CN101942706A - Temperature-adaptable bamboo pulp fibers and preparation method thereof - Google Patents
Temperature-adaptable bamboo pulp fibers and preparation method thereof Download PDFInfo
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Abstract
The invention provides temperature-adaptable bamboo pulp fibers and a preparation method of the temperature-adaptable bamboo pulp fibers. The method comprises the following steps: providing phase-change microcapsule colloid solution with mass concentration of 1-20%; impregnating, squeezing and grinding bamboo cellulose pulp to obtain alkali cellulose; and ageing, yellowing, dissolving, mixing, defoaming, filtering, spinning and post-processing the alkali cellulose to obtain the temperature-adaptable bamboo pulp fibers. During the yellowing process, dissolving process, mixing process or spinning process, the phase-change microcapsule colloid solution is added to the material. The yellowing process comprises the following steps: adding alkali liquor to the aged alkali cellulose for alkalization, wherein the alkalization temperature is 15-25 DEG C; and adjusting the temperature of the alkali cellulose to the yellowing reaction temperature 10-15min before completing alkalization and adding carbon disulfide to the alkali cellulose for yellowing after completing alkalization.
Description
Technical field
The present invention relates to the fibre technology field, relate in particular to a kind of temperature adjustment bamboo viscose and preparation method thereof.
Background technology
Temperature-regulating fiber is a kind of fiber with heat absorption, storage and release function, it has the function of absorption or release heat when variation of ambient temperature, thereby bidirectional modulation fibrous inside temperature within a certain period of time, improve the comfortableness of textiles, eliminate the influence that variation of ambient temperature produces human body.
Prior art discloses multiple temperature-regulating fiber and preparation method thereof, as the U.S. outlast company temperature adjustment capsule is applied to fabric face and obtains adjustable fabric, can be used for producing extraordinary temperature-regulation garment and bedding; Day disclosure a kind of white coating slurry with temperature adjustment function, be applied to fabric face and use.But the thermal control material layer feel that is applied to fabric face is stiff, coarse, causes comfort of fabric relatively poor.Application number is that 00105837.1 Chinese patent literature discloses a kind of technology of utilizing the accumulation of heat microcapsules to make autoamtic temp-regulating fibre, mainly be to be that capsule-core, macromolecular material are in the accumulation of heat microcapsules adding fiber of cyst wall with the phase change material, when environment temperature is higher than the melt temperature of phase change material, heat in the phase change material absorbing environmental, become liquid from solid gradually, simultaneously store heat; When environment temperature was lower than the crystallization temperature of phase change material, phase change material was converted into solid from liquid gradually, discharged the heat of storage, thereby reached the purpose of automatic adjusting temperature.Though this temperature-regulating fiber can be realized the purpose of automatic temperature-control, do not have other functions, as function such as antibiotic, antibacterial.
Bamboo fibre not only has advantages such as air permeability and good, water imbibition, ABRASION RESISTANCE and dyeability, also has natural antibiotic, bacteria resistance function, is a kind of textile raw material of function admirable.The inventor considers, adds the temperature-adjusting viscose that phase-change microcapsule obtains in the bamboo viscose, not only has the effect of regulating temperature, also has the function of antibacterial bacteriostatic, can satisfy the demand of people to the fiber of diverse in function.
Summary of the invention
In view of this, technical problem to be solved by this invention is to provide a kind of temperature adjustment bamboo viscose and preparation method thereof, and temperature adjustment bamboo viscose provided by the invention not only has good temperature adjustment function, also has good sterilization, bacteria resistance function.
The invention provides a kind of temperature adjustment bamboo viscose, comprising:
The phase-change microcapsule of 3wt%～15wt%;
The water of 7wt%～15wt%;
The finish of 0.15wt%～0.30wt%;
Surplus is a bamboo cellulose.
Preferably, the capsule-core of described phase-change microcapsule is a linear paraffin, and cyst wall is urea aldehyde, polyureas, epoxy resin, polyurethane, polyester, polyamide, polystyrene or polyacrylic resin.
The present invention also provides a kind of preparation method of temperature adjustment bamboo viscose, comprising:
It is 1%～20% phase-change microcapsule colloidal solution that mass concentration is provided;
The bamboo cellulose pulp after dipping, squeezing and pulverization process, is obtained alkali cellulose;
After the described alkali cellulose experienced operation of process successively, yellow operation, dissolution process, mixed processes, deaeration operation, filtration operation, spinning process and postprocessing working procedures, obtain temperature adjustment bamboo viscose, when carrying out yellow operation, dissolution process, mixed processes or spinning process, add described phase-change microcapsule colloidal solution in material, described yellow operation may further comprise the steps:
To alkalizing through adding alkali lye in the alkali cellulose of experienced operation, alkalization temperature is 15 ℃～25 ℃;
To the yellow reaction temperature, alkalization end back added carbon disulfide and carries out yellow 10min～15min in described alkali cellulose with described alkali cellulose temperature adjustment before alkalization finished.
Preferably, when carrying out the spinning processing, in described material, add described phase-change microcapsule colloidal solution.
Preferably, the method for the described phase-change microcapsule colloidal solution of adding is that injection adds before spinning in described material.
Preferably, the time of described alkalization is 30min～60min.
Preferably, described yellow reaction temperature is 18 ℃～35 ℃.
Preferably, the described yellow time is 70min～120min.
Preferably, when carrying out yellow, described carbon disulfide consumption be in the described alkali cellulose alpha cellulose weight 30%～42%.
Preferably, the pH value of described phase-change microcapsule colloidal solution is 5～10.
Compared with prior art, the invention provides a kind of temperature adjustment bamboo viscose of forming by phase-change microcapsule, water, finish and bamboo cellulose.Phase-change microcapsule in the temperature adjustment bamboo viscose provided by the invention can absorb, storage and release heat, thereby plays the purpose of regulating temperature.Simultaneously, temperature adjustment bamboo viscose provided by the invention is a bamboo fibre, has air permeability and good, water imbibition, ABRASION RESISTANCE and dyeability, also has the function of good antibacterial bacteriostatic.In addition, temperature adjustment bamboo viscose provided by the invention also has the good mechanical performance.Experiment shows, temperature adjustment bamboo viscose provided by the invention solidify heat release enthalpy 〉=0.5J/g, fusion heat absorption enthalpy 〉=0.5J/g, antibacterial value＞2.0, sterilizing value＞0, dried fracture strength can reach 1.93CN/dtex, and wet breaking strength can reach 1.12CN/dtex.
Description of drawings
The electron microscope photo scanning of the temperature adjustment bamboo viscose that Fig. 1 provides for the embodiment of the invention 1.
The specific embodiment
The invention provides a kind of temperature adjustment bamboo viscose, comprising:
The phase-change microcapsule of 3wt%～15wt%;
The water of 7wt%～15wt%;
The finish of 0.15wt%～0.30wt%;
Surplus is a bamboo cellulose.
The present invention adds phase-change microcapsule and obtains having the bamboo viscose of regulating temperature and sterilization, bacteria resistance function in the bamboo viscose.
Phase-change microcapsule is to use microcapsules technology, and the particle diameter that the phase transformation core materials is wrapped up with physics or chemical method with the organic or inorganic cyst material is that 0.1 μ m～100 μ m, wall thickness are the stable composite phase-change material of the nucleocapsid structure of 0.01 μ m～10 μ m.Phase-change microcapsule is applied to the problems such as lining feel difference that can avoid common phase-change material to cause in the fiber.
Comprise phase-change microcapsule in the temperature adjustment bamboo viscose provided by the invention, the content of described phase-change microcapsule is 3wt%～15wt%, is preferably 4wt%～13wt%, more preferably 5wt%～12wt%.According to the present invention, the average grain diameter of described phase-change microcapsule is preferred≤10 μ m, more preferably 2 μ m～8 μ m most preferably are 3 μ m～7 μ m; The heat resistance of described phase-change microcapsule is higher than 120 ℃, more preferably 130 ℃～200 ℃, most preferably is 150 ℃～180 ℃.
According to the present invention, the capsule-core of described phase-change microcapsule is preferably linear paraffin, more preferably contains the linear paraffin of 11～24 carbon atoms; The phase transition temperature of described capsule-core is preferably-24 ℃～52 ℃, more preferably-15 ℃～40 ℃, most preferably be-5 ℃～30 ℃; Described capsule-core solidify the heat release enthalpy preferred 〉=80J/g, more preferably 〉=1000J/g; Fusion heat absorption enthalpy is preferred 〉=80J/g, more preferably 〉=100J/g.
According to the present invention, the cyst wall of described phase-change microcapsule is preferably urea aldehyde, polyureas, epoxy resin, polyurethane, polyester, polyamide, polystyrene or polyacrylic resin, more preferably urea aldehyde, polyureas, epoxy resin, polyurethane, polyester or polyamide.
The present invention does not have particular restriction to the preparation method of described phase-change microcapsule, is preferably preparation in accordance with the following methods:
Core materials is mixed with emulsifying agent, dispersant and stabilizing agent, obtain microemulsion;
In described microemulsion, add cyst material, adopt interfacial polymerization to obtain phase-change microcapsule.
Also comprise water in the temperature adjustment bamboo viscose provided by the invention, the content of water is 7wt%～15wt%, is preferably 8wt%～13wt%, more preferably 9wt%～11wt%.The present invention does not have particular restriction to described water.
In order to make fiber have gloss and brightness, contain finish well known to those skilled in the art in the temperature adjustment bamboo viscose provided by the invention, the content of described finish is 0.15wt%～0.30wt%, is preferably 0.18wt%～0.25wt%.
According to the present invention, described bamboo cellulose is the main component of temperature adjustment bamboo viscose provided by the invention, and the present invention does not have particular restriction to described bamboo cellulose.
Temperature adjustment bamboo viscose provided by the invention has the function of good adjusting temperature, and it solidifies heat release enthalpy 〉=0.5J/g, and is preferred 〉=1.0J/g, more preferably 〉=and 3.5J/g; Its fusion heat absorption enthalpy 〉=0.5J/g, preferred 〉=2J/g, more preferably 〉=3J/g.
Temperature adjustment bamboo viscose provided by the invention has good sterilization, bacteria resistance function, its antibacterial value＞2.0, and preferred＞2.5, more preferably＞3.0; Sterilizing value＞0, preferred＞1, more preferably＞2.
The present invention also provides a kind of preparation method of temperature adjustment bamboo viscose, comprising:
It is 1%～20% phase-change microcapsule colloidal solution that mass concentration is provided;
The bamboo cellulose pulp after dipping, squeezing and pulverization process, is obtained alkali cellulose;
After the described alkali cellulose experienced operation of process successively, yellow operation, dissolution process, mixed processes, deaeration operation, filtration operation, spinning process and postprocessing working procedures, obtain temperature adjustment bamboo viscose, when carrying out yellow operation, dissolution process, mixed processes or spinning process, add described phase-change microcapsule colloidal solution in described material, described yellow operation may further comprise the steps:
To alkalizing through adding alkali lye in the alkali cellulose of experienced operation, alkalization temperature is 15 ℃～25 ℃;
To the yellow reaction temperature, alkalization end back added carbon disulfide and carries out yellow 10min～15min in described alkali cellulose with described alkali cellulose temperature adjustment before alkalization finished.
According to the present invention, at first phase-change microcapsule is prepared into colloidal solution by high-speed stirred, the mass concentration of phase-change microcapsule is 1%～20% in the described colloidal solution, is preferably 5%～15%, more preferably 7%～10%.The present invention does not have particular restriction to employed dissolving, can be preferably sodium hydroxide solution for water or alkali lye.
In order to make described colloidal solution more even, preferably in described colloidal solution, add dispersant, the addition of described dispersant is preferably the 0.1wt%～5wt% of described phase-change microcapsule, more preferably 0.5wt%～3wt%.The present invention does not have particular restriction to described dispersant, includes but not limited to conventional dispersants such as sodium phosphate trimer, calgon, sodium pyrophosphate, aliphatic alcohol polyethenoxy phosphate, polyoxyethylene nonylphenol ether, polyacrylamide.
After obtaining colloidal solution, the pH value of described colloidal solution is adjusted to 5～10, is preferably 6～9, more preferably 7～8.
Described colloidal solution can add in arbitrary operation of yellow operation, dissolution process, mixed processes or spinning process in the bamboo production process of viscose fiber, is preferably in spinning process to add, and more preferably the mode with injection before spinning adds.
Because bamboo wood plant cell shape difference, the alkali cellulose quality heterogeneity that obtains after treatment exists to be difficult to the problem of dissolving, being difficult to filter in subsequent processes, causes the viscose that obtains through spinning second-rate; And adding the intractability that phase-change microcapsule can strengthen bamboo cellulose, the present invention strengthens bamboo cellulose by adjusting the yellow technological parameter, so that the carrying out smoothly of operations such as follow-up dissolving, filtration, spinning.
The present invention adopts wet method yellow technology, may further comprise the steps:
To alkalizing through adding alkali lye in the alkali cellulose of experienced operation, alkalization temperature is 15 ℃～25 ℃;
To the yellow reaction temperature, alkalization end back added carbon disulfide and carries out yellow 10min～15min in described alkali cellulose with described alkali cellulose temperature adjustment before alkalization finished.
According to the present invention, described alkalization temperature is preferably 18 ℃～23 ℃, more preferably 20 ℃～22 ℃; The time of described alkalization is preferably 30min～60min, and more preferably 35min～55min most preferably is 40min～50min.
In order to strengthen the effect of yellow, the present invention regulates at the alkalization trip temperature that finishes to advance, and described alkali cellulose temperature adjustment to the yellow reaction temperature, is added carbon disulfide and begins to carry out yellow in described alkali cellulose.Described yellow reaction temperature is preferably 18 ℃～35 ℃, more preferably 20 ℃～32 ℃, most preferably is 21 ℃～28 ℃.The time of described yellow is preferably 70min～120min, and more preferably 80min～110min most preferably is 90min～100min.When carrying out yellow, described carbon disulfide consumption is preferably 30%～42% of alpha cellulose weight in the described alkali cellulose, and more preferably 32%～40%, most preferably be 35%～38%.
After in arbitrary operation of above-mentioned yellow, dissolving, mixing or spinning, adding described colloidal solution, when carrying out spinning process, spinning glue need meet the following conditions: alpha cellulose content is 7.5wt%～10.5wt%, is preferably 8wt%～10wt%, more preferably 8.5wt%～9.5wt%; Total alkali is 4.5wt%～6.5wt%, is preferably 5wt%～6wt%; Viscosity is 20s～50s, is preferably 25s～40s, more preferably 25s～35s; Degree of ripeness is 7～12mL, is preferably 8mL～11mL, 9mL～10mL more preferably, and wherein degree of ripeness is with 10% ammonium chloride value representation.When carrying out spinning process, acid bath need be satisfied following condition: sulfuric acid content is 90g/L～140g/L, is preferably 100g/L～130g/L, more preferably 110g/L～120g/L; Zinc sulfate content is 8.5g/L～22g/L, is preferably 10g/L～20g/L, more preferably 12g/L～15g/L; Sodium sulphate content is 280g/L～355g/L, is preferably 290g/L～340g/L, more preferably 300g/L～320g/L.Temperature when carrying out acid bath is preferably 40 ℃～60 ℃, is preferably 45 ℃～55 ℃.
Spinning glue and acid bath need be satisfied above-mentioned condition when adding described colloidal solution in the above-mentioned operation in process of production and carrying out spinning process, the present invention does not have particular restriction to the preparation process of described temperature adjustment bamboo viscose, comprises following process well known to those skilled in the art: dipping, squeezing, pulverizing, experienced, yellow, dissolving, mixing, deaeration, filtration, spinning, cut-out, drawing-off, post processing etc.
After obtaining temperature adjustment bamboo viscose, described bamboo viscose is carried out temperature adjustment function test, it solidifies heat release enthalpy 〉=0.5J/g, and fusion heat absorption enthalpy 〉=0.5J/g illustrates that it can regulate temperature.
Described temperature adjustment bamboo viscose is carried out sterilization, bacteria resistance function test, and it is to antibacterial value＞2.0 of staphylococcus aureus, and sterilizing value＞0 illustrates that it has sterilization, bacteria resistance function.
Described temperature adjustment bamboo viscose is carried out Mechanics Performance Testing, and its dried fracture strength can reach 1.93CN/dtex, and wet breaking strength can reach 1.12CN/dtex.
The present invention adds phase-change microcapsule in the bamboo production process of viscose fiber, the bamboo viscose that obtains not only has temperature adjustment function but also have antibacterial, sterilizing function.Compare with adding phase-change microcapsule in common viscose fiber, because the bamboo viscose has the function of restraining and sterilizing bacteria, for avoiding phase-change microcapsule to influence the function of bamboo viscose itself, need the strict addition of controlling phase-change microcapsule: addition is very few, does not have the effect of temperature adjustment; Addition is too much, can influence that bamboo viscose itself is antibacterial, the function of sterilization.Simultaneously, the addition of phase-change microcapsule also can influence the production difficulty of bamboo viscose, within the acceptable range, to the adjustment of the addition of phase-change microcapsule with to the adjustment of each technological parameter in the production process all is that those skilled in the art can know by inference according to content disclosed by the invention.
In order to further specify the present invention, temperature adjustment bamboo viscose provided by the invention and preparation method thereof is described in detail below in conjunction with embodiment.
Embodiment 1
The phase-change microcapsule that the present invention uses Beijing Julong Bofang Science ﹠ Technology Academy to produce: the transformation temperature of described microcapsules is 16 ℃, and average grain diameter is 2.41 μ m, and solidifying the heat release enthalpy is 97J/g, and fusion heat absorption enthalpy is 99J/g;
With described phase-change microcapsule, sodium phosphate trimer and mass concentration is that 5% sodium hydroxide solution mixes, obtain mass concentration after the stirring and be 3% phase-change microcapsule colloidal solution, wherein, described sodium phosphate trimer is the 0.3wt% of described phase-change microcapsule, and the pH value of described phase-change microcapsule colloidal solution is 8.
With the bamboo wood pulp through feeding intake, flood, after the squeezing, pulverization process, obtaining alkali cellulose; After described alkali cellulose carried out experienced, yellow and handle, proceed dissolution process, in the dissolution process process, add described phase-change microcapsule colloidal solution in the cellulose xanthate that obtains to handling through yellow, described phase-change microcapsule and described cellulosic mass ratio are 5: 86, and described yellow treatment process is:
Alkalize to the NaOH that through adding mass concentration in the alkali cellulose of experienced operation is 5%, alkalization temperature is 15 ℃, and alkalization time is 40min;
Behind the alkalization 30min, described yellow reaction temperature is transferred to 30 ℃, the carbon disulfide that alkalization finishes back adding alpha cellulose weight 30% in described alkali cellulose carries out yellow, and the yellow time is 70min;
Alkali cellulose through dissolution process is proceeded mixing, deaeration, filtration, spinning and postprocessing working procedures, obtain temperature adjustment bamboo viscose, when carrying out the spinning processing, spinning glue composed as follows: alpha cellulose content is 8.85wt%, total alkali is 5.50wt%, viscosity is 35s, and degree of ripeness is 9.1mL (10% an ammonium chloride value); Acid bath composed as follows: sulfuric acid is 118g/L, and zinc sulfate content is 15g/L, and sodium sulphate content is 340g/L, and the acid bath temperature is 45 ℃.
The constituent and the content of the temperature adjustment bamboo viscose that obtains are as follows: 5% phase-change microcapsule; 8.8% water; 0.2% finish and 86% bamboo cellulose.
Described temperature adjustment bamboo viscose is carried out electron-microscope scanning, referring to Fig. 1, the electron microscope photo scanning of the temperature adjustment bamboo viscose that Fig. 1 provides for the embodiment of the invention 1.
Described temperature adjustment bamboo viscose is tested, and it solidifies the heat release enthalpy is 1.95J/g, and fusion heat absorption enthalpy is 2.47J/g.
Described temperature adjustment bamboo viscose is carried out antibacterial, bactericidal property test, and the result shows that its antibacterial value to staphylococcus aureus is 2.5, and sterilizing value is 0.8.
Described temperature adjustment bamboo viscose is carried out Mechanics Performance Testing, and its dried fracture strength is 1.93CN/dtex, and wet breaking strength is 0.92CN/dtex.
Embodiment 2
The phase-change microcapsule that the present invention uses Beijing Julong Bofang Science ﹠ Technology Academy to produce: the transformation temperature of described microcapsules is 20 ℃, and average grain diameter is 5.1 μ m, and solidifying the heat release enthalpy is 100J/g, and fusion heat absorption enthalpy is 90J/g;
With described phase-change microcapsule, polyoxyethylene nonylphenol ether and mass concentration is that 5% sodium hydroxide solution mixes, obtain mass concentration after the stirring and be 8% phase-change microcapsule colloidal solution, wherein, described polyoxyethylene nonylphenol ether is the 1.0wt% of described phase-change microcapsule, and the pH value of described phase-change microcapsule colloidal solution is 5.
With the bamboo wood pulp through feeding intake, flood, after the squeezing, pulverization process, obtaining alkali cellulose; After described alkali cellulose carried out experienced, yellow, dissolving, mixing, filtration, deaeration and handle, proceeding spinning handles, in the spinning processing procedure, in described viscose glue, add described phase-change microcapsule colloidal solution, described phase-change microcapsule and described to subtract cellulosic mass ratio be 8: 81; At this moment, spinning glue is composed as follows: alpha cellulose content is 9.12wt%, and total alkali is 5.64wt%, and viscosity is 40s, and degree of ripeness is 8.0mL (10% an ammonium chloride value); Acid bath composed as follows: sulfuric acid is 127g/L, and zinc sulfate content is 11g/L, and sodium sulphate content is 330g/L, and the acid bath temperature is 51 ℃;
In the treatment process of yellow described in the said process be:
Alkalize to the NaOH that through adding mass concentration in the alkali cellulose of experienced operation is 5%, alkalization temperature is 25 ℃, and alkalization time is 50min;
Behind the alkalization 40min, described yellow reaction temperature is transferred to 28 ℃, the carbon disulfide that alkalization finishes back adding alpha cellulose weight 38% in described alkali cellulose carries out yellow, and the yellow time is 100min.
The constituent and the content of the temperature adjustment bamboo viscose that obtains are as follows: 8% phase-change microcapsule; 10.7% water; 0.3% finish and 81% bamboo cellulose.
Described temperature adjustment bamboo viscose is tested, and it solidifies the heat release enthalpy is 4.4J/g, and fusion heat absorption enthalpy is 4.3J/g.
Described temperature adjustment bamboo viscose is carried out antibacterial, bactericidal property test, and the result shows that its antibacterial value to staphylococcus aureus is 2.3, and sterilizing value is 0.7.
Described temperature adjustment bamboo viscose is carried out Mechanics Performance Testing, and its dried fracture strength is 2.08CN/dtex, and wet breaking strength is 1.12CN/dtex.
Embodiment 3
The phase-change microcapsule that the present invention uses Beijing Julong Bofang Science ﹠ Technology Academy to produce: the transformation temperature of described microcapsules is 30 ℃, and average grain diameter is 10 μ m, and solidifying the heat release enthalpy is 102J/g, and fusion heat absorption enthalpy is 100J/g;
With described phase-change microcapsule, aliphatic alcohol polyethenoxy phosphate and mass concentration is that 5% sodium hydroxide solution mixes, obtain mass concentration after the stirring and be 10% phase-change microcapsule colloidal solution, wherein, described aliphatic alcohol polyethenoxy phosphate is the 2.2wt% of described phase-change microcapsule, and the pH value of described phase-change microcapsule colloidal solution is 10.
With the bamboo wood pulp through feeding intake, flood, after the squeezing, pulverization process, obtaining alkali cellulose; After described alkali cellulose carried out experienced processing, proceed yellow and handle, described yellow treatment process is:
Alkalize to the NaOH that through adding mass concentration in the alkali cellulose of experienced operation is 5%, alkalization temperature is 23 ℃, and alkalization time is 50min;
Behind the alkalization 35min, described yellow reaction temperature is transferred to 32 ℃, carbon disulfide and described phase-change microcapsule colloidal solution that alkalization finishes back adding alpha cellulose weight 30% in described alkali cellulose carry out yellow, and the yellow time is 110min; The mass ratio of described phase-change microcapsule and described alkali cellulose is 10: 78;
The cellulose xanthate of handling through yellow is proceeded dissolving, mixing, deaeration, filtration, spinning and postprocessing working procedures, obtain temperature adjustment bamboo viscose, when carrying out the spinning processing, spinning glue composed as follows: alpha cellulose content is 8.52wt%, total alkali is 5.50wt%, viscosity is 42s, and degree of ripeness is 9.3mL (10% an ammonium chloride value); Acid bath composed as follows: sulfuric acid is 136g/L, and zinc sulfate content is 15g/L, and sodium sulphate content is 295g/L, and the acid bath temperature is 48 ℃.
The constituent and the content of the temperature adjustment bamboo viscose that obtains are as follows: 10% phase-change microcapsule; 11.8% water; 0.2% finish and 78% bamboo cellulose.
Described temperature adjustment bamboo viscose is tested, and it solidifies the heat release enthalpy is 4.18J/g, and fusion heat absorption enthalpy is 3.05J/g.
Described temperature adjustment bamboo viscose is carried out antibacterial, bactericidal property test, and the result shows that its antibacterial value to staphylococcus aureus is 2.6, and sterilizing value is 0.6.
Described temperature adjustment bamboo viscose is carried out Mechanics Performance Testing, and its dried fracture strength is 1.46CN/dtex, and wet breaking strength is 0.68CN/dtex.
Embodiment 4
The phase-change microcapsule that the present invention uses Beijing Julong Bofang Science ﹠ Technology Academy to produce: the transformation temperature of described microcapsules is 36 ℃, and average grain diameter is 8 μ m, and solidifying the heat release enthalpy is 120J/g, and fusion heat absorption enthalpy is 123J/g;
With described phase-change microcapsule, calgon and mass concentration is that 3.5% sodium hydroxide solution mixes, obtain mass concentration after the stirring and be 20% phase-change microcapsule colloidal solution, wherein, described calgon is the 1.0wt% of described phase-change microcapsule, and the pH value of described phase-change microcapsule colloidal solution is 7.
With the bamboo wood pulp through feeding intake, flood, after the squeezing, pulverization process, obtaining alkali cellulose; After described alkali cellulose carried out experienced, yellow, dissolving, mixing, filtration, deaeration and handle, proceeding spinning handles, in the spinning processing procedure, add described phase-change microcapsule colloidal solution in described alkali cellulose, the mass ratio of described phase-change microcapsule and described alkali cellulose is 13: 78; At this moment, spinning glue is composed as follows: alpha cellulose content is 8.86wt%, and total alkali is 5.64wt%, and viscosity is 38s, and degree of ripeness is 11mL (10% an ammonium chloride value); Acid bath composed as follows: sulfuric acid is 133g/L, and zinc sulfate content is 16g/L, and sodium sulphate content is 280g/L, and the acid bath temperature is 52 ℃;
In above-mentioned processing procedure, described yellow treatment process is:
Alkalize to the NaOH that through adding mass concentration in the alkali cellulose of experienced operation is 5%, alkalization temperature is 20 ℃, and alkalization time is 60min;
Behind the alkalization 45min, described yellow reaction temperature is transferred to 23 ℃, the carbon disulfide that alkalization finishes back adding alpha cellulose weight 35% in described alkali cellulose carries out yellow, and the yellow time is 100min;
The constituent and the content of the temperature adjustment bamboo viscose that obtains are as follows: 13% phase-change microcapsule; 9% water; 0.25% finish and 77.75% bamboo cellulose.
Described temperature adjustment bamboo viscose is tested, and it solidifies the heat release enthalpy is 5.44J/g, and fusion heat absorption enthalpy is 4.91J/g.
Described temperature adjustment bamboo viscose is carried out antibacterial, bactericidal property test, and the result shows that its antibacterial value to staphylococcus aureus is 2.2, and sterilizing value is 0.6.
Described temperature adjustment bamboo viscose is carried out Mechanics Performance Testing, and its dried fracture strength is 1.43CN/dtex, and wet breaking strength is 0.62CN/dtex.
By the foregoing description as can be known, temperature adjustment bamboo viscose provided by the invention has good temperature adjusting performance, restraining and sterilizing bacteria function and mechanical property.
The explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. temperature adjustment bamboo viscose comprises:
The phase-change microcapsule of 3wt%～15wt%;
The water of 7wt%～15wt%;
The finish of 0.15wt%～0.30wt%;
Surplus is a bamboo cellulose.
2. temperature adjustment bamboo viscose according to claim 1 is characterized in that the capsule-core of described phase-change microcapsule is a linear paraffin, and cyst wall is urea aldehyde, polyureas, epoxy resin, polyurethane, polyester, polyamide, polystyrene or polyacrylic resin.
3. the preparation method of claim 1 or 2 described temperature adjustment bamboo viscoses comprises:
It is 1%～20% phase-change microcapsule colloidal solution that mass concentration is provided;
The bamboo cellulose pulp after dipping, squeezing and pulverization process, is obtained alkali cellulose;
After the described alkali cellulose experienced operation of process successively, yellow operation, dissolution process, mixed processes, deaeration operation, filtration operation, spinning process and postprocessing working procedures, obtain temperature adjustment bamboo viscose, when carrying out yellow operation, dissolution process, mixed processes or spinning process, add described phase-change microcapsule colloidal solution in material, described yellow operation may further comprise the steps:
To alkalizing through adding alkali lye in the alkali cellulose of experienced operation, alkalization temperature is 15 ℃～25 ℃;
To the yellow reaction temperature, alkalization end back added carbon disulfide and carries out yellow 10min～15min in described alkali cellulose with described alkali cellulose temperature adjustment before alkalization finished.
4. preparation method according to claim 3 is characterized in that, when carrying out the spinning processing, adds described phase-change microcapsule colloidal solution in described material.
5. preparation method according to claim 4 is characterized in that, the method that adds described phase-change microcapsule colloidal solution in described material adds for injection before spinning.
6. preparation method according to claim 3 is characterized in that, the time of described alkalization is 30min～60min.
7. preparation method according to claim 3 is characterized in that, described yellow reaction temperature is 18 ℃～35 ℃.
8. preparation method according to claim 3 is characterized in that, the described yellow time is 70min～120min.
9. preparation method according to claim 3 is characterized in that, when carrying out yellow, described carbon disulfide consumption be in the described alkali cellulose alpha cellulose weight 30%～42%.
10. preparation method according to claim 3 is characterized in that, the pH value of described phase-change microcapsule colloidal solution is 5～10.
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| CN102146592A (en) * | 2011-01-25 | 2011-08-10 | 江苏金太阳纺织科技有限公司 | Regenerated cellulose fat-burning fiber and production method thereof |
| CN102766915A (en) * | 2011-12-30 | 2012-11-07 | 上海水星家用纺织品股份有限公司 | Pearl bamboo fiber and its preparation method |
| CN102839440A (en) * | 2012-09-24 | 2012-12-26 | 成都丽雅纤维股份有限公司 | Cotton, wood and bamboo composite pulp phase-change microcapsule viscose and preparation method thereof |
| CN103938290A (en) * | 2014-02-28 | 2014-07-23 | 苏州恒光化纤有限公司 | Preparation method of hollow staple fiber |
| CN104389039A (en) * | 2014-11-06 | 2015-03-04 | 龙达（江西）差别化化学纤维有限公司 | Method for producing temperature-regulating viscose fibers |
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| CN102146592A (en) * | 2011-01-25 | 2011-08-10 | 江苏金太阳纺织科技有限公司 | Regenerated cellulose fat-burning fiber and production method thereof |
| CN102766915A (en) * | 2011-12-30 | 2012-11-07 | 上海水星家用纺织品股份有限公司 | Pearl bamboo fiber and its preparation method |
| CN102839440A (en) * | 2012-09-24 | 2012-12-26 | 成都丽雅纤维股份有限公司 | Cotton, wood and bamboo composite pulp phase-change microcapsule viscose and preparation method thereof |
| CN102839440B (en) * | 2012-09-24 | 2014-11-26 | 成都丽雅纤维股份有限公司 | Cotton, wood and bamboo composite pulp phase-change microcapsule viscose and preparation method thereof |
| CN103938290A (en) * | 2014-02-28 | 2014-07-23 | 苏州恒光化纤有限公司 | Preparation method of hollow staple fiber |
| CN104389039A (en) * | 2014-11-06 | 2015-03-04 | 龙达（江西）差别化化学纤维有限公司 | Method for producing temperature-regulating viscose fibers |
| CN105696096A (en) * | 2015-07-03 | 2016-06-22 | 怀宁县宝友工贸有限公司 | Temperature adjustable fabric |
| CN105951261A (en) * | 2016-06-12 | 2016-09-21 | 合肥市再德高分子材料有限公司 | Fiber fabric with heat storage and temperature adjusting functions |
| CN105951261B (en) * | 2016-06-12 | 2019-07-02 | 合肥市再德高分子材料有限公司 | A kind of fabric lining with heat-accumulation temperature-adjustment function |
| CN106567253A (en) * | 2016-10-25 | 2017-04-19 | 浙江理工大学 | Thermoregulation thermal-storage bamboo fiber and preparation method thereof |
| CN108822343A (en) * | 2018-04-25 | 2018-11-16 | 武汉水木弘新材料有限公司 | A kind of preparation method of phase transformation material of regenerated cellulose |
| CN111676536A (en) * | 2020-06-05 | 2020-09-18 | 西安工程大学 | Preparation method of temperature-adjusting microcapsule and graphene compounded viscose fiber |
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