阅读说明：本技术 一种基于无锑涤纶的四面弹面料的染色后处理工艺 (Four-side stretch fabric dyeing post-treatment process based on antimony-free polyester ) 是由 唐俊松 陈浩 吴学芬 金国平 于 2021-06-30 设计创作，主要内容包括：本发明公开了一种基于无锑涤纶的四面弹面料的染色后处理工艺,其包括依次进行的高温烘干工艺、皂洗工艺和低温定型工艺；其中的低温定型工艺采用吸湿排汗整理剂对皂洗后的织物进行定型处理,吸湿排汗整理剂包括吸湿排汗剂HSD和柠檬酸；所述皂洗工艺采用的皂洗助剂包括雅可赛RC和酸度滑移剂VS。本发明基于无锑涤纶的四面弹面料的特性,通过设计适当的后处理工艺,不仅可以保证织物具有较好的尺寸稳定性以及较好的色牢度,而且可以保证四面弹面料经纬向的弹力保持一致,并还可赋予织物较好的吸湿排汗功能。(The invention discloses a four-side stretch fabric dyeing post-treatment process based on antimony-free terylene, which comprises a high-temperature drying process, a soaping process and a low-temperature setting process which are sequentially carried out; the low-temperature shaping process adopts a moisture-absorbing and sweat-discharging finishing agent to carry out shaping treatment on the fabric after soaping, wherein the moisture-absorbing and sweat-discharging finishing agent comprises moisture-absorbing and sweat-discharging agents HSD and citric acid; the soaping aid adopted by the soaping process comprises Jacksack RC and an acidity slipping agent VS. Based on the characteristics of the antimony-free terylene four-side stretch fabric, the invention can ensure that the fabric has better dimensional stability and color fastness by designing a proper post-treatment process, can ensure that the warp-weft elasticity of the four-side stretch fabric is kept consistent, and can endow the fabric with better moisture absorption and sweat releasing functions.)

1. A four-side stretch fabric dyeing post-treatment process based on antimony-free terylene is characterized in that:

the dyeing post-treatment process comprises a high-temperature drying process, a soaping process and a low-temperature setting process which are sequentially carried out; the low-temperature shaping process adopts a moisture-absorbing and sweat-discharging finishing agent to carry out shaping treatment on the fabric after soaping, wherein the moisture-absorbing and sweat-discharging finishing agent comprises moisture-absorbing and sweat-discharging agents HSD and citric acid; the soaping aid adopted by the soaping process comprises Jacksack RC and an acidity slipping agent VS.

2. The dyeing post-treatment process of the antimony-free polyester-based four-side stretch fabric, according to claim 1, is characterized in that: the process conditions of the high-temperature drying process are as follows:

3. the dyeing post-treatment process of the antimony-free polyester-based four-side stretch fabric, according to claim 1, is characterized in that: the soaping process formula is as follows:

jacobsel RC 1.6-2.0g/L,

a slipping agent VS 1.2-1.5g/L,

bath ratio of 1: 10.

4. the dyeing post-treatment process of the antimony-free polyester-based four-side stretch fabric, according to claim 3, is characterized in that: the soaping process comprises the following steps: heating the soaping liquid containing the soaping auxiliary agent to 85 ℃ at the heating rate of 1 ℃/min, carrying out heat preservation and soaping for 20min, then cooling to normal temperature, and carrying out soaping for 10 min.

5. The dyeing post-treatment process of the antimony-free polyester-based four-side stretch fabric, according to claim 1, is characterized in that: the process formula of the low-temperature shaping process is as follows:

40-45g/L of moisture-absorbing and sweat-removing agent HSD,

1-2g/L of citric acid.

6. The dyeing post-treatment process of the antimony-free polyester-based four-side stretch fabric, according to claim 1, is characterized in that: the process conditions of the low-temperature shaping process are as follows:

Technical Field

The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a dyeing post-treatment process of a four-side stretch fabric based on antimony-free terylene.

Background

At present, most of polyester production enterprises at home and abroad still mainly use antimony catalysts. In the antimony catalyst, antimony trioxide, antimony acetate and ethylene glycol antimony are used more, and the antimony catalyst has higher market share and excellent performance. The antimony catalyst can greatly promote the polycondensation reaction in the polyester polycondensation reaction instead of promoting the thermal degradation reaction, and is a good catalyst in the polycondensation process. However, antimony belongs to heavy metal and is harmful to human body, and associated with arsenic, it can cause damage to liver. Because the polyester production with participation of antimony catalysts is homogeneous catalytic reaction, the catalysts can be retained in products, and the antimony removal measures adopted by most chemical fiber enterprises in China have limited effect, so that the processed polyester fibers contain heavy metal antimony; as the polyester fiber is processed by the dyeing and finishing processing factory, the antimony deposited in the fiber and the antimony catalyst are continuously transferred to the surface of the fiber and printing and dyeing wastewater under certain conditions. In the prior printing and dyeing industry, no matter pretreatment or dyeing, a small bath ratio is adopted as much as possible in order to save water, so that the enrichment of heavy metal antimony in waste liquid is further increased, and the danger of heavy metal exceeding standard is also increased.

The polyester catalyst will develop towards the direction of environmental protection, high efficiency, low toxicity and no toxicity. Under the condition of comprehensively considering economic performance, the titanium catalyst is an antimony-free catalyst which is relatively widely applied at present, such as tetrabutyl titanate, isopropyl titanate and the like in the first generation titanium catalyst. Research results show that the catalyst used in the esterification process is low in dosage and has catalytic activity for polycondensation reaction higher than that of SbAc₃And Sb₂O₃And the reaction time is obviously shortened, the characteristic viscosity of the obtained product is increased, and the content of terminal carboxyl groups is increasedAnd decreases. In recent years, a novel titanium catalyst is developed vigorously, a second-generation catalyst product is generated, such as a titanium-silicon composite catalyst, ethylene glycol titanium and the like, the titanium-silicon composite catalyst has good hydrolytic resistance and a good catalytic effect, and the titanium-silicon composite catalyst is simple in structure and low in preparation cost, so that good basic guarantee is provided for the wide preparation of antimony-free polyester fibers.

The antimony-free terylene four-side stretch fabric is a bidirectional stretch woven fabric developed based on an antimony-free terylene production technology, and is produced by weaving terylene-ammonia core spun yarns. The core yarn of the polyester-polyurethane core-spun yarn is spandex fiber, and the bare spandex fiber has good stretching and recovery performance and is a main source of fabric elasticity; the coating yarn is an antimony-free polyester product produced by using an antimony-free catalyst, has multiple classifications of 50D, 75D, 100D, 150D and the like, has certain viscosity during coating, and provides a small amount of elasticity for the fabric. The polyester-spandex core-spun yarn of the antimony-free polyester four-side stretch fabric is in a stretched state in the weaving process, and the width of the grey fabric is shrunk by the elasticity recovery of the stretch yarn after the grey fabric is off the loom. The internal stress of the elastic fabric is completely released through pretreatment processing, the elasticity of spandex filaments is recovered, the fabric is fully contracted, and the fabric has the maximum elasticity and the maximum stretchable width.

The spandex fiber in the antimony-free polyester four-side stretch fabric has the characteristic of easy retraction when being heated, and the ironing shrinkage rate of the spandex fiber is not easy to control in the post-finishing process after dyeing; in addition, generally, in order to obtain stable washing or steam shrinkage, the four-side stretch fabric must be subjected to high-temperature heat setting after being dyed, and brownian motion is aggravated under high-temperature conditions, so that the combination of the dye and the polyester fiber becomes unstable, valence bond breakage is caused, and the color fastness is reduced; therefore, in the process of performing functional after-finishing on the fabric by adopting the traditional after-finishing process, the color fastness of the fabric is easily influenced and reduced.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a dyeing post-treatment process of a four-side stretch fabric based on antimony-free terylene, which is based on the characteristics of the four-side stretch fabric based on antimony-free terylene and designs a proper post-treatment process, so that the fabric can be ensured to have better dimensional stability and color fastness, the elasticity of the four-side stretch fabric in the weft direction can be ensured to be consistent, and the fabric can be endowed with better moisture absorption and sweat releasing functions.

In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:

a four-side stretch fabric dyeing post-treatment process based on antimony-free terylene comprises a high-temperature drying process, a soaping process and a low-temperature setting process which are sequentially carried out; the low-temperature shaping process adopts a moisture absorption and sweat releasing finishing agent to carry out shaping treatment on the soaped fabric, wherein the moisture absorption and sweat releasing finishing agent comprises moisture absorption and sweat releasing agents HSD and citric acid; the soaping aid adopted by the soaping process comprises Jacksack RC and an acidity slipping agent VS.

Further, the process conditions of the high-temperature drying process are as follows:

further, the soaping process formula is as follows:

jacobsel RC 1.6-2.0g/L,

a slipping agent VS 1.2-1.5g/L,

bath ratio of 1: 10.

further, the soaping process comprises the following steps: heating the soaping liquid containing the soaping auxiliary agent to 85 ℃ at the heating speed of 1 ℃/min, carrying out heat preservation and soaping for 20min, then cooling to normal temperature, and carrying out soaping for 10 min.

Further, the process formula of the low-temperature shaping process is as follows:

40-45g/L of moisture-absorbing and sweat-removing agent HSD,

1-2g/L of citric acid.

Further, the process conditions of the low-temperature setting process are as follows:

compared with the prior art, the invention has the following advantages and effects:

according to the invention, the method of firstly drying at high temperature, then soaping and then shaping at low temperature is adopted, so that the dyed spandex fiber is cleaned by adsorbing dye and the surface flooding of the polyester fiber, the influence of brownian motion on the color fastness in the shaping process is reduced, and the fabric is ensured to obtain better color fastness;

the high-temperature drying process can ensure that the four-side stretch fabric has good dimensional stability, and the combination of Jacksack RC and the acidity slipping agent VS in the soaping process can effectively remove disperse dyes attached to the surface of spandex fibers and clean dyes which are not completely reacted on the surface of polyester fibers or are separated out during high-temperature drying, so that the product obtains good color fastness improvement; the soaping process is an acid soaping process, so that the color fastness can be improved, the link that the cloth cover needs to be neutralized by acid due to the fact that the pH value is higher after the traditional alkaline soaping is omitted, and the water vapor consumption is saved; the soap-washed fabric is shaped at relatively low temperature, so that tentering and heat shaping can be supplemented to the shrunk fabric, and the product requirements are met; the large overfeeding is adopted in the shaping process, so that the warp and weft elasticity of the four-side elastic fabric can be kept consistent; the low-temperature setting process adopts a setting temperature lower than a high-temperature drying temperature for setting, so that the reduction of the dyeing fastness can be reduced, and the fabric can obtain better color fastness; the moisture absorption and sweat releasing agent HSD in the low-temperature shaping process is a polysiloxane auxiliary agent, and can endow the fabric with various performances of softness, moisture absorption, sweat releasing, static resistance and the like under an acidic condition, and meanwhile, the fabric has better washing resistance.

Detailed Description

The technical solutions in the present invention will be described clearly and completely with reference to the following specific embodiments, but it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Fabric grey cloth: the fabric is woven by adopting polyester-polyurethane core-spun yarns, wherein the spandex yarns are core yarns, and the cladding yarns are antimony-free polyester yarns produced by adopting an antimony-free catalyst.

The fabric grey cloth is subjected to a pretreatment process and a dyeing process in sequence, and then enters a post-dyeing treatment process stage.

The dyeing post-treatment process comprises a high-temperature drying process, a soaping process and a low-temperature shaping process which are sequentially carried out.

The process conditions of the high-temperature drying process are as follows:

the soaping process formula is as follows:

jacobsel RC is 1.6g/L,

the slip agent VS is 1.2g/L,

bath ratio of 1: 10.

wherein g/L represents the gram number of the mass of the substances contained in 1L of soap lotion; specifically, 1L of soap lotion was prepared by adding water to a constant volume of 1L using 1.6g of Jacobsel RC and 1.2g of slip agent VS.

The soaping process comprises the following steps: heating the soaping liquid containing the soaping auxiliary agent to 85 ℃ at the heating rate of 1 ℃/min, carrying out heat preservation and soaping for 20min, then cooling to normal temperature, and carrying out soaping for 10 min. The soaping process may be carried out in a dye vat.

The process prescription and process conditions of the low-temperature shaping process are as follows:

wherein g/L represents the gram number of the mass of substances contained in 1L of moisture absorption and sweat release finishing liquid; specifically, the 1L moisture absorption and sweat releasing finishing liquid is prepared by adding water to a constant volume of 1L by using 40g moisture absorption and sweat releasing agent HSD and 1g citric acid.

In order to obtain stable washing or steam shrinkage, the four-side elastic fabric needs to be subjected to high-temperature heat setting, and Brownian motion is aggravated under the high-temperature condition, so that the combination of the dye and the polyester fiber becomes unstable, the valence bond is broken, and the color fastness after soaping is reduced. Therefore, the method of firstly drying at high temperature, then soaping and then shaping at low temperature is adopted, the method realizes the cleaning of the dye adsorbed on the spandex fiber and the surface flooding of the polyester fiber, reduces the reduction influence of shaping on the color fastness and ensures that the fabric obtains better color fastness.

Particularly, the high-temperature drying process can ensure that the four-side stretch fabric has good dimensional stability so as to ensure that the fabric surface is kept flat and unchanged after the soaping link, and the warp and weft shrinkage is also in a small range.

The combination of Jacksack RC and the acidity slipping agent VS in the soaping process can effectively remove the disperse dye attached to the surface of the spandex fiber, and simultaneously wash the disperse dye which is not completely reacted on the surface of the polyester fiber or is separated out due to high-temperature drying, so that the product can obtain better color fastness improvement; and the soaping process is an acid soaping process, so that the color fastness can be improved, the link that the cloth cover needs to be neutralized by acid due to the fact that the pH value is higher after the traditional alkaline soaping process is omitted, and the water vapor consumption is reduced.

The temperature of the setting process carried out after soaping is lower than the presetting temperature and the high-temperature drying temperature of the previous working procedure; the low-temperature setting process can supplement tentering and heat setting on the shrunk fabric, meet the product requirements, reduce the reduction of the dyeing fastness and ensure that the fabric obtains better color fastness; the moisture absorption and sweat releasing agent HSD in the low-temperature shaping process is a polysiloxane auxiliary agent, and can endow the fabric with various performances of softness, moisture absorption, sweat releasing, static resistance and the like under an acidic condition, and meanwhile, the fabric has better washing resistance.

Comparative example

Carrying out shaping post-treatment on the antimony-free terylene four-sided stretch fabric which is subjected to the same pretreatment process and dyeing process as the embodiment; in the shaping treatment fluid adopted in the shaping post-treatment process, 1L of the shaping treatment fluid contains 40g of moisture absorption and sweat release HSD and 1g of citric acid;

the process conditions of the shaping post-treatment are as follows:

examples of effects

The antimony-free polyester four-side stretch fabric treated by the post-treatment process of the embodiment of the invention and the antimony-free polyester four-side stretch fabric treated by the sizing post-treatment process of the comparative example are subjected to performance test; the results are shown in Table 1.

Table 1 Performance test results of antimony-free polyester four-sided stretch fabric of examples and comparative examples

As can be seen from Table 1, the antimony-free polyester four-side stretch fabric treated by the dyeing post-treatment process provided by the embodiment of the invention has good color fastness.

The antimony-free polyester four-side stretch fabric treated by the dyeing post-treatment process provided by the embodiment of the invention is subjected to moisture absorption and sweat releasing performance tests, and the test method is as follows in GB/T21655.1-2008 & evaluation part 1 of moisture absorption and quick drying of textiles: according to the single combination test method, the dropping water diffusion time (after 30 times of washing) is 2.1s, the wicking height (after 30 times of absorption) is 183.8mm, and therefore, the antimony-free polyester four-side stretch fabric disclosed by the embodiment of the invention has better moisture absorption and quick drying performance.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications made by the equivalent structures or equivalent processes in the present specification, or directly or indirectly applied to other related technical fields are included in the scope of the present invention.