阅读说明：本技术 皮芯结构纤维芯层用光致变色母粒及其制备方法 (Photochromic color master batch for skin-core structure fiber core layer and preparation method thereof ) 是由 魏庭龙 刘晓峰 彭志勇 谢伟 刘向向 李珊珊 侯文杰 李林 于 2019-09-20 设计创作，主要内容包括：本发明提供一种皮芯结构纤维芯层用光致变色母粒,按重量份计由以下组分组成：0-90份载体,1-30份光致变色粉体,0-20份染料,0.5-2.5份混合物,0.5-1.5份分散助剂,其中,所述载体与所述皮芯结构纤维的芯层纤维为相同类型的聚合物,所述混合物包括热稳定剂和抗氧剂。本发明还提供上述皮芯结构纤维芯层用光致变色母的制备方法。本发明的光致变色母粒适用于皮芯结构纤维的生产,以使通过该纤维制造的面料具有光致变色特性；另外,由于光致变色母粒的载体与皮芯结构纤维的芯层纤维为相同类型的聚合物,载体能够与芯层纤维有良好的相容性,从热改善芯层纤维的染色性能,并且能够有效防止光致变色材料脱落,提高皮芯结构纤维的耐水洗性和耐磨性。(The invention provides a photochromic color master batch for a fiber core layer with a skin-core structure, which comprises the following components in parts by weight: 0-90 parts of carrier, 1-30 parts of photochromic powder, 0-20 parts of dye, 0.5-2.5 parts of mixture and 0.5-1.5 parts of dispersing auxiliary agent, wherein the carrier and core layer fiber of the skin-core structure fiber are polymers of the same type, and the mixture comprises heat stabilizer and antioxidant. The invention also provides a preparation method of the photochromic masterbatch for the skin-core structure fiber core layer. The photochromic master batch is suitable for producing skin-core structure fibers, so that fabrics made of the fibers have photochromic characteristics; in addition, because the carrier of the photochromic master batch and the core layer fiber of the skin-core structure fiber are the same type of polymer, the carrier can have good compatibility with the core layer fiber, the dyeing property of the core layer fiber is improved thermally, the photochromic material can be effectively prevented from falling off, and the water washing resistance and the wear resistance of the skin-core structure fiber are improved.)

1. The photochromic color master batch for the skin-core structure fiber core layer is characterized by comprising the following components in parts by weight:

0 to 90 parts of a carrier, and the like,

1 to 30 parts of photochromic powder,

0 to 20 parts of dye, namely,

0.5 to 2.5 parts of a mixture,

0.5 to 1.5 portions of dispersing auxiliary agent,

wherein the carrier and the core layer fiber of the skin-core structure fiber are the same type of polymer, and the mixture comprises a heat stabilizer and an antioxidant.

2. The photochromic color masterbatch for the core-sheath fiber layer of claim 1 wherein the melting point of the carrier is less than 230 ℃.

3. The photochromic color master batch for the skin-core structure fiber core layer according to claim 2, wherein the dispersing auxiliary agent is one or more of ethylene bis stearamide, titanate coupling agent, silane coupling agent and silicone auxiliary agent.

4. The photochromic color masterbatch for the core-sheath fiber core layer of claim 3, wherein the thermal stabilizer is a Thermstab ™ series thermal stabilizer.

5. The photochromic color master batch for the skin-core structure fiber core layer according to claim 4, wherein the antioxidant is one or more of aromatic amine antioxidant, hindered phenol antioxidant and auxiliary antioxidant.

6. The photochromic color masterbatch for the core-sheath fiber layer of claim 5, wherein the dye is a solvent dye.

7. The photochromic color master batch for the core-sheath fiber core layer according to claim 6, wherein the solvent dye is one or more of anthraquinone dye, heterocyclic solvent dye and methylene solvent dye.

8. The photochromic color master batch for the skin-core structure fiber core layer according to claim 7, wherein the photochromic powder is one or more of spiropyrans, diarylethenes, fulgides and color-changing microcapsules.

9. The method for preparing the photochromic color master batch for the core-sheath structure fiber core layer in any one of claims 1 to 8 is characterized by comprising the following steps:

1) the raw materials are taken according to the parts by weight:

0 to 90 parts of a carrier, and the like,

1 to 30 parts of photochromic powder,

0 to 20 parts of dye, namely,

0.5 to 2.5 parts of a mixture,

0.5 to 1.5 portions of dispersing auxiliary agent,

wherein the carrier and the core layer fiber of the sheath-core structure fiber are the same type of polymer, and the mixture comprises a heat stabilizer and an antioxidant;

drying the carrier in the raw materials at 95-105 deg.C under-0.08 MPa for 6-12 hr, adding into a mixer together with other components, and stirring; then putting the mixture into a double-screw extruder for extrusion and granulation; the uniformly mixed materials are fully plasticized in a double screw, and then are sheared and uniformly dispersed by a dispersing element in the double screw, and are extruded by a round hole die, cooled by a water tank, pulled by a brace and sent to a granulator to be cut into cylindrical particles with the length of 3mm +/-1 mm and the diameter of 2.5mm +/-1.5 mm; the double-screw extruder is provided with a vacuumizing device, and the length-diameter ratio of the double-screw extruder is not less than 40: 1; the process temperature during extrusion was 165-240 ℃.

10. The method for preparing the photochromic color master batch for the skin-core structure fiber core layer according to claim 9, wherein in the step 2), the heat stabilizer, the antioxidant and the dispersing aid are premixed with the photochromic powder before mixing, and the mixture is properly heated to form a protective film on the photochromic powder.

Technical Field

The invention relates to a photochromic color master batch for a fiber core layer with a skin-core structure and a preparation method thereof.

Background

Disclosure of Invention

The invention aims to provide a photochromic master batch for a skin-core structure fiber core layer and a preparation method thereof, wherein the photochromic master batch is suitable for producing skin-core structure fibers so that fabrics made of the fibers have photochromic characteristics; in addition, because the carrier of the photochromic master batch and the core layer fiber of the skin-core structure fiber are the same type of polymer, the carrier can have good compatibility with the core layer fiber, thereby improving the dyeing property of the core layer fiber, effectively preventing the photochromic material from falling off and improving the water washing resistance and the wear resistance of the skin-core structure fiber.

In order to achieve the purpose, the invention provides a photochromic color master batch for a skin-core structure fiber core layer, which comprises the following components in parts by weight:

0 to 90 parts of a carrier, and the like,

1 to 30 parts of photochromic powder,

0 to 20 parts of dye, namely,

0.5 to 2.5 parts of a mixture,

0.5 to 1.5 portions of dispersing auxiliary agent,

wherein the carrier and the core layer fiber of the skin-core structure fiber are the same type of polymer, and the mixture comprises a heat stabilizer and an antioxidant.

Preferably, the melting point of the carrier is less than 230 ℃.

Preferably, the dispersing auxiliary agent is one or more of ethylene bis stearamide, a titanate coupling agent, a silane coupling agent and a silicone auxiliary agent.

Preferably, the thermal stabilizer is a Thermstab ™ series thermal stabilizer.

Preferably, the antioxidant is one or more of aromatic amine antioxidant, hindered phenol antioxidant and auxiliary antioxidant.

Preferably, the dye is a solvent dye.

Preferably, the solvent dye is one or more of anthraquinone dye, heterocyclic solvent dye and methylene solvent dye.

Preferably, the photochromic powder is one or more of spiropyrans, diarylethenes, fulgides and photochromic microcapsules.

The invention also provides a preparation method of the photochromic color master batch for the skin-core structure fiber core layer, which comprises the following steps:

1) the raw materials are taken according to the parts by weight:

0 to 90 parts of a carrier, and the like,

1 to 30 parts of photochromic powder,

0 to 20 parts of dye, namely,

0.5 to 2.5 parts of a mixture,

0.5 to 1.5 portions of dispersing auxiliary agent,

wherein the carrier and the core layer fiber of the sheath-core structure fiber are the same type of polymer, and the mixture comprises a heat stabilizer and an antioxidant;

2) drying the carrier in the raw materials at 95-105 deg.C under-0.08 MPa for 6-12 hr, adding into a mixer together with other components, and stirring; then putting the mixture into a double-screw extruder for extrusion and granulation; the uniformly mixed materials are fully plasticized in a double screw, and then are sheared and uniformly dispersed by a dispersing element in the double screw, and are extruded by a round hole die, cooled by a water tank, pulled by a brace and sent to a granulator to be cut into cylindrical particles with the length of 3mm +/-1 mm and the diameter of 2.5mm +/-1.5 mm; the double-screw extruder is provided with a vacuumizing device, and the length-diameter ratio of the double-screw extruder is not less than 40: 1; the process temperature during extrusion was 165-240 ℃.

Preferably, in the step 2), the heat stabilizer, the antioxidant and the dispersing aid are premixed with the photochromic powder before mixing, and the mixture is heated properly to form a protective film on the photochromic powder.

The invention has the advantages and beneficial effects that: the photochromic master batch is suitable for production of skin-core structural fibers, so that fabrics made of the fibers have photochromic characteristics; in addition, because the carrier of the photochromic master batch and the core layer fiber of the skin-core structure fiber are the same type of polymer, the carrier can have good compatibility with the core layer fiber, thereby improving the dyeing property of the core layer fiber, effectively preventing the photochromic material from falling off and improving the water washing resistance and the wear resistance of the skin-core structure fiber.

Detailed Description

The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

The technical scheme of the specific implementation of the invention is as follows:

the invention provides a photochromic color master batch for a fiber core layer with a skin-core structure, which comprises the following components in parts by weight:

70 parts of a carrier, namely,

25 parts of a photochromic powder, namely a photochromic powder,

3 parts of a dye, namely,

1.5 parts of the mixture, and the like,

0.5 part of a dispersing aid, and,

the carrier and core layer fibers of the sheath-core structure fibers are polymers of the same type, the carrier is PBT, the intrinsic viscosity of the PBT is 1.0dL/g, the melting point is 220-225 ℃, the mixture consists of 1 part of heat stabilizer and 0.5 part of antioxidant, the heat stabilizer is a Thermstab series heat stabilizer, and the antioxidant is one or more of aromatic amine antioxidant, hindered phenol antioxidant and auxiliary antioxidant; the photochromic powder is one or more of spiropyran, diarylethene, fulgide and photochromic microcapsule, and the particle size of the photochromic powder is 0.5-5.0 um; the dye is an anthraquinone dye; the dispersing aid is ethylene bis stearamide.

The invention also provides a preparation method of the photochromic color master batch for the skin-core structure fiber core layer, which comprises the following steps:

1) the raw materials are taken according to the parts by weight:

70 parts of PBT (polybutylene terephthalate),

25 parts of a photochromic powder, namely a photochromic powder,

3 parts of an anthraquinone dye, a dye,

1 part of heat stabilizer and 0.5 part of antioxidant,

0.5 part of ethylene bis stearamide,

2) drying the PBT in the raw materials at the drying temperature of 95-105 ℃, the vacuum degree of less than or equal to-0.08 MPa, and the drying time of 6-12 hours, premixing the heat stabilizer, the antioxidant and the ethylene bis-stearamide with the photochromic powder, heating the mixture appropriately to form a layer of protective film on the photochromic powder, putting the protective film, the anthraquinone dye and the dried PBT into a mixer, and fully stirring and uniformly mixing the protective film, the anthraquinone dye and the dried PBT; then putting the mixture into a double-screw extruder for extrusion and granulation; the uniformly mixed materials are fully plasticized in a double screw, and then are sheared and uniformly dispersed by a dispersing element in the double screw, and are extruded by a round hole die, cooled by a water tank, pulled by a brace and sent to a granulator to be cut into cylindrical particles with the length of 3mm +/-1 mm and the diameter of 2.5mm +/-1.5 mm; the double-screw extruder is provided with a vacuumizing device, and the length-diameter ratio of the double-screw extruder is not less than 40: 1; the process temperature during extrusion was 165-240 ℃.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.