CN117256989A

CN117256989A - Wig

Info

Publication number: CN117256989A
Application number: CN202210826536.3A
Authority: CN
Inventors: 武玉和; 许向东; 兰宇轩; 化云龙
Original assignee: Xuchang Longqi Electronic Commerce Co ltd; Beijing Micro Structure Factory Biotechnology Co ltd
Current assignee: Xuchang Longqi Electronic Commerce Co ltd; Beijing Micro Structure Factory Biotechnology Co ltd
Priority date: 2022-06-14
Filing date: 2022-07-13
Publication date: 2023-12-22

Abstract

The invention provides a wig, which comprises an inner layer structure and an outer layer structure, wherein the inner layer structure at least comprises an inner layer substrate of P3HB4HB, and the outer layer structure at least comprises an outer layer substrate of P3HB4HB, and the wig with a skin-core type or sea-island type structure is prepared by adopting melt spinning. The wig fully imitates human hair, has the strength of being more than that of human hair and excellent dyeing property, and can completely replace chemical fiber wigs.

Description

Wig

Technical Field

The invention relates to the technical field of fiber materials, in particular to a wig, a preparation method and application thereof.

Background

At present, high-grade wigs mostly take human hair, animal hair or protein fibers as raw materials, have soft hand feeling, moderate glossiness and good air permeability, but have high cost and face the problem of raw material shortage. However, wigs made of synthetic fibers such as Polyester (PET), polyvinyl chloride (PVC), polyamide (PA), polypropylene (PP) and the like have inferior hand feeling, gloss and usability, though they are low in cost, and cannot be compared with human hair. In addition, chemical fiber wigs cannot be naturally degraded after being abandoned, so that a large amount of wigs are accumulated, are extremely difficult to treat, bring hidden danger to the ecological environment, and do not meet the concept of sustainable development.

Based on the above situation, it is highly desirable to develop a suitable degradable material as a main base material for preparing wigs to replace low-grade pure chemical fiber wigs, and meanwhile, the wigs have physical and chemical characteristics and use experience comparable to those of human hair, and also have good characteristics of ventilation, antibiosis, antistatic, heat resistance and the like, so that the outstanding problems in the existing wig industry are solved.

Disclosure of Invention

The invention provides a wig with a skin-core type or sea-island type structure, which is composed of specific raw materials. The wig fully imitates human hair, has the strength of being more than that of human hair and excellent dyeing property, and can completely replace chemical fiber wigs. The wig has good antibacterial and anti-mite properties and moisture properties without adding any antibacterial agent or smoothing agent, smooth hand feeling and excellent skin friendliness. The preparation method of the wig not only omits the steps of acid washing, bleaching and dyeing, but also can dye and fade again in the subsequent use process, so that the use experience of the wig is more similar to that of real hair. In addition, the hairpiece shaping mode is more uniform, the shaping temperature is lower, the shaping time is shorter, the normal service life is long, meanwhile, the degradation speed after abandoning is high, and the hairpiece shaping device is more in line with the low-carbon environment-friendly concept. Specific:

In a first aspect of the present invention, a wig is provided, said wig comprising an outer structure and an inner structure.

The mass ratio of the outer layer structure (or raw materials thereof) to the inner layer structure (or raw materials thereof) is (35-126): any one of the values (10 to 89), preferably (62.5 to 81): any of the values of (35-50), more preferably 8:5 or 1.6:1.

preferably, the outer layer structure (or raw materials thereof) comprises an outer layer base material and an outer layer auxiliary material. Wherein the mass content of the outer layer substrate in the outer layer structure (or raw material thereof) is any one of 50% -100% (preferably 50% -62.5% or 62.5% -100% or 60-70%), for example 50%, 60%, 62.5%, 65%, 70%, 80%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, 99.5%, 99.9% or 100%. The mass content of the outer layer auxiliary material in the outer layer structure (or raw materials thereof) is any value of 0% -50%, for example, 0%, 5%, 6%, 7%, 8%, 9%, 10%, 15%, 20%, 30%, 40% or 50%.

In one embodiment of the present invention, the outer layer structure (or raw materials thereof) comprises 35 to 90 parts (preferably 55 to 70 parts) of an outer layer base material and 0 to 36 parts (preferably 12 to 24) of an outer layer auxiliary material.

In one embodiment of the present invention, the outer layer structure (or raw materials thereof) comprises 62.5 parts of an outer layer base material and 17.625 parts of an outer layer auxiliary material.

Preferably, the outer substrate comprises P3HB4HB. The molar content of 4HB in said P3HB4HB is any value from 0 to 20%, preferably from 5 to 20% or from 8 to 15% or from 10 to 20% or from 8 to 10%, for example from 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%.

Preferably, the outer substrate comprises the same 4HB molar content of P3HB4HB.

Preferably, the outer substrate comprises one or a combination of more than two of P3HB4HB with different 4HB molar contents.

The inner layer structure (or raw materials thereof) comprises an inner layer base material and an inner layer auxiliary material. Wherein the mass content of the inner layer substrate in the inner layer structure (or raw material thereof) is any one of 25% -100%, for example 25%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, 99.5%, 99.9% or 100%. The mass content of the inner layer auxiliary material in the inner layer structure (or raw materials thereof) is any value of 0% -75%, for example, 0%, 5%, 6%, 7%, 8%, 9%, 10%, 15%, 20%, 30%, 40%, 50%, 60%, 70% or 75%.

In one embodiment of the present invention, the inner layer structure (or raw material thereof) comprises 10-60 parts (preferably 30-40 parts) of an inner layer base material and 0-29 parts (preferably 10-19 parts) of an inner layer auxiliary material.

In one embodiment of the present invention, the inner layer structure (or raw materials thereof) comprises 35 parts of an inner layer base material and 14.125 parts of an inner layer auxiliary material.

The inner layer substrate comprises P3HB4HB. The molar content of 4HB in said P3HB4HB is any value from 0 to 20%, preferably from 5 to 20% or from 8 to 15% or from 10 to 20% or from 8 to 10%, for example from 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%.

Preferably, the inner substrate comprises the same 4HB molar content of P3HB4HB.

Preferably, the inner layer substrate comprises one or a combination of more than two of P3HB4HB with different 4HB molar contents.

Preferably, the inner substrate further comprises one or a combination of more than two of PBAT, PBS, PBA, PBT, PLA, PPC, regenerated cellulose, alginate fiber or soybean protein fiber.

In one embodiment of the present invention, the inner substrate is selected from any one of the following groups:

A) P3HB4HB, PLA and PBAT, wherein the mass ratio of P3HB4HB, PLA and PBAT is (10-20): (10-15): (5-10), preferably 16:12:7, more preferably 16 parts P3HB4HB, 12 parts PLA, 7 parts PBAT;

b) P3HB4HB, PPC and soybean protein fiber, wherein, the mass ratio of P3HB4HB, PPC and soybean protein fiber is (10-15): (10-20): (5-10), preferably 13:16:6, more preferably 13 parts of P3HB4HB, 16 parts of PPC, 6 parts of soybean protein fiber;

c) P3HB4HB, seaweed fiber and PBS, wherein the mass ratio of P3HB4HB, seaweed fiber and PBS is (10-20): (10-15): (5-10), preferably 15:12:8, more preferably 15 parts of P3HB4HB, 12 parts of alginate fiber, 8 parts of PBS;

d) P3HB4HB, PBA and PBT, wherein the mass ratio of P3HB4HB, PBA and PBT is (10-20): (5-15): (5-15), preferably 15:10:10, more preferably 15 parts of P3HB4HB, 10 parts of PBA, 10 parts of PBT;

e) P3HB4HB, PLA and regenerated cellulose, wherein the mass ratio of P3HB4HB, PLA and regenerated cellulose is (5-15): (10-20): (5-15), preferably 10.5:15:9.5, more preferably 10.5 parts of P3HB4HB, 15 parts of PLA, 9.5 parts of regenerated cellulose.

Preferably, the outer layer auxiliary material or the inner layer auxiliary material respectively and independently comprises one or more than two of a heat stabilizer, a chain extender, an antioxidant, a nucleating agent, a coupling agent, an anti-hydrolysis agent, a flame retardant, a surfactant or a masterbatch.

Wherein the heat stabilizer is one or more selected from calcium stearate, zinc stearate, magnesium stearate, barium stearate, methyl thioglycolate and heat stabilizer DP 1100;

the chain extender is one or more selected from chain extender X-U993, chain extender LK4468, chain extender ADR4400 and chain extender 6901;

the antioxidant is one or more selected from antioxidant 1010, antioxidant 1024, antioxidant 1076 and antioxidant T501;

the nucleating agent is one or more selected from tungsten disulfide, titanium boride, boron nitride, nano titanium dioxide, nano silicon dioxide HB-630, hollow glass beads and carbon nanotubes;

the coupling agent is one or more selected from titanate coupling agent AT1618, maleic anhydride, coupling agent BYKC8003, silane coupling agent A-172, silane coupling agent KH550 and silane coupling agent KH570;

preferably selected from titanate coupling agents AT1618, maleic anhydride and silane coupling agents KH570.

In one embodiment of the invention, 0.5 part of titanate coupling agent AT1618, 0.25 part of maleic anhydride and 0.25 part of silane coupling agent KH570; alternatively, 0.25 part of titanate coupling agent AT1618, 0.25 part of maleic anhydride and 0.25 part of silane coupling agent KH570.

For example, 62.5 parts of P3HB4HB (4 HB mole content 8%) and 0.5 parts of titanate coupling agent AT1618, 0.25 parts of maleic anhydride, 0.25 parts of silane coupling agent KH570 in the outer layer structure.

For example, in the inner layer structure, 16 parts of P3HB4HB (15% by mole of 4 HB), 12 parts of PLA, 7 parts of PBAT, 0.25 parts of titanate coupling agent AT1618, 0.25 parts of maleic anhydride, and 0.25 parts of silane coupling agent KH570 are used.

Preferably selected from titanate coupling agents AT1618, maleic anhydride and silane coupling agents KH550.

In one embodiment of the invention, 0.375 parts of titanate coupling agent AT1618, 0.25 parts of maleic anhydride, 0.375 parts of silane coupling agent KH550; alternatively, 0.25 part of titanate coupling agent AT1618, 0.25 part of maleic anhydride and 0.25 part of silane coupling agent KH550.

For example, 50 parts of P3HB4HB (5% by mole of 4 HB), 12.5 parts of P3HB4HB (20% by mole of 4 HB), 0.375 parts of titanate coupling agent AT1618, 0.25 parts of maleic anhydride, and 0.375 parts of silane coupling agent KH550 are contained in the outer layer structure.

For example, in the inner layer structure, 13 parts of P3HB4HB (15% by mole of 4 HB), 16 parts of PPC, 6 parts of soybean protein fiber, 0.25 parts of titanate coupling agent AT1618, 0.25 parts of maleic anhydride, and 0.25 parts of silane coupling agent KH550 are included.

Preferred are BYKC8003, maleic anhydride and silane coupling agent A-172.

In one embodiment of the present invention, the coupling agent BYKC8003 is 0.25 parts, the maleic anhydride is 0.375 parts, the silane coupling agent A-172 is 0.375 parts, or the coupling agent BYKC8003 is 0.2 parts, the maleic anhydride is 0.275 parts, and the silane coupling agent A-172 is 0.275 parts.

For example, in the outer layer structure, 5 parts of P3HB4HB (5% by mole of 4 HB), 57.5 parts of P3HB4HB (10% by mole of 4 HB), 0.25 parts of coupling agent BYKC8003, 0.375 parts of maleic anhydride, and 0.375 parts of silane coupling agent A-172.

For example, in the inner layer structure, 15 parts of P3HB4HB (15% by mole of 4 HB), 12 parts of alginate fiber, 8 parts of PBS, 0.2 parts of coupling agent BYKC8003, 0.275 parts of maleic anhydride, and 0.275 parts of silane coupling agent A-172 are used.

The anti-hydrolysis agent is selected from one or more of an anti-hydrolysis agent 936, an anti-hydrolysis agent HD900A and an anti-hydrolysis agent BTWR-500;

the flame retardant is one or more selected from ammonium polyphosphate, triphenyl phosphate and toluene diphenyl phosphate.

Preferably from ammonium polyphosphate and/or triphenyl phosphate, more preferably the mass ratio of ammonium polyphosphate to triphenyl phosphate is from 3:5 to 2:3.

For example, 62.5 parts of P3HB4HB (4 HB mole content 8%) and 2 parts of ammonium polyphosphate and 3 parts of triphenyl phosphate in the outer layer structure.

For example, 16 parts of P3HB4HB (15% by mole of 4 HB), 12 parts of PLA, 7 parts of PBAT, 1.5 parts of ammonium polyphosphate, and 2.5 parts of triphenyl phosphate are contained in the inner layer structure.

Preferably triphenyl phosphate and/or cresyl diphenyl phosphate, and more preferably triphenyl phosphate to cresyl diphenyl phosphate in a mass ratio of 11:5 to 7:3.

For example, 50 parts of P3HB4HB (5% by mole of 4 HB), 12.5 parts of P3HB4HB (20% by mole of 4 HB), 3.5 parts of triphenyl phosphate, and 1.5 parts of toluene diphenyl phosphate are contained in the outer layer structure.

For example, in the inner layer structure, 13 parts of P3HB4HB (15% by mole of 4 HB), 16 parts of PPC, 6 parts of soybean protein fiber, 2.75 parts of triphenyl phosphate, and 1.25 parts of toluene diphenyl phosphate are included.

Preferably selected from ammonium polyphosphate and/or toluene diphenyl phosphate.

For example, in the outer layer structure, 5 parts of P3HB4HB (5% by mole of 4 HB), 57.5 parts of P3HB4HB (10% by mole of 4 HB), 2.5 parts of ammonium polyphosphate, and 2.5 parts of toluene diphenyl phosphate are contained.

For example, in the inner layer structure, 15 parts of P3HB4HB (4 HB molar content 15%), 12 parts of alginate fiber, 8 parts of PBS, 2 parts of ammonium polyphosphate, and 2 parts of toluene diphenyl phosphate.

The surfactant is one or more selected from polyethylene glycol, polyvinyl alcohol, rhamnolipid and quaternary ammonium salt surfactant; further, the polyethylene glycol is one or more of polyethylene glycol-3000, polyethylene glycol-6000, polyethylene glycol-10000 and polyethylene glycol-20000; the polyvinyl alcohol is one or more of polyvinyl alcohol 1799, polyvinyl alcohol 2099, polyvinyl alcohol 2499 and polyvinyl alcohol 2699; the quaternary ammonium salt type surfactant is one or more of benzyl triethyl ammonium chloride, didodecyl dimethyl ammonium chloride, cetyl trimethyl ammonium chloride and octadecyl trimethyl ammonium chloride.

Preferably from polyethylene glycol-6000 and/or rhamnolipids.

For example, in the outer layer structure, 62.5 parts of P3HB4HB (4 HB mole content 8%) and 0.375 parts of polyethylene glycol-6000, 0.375 parts of rhamnolipid. Or 62.5 parts of P3HB4HB (4 HB mole content 8%) and 0.375 parts of rhamnolipid in the outer structure.

For example, 16 parts of P3HB4HB (15% by mole of 4 HB), 12 parts of PLA, 7 parts of PBAT, 0.25 parts of polyethylene glycol-6000, and 0.25 parts of rhamnolipid are contained in the inner layer structure. Or 16 parts of P3HB4HB (4 HB molar content 15%), 12 parts of PLA, 7 parts of PBAT and 0.25 part of rhamnolipid in the inner layer structure.

Preferably selected from polyvinyl alcohol-2099 and/or rhamnolipids.

For example, 50 parts of P3HB4HB (5% by mole of 4 HB), 12.5 parts of P3HB4HB (20% by mole of 4 HB), 0.3 parts of polyvinyl alcohol-2099, and 0.45 parts of rhamnolipid are contained in the outer layer structure.

For example, in the inner layer structure, 13 parts of P3HB4HB (15% by mol of 4 HB), 16 parts of PPC, 6 parts of soybean protein fiber, 0.2 parts of polyvinyl alcohol-2099, and 0.3 parts of rhamnolipid are contained.

Preferably selected from rhamnolipids and/or benzyltriethylammonium chloride.

For example, in the outer layer structure, 5 parts of P3HB4HB (5% by mole of 4 HB), 57.5 parts of P3HB4HB (10% by mole of 4 HB), 0.45 parts of rhamnolipid, and 0.3 parts of benzyl triethyl ammonium chloride.

For example, in the inner layer structure, 15 parts of P3HB4HB (15% by mole of 4 HB), 12 parts of alginate fiber, 8 parts of PBS, 0.3 part of rhamnolipid, and 0.2 part of benzyl triethyl ammonium chloride are used.

The color master batch is a P3HB4HB primary color master batch with different color systems added according to the requirement.

In one embodiment of the present invention, the outer layer structure (or raw material thereof) comprises 62.5 parts of a copolymer P3HB4HB (4 HB molar content 8%) of 3-hydroxybutyric acid (3 HB) and 4-hydroxybutyric acid (4 HB), and the inner layer structure (or raw material thereof) comprises 16 parts of P3HB4HB (4 HB molar content 15%), 12 parts of PLA, 7 parts of PBAT. Preferably, the inner layer structure and/or the outer layer structure further comprises a coupling agent, a surfactant and/or a flame retardant.

In one embodiment of the invention, the outer layer structure (or raw material thereof) comprises 50 parts of P3HB4HB (4 HB mole content 5%), 12.5 parts of P3HB4HB (4 HB mole content 20%), and the inner layer structure (or raw material thereof) comprises 13 parts of P3HB4HB (4 HB mole content 15%), 16 parts of PPC, 6 parts of soybean protein fiber. Preferably, the inner layer structure and/or the outer layer structure further comprises a coupling agent, a surfactant and/or a flame retardant.

In one embodiment of the invention, the outer layer structure (or raw material thereof) comprises 5 parts P3HB4HB (5% by mole of 4 HB), 57.5 parts P3HB4HB (10% by mole of 4 HB), and the inner layer structure (or raw material thereof) comprises 15 parts P3HB4HB (15% by mole of 4 HB), 12 parts alginate fiber, 8 parts PBS. Preferably, the inner layer structure and/or the outer layer structure further comprises a coupling agent, a surfactant and/or a flame retardant.

In one embodiment of the invention, the outer layer structure (or starting material thereof) comprises 62.5 parts P3HB4HB (4 HB mole content 8%), and the inner layer structure (or starting material thereof) comprises 15 parts P3HB4HB (4 HB mole content 10%), 10 parts PBA, 10 parts PBT. Preferably, the inner layer structure and/or the outer layer structure further comprises a coupling agent, a surfactant and/or a flame retardant.

In one embodiment of the invention, the outer layer structure (or starting material thereof) comprises 62.5 parts P3HB4HB (4 HB mole content 8%), and the inner layer structure (or starting material thereof) comprises 10.5 parts P3HB4HB (4 HB mole content 20%), 15 parts PLA, 9.5 parts regenerated cellulose. Preferably, the inner layer structure and/or the outer layer structure further comprises a coupling agent, a surfactant and/or a flame retardant.

In one embodiment of the present invention, the outer layer structure (or raw material thereof) includes 62.5 parts of 3-hydroxybutyric acid (3 HB) and 4-hydroxybutyric acid (4 HB) copolymer P3HB4HB (4 HB molar content 8%), 1 part of coupling agent, 0.375 part or 0.75 part of surfactant and 5 parts of flame retardant, and the inner layer structure (or raw material thereof) includes 16 parts of P3HB4HB (4 HB molar content 15%), 12 parts of PLA, 7 parts of PBAT, 0.75 parts of coupling agent, 0.25 parts or 0.5 parts of surfactant and 4 parts of flame retardant.

In one embodiment of the invention, the outer layer structure (or raw material thereof) comprises 62.5 parts of 3-hydroxybutyric acid (3 HB) and 4-hydroxybutyric acid (4 HB) copolymer P3HB4HB (4 HB mole content 8%) and 0.5 parts of titanate coupling agent AT1618, 0.25 parts of maleic anhydride, 0.25 parts of silane coupling agent KH570, 2 parts of ammonium polyphosphate, 3 parts of triphenyl phosphate, 0.375 parts of polyethylene glycol-6000, 0.375 parts of rhamnolipid, and the inner layer structure (or raw material thereof) comprises 16 parts of P3HB4HB (4 HB mole content 15%), 12 parts of PLA, 7 parts of PBAT, 0.25 parts of titanate coupling agent AT1618, 0.25 parts of maleic anhydride, 0.25 parts of silane coupling agent KH570, 1.5 parts of ammonium polyphosphate, 2.5 parts of triphenyl phosphate, 0.25 parts of polyethylene glycol-6000, 0.25 parts of rhamnolipid.

In one embodiment of the invention, the composition comprises 35-90 parts of an outer substrate, 0-2.25 parts of a chain extender, 0-1.5 parts of an antioxidant, 0-4 parts of a nucleating agent, 0-2.5 parts of a heat stabilizer, 0-2 parts of a coupling agent, 0-1.5 parts of an anti-hydrolysis agent, 0-1.5 parts of a surfactant, 0-10 parts of a flame retardant, 0-10 parts of a color master batch, and 10-60 parts of an inner substrate, 0-1.75 parts of a chain extender, 0-1.5 parts of an antioxidant, 0-4 parts of a nucleating agent, 0-1.5 parts of a heat stabilizer, 0-1.5 parts of a coupling agent, 0-1 part of an anti-hydrolysis agent, 0-1 part of a surfactant, 0-8 parts of a flame retardant, and 0-8 parts of a color master batch.

Preferably, the wig has a skin-core type or island-in-sea type structure.

Wherein the outer layer structure is a skin layer or sea component, and the inner layer structure is a core layer or island component.

In a second aspect of the present invention, there is provided a method for manufacturing the wig, wherein the method comprises the steps of melting and granulating the outer layer structure and the inner layer structure respectively, spinning, cooling, oiling and stretch-winding.

Preferably, the stretch winding is followed by inspection, classification and packaging to obtain a composite PHA wig;

preferably, the preparation method further comprises a hair product manufacturing process, namely, the composite PHA wig yarn is subjected to the steps of foaming, triple connection, post treatment, shaping, moisture regaining and packaging, so that the wig taking the PHA as a base material is obtained.

Preferably, the temperature of the cylinder for melting granulation of the outer layer structure is any value of 130-210 ℃, and more preferably any value of 150-190 ℃ or 155-185 ℃; for example, cartridge temperatures of 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210 ℃.

Preferably, the air supply temperature of the outer layer structure melting granulation is any value of 18-65 ℃, more preferably any value of 45-65 ℃ or 50-60 ℃; for example, the blowing temperatures are 18, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65 ℃.

Preferably, the temperature of the material cylinder for melting granulation of the inner layer structure is any value of 130-210 ℃, and more preferably any value of 150-205 ℃ or 155-200 ℃; for example, cartridge temperatures of 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210 ℃.

Preferably, the air supply temperature of the inner layer structure melting granulation is any value of 18-65 ℃, and more preferably any value of 25-60 ℃ or 30-55 ℃; for example, the blowing temperatures are 18, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65 ℃.

Preferably, the temperature of the spinning is any value from 120 to 210 ℃, further preferably any value from 120 to 180 ℃ or 125 to 175 ℃; for example 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210 ℃.

Preferably, the pressure in the melt metering pump in the spinning process is controlled to be any value of 8-17Mpa, more preferably any value of 10-15 Mpa; for example 8, 9, 10, 11, 12, 13, 14, 15, 16, 17Mpa.

Preferably, the spinning speed is any one of 80-160m/min, for example 80, 90, 100, 110, 120, 130, 140, 150, 160m/min.

Preferably, the temperature of the stretch wrap is set to any value from 70 to 120 ℃, more preferably from 80 to 120 or from 85 to 120 ℃, such as 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120 ℃.

Preferably, the stretch-wrap has a stretch-wrap speed of any one of 200-640m/min, such as 200, 300, 400, 500, 600, 640m/min.

Preferably, the stretch ratio of the stretch wrap is any one of values from 2.5 to 4, such as 2.5, 3, 3.5, 4.

Preferably, the preparation method further comprises shaping.

Preferably, the shaping is a hair curling shaping or a hair straightening shaping. Wherein, the hair bending and shaping mode preferably adopts steam cabinet shaping, and the hair straightening and shaping mode preferably adopts steam cabinet shaping.

Further preferably, the hair styling temperature is any value from 60 to 118 ℃, preferably any value from 65 to 110 ℃ or 70 to 105 ℃, for example 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 118 ℃.

Further preferably, the hair-styling time of the hair-styling is any one of 15 to 70min, preferably any one of 25 to 60min, for example 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70min.

Further preferred, the hair styling temperature is any value from 70 to 125 ℃, preferably from 75 to 118 ℃ or from 80 to 118 ℃, for example 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 118, 120, 125 ℃.

It is further preferred that the hair straightening is performed for a setting time of any one of 20 to 75 minutes, preferably any one of 30 to 65 minutes, for example 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75 minutes.

In one embodiment of the present invention, the preparation method comprises the following steps:

step one: weighing 35-90 (preferably 55-70) parts of outer layer base material and 0-36 (preferably 12-24) parts of outer layer auxiliary material by mass, mixing, melting by a double-screw extruder, cooling and granulating, wherein the temperature of a charging barrel is set to 130-210 ℃, and the temperature of the charging barrel is set to 18-65 ℃ by adopting circular blowing, so as to obtain outer layer granules;

step two: weighing 10-60 (preferably 30-40) parts of inner base material and 0-29 (preferably 10-19) parts of inner auxiliary material by mass, mixing, melting by a double-screw extruder, cooling and granulating, wherein the temperature of a charging barrel is set to 130-210 ℃, and the temperature of the charging barrel is set to 18-65 ℃ by adopting circular blowing, so as to obtain inner granular materials;

Step three: vacuum drying the obtained outer layer granules and the inner layer granules, respectively injecting the outer layer granules and the inner layer granules into extrusion equipment with a heating device for melting, and carrying out melt extrusion through a screw rod, so that the outer layer granules correspondingly spray out of a skin layer or a sea component and the inner layer granules correspondingly spray out of a core layer/an island component to form a complete composite PHA pre-oriented yarn, wherein the spinning temperature is set to 120-210 ℃, the pressure in a melt metering pump is controlled to 8-17MPa, and the spinning speed is 80-160m/min;

step four: cooling the composite PHA pre-oriented yarn through a circular blowing channel with the length of 1-2m vertically, wherein the blowing temperature is 18-65 ℃;

step five: oiling the composite PHA pre-oriented yarn cooled in the fourth step by an oil roller;

step six: feeding the composite PHA pre-oriented yarn obtained in the fifth step into a hot roller and a winding device for stretching and winding, controlling the stretching temperature to be 70-120 ℃, the stretching and winding speed to be 200-640m/min and the stretching ratio to be 2.5-4, and winding the obtained finished yarn on a bobbin;

preferably, the method further comprises the step seven: and D, checking, grading and packaging the full-wound bobbin obtained in the step six to obtain the composite PHA wig yarn.

Preferably, the method further comprises the step eight: and (3) performing foaming, triple connection, post-treatment, shaping, moisture regaining and packaging on the composite PHA wig yarn to obtain the wig taking the PHA as a base material.

Preferably, in the step eight, the shaping is hair curling shaping or hair straightening shaping; wherein,

the hair bending and shaping mode adopts a steam cabinet for shaping, the temperature is 60-118 ℃, and the shaping time is 15-70min;

the hair straightening and shaping mode adopts a steam cabinet for shaping, the temperature is 70-125 ℃, and the shaping time is 20-75min.

In one embodiment of the present invention, the preparation method comprises:

step one, vacuum drying the raw materials at 70-100 ℃ for 6-12 hours to control the water content below 0.5%;

weighing 35-90 (preferably 62.5) parts of an outer layer base material, 0-2.25 parts of a chain extender, 0-1.5 parts of an antioxidant, 0-4 parts of a nucleating agent, 0-2.5 parts of a heat stabilizer, 0-2 parts of a coupling agent, 0-1.5 parts of an anti-hydrolysis agent, 0-1.5 parts of a surfactant, 0-10 parts of a flame retardant and 0-10 parts of a masterbatch by mass part, carrying out physical mixing, melting and cooling granulation by a double-screw extruder, setting the temperature of a charging barrel to 130-210 ℃, adopting circular blowing, and the air supply temperature to 18-65 ℃ to obtain an outer layer granule;

weighing 10 to 60 (preferably 35) parts of inner layer base material, 0 to 1.75 parts of chain extender, 0 to 1.5 parts of antioxidant, 0 to 4 parts of nucleating agent, 0 to 1.5 parts of heat stabilizer, 0 to 1.5 parts of coupling agent, 0 to 1 part of anti-hydrolysis agent, 0 to 1 part of surfactant, 0 to 8 parts of flame retardant and 0 to 8 parts of color master batch, carrying out physical mixing, melting and cooling granulation by a double-screw extruder, setting the temperature of a charging barrel to be 130 to 210 ℃, adopting circular blowing, and the air blowing temperature to be 18 to 65 ℃ to obtain inner layer granules;

Step three, respectively injecting the outer layer granules and the inner layer granules into extrusion equipment with a heating device for melting after vacuum drying for 1-4 hours at 70-100 ℃, respectively spraying out skin/sea components and core/island components of the composite PHA pre-oriented yarn by a composite spinning component with a skin-core or sea-island structure through screw melt extrusion, wherein the spinning temperature is set to 120-210 ℃, the pressure in a melt metering pump is controlled to 8-17MPa, and the spinning speed is 80-160m/min, so as to obtain the composite PHA pre-oriented yarn;

step four, cooling the composite PHA pre-oriented yarn through a circular blowing channel with the length of 1-2m vertically, wherein the blowing temperature is 18-65 ℃;

step five, oiling the composite PHA pre-oriented yarn obtained by cooling in the step four through an oil roller;

step six, feeding the composite PHA pre-oriented yarn obtained in the step five into a hot roller and a winding device for stretching and winding, controlling the stretching temperature to be 70-120 ℃, the stretching and winding speed to be 200-640m/min and the stretching ratio to be 2.5-4, and winding the obtained finished yarn on a bobbin;

step seven, checking, grading and packaging the full-wound bobbin obtained in the step six to obtain the composite PHA wig yarn;

and step eight, performing hairpiece hairpieces compounded with PHA, three-connecting machine, post-treatment, shaping, moisture regaining and packaging to obtain the hairpiece with PHA as a base material.

In a third aspect of the present invention there is provided the use of the above-described hairpiece in the manufacture of hair-like products, examples of hair-like products including wigs, pieces of hair, false eyelashes, false beards or any artificial hair-like product such as hair for doll production.

The abbreviations and full scale comparisons of the present invention are shown in Table 1.

Table 1: abbreviation and full scale control

The beneficial effects are that:

1. the wig of the present invention has a skin-core type or sea-island type structure. The human hair consists of a cuticle scale layer, a main body cortex layer and a central medulla layer, and the wig is mainly made up of two layers by scale stripping treatment such as acid washing. The wig with the skin-core or sea-island structure fully imitates human hair, approaches the human hair at a microscopic level, and has the characteristics of various materials in the skin layer/sea component and the core layer/island component. The whole wig is flexible and tough in outside, the strength is greater than that of human hair, and the fiber gram weight is further reduced by adding hollow glass beads and the like in the core layer/island components, so that the finally formed wig finished product is lighter, thinner and more comfortable.

2. The hair is pre-dyed by adding color master batch when preparing the hair, and the hair is uniformly and thoroughly dyed, which is similar to human hair, so that the steps of pickling and bleaching in pretreatment in the traditional hair product technology are saved, the manpower and material resources are saved, and the pollution caused by bleaching the hair is reduced. In addition, the wig has excellent dyeing property, can be dyed and faded again in the subsequent use process, and has uniform and consistent color change degree under the same conditions, thereby having obvious positive effects on recycling the wig and improving the use experience of the wig.

3. According to the wig disclosed by the invention, all main components are degradable, and due to the fact that the PHA (polyhydroxyalkanoate) is the largest in proportion, even if other degradable materials exist, the degradation environment requirement is obviously reduced, and the degradation speed is greatly improved. The wig is nontoxic in the whole process from raw material selection to preparation, and is environment-friendly and sustainable.

4. PHA is adopted as a main raw material, so that the use of chemical fiber materials is abandoned, the problem of raw material shortage faced by human hair, animal hair and the like is avoided, meanwhile, the economical efficiency and good use experience are realized, and the chemical fiber wig can be completely replaced.

5. The wig of this application have skin-friendly characteristic, the biocompatibility is splendid, consequently do not have bad experiences such as pruritus, stinging, burning sensation, allergy, dryness, static, airtight when the user wears the wig, compare in traditional chemical fibre class wig, use the travelling comfort to improve greatly, use to experience more to be close to the human hair.

6. The wig of the invention provides possibility for realizing continuous and automatic production of the wig through the PHA modern spinning process, thereby greatly improving the production efficiency; the setting mode is more uniform, and the hair is not different due to hair straightening and hair curling; the setting treatment temperature is greatly lower than that of human hair, and the setting time is also greatly shortened, so that the energy is saved, the emission is reduced, the cost is reduced, the human hair wig can be partially replaced, and the wig industry is innovated.

7. The wig has extremely slow degradation speed in the normal use process, is similar to the loss of real hair, and therefore, has longer service life and is similar to human hair. Only after being abandoned, the material is placed in natural environments such as soil, rivers, lakes, oceans and the like to be rapidly degraded. In addition, the hairpiece taking PHA as a base material has the characteristics of quicker and more convenient setting treatment and higher specific heat capacity of the material, so that the hairpiece does not have obvious performance degradation after being repeatedly switched for many times in the hair straightening and curling states, namely, the repeated modeling durability is excellent, and the characteristics give better use experience to users and have more economic value.

8. The wig of the present invention has a surface with a water wettability similar to that of a real person. This is because the hydrophilic modification of the wig base material by the coupling agent and the surfactant makes the wig base material slightly more hygroscopic and approximate to human hair. The two auxiliary agents produce a synergistic effect, and the PHA has the hydrophobic property, so that the wig is more hydrophilic on the surface and more hydrophobic in the interior, and the wig with the base material has better respiratory feeling, good moisture permeability and air permeability and good water wettability, is easier to blow and dry than human hair, and is more perfect than the comprehensive performance of human hair.

9. According to the wig disclosed by the invention, the auxiliary agents are mainly agents which are environment-friendly, nontoxic, bio-based and good in biocompatibility, and particularly when the bio-based surfactant, namely rhamnolipid, is adopted, the auxiliary agents and PHA main materials are unexpectedly found to have a synergistic effect, so that the wig taking PHA as a base material is more skin-friendly and has a moist feel. The flame retardants are all phosphorus environment-friendly flame retardants, and the reasonable proportion of the flame retardants is compounded to ensure that the flame retardant effect is excellent, and meanwhile, the mechanical properties of the wig taking PHA as a base material are not influenced.

Drawings

Embodiments of the present invention are described in detail below with reference to the attached drawing figures, wherein:

fig. 1: a cross-sectional structure of a hairline, wherein the 1-skin layer, the 2-core layer, the 3-sea component, and the 4-island component.

Fig. 2: in comparative example 1, a wig was made by a person with a certain brand.

Fig. 3: in comparative example 2, a wig was produced by using a certain brand of protein fiber as a base material.

Fig. 4: in comparative example 3, a wig was produced with PAN as a base material.

Fig. 5: wig produced in comparative example 4.

Detailed Description

The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Test, specific methods and references used in the examples

1. Testing

1. Basic performance: fineness and monofilament breaking strength;

2. subjective evaluation: softness, smoothness (hair straightening and hair curling evaluation), fluffiness and glossiness;

3. Processing and service performance: curl fastness, comb resistance, repeated modeling durability, filament breaking strength after curling, dyeing effect, repeated dyeing durability and water wettability;

4. special properties: antistatic properties, air permeability, flame retardance, heat resistance, antibacterial properties, mite resistance, and degradation speed;

5. safety and sanitation performance: the pH value, formaldehyde content, decomposable aromatic amine content, peculiar smell and the like are comprehensively evaluated.

2. Test method

1. Basic Properties

Fineness (dtex): and measuring and calculating the average fineness index of the fiber by adopting a middle section cutting and weighing method. The fibers are carded into fiber bundles with one flush end and parallel and straight sides, then the fiber bundles with the length of 10mm are cut in the middle section of the fibers by a fiber cutter, the cut fiber bundles are weighed on a balance, the total number of the fiber bundles is counted, and the average fineness of the fibers can be calculated according to the number, the weight and the cutting length of the fibers.

Filament breaking strength (cN): according to GB/T13835.5 section 5 of the rabbit hair fibre test method: the test was carried out as described in the "strength at break and elongation at break" and the calculation of the results was carried out as described in "9.1".

2. Subjective evaluation

Softness, smoothness (hair straightening, hair curling evaluation), bulk, gloss: two classes of people were selected as subjects using subjective assessment.

One class consisted of 10 experts or experienced subjects, with a weight of 1. The staff is familiar with scales and description words adopted in subjective tests, human body feeling corresponding to each level in the terms is defined, the performance of the hairline can be rapidly and accurately assessed and quantified, and the staff is first-line staff or hair fiber material research staff with work experience of hair product enterprises for more than three continuous years;

the other class consisted of 10 consumers with simple training, weighing 0.5. Before experiments, the subjects need to carry out fiber performance related knowledge and evaluation scale term interpretation so that the subjects can accurately evaluate the performance of wig wires and ensure the rigor of the results.

Experimental conditions: the temperature is 20+/-2 ℃, the relative humidity is 65+/-2%, and the wind speed is less than or equal to 0.1m/s.

Each performance evaluation scale and description vocabulary are shown in tables 2-5.

Table 2: flexibility subjective evaluation scale

Table 3: smooth subjective evaluation scale

Table 4: subjective evaluation scale for fluffiness

Table 5: subjective evaluation scale for glossiness

3. Processability and service Properties

Curl fastness: refers to the property of the curled fiber that the curled shape remains unchanged when subjected to an external force. The index of the reaction curl fastness is expressed by adopting a plastic deformation rate, namely, after the fiber is repeatedly loaded and unloaded, the percentage of the change of the curl length to the fiber length is:

Plastic deformation rate after first loading and unloading

Wherein: l (L) ₀ -the length (mm) of the natural overhang of the fibre;

L ₁ -the fiber is unloaded after first holding for 30min under load, and naturally hangs for a length (mm) after 2min of recovery.

Plastic deformation rate after the second loading and unloading

Wherein: l (L) ₂ -unloading after the fiber is kept under load for 30min for the second time, and recovering for 2min to naturally hang for a length (mm).

And so on, the plastic deformation rate after the nth loading and unloading

Wherein: l (L) _n -unloading after the nth fiber is kept under the load for 30min, and recovering for 2min to naturally hang for a length (mm).

For more comprehensive characterization curls the curly fastness when the hair curls receive external force in the use, this patent has simulated three kinds of wig silk atress models, namely:

(1) the loading and unloading load function simulates the hand touch or hand pulling and the like during use, and the specific method comprises the following steps:

extracting the shaped single false hair, measuring the natural overhang length L ₀ Then a constant load (3.67 g) is applied to the wig, the wig is unloaded after 30min and restored for 2min, and the length L of the wig after one-time loading and unloading is measured ₁ . Repeating the loading and unloading processes, and sequentially measuring the length L of the wig after being loaded and unloaded for a plurality of times ₂ ，L ₃ ，L ₄ ，L ₅ ，L ₆ ，L ₇ Root of Chinese characterCalculating the plastic deformation rate of the wig according to a formula, and taking an average value of 5 wig wires as a result;

(2) carding (30 times is a period), which simulates the carding of wig when in use, and the specific method is as follows:

selecting shaped false hair tows (about 300 hair tows), and measuring the natural overhang length L of the false hair tows ₀ Then combing the false hair tows evenly and slowly (10-20 cm/s) from the upper end to the lower end by a comb, combing the false hair tows for 7 periods according to the experiment requirement, 30 times per period, 2h of period interval, and measuring and recording the length of the false hair tows after 15min of combing per period, wherein the lengths are L respectively ₁ 、L ₂ 、L ₃ 、L ₄ 、L ₅ 、L ₆ 、L ₇ Calculating the plastic deformation rate of the fibers according to a formula, and taking an average value of 5 bundles of wig tows as a result;

(3) the water washing function simulates the water washing of wigs when in use, and the specific method comprises the following steps:

selecting shaped false hair tows (about 300 hair tows), and measuring the natural overhang length L of the false hair tows ₀ The false hair tows are gently swung in a constant-temperature water bath kettle and cannot be rubbed, so that the uniformity of the false hair tows is ensured. The water washing temperature is set to be 30 ℃ and the water washing time is set to be 20min. Washing the false hair tows for 1 time, 2 times, 3 times, 4 times, 5 times, 6 times and 7 times according to the experiment requirement, horizontally placing in a baking oven at 40 ℃ for drying for 2 hours, taking out, measuring and recording the lengths of the false hair tows, and respectively marking the lengths as L ₁ 、L ₂ 、L ₃ 、L ₄ 、L ₅ 、L ₆ 、L ₇ And calculating the plastic deformation rate of the fiber according to a formula, and taking an average value of 5 false hair tows. Then:

when L _i (i=1, 2, … …, 7) is not less than 4%, and the curl fastness is poor;

when L _i (i=1, 2, … …, 7) all < 4%, but there is no less than 3.25%, judging that the curl fastness is poor;

when L _i (i=1, 2, … …, 7) all < 3.25%, but there is no less than 2.5%, judging that the curl fastness is general;

when L _i (i=1, 2, … …, 7) is less than 2.5%, but is more than or equal to 1.75%, and the curl fastness is judged to be goodThe method is good;

when L _i (i=1, 2, … …, 7) are all < 1.75%, and it is judged that the curl fastness is excellent.

Combing resistance: the wig can adapt to the scene of frequent carding, and after the carding is damaged, the wig is reprocessed or ironed by the electric splint again, so that the property of the damaged part of the wig can be recovered.

The specific evaluation method comprises the following steps: selecting 3 shaped wig tows (about 300 wig tows), and counting the total hair quantity A ₀ Number of damaged hair D ₀ Then combing the false hair tows uniformly (20-40 cm/s) from the upper end to the lower end by a comb, combing the false hair tows for 10 periods according to the experiment requirement, 50 times per period, 2h of period interval, counting and recording the total hair number and the damaged hair number after 15min of each period combing, wherein the total hair number and the damaged hair number are respectively A ₁ -A ₁₀ 、D ₁ -D ₁₀ . Then:

d with 2 or 3 strands of false hair _i /A _i (i=1, 2, … …, 10) is present at 5% or more, or D _i /D _i-1 Judging that the comb resistance of the false hairline is unqualified when the number of the false hairline is less than or equal to 95%;

d with 2 strands of false hair _i /A _i (i=1, 2, … …, 10) are all < 5%, and D _i /D _i-1 When the carding resistance of the false hairline is more than 95%, the false hairline can be judged to be qualified;

when 3 bundles of false hair tows D _i /A _i (i=1, 2, … …, 10) are all < 5%, and D _i /D _i-1 When the total weight of the hair is more than 95%, judging that the combing resistance of the false hair is good;

for good-judging false hair tows, the hair is reprocessed or ironed by an electric splint, if the number of damaged hair can be recovered to be more than 0.5D ₁₀ It was determined that the hair prosthesis had excellent combing resistance.

Repeat molding durability: refers to the property of the wig that it can accommodate repeated switching of straight hair and curly hair.

The specific evaluation method comprises the following steps: selecting shaped hair-straightening wig tows (about 1000 wig tows with uniform fineness), extracting 100 wig tows to test the monofilament breaking strength, and marking the average value as F ₀ . Making into hair curler according to shaping processAfter 24 hours, making straight hair according to the shaping process requirement, counting as a repetition shaping period, performing 5 repetition shaping periods, extracting 100 wigs after each period is finished to test the breaking strength of the single filaments, and recording the average value as F in sequence ₁ ，F ₂ ，……，F ₁₀ . Then:

when F _i /F _i-1 (i=1, 2, … …, 10) is present at 90% or less or F ₁₀ /F ₀ When the number of the false hair is less than 60%, judging that the repeated modeling durability of the false hair is not qualified;

when F _i /F _i-1 (i=1, 2, … …, 10) are all > 90% and 60% or less F ₁₀ /F ₀ Judging that the repeated modeling durability of the false hair is qualified when the number of the false hair is less than 70%;

when F _i /F _i-1 (i=1, 2, … …, 10) are all > 90% and 70% or less F ₁₀ /F ₀ When the number of the false hair is less than 80%, the repeated modeling durability of the false hair is judged to be good;

when F _i /F _i-1 (i=1, 2, … …, 10) are > 90% and F ₁₀ /F ₀ And when the number of the repeated modeling of the false hair is more than or equal to 80%, the repeated modeling durability of the false hair is judged to be excellent.

Filament breaking strength after crimping: selecting shaped hair-straightening wig tows (about 300 wig tows with uniform fineness), making hair curls according to the shaping process requirement, and extracting 100 wig tows from the hair curls after 24 hours according to the section 5 of the GB/T13835.5 rabbit hair fiber test method: the method in the single fiber breaking strength and breaking elongation is used for testing the single fiber breaking strength.

Dyeing/fading effects: refers to the property that the color change degree is uniform and consistent after the same hairline is faded or dyed under the same condition.

The specific evaluation method comprises the following steps: 3 shaped black hair straightening wig tows (about 1000 hair straightening wig tows with uniform fineness) are selected, the hair is decolorized or dyed according to the requirement of a hair dyeing process, whether the degree of the decolorization or the dyeing change is uniform or not is scored, and the score is averaged. Two types of people (10 each) as in "2, subjective evaluation" were selected as subjects. The scale of evaluation of dyeing/fading effect and the vocabulary of description are shown in Table 6.

Table 6: dyeing/fading effect evaluation scale

Repeat staining durability: it means that the hairline can fade and dye; and the same false hair yarn has the property of uniform and consistent color change degree after being subjected to multiple fading or dyeing under the same condition.

The specific evaluation method comprises the following steps: 3 shaped black hair straightening wig tows (about 1000 hair straightening wig tows with uniform fineness) are selected, the hair is firstly decolorized according to the requirement of a hair dyeing process, dyeing is carried out after 72 hours, a dyeing period is calculated, 3 repeated dyeing periods (different colors dyed in each period) are carried out, and the decolorization and dyeing effects are evaluated according to the scale of the table 6 after each period is finished. Then:

when 3 periodic dyeing is uniform (namely, each wig filament bundle has a periodic dyeing effect less than 4 minutes), the repeated dyeing durability of the wig filament is not qualified;

when 3 periodic dyeing of 1 bundle or 2 bundles of false hair tows is uniform (namely, 3 periodic dyeing effects of 1 bundle or 2 bundles of false hair tows are all more than or equal to 4 minutes), the repeated dyeing durability of the false hair tows is qualified;

when 3 periodic dyeing of 3 bundles of false hair tows is uniform (namely, 3 periodic dyeing effects of 3 bundles of false hair tows are more than or equal to 4 minutes), repeated dyeing durability of the false hair tows is good;

When 3 cycles of dyeing of 3 bundles of false hair tows are uniform, and 3 cycles of fading are uniform (namely, 3 cycles of dyeing of 3 bundles of false hair tows have fading effects more than or equal to 4 minutes), the repeated dyeing durability of the false hair is excellent.

Degree of moisture: the water contact angle is evaluated by the contact angle of the hairline with deionized water, and the smaller the water contact angle is, the better the water wettability is. 100 or more wigs were closely arranged in parallel and tested by using an OCA40 type full-automatic fiber contact angle measuring instrument, which is a company of germany data physics, and the average value of 5 different points was obtained. Then:

when the water contact angle is less than 30 degrees, the water wettability is judged to be excellent;

when the contact angle of water is more than or equal to 30 and less than 45 degrees, judging that the water wettability is good;

when the contact angle of water is less than or equal to 45 degrees and less than 60 degrees, judging that the water wettability is general;

when the contact angle of water is smaller than or equal to 60 degrees and smaller than 75 degrees, the water wettability is judged to be poor;

when the water contact angle is more than 75 degrees, the water wettability is judged to be poor.

4. Special performance

Antistatic properties: the resistance of the fiber bundle was evaluated by mass specific resistance, which means the resistance of the fiber bundle having a current passing length of 1cm and a mass of 1g, and the result was an average of 5 samples by using an LFY-405 type fiber specific resistance meter.

Air permeability: the test was carried out according to the method of GB/T40357-2021 determination of air permeability of hairpiece for hair products, taking an average of at least 5.

Flame retardancy: the flame retardance is characterized by limiting oxygen index, and the flame retardance is tested according to the method in FZ/T50017-2011 oxygen index method of flame retardance test method of polyester fiber.

Heat resistance: the heat resistance was evaluated by the strength at break of the filaments at high temperature (100 ℃).

Antibacterial properties: evaluation of antimicrobial Properties of textiles according to GB/T20944.3-2008, section 3: the method in the oscillation method is tested to obtain the antibacterial rate to staphylococcus aureus and escherichia coli.

Mite resistance: the repellent rate test is carried out according to the repellent method in GB/T24259-2009 evaluation of the anti-mite performance of functional fibers.

Degradation rate:

degradation speed during use, after the hair-like tows (more than 1000) obtained in the corresponding examples and the comparative examples are normally used by 10 persons (the wearing time is more than or equal to 4 hours each day, the hair-like tows are cleaned once each day, the hair-like tows are stored in a plastic bag in a wiping way when not used, and the hair-like tows are collected after falling), and the quality loss ratio of the hair-like tows is tested.

After-abandoned degradation speed, referring to a test method of 'biodegradability' in EN 13432, the false hair tows (more than 1000) obtained in the corresponding examples and the control example are finally converted into the mass proportion of water, carbon dioxide and mineral substances after 6 months under aerobic composting conditions.

5. Safety and hygienic properties

pH value: the test was carried out according to the method of GB/T7573-2009 determination of pH value of aqueous textile extracts.

Formaldehyde content: determination of textile Formaldehyde according to GB/T2912.1-2009, section 1: determination of free and hydrolyzed Formaldehyde (Water extraction method) section 3 of GB/T2912.3-2009, textile Formaldehyde: the method in high performance liquid chromatography was tested.

Content of decomposable aromatic amine: the test was carried out according to the method in GB/T17592-2011 determination of textile Disable azo dyes and GB/T23344-2009 determination of textile 4-aminoazobenzene.

Peculiar smell: the method of GB/T23170-2019, wig cover and headwear for hair products, 5.3.3, was tested.

3. Reference test standards and literature:

degradable wig polylactic acid fiber and its production process [ P ]. CN 201210406770.7, 2012.

A degradable antibacterial flame-retarding PLA wig fibre and its preparing process [ P ]. CN 202010734342.1,2020.

PLA-based degradable antibacterial flame-retardant wig fiber and its preparation method [ P ]. CN 202010734831.7,2020.

Modified regenerated collagen fiber and method for producing the same [ P ]. CN 98117804.9,1998, available from Brillouin chemical Co., ltd.

Regenerated collagen fiber [ P ]. CN:00810216.3,2000 having excellent heat resistance.

Chen Weitai, sun Runjun hairpiece fibre tensile mechanical Property discussion [ J ]. University of Western An engineering, 2010, (1): 21-25

Li Ke, she Ting, jiang Jing, wang Shaofei preparation of protein/cellulose blend for wig and performance study [ J ]. Shanghai textile science and technology, 2018, volume 46 (2): 14-18, 21

Chen Wenjun Structure and Property study of wig fiber [ D ]. University of Western An engineering, 2016.

Zheng Yang,Chen JC,Ma YM,Chen GQ.Engineering Biosynthesis of Polyhydroxyalkanoates(PHA) for Diversity and Cost Reduction.Metabolic Engineering 58(2020)82-93(10.1016/j.ymben.2019.07.004)

GB/T2912.1-2009, determination of textile formaldehyde part 1: free and hydrolyzed formaldehyde (water extraction) [ S ].

GB/T2912.3-2009, determination of textile formaldehyde part 3: high performance liquid chromatography [ S ].

GB/T7573-2009 determination of pH value of textile aqueous extract [ S ].

GB/T13835.5-2009, rabbit hair fiber test method part 5: the breaking strength and the breaking elongation of the single fiber [ S ].

GB/T17592-2011, determination of azo dyes is disabled for textiles [ S ].

GB/T20944.3-2008, section 3, evaluation of antibacterial properties of textiles: oscillation method [ S ].

GB/T23170-2019, wig cover and headwear for hair products [ S ].

GB/T23344-2009 determination of textile 4-aminoazobenzene [ S ].

GB/T24259-2009 evaluation of mite resistance of functional fibers [ S ].

GB/T40357-2021 determination of air permeability of wig for hair products [ S ].

FZ/T50017-2011, oxygen index method [ S ] of polyester fiber flame retardant property test method.

T/ZZB 1605-2020, flame retardant polyester hairline for wig [ S ].

Example 1

Vacuum drying the raw materials at 70-100deg.C for 8-10 hr to control water content below 0.5%;

step one: according to the mass portion, 62.5 portions of P3HB4HB (the molar content of 4HB is 8%), 0.625 portions of chain extender X-U993, 0.5 portions of chain extender ADR4400, 0.5 portions of antioxidant 1010, 0.25 portions of antioxidant 1076, 0.25 portions of tungsten disulfide, 0.5 portions of titanium boride, 1.25 portions of nano silicon dioxide HB-630, 0.5 portions of calcium stearate, 0.75 portions of zinc stearate, 0.5 portions of titanate coupling agent AT1618, 0.25 portions of maleic anhydride, 0.25 portions of silane coupling agent KH570, 0.25 portions of anti-hydrolysis agent HD900A, 0.5 portions of anti-hydrolysis agent BTWR-500, 0.375 portions of polyethylene glycol-6000, 0.375 portions of rhamnolipid, 2 portions of ammonium polyphosphate, 3 portions of triphenyl phosphate and 5 portions of color master batch are weighed and are physically mixed, melted and cooled and granulated by a double screw extruder, the temperature of a material cylinder is set to 155-185 ℃ and the temperature of a ring blowing air is 50-60 ℃ to obtain outer layer granules;

Step two: 16 parts of P3HB4HB (the molar content of 4HB is 15%), 12 parts of PLA, 7 parts of PBAT, 0.5 part of chain extender X-U993, 0.375 part of chain extender ADR4400, 0.5 part of antioxidant 1010, 0.25 part of antioxidant 1076, 1.25 part of hollow glass microsphere, 0.75 part of boron nitride, 0.5 part of calcium stearate, 0.25 part of zinc stearate, 0.25 part of titanate coupling agent AT1618, 0.25 part of maleic anhydride, 0.25 part of silane coupling agent KH570, 0.25 part of hydrolysis inhibitor HD900A, 0.25 part of hydrolysis inhibitor BTWR-500, 0.25 part of polyethylene glycol-6000, 0.25 part of rhamnolipid, 1.5 part of ammonium polyphosphate, 2.5 parts of triphenyl phosphate and 4 parts of color master batch are weighed and physically mixed, melted and cooled and granulated by a double-screw extruder, the temperature of a charging barrel is set to 155-200 ℃, and the temperature of the ring blowing is set to 30-55 ℃ to obtain an inner layer;

step three: respectively injecting the outer layer granules and the inner layer granules into extrusion equipment with a heating device for melting after vacuum drying for 2-3 hours at 70-100 ℃, respectively spraying out a skin/sea component and a core/island component of the composite PHA pre-oriented yarn by a composite spinning component with a skin-core or island structure (see figure 1) through screw melting extrusion, setting the spinning temperature to 125-175 ℃, controlling the pressure in a melt metering pump to 10-15MPa and the spinning speed to 80-160m/min to obtain the composite PHA pre-oriented yarn;

Step four: the composite PHA pre-oriented yarn is cooled through a circular blowing channel with the length of 1-2m vertically, and the blowing temperature is 30-55 ℃;

step five: oiling the composite PHA pre-oriented yarn obtained by cooling in the step four by an oil roller;

step six: feeding the composite PHA pre-oriented yarn obtained in the fifth step into a hot roller and a winding device for stretching and winding, controlling the stretching temperature to be 85=120 ℃, the stretching and winding speed to be 200-640m/min, and the stretching ratio to be 2.5-4, and winding the obtained finished yarn on a bobbin;

step seven: checking, grading and packaging the full-wound bobbin obtained in the step six to obtain a composite PHA wig;

performing foaming, triple connection, post-treatment, shaping, conditioning and packaging on the composite PHA wig, wherein a steam cabinet is adopted for shaping in a curved hair shaping mode, the temperature is generally 70-105 ℃, and the shaping time is 25-60min; the hairpiece is shaped by adopting a steam cabinet in a hair straightening and shaping mode, the temperature is generally 80-118 ℃, and the shaping time is 30-65min, so that the hairpiece taking PHA as a base material is obtained.

Example 2

step one: weighing 50 parts of P3HB4HB (5% by mole of 4 HB), 12.5 parts of P3HB4HB (20% by mole of 4 HB), 0.5 part of chain extender LK4468, 0.625 part of chain extender ADR4400, 0.5 part of antioxidant 1024, 0.25 part of antioxidant 1076, 0.375 part of tungsten disulfide, 0.375 part of boron nitride, 1.25 part of nano silicon dioxide HB-630, 0.75 part of calcium stearate, 0.5 part of magnesium stearate, 0.375 part of titanate coupling agent AT1618, 0.25 part of maleic anhydride, 0.375 part of silane coupling agent KH550, 0.375 part of anti-hydrolytic agent HD900A, 0.375 part of anti-hydrolytic agent 936, 0.3 part of polyvinyl alcohol-2099, 0.45 part of rhamnolipid, 3.5 part of triphenyl phosphate, 1.5 part of toluene diphenyl phosphate and 5 parts of color master batch, melting and cooling by a twin screw extruder, granulating by setting the temperature of a feed cylinder to 155 ℃ and adopting an air blowing temperature of 50 ℃ to 60 ℃ to obtain external layer granules;

Step two: 13 parts of P3HB4HB (the molar content of 4HB is 15%), 16 parts of PPC, 6 parts of soybean protein fiber, 0.375 part of chain extender LK4468, 0.5 part of chain extender ADR4400, 0.5 part of antioxidant 1024, 0.25 part of antioxidant 1076, 1.5 parts of hollow glass microsphere, 0.5 part of carbon nano tube, 0.4 part of calcium stearate, 0.35 part of heat stabilizer DP1100, 0.25 part of titanate coupling agent AT1618, 0.25 part of maleic anhydride, 0.25 part of silane coupling agent KH550, 0.25 part of anti-hydrolysis agent HD900A, 0.25 part of anti-hydrolysis agent 936, 0.2 part of polyvinyl alcohol-2099, 0.3 part of rhamnose ester, 2.75 parts of triphenyl phosphate, 1.25 parts of toluene diphenyl phosphate and 4 parts of color master batch are weighed and physically mixed, melted by a double-screw extruder and cooled to granulate, the temperature of a charging barrel is set to 155-200 ℃, and the temperature of air blowing is set to 30-55 ℃ by adopting a circular blowing, so as to obtain inner layer granules;

step six: feeding the composite PHA pre-oriented yarn obtained in the fifth step into a hot roller and a winding device for stretching and winding, controlling the stretching temperature to be 85-120 ℃, the stretching and winding speed to be 200-640m/min, and the stretching ratio to be 2.5-4, and winding the obtained finished yarn on a bobbin;

Example 3

step one: weighing 5 parts of P3HB4HB (5% by mole of 4 HB), 57.5 parts of P3HB4HB (10% by mole of 4 HB), 0.4 parts of chain extender 6901, 0.725 parts of chain extender ADR4400, 0.4 parts of antioxidant 1024, 0.35 parts of antioxidant T501, 0.375 parts of tungsten disulfide, 0.3 parts of carbon nano tube, 1.325 parts of nano silicon dioxide HB-630, 0.625 parts of zinc stearate, 0.625 parts of barium stearate, 0.25 parts of coupling agent BYCC 8003, 0.375 parts of maleic anhydride, 0.375 parts of silane coupling agent A-172, 0.375 parts of hydrolysis inhibitor BTWR-500, 0.375 parts of hydrolysis inhibitor 936, 0.45 parts of rhamnolipid, 0.3 parts of benzyl triethyl ammonium chloride, 2.5 parts of ammonium polyphosphate, 2.5 parts of toluene diphenyl phosphate and 5 parts of color master batch, melting and cooling by a twin screw extruder, granulating at 185 ℃ and adopting a ring blowing air temperature of 50-60 ℃ to obtain external layer granules;

Step two: 15 parts of P3HB4HB (15 mol content of 4 HB), 12 parts of alginate fiber, 8 parts of PBS, 0.3 part of chain extender 6901, 0.575 part of chain extender ADR4400, 0.4 part of antioxidant 1024, 0.35 part of antioxidant T501, 1.375 part of hollow glass microsphere, 0.375 part of tungsten disulfide, 0.25 nano titanium dioxide, 0.3 part of calcium stearate, 0.45 part of methyl thioglycolate, 0.2 part of coupling agent BYKC8003, 0.275 part of maleic anhydride, 0.275 part of silane coupling agent A-172, 0.25 part of hydrolysis inhibitor BTWR-500, 0.25 part of hydrolysis inhibitor 936, 0.3 part of rhamnolipid, 0.2 part of benzyl triethyl ammonium chloride, 2 parts of ammonium polyphosphate, 2 parts of toluene diphenyl phosphate and 4 parts of color master batch are weighed and are physically mixed, melted and cooled by a double screw extruder to pelletize, the temperature of a material cylinder is set to 155-200 ℃, and the temperature of air blowing is set to 30-55 ℃ to obtain inner layer granules;

Example 4

Step two: 15 parts of P3HB4HB (the molar content of 4HB is 10%), 10 parts of PBA, 10 parts of PBT, 0.5 part of chain extender X-U993, 0.375 part of chain extender ADR4400, 0.5 part of antioxidant 1010, 0.25 part of antioxidant 1076, 1.25 parts of hollow glass microsphere, 0.75 part of boron nitride, 0.5 part of calcium stearate, 0.25 part of zinc stearate, 0.25 part of titanate coupling agent AT1618, 0.25 part of maleic anhydride, 0.25 part of silane coupling agent KH570, 0.25 part of hydrolysis inhibitor HD900A, 0.25 part of hydrolysis inhibitor BTWR-500, 0.25 part of polyethylene glycol-6000, 0.25 part of rhamnolipid, 1.5 part of ammonium polyphosphate, 2.5 parts of triphenyl phosphate and 4 parts of color master batch are weighed and physically mixed, melted and cooled and granulated by a double-screw extruder, the temperature of a charging barrel is set to 155-200 ℃, and the temperature of the ring blowing is set to 30-55 ℃ to obtain an inner layer;

Example 5

Step two: 10.5 parts of P3HB4HB (the molar content of 4HB is 20%), 15 parts of PLA, 9.5 parts of regenerated cellulose, 0.5 part of chain extender X-U993, 0.375 part of chain extender ADR4400, 0.5 part of antioxidant 1010, 0.25 part of antioxidant 1076, 1.25 parts of hollow glass microsphere, 0.75 part of boron nitride, 0.5 part of calcium stearate, 0.25 part of zinc stearate, 0.25 part of titanate coupling agent AT1618, 0.25 part of maleic anhydride, 0.25 part of silane coupling agent KH570, 0.25 part of hydrolysis inhibitor HD900A, 0.25 part of hydrolysis inhibitor BTWR-500, 0.25 part of polyethylene glycol-6000, 0.25 part of rhamnolipid, 1.5 part of ammonium polyphosphate, 2.5 parts of triphenyl phosphate and 4 parts of color master batch are weighed and are physically mixed, melted and cooled and granulated by a double screw extruder, the temperature of a material barrel is set to 155-200 ℃, and the temperature of blowing air is set to 25-60 ℃ to obtain inner layer granules;

Comparative example 1

A certain brand of wig is made by a real person (see fig. 2).

Comparative example 2

A certain brand of wig is made of protein fiber as a base material (see fig. 3).

Comparative example 3

A brand of wig was made with PAN as a base material (see fig. 4).

Comparative example 4 (compared to example 1, without P3HB4 HB)

step one: according to the mass portion, 27.5 portions of PBAT, 35 portions of PLA, 0.625 portions of chain extender X-U993, 0.5 portion of chain extender ADR4400, 0.5 portion of antioxidant 1010, 0.25 portion of antioxidant 1076, 0.25 portion of tungsten disulfide, 0.5 portion of titanium boride, 1.25 portion of nano silicon dioxide HB-630, 0.5 portion of calcium stearate, 0.75 portion of zinc stearate, 0.5 portion of titanate coupling agent AT1618, 0.25 portion of maleic anhydride, 0.25 portion of silane coupling agent KH570, 0.25 portion of hydrolysis-resisting agent HD900A, 0.5 portion of hydrolysis-resisting agent BTWR-500, 0.375 portion of polyethylene glycol-6000, 0.375 portion of rhamnose ester, 2 portions of ammonium polyphosphate, 3 portions of triphenyl phosphate and 5 portions of color master batch are weighed and are physically mixed, melted and cooled and granulated by a double screw extruder, the temperature of a charging barrel is set to 150-190 ℃, and the air blowing temperature is set to 50-60 ℃ to obtain outer layer granules;

step two: weighing 24 parts of PLA, 11 parts of PBAT, 0.5 part of chain extender X-U993, 0.375 part of chain extender ADR4400, 0.5 part of antioxidant 1010, 0.25 part of antioxidant 1076, 1.25 part of hollow glass microsphere, 0.75 part of boron nitride, 0.5 part of calcium stearate, 0.25 part of zinc stearate, 0.25 part of titanate coupling agent AT1618, 0.25 part of maleic anhydride, 0.25 part of silane coupling agent KH570, 0.25 part of hydrolysis inhibitor HD900A, 0.25 part of hydrolysis inhibitor BTWR-500, 0.25 part of polyethylene glycol-6000 and 0.25 part of rhamnolipid, 1.5 part of ammonium polyphosphate, 2.5 parts of triphenyl phosphate and 4 parts of color master batch, melting and cooling to granulate by a double-screw extruder, setting the temperature of a charging barrel to 155-200 ℃, and adopting circular blowing AT a blowing temperature of 30-55 ℃ to obtain inner layer granules;

Step three: respectively injecting the outer layer granules and the inner layer granules into extrusion equipment with a heating device for melting after vacuum drying for 2-3 hours at 70-100 ℃, and respectively spraying out skin/sea components and core/island components of the composite pre-oriented yarn by a composite spinning component with a skin-core or sea-island structure through screw melt extrusion, wherein the spinning temperature is set to 125-175 ℃, the pressure in a melt metering pump is controlled to 10-15MPa, and the spinning speed is 80-160m/min, so as to obtain the composite pre-oriented yarn;

step four: cooling the composite pre-oriented yarn through a circular blowing channel with the length of 1-2m vertically, wherein the blowing temperature is 30-55 ℃;

step five: oiling the composite pre-oriented yarn obtained in the fourth step through an oil roller;

step six: feeding the composite pre-oriented yarn obtained in the fifth step into a hot roller and a winding device for stretching and winding, controlling the stretching temperature to be 85-120 ℃, the stretching and winding speed to be 200-640m/min and the stretching ratio to be 2.5-4, and winding the obtained finished yarn on a bobbin;

step seven: checking, grading and packaging the full-wound bobbins obtained in the step six to obtain the composite false hairline;

the composite wig is subjected to foaming, triple machine, post treatment, shaping, moisture regaining and packaging, and the hair curling shaping mode adopts steam cabinet shaping, wherein the temperature is generally 70-105 ℃ and the shaping time is 25-60min; the hairpiece is obtained by setting hair directly with steam cabinet at 80-118 deg.C for 30-65min (see figure 5).

Comparative example 5 (compared with example 1, the wig was not of skin-core or sea-island type structure)

step one: according to the parts by mass, 62.5 parts of P3HB4HB (the molar content of 4HB is 8%), 16 parts of P3HB4HB (the molar content of 4HB is 15%), 12 parts of PLA, 7 parts of PBAT, 1.125 parts of chain extender X-U993, 0.875 parts of chain extender ADR4400, 1 part of antioxidant 1010, 0.5 parts of antioxidant 1076, 1.25 parts of hollow glass microsphere, 0.75 parts of boron nitride, 0.25 parts of tungsten disulfide, 0.5 parts of titanium boride, 1.25 parts of nano silicon dioxide HB-630, 1 part of calcium stearate, 1 part of zinc stearate, 0.75 parts of titanate coupling agent AT1618, 0.5 parts of maleic anhydride, 0.5 part of silane coupling agent KH570, 0.5 parts of anti-hydrolytic agent HD900A, 0.75 parts of anti-hydrolytic agent BTWR-500, 0.625 parts of polyethylene glycol-6000, 0.625 parts of murine ester, 3.5 parts of ammonium polyphosphate, 5.5 parts of triphenyl phosphate and 9 parts of masterbatch are weighed, are subjected to physical mixing, and the mixture is carried out, and the mixture is cooled by a twin-screw extruder, and the temperature is set to be 55 ℃ to obtain a blowing drum, and the blowing temperature is set to be 55 ℃;

step two: vacuum drying the granules at 70-100 ℃ for 2-3h, then co-injecting the granules into extrusion equipment with a heating device for melting, and performing screw melt extrusion, wherein the spinning temperature is set to 125-175 ℃, the pressure in a melt metering pump is controlled to 10-15MPa, and the spinning speed is controlled to 80-160m/min, so as to obtain a composite PHA pre-oriented yarn;

Step three: the composite PHA pre-oriented yarn is cooled through a circular blowing channel with the length of 1-2m vertically, and the blowing temperature is 30-55 ℃;

step four: oiling the composite PHA pre-oriented yarn obtained by cooling in the step three by an oil roller;

step five: feeding the composite PHA pre-oriented yarn obtained in the step four into a hot roller and a winding device for stretching and winding, controlling the stretching temperature to be 85-120 ℃, the stretching and winding speed to be 200-640m/min and the stretching ratio to be 2.5-4, and winding the obtained finished yarn on a bobbin;

step six: checking, grading and packaging the full-wound bobbin obtained in the step five to obtain a composite PHA wig;

Comparative example 6 (setting time was different from that of example 1)

performing foaming, triple connection, post-treatment, shaping, conditioning and packaging on the composite PHA wig, wherein a steam cabinet is adopted for shaping in a curved hair shaping mode, and the shaping time is 1-5min at the temperature of 70-105 ℃ generally; the hairpiece is shaped by adopting a steam cabinet in a hair straightening and shaping mode, the temperature is generally 80-118 ℃, and the shaping time is 90-120min, so that the hairpiece taking PHA as a base material is obtained.

Comparative example 7 (setting temperature was different from that of example 1)

performing foaming, triple connection, post-treatment, shaping, conditioning and packaging on the composite PHA wig, wherein a steam cabinet is adopted for shaping in a curved hair shaping mode, the temperature is generally 120-140 ℃, and the shaping time is 25-60min; the hairpiece is shaped by adopting a steam cabinet in a hair straightening and shaping mode, the temperature is generally 125-148 ℃, and the shaping time is 30-65min, so that the hairpiece taking PHA as a base material is obtained.

Comparative example 8 (inner substrate did not contain P3HB4HB compared with example 1)

Step two: 22 parts of PLA, 13 parts of PBAT, 0.5 part of chain extender X-U993, 0.375 part of chain extender ADR4400, 0.5 part of antioxidant 1010, 0.25 part of antioxidant 1076, 1.25 part of hollow glass microsphere, 0.75 part of boron nitride, 0.5 part of calcium stearate, 0.25 part of zinc stearate, 0.25 part of titanate coupling agent AT1618, 0.25 part of maleic anhydride, 0.25 part of silane coupling agent KH570, 0.25 part of hydrolysis inhibitor HD900A, 0.25 part of hydrolysis inhibitor BTWR-500, 0.25 part of polyethylene glycol-6000 and 0.25 part of rhamnolipid, 1.5 part of ammonium polyphosphate, 2.5 parts of triphenyl phosphate and 4 parts of color master batch are weighed and are physically mixed, melted and cooled to be granulated by a double-screw extruder, the temperature of a charging barrel is set to be 155-200 ℃, and the temperature of blowing is 30-55 ℃ by adopting circular blowing, so as to obtain inner layer granules;

Comparative example 9 (in contrast to example 1, the outer substrate was not pure P3HB4HB, partially replaced with PBS)

step one: according to the parts by weight, 27.5 parts of P3HB4HB (the molar content of 4HB is 8%), 35 parts of PBS, 0.625 parts of chain extender X-U993, 0.5 parts of chain extender ADR4400, 0.5 parts of antioxidant 1010, 0.25 parts of antioxidant 1076, 0.25 parts of tungsten disulfide, 0.5 parts of titanium boride, 1.25 parts of nano silicon dioxide HB-630, 0.5 parts of calcium stearate, 0.75 parts of zinc stearate, 0.5 parts of titanate coupling agent AT1618, 0.25 parts of maleic anhydride, 0.25 parts of silane coupling agent KH570, 0.25 parts of anti-hydrolysis agent HD900A, 0.5 parts of anti-hydrolysis agent BTWR-500, 0.375 parts of polyethylene glycol-6000, 0.375 parts of rhamnolipid, 2 parts of ammonium polyphosphate, 3 parts of triphenyl phosphate and 5 parts of color master batch are weighed, and are physically mixed, melted and cooled and granulated by a double screw extruder, the temperature of the material barrel is set to 155-185 ℃, and the air blowing temperature is 50-60 ℃ to obtain the outer layer granulated material;

Comparative example 10 (in comparison with example 1, no coupling agent was added)

step one: according to the mass portion, 62.5 portions of P3HB4HB (the molar content of 4HB is 8%), 0.625 portions of chain extender X-U993, 0.5 portions of chain extender ADR4400, 0.5 portions of antioxidant 1010, 0.25 portions of antioxidant 1076, 0.25 portions of tungsten disulfide, 0.5 portions of titanium boride, 1.25 portions of nano silicon dioxide HB-630, 0.5 portions of calcium stearate, 0.75 portions of zinc stearate, 0.25 portions of hydrolysis inhibitor HD900A, 0.5 portions of hydrolysis inhibitor BTWR-500, 0.375 portions of polyethylene glycol-6000, 0.375 portions of rhamnolipid, 2 portions of ammonium polyphosphate, 3 portions of triphenyl phosphate and 5 portions of color master batch are weighed and are physically mixed, melted by a double screw extruder, cooled and granulated, the temperature of a charging barrel is set to 155-185 ℃, and the temperature of air supply is 50-60 ℃ to obtain outer layer granules;

Step two: 16 parts of P3HB4HB (the molar content of 4HB is 15%), 12 parts of PLA, 7 parts of PBAT, 0.5 part of chain extender X-U993, 0.375 part of chain extender ADR4400, 0.5 part of antioxidant 1010, 0.25 part of antioxidant 1076, 1.25 parts of hollow glass microsphere, 0.75 part of boron nitride, 0.5 part of calcium stearate, 0.25 part of zinc stearate, 0.25 part of hydrolysis inhibitor HD900A, 0.25 part of hydrolysis inhibitor BTWR-500, 0.25 part of polyethylene glycol-6000, 0.25 part of rhamnolipid, 1.5 part of ammonium polyphosphate, 2.5 parts of triphenyl phosphate and 4 parts of color master batch are weighed and physically mixed, melted by a double-screw extruder, cooled and granulated, the temperature of a charging barrel is set to 155-200 ℃, and the air supply temperature is 30-55 ℃ by adopting circular blowing, so as to obtain inner-layer granules;

Comparative example 11 (compared to example 1, no surfactant was added)

step one: according to the mass portion, 62.5 portions of P3HB4HB (the molar content of 4HB is 8%), 0.625 portions of chain extender X-U993, 0.5 portions of chain extender ADR4400, 0.5 portions of antioxidant 1010, 0.25 portions of antioxidant 1076, 0.25 portions of tungsten disulfide, 0.5 portions of titanium boride, 1.25 portions of nano silicon dioxide HB-630, 0.5 portions of calcium stearate, 0.75 portions of zinc stearate, 0.5 portions of titanate coupling agent AT1618, 0.25 portions of maleic anhydride, 0.25 portions of silane coupling agent KH570, 0.25 portions of anti-hydrolysis agent HD900A, 0.5 portions of anti-hydrolysis agent BTWR-500, 2 portions of ammonium polyphosphate, 3 portions of triphenyl phosphate and 5 portions of color master batch are weighed and are physically mixed, melted and cooled to granulate through a double screw extruder, the temperature of a charging barrel is set to 155-185 ℃, and the temperature of ring blowing is 50-60 ℃ to obtain outer layer granules;

Step two: 16 parts of P3HB4HB (the molar content of 4HB is 15%), 12 parts of PLA, 7 parts of PBAT, 0.5 part of chain extender X-U993, 0.375 part of chain extender ADR4400, 0.5 part of antioxidant 1010, 0.25 part of antioxidant 1076, 1.25 part of hollow glass microsphere, 0.75 part of boron nitride, 0.5 part of calcium stearate, 0.25 part of zinc stearate, 0.25 part of titanate coupling agent AT1618, 0.25 part of maleic anhydride, 0.25 part of silane coupling agent KH570, 0.25 part of anti-hydrolysis agent HD900A, 0.25 part of anti-hydrolysis agent BTWR-500, 1.5 part of ammonium polyphosphate, 2.5 parts of triphenyl phosphate and 4 parts of color master batch are weighed and are physically mixed, melted and cooled by a double screw extruder for granulation, the temperature of a charging barrel is set to 155-200 ℃, and the temperature of air blowing is 30-55 ℃ by adopting circular blowing, so as to obtain inner layer granules;

Control 12 (compared to example 1, rhamnolipid is replaced by sodium petroleum sulfonate)

step one: according to the mass portion, 62.5 portions of P3HB4HB (the molar content of 4HB is 8%), 0.625 portions of chain extender X-U993, 0.5 portions of chain extender ADR4400, 0.5 portions of antioxidant 1010, 0.25 portions of antioxidant 1076, 0.25 portions of tungsten disulfide, 0.5 portions of titanium boride, 1.25 portions of nano silicon dioxide HB-630, 0.5 portions of calcium stearate, 0.75 portions of zinc stearate, 0.5 portions of titanate coupling agent AT1618, 0.25 portions of maleic anhydride, 0.25 portions of silane coupling agent KH570, 0.25 portions of anti-hydrolysis agent HD900A, 0.5 portions of anti-hydrolysis agent BTWR-500, 0.375 portions of polyethylene glycol-6000, 0.375 portions of petroleum sodium sulfonate, 2 portions of ammonium polyphosphate, 3 portions of triphenyl phosphate and 5 portions of color master batch are weighed and are physically mixed, melted and cooled and granulated by a double screw extruder, the temperature of a material barrel is set to 155-185 ℃ and the temperature of a blowing ring is set to 50-60 ℃ to obtain outer layer granules;

Step two: 16 parts of P3HB4HB (the molar content of 4HB is 15%), 12 parts of PLA, 7 parts of PBAT, 0.5 part of chain extender X-U993, 0.375 part of chain extender ADR4400, 0.5 part of antioxidant 1010, 0.25 part of antioxidant 1076, 1.25 part of hollow glass microsphere, 0.75 part of boron nitride, 0.5 part of calcium stearate, 0.25 part of zinc stearate, 0.25 part of titanate coupling agent AT1618, 0.25 part of maleic anhydride, 0.25 part of silane coupling agent KH570, 0.25 part of hydrolysis inhibitor HD900A, 0.25 part of hydrolysis inhibitor BTWR-500, 0.25 part of polyethylene glycol-6000, 0.25 part of sodium petroleum sulfonate, 1.5 part of ammonium polyphosphate, 2.5 parts of triphenyl phosphate and 4 parts of color master batch are weighed and physically mixed, melted and cooled and granulated by a double-screw extruder, the temperature of a charging barrel is set to 155-200 ℃, and the temperature of the ring blowing is set to 30-55 ℃ to obtain an inner layer;

Comparative example 13 (the ratio of flame retardant was different from that of example 1)

step one: according to the parts by weight, 62.5 parts of P3HB4HB (the molar content of 4HB is 8%), 0.625 parts of chain extender X-U993, 0.5 parts of chain extender ADR4400, 0.5 parts of antioxidant 1010, 0.25 parts of antioxidant 1076, 0.25 parts of tungsten disulfide, 0.5 parts of titanium boride, 1.25 parts of nano silicon dioxide HB-630, 0.5 parts of calcium stearate, 0.75 parts of zinc stearate, 0.5 parts of titanate coupling agent AT1618, 0.25 parts of maleic anhydride, 0.25 parts of silane coupling agent KH570, 0.25 parts of anti-hydrolysis agent HD900A, 0.5 parts of anti-hydrolysis agent BTWR-500, 0.375 parts of polyethylene glycol-6000, 0.375 parts of rhamnolipid, 0.5 parts of ammonium polyphosphate, 4.5 parts of triphenyl phosphate and 5 parts of color master batch are weighed, and are physically mixed, melted and cooled and granulated by a double screw extruder, the temperature of a cylinder is set to 155-185 ℃, and the temperature of blowing air is 50-60 ℃ to obtain external layer granules;

Step two: 16 parts of P3HB4HB (the molar content of 4HB is 15%), 12 parts of PLA, 7 parts of PBAT, 0.5 part of chain extender X-U993, 0.375 part of chain extender ADR4400, 0.5 part of antioxidant 1010, 0.25 part of antioxidant 1076, 1.25 part of hollow glass microsphere, 0.75 part of boron nitride, 0.5 part of calcium stearate, 0.25 part of zinc stearate, 0.25 part of titanate coupling agent AT1618, 0.25 part of maleic anhydride, 0.25 part of silane coupling agent KH570, 0.25 part of hydrolysis inhibitor HD900A, 0.25 part of hydrolysis inhibitor BTWR-500, 0.25 part of polyethylene glycol-6000, 0.25 part of rhamnolipid, 0.4 part of ammonium polyphosphate, 3.6 part of triphenyl phosphate and 4 parts of color master batch are weighed and physically mixed, melted and cooled and granulated by a double-screw extruder, the temperature of a charging barrel is set to 155-200 ℃, and the temperature of the ring blowing is set to 30-55 ℃ to obtain an inner layer;

The test results of each example and comparative example are shown in tables 7-8, and the unlabeled items are straight hair test results except for the hair curling performance and the labeled items.

Table 7: test results of examples 1 to 5 and comparative examples 1 to 5

Table 8: test results of example 1 and comparative examples 6 to 13

The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.

In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Claims

1. The wig is characterized by comprising an outer layer structure and an inner layer structure;

the outer layer structure comprises an outer layer base material and an outer layer auxiliary material, and the outer layer base material comprises P3HB4HB;

the inner layer structure comprises an inner layer base material and an inner layer auxiliary material, and the inner layer base material comprises P3HB4HB.

2. Wig according to claim 1, wherein said 4HB molar content in P3HB4HB is between 0-20%, preferably said outer substrate comprises one or a combination of two or more of the different 4HB molar contents of P3HB4HB.

3. The hairpiece of claim 1 or 2, wherein the inner substrate further comprises one or a combination of two or more of PBAT, PBS, PBA, PBT, PLA, PPC, regenerated cellulose, alginate fiber or soy protein fiber.

4. A hairpiece according to claim 3, wherein said inner substrate is selected from any one of the group consisting of:

a) P3HB4HB, PLA and PBAT, wherein the mass ratio of P3HB4HB, PLA and PBAT is (10-20): (10-15): (5-10);

b) P3HB4HB, PPC and soybean protein fiber, wherein, the mass ratio of P3HB4HB, PPC and soybean protein fiber is (10-15): (10-20): (5-10);

c) P3HB4HB, seaweed fiber and PBS, wherein the mass ratio of P3HB4HB, seaweed fiber and PBS is (10-20): (10-15): (5-10);

d) P3HB4HB, PBA and PBT, wherein the mass ratio of P3HB4HB, PBA and PBT is (10-25): (10-20): (10-20);

e) P3HB4HB, PLA and regenerated cellulose, wherein the mass ratio of P3HB4HB, PLA and regenerated cellulose is (5-15): (10-25): (5-15).

5. The wig according to any of claims 1 to 4, wherein the outer-layer auxiliary material or the inner-layer auxiliary material comprises one or a combination of two or more of a heat stabilizer, a chain extender, an antioxidant, a nucleating agent, a coupling agent, an anti-hydrolysis agent, a flame retardant, a surfactant, and a masterbatch, respectively.

6. The wig according to claim 5, wherein,

the heat stabilizer is one or more selected from calcium stearate, zinc stearate, magnesium stearate, barium stearate, methyl thioglycolate and heat stabilizer DP 1100;

the coupling agent is one or more selected from titanate coupling agent AT1618, maleic anhydride, coupling agent BYKC8003, silane coupling agent A-172, silane coupling agent KH550 and silane coupling agent KH 570;

the flame retardant is one or more selected from ammonium polyphosphate, triphenyl phosphate and toluene diphenyl phosphate;

the surfactant is one or more selected from polyethylene glycol, polyvinyl alcohol, rhamnolipid and quaternary ammonium salt surfactant; further, the polyethylene glycol is one or more of polyethylene glycol-3000, polyethylene glycol-6000, polyethylene glycol-10000 and polyethylene glycol-20000; the polyvinyl alcohol is one or more of polyvinyl alcohol 1799, polyvinyl alcohol 2099, polyvinyl alcohol 2499 and polyvinyl alcohol 2699; the quaternary ammonium salt type surfactant is one or more of benzyl triethyl ammonium chloride, didodecyl dimethyl ammonium chloride, cetyl trimethyl ammonium chloride and octadecyl trimethyl ammonium chloride;

7. The hairpiece of any of claims 1-6, wherein the hairpiece has a skin-core or islands-in-the-sea construction, wherein the outer layer is a skin layer or sea component and the inner layer is a core layer or island component.

8. A method of making a hairpiece as claimed in any one of claims 1 to 7, wherein the method comprises separately melt granulating the outer layer structure and the inner layer structure, spinning, cooling, oiling and stretch-winding.

9. The preparation method according to claim 8, wherein the preparation method comprises the steps of:

step one: weighing 35-90 parts of outer layer base material and 0-36 parts of outer layer auxiliary material by mass, mixing, melting by a double screw extruder, cooling and granulating, wherein the temperature of a charging barrel is set to be 130-210 ℃, and the temperature of the charging barrel is set to be 18-65 ℃ by adopting circular blowing, so as to obtain outer layer granules;

step two: weighing 10-60 parts of inner base material and 0-29 parts of inner auxiliary material by mass, mixing, melting by a double-screw extruder, cooling and granulating, wherein the temperature of a charging barrel is set to be 130-210 ℃, and the temperature of the charging barrel is set to be 18-65 ℃ by adopting circular blowing, so as to obtain inner granular materials;

preferably, the method further comprises the steps of beating and shaping the finished silk obtained in the step six.

10. The method of claim 9, wherein the styling is hair curling styling or hair straightening styling; wherein,