阅读说明：本技术 一种仿真假发用pvc纤维组合物及其制备方法 (PVC fiber composition for artificial wig and preparation method thereof ) 是由 袁辉志 张学明 王晶 张新华 孔秀丽 贾小波 肖恩琳 李长春 孙丽朋 张强 许永 于 2019-10-18 设计创作，主要内容包括：本发明属于聚氯乙烯树脂加工应用领域,具体涉及一种仿真假发用PVC纤维组合物及其制备方法。所述的仿真假发用PVC纤维组合物,如下重量份数的原料组成：PVC树脂100份、热稳定剂0.8-5份、复合润滑剂0.5-2份、增塑剂40-80份、消光剂5-10份、柔顺剂2-6份、吸湿剂2-5份、抗氧剂0.2-0.5份、光稳定剂0.1-0.3份、填料2-10份和色母料0.5-2份。本发明所述的仿真假发用PVC纤维组合物,光泽柔和、手感柔软顺滑、细腻,具有与人发很高的相似度；其制备方法,科学合理、简单易行。(The invention belongs to the field of polyvinyl chloride resin processing and application, and particularly relates to a PVC fiber composition for a simulated wig and a preparation method thereof. The PVC fiber composition for the simulated wig 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, 0.2-0.5 part of antioxidant, 0.1-0.3 part of light stabilizer, 2-10 parts of filler and 0.5-2 parts of color masterbatch. The PVC fiber composition for the simulated wig is soft in luster, soft, smooth and fine in hand feeling and has high similarity with human hair; the preparation method is scientific, reasonable, simple and feasible.)

1. A PVC fiber composition for artificial 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, 0.2-0.5 part of antioxidant, 0.1-0.3 part of light stabilizer, 2-10 parts of filler and 0.5-2 parts of color masterbatch.

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

3. The PVC fiber composition for artificial hairpiece according to claim 1, characterized in that: 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 PVC fiber composition for artificial hairpiece according to claim 1, characterized in that: the composite lubricant is a mixture of an internal lubricant and an external lubricant.

5. The PVC fiber composition for artificial hairpiece according to claim 1, characterized in that: the plasticizer is one or more of phthalic acid ester, benzene polyacid ester, fatty acid dibasic acid ester, citric acid ester, phosphate, polyester, epoxy compound or synthetic plant ester plasticizer.

6. The PVC fiber composition for artificial hairpiece according to claim 1, characterized in that: the flatting agent is flatting polyvinyl chloride resin, the average polymerization degree is 1000-1300, and the gel content is 15-25%.

7. The PVC fiber composition for artificial hairpiece according to claim 1, characterized in that: 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.

8. The PVC fiber composition for artificial hairpiece according to claim 1, characterized in that: the hygroscopic agent is synthetic resin super absorbent resin, which is obtained by copolymerizing polyvinyl alcohol and anhydride, acrylic acid or vinyl acetate.

9. The PVC fiber composition for artificial hairpiece according to claim 1, characterized in that: 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.

10. A method for preparing the PVC fiber composition for artificial wigs according to any one of claims 1 to 9, comprising: 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 PVC fiber composition for the artificial hair.

Technical Field

The invention belongs to the field of polyvinyl chloride resin processing and application, and particularly relates to a PVC fiber composition for a simulated wig 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 fiber is not easy to deform, and the appearance is natural, so the PVC-based fiber becomes a preferred material for manufacturing the artificial wig. However, the PVC-based fiber also has some disadvantages, such as narrow molding and processing temperature range, poor processing fluidity, low heat deformation temperature, plasticizer migration and precipitation and the like.

The prior patent technology of the prior literature improves the defect problem of PVC fibers, for example, patent CN102560736 discloses a polyvinyl chloride fiber for hair and a method, wherein an organotin stabilizer is compounded with a Ca-Zn stabilizer, so that the coloring performance deterioration caused by an antioxidant and a UV resistant agent can be effectively inhibited, and the polyvinyl chloride fiber can be exposed to light and heat for a long time and is not easy to fade.

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 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.

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.

PVC-based fibers for wigs produced by the prior art have obvious differences from human hair in the aspects of glossiness, flexibility, bulkiness, smoothness and the like, and appearance and hand feeling.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: overcomes the defects of the prior art, provides the PVC fiber composition for the artificial wig, has soft luster, soft, smooth and fine hand feeling and high similarity with human hair; the invention also provides a preparation method of the composition, which is scientific, reasonable, simple and feasible.

The PVC fiber composition for the simulated wig 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, 0.2-0.5 part of antioxidant, 0.1-0.3 part of light stabilizer, 2-10 parts of filler and 0.5-2 parts of color masterbatch.

Wherein:

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

The moisture absorbent is super absorbent resin, is a macromolecule containing hydrophilic groups and a cross-linked structure, has starch series, cellulose series and synthetic polymer series, preferably polyvinyl alcohol substances in the synthetic polymer, is obtained by copolymerizing polyvinyl alcohol and acid anhydride, acrylic acid or vinyl acetate and the like, has strong effects of hydrophilicity, swelling property, water retention and the like, and also has an antistatic effect. The dosage is 2-5 parts, the dosage is less, the effect is not obvious, and when the dosage is more, the moisture regain of the product is high, and the surface is rough.

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 PVC fiber composition for the simulated wig 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 PVC fiber composition for the artificial hair.

The invention has the following beneficial effects:

1. the delustering agent, the softener and the moisture absorbent are added into the formula, so that the glossiness of the PVC-based fiber is reduced, the appearance light is softer, the touch sense is softer, smoother and finer, the moisture absorbent increases the water absorption and antistatic performance of the PVC-based fiber, and the similarity with human hair is high.

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 and comparative example 1

The ingredients of the PVC fiber composition for the simulated wig are 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 PVC fiber composition for the simulation and the wig, granulating the 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 formulations of PVC fiber compositions for artificial hairpiece as described in examples 1-5 and comparative example 1

TABLE 2 test results

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

density standard GB/T1033-;

gloss GB/T8807-1988;

the moisture regain detection method GB/T6503-.