CN112679874B - Antibacterial PVC fiber composition for wig and preparation method thereof - Google Patents

Abstract

The invention belongs to the field of processing and application of polyvinyl chloride resin, and particularly relates to an antibacterial PVC fiber composition for wigs and a preparation method thereof. The antibacterial PVC fiber composition for wigs comprises the following raw materials in parts by weight: 100 parts of PVC resin, 0.8-5 parts of heat stabilizer, 0.5-2 parts of composite lubricant, 40-80 parts of plasticizer, 5-10 parts of flatting agent, 2-6 parts of softener, 2-5 parts of hygroscopic agent, 5-20 parts of antibacterial agent, 0.2-0.5 part of antioxidant, 0.1-0.3 part of light stabilizer, 2-10 parts of filler and 1-2 parts of color masterbatch; wherein the antibacterial agent is L-cystine. The antibacterial PVC fiber composition for the wig is safe to use, can prevent pathogenic bacteria from developing and prevent skin allergy, has a good antibacterial effect, has density and glossiness close to those of human hair, and is mainly used for hair products; the preparation method is scientific, reasonable, simple and feasible.

Description

Antibacterial PVC fiber composition for wig and preparation method thereof

Technical Field

The invention belongs to the field of processing and application of polyvinyl chloride resin, and particularly relates to an antibacterial PVC fiber composition for wigs and a preparation method thereof.

Background

Synthetic fibers commonly used for hair products include polyvinyl chloride (PVC) -based fibers, Polyacrylonitrile (PAN) -based fibers, polyester (mainly PET) -based fibers, polypropylene (PP) -based fibers, protein-based fibers, and the like. The PVC-based fiber prepared by the PVC resin spinning has the advantages that the strength, the elongation at break, the density and other various performances of the fiber are close to those of human hair, the fiber has good flame retardant property, the sizing effect is good, the deformation is not easy to occur, and the appearance is natural, so the PVC fiber becomes a preferred material for manufacturing wigs. However, PVC-based fibers also have some disadvantages, such as: the method has the advantages of narrow forming and processing temperature range, poor processing fluidity, low heat deformation temperature, the migration and precipitation problems of the plasticizer, the general problems of easy bacteria breeding of wigs and the like.

The prior art of the patent literature has improved the defect problem of PVC fiber, for example, patent CN102560736A discloses a polyvinyl chloride fiber for hair use and a method, which uses an organic tin stabilizer to compound Ca-Zn stabilizer, can effectively inhibit the deterioration of the coloring performance caused by antioxidant and UV resistant agent, and can be exposed to light and heat for a long time without fading.

Patent CN101031676A discloses a polyvinyl chloride fiber with less initial coloration, which is prepared by blending PVC and CPVC, and compounding a stabilizing system with a hydrotalcite stabilizer, a calcium zinc stabilizer and a beta-diketone, and is used to obtain artificial hair for hair decoration with good spinning performance, excellent transparency and good initial coloration.

Patent CN107034547A discloses a method for producing polyvinyl chloride fiber for hair, which improves spinnability and color of PVC fiber by reasonably adjusting the proportion of PVC resins with different polymerization degrees.

The patent CN100336950A discloses a polyvinyl chloride fiber, a method for producing the polyvinyl chloride fiber and an application thereof, wherein the heat resistance of the PVC fiber is improved, the heat shrinkage is reduced and the spinning performance of the PVC fiber during melting-spinning is maintained by blending compatible chlorinated vinyl chloride resin with the chlorine content of 57-64% and heat-resistant chlorinated vinyl chloride resin with the chlorine content of 65-71% with PVC.

Patent CN104451943A discloses a flame retardant polyvinyl chloride/chlorinated polyvinyl chloride fiber for hair and a melting preparation method thereof, wherein a large amount of plasticizer is extracted by treating with organic solvents such as diethyl ether, so that the residual amount of the plasticizer in the finished product PVC/CPVC fiber is very low, the shrinkage of the obtained fiber is low, the oxygen index can reach 33, the flame retardant property is improved, and small gullies appear on the surface, so that the fiber property is closer to human hair. Patent CN104611781A discloses a method for preparing polyvinyl chloride fiber for hair by melting method, which is further improved by adding organic montmorillonite into the formula, the organic montmorillonite not only has good compatibility with polymer, but also can enlarge the space between layers, and when processing with PVC, the organic montmorillonite and PVC are subjected to melting intercalation to insert the PVC molecular chain into the layer structure, and generate physical cross-linking points to perform physical cross-linking.

Patent CN101877976A discloses an antibacterial artificial hair and an antibacterial coating agent for artificial hair, wherein the artificial hair has luster and texture similar to human hair and antibacterial property by the presence of organic resin particles containing aluminum salt. Although the invention has certain antibacterial property, various chemical substances are adopted, and certain sensitization exists.

PVC-based fibers for wigs produced in the prior art have obvious differences from human hair in aspects of glossiness, flexibility, bulkiness, smoothness and the like, and are easy to breed bacteria, so that skin itch and eczema can occur when the wigs are worn.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the antibacterial PVC fiber composition for the wig overcomes the defects of the prior art, is safe to use, can prevent pathogenic bacteria from developing and prevent skin allergy, has a good antibacterial effect, has density and glossiness close to those of human hair, and is mainly used for hair products; the invention also provides a preparation method of the composition, which is scientific, reasonable, simple and feasible.

The antibacterial PVC fiber composition for wigs comprises the following raw materials in parts by weight:

100 parts of PVC resin, 0.8-5 parts of heat stabilizer, 0.5-2 parts of composite lubricant, 40-80 parts of plasticizer, 5-10 parts of flatting agent, 2-6 parts of softener, 2-5 parts of hygroscopic agent, 5-20 parts of antibacterial agent, 0.2-0.5 part of antioxidant, 0.1-0.3 part of light stabilizer, 2-10 parts of filler and 1-2 parts of color masterbatch;

wherein the antibacterial agent is L-cystine which is L-cystine and is one of main components in human hair, a sulfur-containing amino acid which is white hexagonal plate crystal or crystalline powder and has the chemical name of (R, R) -3, 3-dithiobis (2-aminopropionic acid), dithioaminopropionic acid or bis-beta-thioalanine, has the effects of promoting the oxidation and reduction functions of body cells, preventing the development of pathogenic bacteria and the like, and is used for preventing alopecia and skin allergy.

The PVC resin is suspension-process PVC resin powder with the average polymerization degree of 1000-1700, and the ethylene process or the calcium carbide process can be used, and the PVC resin powder has loose particles, the arithmetic average particle size of 80-120 mu m, less impurities and high whiteness.

The heat stabilizer is one or more of an organic tin stabilizer, a calcium-zinc composite stabilizer, a rare earth stabilizer or an organic antimony stabilizer. Preferred are organotin stabilizers, which are excellent in thermal stability, light and weather resistance, and color stability.

The composite lubricant is a mixture of an internal lubricant and an external lubricant. Wherein the internal lubricant is stearic acid, calcium stearate, fatty acid lower alcohol ester, fatty acid, etc.; the external lubricant is oligomeric composite ester of polyhydric alcohol, paraffin, polyethylene wax or oxidized polyethylene wax, etc.

The plasticizer is one or more of phthalic acid esters, benzene polyacid esters, fatty acid dibasic acid esters, citric acid esters, phosphoric acid esters, polyesters, epoxy compounds, synthetic vegetable esters (environment-friendly plasticizer taking vegetable oil as raw material) or novel environment-friendly plasticizers. Preferred are environmental plasticizers such as ESBO, DIDP, TXIB, DINCH, D-810, etc.

The flatting agent is flatting polyvinyl chloride resin, the average polymerization degree is 1000-1300, and the gel content is 15-25%, preferably 20%.

The softener is styrene-butadiene-styrene triblock copolymer (SBS), the molecular weight is 7-12 ten thousand, the S/B ratio is 30/70, the rubber elasticity is shown at normal temperature, the hand feeling is closer to human skin, and the composition is more smooth and exquisite in touch feeling.

The moisture absorbent is synthetic resin super absorbent resin, which is obtained by copolymerizing polyvinyl alcohol and anhydride, acrylic acid or vinyl acetate, and has strong hydrophilicity, swelling property, water retention property and the like.

The antioxidant is one or more of hindered phenol, hindered amine, phosphite ester, thiodipropionate or thiol antioxidant; the light stabilizer is one or more of salicylate, benzoate, benzophenone, benzotriazole, triazine or hindered amine light stabilizer; the filler is inorganic filler, such as one or more of titanium dioxide, calcium carbonate or talcum powder.

The colorant in the color masterbatch is carbon black or other pigments.

The preparation method of the antibacterial PVC fiber composition for wigs comprises the following steps:

weighing the raw materials according to the formula, putting the raw materials into a high-speed mixer, mixing and heating to 120 ℃, putting the raw materials into a low-speed mixer after the plasticizer is completely absorbed and uniformly mixed, and cooling to 40-50 ℃ to obtain the antibacterial PVC fiber composition for wig.

The invention has the following beneficial effects:

1. the antibacterial PVC fiber composition for the wig is safe to use, can prevent pathogenic bacteria from developing and prevent skin allergy, has a good antibacterial effect, has density and glossiness close to those of human hair, and is mainly used for hair products.

2. The preparation method is scientific, reasonable, simple and feasible.

Detailed Description

The present invention is further illustrated by the following examples, which are not intended to limit the practice of the invention.

The raw materials used in the examples were all commercially available materials except for those specifically mentioned.

Examples 1 to 5

The formulation of the antibacterial PVC fiber composition for wigs is shown in Table 1.

The composite lubricant used in table 1 was PE wax/calcium stearate in a mass ratio of 2: 1.

The moisture absorbent used in table 1 was KR, gory, japan.

The preparation method comprises the following steps:

weighing the raw materials according to a formula, putting the raw materials into a high-speed mixer, mixing and heating the raw materials to 110 ℃, uniformly mixing the raw materials for 15 minutes after the plasticizer is completely absorbed, putting the raw materials into a low-speed mixer and cooling the mixture to 40 ℃ to obtain the antibacterial PVC fiber composition for wig, granulating the antibacterial PVC fiber composition, extruding sheets and drawing wires, and testing the performance of the composition, wherein the test results are shown in Table 2.

TABLE 1 formulation of antibacterial PVC fiber composition for wigs described in examples 1-5

TABLE 2 test results

The test criteria for performance in table 2 are as follows:

density standard GB/T1033-;

gloss GB/T8807-1988;

an antibacterial performance detection method GB/T31402-2015.

Claims (9)

1. An antibacterial PVC fiber composition for wigs is characterized in that: the composition comprises the following raw materials in parts by weight:

100 parts of PVC resin, 0.8-5 parts of heat stabilizer, 0.5-2 parts of composite lubricant, 40-80 parts of plasticizer, 5-10 parts of flatting agent, 2-6 parts of softener, 2-5 parts of hygroscopic agent, 5-20 parts of antibacterial agent, 0.2-0.5 part of antioxidant, 0.1-0.3 part of light stabilizer, 2-10 parts of filler and 1-2 parts of color masterbatch;

wherein the antibacterial agent is L-cystine;

the plasticizer is a mixture of DIDP and D-810.

2. The antibacterial PVC fiber composition for wigs according to claim 1, wherein: the PVC resin is suspension-process polyvinyl chloride resin powder with the average polymerization degree of 1000-1700, is produced by adopting an ethylene method or a calcium carbide method, and has the arithmetic average particle size of 80-120 mu m.

3. The antibacterial PVC fiber composition for wigs according to claim 1, wherein: the heat stabilizer is one or more of an organic tin stabilizer, a calcium-zinc composite stabilizer, a rare earth stabilizer or an organic antimony stabilizer.

4. The antibacterial PVC fiber composition for wigs according to claim 1, wherein: the composite lubricant is a mixture of an internal lubricant and an external lubricant.

5. The antibacterial PVC fiber composition for wigs according to claim 1, wherein: the flatting agent is flatting polyvinyl chloride resin, the average polymerization degree is 1000-1300, and the gel content is 15-25%.

6. The antibacterial PVC fiber composition for wigs according to claim 1, wherein: the softener is a styrene-butadiene-styrene triblock copolymer, the molecular weight is 7-12 ten thousand, and the S/B ratio is 30/70.

7. The antibacterial PVC fiber composition for wigs according to claim 1, wherein: the hygroscopic agent is synthetic resin super absorbent resin, which is obtained by copolymerizing polyvinyl alcohol and anhydride, acrylic acid or vinyl acetate.

8. The antibacterial PVC fiber composition for wigs according to claim 1, wherein: the antioxidant is one or more of hindered phenol, hindered amine, phosphite ester, thiodipropionate or thiol antioxidant; the light stabilizer is one or more of salicylate, benzoate, benzophenone, benzotriazole, triazine or hindered amine light stabilizer; the filler is an inorganic filler.

9. A method for preparing the antibacterial PVC fiber composition for wigs according to any one of claims 1 to 8, wherein: the method comprises the following steps:

weighing the raw materials according to the formula, putting the raw materials into a high-speed mixer, mixing and heating to 120 ℃, putting the raw materials into a low-speed mixer after the plasticizer is completely absorbed and uniformly mixed, and cooling to 40-50 ℃ to obtain the antibacterial PVC fiber composition for wig.