CN112878047B - Ultraviolet absorbent and application thereof in fabric finishing - Google Patents
Ultraviolet absorbent and application thereof in fabric finishing Download PDFInfo
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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
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/402—Amides imides, sulfamic acids
- D06M13/432—Urea, thiourea or derivatives thereof, e.g. biurets; Urea-inclusion compounds; Dicyanamides; Carbodiimides; Guanidines, e.g. dicyandiamides
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/14—The ring being saturated
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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
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
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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
- D06M2200/25—Resistance to light or sun, i.e. protection of the textile itself as well as UV shielding materials or treatment compositions therefor; Anti-yellowing treatments
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Abstract
The invention discloses an ultraviolet absorbent and application thereof in fabric finishing, belonging to the field of functional auxiliaries. Firstly synthesizing an ultraviolet absorbent, and then preparing the ultraviolet absorbent and a dispersant M-9 into finishing liquid, wherein the concentration of the ultraviolet absorbent is 15g/L, and the concentration of the dispersant M-9 is 10 g/L; and then, soaking the polyester fabric in the finishing liquid for 5min, taking out and rolling on a padder, carrying out three-soaking and three-rolling on the polyester fabric, pre-drying at 80 ℃ for 10min and baking at 160 ℃ for 5min after padding, taking out and washing with water, and drying at 60 ℃ after washing to obtain the finished polyester fabric. The finished polyester fabric has good ultraviolet-proof effect and good washing fastness, the UPF can still reach more than 180 after washing for more than 40 times, the polyester fabric can not be yellowed basically under long-time ultraviolet irradiation, and the ultraviolet-proof finishing has no obvious influence on other properties of the fabric, such as breaking strength, breaking elongation and the like.
Description
Technical Field
The invention relates to an ultraviolet absorbent and application thereof in fabric finishing, belonging to the field of functional auxiliaries.
Background
In recent years, with the rapid development of the scientific and technological level, people can enjoy comfortable and convenient life, and simultaneously, a large amount of fluorine and chlorine compounds are discharged into the atmosphere, so that the damage of the ozone layer is increased, and the ultraviolet radiation reaching the ground is increased. Ultraviolet refers to the general term of radiation with wavelength from 10nm to 400nm in electromagnetic spectrum, which can not be seen by human eyes, because of the wide existence of ultraviolet, the contact can not be avoided, a small amount of ultraviolet radiation has certain benefits to human bodies, and excessive ultraviolet radiation can damage the cornea and crystalline lens of eyes, disturb the immune system of human bodies, and even induce skin cancer. It follows that it is essential to have a uv-resistant finish on the fabric.
At present, common ultraviolet absorbers in China mainly comprise salicylates, benzophenones, benzotriazoles, cinnamates and the like, but the salicylate finishing agent has low melting point, easy sublimation and low absorption coefficient, and the finished fabric is easy to yellow; benzophenones do not have groups reactive with fabrics and cannot obtain higher fastness on fabrics, so the development of ultraviolet absorbers of the type is limited; the benzotriazole absorbs light of 300-400nm, has small affinity to fiber, and can cause damage to human body after long-term contact with the human body.
Therefore, there is a need for an ultraviolet absorber having good affinity for fabrics, good wash fastness, excellent ultraviolet resistance and preventing fabric yellowing.
Disclosure of Invention
In order to solve at least one problem, the invention provides a cinnamate ultraviolet absorbent which has a good ultraviolet-proof effect and a high ultraviolet absorptivity, wherein the structure of the ultraviolet absorbent contains an unsaturated conjugated system, and the action mechanism of the ultraviolet absorbent is mainly the electron transfer in a molecule. When ultraviolet rays are irradiated, energy is consumed through electron transfer in a conjugated system, high-energy ultraviolet rays are converted into harmless light waves or heat energy to be released, and the ultraviolet-resistant effect is achieved.
The first purpose of the invention is to provide an ultraviolet absorbent, which has a structure shown in a formula I:
in one embodiment of the present invention, the synthesis route of the ultraviolet absorber is as follows:
the second purpose of the invention is a synthesis method of the ultraviolet absorbent, which comprises the following steps:
dissolving 3,4, 5-trimethoxy cinnamic acid in dichloromethane, and then adding 4-Dimethylaminopyridine (DMAP) and N, N-Dicyclohexylcarbodiimide (DCC) for reaction; after the reaction is finished, filtering, washing, drying and rotary steaming are carried out to obtain the ultraviolet absorbent; wherein the mass ratio of the 3,4, 5-trimethoxy cinnamic acid to the 4-Dimethylaminopyridine (DMAP) to the N, N-Dicyclohexylcarbodiimide (DCC) is 2: 0.23: 1.91.
in one embodiment of the invention, the mass volume ratio of the 3,4, 5-trimethoxycinnamic acid to the dichloromethane is 2 g: 100 mL.
In one embodiment of the present invention, the reaction is carried out at room temperature (20-30 ℃) for 2h, and the stirring speed is 300-.
In one embodiment of the invention, the filtration is to filter out 1, 3-Dicyclohexylurea (DCU) (a poorly soluble by-product formed during the DCC reaction).
In one embodiment of the invention, the washing is fully washing with saturated sodium carbonate solution to remove unreacted 3,4, 5-trimethoxycinnamic acid; and then fully washing with water.
In one embodiment of the invention, the drying is performed by drying the solution with anhydrous magnesium sulfate for 30 min.
In one embodiment of the invention, the rotary evaporation is removal of dichloromethane.
In one embodiment of the present invention, the method for synthesizing the ultraviolet absorber comprises:
2g of 3,4, 5-trimethoxycinnamic acid (8.4mmol) was dissolved in 100mL of dichloromethane, 0.23g of 4-Dimethylaminopyridine (DMAP) (1.9mmol), 1.91g N, N-Dicyclohexylcarbodiimide (DCC) (9.3mmol) were added and the mixture was stirred at 25 ℃ for 2 hours; filtering 1, 3-Dicyclohexylurea (DCU) after the reaction is finished, fully washing with a saturated sodium carbonate solution to remove unreacted 3,4, 5-trimethoxycinnamic acid, and fully washing with water; and drying the solution by using anhydrous magnesium sulfate, filtering to obtain a colorless transparent solution, and performing rotary evaporation to remove dichloromethane to obtain the target product ultraviolet absorbent.
The third purpose of the invention is the application of the ultraviolet absorbent in the fabric finishing, the application is to prepare the ultraviolet absorbent and a dispersing agent into finishing liquid, and then the finishing liquid is used for padding, baking, washing and drying the fabric to obtain the finished fabric.
In one embodiment of the invention, the concentration of the ultraviolet absorber in the finishing liquid is 10-40 g/L.
In one embodiment of the invention, the dispersant in the finishing liquid is dispersant M-9 with the concentration of 5-20g/L, which is purchased from chemical engineering Co., Ltd in Henschel, North Hubei.
In one embodiment of the present invention, the bath ratio used in the finishing is 1: 15-50.
In one embodiment of the invention, the number of fabric padding in the finishing is at least two padding and two rolling, and the rolling residual rate is 30-100%.
In one embodiment of the present invention, the baking in the finishing is: pre-drying and then baking; wherein the pre-drying temperature is 60-90 deg.C, and the time is 5-30 min; the baking temperature is 160-190 ℃ and the baking time is 3-5 min.
In one embodiment of the invention, the drying temperature is 20 to 80 ℃.
In one embodiment of the invention, the fabric comprises a polyester fabric.
In one embodiment of the invention, the pad has a wet pick-up of 80-90%.
In an embodiment of the present invention, the application is specifically: preparing a finishing liquid from an ultraviolet absorbent and a dispersant M-9, wherein the concentration of the ultraviolet absorbent is 15g/L, and the concentration of the dispersant M-9 is 10 g/L; and then, soaking the polyester fabric in the finishing liquid for 5min, taking out and rolling on a padder, carrying out three-soaking and three-rolling on the polyester fabric, pre-drying at 80 ℃ for 10min and baking at 160 ℃ for 5min after padding, taking out and washing with water, and drying at 60 ℃ after washing to obtain the finished polyester fabric.
The fourth purpose of the invention is to provide a method for preparing the ultraviolet-proof polyester fabric, which comprises the following steps:
preparing the ultraviolet absorbent and a dispersant M-9 into finishing liquid, wherein the concentration of the ultraviolet absorbent is 15g/L, and the concentration of the dispersant M-9 is 10 g/L; and then, soaking the polyester fabric in the finishing liquid for 5min, taking out the polyester fabric, rolling the polyester fabric on a padder, performing three-soaking and three-rolling on the polyester fabric, pre-drying the polyester fabric at 80 ℃ for 10min and baking the polyester fabric at 160 ℃ for 5min after padding, taking out the polyester fabric, washing the polyester fabric with water, and drying the polyester fabric at 60 ℃ after washing to obtain the anti-ultraviolet polyester fabric.
The invention has the beneficial effects that:
(1) the ultraviolet absorbent has good ultraviolet resistance effect and good optical stability after being applied to fabrics, and is not easy to yellow.
(2) After the ultraviolet absorbent is applied to the fabric, the strength of the polyester fabric is basically not influenced, and the breaking strength and the breaking elongation of the fabric in the warp and weft directions before and after finishing are reduced by less than 1%.
(3) The ultraviolet absorbent has good washing fastness after being applied to fabrics, the ultraviolet-proof effect of the finished fabrics is tested according to the national standard GB/T18830-2009 ultraviolet-proof performance of the textiles, the UPF of the finished fabrics is more than 180, and the UPF can still reach more than 180 after 40 times of washing, so that the requirements of ultraviolet-proof products are met.
(4) After the ultraviolet absorbent is applied to the fabric, the whiteness of the fabric is basically kept unchanged, and the whiteness reduction rate is below 1.28%.
(5) The ultraviolet absorbent of the invention does not have negative influence on the service stability of terylene after being applied to fabrics.
Drawings
FIG. 1 shows the NMR spectrum of the UV absorber obtained in example 1.
FIG. 2 is a mass spectrum of the UV absorber obtained in example 1.
FIG. 3 is a test chart of the ultraviolet performance of the raw material 3,4, 5-trimethoxycinnamic acid.
FIG. 4 is a graph showing the ultraviolet properties of the ultraviolet absorber obtained in example 1.
FIG. 5 is a thermogravimetric plot of an ultraviolet absorber finished polyester fabric.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of better illustrating the invention and is not intended to limit the invention thereto. The polyester fabric adopted by the embodiment is pure polyester knitted fabric and is provided by a tin-free red bean group.
The test method comprises the following steps:
1. testing ultraviolet absorption performance: accurately weighing a certain amount of product, dissolving the product with absolute ethyl alcohol, preparing a solution with the concentration of c, testing the solution on an ultraviolet-visible spectrophotometer at 185-400 nm, measuring the absorbance A of the product, calculating the absorbance at the maximum absorption wavelength of the product by using the Lambert beer law, and calculating the molar absorption coefficient epsilon at the position, wherein the specific calculation formula is as shown in formula (1):
wherein, A: absorbance, c: solution concentration (mol/L), L: the distance (cm) of liquid through which the ultraviolet light passes.
2. Soaping of the finished fabric: washing the finished fabric according to GB/T8629-2001, wherein the bath ratio is 1: 30, washing the mixture at the temperature of 30 ℃ for 10min with the concentration of the washing liquor of 1.1g/L, dehydrating, then injecting water for washing for 2min, and drying, wherein the process is one-time washing.
3. And (3) testing ultraviolet resistance: according to the national standard GB/T18830-2009 textile ultraviolet protection performance test, a textile ultraviolet protection factor tester (Cary50) is used for testing UPF values after different washing times.
4. And (3) testing the breaking strength: the breaking strength of the terylene fabric is determined according to the standard of GB/T3923-1997. A sample 20X 6cm long was taken, the selvage yarns were pulled off to a width of 5cm, and then several measurements were carried out to take an average.
Example 1: synthesis of ultraviolet absorbers
The synthesis method of the ultraviolet absorbent comprises the following steps:
2g of 3,4, 5-trimethoxycinnamic acid (8.4mmol) was dissolved in 100mL of dichloromethane, 0.23g of 4-Dimethylaminopyridine (DMAP) (1.9mmol) and 1.91g N, N-Dicyclohexylcarbodiimide (DCC) (9.3mmol) were added, and the mixture was stirred at 25 ℃ at 400rpm for 2 hours; filtering 1, 3-Dicyclohexylurea (DCU) after the reaction is finished, fully washing with a saturated sodium carbonate solution to remove unreacted 3,4, 5-trimethoxycinnamic acid, washing with water again, drying the solution with anhydrous magnesium sulfate, filtering to obtain a colorless transparent solution, and removing dichloromethane by rotary evaporation to obtain a target product;
the specific synthetic route is as follows:
the obtained product was tested, and the test results were: the yield is 95.3%; the results of the synthetic resonance hydrogen spectra of the final product (fig. 1) are: 1 H NMR(400MHz,CDCl 3 )δ7.59(d,J＝15.3Hz,1H),6.71(s,2H),6.62(d,J＝15.3 Hz,1H),4.16(s,1H),3.87(d,J＝2.7Hz,9H),3.84–3.67(m,1H),2.02-1.82(m,10H),1.37–1.12(m,10H).
FIG. 2 is a mass spectrum of the synthesized product (UV absorber), and the test sample (M + H) + ) 445.2 respectively, from which a molecular mass of 444.2 can be deduced. As can be seen from fig. 1 and 2: example 1 a uv absorber of formula 1 was synthesized.
EXAMPLE 2 Properties of UV absorbers
Weighing a certain mass of raw material 3,4, 5-trimethoxycinnamic acid, dissolving in ethanol to prepare the solution with the concentration of 3.74 multiplied by 10 - 5 The absorbance A of the solution of mol/L at the highest absorption position (230nm) of the raw material 3,4, 5-trimethoxycinnamic acid to ultraviolet is 0.669, and the molar absorptivity epsilon of the obtained raw material 3,4, 5-trimethoxycinnamic acid is calculated 230 Is 1.79X 10 4 mol/cm. As shown in particular in figure 3.
FIG. 4 is a graph of the UV absorption performance of the UV absorber described in example 1. As can be seen from fig. 4: the ultraviolet absorption performance is better within the wave bands of 200.5-250.5 nm and 270.5-340.5 nm; the absorbance of the product reaches the maximum at 201.5nm, and the molar absorptivity epsilon of the product is calculated 201.5 Is 7.731X 10 4 mol/cm (in this case c is 7.12X 10) -6 mol/L) has good ultraviolet absorption performance in the whole UV-B (280-320 nm) region, is a good ultraviolet finishing agent for resisting ultraviolet radiation in the whole UV-B region, and has a molar absorptivity epsilon of the product even at a wave trough of 260.0nm 260 Also has 1.10 × 10 4 mol/cm, the absorption capacity of the UV absorber is greatly improved compared with the absorption capacity of the raw material (figure 3) to UV. And 3,4, 5-trimethoxy cinnamon as raw materialThe acid has certain ultraviolet absorption capacity, and the relative molecular mass of the whole molecule is increased while the ultraviolet absorption capacity of the molecule is improved after the esterification of the acid, so that the stability of the product is improved. Thus, the synthetic UV absorber is a finish that possesses good UV absorption properties throughout the UV region.
EXAMPLE 3 use of UV absorbers
Uniformly mixing the ultraviolet absorbent obtained in the example 1 with a dispersant M-9 to obtain finishing liquid, wherein the concentration of the ultraviolet absorbent is 15g/L, and the concentration of the dispersant M-9 is 10 g/L; and then, soaking the polyester fabric in the finishing liquid for 5min, taking out the polyester fabric, rolling the polyester fabric on a padder (the liquid carrying rate is 80%), carrying out three-soaking and three-rolling on the polyester fabric, pre-drying the polyester fabric at 80 ℃ for 10min, baking the polyester fabric at 160 ℃ for 5min after padding, taking out the polyester fabric, washing the polyester fabric with water, and drying the polyester fabric at 60 ℃ to obtain the finished polyester fabric.
The performance pair ratios of the polyester fabrics before and after finishing are shown in table 1:
TABLE 1 comparison of the various properties of polyester fabrics before and after finishing
| Performance of polyester fabric | Before finishing | After finishing |
| Breaking strength (warp direction) (N) | 622 | 618 |
| Breaking strength (weft) (N) | 459 | 456 |
| Elongation at break (warp direction) (%) | 27.49 | 27.36 |
| Elongation at break (weft) (%) | 26.60 | 26.41 |
| Whiteness (WH) 0 /％) | 92.77 | 92.45 |
| UPF | 92.45 | 191.27 |
The obtained finished polyester fabric was washed with water for 5, 10, 20, 25, and 30 times, and the properties of the obtained finished polyester fabric were as shown in table 2 below: as can be seen from table 2: compared with the original cloth, the whiteness of the finished terylene is basically unchanged, and the UPF value is greatly improved. After 5 times of soaping, the whiteness of the fabric is basically kept unchanged, the UPF is slightly reduced, after 40 times of soaping, the whiteness of the fabric is basically unchanged, and the UPF value is still kept about 180, which shows that the ultraviolet absorbent has higher soaping fastness after being combined with the polyester fabric.
TABLE 2 Properties of polyester fabrics after finishing before and after washing with water
| Number of washing times/ |
0 | 5 | 10 | 20 | 40 |
| UPF | 191.27 | 184.95 | 183.02 | 180.45 | 180.1 |
| Whiteness degree | 92.45 | 92.25 | 92.35 | 92.55 | 92.35 |
Thermogravimetric analysis is carried out on the obtained finished polyester fabric, and the thermogravimetric analysis is specifically shown in figure 5. As can be seen from FIG. 5, the temperature at which the polyester fabric has significant mass loss before finishing is 372 deg.C, and the finished fabric has significant mass loss beginning at 373 deg.C, but the temperatures are substantially the same; the finished fabric shows a slight loss of mass at around 200 c, possibly due to the evaporation of auxiliaries such as uv absorbers. The temperature at which the polyester fabric before and after finishing is stable in quality at the later stage is 465 ℃ and 463 ℃ respectively, and the temperature is basically the same, so that the ultraviolet absorbent is not considered to have negative influence on the service stability of the polyester.
Carrying out an ultraviolet radiation yellowing test on the obtained finished polyester fabric, paving a polyester fabric sample finished by an ultraviolet absorbent on a sample tray of a UV-220 type ultraviolet test box (German OSRAM type ultraviolet bulb), setting the temperature to be 40 ℃, and measuring the whiteness of the fabric after irradiating for 36 hours, wherein the test result is shown in Table 3:
TABLE 3 comparison of the anti-yellowing effects of polyester fabrics before and after finishing
| Sample cloth | Initial Whiteness (WH) 0 /％) | Whiteness after UV irradiation (WH/%) | Percentage of decrease in whiteness (%) |
| Original polyester fabric | 92.77 | 84.38 | 8.56 |
| Finished polyester fabric | 92.45 | 91.26 | 1.28 |
Example 4 application of Process tuning
Adjustment 1:
the concentrations of the ultraviolet absorbers in example 2 were adjusted to 0, 5, 10 and 20g/L, and the other examples were consistent with example 3 to obtain the finished polyester fabrics.
The properties of the polyester fabric before and after finishing are shown in table 4: as can be seen from table 4: the ultraviolet absorption capacity of the terylene is basically improved along with the increase of the proportion of the ultraviolet absorbent, the ultraviolet resistance of the terylene fabric can be improved by increasing the dosage of the ultraviolet absorbent, but after the concentration of the finishing agent is increased from 15g/L to 20g/L, the UPF of the finished fabric is not improved any more, and the whiteness is obviously reduced. The UPF value of the original polyester fabric is higher, because the polyester fabric has better light resistance, smaller pores and smaller ultraviolet transmittance, and can better resist ultraviolet radiation. Under the condition of not adding the uvioresistant finishing agent, the UPF value of the polyester fabric is obviously reduced after the polyester fabric is finished in the same way as the added finishing agent.
TABLE 4 Properties of different UV absorbers on the polyester fabrics
| Amount of ultraviolet absorber (g/L) | 0 | 5 | 10 | 20 |
| UPF | 55.47 | 191.27 | 240.57 | 301.52 |
| Whiteness degree | 85.54 | 90.96 | 90.31 | 84.70 |
And (3) adjustment 2:
the baking temperature in the example 3 is adjusted to 180 ℃ and 190 ℃, and the polyester fabric after finishing is obtained in the same way as the example 3.
The obtained polyester fabric was subjected to a performance test, and the test results are shown in table 5: as can be seen from table 5: after the finishing temperature is increased from 160 +/-2 ℃ to 180 +/-2 ℃, the UPF of the polyester fabric is reduced, probably because the ultraviolet absorbent is separated from the polyester surface layer at the temperature, so that the effective components of the polyester fabric for absorbing ultraviolet rays are reduced, and the ultraviolet absorbent continuously enters the interior of the polyester fabric from hot air along with the continuous increase of the temperature, thereby causing the result of the UPF value increase of the fabric. However, the UPF of the fabric is not improved much from 160 +/-2 ℃ to 190 +/-2 ℃, but the whiteness of the fabric is reduced. Therefore, 160 ℃ was chosen as the optimum finishing temperature.
TABLE 5 Effect of baking temperature on the Properties of the finished Terylene fabrics
| Temperature/. degree.C | 140(±2) | 160(±2) | 180(±2) | 190(±2) |
| UPF | 157.8 | 191.27 | 173.93 | 222.75 |
| Whiteness degree | 85.54 | 92.45 | 90.72 | 90.75 |
Comparative example 1
The UV absorber from example 3 was replaced with the UV absorber (formula II) from patent (CN 107574660A):
the rest is kept consistent with the example 3, and the finished polyester fabric is obtained.
Comparative example 2
And replacing the dispersant M-9 in the example 3 with a dispersant NNO, and keeping the balance consistent with the example 3 to obtain the finished polyester fabric.
Comparative example 3
The UV absorber UV-T (available from Wuhan eosin Biotechnology Co., Ltd.) was substituted for the UV absorbing agent in example 3, and the rest was the same as example 3, to obtain a finished polyester fabric.
The obtained polyester fabric was subjected to a performance test, and the test results are shown in table 6:
table 6 results of performance test of the fabrics of example 3 and comparative examples 1 to 3
| Performance of polyester fabric | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Breaking strength (warp direction) (N) | 618 | 590 | 602 | 592 |
| Breaking strength (weft) (N) | 456 | 421 | 436 | 427 |
| Elongation at break (warp direction) (%) | 27.36 | 25.9 | 26.9 | 26.1 |
| Elongation at break (weft) (%) | 26.41 | 24.3 | 25.78 | 25.50 |
| Whiteness (WH) 0 /％) | 92.45 | 90.37 | 80.23 | 89.97 |
| UPF | 191.27 | 55.97 | 43.58 | 85 |
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by one skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The application of the ultraviolet absorbent in fabric finishing is characterized in that the ultraviolet absorbent and a dispersing agent are prepared into finishing liquid, and then the fabric is padded by using the finishing liquid, baked, washed and dried to obtain the finished fabric;
wherein, the structure of the ultraviolet absorbent is shown as formula I:
2. the use according to claim 1, characterized in that the concentration of the UV absorber in the finishing liquor is 10-40 g/L.
3. The use according to claim 1 or 2, characterized in that the dispersant in the finishing liquor is dispersant M-9, the concentration being 5-20 g/L.
4. Use according to claim 1 or 2, wherein the in-finishing bake is: pre-drying and then baking; wherein the pre-drying temperature is 60-90 deg.C, and the time is 5-30 min; the baking temperature is 160-190 ℃ and the baking time is 3-5 min.
5. Use according to claim 1 or 2, wherein the fabric comprises a polyester fabric.
6. The use according to claim 1, wherein the ultraviolet absorber is synthesized by the following route:
7. the use according to claim 1, wherein the method for synthesizing the ultraviolet absorber comprises the following steps:
dissolving 3,4, 5-trimethoxy cinnamic acid in dichloromethane, and then adding 4-Dimethylaminopyridine (DMAP) and N, N' -Dicyclohexylcarbodiimide (DCC) for reaction; after the reaction is finished, filtering, washing, drying and rotary steaming are carried out to obtain the ultraviolet absorbent; wherein the mass ratio of the 3,4, 5-trimethoxy cinnamic acid to the 4-Dimethylaminopyridine (DMAP) to the N, N' -Dicyclohexylcarbodiimide (DCC) is 2: 0.23: 1.91.
8. the use according to claim 7, wherein the reaction is carried out at 20-30 ℃ for 2 h.
9. A method for preparing an ultraviolet-proof polyester fabric is characterized by comprising the following steps:
preparing a finishing liquid from an ultraviolet absorbent and a dispersant M-9, wherein the concentration of the ultraviolet absorbent is 15g/L, and the concentration of the dispersant M-9 is 10 g/L; then, placing the polyester fabric into finishing liquor for soaking for 5min, taking out the polyester fabric, rolling the polyester fabric on a padder, carrying out three-soaking and three-rolling on the polyester fabric, pre-drying the polyester fabric for 10min at 80 ℃ and baking the polyester fabric for 5min at 160 ℃, taking out the polyester fabric for washing with water, and drying the polyester fabric at 60 ℃ after washing to obtain the anti-ultraviolet polyester fabric;
wherein, the structure of the ultraviolet absorbent is shown as formula I:
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| JP2006131603A (en) * | 2004-11-05 | 2006-05-25 | Shiseido Co Ltd | Cinnamic acid derivative, its application as ultraviolet absorber, ultraviolet-absorbing composition formulated therewith, and skin care preparation for external use |
| JP2008007443A (en) * | 2006-06-28 | 2008-01-17 | Shiseido Co Ltd | Cinnamic acid derivative, application of the same as ultraviolet ray absorber and ultraviolet ray absorbing composition formulated with the same, skin care preparation |
| JP2008007444A (en) * | 2006-06-28 | 2008-01-17 | Shiseido Co Ltd | New cinnamic acid derivative, application of the same as ultraviolet ray absorber and ultraviolet ray absorbing composition formulated with the same, skin care preparation |
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| CN106582066A (en) * | 2016-11-24 | 2017-04-26 | 上海交通大学 | Cinnamate type ultraviolet sun-screening agent molecular engram solid-phase extraction column as well as preparation and application thereof |
| CN107109227A (en) * | 2014-09-30 | 2017-08-29 | 光学转变公司 | UV absorbers |
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| CN1556786A (en) * | 2001-09-24 | 2004-12-22 | 株式会社太平洋 | 3,4,5-trimethoxy phenyl-based ester compound and preparation method thereof and whitening cosmetic composition containing the same |
| JP2006131603A (en) * | 2004-11-05 | 2006-05-25 | Shiseido Co Ltd | Cinnamic acid derivative, its application as ultraviolet absorber, ultraviolet-absorbing composition formulated therewith, and skin care preparation for external use |
| JP2008007443A (en) * | 2006-06-28 | 2008-01-17 | Shiseido Co Ltd | Cinnamic acid derivative, application of the same as ultraviolet ray absorber and ultraviolet ray absorbing composition formulated with the same, skin care preparation |
| JP2008007444A (en) * | 2006-06-28 | 2008-01-17 | Shiseido Co Ltd | New cinnamic acid derivative, application of the same as ultraviolet ray absorber and ultraviolet ray absorbing composition formulated with the same, skin care preparation |
| CN101157668A (en) * | 2007-10-31 | 2008-04-09 | 温州医学院 | Substituted cinnamic acid nitrogen-containing derivative having tumor cytotoxic activity |
| CN107109227A (en) * | 2014-09-30 | 2017-08-29 | 光学转变公司 | UV absorbers |
| CN106582066A (en) * | 2016-11-24 | 2017-04-26 | 上海交通大学 | Cinnamate type ultraviolet sun-screening agent molecular engram solid-phase extraction column as well as preparation and application thereof |
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