CN114088638B - Comprehensive judging method for crosslinking degree and crease-resistant effect of resin finishing fabric - Google Patents
Comprehensive judging method for crosslinking degree and crease-resistant effect of resin finishing fabric Download PDFInfo
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Abstract
The invention relates to a comprehensive judging method for the crosslinking degree and crease-resistant effect of resin finishing fabric, and belongs to the technical field of textile detection. The invention adopts a tumbling dyeing method or an oscillating dyeing method to dye the sample, then tests the K/S value, calculates the arithmetic average value of the K/S value, and judges the crosslinking degree of the resin; and calculating the crease recovery angle or the washed appearance flatness of the fabric according to the arithmetic average value of the dyeing K/S value, repairing the crease recovery angle to 0.5 degrees, repairing the washed appearance flatness to 0.1 level, and judging the crease-resistant effect of the fabric. The invention has scientific and reasonable design, can accurately judge the degree of resin crosslinking, and meanwhile, can judge the crease recovery angle and the washed appearance flatness of the fabric, saves test time, and is more applicable to dyeing and finishing enterprises with lack of detection instruments and need external inspection.
Description
Technical Field
The invention relates to a comprehensive judging method for the crosslinking degree and crease-resistant effect of resin finishing fabric, and belongs to the technical field of textile detection.
Background
The resin finishing fabric has the advantages of high crosslinking degree, good crease-resistant effect, high crease recovery angle and wash-and-wear performance level, serious fiber damage, great strength reduction, large color change, serious yellowing of white fabric and serious color change of light-colored fabric. The control of the finishing and crosslinking degree of the resin is very important in production, otherwise, the quality effect can not be achieved, or the fabric can not be used. At present, a dyeing method and a resin swelling coefficient test method are used for characterizing and evaluating the resin finishing crosslinking degree. The crease-resistant effect is evaluated by adopting methods such as crease recovery angle and appearance flatness detection after washing.
In textile industry standard FZ/T01080-2009 ' method for testing crosslinking degree of resin-finished fabrics ' dyeing method ', HI-2 resin crosslinking indicator is adopted for dyeing and identifying, and the dyed sample is reddish brown or yellowish, which indicates that the sample is sufficiently crosslinked; the color grass green indicates partial crosslinking and the color green indicates uncrosslinked. Dou Haiping and the like in the journal 2010 of printing and dyeing, disclose a paper for identifying the crosslinking degree of crease-resist finishing by a dyeing method, and also identify the crosslinking degree by the dyeing method, and the color of the dyed matter transits from green to yellow along with the improvement of the crosslinking degree of the fabric, so that the crosslinking degree of the fabric and the resin can be reflected. The standard or journal paper only roughly represents the crosslinking degree through the sense of color phenomenon, cannot be represented by data, and has strong subjectivity; more importantly, the crease-resistant effect of the fabric cannot be mastered by the standard or paper method. And meanwhile, the standard return unit and the drafting unit are consulted for many times, the dye used by the indicator is very few, manufacturers of the dye are not available, and the method is limited to use.
Zhang Shougang et al, in the paper published in dyeing and finishing technology, "measuring the crosslinking degree of cotton fibers by the swelling coefficient of fibers", test the difference between swelling coefficients of finished products and finished products after re-baking at the same time, if the difference is not large, it is indicated that the reaction of the finished products is more complete; the difference was large, indicating that the resin reaction was insufficient. The centrifuge used in the test method must satisfy 8000-10000m/s 2 The spinning enterprises do not have the instruments in the aspect, and the centrifuges in the aspects of biology, medical use and the like are needed to be referred to, but the centrifuge tube in the machine is only suitable for layering mixed liquid and is not suitable for separating cotton from water, and ampoule bottles with different thicknesses are needed to be developed. The water is thrown out along the thin pipe under the action of centrifugal force, so that the water and the cloth are not mixed after being separated, and the sample preparation, moisture absorption, centrifugation, drying and weighing processes can be all carried out in the same ampoule. Because the fiber after resin finishing is not easy to fully infiltrate into the fiber, 1g/L wetting penetrating agent is added, and the wetting time is prolonged to 16 hours, so that the fiber is fully wetted and swelled. In addition, the weight is measured immediately after centrifugal drainage, preferably m in an ampoule 1 Avoiding the reduction of moisture in the air. Drying and weighing m after drying 2 Is also arranged atAmpoule inside. It can be seen that the method is complicated in test, high in test operation precision requirement and long in test time which is more than 20 hours. The method can only see the crosslinking degree, and the crease resistance of the fabric cannot be mastered by the method.
The crease recovery angle test method is slightly different in the test methods of various countries and regions, the standard principle is the same, a crease recovery instrument is purchased in the test, a small long sample is only grown on the fabric during the test, after the fabric is folded in half, a load is applied for a certain time, after the load is removed, the sample is allowed to pass a certain time, and the recovery degree of the angle at the folding position is measured, for example, GB/T3819-1997 method for measuring the recovery angle of the crease recovery of textile fabrics.
The method, the equipment and the parameters for testing the appearance flatness after washing are different in all countries and regions, but the standard principle is the same, the washing is required to be repeated for multiple times, the drying is required, the washing is performed after humidity adjustment is carried out for 4 hours, the rating is carried out, 5 washing cycles are usually required, and the test time is long. And when the three-dimensional standard template is rated, the three-dimensional standard template is compared with six three-dimensional standard templates with washed appearance flatness, the eye is rated, nine series values of three observers for evaluating a group of three samples are averaged, the calculated result is reduced to the nearest half level, and the deviation of the subjective rating test result is larger. Such as GB/T13769-2009 test method for evaluating the appearance flatness of fabrics after washing.
Disclosure of Invention
The invention aims to solve the technical problems that: the defects of the prior art are overcome, the comprehensive judging method for the crosslinking degree and the crease-resistant effect of the resin finishing fabric is provided, the design is scientific and reasonable, the crease recovery angle and the washed appearance flatness of the fabric are judged while the resin crosslinking degree is accurately judged, the test time is saved, and the method is more applicable to dyeing and finishing enterprises with lack of detection instruments and external inspection.
The comprehensive judging method of the crosslinking degree and the crease-resistant effect of the resin finishing fabric adopts the following procedures:
1. sample preparation:
and cutting 5 pieces of the cloth sample with the size of 100+/-10 mm and 100+/-10 mm from the cloth sample to be tested, avoiding selvedge and cloth end when cutting the cloth sample, and weighing the cut cloth sample.
2. Preparing a dye liquor:
the dye usage was calculated according to 1% by weight of the cloth, and the dye was 5 medium-direct and high-reactivity reactive dyes such as reactive dye BLACK SR-F180% (Shanghai Annojia textile chemical Co., ltd.), RED DSW 200% (Shanghai Annojia textile chemical Co., ltd.), BLUE BRF 150% (Sumitomo chemical Co., ltd.), RED 3BF 150% (Sumitomo chemical Co., ltd.), and YELLOW 3RF 150% (Sumitomo chemical Co., ltd.).
The amount of water used was calculated according to a bath ratio of 1:15, i.e., 15mL of water was used for 1g of cloth, 5 dyes were mixed with water to prepare dye solutions, respectively, and poured into 5 steel cups or Erlenmeyer flasks.
3. Sample staining:
adopts a rolling dyeing method or a vibration dyeing method.
The rolling dyeing method comprises the following dyeing steps:
(1) Respectively placing the sample and the dye liquor into corresponding steel cups, placing the steel cups into a soaping color fastness tester with the temperature of 60+/-2 ℃ and the rotating speed of 40+/-2 r/min, respectively adding 40+/-0.5 g/L of anhydrous sodium sulfate after 3+/-1 min of operation, 5+/-1 min of operation, then adding 15+/-0.1 g/L of calcined soda, and 20+/-1 min of operation;
(2) Taking out the fabric from the steel cup, and flushing the fabric once by hot water at 60+/-5 ℃;
(3) The soaping color fastness testing machine is set to 90 ℃, 30+/-1 mL of 2g/L detergent maleic acid-acrylic acid copolymer sodium salt is added into a steel cup, a sample washed by hot water is put into the soaping color fastness testing machine, the steel cup is operated and washed for 15+/-1 min at 90+/-2 ℃, and then the steel cup is washed by clean water, and the sample is taken out and dried.
The dyeing step of the vibration type dyeing method is the same as the rolling type dyeing method:
(1) Respectively placing the samples into corresponding conical flasks, placing the conical flasks into an oscillating water bath kettle, and oscillating at 60+/-2 ℃ and an oscillating rate of 60+/-2 times/min; after shaking for 3+/-1 min, adding 40+/-0.5 g/L of anhydrous sodium sulfate, shaking for 5+/-1 min, adding 15+/-0.1 g/L of sodium carbonate, and shaking for 20+/-1 min;
(2) Taking out the sample from the conical flask, and flushing the sample once by hot water at 60+/-5 ℃;
(3) Adding 30+/-1 mL of 2g/L maleic acid-acrylic acid copolymer sodium salt detergent and a sample washed by hot water into a conical flask, placing the conical flask into a 90+/-2 ℃ oscillating water bath kettle, oscillating and cleaning for 15+/-1 min, washing with clear water, taking out the sample, and airing.
4. Test K/S value:
the dyed samples were tested for K/S values of 5 test samples on a DATACOLOR color measuring and matching instrument, respectively, and the arithmetic average of the dyed K/S values of 5 test samples was calculated.
5. Judging the crosslinking degree of the resin:
according to the arithmetic average value of different K/S values in different arrangement modes, the crosslinking degree is determined, and the judgment basis is shown in Table 1:
TABLE 1
(6) Judging the crease-resistant effect of the fabric:
and calculating the crease recovery angle or the washed appearance flatness of the fabric according to the arithmetic average value of the dyeing K/S value, namely the crease resistance effect of the fabric, wherein the crease recovery angle is repaired to be about 0.5 degrees, and the washed appearance flatness is repaired to be about 0.1 grade. The specific calculation formula is shown in Table 2.
TABLE 2
Note that: x in the above formula represents a dyeing K/S value; y represents the crease recovery angle; z represents the flatness of the appearance after washing.
The invention adopts five kinds of monochlorotriazine and vinyl sulfone type medium-temperature reactive dyes of light red, dark red, yellow, blue and black of two dye manufacturers for dyeing, and has strong coverage and consistent effect in two dyeing modes.
The detection principle of the invention is as follows:
the amide-formaldehyde resin finishing agent and the modified amide-formaldehyde resin finishing agent can form cross-links among cellulose molecules or form branched chains on the cellulose molecules, and the formed cross-links can be single molecules or macromolecules which are polycondensed into linear or net-shaped by themselves; in addition, the resin finishing agent can be deposited in an amorphous area of the fiber by resin, the cross-linking and deposition of the resin prevent the reactive dye from diffusing into the fiber, and simultaneously, the resin finishing agent reacts with hydroxyl groups on cellulose molecules to occupy groups which react with the reactive dye to form covalent bonds, so that the dye-uptake of the reactive dye is reduced, and the dye-uptake of the reactive dye is reduced when the resin cross-linking degree of the fabric is higher, so that the resin cross-linking degree of the fabric can be detected through the dye-uptake condition of the reactive dye.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the invention, a cloth sample to be tested (white or light-colored fabric) is dyed by adopting a tumbling dyeing method or a vibration dyeing method, different reactive dyes are respectively selected for dyeing the cloth sample, the K/S value of the cloth sample is tested after dyeing, the arithmetic average value of the dyed K/S values of the different reactive dyes is taken, the color of a sample is light, the lower the K/S value is, the more sufficient the resin is crosslinked, and meanwhile, the crease recovery angle or the appearance flatness after washing of the fabric can be calculated according to the calculated arithmetic average value of the dyed K/S value, namely the resin crosslinking degree of the fabric;
(2) The dye in the invention is easy to purchase, the two dyeing instruments are randomly selected, the flexibility is strong, the stability is good, the repeatability is good, the operation is simple, the degree of resin crosslinking of the fabric can be qualitatively and quantitatively judged, the crease recovery angle of the fabric after resin finishing or the appearance flatness after washing can be quantitatively and objectively calculated, and the difference between the crease recovery angle and the appearance flatness after washing is not large with the test result detected according to the test standard;
(3) The detection method provided by the invention can accurately judge the resin crosslinking degree and judge the crease recovery angle and the washed appearance flatness of the fabric, so that the test time is saved, and the detection method is more suitable for dyeing and finishing enterprises with lack of detection instruments and external detection.
Detailed Description
The invention is further illustrated below with reference to examples. These examples are only for illustration of the invention but are not limited thereto.
Example 1
The sample is white pure cotton plain weave yarn-dyed fabric, the warp and weft directions adopt pure cotton 14.6tex yarn, the warp density is 109/inch, the weft density is 70/inch, the finishing mode is mercerizing, liquid ammonia and non-ironing, non-ironing padding resin finishing agent LR-E100 g/L, catalyst RT-C30g/L, fiber protective agent LF-P20 g/L, softening agent MI-620g/L, and neutralizing acid PH-L2 g/L. The auxiliary agent process comprises the steps of two-soaking and two-rolling finishing liquid (rolling residual rate 67%) →drying (90 ℃ for 30 s), and respectively detecting the resin crosslinking degree of the fabric, testing the crease recovery angle and the appearance flatness after washing after baking for no baking, 145 ℃ for 1min, 150 ℃ for 2min, 155 ℃ for 3min, 160 ℃ for 4min, 165 ℃ for 3min and 165 ℃ for 5 min. The operation steps are as follows:
1) Sample preparation: and 5 pieces of cloth samples with the size of 90mm are cut from 7 cloth samples to be tested respectively, marks are made, and sample confusion is avoided.
2) Preparing a dye liquor: the reactive dyes BLACK SR-F180%, RED DSW 200%, BLUE BRF 150%, RED 3BF 150% and YELLOW 3RF 150% were used in an amount calculated by 1% by weight and the water amount was calculated by 1:15 by bath ratio, 5 dyes were mixed with water to prepare dye liquors, respectively, and poured into a steel cup.
3) Sample staining: respectively placing the fabric and the dye liquor into corresponding steel cups, heating the soaping color fastness testing machine to 60 ℃ in advance, respectively placing the steel cups into the soaping color fastness testing machine with the rotating speed of 42 revolutions per minute, after the steel cups are operated and kept warm for 4 minutes, adding 40.5g/L of anhydrous sodium sulphate, operating for 6 minutes, adding 14.9g/L of sodium carbonate, and operating for 21 minutes. The fabric was then removed from the steel cup and rinsed once with hot water at 65 ℃. The color fastness of the soaping is heated to 90 ℃ in advance, 31mL of 2g/L detergent WO-LR (maleic acid-acrylic acid copolymer sodium salt, zibo Lu Rui fine chemical Co., ltd.) and a sample washed by hot water are respectively added into a steel cup, the steel cup is put into a soaping color fastness testing machine, the steel cup is operated and washed for 15min at 92 ℃, and then washed by clean water, and the sample is taken out and dried.
4) Test K/S value: all the dyed samples are respectively tested on a DATACOLOR color measuring and matching instrument, the K/S values are correspondingly recorded, and the arithmetic average value of the K/S values of the dyed samples of different dyes after being baked by different baking processes is calculated.
TABLE 3 Table 3
5) Judging the crosslinking degree of the resin:
the more severe the baking conditions, the higher the degree of crosslinking. According to the mercerizing, liquid ammonia and non-ironing finishing mode, the K/S value is 1.8+/-0.3 when the crosslinking degree is complete, and the crosslinking degree can be ensured to be complete under the baking condition of more than 155 ℃ for 3 min.
6) Judging the crease-resistant effect of the fabric:
according to the arithmetic average value of dyeing K/S values and the crease-resistant effect calculation formula of the mercerizing, liquid ammonia and non-ironing finishing mode, the crease recovery angle is calculated according to the formula Y= -10.94X+220.4, the appearance flatness after washing is calculated according to Z= -0.112X+3.217, the crease recovery angle is repaired to about 0.5 degrees, and the appearance flatness after washing is repaired to about 0.1 level. In addition, the crease recovery angle and the washed appearance flatness are detected by sampling from 7 cloth samples to be tested, the crease recovery angle is tested according to GB/T3819-1997, the washed appearance flatness is washed at 49 ℃ according to GB/T13769-2009B type washing machine, the cloth samples are rolled and dried, the circulation test is carried out for 5 times, and the calculated result and the actual detection result according to the standard are compared as follows:
TABLE 4 Table 4
From the table, the deviation between the crease recovery angle of the fabric quantitatively measured and calculated by the dyeing K/S value and the actual crease recovery angle is smaller, and the deviation range is within +/-2%; the deviation between the appearance flatness of the fabric after washing and the actual test non-ironing level is smaller, and the deviation range is within +/-0.1 level.
Example 2
The sample is light gray pure cotton plain fabric which is piece-dyed, pure cotton 11.7tex yarn is adopted in warp and weft directions, warp density is 142 pieces/inch, weft density is 79 pieces/inch, the fabric is finished in a mercerizing and non-ironing manner, non-ironing padding resin finishing agent LR-E95 g/L, catalyst RT-C28 g/L, fiber protective agent LF-P22 g/L, softening agent MI-6 25g/L and neutralizing acid PH-L2 g/L. The auxiliary agent process comprises the steps of twice-soaking and twice-rolling finishing liquid (rolling residual rate 66%) →drying (90 ℃ for 33 s), and then respectively detecting the resin crosslinking degree of the fabric after baking at 145 ℃ for 1min, 150 ℃ for 2min, 155 ℃ for 3min, 160 ℃ for 4min, 165 ℃ for 3min and 165 ℃ for 5min, and testing the crease recovery angle and the appearance flatness after washing after baking. The operation steps are as follows:
1) Sample preparation: 5 pieces of cloth samples with the size of 100mm are cut from 7 cloth samples to be tested respectively, and marked.
2) Preparing a dye liquor: the reactive dyes BLACK SR-F180%, RED DSW 200%, BLUE BRF 150%, RED 3bf 150% and YELLOW 3rf 150% were mixed with water to prepare dye liquors, and the dye liquors were poured into conical flasks, wherein the dye usage was calculated by 1% by weight and the water usage was calculated by 1:15 bath ratio.
3) Sample staining: the oscillating water bath kettle is set to 60 ℃ in advance, and the temperature is raised to 60 ℃ in advance. Respectively placing the fabrics into corresponding conical flasks, placing the conical flasks into an oscillating water bath kettle, oscillating at an oscillating rate of 62 times/min, adding sodium sulphate 39.5g/L for oscillating for 4 minutes after oscillating for 2 minutes, adding sodium carbonate 15.1g/L, and oscillating for 19 minutes. The sample was removed from the flask and rinsed once with 62 ℃ hot water. Setting the oscillating water bath kettle at 90 ℃, heating to 90 ℃ in advance, adding 29mL of 2g/L detergent WO-LR and a sample washed by hot water into a conical flask, oscillating and cleaning for 16min at 92 ℃, washing once by clear water, and drying in an oven. Taking out the sample and airing.
4) Test K/S value: all the dyed samples are respectively tested on a DATACOLOR color measuring and matching instrument, the K/S values are correspondingly recorded, and the arithmetic average value of the K/S values of the dyed samples of different dyes after being baked by different baking processes is calculated.
TABLE 5
5) Judging the crosslinking degree of the resin:
according to the mercerizing and non-ironing finishing mode, the K/S value is 1.5+/-0.3 when the crosslinking degree is complete, and the crosslinking degree can be ensured to be complete under the baking condition of more than 155 ℃ for 3 min.
6) Judging the crease-resistant effect of the fabric:
according to the arithmetic average value of dyeing K/S values and the crease-resistant effect calculation formula of the mercerizing and non-ironing finishing mode, the crease recovery angle is calculated according to the formula Y= -13.81X+196.3, the appearance flatness after washing is calculated according to Z= -0.150X+3.244, the crease recovery angle is repaired to about 0.5 degrees, and the appearance flatness after washing is repaired to about 0.1 level. In addition, the crease recovery angle and the washed appearance flatness are detected by sampling from 7 cloth samples to be tested, the crease recovery angle is tested according to GB/T3819-1997, the washed appearance flatness is washed at 49 ℃ according to GB/T13769-2009B type washing machine, the cloth samples are rolled and dried, the circulation test is carried out for 5 times, and the calculated result and the actual detection result according to the standard are compared as follows:
TABLE 6
From the table, the deviation between the crease recovery angle of the fabric quantitatively measured and calculated by the dyeing K/S value and the actual crease recovery angle is smaller, and the deviation range is within +/-2.5%; the deviation between the appearance flatness of the washed fabric quantitatively measured by the dyeing K/S value and the appearance flatness of the washed fabric after actual test is smaller, and the deviation range is within +/-0.1 level.
Example 3
The sample is white pure cotton plain weave piece-dyed fabric, 7.3tex ply yarn is adopted in warp and weft directions, 119 warp densities/inch, 79 weft densities/inch, mercerizing, liquid ammonia and moisture crosslinking finishing, moisture crosslinking padding resin finishing agent CR-MA 200g/L, catalyst LRMC 100g/L, fiber protective agent SF-P20 g/L, softening agent CS20 g/L and penetrating agent SN-102g/L. The wet cross-linking auxiliary agent process comprises twice soaking and twice rolling finishing liquid (rolling residual rate 64%), tentering and drying at 90 ℃ and moisture content 6.3%, thermal insulation stacking for different time at 37 ℃, neutralization and washing, tentering. During the neutralization water washing, the water is washed with clear water at 60-75 ℃, then the water is neutralized in water at 75 ℃ with the pH value of about 9.8, and finally the water is washed with clear water at 60-75 ℃. After washing, a tenter softening treatment (softener 15g/L, neutralizing acid pH-N1 g/L) was carried out. The stacking time is divided into 4 hours, 8 hours, 12 hours, 16 hours, 20 hours and 24 hours, neutralizing and washing are carried out, the dyeing method is used for detecting the resin crosslinking degree of the fabric, and the crease recovery angle and the washed appearance flatness are tested. The operation steps are as follows:
1) Sample preparation: 5 pieces of cloth samples with the size of 110mm and the size of 110mm are respectively cut from cloth samples to be tested which are not subjected to moisture crosslinking stacking and 6 stacking times, and marking is carried out.
2) Preparing a dye liquor: the reactive dyes BLACK SR-F180%, RED DSW 200%, BLUE BRF 150%, RED 3BF 150% and YELLOW 3RF 150% were used in an amount calculated by 1% by weight and the water amount calculated by 1:15 by bath ratio, 5 dyes were mixed with water to prepare dye liquors, respectively, and poured into a steel cup of a soaper.
3) Sample staining: respectively placing the fabrics into corresponding steel cups, setting a soaping color fastness testing machine at 58 ℃, setting the rotating speed at 38 revolutions per minute, heating to 58 ℃ in advance, respectively placing the steel cups into the soaping color fastness testing machine, operating for 2 minutes, adding 40g/L of anhydrous sodium sulfate, operating for 4 minutes, adding 15g/L of sodium carbonate, and operating for 19 minutes. The fabric was then removed from the steel cup and rinsed once with 58 ℃ hot water. Setting the soaping color fastness testing machine at 88 ℃, heating to 88 ℃ in advance, adding 29mL of 2g/L detergent WO-LR and a hot water washed sample into a steel cup respectively, putting the steel cup into the soaping color fastness testing machine, running and washing for 14min at 88 ℃, washing with clear water, taking out the sample and airing.
4) Test K/S value: all the dyed samples were tested for K/S values on a DATACOLOR color measuring and matching instrument and the values were recorded correspondingly, and the arithmetic average of the K/S values of the samples subjected to different stacking processes were calculated for the different dyes.
TABLE 7
5) Judging the crosslinking degree of the resin:
according to the mercerizing, liquid ammonia and moisture crosslinking finishing mode, the K/S value is 0.56 when the crosslinking degree is complete, and the crosslinking degree can be ensured to be complete under the reaction condition that the crosslinking degree is piled for more than 20 hours.
6) Judging the crease-resistant effect of the fabric:
according to the arithmetic average value of dyeing K/S values, the calculation formula of crease resistance effect of mercerizing, liquid ammonia and moisture crosslinking finishing mode, the crease recovery angle is calculated according to the formula Y= 290.7-51.17X+5.07X 2 The flatness of the washed appearance is as Z=3.68-0.35X+0.028X 2 Calculated, the crease recovery angle was trimmed to about 0.5 °, and the post-wash appearance flatness was trimmed to about 0.1 grade. In addition, the crease recovery angle and the washed appearance flatness are detected by sampling from 7 cloth samples to be tested, the crease recovery angle is tested according to GB/T3819-1997, the washed appearance flatness is washed at 49 ℃ according to GB/T13769-2009B type washing machine, the cloth samples are rolled and dried, the circulation test is carried out for 5 times, and the calculated result and the actual detection result according to the standard are compared as follows:
TABLE 8
From the table, the deviation between the crease recovery angle of the fabric quantitatively measured and calculated by the dyeing K/S value and the actual crease recovery angle is smaller, and the deviation range is within +/-2.3%; the deviation between the appearance flatness of the washed fabric quantitatively measured by the dyeing K/S value and the appearance flatness of the washed fabric after actual test is smaller, and the deviation range is within +/-0.1 level.
7) Parallel test was performed by concussion staining:
in this example 3, 1) sample preparation 2) dye liquor preparation, the dye liquor was poured into conical flasks, respectively.
The oscillating water bath kettle is set to 60 ℃ in advance, and the temperature is raised to 60 ℃ in advance. Respectively placing the fabrics into corresponding conical flasks, placing the conical flasks into an oscillating water bath kettle, oscillating at an oscillating rate of 60 times/min, adding 40g/L of anhydrous sodium sulphate after oscillating for 3min, oscillating for 5min, adding 15g/L of sodium carbonate, and oscillating for 20 min. The sample was removed from the flask and rinsed once with hot water at 60 ℃. Setting the oscillating water bath kettle at 90 ℃, heating to 90 ℃ in advance, adding 30mL of 2g/L detergent WO-LR and a sample washed by hot water into a conical flask, oscillating and cleaning for 15min at 90 ℃, washing once by clear water, and drying in an oven. Taking out the sample and airing.
Test K/S value: all the dyed samples are respectively tested on a DATACOLOR color measuring and matching instrument, the K/S values are correspondingly recorded, and the arithmetic average value of the K/S values of the samples after different pretreatment procedures and different stacking times is calculated.
TABLE 9
The maximum difference between the average value of K/S dyed by the oscillation method and the average value of K/S dyed by the rolling method is 0.02, the difference is only 1.1%, the reproducibility is very strong, and the K/S dyed by the oscillation method and the K/S dyed by the rolling method can be flexibly selected according to the instrument condition.
By combining the three embodiments, the method can accurately judge the crosslinking degree of the fabric, calculate the crease recovery angle and the appearance flatness of the fabric after washing, master the crease resistance of the fabric, and has consistent effect of a tumbling dyeing method or a concussion dyeing method and flexible selection.
Of course, the foregoing is merely preferred embodiments of the present invention and is not to be construed as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and those skilled in the art will appreciate that the present invention is capable of equally varying and improving within the spirit and scope of the present invention.
Claims (6)
1. A comprehensive judging method for the crosslinking degree and crease-resistant effect of resin finishing fabric is characterized by comprising the following steps: the sample is dyed by adopting a tumbling dyeing method or an oscillating dyeing method, then the K/S value is tested, the arithmetic average value of the K/S value is calculated, the degree of resin crosslinking is judged, and the judgment is based on the following steps:
judging the crease-resistant effect of the fabric:
and calculating the crease recovery angle or the washed appearance flatness of the fabric according to the arithmetic average value of the dyeing K/S value, wherein the crease recovery angle is repaired to 0.5 degrees, the washed appearance flatness is repaired to 0.1 level, and the calculation is based on the following steps:
x in the above formula represents a dyeing K/S value; y represents the crease recovery angle; z represents the flatness of the appearance after washing.
2. The comprehensive judgment method for the crosslinking degree and crease-resistant effect of the resin finishing fabric according to claim 1, wherein the comprehensive judgment method is characterized by comprising the following steps: the dyes used for dyeing are respectively active dyes BLACK SR-F180%, RED DSW 200%, BLUE BRF 150%, RED 3BF 150% and YELLOW 3RF 150%.
3. The comprehensive judgment method for the crosslinking degree and crease-resistant effect of the resin finishing fabric according to claim 1, wherein the comprehensive judgment method is characterized by comprising the following steps: the test sample is obtained by respectively shearing 5 pieces of cloth samples with the sizes of 100+/-10 mm and 100+/-10 mm from the cloth sample to be tested, and respectively weighing.
4. The comprehensive judgment method for the crosslinking degree and crease-resistant effect of the resin finishing fabric according to claim 1, wherein the comprehensive judgment method is characterized by comprising the following steps: the mass ratio of the dye to the sample for dyeing is 1:100; the mass volume ratio of the sample to the water used in the dye liquor is 1g:15mL.
5. The comprehensive judgment method for the crosslinking degree and crease-resistant effect of the resin finishing fabric according to claim 1, wherein the comprehensive judgment method is characterized by comprising the following steps: the rolling dyeing process comprises the following steps:
(1) Respectively placing the sample and the dye liquor into corresponding steel cups, placing the steel cups into a soaping color fastness tester with the temperature of 60+/-2 ℃ and the rotating speed of 40+/-2 r/min, respectively adding 40+/-0.5 g/L of anhydrous sodium sulfate after 3+/-1 min of operation, 5+/-1 min of operation, then adding 15+/-0.1 g/L of calcined soda, and 20+/-1 min of operation;
(2) Taking out the fabric from the steel cup, and flushing the fabric once by hot water at 60+/-5 ℃;
(3) The soaping color fastness testing machine is set to 90 ℃, 30+/-1 mL of 2g/L detergent maleic acid-acrylic acid copolymer sodium salt is added into a steel cup, a sample washed by hot water is put into the soaping color fastness testing machine, the steel cup is operated and washed for 15+/-1 min at 90+/-2 ℃, and then the steel cup is washed by clean water, and the sample is taken out and dried.
6. The comprehensive judgment method for the crosslinking degree and crease-resistant effect of the resin finishing fabric according to claim 1, wherein the comprehensive judgment method is characterized by comprising the following steps: the dyeing process by the oscillation type dyeing method comprises the following steps:
(1) Respectively placing the samples into corresponding conical flasks, placing the conical flasks into an oscillating water bath kettle, and oscillating at 60+/-2 ℃ and an oscillating rate of 60+/-2 times/min; after shaking for 3+/-1 min, adding 40+/-0.5 g/L of anhydrous sodium sulfate, shaking for 5+/-1 min, adding 15+/-0.1 g/L of sodium carbonate, and shaking for 20+/-1 min;
(2) Taking out the sample from the conical flask, and flushing the sample once by hot water at 60+/-5 ℃;
(3) Adding 30+/-1 mL of 2g/L maleic acid-acrylic acid copolymer sodium salt detergent and a sample washed by hot water into a conical flask, placing the conical flask into a 90+/-2 ℃ oscillating water bath kettle, oscillating and cleaning for 15+/-1 min, washing with clear water, taking out the sample, and airing.
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