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Thermoregulation thermal-storage bamboo fiber and preparation method thereof

A technology of bamboo fiber and heat storage, applied in plant fibers, chemical instruments and methods, heat exchange materials, etc., can solve the problems of a large number of adhesives, difficult fibers of adhesives, and weakening of heat storage function of temperature adjustment

Inactive Publication Date: 2017-04-19
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, coating and printing techniques require a large amount of adhesive, resulting in poor fabric comfort
The impregnation method uses a small amount of adhesive or the adhesion ability of the phase change microcapsule shell itself to treat the fiber or fabric, which has little effect on the hand feel and comfort. The disadvantage is that the temperature regulation and heat storage are caused by the adhesion fastness of the phase change microcapsule Function gradually weakens during use
Especially for chemical fibers such as polyester, due to the lack of polar functional groups on the surface, it is difficult for the capsule and the added adhesive to adhere strongly to the surface of the fiber, and it is easy to fall off during use, resulting in a decrease in the temperature regulation function
However, in view of the microscopic morphology of bamboo fiber, there are countless fine grooves on the surface of the fiber.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Thermoregulation thermal-storage bamboo fiber and preparation method thereof
  • Thermoregulation thermal-storage bamboo fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Oil phase: Weigh 400g of phase change material lauryl alcohol, 300g of methyl methacrylate and 15g of hydroxyethyl methacrylate mixture, and 3g of azobisisobutyronitrile, stir at 35°C to make it completely Mix well; water phase: weigh 15g of sodium dodecylbenzenesulfonate and add it to 3L of deionized water, activate at 35°C.

[0018] (2) Slowly add the oil phase to the water phase, and emulsify at 5000r / m for 30 minutes; transfer the emulsion to the reactor, and heat it to 80°C under nitrogen to react for 8 hours; after the reaction, take part of the emulsion to test the particle size , the result D50 ≤ 0.8μnm. Demulsification with sodium chloride aqueous solution, washing with hot water three times, suction filtration and drying to obtain phase change microcapsule powder. Obtained phase-change capsule powder was observed with an electron microscope, and it was found that the morphology of the capsule was smooth and spherical, and the particle size was about 0.5-0...

Embodiment 2

[0021] (1) Oil phase: Weigh 500g of phase change material lauryl alcohol, 250g of methyl methacrylate and 9g of hydroxyethyl methacrylate mixture, and 2.5g of azobisisobutyronitrile, stir at 40°C to make Mix completely; water phase: weigh 10g of sodium dodecylbenzenesulfonate and add it to 3L of deionized water, activate at 40°C.

[0022] (2) Slowly add the oil phase to the water phase, and emulsify at 8000r / m for 30 minutes; transfer the emulsion to a reaction kettle, and heat it to 75°C for 12 hours under nitrogen.

[0023] (3) Bamboo fiber is impregnated in the above emulsion, the impregnation temperature is 40°C, and the impregnation time is 5 minutes; the impregnated bamboo fiber is dried at 90°C.

Embodiment 3

[0025] (1) Oil phase: Weigh 800g phase change material lauryl alcohol, 500g methyl methacrylate and 15g hydroxyethyl methacrylate mixture, and 5g azobisisobutyronitrile, stir at 40°C to make it completely Mix well; water phase: weigh 30g of sodium dodecylbenzenesulfonate and add to 4L of deionized water, activate at 40°C.

[0026] (2) Slowly add the oil phase to the water phase, and emulsify at 10,000r / m for 30 minutes; transfer the emulsion to a reaction kettle, and heat it to 80°C for 5 hours under nitrogen.

[0027] (3) Bamboo fiber is impregnated in the above emulsion, the impregnation temperature is 60°C, and the impregnation time is 8 minutes; the impregnated bamboo fiber is dried at 80°C.

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Abstract

The invention provides thermoregulation thermal-storage bamboo fiber and a preparation method thereof. The bamboo fiber can be applied to thermoregulation thermal-storage textile and has an obvious thermoregulation effect. The thermoregulation thermal-storage bamboo fiber is characterized in that phase-change nanocapsules are attached to the surface of the bamboo fiber. According to the nanocapsules, lauryl alcohol is used as the core material, and polymethyl methacrylate and a corresponding modifier are used as the shell. The nanocapsules have high latent heat and strong adhesion property. The capsules can be firmly attached to the surface of the bamboo fiber and have good wash fastness. Latent heat of the thermoregulation thermal-storage bamboo fiber can reach 25 J / g and above.

Description

technical field [0001] The invention belongs to the field of development and preparation of functional textiles, and in particular relates to a temperature-regulating and heat-storing bamboo fiber and a preparation method thereof. Background technique [0002] Bamboo fiber is a cellulose fiber extracted from naturally growing bamboo, and it is the fifth largest natural fiber after cotton, hemp, wool and silk. Bamboo fiber has the characteristics of good air permeability, instant water absorption, strong wear resistance and good dyeability, and has natural antibacterial, antibacterial, anti-mite, deodorant and anti-ultraviolet functions. The cross-section of bamboo fiber is concave-convex and deformed, covered with approximately oval pores, highly hollow, and has a strong capillary effect. Bamboo-cotton blended yarn with a bamboo fiber content of less than 30% is suitable for underwear, socks, and can also be used to make medical care products. [0003] Temperature-adjustin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/263C09K5/06C08F220/14C08F220/28D06M101/06
CPCC09K5/063D06M15/263C08F220/14D06M2101/06C08F220/281
Inventor 张国庆周岚刘国金崔贞超汪怡来
Owner ZHEJIANG SCI-TECH UNIV