CN116180273A - Photosensitive silk thread and preparation method thereof - Google Patents

Photosensitive silk thread and preparation method thereof Download PDF

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Publication number
CN116180273A
CN116180273A CN202310209081.5A CN202310209081A CN116180273A CN 116180273 A CN116180273 A CN 116180273A CN 202310209081 A CN202310209081 A CN 202310209081A CN 116180273 A CN116180273 A CN 116180273A
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photosensitive
parts
acetate fiber
wire according
prepared
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刘伟
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Dongguan Bosti New Material Co ltd
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Dongguan Bosti New Material Co ltd
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/02—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/18—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from other substances
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Manufacturing & Machinery (AREA)
  • Coloring (AREA)

Abstract

The application relates to the technical field of photosensitive wires, in particular to a photosensitive wire and a preparation method thereof, wherein the photosensitive wire is prepared from the following raw materials in parts by weight: 5-15 parts of photosensitive resin matrix, 10-20 parts of PET (polyethylene terephthalate) slice, 1-2 parts of compatilizer, 10-15 parts of acetate fiber and 0-1 part of other auxiliary agent; each part of photosensitive resin matrix is prepared from a photosensitive material, polyester polyol and polyester resin according to the weight ratio of 3: (10-15): (20-35) melting and preparing. The photosensitive silk yarn prepared from the raw materials can present different colors along with the intensity change of light, so that the colors are dynamically changed, and the photosensitive silk yarn is long in duration and not easy to fade. And the fabric prepared by the photosensitive silk thread has good softness, good air permeability, uniform photochromic and long photochromic retention time.

Description

Photosensitive silk thread and preparation method thereof
Technical Field
The application relates to the technical field of photosensitive wires, in particular to a photosensitive wire and a preparation method thereof.
Background
Along with the improvement of the living standard of people, the requirements of people on comfort, functionality, individuation and the like of the clothing fabric are higher, and especially on the color of the fabric, the previous requirements of people on the color are only rich in variety, but along with the development of technology, people want the color to be changed from static state to dynamic state, and people explore the photochromic textile fabric.
The photochromic textile fabric refers to a fabric with color changed under the irradiation of light sources such as sunlight or ultraviolet light, and the color is changed back to the original color reversibly after the light is lost. However, the process for preparing the photochromic fabric in the prior art generally comprises directly coating the photochromic paint (such as printing ink and pigment printing) on the fabric or impregnating the photochromic paint on the textile silk threads, the fabric coating method has the defects of weak photochromic durability and poor air permeability, the silk threads are fully covered by the photochromic paste, the characteristics (such as softness and air permeability) of the silk threads are affected, and the like, and the photochromic paste is wasted.
Disclosure of Invention
In order to solve the problems of poor durability and air permeability of the photosensitive color of the fabric, the application provides a photosensitive silk thread and a preparation method thereof.
In a first aspect, the present application provides a photosensitive wire, which adopts the following technical scheme:
the photosensitive silk thread is prepared from the following raw materials in parts by weight:
5-15 parts of photosensitive resin matrix
10-20 parts of PET slice
1-2 parts of compatilizer
10-15 parts of acetate fiber
0-1 part of other auxiliary agent
Each part of photosensitive resin matrix is prepared from a photosensitive material, polyester polyol and polyester resin according to the weight ratio of 3: (10-15): (20-35) melting and preparing.
By adopting the technical scheme, the prepared photosensitive silk thread can present different colors along with the intensity change of light, so that the colors are dynamically changed, and the duration is long, and the color is not easy to fade. The fabric prepared by the photosensitive silk thread has good softness, good air permeability, uniform light-induced color change and long light-induced color retention time.
The photosensitive resin matrix has firm photochromic property, is added into the photosensitive silk thread by a blending melt spinning method, and can change color under different illumination conditions, so that the fabric prepared from the photosensitive resin matrix has dynamic color change and can be kept for a long time. The photosensitive material, the polyester polyol and the polyester resin are fused to prepare the photosensitive resin matrix by reasonable proportion, which is favorable for uniformly distributing the photosensitive material and keeping the photosensitive material in the photosensitive silk thread for a long time. The polyester resin has good transparency and high brightness, and can be used as a carrier of a photosensitive material without affecting the color change of the photosensitive material. However, the poor adhesion between the polyester resin and the photosensitive material tends to cause uneven distribution of the photosensitive material in the photosensitive resin matrix, resulting in uneven color distribution of the photosensitive wire and poor color effect. Therefore, the polyester polyol participates in preparing the photosensitive resin matrix polyester polyol, has good adhesive force, can improve the adhesion of the ester resin and the photosensitive material, ensures that the photosensitive material can be uniformly distributed in the photosensitive resin matrix, and further improves the color effect of the photosensitive wire.
The PET slice can improve the flexibility of the photosensitive silk thread, and the acetate fiber can improve the air permeability of the photosensitive silk thread. However, the physical properties of the photosensitive resin matrix, the PET slice and the acetate fiber are poor, the compatibility is poor, and the photosensitive thread is easy to prepare, so that the phenomena of pimple, fracture and the like of the photosensitive thread are easy to occur. In contrast, the compatibility of the photosensitive resin matrix, the PET slice and the acetate fiber is improved by adding the compatilizer, so that the prepared photosensitive wire has smooth surface and is not easy to break.
Preferably, the acetate fiber is modified acetate fiber, and is prepared by the following method:
a: dissolving acetate fibers in glacial acetic acid to obtain acetate fiber solution;
b: dissolving lignin in a sulfite solution to obtain a lignin-sulfite solution, adding acrylic acid into the lignin-sulfite solution, heating to 50-60 ℃, dropwise adding hydrogen peroxide-ferrous sulfate for reaction, precipitating, and filtering to obtain modified lignin;
c: adding the modified lignin into the acetate fiber solution, stirring, heating to 70-80 ℃, adding 3-phenylpropionyl chloride and epoxy chloropropane, reacting for 4-5h, cooling to 20-30 ℃, dropwise adding triethylamine to adjust the pH to 6.5-7.5, filtering, and drying to obtain the modified acetate fiber.
The acetate fiber is used for preparing the photosensitive silk thread and is used for preparing the fabric, the gloss of the fabric can be improved, the touch sense is soft and smooth, the fabric is very comfortable to be adhered to the skin, and the air permeability is good. However, acetate fibers are not acid-base resistant and organic-matter-resistant, and a cleaning agent containing acid-base and organic matter is not very used, so that the fabric containing acetate fibers is troublesome to handle. In contrast, the acid-alkali resistance and the organic resistance of the acetate fiber are improved by modifying the acetate fiber, so that the treatment of the acetate-containing fabric is facilitated.
According to the modified cellulose acetate fiber, lignin is modified, so that the modified lignin reacts with the cellulose acetate fiber to obtain the modified cellulose acetate fiber, and the modified cellulose acetate fiber has good acid and alkali resistance and organic resistance. The fabric prepared by using the photosensitive silk thread has good acid and alkali resistance and organic resistance, and is easy to manage. Preferably, the modified acetate fiber comprises the following materials in parts by weight:
30-40 parts of acetate fiber
200-300 parts of glacial acetic acid
10-15 parts of lignin
40-60 parts of sulfite solution
Acrylic acid 15-20 parts
Hydrogen peroxide-ferrous sulfate 1-2 parts
3-5 parts of 3-phenylpropionyl chloride
4-8 parts of epichlorohydrin
50-100 parts of triethylamine.
By adopting the dosage of the materials, the acid and alkali resistance and the organic resistance of the modified acetate fiber are further improved. The fabric prepared by using the photosensitive silk yarns has good acid and alkali resistance and organic resistance, and is easy to treat.
Preferably, the polyester resin has an acid ester of 30 to 36mgKOH/g, a softening point (ring and ball method) of 103 to 113 ℃, a glass transition temperature of-60 ℃, and a melt viscosity (ICI, mPa.s/200 ℃) of 5000 to 8000 Pa.s.
Through adopting above-mentioned technical scheme, optimize the performance of polyester resin for polyester resin can fully mix with the photosensitive material, further optimize the mobile property of polyester resin simultaneously, be convenient for polyester resin bear the weight of the photosensitive material, be favorable to photosensitive material evenly distributed in the photosensitive silk thread system, further improve the homogeneity of photosensitive silk thread colour change, thereby improve the homogeneity of the photochromism of surface fabric.
Preferably, the polyester polyol has a functionality of 2 to 3 and an average molecular weight of 2000 to 4000.
By adopting the technical scheme, the performance of the polyester polyol is optimized, the bonding force of the polyester polyol is further improved, the photosensitive material and the polyester resin can be bonded stably, and the photosensitive material is favorably promoted to be uniformly distributed in a photosensitive silk thread system.
Preferably, the compatilizer is one of a maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer, a glycidyl methacrylate grafted acrylonitrile-butadiene-styrene copolymer or a glycidyl methacrylate grafted styrene acrylonitrile copolymer.
By adopting the compatilizer, the compatibility of the photosensitive resin matrix, the PET slice and the acetate fiber is further improved, a uniformly mixed system is obtained, and the smoothness, the softness and the air permeability of the photosensitive silk thread are improved. Preferably, the other auxiliary agent is at least one of an antioxidant, an anti-aging agent and an antistatic agent.
By adopting the technical scheme, the oxidation resistance of the photosensitive wire is improved by adding the antioxidant, and the damage to the structure of the photosensitive wire due to oxidation is reduced; the anti-aging agent is added to improve the weather resistance of the photosensitive silk thread and prolong the service life of the photosensitive silk thread; the antistatic agent is added to reduce the possibility of static electricity of the photosensitive silk thread.
Preferably, the photosensitive material is at least one of indoline spiropyran, 1, 4-dihydroxyanthraquinone, 2- (2, 4-dinitrobenzyl) pyridine and salicylanilide.
The photosensitive material can further improve the photosensitive color change uniformity of the photosensitive wire, the melting point of indoline spiropyran is 165 ℃, the melting point of 1, 4-dihydroxyanthraquinone is 199 ℃, the melting point of 2- (2, 4-dinitrobenzyl) pyridine is 94 ℃, and the melting point of salicylanilide is 135 ℃, and the photosensitive material can be used for preparing a photosensitive resin matrix without damaging the structure of the original photosensitive material, so that the photosensitive color change stability of the photosensitive resin matrix is improved.
In a second aspect, the present application provides a method for preparing a photosensitive wire, which adopts the following technical scheme:
the preparation method of the photosensitive silk yarn comprises the following preparation steps:
s1, mixing, extruding and granulating PTE slices, compatilizer, photosensitive resin matrix, acetate fibers and other auxiliary agents according to parts by weight to obtain photosensitive master batches;
s2, under the protection of nitrogen, placing the photosensitive master batch into a double-screw extruder for extrusion spinning, controlling the total supply of a spinning metering pump to be 450-500g/min, the spinning temperature to be 240-250 ℃, the spinning speed to be 800-1000m/min and the draft multiple to be 2-2.5 times, and obtaining the photosensitive silk yarn.
By adopting the technical scheme, the prepared photosensitive silk thread has smooth surface, good softness and uniform photosensitive color.
Preferably, the temperature of the extrusion step in S1 is: the I region is 210-220deg.C, the II region is 220-230deg.C, the III region is 230-240 deg.C, the IV region is 220-230deg.C, and the V region is 210-220deg.C.
By adopting the technical scheme, PTE slices, compatilizer, photosensitive resin matrix, acetate fiber and other auxiliary agents can be fully and uniformly mixed, so that the photosensitive color of the photosensitive wire is uniform, the surface is smooth and the flexibility is good.
In summary, the present application has the following beneficial effects:
1. according to the photosensitive silk thread prepared by the combined action of the PET slice, the photosensitive resin matrix, the acetate fiber, the compatilizer and other auxiliary agents, wherein the photosensitive material, the polyester polyol and the polyester resin are fused to prepare the photosensitive resin matrix through reasonable proportion, so that the prepared photosensitive silk thread can present different colors along with the intensity change of light, the photosensitive material is uniformly distributed and is reserved in the photosensitive silk thread for a long time, the color of the photosensitive silk thread is dynamically changed, the duration is long, and the color is not easy to fade. The fabric prepared by the photosensitive silk thread has good softness, good air permeability, uniform photochromic and long photochromic time (2), and the acid-alkali resistance and the organic resistance of the modified acetate fiber are further improved by preparing the acetate fiber, glacial acetic acid, power exponent, sulfite solution, acrylic acid, hydrogen peroxide-ferrous sulfate, 3-phenylpropionyl chloride, epichlorohydrin and triethylamine. The fabric prepared by using the photosensitive silk yarns has good acid and alkali resistance and organic resistance, and is easy to treat.
Detailed Description
Preparation examples 1 to 3
Preparation example 1
A modified acetate fiber is prepared by the following preparation method:
a: dissolving 0.3Kg of acetate fiber in 2Kg of glacial acetic acid to obtain acetate fiber solution;
b: dissolving 0.1Kg of lignin in 0.4Kg of sulfite solution to obtain lignin-sulfite solution, adding 0.15Kg of acrylic acid into the lignin-sulfite solution, heating to 50 ℃, dropwise adding 0.01Kg of hydrogen peroxide-ferrous sulfate for reaction, precipitating, and filtering to obtain modified lignin;
c: adding the modified lignin into the acetate fiber solution, stirring, heating to 70 ℃, adding 0.03Kg of 3-phenylpropionyl chloride and 0.04Kg of epoxy chloropropane, reacting for 4 hours, cooling to 20 ℃, dropwise adding 0.5Kg of triethylamine, regulating the pH to 6.5-7.5, filtering, and drying to obtain the modified acetate fiber.
The sulfite solution used in the preparation example is sodium sulfite solution, and the mass fraction is 26%.
The hydrogen peroxide-ferrous sulfate used in the preparation example is obtained by mixing hydrogen peroxide and ferrous sulfate according to a molar ratio of 1:2. Preparation 2 and preparation 3 differ from preparation 1 in that: the materials and experimental parameters of some of the raw materials were different, and the rest of the experimental steps were identical to those of preparation example 1.
The materials and amounts used in preparation examples 1-3 are shown in Table 1:
TABLE 1 materials and amounts used in preparation examples 1-3
Figure BDA0004111955260000051
Figure BDA0004111955260000061
Examples
The PET chips used in this application had an intrinsic viscosity of 0.85dL/g, a hardness of 4H, an abrasion resistance of 148 times/1 Kg, and a light transmittance of 88% at 380-780 nm.
The glass transition temperature of the commercial acetate fiber was 185℃and the melt termination temperature was 310℃and the weight loss of the fiber at the end of the heating was 90.78%, the breaking strength of the acetate fiber was 1.29cN/dtex and the strain was 31.44%.
Example 1
A photosensitive silk thread is prepared by the following preparation method:
s1, mixing and extruding 1Kg of PTE slice, 0.1Kg of compatilizer, 0.5Kg of photosensitive resin matrix and 1Kg of commercial acetate fiber, and granulating to obtain photosensitive master batch;
s2, under the protection of nitrogen, placing the photosensitive master batch into a double-screw extruder for extrusion spinning, controlling the total supply of a spinning metering pump to be 450g/min, the spinning temperature to be 240 ℃, the spinning speed to be 800m/min and the draft multiple to be 2 times, and obtaining the photosensitive silk thread.
Wherein the photosensitive resin matrix is prepared from photosensitive material, polyester polyol and polyester resin according to the weight ratio of 3:10: 20.
The extrusion step temperature in step S1 is: zone I is 210 ℃, zone II is 220 ℃, zone III is 230 ℃, zone IV is 220 ℃, and zone V is 210 ℃.
The photosensitive material is indoline spiropyran.
The polyester resin had an acid ester of 30mgKOH/g, a softening point (ring and ball method) of 103℃and a glass transition temperature of-60℃and a melt viscosity (ICI, mPa.s/200 ℃) of 5000mPa.s.
The polyester polyol has a functionality of 2 and an average molecular weight of 2000.
The compatilizer is maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer, the melt index (200 ℃,5 kg) of the maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer is 4g/10min, and the grafting rate is 8%.
Examples 2-4 differ from example 1 in that some of the raw material types used and the experimental set-up were different and the remaining experimental steps were identical to those of example.
The raw materials and amounts used in examples 1-4 are shown in Table 2:
TABLE 2 materials and amounts used in examples 1-4
Figure BDA0004111955260000071
The difference between example 1 and example 2 is that the acetate fiber in example 2 is from preparation example 1, and the types, amounts and test parameters of the other raw materials are the same as those of example 1.
The polyester resin in example 3 had an acid ester of 34mgKOH/g, a softening point (ring and ball method) of 1.6℃and a glass transition temperature of-60℃and a melt viscosity (ICI, mPas/200 ℃) of 6500 mPas.
The photosensitive material is 1, 4-dihydroxyanthraquinone.
The polyester polyol has a functionality of 2 and an average molecular weight of 2500.
The compatilizer is glycidyl methacrylate grafted acrylonitrile-butadiene-styrene copolymer with a melt index (200 ℃,5 kg) of 3g/10min and a grafting rate of 10%.
The other auxiliary agent is antioxidant
The polyester resin in example 4 had an acid ester of 36mgKOH/g, a softening point (ring and ball method) of 113℃and a glass transition temperature of-60℃and a melt viscosity (ICI, mPa.s/200 ℃) of 800 Pa.s.
The photosensitive material is 2- (2, 4-dinitrobenzyl) pyridine.
The polyester polyol has a functionality of 3 and an average molecular weight of 4000.
The other auxiliary agents are ultraviolet resistance agents.
The compatilizer is glycidyl methacrylate grafted styrene acrylonitrile, the number average molar mass is 7100000g/mol, and the dispersity is 2163.
Example 5
This embodiment differs from embodiment 2 in that: the polyether polyol was used instead of the equivalent amount of polyester polyol in the photosensitive resin matrix, and the types of the remaining raw materials, the amounts and the test parameters were the same as those of example 1.
The polyether polyol has a functionality of 2 and an average molecular weight of 2000.
Example 6
This embodiment differs from embodiment 2 in that: equal amounts of polypropylene were used in the photosensitive resin matrix instead of polyester resin, and the remaining raw material types, amounts and test parameters were the same as in example 1.
The polypropylene had a weight average molecular weight of 700000 and a melting temperature of 174 ℃.
Comparative example
Comparative example 1
The photosensitive wire of this comparative example is different from that of example 1 in that: the PET chips were replaced with equal amounts of polybutylene terephthalate, and the remaining raw material types, amounts and test parameters were the same as in example 1.
Polybutylene terephthalate has a melting point of 225 ℃, a crystallinity of 30%, a glass transition temperature of 42 ℃ and a tensile strength of 50MPa.
Comparative example 2
The photosensitive wire of this comparative example is different from that of example 1 in that: the acetate fibers were replaced with equal amounts of polyamide fibers, and the remaining raw material types, amounts and test parameters were the same as in example 1.
The relative molecular weight of the polyamide fiber was 18000.
Comparative example 3
The photosensitive wire of this comparative example is different from that of example 1 in that: the maleic anhydride-grafted acrylonitrile-butadiene-styrene copolymer was replaced with an equivalent amount of methyl vinyl ether-maleic anhydride copolymer, and the remaining raw material types, amounts and test parameters were the same as in example 1.
The methyl vinyl ether-maleic anhydride copolymer had a boiling point of 202℃and an average molecular weight of 216000.
Performance test
The photosensitive wires prepared in examples 1 to 6 and comparative examples 1 to 3 were knitted to have a grammage of 250g/m 3 Is subjected to photosensitive uniformity observation, photosensitive change test and ventilationSex test and softness test.
Detection method/test method
And (3) observing the photosensitive uniformity: the photosensitive fabrics prepared by the photosensitive threads of examples 1 to 6 and comparative examples 1 to 3 were placed under light to observe whether the photosensitive fabrics had color unevenness and pimples.
And (3) testing the photosensitive change: the photosensitive fabrics prepared by the photosensitive threads in the example 1 are divided into four groups A, B, C, D, B, C, D groups of photosensitive fabrics are respectively placed in a washing machine, glacial acetic acid (the pH value of the washing machine is 4) is added into the group B, 5% NaOH solution (the pH value of the washing machine is 10) is added into the group C, 100ml of acetone is added into the group D, the washing is repeated 100 times, the photosensitive effects of the two groups A and B, the two groups A and C and the two groups A and D are compared, whether a fracture phenomenon occurs or not, and the examples 2-7 and the comparative examples 1-4 also adopt the same method.
Air permeability test: the air permeability of the photosensitive fabrics was tested with reference to GB/T5453-1997 standard, respectively.
Softness test: the softness of the photosensitive fabrics was tested separately according to the test method of EDANAWSP 90.3 (05).
The test data are shown in table 3:
TABLE 3 Performance test data
Figure BDA0004111955260000091
Figure BDA0004111955260000101
The smaller the softness value, the better the softness.
As can be seen from examples 1-7 and comparative examples 1-4 in combination with Table 3, the photosensitive threads prepared by the formula and the preparation method are uniform in photosensitive discoloration and long in time, are not easy to damage when used for preparing the photosensitive fabric, and meanwhile, the photosensitive fabric prepared by the photosensitive threads is good in air permeability and softness, and is more suitable for clothes worn by people.
Compared with comparative example 1, example 1 shows no change in photosensitive color after repeated washing by a washing machine, and has good air permeability and softness; the contrast example 1 shows that the color is uneven due to observation of the photosensitive uniformity, the photosensitive color is changed and has cracks after repeated cleaning by a washing machine, the air permeability is poor, the softness is poor, and the PET slice can play a better synergistic effect with the photosensitive resin matrix, the acetate fiber and the compatilizer, so that the smoothness, the strength, the air permeability and the softness of the photosensitive silk thread are further improved, and the photosensitive fabric prepared by the photosensitive silk thread has uniform photosensitive color, can be maintained for a long time, and has good air permeability and softness.
Compared with comparative example 2, example 1 has no change in photosensitive color after repeated washing by a washing machine, good air permeability and good softness; in comparative example 2, the color unevenness is observed, the photosensitive color is changed and has cracks after repeated washing by a washing machine, the air permeability is poor, and the softness is poor, which shows that the acetate fiber can play a better synergistic effect with the photosensitive resin matrix, the acetate fiber, the PET slice and the compatilizer, and the smoothness, the strength, the air permeability and the softness of the photosensitive silk thread are further improved, so that the photosensitive fabric prepared by the photosensitive silk thread has uniform photosensitive color, can be maintained for a long time, and has good air permeability and softness.
Compared with the comparative example 3, the example 1 has no change in photosensitive color after repeated washing by a washing machine, good air permeability and good softness; in comparative example 2, the photosensitive uniformity was observed to have uneven color, pimple, and the photosensitive color was changed and cracked after repeated washing by a washing machine, and the air permeability was poor, and the softness was poor, which indicates that the use of the compatibilizer can improve the compatibility of the photosensitive resin matrix, the acetate fiber and the PET slice, and further improve the smoothness, strength, air permeability and softness of the photosensitive threads, so that the photosensitive fabric prepared from the photosensitive threads had uniform photosensitive color, can be maintained for a long time, and has good air permeability and softness.
Compared with examples 2-4, the B, C, D groups in example 1 have cracks, the B, C, D groups in examples 2-4 have no cracks, and the air permeability and softness of examples 2-4 are better than those of example 1, which shows that the modified acetate fiber prepared by the method is used for preparing photosensitive threads, and the photosensitive threads are used for preparing photosensitive fabrics, so that the acid and alkali resistance, organic physical properties, softness and air permeability of the photosensitive fabrics can be improved, and the fabrics are convenient to manage.
In example 2, compared with example 5, the photosensitive color is uneven in example 5, which shows that the adhesion of the ester resin and the photosensitive material can be improved by the action of the polyester polyol, so that the photosensitive material can be uniformly distributed in the photosensitive resin matrix, and the color effect of the photosensitive thread can be improved.
In example 2, compared with example 6, the photosensitive color is not uniform in example 6, which shows that the photosensitive material, the polyester polyol and the polyester resin are fused to prepare the photosensitive resin matrix by reasonable proportion, so that the photosensitive material is uniformly distributed and remains in the photosensitive wire for a long time.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims (10)

1. The photosensitive silk thread is characterized by comprising the following raw materials in parts by weight:
5-15 parts of photosensitive resin matrix
10-20 parts of PET slice
1-2 parts of compatilizer
10-15 parts of acetate fiber
0-1 part of other auxiliary agent
Each part of photosensitive resin matrix is prepared from a photosensitive material, polyester polyol and polyester resin according to the weight ratio of 3: (10-15): (20-35) melting and preparing.
2. The photosensitive wire according to claim 1, wherein the acetate fiber is a modified acetate fiber, and is prepared by the following method:
a: dissolving acetate fibers in glacial acetic acid to obtain acetate fiber solution;
b: dissolving lignin in a sulfite solution to obtain a lignin-sulfite solution, adding acrylic acid into the lignin-sulfite solution, heating to 50-60 ℃, dropwise adding hydrogen peroxide-ferrous sulfate for reaction, precipitating, and filtering to obtain modified lignin;
c: adding the modified lignin into the acetate fiber solution, stirring, heating to 70-80 ℃, adding 3-phenylpropionyl chloride and epoxy chloropropane, reacting for 4-5h, cooling to 20-30 ℃, dropwise adding triethylamine to adjust the pH to 6.5-7.5, filtering, and drying to obtain the modified acetate fiber.
3. The photosensitive wire according to claim 2, wherein the modified acetate fiber comprises the following materials in parts by weight:
30-40 parts of acetate fiber
200-300 parts of glacial acetic acid
10-15 parts of lignin
40-60 parts of sulfite solution
Acrylic acid 15-20 parts
Hydrogen peroxide-ferrous sulfate 1-2 parts
3-5 parts of 3-phenylpropionyl chloride
4-8 parts of epichlorohydrin
50-100 parts of triethylamine.
4. A photosensitive wire according to claim 1, wherein: the polyester resin has an acid ester of 30-36mgKOH/g, a softening point (ring and ball method) of 103-113 ℃, a glass transition temperature of-60 ℃ and a melt viscosity (ICI, mPa.s/200 ℃) of 5000-8000Pa.s.
5. A photosensitive wire according to claim 4, wherein: the polyester polyol has a functionality of 2-3 and an average molecular weight of 2000-4000.
6. A photosensitive wire according to claim 5, wherein: the compatilizer is one of a maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer, a glycidyl methacrylate grafted acrylonitrile-butadiene-styrene copolymer or a glycidyl methacrylate grafted styrene acrylonitrile copolymer.
7. A photosensitive wire according to claim 1, wherein: the other auxiliary agent is at least one of an antioxidant, an anti-aging agent and an antistatic agent.
8. A photosensitive wire according to claim 1, wherein: the photosensitive material is at least one of indoline spiropyran, 1, 4-dihydroxyanthraquinone, 2- (2, 4-dinitrobenzyl) pyridine and salicylanilide.
9. A method for producing a photosensitive wire according to any one of claims 1 to 8, comprising the following steps:
s1, mixing, extruding and granulating PTE slices, compatilizer, photosensitive resin matrix, acetate fibers and other auxiliary agents according to parts by weight to obtain photosensitive master batches;
s2, extruding and spinning the photosensitive master batch under the protection of nitrogen, controlling the total supply of a spinning metering pump to be 450-500g/min, spinning at 240-250 ℃, and obtaining the photosensitive silk thread at 800-1000m/min and 2-2.5 times of draft multiple.
10. The method for preparing a photosensitive wire according to claim 9, wherein: the extrusion step temperature in the step S1 is as follows: the I area is 210-220 ℃, the II area is 220-230 ℃, the III area is 230-240 ℃, the IV area is 220-230 ℃, and the V area is 210-220 ℃.
CN202310209081.5A 2023-03-07 2023-03-07 Photosensitive silk thread and preparation method thereof Pending CN116180273A (en)

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Application Number Priority Date Filing Date Title
CN202310209081.5A CN116180273A (en) 2023-03-07 2023-03-07 Photosensitive silk thread and preparation method thereof

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CN116180273A true CN116180273A (en) 2023-05-30

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