A plant fiber anti-wrinkle finishing agent, anti-wrinkle fabric and a preparation method thereof

Abstract

The application provides a plant fiber anti-wrinkle finishing agent, which comprises 50-80% of a reactive crosslinking agent and 20-50% of a reactive softening agent in percentage by weight. Meanwhile, the application also provides an anti-wrinkle fabric prepared based on the plant fiber anti-wrinkle finishing agent and a preparation method thereof. The plant fiber anti-wrinkle finishing agent provided by the application comprises a reactive flexible crosslinking agent and a reactive softening agent, which are grafted onto the surface and amorphous region of the plant fiber through an electron beam irradiation grafting technology, the crosslinking degree between cellulose molecular chains is improved, and the relative displacement of the molecular chains in the amorphous region of cellulose during washing is weakened, so that a good anti-wrinkle effect can be achieved. The plant fiber anti-wrinkle finishing agent provided by the application is almost 100% completely reacted under electron beam irradiation, and does not need further washing, but can be directly dried, and has the advantages of environmental protection and energy saving.

Description

Technical Field

[0001] This invention relates to the field of textile materials, specifically to a plant fiber anti-wrinkle finishing agent, anti-wrinkle fabric, and a method for preparing the same. Background Technology

[0002] Plant fibers, especially cotton, possess excellent mechanical strength and abrasion resistance, high moisture absorption, and antistatic properties, making them the most important fibers on the market today. However, one of their main drawbacks is wrinkling after washing. This is because plant fibers are primarily composed of cellulose, a linear polymer of a large polysaccharide linked by glycosidic bonds between D-glucose molecules. Cellulose polymer chains are connected intermolecularly by numerous hydroxyl groups and consist of three distinct ordered regions: crystalline, amorphous, and intermediate regions. In the crystalline region, the cellulose chains are tightly aggregated, limiting their flowability and swelling properties. In the amorphous and intermediate regions, the chains are linked by weaker hydrogen bonds. When water enters the amorphous region of cellulose, the fiber swells. This causes the hydrogen bonds between the cellulose chains to break, and the relative displacement between the chains leads to the formation of new hydrogen bonds, resulting in wrinkling of the fabric.

[0003] Currently, formaldehyde-based and non-formaldehyde-based agents are mainly used for wrinkle-resistant finishing of cotton fabrics. Formaldehyde agents have excellent performance in developing wrinkle-resistant cotton fabrics; however, the finishing agents contain small amounts of free formaldehyde, and the treated fabrics may release formaldehyde. Formaldehyde is considered a carcinogen and has been largely phased out in other countries.

[0004] Non-formaldehyde-based reagents currently used include polycarboxylic acid derivatives and other acidic substances, such as 1,2,3,4-butanetetracarboxylic acid, citric acid, succinic acid, and malic acid. These finishing agents require cross-linking reactions with pre-cotton fabric at high temperatures (150–170°C) and in the presence of catalysts such as sodium hypophosphite. This method necessitates post-reaction washing to remove the catalyst and unreacted materials, resulting in high wastewater treatment costs. Furthermore, high-temperature reactions lead to high energy consumption and emissions of volatile organic compounds. Moreover, the mechanical strength of plant fibers decreases under strong acid and high-temperature conditions.

[0005] Therefore, this invention is proposed. Summary of the Invention

[0006] This invention aims to address the problems existing in the prior art by providing a plant and its preparation method, a fiber anti-wrinkle finishing agent, an anti-wrinkle fabric and its preparation method, which uses electron beam irradiation grafting technology to graft onto the surface and amorphous region of plant fibers, thereby increasing the degree of cross-linking between cellulose molecular chains and reducing the relative displacement of cellulose amorphous region molecular chains during washing, thus achieving a good anti-wrinkle effect.

[0007] To achieve the above objectives, the present invention provides a plant fiber anti-wrinkle finishing agent, the finishing agent comprising 50-80% by weight of a reactive crosslinking agent and 20-50% by weight of a reactive softener.

[0008] Preferably or optionally, the reactive crosslinking agent is one or more of 1,6-hexanediol diacrylate, dipropylene glycol diacrylate, polyethylene glycol (400) diacrylate, polyethylene glycol (600) diacrylate, polyethylene glycol (1000) diacrylate, and triethylene glycol diacrylate.

[0009] Preferably or optionally, the reactive softener is one or more of the following: methacryloyloxyethyltrimethylammonium chloride, acryloyloxyethyltrimethylammonium chloride, acryloyloxyethyldimethyldodecylammonium bromide, methacryloyloxyethyldimethyldodecylammonium bromide, acryloyloxyethyldimethylhexadecylammonium bromide, and methacryloyloxyethyldimethylhexadecylammonium bromide.

[0010] On the other hand, the present invention provides a method for preparing an anti-wrinkle fabric, which is carried out according to the following steps:

[0011] (1) The above-mentioned plant fiber anti-wrinkle finishing agent is dispersed in deionized water to obtain a finishing agent dispersion;

[0012] (2) Soak the plant fiber fabric in the finishing agent dispersion, and then squeeze it with a squeezing machine;

[0013] (3) Pre-dry the fabric after rinsing with liquid obtained in step (2);

[0014] (4) The pre-dried fabric obtained in step (3) is subjected to electron beam curing;

[0015] (5) The fabric obtained in step (4) after electron beam curing is dried to obtain an anti-wrinkle fabric product.

[0016] Preferably or optionally, in step (1), the mass concentration of the fiber anti-wrinkle finishing agent in the finishing agent dispersion is 5-20%.

[0017] Preferably or optionally, the soaking time of the fabric in step (2) is 1-5 minutes, and the residual rate after squeezing is 65-100%.

[0018] Preferably or optionally, the pre-drying temperature in step (3) is 70-100℃, the pre-drying time is 1-5 min, and the moisture content of the fabric after pre-drying is 10-50%.

[0019] Preferably or optionally, the radiation dose of electron beam curing in step (4) is 50-100kGy, the voltage is 170-250kV, and the oxygen content in the electron beam curing environment is less than 500ppm. Preferably, the oxygen content in the electron beam curing environment is less than 20ppm.

[0020] Preferably or optionally, the drying temperature in step (5) is 80-120℃ and the drying time is 1-10min.

[0021] Furthermore, the present invention also provides an anti-wrinkle fabric prepared by the above-described preparation method.

[0022] The beneficial technical effects achieved by the present invention through the above technical solution are as follows:

[0023] The plant fiber anti-wrinkle finishing agent provided by this invention comprises a reactive flexible crosslinking agent and a reactive softener. These are grafted onto the surface and amorphous regions of plant fibers using electron beam irradiation grafting technology, increasing the degree of crosslinking between cellulose molecular chains and reducing the relative displacement of cellulose molecular chains in the amorphous regions during washing. Therefore, it achieves excellent anti-wrinkle effects. Furthermore, the plant fiber anti-wrinkle finishing agent provided by this invention reacts almost 100% completely under electron beam irradiation, requiring no further washing and allowing for direct drying, thus offering advantages such as environmental friendliness and energy saving. Detailed Implementation

[0024] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

[0025] Example 1

[0026] This embodiment provides a plant fiber anti-wrinkle finishing agent and an anti-wrinkle fabric.

[0027] Polyethylene glycol (400) diacrylate, dipropylene glycol diacrylate, and methacryloyloxyethyltrimethylammonium chloride were mixed in a mass ratio of 2:2:1 to obtain a plant fiber anti-wrinkle finishing agent.

[0028] Take 20g of plant fiber anti-wrinkle finishing agent, add it to 80g of deionized water, and disperse it using a disperser for 20min to obtain a finishing agent dispersion.

[0029] After soaking the cotton fiber fabric in the finishing agent dispersion for 5 minutes, it was taken out and squeezed with a squeezing machine, with a squeezing rate of 100%.

[0030] Pre-dry at 100℃ for 3 minutes to reduce the moisture content of the fabric to 10%.

[0031] The fabric was cured by electron beam irradiation with a radiation dose of 50 kGy, a voltage of 250 kV, and a nitrogen atmosphere with an oxygen content of 100 ppm.

[0032] After curing, dry at 100℃ for 2 minutes to obtain the wrinkle-resistant fabric product.

[0033] Example 2

[0034] This embodiment provides a plant fiber anti-wrinkle finishing agent and an anti-wrinkle fabric.

[0035] Polyethylene glycol (600) diacrylate and acryloyloxyethyl dimethyl dodecyl ammonium bromide were mixed in a mass ratio of 1:1 to obtain a plant fiber anti-wrinkle finishing agent.

[0036] Take 5g of plant fiber anti-wrinkle finishing agent, add it to 95g of deionized water, and disperse it using a disperser for 20 minutes to obtain a finishing agent dispersion.

[0037] After soaking the cotton fiber fabric in the finishing agent dispersion for 1 minute, it was taken out and squeezed with a squeezing machine, with a residual rate of 65%.

[0038] Pre-dry at 70℃ for 1 minute to reduce the moisture content of the fabric to 50%.

[0039] The fabric was cured by electron beam irradiation with a radiation dose of 100 kGy, a voltage of 250 kV, and a nitrogen atmosphere with an oxygen content of 100 ppm.

[0040] After curing, dry at 120℃ for 1 minute to obtain the wrinkle-resistant fabric product.

[0041] Example 3

[0042] This embodiment provides a plant fiber anti-wrinkle finishing agent and an anti-wrinkle fabric.

[0043] Polyethylene glycol (600) diacrylate, 1,6-hexanediol diacrylate, and acryloyloxyethyltrimethylammonium chloride were mixed in a mass ratio of 2:1:2 to obtain a plant fiber anti-wrinkle finishing agent.

[0044] Take 10g of plant fiber anti-wrinkle finishing agent, add it to 40g of deionized water, and disperse it using a disperser for 20min to obtain a finishing agent dispersion.

[0045] After soaking the cotton fiber fabric in the finishing agent dispersion for 5 minutes, it was taken out and squeezed with a squeezing machine, with a residual rate of 90%.

[0046] Pre-dry at 90℃ for 3 minutes to reduce the moisture content of the fabric to 15%.

[0047] The fabric was cured by electron beam irradiation with a radiation dose of 80 kGy, a voltage of 200 kV, and a nitrogen atmosphere with an oxygen content of 10 ppm.

[0048] After curing, dry at 100℃ for 2 minutes to obtain the wrinkle-resistant fabric product.

[0049] Example 4

[0050] This embodiment provides a plant fiber anti-wrinkle finishing agent and an anti-wrinkle fabric.

[0051] Polyethylene glycol (400) diacrylate, polyethylene glycol (1000) diacrylate, and acryloyloxyethyl dimethyl hexadecyl ammonium bromide were mixed in a mass ratio of 3:3:4 to obtain a plant fiber anti-wrinkle finishing agent.

[0052] Take 10g of plant fiber anti-wrinkle finishing agent, add it to 90g of deionized water, and disperse it using a disperser for 20 minutes to obtain the finishing agent dispersion.

[0053] After soaking the cotton fiber fabric in the finishing agent dispersion for 5 minutes, it was taken out and squeezed with a squeezing machine, with a residual rate of 80%.

[0054] Pre-dry at 70℃ for 1 minute to reduce the moisture content of the fabric to 50%.

[0055] The fabric was cured by electron beam irradiation with a radiation dose of 90 kGy, a voltage of 170 kV, and a nitrogen atmosphere with an oxygen content of 50 ppm.

[0056] After curing, dry at 100℃ for 3 minutes to obtain the wrinkle-resistant fabric product.

[0057] Example 5

[0058] This embodiment provides a plant fiber anti-wrinkle finishing agent and an anti-wrinkle fabric.

[0059] Triethylene glycol diacrylate, polyethylene glycol (400) diacrylate, acryloyloxyethyl trimethylammonium chloride, and acryloyloxyethyl dimethyl hexadecyl ammonium bromide were mixed in a mass ratio of 1:9:3:2 to obtain a plant fiber anti-wrinkle finishing agent.

[0060] Take 15g of plant fiber anti-wrinkle finishing agent, add it to 90g of deionized water, and disperse it using a disperser for 20 minutes to obtain a finishing agent dispersion.

[0061] After soaking the cotton fiber fabric in the finishing agent dispersion for 3 minutes, it was taken out and squeezed with a squeezing machine, with a residual rate of 80%.

[0062] Pre-dry at 90℃ for 3 minutes to reduce the moisture content of the fabric to 30%.

[0063] The fabric was cured by electron beam irradiation with a radiation dose of 50 kGy, a voltage of 200 kV, and a nitrogen atmosphere with an oxygen content of 100 ppm.

[0064] After curing, dry at 100℃ for 3 minutes to obtain the wrinkle-resistant fabric product.

[0065] Comparative Example 1

[0066] This comparative example provides a plant fiber anti-wrinkle finishing agent and an anti-wrinkle fabric.

[0067] Polyethylene glycol (400) diacrylate, polyethylene glycol (1000) diacrylate, and acryloyloxyethyl dimethyl hexadecyl ammonium bromide were mixed in a mass ratio of 3:3:4 to obtain a plant fiber anti-wrinkle finishing agent.

[0068] Take 10g of plant fiber anti-wrinkle finishing agent, add it to 90g of deionized water, and disperse it using a disperser for 20 minutes to obtain the finishing agent dispersion.

[0069] After soaking the cotton fiber fabric in the finishing agent dispersion for 5 minutes, it was taken out and squeezed with a squeezing machine, with a residual rate of 80%.

[0070] Pre-dry at 100℃ for 5 minutes to reduce the moisture content of the fabric to 0%.

[0071] The fabric was cured by electron beam irradiation with a radiation dose of 90 kGy, a voltage of 170 kV, and a nitrogen atmosphere with an oxygen content of 50 ppm.

[0072] After curing, dry at 100℃ for 3 minutes to obtain the wrinkle-resistant fabric product.

[0073] Comparative Example 2

[0074] This comparative example provides a plant fiber anti-wrinkle finishing agent and an anti-wrinkle fabric.

[0075] Polyethylene glycol (600) diacrylate and acryloyloxyethyl dimethyl dodecyl ammonium bromide were mixed at a mass ratio of 2:8 to obtain a plant fiber anti-wrinkle finishing agent.

[0076] Take 10g of plant fiber anti-wrinkle finishing agent, add it to 90g of deionized water, and disperse it using a disperser for 20 minutes to obtain the finishing agent dispersion.

[0077] After soaking the cotton fiber fabric in the finishing agent dispersion for 1 minute, it was taken out and squeezed with a squeezing machine, with a residual rate of 65%.

[0078] Pre-dry at 70℃ for 1 minute to reduce the moisture content of the fabric to 50%.

[0079] The fabric was cured by electron beam irradiation with a radiation dose of 100 kGy, a voltage of 250 kV, and a nitrogen atmosphere with an oxygen content of 100 ppm.

[0080] After curing, dry at 120℃ for 1 minute to obtain the wrinkle-resistant fabric product.

[0081] Comparative Example 3

[0082] This comparative example provides a plant fiber anti-wrinkle finishing agent and an anti-wrinkle fabric.

[0083] Polyethylene glycol (600) diacrylate and acryloyloxyethyl dimethyl dodecyl ammonium bromide were mixed in a mass ratio of 1:1 to obtain a plant fiber anti-wrinkle finishing agent.

[0084] Take 2g of plant fiber anti-wrinkle finishing agent, add it to 98g of deionized water, and disperse it using a disperser for 20 minutes to obtain the finishing agent dispersion.

[0085] After soaking the cotton fiber fabric in the finishing agent dispersion for 1 minute, it was taken out and squeezed with a squeezing machine, with a residual rate of 65%.

[0086] Pre-dry at 70℃ for 1 minute to reduce the moisture content of the fabric to 50%.

[0087] The fabric was cured by electron beam irradiation with a radiation dose of 100 kGy, a voltage of 250 kV, and a nitrogen atmosphere with an oxygen content of 100 ppm.

[0088] After curing, dry at 120℃ for 1 minute to obtain the wrinkle-resistant fabric product.

[0089] Comparative Example 4

[0090] This comparative example provides a plant fiber anti-wrinkle finishing agent and an anti-wrinkle fabric.

[0091] Polyethylene glycol (600) diacrylate and acryloyloxyethyl dimethyl dodecyl ammonium bromide were mixed in a mass ratio of 1:1 to obtain a plant fiber anti-wrinkle finishing agent.

[0092] Take 5g of plant fiber anti-wrinkle finishing agent, add it to 95g of deionized water, and disperse it using a disperser for 20 minutes to obtain the finishing agent dispersion.

[0093] After soaking the cotton fiber fabric in the finishing agent dispersion for 1 minute, it was taken out and squeezed with a squeezing machine, with a residual rate of 65%.

[0094] Pre-dry at 70℃ for 1 minute to reduce the moisture content of the fabric to 50%.

[0095] The fabric was cured by electron beam irradiation with a radiation dose of 30 kGy, a voltage of 250 kV, and a nitrogen atmosphere with an oxygen content of 100 ppm.

[0096] After curing, dry at 120℃ for 1 minute to obtain the wrinkle-resistant fabric product.

[0097] Comparative Example 5

[0098] This comparative example provides a plant fiber anti-wrinkle finishing agent and an anti-wrinkle fabric.

[0099] Polyethylene glycol (600) diacrylate and acryloyloxyethyl dimethyl dodecyl ammonium bromide were mixed in a mass ratio of 1:1 to obtain a plant fiber anti-wrinkle finishing agent.

[0100] Take 5g of plant fiber anti-wrinkle finishing agent, add it to 120g of deionized water, and disperse it using a disperser for 20 minutes to obtain the finishing agent dispersion.

[0101] After soaking the cotton fiber fabric in the finishing agent dispersion for 1 minute, it was taken out and squeezed with a squeezing machine, with a squeezing rate of 110%.

[0102] Pre-dry at 70℃ for 1 minute to reduce the moisture content of the fabric to 50%.

[0103] The fabric was cured by electron beam irradiation with a radiation dose of 100 kGy, a voltage of 250 kV, and a nitrogen atmosphere with an oxygen content of 100 ppm.

[0104] After curing, dry at 120℃ for 1 minute to obtain the wrinkle-resistant fabric product.

[0105] Comparative Example 6

[0106] This comparative example provides a plant fiber anti-wrinkle finishing agent and an anti-wrinkle fabric.

[0107] Polyethylene glycol (600) diacrylate and acryloyloxyethyl dimethyl dodecyl ammonium bromide were mixed in a mass ratio of 1:1 to obtain a plant fiber anti-wrinkle finishing agent.

[0108] Take 5g of plant fiber anti-wrinkle finishing agent, add it to 95g of deionized water, and disperse it using a disperser for 20 minutes to obtain the finishing agent dispersion.

[0109] After soaking the cotton fiber fabric in the finishing agent dispersion for 1 minute, it was taken out and squeezed with a squeezing machine, with a residual rate of 65%.

[0110] Pre-dry at 70℃ for 1 minute to reduce the moisture content of the fabric to 50%.

[0111] The fabric was cured by electron beam irradiation with a radiation dose of 100 kGy, a voltage of 250 kV, and a nitrogen atmosphere with an oxygen content of 1500 ppm.

[0112] After curing, dry at 120℃ for 1 minute to obtain the wrinkle-resistant fabric product.

[0113] Effect Example

[0114] The wrinkle recovery properties of the anti-wrinkle fabric products prepared in Examples 1-5 and Comparative Examples 1-6 were determined using the vertical method described in GB / T 3819-1997.

[0115] The results of the measurements are shown in Table 1.

[0116] Table 1. Results of Crease Recovery Performance Test for Wrinkle-Resistant Fabrics

[0117] Wet crease recovery angle / ° Control group: blank cotton fiber fabric 143 Example 1 263 Example 2 245 Example 3 241 Example 4 252 Example 5 244 Comparative Example 1 208 Comparative Example 2 176 Comparative Example 3 185 Comparative Example 4 164 Comparative Example 5 159 Comparative Example 6 227

[0118] As can be seen from Table 1, the plant fiber anti-wrinkle finishing agent provided by the present invention and the anti-wrinkle fabrics prepared based thereon have good anti-wrinkle properties.

[0119] Meanwhile, by optimizing the ratio of reactive crosslinking agent and reactive softener in the plant fiber anti-wrinkle finishing agent, the concentration of plant fiber anti-wrinkle finishing agent in the finishing agent dispersion, the fabric roll-off rate, the electron beam curing dose, and the oxygen content in the curing atmosphere, the present invention enables the anti-wrinkle fabric as the product to have optimal anti-wrinkle performance.

[0120] The plant fiber anti-wrinkle finishing agent provided by this invention includes a reactive flexible crosslinking agent and a reactive softener. These are grafted onto the surface and amorphous regions of plant fibers using electron beam irradiation grafting technology, increasing the crosslinking degree between cellulose molecular chains and reducing the relative displacement of cellulose molecular chains in the amorphous regions during washing, thus achieving excellent anti-wrinkle effects. Furthermore, the plant fiber anti-wrinkle finishing agent provided by this invention reacts almost 100% completely under electron beam irradiation, requiring no further washing and allowing for direct drying. This avoids the drawbacks of existing processes that use formaldehyde-based reagents or organic acids for anti-wrinkle finishing, such as releasing formaldehyde and harming the wearer's health, reducing the mechanical properties of the fabric, high energy consumption, and generating waste gas and waste liquid during the anti-wrinkle finishing process. This method is more environmentally friendly and energy-saving.

[0121] The preferred embodiments of the present invention have been described in detail above; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various technical features in any other suitable manner. These simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A process for the production of a wrinkle resistant fabric, characterized in that, The following steps are taken: (1) Disperse the plant fiber anti-wrinkle finishing agent in deionized water to obtain a finishing agent dispersion; wherein the finishing agent comprises 50-80% by weight of a reactive crosslinking agent and 20-50% of a reactive softening agent; the mass concentration of the plant fiber anti-wrinkle finishing agent in the finishing agent dispersion is 5-20%; wherein the reactive crosslinking agent is one or more of 1,6-hexanediol diacrylate, dipropylene glycol diacrylate, polyethylene glycol (400) diacrylate, polyethylene glycol (600) diacrylate, polyethylene glycol (1000) diacrylate, and triethylene glycol diacrylate; the reactive softening agent is one or more of methacryloyloxyethyl trimethyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride, acryloyloxyethyldimethyl dodecyl ammonium bromide, methacryloyloxyethyl dimethyl dodecyl ammonium bromide, acryloyloxyethyl dimethyl hexadecyl ammonium bromide, and methacryloyloxyethyl dimethyl hexadecyl ammonium bromide; (2) Soak the plant fiber fabric in the finishing agent dispersion for 1-5 min, then apply liquid with a mangle, and the pick-up rate after mangle is 65-100%; (3) Pre-dry the fabric obtained after mangle in step (2); wherein the pre-drying temperature is 70-100°C, the pre-drying time is 1-5 min, and the water content of the fabric after pre-drying is 10-50%; (4) Electron beam curing of the pre-dried fabric obtained in step (3); wherein the radiation dose of electron beam curing is 50-100 kGy, the voltage is 170-250 kV, and the oxygen content in the electron beam curing environment is less than 500 ppm; (5) Dry the fabric after electron beam curing obtained in step (4) to obtain an anti-wrinkle fabric product.

2. The production method according to claim 1, characterized by, The oxygen content in the electron beam curing environment in step (4) is less than 20 ppm.

3. The preparation method according to claim 1, characterized in that, The drying temperature in step (5) is 80-120°C, and the drying time is 1-10 min.

4. A wrinkle resistant fabric characterized in that, Prepared by the preparation method of any one of claims 1-3.