Terylene and blended fabric finishing agent as well as preparation method and application thereof

Abstract

The invention discloses a polyester and blended fabric finishing agent as well as a preparation method and application thereof. The invention belongs to the field of polymer textile materials. The problems that in the prior art, chemical methods for treating polyester and blended fabrics thereof are prone to discoloration, poor in strength and poor in hand feeling, and chemical reagents are prone to polluting the environment are solved. The prepared polyester and blended fabric finishing agent is a sericin / bio-enzyme cross-linked blended solution, does not contain irritant chemical reagents, and is friendly to human bodies and environment. The prepared finishing agent has an anti-fuzzing and anti-pilling effect on polyester and double-component or multi-component blended fabrics of polyester, cotton, viscose, flax, acrylic fibers, nylon and modal. The anti-fuzzing and anti-pilling finishing method for the polyester and the blended fabric, provided by the invention, is simple in process route, low in energy consumption, green and mild in reaction condition, free from environmental pollution, capable of avoiding side effects of excessive chemical reagents on human bodies and skins, and beneficial to industrial popularization and application.

Description

Technical Field

[0001] The invention belongs to the field of polymer textile materials, and specifically relates to a polyester and blended fabric finishing agent and a preparation method and application thereof. Background Art

[0002] During the wearing and use of fabrics, pilling will occur due to the properties of the fiber itself and the external friction. This problem occurs on both natural fiber and chemical fiber fabrics, and the pilling phenomenon is more obvious on chemical fiber fabrics, especially polyester and its blended fabrics. Pilling not only affects the appearance of the fabric, but also reduces its wearing performance, such as feel and comfort.

[0003] In response to the pilling problem of polyester and its blended fabrics, a variety of anti-pilling finishing technologies have been developed, including chemical, physical, and biological methods. The chemical method mainly uses organic amines or inorganic strong alkalis to corrode polyester to reduce fiber strength, thereby reducing pilling. However, this method is not easy to control and is likely to affect the performance of the fabric itself. There is also the use of resin bonding to point bond the fibers to limit their movement to achieve the purpose of reducing pilling. When used, the resin will cross-link to form a film on the fiber surface, so that the fiber surface is coated with a wear-resistant film, which reduces fiber slippage and reduces pilling. However, fabrics treated with resin have problems such as discoloration, poor strength, and poor feel. In addition, the chemicals used in the chemical treatment process will pollute the environment. Physical treatment methods usually require more complex processes and equipment, are more difficult to operate, and have higher costs. Physical treatment will also affect the appearance and feel of the fabric, making the fabric too stiff and dull. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art that polyester and its blended fabrics are prone to discoloration, poor strength, poor hand feel, and chemical reagents are prone to environmental pollution when treated by chemical methods. The present invention provides a polyester and blended fabric finishing agent and its preparation method and application.

[0005] The technical solution of the present invention is as follows:

[0006] One of the purposes of the present invention is to provide a method for preparing a polyester and blended fabric finishing agent, the method comprising:

[0007] S1: boiling washed raw silk or silkworm cocoons in deionized water, filtering, and concentrating to obtain a sericin aqueous solution; or dissolving sericin powder in deionized water to prepare a sericin aqueous solution;

[0008] S2: adding biological enzyme to the sericin aqueous solution obtained in S1, stirring to obtain a mixed solution, adjusting the pH of the mixed solution to 5-7, adding calcium chloride powder, freezing, and melting to obtain a polyester and blended fabric finishing agent.

[0009] It is further defined that the boiling time in S1 is 1 to 4 hours, the concentration temperature is 60 to 80° C., and the concentration of the sericin aqueous solution is 4 to 12 wt %.

[0010] It is further defined that the solution pH in S2 is adjusted with 0.1 mol / L morpholine-ethanesulfonic acid, the calcium chloride concentration is 0.4 to 1.2 wt %, the freezing temperature is -80 to -20°C, the freezing time is 12 to 24 h, and the melting temperature is 30 to 50°C.

[0011] It is further defined that the S2 biological enzyme is tyrosinase, transglutaminase or lysine oxidase, and the biological enzyme activity concentration is 1 to 15 U / L.

[0012] The second object of the present invention is to provide a polyester and blended fabric finishing agent, which is prepared by the above-mentioned preparation method.

[0013] The third object of the present invention is to provide an application of the above polyester and blended fabric finishing agent in the anti-pilling of polyester and blended fabrics.

[0014] A fourth object of the present invention is to provide a method for anti-pilling finishing of polyester and blended fabrics, wherein:

[0015] S1: Wash the polyester fabric or blended fabric with a pH 5.5-7.5 detergent and dry it;

[0016] S2: The polyester fabric or polyester blended fabric dried in S1 is immersed in the above polyester or blended fabric finishing agent, washed, and dried.

[0017] It is further defined that the blended fabric in S1 is a blend of at least one of cotton, viscose, linen, acrylic, nylon and modal with polyester.

[0018] It is further defined that the bath ratio of the polyester fabric or polyester blended fabric to the finishing agent in S2 is 1-200 mg / mL.

[0019] It is further defined that the immersion temperature in S2 is 45-55°C, the immersion time is 1-3 hours, and the drying temperature is 50-80°C.

[0020] Compared with the prior art, the specific advantages of the present invention are as follows:

[0021] (1) The polyester and blended fabric finishing agent prepared by the present invention is a sericin / biological enzyme cross-linked blend solution, which does not add irritating chemical reagents and is friendly to the human body and the environment. Sericin is abundant in source, is a mild, skin-friendly natural protein, and has suitable adhesiveness. In the prior art, the present invention is used as a part of a chemical finishing auxiliary agent, mixed with a variety of chemical reagents, which not only makes it difficult to exert the excellent performance of sericin, but also other added chemical reagents will have negative effects on the environment and the human body.

[0022] (2) The polyester and blended fabric finishing agent prepared by the present invention has an anti-pilling effect on polyester and two-component or multi-component blended fabrics of polyester and cotton, viscose, flax, acrylic, nylon and modal, and is not limited to the fabric structure, density, gram weight, width, etc., and can play an anti-pilling effect.

[0023] (3) The polyester and blended fabric finishing agent prepared by the present invention uses mild biological enzymes to physically adhere and chemically cross-link pure sericin to the surface of polyester and its blended fabrics, which can not only effectively consolidate short fibers and achieve the purpose of anti-pilling, but also give the fabrics the beneficial properties of hydrophilicity and skin-friendliness, and will not change the properties of polyester and blended fabrics themselves, and will not affect their softness, feel and color. Tyrosinase is widely present in microorganisms, animals, plants and humans. It is a copper-containing metal enzyme that can catalyze the oxidation reaction of tyrosine residues in sericin to form o-benzoquinone. O-benzoquinone then undergoes intermolecular and intramolecular cross-linking reactions with free amino groups in sericin to form new covalent bonds, thereby improving the water resistance of sericin. Glutamine transaminase is a natural enzyme widely present in many organisms. It has the advantages of being green, environmentally friendly, safe and healthy. Glutamine transaminase has strong adhesive force and can catalyze the formation of stable covalent bonds between sericin macromolecules. Lysine oxidase mainly comes from a variety of organisms, including microorganisms, animals and plants. Lysine oxidase catalyzes the oxidative deamination of the ε-amino group of lysine or hydroxylysine on sericin to form an aldehyde group, which then reacts with other amino acid residues to form a stable covalent cross-linked structure. The above-mentioned biological enzymes can effectively and stably finish sericin onto polyester and blended fabrics, achieving a long-lasting anti-pilling effect.

[0024] (4) The anti-pilling finishing method for polyester and blended fabrics provided by the present invention has a simple process route, low energy consumption, green and mild reaction conditions, will not cause pollution to the environment, and also avoids the side effects of excessive chemical reagents on the human body and skin, and can be produced on a large scale industrially. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a flow chart of the anti-pilling finishing method for polyester and blended fabrics;

[0026] Figure 2 Figure a is the unfinished warp direction picture of the polyester fabric in Example 1. Figure 2 Figure b is the unfinished weft direction picture of the polyester fabric in Example 1. Figure 2 Figure c is a warp direction picture of the polyester fabric in Example 1. Figure 2 d is a weft-direction picture of the polyester fabric finishing in Example 1;

[0027] Figure 3 a is the unfinished warp direction picture of polyester / viscose blended knitted fabric in Example 2, Figure 3 b is the unfinished weft direction picture of polyester / viscose blended knitted fabric in Example 2, Figure 3 Middle c is the warp direction picture of the polyester / viscose blended knitted fabric finishing in Example 2, Figure 3 Figure d in the middle is a weft direction picture of the finishing of polyester / viscose blended knitted fabric in Example 2. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] When equivalent, concentration or other value or parameter is represented by the range limited by range, preferred range or a series of upper preferred value and lower preferred value, this should be understood as specifically disclosing all ranges formed by any pairing of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether the scope is disclosed separately. For example, when disclosing range "1 to 5", described range should be interpreted as including range "1 to 4", "1 to 3", "1 to 2", "1 to 2 and 4 to 5", "1 to 3 and 5" etc. When numerical range is described in this article, unless otherwise stated, the scope is intended to include its end value and all integers and fractions within the scope. In the present application specification and claims, range limitation can be combined and / or interchanged, if these ranges are not otherwise stated, include all sub-ranges contained therein.

[0030] The experimental methods used in the following examples are conventional methods unless otherwise specified. The materials, reagents, methods and instruments used are conventional materials, reagents, methods and instruments in the art unless otherwise specified, and can be obtained through commercial channels by those skilled in the art.

[0031] Embodiment 1:

[0032] Preparation of polyester and blended fabric finishing agents:

[0033] Weigh 100g of raw silk from mulberry silk, cut it into short fibers with a length of 1 to 5cm, wash it in 5L of deionized water at room temperature, change the water for washing 3 times, then add the washed raw silk into 1L of boiling deionized water, boil it for 2h, filter out the degummed silk fibers with gauze to obtain a sericin pretreatment solution, place it in an oven at 80℃ for concentration for 6h, measure the concentration of the obtained sericin solution to be 6% by drying and weighing, dilute it to 4% with deionized water to obtain a sericin solution;

[0034] Add glutamine aminotransferase powder to the sericin solution to make its active concentration 1U / L, adjust the pH to 5.5 with 0.1mol / L morpholine-ethanesulfonic acid, add calcium chloride powder to make its final concentration 1.2wt%, move to a -20℃ refrigerator and freeze for 12h, take out and place in a 37℃ oven to melt, to obtain a polyester and blended fabric finishing agent.

[0035] Anti-pilling finishing methods for polyester and blended fabrics:

[0036] Take the polyester fabric and cut it into two 15cm×15cm squares. The fabric structure is plain weave and the weight is 25mg / cm 2 The polyester fabric was first washed with neutral soap, dried at 100°C for 10 min, and then immersed in 60 mL of the polyester and blended fabric finishing agent obtained above, at 45°C, reacted for 3 h, and then washed with deionized water at room temperature for 3 times and dried in an oven at 50°C for 2 h.

[0037] Embodiment 2:

[0038] Preparation of polyester and blended fabric finishing agents:

[0039] Weighing sericin powder with a purity of 99% and dissolving it in deionized water to prepare a sericin solution with a concentration of 12%;

[0040] Add tyrosinase powder to the sericin solution to make its active concentration 15U / L, adjust the pH to 6.5 with 0.1mol / L morpholine-ethanesulfonic acid, add calcium chloride powder to make its final concentration 0.4wt%, move to a -80℃ refrigerator and freeze for 24h, take out and place in a 50℃ oven to melt, to obtain a polyester and blended fabric finishing agent.

[0041] Anti-pilling finishing methods for polyester and blended fabrics:

[0042] Take the polyester / viscose blended knitted fabric and cut it into two 15cm×15cm squares. The fabric structure is plain weave and the weight is 20mg / cm 2The polyester / viscose blended knitted fabric was first washed with neutral soap, dried at 100°C for 10 min, and then immersed in 90 mL of the above-obtained polyester and blended fabric finishing agent at 55°C for 1 h. The fabric was then washed three times with room temperature deionized water and dried in an oven at 80°C for 1 h.

[0043] Anti-pilling test:

[0044] The anti-pilling test was performed on Example 1 and Example 2. The anti-pilling grades of polyester and blended fabrics before and after finishing were determined according to the national standard GB / T 4802.3-2008 "Test for pilling properties of textile fabrics Part 3: Pilling box method". The results are shown in Table 1.

[0045] Table 1 Anti-pilling test of Example 1 and Example 2

[0046]

[0047]

[0048] As can be seen from Table 1, the unfinished polyester fabrics in Examples 1 and 2 have serious pilling. In Example 1, the unfinished warp pilling level is level 1, the unfinished weft pilling level is level 2, and after finishing, the warp and weft pilling levels both reach level 5. In Example 2, the unfinished warp pilling level of the polyester / viscose blended fabric is level 2, the unfinished weft pilling level is level 1, and after finishing, the warp and weft pilling levels both reach level 5, indicating that the method of this embodiment can significantly improve the anti-pilling level of polyester and blended fabrics.

[0049] Figure 2 Figure a is the unfinished warp direction picture of the polyester fabric in Example 1. Figure 2 Figure b is the unfinished weft direction picture of the polyester fabric in Example 1. Figure 2 Figure c is a warp direction picture of the polyester fabric in Example 1. Figure 2 Figure d is a weft-direction picture of the polyester fabric in Example 1. Figure 2 We can see that the unfinished polyester fabric has pilling in both the warp and weft directions, while the polyester fabric finished by the present invention has smooth surfaces in both the warp and weft directions, without pilling, which proves that the finishing method of the present invention can significantly improve the anti-pilling grade of polyester and blended fabrics.

[0050] Figure 3 a is the unfinished warp direction picture of polyester / viscose blended knitted fabric in Example 2, Figure 3 b is the unfinished weft direction picture of polyester / viscose blended knitted fabric in Example 2, Figure 3 Middle c is the warp direction picture of the polyester / viscose blended knitted fabric finishing in Example 2, Figure 3D is a weft-direction picture of the polyester / viscose blended knitted fabric finishing in Example 2. Figure 3 We can see that the unfinished warp and weft images of the polyester / viscose blended knitted fabric have pilling phenomena, while the warp and weft images of the polyester / viscose blended knitted fabric finished by the present invention have smooth surfaces without pilling phenomena, which also proves that the finishing method of the present invention can significantly improve the anti-pilling grade of polyester and blended fabrics.

[0051] The above are only preferred specific embodiments of the present invention, which are all different implementations based on the overall concept of the present invention, and the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for preparing a polyester or blended fabric finishing agent, characterized in that: The method: S1: boiling washed raw silk or silkworm cocoons in deionized water, filtering, and concentrating to obtain a sericin aqueous solution; or dissolving sericin powder in deionized water to prepare a sericin aqueous solution; S2: adding biological enzyme to the sericin aqueous solution obtained in S1, stirring to obtain a mixed solution, adjusting the pH of the mixed solution to 5-7, adding calcium chloride powder, freezing, and melting to obtain a polyester and blended fabric finishing agent.

2. The method according to claim 1, characterized in that: In S1, the boiling time is 1 to 4 h, the concentration temperature is 60 to 80° C., and the concentration of the sericin aqueous solution is 4 to 12 wt %.

3. The method according to claim 1, characterized in that In S2, 0.1 mol / L morpholine-ethanesulfonic acid is used to adjust the solution pH, the calcium chloride concentration is 0.4-1.2 wt%, the freezing temperature is -80--20°C, the freezing time is 12-24 h, and the melting temperature is 30-50°C.

4. The method according to claim 1, characterized in that: The S2 biological enzyme is tyrosinase, glutamine transaminase or lysine oxidase, and the biological enzyme activity concentration is 1 to 15 U / L.

5. A finishing agent for polyester and blended fabrics, characterized in that: The finishing agent is prepared by the preparation method according to any one of claims 1 to 4.

6. The use of the polyester and blended fabric finishing agent according to claim 5, characterized in that: The polyester and blended fabric finishing agent is used in the anti-pilling finishing of polyester and blended fabric.

7. A method for anti-pilling finishing of polyester and blended fabrics, characterized in that: The method: S1: Wash the polyester fabric or blended fabric with a pH 5.5-7.5 detergent and dry it; S2: The polyester fabric or polyester blended fabric dried in S1 is immersed in the polyester or blended fabric finishing agent according to claim 5, washed, and dried.

8. The method according to claim 7, characterized in that The blended fabric in S1 is a blend of at least one of cotton, viscose, linen, acrylic, nylon and modal with polyester.

9. The method according to claim 7, characterized in that: The bath ratio of the polyester fabric or polyester blended fabric to the finishing agent in S2 is 1-200 mg / mL.

10. The method according to claim 7, characterized in that In S2, the immersion temperature is 45-55°C, the immersion time is 1-3h, and the drying temperature is 50-80°C.

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