized in that: the preparation method of the organosilicon modified waterborne polyurethane smoothing agent comprises the following steps:
(1) mixing (2, 4, 6-trioxotriazine-1, 3, 5(2H, 4H, 6H) -triyl) tris (hexamethylene) isocyanate, 1, 6-hexanediol and polyethylene glycol monomethyl ether in a molar ratio of 2: 1: 1, mixing the mixture at 90 +/-5 ℃ for reacting for 1.5 to 2 hours to synthesize a carbamate prepolymer, adding a sealing agent 3, 5-dimethylpyrazole, and reacting at 70 ℃ for 1 to 2 hours to synthesize a sealed isocyanate, wherein the molar ratio of the 3, 5-dimethylpyrazole to the carbamate prepolymer is 3: 1;
(2) adding 200-250 times of water by mass into the blocked isocyanate, stirring at 1500-2500 rpm for 30-40 min to prepare blocked isocyanate emulsion, and mixing the blocked isocyanate emulsion with amino silicone oil according to a mass ratio of 1: 1, uniformly mixing to obtain the organic silicon modified waterborne polyurethane smoothing agent.
9. The three-proofing finishing process of pure cotton fabric according to claim 8, characterized in that: the amino silicone oil is TSF-4708 amino silicone oil.
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