CN115928428A - Auxiliary agent for resisting high-temperature yellowing and phenol yellowing of textile, preparation method and application thereof - Google Patents
Auxiliary agent for resisting high-temperature yellowing and phenol yellowing of textile, preparation method and application thereof Download PDFInfo
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Abstract
The invention provides an assistant for resisting high-temperature yellowing and phenol yellowing of textiles, a preparation method and application thereof, wherein the assistant is prepared from a high-temperature yellowing resisting agent and a phenol yellowing resisting agent, the dosage of the high-temperature yellowing resisting agent is 40-100g/L, the dosage of the phenol yellowing resisting agent is 40-100g/L, and the application pH value is 4-6; the high-temperature yellowing resistant agent comprises 10-30% of antioxidant, 5-20% of cosolvent, 0-10% of emulsifier and water; the phenol yellowing resisting agent comprises 10-30% of phenol yellowing resisting agent, 5-15% of pH regulator and water. The anti-yellowing agent does not contain adipic dihydrazide components, does not adsorb formaldehyde in the environment, and avoids the formaldehyde content of finished clothes from exceeding the standard; the preparation method is simple and convenient, is easy to operate, and can endow the fabric with good high-temperature yellowing resistance and phenol yellowing resistance by one-pass rolling and baking process, so that better finished product quality is obtained; the times of padding and heat setting in the process are reduced, at least 50% of process water and processing time can be saved, the cost is reduced, and the production efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of textile industry, in particular to an auxiliary agent for resisting high-temperature yellowing and phenol yellowing of textile fabrics, a preparation method and application thereof, and especially relates to chinlon and blended fabrics thereof.
Background
Chemical fibers are the most important fiber raw materials in the textile industry, and account for two thirds of the total processing amount of textile fibers at present. Polyamide fibers, namely nylon and chinlon, are the first synthetic fibers appearing in the world, and are widely applied to products such as lady underwear, elastic knitted clothes, high-grade swimwear and the like due to the excellent characteristics of light weight, high specific strength, good rebound resilience, wear resistance and the like, and are well accepted and favored by wide consumers. Many underwear, swimsuits and the like need to be subjected to compression molding through long-time high-temperature treatment, if the white and light-colored fabrics are not subjected to anti-yellowing finishing, the macromolecular main chains of the white and light-colored fabrics are subjected to degradation or crosslinking reaction under the action of thermal oxidation, the macromolecular chains are broken, the conjugated system is changed, and a chromophore containing carbonyl is generated; in addition, nitrogen-containing groups (amino groups and amido groups) in the molecules can easily generate azo-based chromophores under the damp and hot conditions, and finally, the fabrics are yellowed and discolored, even are fragile, aged and reduced in strength, so that the appearance quality of the products is influenced, and the wearability is reduced.
In addition, chinlon and blended materials thereof are easy to generate phenol yellowing, and phenolic compounds containing steric hindrance are often added into a synthesized raw material TDI (toluene diisocyanate) to be used as an antioxidant BHT (2, 6-diisobutylphenol) so as to prevent light aging in the using and storing processes; in addition, the polyethylene film used as a common packaging material is also added with BHT mostly to prolong the service life. BHT is easy to volatilize and free on the surface of fiber, and generates DTNP (2, 6-di-tert-butyl-p-nitrophenol) by chemical reaction when encountering nitrogen oxide (NOx) such as NO2 in air or a packaging material such as a cardboard and the like under the conditions of external packaging and moist heat, the DTNP is colorless under an acidic state, is easy to sublimate and transfer under the room temperature condition, and is immediately yellowed when encountering an alkaline substance.
Therefore, due to the wide application of chinlon, spandex and blended fabrics in the field of textile and clothing, inevitable packaging and transportation links of textile materials and the requirement for high-temperature heat setting and compression molding of the fabrics, the addition of a phenol yellowing resistant agent and an antioxidant is needed to prevent the fabrics from yellowing under the conditions. At present, for the phenol-resistant and anti-thermal yellowing treatment of chinlon and nylon-ammonia fabrics, a two-step process is mostly adopted, and the working procedures of thermal yellowing resistance and phenol yellowing resistance are carried out in sequence.
Performing pre-setting and post-setting treatment on an anti-thermal yellowing agent DM-2915 and an anti-phenol yellowing agent DM-2903 used in Guangdong Germany fine chemical industry in sequence to obtain an anti-yellowing fabric; the problems of high-temperature compression molding and storage yellowing of the nylon spandex fabric are solved by a suction method phenol-resistant process and a post-sizing heat-resistant process by using a non-foam phenol-yellowing resistant agent FK-162LF and an antioxidant FK-161D without adipic Acid Diamide (ADH) in the chemical application of the medium spinning. However, in the above process, phenol-resistant and heat-resistant processes are separately performed, which increases the cost in various aspects such as energy, time and labor.
In the patent (CN 114481624A), after corresponding ammonium salt is generated by an aromatic sulfonic acid compound and an organic amine compound, the ammonium salt, a hydrazide compound and a phosphite antioxidant are compounded to form the anti-yellowing additive, and the anti-yellowing additive can be applied to polyamide and spandex textiles, and the yellowing problem of the textiles is improved by a double-dipping and double-rolling post-heat setting process. However, in the embodiment of the anti-yellowing additive, hazardous chemicals such as concentrated sulfuric acid, industrial formaldehyde, bisphenol and the like are required to be used, and the potential hazard of formaldehyde and bisphenol substances to human bodies due to residues cannot be eliminated; meanwhile, the technology only relates to the application of specific products to solve the yellowing problem of chinlon and spandex, and the application range is limited.
Based on the problems, the invention provides a novel processing aid for resisting high-temperature yellowing and phenol yellowing of chinlon and blended fabrics thereof and application thereof, and relates to chinlon and blended fabrics thereof.
Disclosure of Invention
The invention aims to provide an assistant for preventing high-temperature yellowing and phenol yellowing of textiles, a preparation method and an application thereof, so as to solve the problems in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the first purpose of the invention is to provide an assistant for textile fabric resisting high-temperature yellowing and phenol yellowing, which is prepared from a high-temperature yellowing resistant agent and a phenol yellowing resistant agent, wherein the dosage of the high-temperature yellowing resistant agent is 40-100g/L, the dosage of the phenol yellowing resistant agent is 40-100g/L, and the pH value is adjusted to 4-6, wherein the high-temperature yellowing resistant agent comprises the following components in percentage by weight:
antioxidant: 10 to 30 percent
Cosolvent: 5 to 20 percent of
Emulsifier: 0 to 10 percent
The phenol yellowing resistant agent comprises the following components in percentage:
anti-phenolic yellowing agent: 10 to 30 percent
pH regulator: 5 to 15 percent of
In the present embodiment, the antioxidant may be selected from one or a mixture of two or more of succinic dihydrazide, glutaric dihydrazide, octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, N '-bis- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexanediamine, and 4,4' -thiobis (6-tert-butyl-3-methylphenol).
The cosolvent is one or more of ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, polyethylene glycol (PEG 400, PEG 600, PEG 800), and polyglycerol (PPG 1000, PPG 2000).
The emulsifier is one or a mixture of more than two of alkyl polyoxyethylene ether with the carbon chain length of C8-C18, alkyl polyoxypropylene polyoxyethylene ether with the carbon chain length of C8-C18, alkylamine polyoxyethylene ether with the carbon chain length of C8-C18, styryl phenol polyoxyethylene ether and fatty acid ester polyoxyethylene ether.
The phenol yellowing inhibitor is one or the mixture of more than two of alkyl sulfonate, alkylbenzene sulfonate, alkyl sulfate salt and alkyl diphenyl ether disulfonate.
The pH regulator is one or more of citric acid, malic acid, glycolic acid, lactic acid, polylactic acid, polyacrylic acid, and polymaleic acid.
A second object of the present invention is to provide a method for preparing the assistant for textile yellowing resistance at high temperature and phenol yellowing resistance described in the first aspect, comprising the following steps:
preparing a high-temperature yellowing resistant agent: mixing antioxidant, cosolvent, emulsifier and water for 30-60 min to obtain liquid;
preparing a phenol yellowing resistant agent: uniformly mixing and stirring the phenol yellowing resistant agent, the pH regulator and water to obtain liquid;
preparing a finishing liquid for resisting high-temperature yellowing and phenol yellowing: is prepared from 40-100g/L of high-temperature yellowing resistant agent and 40-100g/L of phenol yellowing resistant agent, and the pH value is adjusted to 4-6 when in use.
The third purpose of the invention is to provide the application of the auxiliary agent for resisting high-temperature yellowing and phenol yellowing of the textile in the first aspect in chinlon and blended fabrics thereof.
Preferably, the method comprises the following steps:
putting chinlon and blended fabric thereof into finishing liquid with high-temperature yellowing resistance and phenol yellowing resistance, soaking and rolling the chinlon and the blended fabric, wherein the liquid carrying rate is as follows: 60-80%, firstly drying at 100-120 ℃ for 60-120s, and then baking at 150-170 ℃ for 30-90s.
The invention has the beneficial effects that:
the invention provides an assistant for preventing high-temperature yellowing and phenol yellowing of textiles, a preparation method and application thereof, the prepared anti-yellowing agent does not contain adipic Acid Dihydrazide (ADH) components, and the anti-yellowing agent does not adsorb formaldehyde in the environment, so that the problem that the formaldehyde content of finished clothes exceeds the standard in later detection is avoided; the processing method is simple and convenient, is easy to operate, and can endow the fabric with good high-temperature yellowing resistance and phenol yellowing resistance by one-pass rolling and baking process, so that better finished product quality is obtained; the water and energy consumption is saved, the manpower and material resources are reduced, and the cost is reduced; the times of padding and heat setting in the process are reduced, the process water and the processing time can be saved by at least 50%, and the production efficiency is greatly improved.
Drawings
FIG. 1 shows the results of the high temperature yellowing and phenol yellowing resistance treatments for the nylon ammonia whitened knit fabric of example 7;
FIG. 2 is a result of a test of the influence of the pH value of the anti-yellowing mixed finishing liquid on the high-temperature yellowing resistance and the phenol yellowing resistance of the nylon-ammonia whitened knitted fabric in example 7;
FIG. 3 shows the results of the high temperature yellowing resistance and phenol yellowing resistance of the nylon lace in example 8;
FIG. 4 shows the results of the high temperature yellowing resistance and phenol yellowing resistance of the nylon woven tape in example 9.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The embodiment provides a high temperature yellowing resistant agent, which comprises 30% by weight of succinic dihydrazide, 10% by weight of diethylene glycol monobutyl ether and 60% by weight of water;
the preparation method comprises the following steps:
adding 30 wt% of succinic dihydrazide, 10 wt% of diethylene glycol monobutyl ether and 60 wt% of water in a mixer in sequence, then mixing for 30min till uniformity, discharging to obtain a colorless to light yellow liquid product.
Example 2
The embodiment provides a high-temperature yellowing resistant agent, which comprises 20% by weight of N, N' -bis- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine, 5% by weight of diethylene glycol monomethyl ether, 5% by weight of polyethylene glycol 400, 10% by weight of alkyl polyoxyethylene ether (the number of C is 16-18, wherein the number of EO is 15) and 60% by weight of water;
the preparation method comprises the following steps:
adding 20 weight percent of N, N' -bis- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylene diamine, 5 weight percent of diethylene glycol monomethyl ether, 5 weight percent of polyethylene glycol 400, 10 weight percent of alkyl polyoxyethylene ether and 60 weight percent of water into a mixer in sequence, then mixing for 60min to be uniform, discharging to obtain a light yellow to yellow liquid product.
Example 3
The embodiment provides a high-temperature yellowing resistant agent, which comprises 10 wt% of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, 5 wt% of diethylene glycol monobutyl ether, 10 wt% of alkyl polyoxyethylene ether (the number of C is 12-14, the number of EO is 7), and 75 wt% of water;
the preparation method comprises the following steps:
sequentially adding 10 weight percent of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, 5 weight percent of diethylene glycol monobutyl ether, 10 weight percent of alkyl polyoxyethylene ether and 75 weight percent of water into a mixer, mixing for 60min until the mixture is uniform, and discharging the mixture to obtain a light yellow to yellow liquid product.
Example 4
The embodiment provides an anti-phenol yellowing agent, which comprises 10% of alkylbenzene sulfonate (the number of C is 12), 15% of polymaleic acid and 75% of water by weight;
the preparation method comprises the following steps:
adding 10 wt% of alkylbenzene sulfonate, 15 wt% of polymaleic acid and 75 wt% of water into a mixer in sequence, mixing and stirring uniformly, and discharging to obtain a yellowish to yellow liquid product.
Example 5
The embodiment provides an anti-phenol yellowing agent, which comprises 20% by weight of alkyl sulfonate (the number of C is 13-15), 10% by weight of lactic acid and 70% by weight of water;
the preparation method comprises the following steps:
adding alkyl sulfonate 20 wt%, lactic acid 10 wt% and water 70 wt% successively into a mixer, mixing and stirring homogeneously, and discharging to obtain yellowish or yellowish liquid product.
Example 6
This example provides an anti-phenol yellowing agent, comprising 30% by weight of alkyl diphenyl oxide disulfonate (C number 12), 6% by weight of glycolic acid, 64% by weight of water;
the preparation method comprises the following steps:
adding 30 weight percent of alkyl diphenyl ether disulfonate, 6 weight percent of glycolic acid and 64 weight percent of water into a mixer in sequence, mixing and stirring uniformly, and discharging to obtain a light yellow to yellow liquid product.
Example 7
The embodiment provides an assistant for high-temperature yellowing resistance and phenol yellowing resistance of a polyamide-ammonia whitened knitted fabric and a preparation method thereof, wherein a finishing liquid for high-temperature yellowing resistance and phenol yellowing resistance is prepared by adopting 40g/L of the high-temperature yellowing resistance agent described in embodiment 1 and 100g/L of the phenol yellowing resistance agent described in embodiment 4, and the pH value of the finishing liquid is adjusted to 4-6 by using polymaleic acid.
The nylon ammonia whitening knitted fabric is placed into finishing liquid for resisting high-temperature yellowing and phenol yellowing, the nylon ammonia whitening knitted fabric is soaked and rolled one by one (the liquid carrying rate is 60-80%), dried for 60-120s at 100-120 ℃, and then baked for 30-90s at 150-170 ℃, so that a fabric sample treated for resisting high-temperature yellowing and phenol yellowing is obtained.
In order to test the high-temperature yellow resistance and phenol yellowing resistance of the finishing liquid, a brocade ammonia whitening knit fabric sample which is not subjected to anti-yellowing treatment is taken as a blank control sample, wherein the high-temperature yellowing performance test method comprises the following steps: pressing at 190 ℃ for 200s; the phenol yellowing resistance is tested according to the international standard ISO 105 X18:2007 test for testing the yellowing fastness of textiles by phenol, the test result is shown in figure 1. As can be seen from the data in fig. 1, the whitening effect of the polyamide-ammonia whitened knitted fabric treated by the high-temperature-yellowing-resistant and phenol-yellowing-resistant agent provided in this embodiment is significantly higher than that of the polyamide-ammonia whitened knitted fabric which is not treated by the yellowing-resistant agent, and almost no yellowing occurs.
Meanwhile, in order to test the influence of the pH value of the finishing liquid on the high-temperature yellowing resistance and the phenol yellowing resistance of the nylon-ammonia knitted fabric, different pH values are selected for testing, and the results are shown in fig. 2, it can be seen that when the pH value is low, the high-temperature yellowing resistance effect is greatly influenced, and when the pH value is high, the phenol yellowing resistance effect is greatly influenced, so that the pH value of 4-6 is the optimal pH value of the finishing liquid.
Example 8
The embodiment provides an assistant for high-temperature yellowing resistance and phenol yellowing resistance of nylon lace and a preparation method thereof, and the assistant is prepared from 80g/L of the high-temperature yellowing resistance agent provided in embodiment 3 and 80g/L of the phenol yellowing resistance agent provided in embodiment 6, and lactic acid is used for adjusting the pH value of the finishing liquid to 4-6.
Putting the nylon lace into the high-temperature yellowing resistant and phenol yellowing resistant finishing liquid, soaking and rolling the nylon lace (the liquid carrying rate is 60-70%), drying the nylon lace for 60-120s at 100-120 ℃, and then baking the nylon lace for 30-90s at 150-160 ℃ to obtain the nylon lace sample after high-temperature yellowing resistant and phenol yellowing resistant treatment.
Taking a polyamide fabric tape sample which is not subjected to anti-yellowing treatment as a blank control sample, and comparing the high-temperature yellowing resistance and the phenol yellowing resistance of the polyamide fabric tape sample subjected to anti-high-temperature yellowing treatment with those of a polyamide fabric tape sample subjected to anti-phenol yellowing treatment, wherein the high-temperature yellowing performance test method comprises the following steps: pressing at 190 ℃ for 45s; the phenol yellowing resistance is tested according to the international standard ISO 105 X18:2007 test for testing the yellowing fastness of textiles with phenol, as shown in FIG. 3.
As can be seen from the data given in the figure, the nylon lace braid sample treated by the assistant for resisting high-temperature yellowing and phenol yellowing in the embodiment undergoes high-temperature yellowing and phenol yellowing, and is not substantially changed, and compared with a nylon lace without anti-yellowing treatment, the anti-yellowing effect is significantly improved.
Example 9
The embodiment provides an assistant for high-temperature yellowing resistance and phenol yellowing resistance of a nylon woven tape and a preparation method thereof, and the assistant is prepared from 100g/L of the high-temperature yellowing resistance agent provided in the embodiment 3 and 40g/L of the phenol yellowing resistance agent provided in the embodiment 6.
Adding blue or pink chinlon mesh belt into the finishing liquid for resisting high-temperature yellowing and phenol yellowing, soaking and rolling the mixture (the belt liquid rate is 60-70%), drying the mixture at 100-120 ℃ for 60-120s, and baking the mixture at 160-180 ℃ for 30-90s.
Taking a spandex ribbon sample which is not subjected to anti-yellowing treatment as a blank control sample, and comparing the high-temperature yellowing resistance and the phenol yellowing resistance of the high-temperature yellowing resistance and phenol yellowing resistance of a chinlon ribbon sample subjected to anti-yellowing treatment, wherein the high-temperature yellowing resistance test method comprises the following steps: pressing at 180 ℃ for 120s; the phenol yellowing resistance is tested according to the international standard ISO 105 X18:2007 test for testing the yellowing fastness of textiles with phenol, the result is shown in FIG. 4.
As can be seen from the description in fig. 4, after the high-temperature yellowing resistance and phenol yellowing resistance treatment are performed on the yellow or pink nylon woven tape, the high-temperature yellowing effect is not much different from that of the nylon woven tape without the high-temperature yellowing resistance treatment, but the high-temperature yellowing resistance and phenol yellowing resistance of the nylon woven tape are much better than that of the nylon woven tape without the high-temperature yellowing resistance treatment.
By adopting the technical scheme disclosed by the invention, the following beneficial effects are obtained:
the invention provides an assistant for preventing high-temperature yellowing and phenol yellowing of textiles, a preparation method and application thereof, the prepared anti-yellowing agent does not contain adipic Acid Dihydrazide (ADH) components, and the anti-yellowing agent does not adsorb formaldehyde in the environment, so that the problem that the formaldehyde content of finished clothes exceeds the standard in later detection is avoided; the processing method is simple and convenient, is easy to operate, and can endow the fabric with good high-temperature yellowing resistance and phenol yellowing resistance by one-pass rolling and baking process, so that better finished product quality is obtained; the water and energy consumption is saved, the manpower and material resources are reduced, and the cost is reduced; the times of padding and heat setting in the process are reduced, the process water consumption and the processing time can be saved by at least 50%, and the production efficiency is greatly improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements should also be considered within the scope of the present invention.
Claims (8)
1. The auxiliary for textile fabric high-temperature yellowing resistance and phenol yellowing resistance is characterized by being prepared from a high-temperature yellowing resistance agent and a phenol yellowing resistance agent, wherein the dosage of the high-temperature yellowing resistance agent is 40-100g/L, the dosage of the phenol yellowing resistance agent is 40-100g/L, and the application pH value is 4-6;
the high-temperature yellowing resistant agent comprises the following components in percentage:
antioxidant: 10 to 30 percent
Cosolvent: 5 to 20 percent of
Emulsifier: 0 to 10 percent
The balance of water;
the phenol yellowing resistant agent comprises the following components in percentage:
anti-phenolic yellowing agent: 10 to 30 percent
pH regulator: 5 to 15 percent of
The balance of water.
2. The assistant for textile fabric yellowing resistance at high temperature and phenol yellowing resistance according to claim 1, wherein the antioxidant is one or a mixture of two or more of succinic dihydrazide, glutaric dihydrazide, octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, N '-bis- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexanediamine, and 4,4' -thiobis (6-tert-butyl-3-methylphenol).
3. The assistant for textile high-temperature yellowing resistance and phenol yellowing resistance according to claim 1, wherein the cosolvent is one or a mixture of more than two of ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, polyethylene glycol and polyglycerol.
4. The assistant for textile high-temperature yellowing resistance and phenol yellowing resistance according to claim 1, wherein the emulsifier is one or a mixture of two or more of alkyl polyoxyethylene ether with a carbon chain length of C8-C18, alkyl polyoxypropylene polyoxyethylene ether with a carbon chain length of C8-C18, alkylamine polyoxyethylene ether with a carbon chain length of C8-C18, styrylphenol polyoxyethylene ether and fatty acid ester polyoxyethylene ether.
5. The assistant for textile high-temperature yellowing resistance and phenolic yellowing resistance according to claim 1, wherein the phenolic yellowing resistance agent is one or a mixture of more than two of alkyl sulfonate, alkylbenzene sulfonate, alkyl sulfate salt and alkyl diphenyl ether disulfonate; the pH regulator is one or more of citric acid, malic acid, glycolic acid, lactic acid, polylactic acid, polyacrylic acid, and polymaleic acid.
6. A method for preparing the assistant for textile fabric yellowing resistance at high temperature and phenol yellowing resistance according to any one of claims 1 to 5, which comprises the following steps:
preparing a high-temperature yellowing resistant agent: mixing antioxidant, cosolvent, emulsifier and water for 30-60 min to obtain liquid;
preparing a phenol yellowing resistant agent: uniformly mixing and stirring the phenol yellowing resisting agent, the pH regulator and water to obtain liquid;
preparing a finishing liquid for resisting high-temperature yellowing and phenol yellowing: is prepared from 40-100g/L of high-temperature yellowing resistant agent and phenol yellowing resistant agent, and the pH value is adjusted to 4-6.
7. The use of the assistant for textile fabric yellowing resistance at high temperature and phenol yellowing resistance according to any one of claims 1 to 5 in chinlon and blended fabrics thereof.
8. The application of the assistant for resisting high-temperature yellowing and phenol yellowing of textiles according to claim 7 in chinlon and blended fabrics thereof is characterized by comprising the following steps:
putting chinlon and blended fabric thereof into finishing liquid with high-temperature yellowing resistance and phenol yellowing resistance, soaking and rolling once, and carrying out liquid ratio: 60-80%, baking at 100-120 deg.C for 60-120s, and baking at 150-170 deg.C for 30-90s.
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