Multi-performance synergistically modified humanoid hair protein filament and preparation process thereof
Through the preparation process of multi-performance collaborative modification, using strong polar organic solvents and polyphenol cross-linking technology, the shortcomings of wig materials in terms of fidelity, feel and anti-static properties were solved, and a human-like hair protein wire with performance close to that of real human hair was prepared.
Patent Information
- Application Number
- CN202510719434.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2025-08-12
AI Technical Summary
Existing wig materials have shortcomings in terms of fidelity, feel, toughness and antistatic properties, which are difficult to meet the comprehensive performance requirements of high-end wig products. Traditional modification methods often focus on the improvement of a single performance, which may lead to other performance degradation.
The preparation process of multi-performance collaborative modification is adopted, including raw material pretreatment, solvent swelling treatment, polyphenol cross-linking coating and drying straightening and shaping. The fiber structure is recombined with strong polar organic solvents to form a dense cross-linking coating to enhance the gloss, strength and anti-static properties of the fibers.
The prepared human-imitating hair protein filaments have smooth surfaces, softness, strength and toughness are close to that of real hair, and have excellent antistatic properties, which significantly improves the fidelity and comfort of the wig.
Smart Images
Figure CN120465277A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of textile materials and biomass modification, and in particular to a multi-performance synergistically modified human hair protein filament and a preparation process thereof. Background Art
[0002] With the development of society and the improvement of people's living standards, the demand for artificial hair products such as wigs is growing, and their application scenarios are also expanding, covering daily beauty and hairdressing, film and television stage styling, medical diapers and other fields. However, the commonly used wig materials on the market are mainly divided into two categories, both of which have varying degrees of defects and cannot meet the realism and comprehensive performance requirements of high-end wig products.
[0003] On the one hand, although human natural hair as a wig material performs well in terms of gloss, feel, durability, etc., and has incomparable natural beauty and comfort, its source is severely limited by factors such as the growth rate of human hair and the difficulty of collection, resulting in a scarce supply of raw materials and high prices, making it difficult to achieve large-scale production and widespread application.
[0004] On the other hand, although artificial synthetic fibers (such as nylon, polyester, and polyacrylonitrile) can be industrially mass-produced and have advantages such as low cost and easy processing, they are essentially petroleum-based chemical products and have many inherent deficiencies in performance. First, the texture of this type of synthetic fiber is relatively stiff and lacks the softness and toughness of natural hair. The feel when worn is significantly different from that of real human hair, giving people an unnatural feeling. Secondly, its luster is relatively glaring, presenting a highly reflective plastic texture, which is far from the natural, soft, matte silk luster of real human hair under light, greatly affecting the visual realism of the wig. Furthermore, synthetic fibers are very prone to static electricity accumulation in dry environments, causing mutual repulsion and tangling between hair strands. This not only brings inconvenience to the user in combing and wearing, but may also irritate the wearer's skin due to electrostatic discharge, and even pose safety risks in certain special environments.
[0005] Given the limitations of these two traditional wig materials, researchers have begun exploring other potential alternatives. Animal hair fibers (such as wool, yak hair, and horse hair) have gradually attracted attention because they are keratin fibers like human hair, share similarities in chemical composition and molecular structure, and are relatively abundant. Yak hair, in particular, has a similar basic chemical composition and molecular structure to human hair. The fine, soft hair on the yak's abdomen contains almost no melanin, making it structurally closer to human hair. It is considered a highly promising alternative to human hair.
[0006] However, there are still many significant problems with the direct use of natural animal hair fibers in wig products, making it difficult to meet the requirements of high-end wigs for simulated appearance and comprehensive performance. Take yak hair as an example. Its fiber surface is rough, the hair scales are loosely arranged and severely keratinized, resulting in a dull appearance and a rough feel, lacking the delicate, smooth and natural luster of real human hair. At the same time, animal hair fibers have many internal pores and a well-developed medulla, which makes the fiber strength and toughness relatively low. The elasticity and fatigue resistance are also inferior to human hair. It is difficult to withstand daily combing and repeated pulling, and is prone to breakage and deformation. In addition, untreated animal hair has poor hygroscopicity. When used in a dry environment, it is very easy to accumulate static electricity, resulting in static electricity problems similar to synthetic fibers, affecting the comfort and safety of wearing.
[0007] To address these shortcomings, research and exploration have been conducted on single-property modifications of animal fibers. For example, chemical agents or enzymes are used to etch the surface of animal fibers to improve the feel and prevent felting; resin coating is used to enhance the strength and gloss of the fibers; or antistatic agents are introduced to improve the moisture absorption and conductivity of the fibers. However, these traditional modification methods often focus on improving a single property, which may be at the expense of other properties. For example, although chlorination of wool softens the fibers to a certain extent, it leads to a decrease in fiber strength; although resin coating enhances the hardness and gloss of the fibers, it worsens the feel and increases the weight of the fibers; and although the addition of hydrophilic agents increases the moisture regain of the fibers, it may have a negative impact on the strength of the fibers.
[0008] Therefore, the existing technology has not yet effectively addressed the key challenge of how to simultaneously optimize the appearance, mechanical properties, and performance of fibers through synergistic modification methods. To this end, those skilled in the art have proposed a multi-performance synergistically modified human hair protein-like fiber and its preparation process to address the issues raised in the above background art. Summary of the Invention
[0009] In view of the deficiencies in the prior art, the present invention provides a multi-performance synergistically modified human hair protein filament and a preparation process, which solves the problems raised in the above background technology.
[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for preparing multi-performance synergistically modified human hair protein silk, comprising the following steps:
[0011] Raw material pretreatment: Animal hair keratin fiber raw materials are selected, and the animal hair keratin fiber raw materials are one or more of yak hair, wool, and horse hair. They are cleaned and degreased to remove oil and impurities, and then bleached to reduce the original color of the raw materials so that they can be easily given the target color, thereby obtaining clean light-colored fibers;
[0012] Solvent swelling treatment: The pretreated fiber is immersed in a strong polar organic solvent for a certain period of time. The strong polar organic solvent is hexafluoroisopropanol, formic acid or acetic acid, so that the keratin scale structure on the fiber surface swells and reorganizes;
[0013] Polyphenol cross-linking coating: The solvent-treated fiber is immersed in an aqueous solution of a natural polyphenol modifier, such as tannic acid, tannin, or quercetin, to allow the polyphenol to complex with the fiber protein, forming a dense cross-linking coating on the fiber surface;
[0014] Drying, straightening and shaping: The fibers treated with polyphenol cross-linking coating are straightened and dried to solidify at a drying temperature of 50-70°C and a drying time of 2-6 hours to obtain simulated human hair protein fibers with a smooth surface and stable performance.
[0015] Preferably, a method for preparing multi-property synergistically modified human hair protein filaments is characterized in that: in the raw material pretreatment step, cleaning and degreasing use a commercially available industrial hair degreasing agent, ultrasonic cleaning in a 20-40°C water bath for 10-20 minutes, and bleaching treatment uses a hydrogen peroxide solution with a mass concentration of 3%-5% at 50-60°C for 30-60 minutes.
[0016] Preferably, the solvent swelling treatment is carried out for 0.5-2 hours at a temperature ranging from room temperature to 40°C.
[0017] Preferably, the polyphenol cross-linking coating is carried out for 1-3 hours at a temperature ranging from room temperature to 40°C.
[0018] Preferably, after drying, straightening and shaping, the method further includes a step of post-finishing the fibers, wherein the post-finishing includes lightly oiling or using an antistatic spray to further enhance surface conductivity.
[0019] Preferably, the light oiling is performed by spraying a small amount of silicone oil, and the antistatic spray is an aqueous solution containing a quaternary ammonium salt.
[0020] Preferably, in the polyphenol cross-linking coating step, the mass concentration of the natural polyphenol modifier aqueous solution is 1%-3%.
[0021] Preferably, in the drying, straightening and shaping step, a certain tension is applied to the fiber during the drying process to keep the fiber in a straight state, and the tension is 1.5-2.5 times the weight of the fiber itself.
[0022] Preferably, the imitation human hair protein filaments are composed of modified animal keratin fibers, which are close to natural human hair in appearance and performance, and the fiber surface has a uniform organic coating.
[0023] The present invention provides a multi-functional synergistically modified human hair protein filament and its preparation process. It has the following beneficial effects:
[0024] 1. The present invention uses a structural reorganization pretreatment, using a highly polar organic solvent to swell the animal hair fibers, rearranging the keratin scales on the fiber surface. The originally rough and loosely arranged scales become soft and smooth, significantly reducing the roughness of the fiber surface and eliminating the inherent spiky feel of animal hair. Simultaneously, the polyphenol cross-linking coating step further forms a dense, smooth organic film on the fiber surface, filling the gaps between the scales and imparting a smooth surface with a soft sheen that resembles human hair. This sheen is not glaringly reflective, but rather a natural, matte, silky luster that closely resembles the visual effect of human hair reflecting light. This addresses the unnatural sheen and suboptimal feel of traditional wig materials, significantly enhancing the fidelity of wigs and other products.
[0025] 2. During the structural reorganization pretreatment stage, the present invention utilizes a solvent to alter the internal structure of the fiber. The partially dissociated keratin provides a channel for the subsequent penetration of the modifier, allowing the polyphenol molecules to penetrate deeply into the fiber and cross-link with the protein. The dense coating formed during the polyphenol cross-linking coating process not only covers the fiber surface but also penetrates into the fiber interior, forming a stable complex structure with the protein molecules, thereby enhancing the fiber's strength and toughness. This makes the human hair-like protein filaments prepared by the present invention more durable in the face of external forces such as daily combing and pulling, and less prone to problems such as breakage and deformation, thus broadening the material's application range.
[0026] 3. The human hair-like protein filaments prepared by this invention exhibit excellent antistatic and hydrophilic properties. The polyphenol cross-linking coating process introduces a large number of hydrophilic groups, which effectively increase the fiber's hygroscopicity, allowing it to absorb moisture from the surrounding environment even in dry conditions, thereby reducing the accumulation of static electricity. Compared to unmodified animal hair fibers, the modified fibers have a significantly increased moisture content. The resulting wigs are less susceptible to electrostatic discharge, and the hair strands do not repel and tangle due to static electricity, providing a safer and more comfortable wearing experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is the overall flow chart of the present invention. DETAILED DESCRIPTION
[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0029] Please see the attached Figure 1The embodiment of the present invention provides a multi-performance synergistically modified human hair protein silk and a preparation process.
[0030] Example 1
[0031] Yak hair was used as the raw material, cleaned, degreased, and then bleached. The pretreated yak hair fibers were then immersed in hexafluoroisopropanol for one hour to swell and restructure the keratin scales on the fiber surface. The swollen fibers were then immersed in a 1.5% aqueous tannic acid solution for two hours at 30°C. The fibers were then straightened, tensioned, and dried at 60°C for four hours to produce human hair-like protein filaments.
[0032] Example 2
[0033] Wool was used as the raw material, cleaned, degreased, and bleached. The pretreated wool fibers were then immersed in formic acid for 0.5 hours at room temperature. The swollen fibers were then immersed in a 2% tannin extract solution at 40°C for 3 hours. The fibers were then dried, straightened, and shaped at 50°C for 6 hours while tension was applied to the fibers, resulting in human hair-like protein fibers.
[0034] Example 3
[0035] Horsehair was used as the raw material. After cleaning, degreasing, and bleaching, it was immersed in acetic acid at 40°C for 2 hours. The fiber was then immersed in a 1% aqueous solution of quercetin for 1 hour at room temperature. The fiber was then dried, straightened, and shaped at 70°C for 2 hours to produce human hair-like protein filaments.
[0036] Comparative Example 1
[0037] Compared with Example 1, the difference is that no solvent swelling treatment is performed, and the rest are the same.
[0038] Comparative Example 2
[0039] Compared with Example 1, the difference is that the polyphenol cross-linking coating step is omitted, and the rest are the same.
[0040] Comparative Example 3
[0041] Compared with Example 2, the difference is that the strongly polar organic solvent is replaced by water, and the rest are the same.
[0042] Comparative Example 4
[0043] Compared with Example 2, the difference is that no tension is applied to the fibers for drying, straightening and shaping, and the rest are the same.
[0044] Comparative Example 5
[0045] Compared with Example 3, the difference is that no raw material pretreatment is performed, and the rest are the same.
[0046] Comparative Example 6
[0047] Compared with Example 3, the difference is that the polyphenol cross-linking coating treatment temperature is increased to 60° C., and the rest are the same.
[0048] Test Example 1: Appearance and gloss test
[0049] The appearance and gloss of the human hair-like protein filaments produced in Examples 1-3 and Comparative Examples 1, 2, 5, and 6 were observed. The protein filaments in Examples 1-3 had a smooth surface and a natural, matte, silky sheen, closely resembling the sheen of real human hair. Comparative Example 1 lacked solvent swelling, resulting in a rough fiber surface and a dull gloss. Comparative Example 2 omitted the polyphenol cross-linking coating step, significantly reducing gloss. Comparative Example 5 lacked pretreatment, resulting in uneven color. Comparative Example 6, with the coating temperature increased, exhibited an unnatural gloss.
[0050] Test Example 2: Mechanical Properties Test
[0051] The protein filaments of Examples 1-3 and Comparative Examples 1, 2, and 4 were tested for tensile strength and elongation at break. The tensile strength and toughness of the protein filaments of Examples 1-3 were close to those of real human hair. Comparative Example 1 lacked swelling treatment, resulting in low fiber strength. Comparative Example 2 lacked a cross-linked coating, resulting in poor strength and toughness. Comparative Example 4 lacked tension, resulting in easy fiber deformation.
[0052] Test Example 3: Antistatic Performance Test
[0053] The electrostatic voltage of the protein filaments of Examples 1-3 and Comparative Examples 1, 2, 3, and 6 was tested. The protein filaments of Examples 1-3 had low electrostatic voltage and good antistatic performance. Comparative Examples 1, 2, 3, and 6 had high electrostatic voltage and poor antistatic performance due to processing defects.
[0054] The test data table is shown in Table 1:
[0055]
[0056]
[0057] Table 1
[0058] The above test data demonstrates significant advantages in the preparation method of the multi-functional, synergistically modified human hair-like protein filaments of the present invention. In terms of appearance and gloss, the human hair-like protein filaments of Examples 1-3 all exhibited a natural, matte, silky sheen, highly similar to real human hair. In contrast, Comparative Example 1 lacked solvent swelling, resulting in a rough fiber surface and a dull sheen. Comparative Example 2 omitted the polyphenol cross-linking coating step, significantly reducing gloss. Comparative Example 5 lacked pretreatment, resulting in uneven color. Comparative Example 6, with the coating temperature increased, exhibited an unnatural gloss.
[0059] In terms of mechanical properties, the tensile strength of the protein filaments in Examples 1-3 reached 180 MPa, 175 MPa and 185 MPa, respectively, and the elongation at break was 35%, 38% and 32%, respectively, which are close to the level of real human hair; while Comparative Example 1 was not subjected to swelling treatment, and the fiber strength was only 120 MPa; Comparative Example 2 had no cross-linked coating, and its strength and toughness were poor, with a tensile strength of only 100 MPa; Comparative Example 4 did not apply tension, the fiber was easily deformed, and the tensile strength and elongation at break were also lower than those of the examples.
[0060] In terms of antistatic performance, the electrostatic voltage of the protein filaments of Examples 1-3 is lower than 60V, and the antistatic performance is excellent; while the electrostatic voltage of Comparative Examples 1, 2, 3, and 6 is as high as 200V or more due to processing defects, and the antistatic performance is poor.
[0061] In summary, the present invention achieves a comprehensive and synergistic improvement in the appearance, mechanical properties, and antistatic properties of animal hair fibers through key steps such as structural reorganization pretreatment and polyphenol cross-linking coating. The prepared human hair protein fibers have properties close to those of real human hair and have broad market application prospects.
[0062] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A multi-functional synergistically modified human hair protein filament, characterized by: The human hair-like protein filaments are composed of modified animal keratin fibers, are close to natural human hair in appearance and performance, and have a uniform organic coating on the fiber surface.
2. A method for preparing multi-functional synergistically modified human hair protein silk, according to the multi-functional synergistically modified human hair protein silk of claim 1, characterized in that: The steps include: Raw material pretreatment: Animal hair keratin fiber raw materials are selected, and the animal hair keratin fiber raw materials are one or more of yak hair, wool, and horse hair. They are cleaned and degreased to remove oil and impurities, and then bleached to reduce the original color of the raw materials so that they can be easily given the target color, thereby obtaining clean light-colored fibers; Solvent swelling treatment: The pretreated fiber is immersed in a strong polar organic solvent for a certain period of time. The strong polar organic solvent is hexafluoroisopropanol, formic acid or acetic acid, so that the keratin scale structure on the fiber surface swells and reorganizes; Polyphenol cross-linking coating: The solvent-treated fiber is immersed in an aqueous solution of a natural polyphenol modifier, such as tannic acid, tannin, or quercetin, to allow the polyphenol to complex with the fiber protein, forming a dense cross-linking coating on the fiber surface; Drying, straightening and shaping: The fibers treated with polyphenol cross-linking coating are straightened and dried to solidify at a drying temperature of 50-70°C and a drying time of 2-6 hours to obtain simulated human hair protein fibers with a smooth surface and stable performance.
3. The method for preparing a multi-performance synergistically modified human hair protein silk according to claim 2, characterized in that: In the raw material pretreatment step, the hair is cleaned and degreased using a commercial industrial hair degreasing agent in a 20-40°C water bath by ultrasonic cleaning for 10-20 minutes, and the hair is bleached using a 3%-5% hydrogen peroxide solution at 50-60°C for 30-60 minutes.
4. The method for preparing multi-functional synergistically modified human hair protein silk according to claim 3, characterized in that: The time of the solvent swelling treatment is 0.5-2 hours, and the temperature is room temperature to 40°C.
5. The method for preparing multi-functional synergistically modified human hair protein silk according to claim 2, characterized in that: The time for the polyphenol cross-linking coating is 1-3 hours, and the temperature is room temperature to 40°C.
6. The method for preparing multi-functional synergistically modified human hair protein silk according to claim 2, characterized in that: After drying, straightening and shaping, the fiber is subjected to a post-finishing step, wherein the post-finishing step includes lightly oiling or using an antistatic spray to further enhance the surface conductivity.
7. The method for preparing multi-functional synergistically modified human hair protein silk according to claim 6, characterized in that: The light oiling adopts a small amount of silicone oil spray, and the antistatic spray is an aqueous solution containing quaternary ammonium salt.
8. The method for preparing multi-functional synergistically modified human hair protein silk according to claim 2, characterized in that: In the polyphenol cross-linking coating step, the mass concentration of the natural polyphenol modifier aqueous solution is 1%-3%.
9. The method for preparing multi-functional synergistically modified human hair protein silk according to claim 2, characterized in that: In the drying, straightening and shaping step, a certain tension is applied to the fiber during the drying process to keep the fiber in a straight state, and the tension is 1.5-2.5 times the weight of the fiber itself.