Preparation method of temperature-sensitive fabric
阅读说明：本技术 一种温感面料的制备方法 (Preparation method of temperature-sensitive fabric ) 是由 陈丽芳 于 2020-12-07 设计创作，主要内容包括：本发明提供了一种温感面料的制备方法,包括以下步骤：S1.吸附材料的制备；S2.相变材料的制备；S3.复合相变材料的制备；S4.复合相变材料的包覆定形；S5.复合定形相变材料的改性；S6.改性复合定形相变材料的接枝涤纶面料。本发明创造性的选用壳聚糖作为相变的载体材料,在加入相变材料后用乙基纤维素进行报复,得到可溶解于,但不溶融于壳聚糖整理的相变载体材料,织物在壳聚糖整理后,手感维持原来未整理织物的手感,甚至优于原来的手感。(The invention provides a preparation method of a temperature-sensitive fabric, which comprises the following steps: s1, preparing an adsorbing material; s2, preparing a phase-change material; s3, preparing a composite phase change material; s4, coating and shaping the composite phase change material; s5, modifying the composite shape-stabilized phase change material; s6, modifying the grafted polyester fabric of the composite shape-stabilized phase change material. According to the invention, chitosan is creatively selected as a phase-change carrier material, and ethyl cellulose is used for repopulating after the phase-change material is added, so that the phase-change carrier material which can be dissolved but not dissolved in chitosan finishing is obtained, and after the chitosan finishing, the hand feeling of the fabric maintains the original hand feeling of the fabric which is not finished, and is even better than the original hand feeling.)
1. The preparation method of the temperature-sensitive fabric is characterized by comprising the following steps of:
s1, preparation of an adsorbing material: preparing hollow chitosan microspheres;
s2, preparing the phase-change material, namely stirring and mixing the paraffin and the 1-dodecanol in a water bath uniformly to obtain a binary phase-change blend;
s3, preparing the composite phase-change material: adding the binary phase change blend prepared in the step S2 into a container containing chitosan adsorption material, heating and drying, and then performing ultrasonic dispersion to obtain a composite phase change material with uniform adsorption;
s4, coating and shaping of the composite phase change material: placing the composite phase-change material prepared in the step S4 in a beaker, dropwise adding a proper amount of prepared composite coating agent, ultrasonically dispersing, filtering the uniformly mixed material, and placing the material in a baking oven for drying to obtain a composite shape-stabilized phase-change material;
s5, modification of the composite shape-stabilized phase change material: preparing an ethyl cellulose solution, spraying the prepared ethyl cellulose solution on the surface of the composite shape-stabilized phase-change material prepared in the step S4, and then carrying out heat treatment at a certain temperature to obtain a coated and modified composite shape-stabilized phase-change material;
s6, modifying the grafted polyester fabric of the composite shape-stabilized phase change material: and (4) adding the coated and modified composite shape-stabilized phase change material prepared in the S5 into a chitosan solution, adding the pretreated polyester fabric into the chitosan solution for dipping, and repeating the steps for multiple times to obtain the temperature-sensitive fabric.
2. The method for preparing the temperature-sensitive fabric according to claim 1, wherein the step S1 of preparing the hollow chitosan microspheres comprises the following steps:
s1, taking SiO2Dispersing in water to form a dispersion, stirring to form SiO2Slowly dripping the dispersion liquid into a chitosan solution with a certain concentration, and continuously stirring after the dispersion liquid is added to obtain the SiO2The surface is assembled with the microsphere with the chitosan layer;
s2, taking SiO2Adding the microspheres with the chitosan layer assembled on the surface into HF solution, standing, and removing SiO2To prepare hollow chitosan microspheres;
and S3, adding the hollow chitosan microspheres into a sodium carbonate solution for soaking, washing, filtering and freeze-drying to obtain the hollow chitosan microspheres with etched surfaces.
3. The preparation method of the temperature-sensitive fabric according to claim 2, characterized by comprising the following steps: SiO in the step S12The concentration of the aqueous solution is 10-20g/L, and the concentration of the chitosan is 10-20 g/L.
4. The preparation method of the temperature-sensitive fabric according to claim 2, characterized by comprising the following steps: the concentration of the HF solution in the step S2 is 1-3 wt%.
5. The preparation method of the temperature-sensitive fabric according to claim 2, characterized by comprising the following steps: in the step S3, the concentration of the sodium carbonate solution is 0.5-1.2mol/L, the soaking time is 60-120min, and the freeze drying temperature is-20 to-50 ℃.
6. The preparation method of the temperature-sensitive fabric according to claim 1, characterized by comprising the following steps: the mass ratio of the paraffin to the 1-dodecanol in the step S2 is 3: 4-5.
7. The preparation method of the temperature-sensitive fabric according to claim 1, characterized by comprising the following steps: in the step S3, the drying temperature is more than 30 ℃ and the time is 90-140 min.
8. The preparation method of the temperature-sensitive fabric according to claim 1, characterized by comprising the following steps: the dipping time in the step S6 is 20-60 min.
9. The preparation method of the temperature-sensitive fabric according to claim 1, characterized by comprising the following steps: the concentration of the chitosan solution in the step S6 is 1-2 g/L.
Technical Field
The invention relates to a functional fabric, in particular to a preparation method of a temperature-sensitive fabric.
Background
When the environment of the human body changes, heat transfer can occur, when the normal function of the human body can not keep the heat balance, the human body feels uncomfortable, and at the moment, the clothes are required to be adjusted to ensure the heat balance in the microclimate area. The phase-change temperature-regulating material can realize the temperature-regulating function of absorbing or releasing heat through phase change when the environmental temperature changes, and is gradually applied to the field of textile and clothing. Through the development of many years, the development of novel phase-change temperature-regulating materials obtains some research results, however, the phase-change materials cannot be directly added on clothing materials to realize the temperature-regulating function, and the organic combination of the phase-change temperature-regulating materials and textile materials needs to be realized by means of some special methods.
Phase change materials were first developed by foreign researchers, temperature regulating garments capable of being used in specific environments have been developed, and some products have been put into production. The oil crisis in the last 70 s has caused the attention of developed countries to the heat energy storage technology, and is continuously widely applied in the aspects of new energy development and energy conservation and emission reduction. Developed countries, represented by the united states of america, also provide a great deal of policy support for the research of thermal energy storage technologies, and make long-term development plans to ensure that they are in the lead position for a long time in the development and application of thermal energy storage technologies.
The common production methods for phase-change textile materials are 4: spinning, phase change material microencapsulation, hollow fiber filling and post-finishing. The post-finishing method is commonly used as a dipping method and a coating method. Wherein the process flow of the dipping method is as follows: preparing a steeping liquor → soaking, rolling and drying the clothing material → soaping the clothing material to obtain the fabric containing the phase-change material; the coating method comprises the following process flows: coating slurry preparation → fabric coating → baking. Besides phase-change material microcapsules, the impregnation liquid and the coating slurry are often added with an emulsifier, a catalyst, a cross-linking agent, a dispersing agent and the like, so that the after-finishing effect of the fabric is improved. The method is simple to operate, but the hand feeling of the textile is reduced to a certain degree, and meanwhile, the durability of the after-finishing effect in the using process is also improved.
Disclosure of Invention
The technical problem to be solved is as follows: the invention aims to provide a preparation method of a temperature-sensitive fabric, and the obtained fabric has good hand feeling and long durability.
The technical scheme is as follows: a preparation method of a temperature-sensitive fabric comprises the following steps:
s1, preparation of an adsorbing material: preparing hollow chitosan microspheres;
s2, preparing the phase-change material, namely stirring and mixing the paraffin and the 1-dodecanol in a water bath uniformly to obtain a binary phase-change blend,
s3, preparing the composite phase-change material: adding the binary phase change blend prepared in the step S2 into a container containing chitosan adsorption material, heating and drying, and then performing ultrasonic dispersion to obtain a composite phase change material with uniform adsorption;
s4, coating and shaping of the composite phase change material: placing the composite phase-change material prepared in the step S4 in a beaker, dropwise adding a proper amount of prepared composite coating agent, ultrasonically dispersing, filtering the uniformly mixed material, and placing the material in a baking oven for drying to obtain a composite shape-stabilized phase-change material;
s5, modification of the composite shape-stabilized phase change material: preparing an ethyl cellulose solution, spraying the prepared ethyl cellulose solution on the surface of the composite shape-stabilized phase-change material prepared in the step S4, and then carrying out heat treatment at a certain temperature to obtain a coated and modified composite shape-stabilized phase-change material;
s6, modifying the grafted polyester fabric of the composite shape-stabilized phase change material: adding the coated and modified composite shape-stabilized phase change material prepared in the step S5 into a chitosan solution, adding the pretreated polyester fabric into the chitosan solution for dipping, and repeating the steps for multiple times to obtain a temperature-sensitive fabric;
preferably, the preparation of the hollow chitosan microspheres in step S1 includes the following steps:
s1, taking SiO2Dispersing in water to form a dispersion, stirring to form SiO2Slowly dripping the dispersion liquid into a chitosan solution with a certain concentration, and continuously stirring after the dispersion liquid is added to obtain the SiO2The surface is assembled with the microsphere with the chitosan layer;
s2, taking SiO2Adding the microspheres with the chitosan layer assembled on the surface into HF solution, standing, and removing SiO2To prepare hollow chitosan microspheres;
and S3, adding the hollow chitosan microspheres into a sodium carbonate solution for soaking, washing, filtering and freeze-drying to obtain the hollow chitosan microspheres with etched surfaces.
Preferably, the SiO in the step S12The concentration of the aqueous solution is 10-20g/L, and the concentration of the chitosan is 10-20 g/L.
Preferably, the concentration of the HF solution in the step S2 is 1-3 wt%.
Preferably, the concentration of the sodium carbonate solution in the step S3 is 0.5-1.2mol/L, the soaking time is 60-120min, and the freeze-drying temperature is-20 to-50 ℃.
Preferably, the mass ratio of the paraffin to the 1-dodecanol in the step S2 is 3: 4-5.
Preferably, the drying temperature in the step S3 is more than 30 ℃ and the time is 90-140 min.
Preferably, the dipping time in the step S6 is 20-60 min.
Preferably, the concentration of the chitosan solution in the step S6 is 1-2 g/L.
Has the advantages that: the invention has the following advantages:
1. the paraffin wax with the C atom content of 13-24 and the 1-dodecanol are selected, the melting point of the paraffin wax is 22-28 ℃, the melting point of the 1-dodecanol is 26 ℃, and due to the self limitation of each material, the single material cannot meet the maximization of the energy storage efficiency. The composite material formed by the two materials of the invention obtains 'advantage complementation' on the premise of keeping the excellent performance of the material;
2. according to the invention, chitosan is creatively selected as a phase-change carrier material, and ethyl cellulose is used for repopulating after the phase-change material is added, so that the phase-change carrier material which can be dissolved but not dissolved in chitosan finishing is obtained, and after the chitosan finishing, the hand feeling of the fabric maintains the original hand feeling of the fabric which is not finished, and is even better than the original hand feeling.
Detailed Description
Example 1
A preparation method of a temperature-sensitive fabric comprises the following steps:
s1, preparation of an adsorbing material: preparing hollow chitosan microspheres;
s2, preparing the phase-change material, namely mixing paraffin and 1-dodecanol according to a mass ratio of 3: 4 stirring and mixing evenly in water bath to obtain binary phase change blend,
s3, preparing the composite phase-change material: adding the binary phase change blend prepared in the step S2 into a container containing chitosan adsorption material, heating and drying, wherein the drying temperature is 35 ℃ and the time is 90min, and performing ultrasonic dispersion to obtain a composite phase change material with uniform adsorption;
s4, coating and shaping of the composite phase change material: placing the composite phase-change material prepared in the step S4 in a beaker, dropwise adding a proper amount of prepared composite coating agent, ultrasonically dispersing, filtering the uniformly mixed material, and placing the material in a baking oven for drying to obtain a composite shape-stabilized phase-change material;
s5, modification of the composite shape-stabilized phase change material: preparing an ethyl cellulose solution, spraying the prepared ethyl cellulose solution on the surface of the composite shape-stabilized phase-change material prepared in the step S4, and then carrying out heat treatment at a certain temperature to obtain a coated and modified composite shape-stabilized phase-change material;
s6, modifying the grafted polyester fabric of the composite shape-stabilized phase change material: adding the coated and modified composite shape-stabilized phase change material prepared in the step S5 into a chitosan solution, adding the pretreated polyester fabric into the chitosan solution with the concentration of 1g/L for dipping for 60min, and repeating the steps for multiple times to obtain the temperature-sensitive fabric;
the preparation method of the hollow chitosan microspheres in the step S1 comprises the following steps:
s1, taking SiO2Dispersing in water to form a dispersion with a concentration of 10g/L, stirring with SiO2Slowly dripping the dispersion into a chitosan solution with the concentration of 10g/L, and continuously stirring after the dispersion is added to obtain the product in SiO2The surface is assembled with the microsphere with the chitosan layer;
s2, taking SiO2Adding the microspheres with the chitosan layer assembled on the surface into HF solution with the concentration of 1 wt%, standing, and removing SiO2To prepare hollow chitosan microspheres;
s3, adding the hollow chitosan microspheres into 0.5mol/L sodium carbonate solution for soaking for 60min, washing, filtering and freeze-drying at the temperature of-20 ℃ to obtain the hollow chitosan microspheres with etched surfaces.
Example 2
A preparation method of a temperature-sensitive fabric comprises the following steps:
s1, preparation of an adsorbing material: preparing hollow chitosan microspheres;
s2, preparing the phase-change material, namely mixing paraffin and 1-dodecanol according to a mass ratio of 3: 5 stirring and mixing evenly in water bath to obtain binary phase change blend,
s3, preparing the composite phase-change material: adding the binary phase change blend prepared in the step S2 into a container containing chitosan adsorption material, heating and drying, wherein the drying temperature is 32 ℃ and the time is 140min, and performing ultrasonic dispersion to obtain a composite phase change material with uniform adsorption;
s4, coating and shaping of the composite phase change material: placing the composite phase-change material prepared in the step S4 in a beaker, dropwise adding a proper amount of prepared composite coating agent, ultrasonically dispersing, filtering the uniformly mixed material, and placing the material in a baking oven for drying to obtain a composite shape-stabilized phase-change material;
s5, modification of the composite shape-stabilized phase change material: preparing an ethyl cellulose solution, spraying the prepared ethyl cellulose solution on the surface of the composite shape-stabilized phase-change material prepared in the step S4, and then carrying out heat treatment at a certain temperature to obtain a coated and modified composite shape-stabilized phase-change material;
s6, modifying the grafted polyester fabric of the composite shape-stabilized phase change material: adding the coated and modified composite shape-stabilized phase change material prepared in the step S5 into a chitosan solution, adding the pretreated polyester fabric into the chitosan solution with the concentration of 2g/L for dipping for 20min, and repeating the steps for multiple times to obtain a temperature-sensitive fabric;
the preparation method of the hollow chitosan microspheres in the step S1 comprises the following steps:
s1, taking SiO2Dispersing in water to form a dispersion with a concentration of 20g/L, stirring with SiO2Slowly dripping the dispersion into a chitosan solution with the concentration of 20g/L, and continuously stirring after the dispersion is added to obtain the SiO2The surface is assembled with the microsphere with the chitosan layer;
s2, taking SiO2Adding the microspheres with the chitosan layer assembled on the surface into HF solution with the concentration of 3 wt%, standing, and removing SiO2To prepare hollow chitosan microspheres;
s3, adding the hollow chitosan microspheres into 1.2mol/L sodium carbonate solution for soaking for 120min, washing, filtering and freeze-drying at the temperature of-50 ℃ to obtain the hollow chitosan microspheres with etched surfaces.
Example 3
A preparation method of a temperature-sensitive fabric comprises the following steps:
s1, preparation of an adsorbing material: preparing hollow chitosan microspheres;
s2, preparing the phase-change material, namely mixing paraffin and 1-dodecanol according to a mass ratio of 3: 4.4 stirring and mixing evenly in water bath to obtain binary phase change blend,
s3, preparing the composite phase-change material: adding the binary phase change blend prepared in the step S2 into a container containing chitosan adsorption material, heating and drying, wherein the drying temperature is 40 ℃, the drying time is 100min, and performing ultrasonic dispersion to obtain a composite phase change material with uniform adsorption;
s4, coating and shaping of the composite phase change material: placing the composite phase-change material prepared in the step S4 in a beaker, dropwise adding a proper amount of prepared composite coating agent, ultrasonically dispersing, filtering the uniformly mixed material, and placing the material in a baking oven for drying to obtain a composite shape-stabilized phase-change material;
s5, modification of the composite shape-stabilized phase change material: preparing an ethyl cellulose solution, spraying the prepared ethyl cellulose solution on the surface of the composite shape-stabilized phase-change material prepared in the step S4, and then carrying out heat treatment at a certain temperature to obtain a coated and modified composite shape-stabilized phase-change material;
s6, modifying the grafted polyester fabric of the composite shape-stabilized phase change material: adding the coated and modified composite shape-stabilized phase change material prepared in the step S5 into a chitosan solution, adding the pretreated polyester fabric into the chitosan solution with the concentration of 1.2g/L for dipping for 40min, and repeating the steps for multiple times to prepare the temperature-sensitive fabric;
the preparation method of the hollow chitosan microspheres in the step S1 comprises the following steps:
s1, taking SiO2Dispersing in water to form a dispersion with a concentration of 12g/L, stirring with SiO2Slowly dripping the dispersion into a chitosan solution with the concentration of 15g/L, and continuously stirring after the dispersion is addedStirring to obtain SiO2The surface is assembled with the microsphere with the chitosan layer;
s2, taking SiO2Adding the microspheres with the chitosan layer assembled on the surface into HF solution with the concentration of 2 wt%, standing, and removing SiO2To prepare hollow chitosan microspheres;
s3, adding the hollow chitosan microspheres into 0.8mol/L sodium carbonate solution for soaking for 80min, washing, filtering and freeze-drying at the temperature of-40 ℃ to obtain the hollow chitosan microspheres with etched surfaces.
Example 4
A preparation method of a temperature-sensitive fabric comprises the following steps:
s1, preparation of an adsorbing material: preparing hollow chitosan microspheres;
s2, preparing the phase-change material, namely mixing paraffin and 1-dodecanol according to a mass ratio of 3: 4.7 stirring and mixing evenly in water bath to obtain binary phase change blend,
s3, preparing the composite phase-change material: adding the binary phase change blend prepared in the step S2 into a container containing chitosan adsorption material, heating and drying, wherein the drying temperature is 35 ℃ and the time is 120min, and performing ultrasonic dispersion to obtain a composite phase change material with uniform adsorption;
s4, coating and shaping of the composite phase change material: placing the composite phase-change material prepared in the step S4 in a beaker, dropwise adding a proper amount of prepared composite coating agent, ultrasonically dispersing, filtering the uniformly mixed material, and placing the material in a baking oven for drying to obtain a composite shape-stabilized phase-change material;
s5, modification of the composite shape-stabilized phase change material: preparing an ethyl cellulose solution, spraying the prepared ethyl cellulose solution on the surface of the composite shape-stabilized phase-change material prepared in the step S4, and then carrying out heat treatment at a certain temperature to obtain a coated and modified composite shape-stabilized phase-change material;
s6, modifying the grafted polyester fabric of the composite shape-stabilized phase change material: adding the coated and modified composite shape-stabilized phase change material prepared in the step S5 into a chitosan solution, adding the pretreated polyester fabric into the chitosan solution with the concentration of 1.6g/L for soaking for 30min, and repeating the steps for multiple times to prepare the temperature-sensitive fabric;
the preparation method of the hollow chitosan microspheres in the step S1 comprises the following steps:
s1, taking SiO2Dispersing in water to form 16g/L dispersion, and stirring to obtain SiO2Slowly dripping the dispersion into 18g/L chitosan solution, and continuing stirring after the addition is finished to obtain the product in SiO2The surface is assembled with the microsphere with the chitosan layer;
s2, taking SiO2Adding the microspheres with the chitosan layer assembled on the surface into HF solution with the concentration of 2 wt%, standing, and removing SiO2To prepare hollow chitosan microspheres;
s3, adding the hollow chitosan microspheres into 1mol/L sodium carbonate solution for soaking for 100min, washing, filtering and freeze-drying at the temperature of-20 ℃ to obtain the hollow chitosan microspheres with etched surfaces.
Phase transition temperature (. degree. C.)
Enthalpy of phase change (J.g)-1)
Example 1
34.8
168.9
Example 2
35.7
170.6
Example 3
36.0
170.8
Example 4
36.3
171.5
The hand feeling evaluation of the temperature-sensitive fabric is carried out through hand feeling evaluation finishing (hand feeling evaluation: the hand feeling of the treated polyester staple fibers is directly evaluated manually; the hand feeling evaluation is divided into 5 grades, 1 is the worst, 5 is the best, and the rest is done in sequence)
Smoothness of the surface
Flexibility
Rebound resilience
Example 1
4
5
4
Example 2
4
5
5
Example 3
4
4
5
Example 4
5
4
5
Blank group
4
5
5
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