CN115075000A - Silk fabric continuous natural cool printing finishing method - Google Patents
Silk fabric continuous natural cool printing finishing method Download PDFInfo
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- CN115075000A CN115075000A CN202210877076.7A CN202210877076A CN115075000A CN 115075000 A CN115075000 A CN 115075000A CN 202210877076 A CN202210877076 A CN 202210877076A CN 115075000 A CN115075000 A CN 115075000A
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- NFLGAXVYCFJBMK-IUCAKERBSA-N (-)-isomenthone Chemical compound CC(C)[C@@H]1CC[C@H](C)CC1=O NFLGAXVYCFJBMK-IUCAKERBSA-N 0.000 description 1
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Images
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/144—Alcohols; Metal alcoholates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/10—Animal fibres
- D06M2101/12—Keratin fibres or silk
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention discloses a method for printing and finishing a silk fabric with a continuous natural cool feeling, which is implemented according to the following steps: the fresh leaves of the mint leaves are boiled with water for decontamination, naturally spread and dried → freeze drying → steam flash explosion treatment → pulping → filtration → menthol nanocrystal preparation → menthol nanocrystal ultrafine dispersion slurry → menthol nanocrystal printing slurry → menthol nanocrystal cool fabric. The fabric after cool finishing has excellent cool performance, and the finished fabric still keeps the cool value of more than 0.15 after being washed for 20 times, meets the performance requirements of cool fabrics, and has naturalness.
Description
Technical Field
The invention relates to the technical field of fabric finishing, in particular to a method for printing and finishing a natural cool feeling of a real silk fabric.
Background
In recent years, the development and research of fabric cool feeling function can cause hot tide in the textile and clothing industry, and textile and clothing products made of the fabric with the cool feeling function can not only provide cool and cool feeling and comfortable life quality for people, but also respond to the theme of ecological environmental protection. The cool functional fabric generally adopts a unique mode, for example, the fiber raw material is modified or the fabric weave structure of the fabric is designed and post-finished, so that the fabric has the functions of quickly diffusing body heat, accelerating perspiration and cooling, and keeping cool and comfortable of the fabric for a long time. The functional application of the cool fiber is particularly obvious in products such as underwear, shirts, bedding, clothing fabrics and the like. In summer with intense heat and difficult tolerance, cool textile clothing products made of cool functional fabrics are more and more popular with people, and the cool comfort brought by contact becomes an important reference index for consumers to select products.
At present, the domestic research on the cool functional fabric is mainly to endow the fabric with the cool function through the following modes:
(1) the fabric fiber raw material is modified, the fabric weave structure is designed, and the fabric production process is improved. On the development of cool fiber fabrics, Shanghai Deforman Limited company in China utilizes extraction and nano technology, preferably natural mineral materials such as jade powder, shell powder, mica powder and the like are processed into nano-scale particles, and then the nano-scale particles are spun with hydrophilic slices, so that the fibers have a capillary effect through the design of fiber sections, the instant cool feeling is realized, the cool feeling duration is prolonged, the array cool feeling is increased in hot summer, and more people can feel cool and beautiful comfort.
(2) The fabric is endowed with cool feeling performance through a subsequent cool feeling finishing method for fabric fibers. Chinese patent application No. 202011225628.3 discloses a method for preparing cool feeling enhancing fabric, which comprises the steps of firstly carrying out dipping finish on synthetic fiber knitted fabric by using a moisture absorption and sweat discharge composite finishing agent blended by a moisture absorption and sweat discharge agent and high heat conduction short fibers to prepare moisture absorption and quick drying fabric; and carrying out single-side silk-screen printing finishing on the moisture-absorbing quick-drying fabric by using mixed mucilage of the cool microcapsules and the phase-change microcapsules to obtain the fabric with enhanced cool feeling. The prepared cool feeling enhancing fabric can achieve the effect of remarkably enhancing the cool feeling by endowing the fabric with functions of instant cool feeling, continuous cool feeling, moisture absorption, quick drying and the like, brings comfortable experience to a human body, and can be used for sports wear, protective clothing, home textiles and the like.
The cool fabric is poor in air permeability, poor in wearing comfort, high in cost and natural and environment-friendly.
The mint leaf is the leaf of plant mint, has cool taste, has mint called as tomato leaf, red sage, rose and lotus, mainly contains peppermint oil, menthol, menthone, isomenthone, rosmarinic acid and other components, and has the following effects. (1) Clearing summer heat: the mint leaves have very ideal effects of clearing away summer-heat, can be made into mint water or mint porridge for oral administration in hot summer, can help a human body to dissipate heat, and is a good medicine for cooling and relieving summer-heat. (2) Refreshing: the mint leaves contain some special substances, such as: menthol, isomenthol, rosmarinic acid, etc., which can help to excite the brain and promote the body's blood circulation. (3) Anti-inflammatory and antibacterial: the mint leaves have desensitizing, anti-inflammatory and antibacterial effects on skin bitten by mosquitoes. The silk fabric is light and thin, comfortable and breathable, the skin affinity of the silk fabric is incomparable with that of other fabrics, and the mint leaf fabric combines the advantages of the mint leaves. Through elaborate material design combination, multiple indexes for measuring finished products, such as hand feeling effect, skin touch feeling, material combination cost performance and the like, of the fabric are optimized and combined, and the fabric is one of novel functional fabrics.
Disclosure of Invention
The invention aims to provide a method for printing and finishing a silk fabric with a lasting natural cool feeling, which aims to solve the problems that the spinning process of cool-feeling fibers is complex, the energy consumption is high and the performance of the fabric after cool-feeling finishing is not superior in the prior art. .
The technical scheme adopted by the invention for solving the technical problems is as follows:
a silk fabric continuous natural cool printing finishing method comprises the following steps:
(1) scalding fresh folium Menthae with water to remove dirt, naturally spreading and air drying;
(2) and (3) freeze drying: drying the mint leaves treated in the step (1) by using a freeze dryer until the water content is below 5%;
(3) steam flash explosion treatment: directly adding freeze-dried mint leaves into a cavity of a preheated steam explosion operating platform, carrying out steam explosion treatment, opening a collecting bin to collect the steam explosion mint leaves, and storing at 4-10 ℃ for later use;
(4) pulping: putting the mint leaves subjected to steam flash explosion treatment and an ethanol solution into a pulping machine to prepare slurry;
(5) and (3) filtering: filtering the slurry obtained in the step (4) through a micron-sized filter screen, and removing plant tissue residues to obtain menthol nano-slurry;
(6) preparing menthol nanocrystal: pouring the menthol nano-slurry prepared in the step (5) into a grinding pulverizer to be pulverized, and grinding and preparing 200-mesh and 250-mesh menthol nano-crystals under the condition of no condensed water;
(7) weighing 20-40 parts of menthol nanocrystal, 5-8 parts of dispersing agent, 1-2 parts of defoaming agent and 60-80 parts of water according to the parts by weight, stirring for 1-2h at 3000-3500r/min, and filtering with gauze to obtain menthol nanocrystal superfine dispersion slurry;
(8) weighing 30-40% of menthol nanocrystal ultrafine dispersion slurry, 5-10% of thickening agent, 5-10% of adhesive and the balance of water according to the mass percentage, mixing, uniformly stirring, and preparing to obtain menthol nanocrystal printing slurry;
(9) printing the silk fabric by the prepared menthol nanocrystalline printing paste in a screen printing mode, then drying in a dryer at 60-80 ℃ for 10-20min, soaping, washing and drying to obtain the menthol nanocrystalline cool fabric.
The invention combines the advantages of mint leaves with silk fabric, directly converts the mint leaves into mint leaf dispersion liquid through grinding and ultrasonic dispersion by adding proper antifoaming agent, dispersant and assistant capable of adsorbing and bonding the mint leaves, and then finishes the mint leaf dispersion liquid on the fabric together with the silk fabric in a finishing mode, thereby obtaining the novel cool silk fabric, endowing the fabric with cool performance and simultaneously endowing the fabric with natural fragrance. Through elaborate material design combination, multiple indexes for measuring finished products, such as hand feeling effect, skin touch feeling, material combination cost performance and the like, of the fabric are optimized and combined, and the fabric is one of novel functional fabrics.
Preferably, in step (1), the hot water decontamination is: decocting with 90-100 deg.C water for 3-5 min.
Preferably, in the step (1), the steam flash explosion treatment parameters are as follows: treating at 1.3MPa for 30-40s, and then instantly releasing pressure within 0.1 s.
Preferably, in the step (4), the mass ratio of ethanol to water in the ethanol solution is 3:1-5:1, and the mass ratio of the mint leaves to the ethanol solution is 1:20-1: 12.
Preferably, in the step (4), the beating time is 20-30min, and the rotation speed is 1000-.
Preferably, in the step (7), the dispersant is one or more of dispersant MF, lignin 85A and dispersant NNO.
Preferably, in the step (7), the defoaming agent is one or two of A-901 and A-1205.
Preferably, in the step (8), the thickening agent is one or two of PTF-828 and EM-610.
Preferably, in the step (8), the adhesive is one or two of low-temperature adhesives HB-6020 and BE-4200.
The invention has the beneficial effects that:
the mint leaves used by the continuous cool finishing method for the real silk fabric have wide sources, are natural and pollution-free, and cannot pollute the environment, and meanwhile, the mint leaves not only have cool feeling performance, but also have the effects of clearing away summer heat, refreshing, diminishing inflammation and resisting bacteria.
The mint leaves are subjected to freeze drying before being crushed, so that the stability of effective components in the mint leaves can be kept, and the moisture in the mint leaves can be efficiently removed. The toughness of the freeze-dried mint leaves is reduced, so that the mint leaves are beneficial to the subsequent flash explosion and grinding treatment, and the mint leaves have smaller particle size and higher stability.
The steam flash explosion technology used in the process of preparing the menthol nanocrystal ultrafine dispersion slurry has the advantages of low energy consumption, low cost, zero pollution and the like, and is widely applied to processing of biomass. The principle is that saturated steam is pressed into material intercellular spaces and the insides of cells under high pressure, then the materials filled with the steam need to be subjected to short-time pressure maintaining similar to cooking heat treatment in a pressure-resistant container, and then pressure is released instantly, so that high-density steam in the cells applies work to the outside through rapid expansion, and accordingly the mint leaf structure is damaged and the internal tissues are dissociated under the action of mechanical shearing force of shock waves. The steam flash explosion treatment has the advantages of low energy consumption, low cost, zero pollution and the like.
The solvent used in the pulping process of the mint leaves prepared by the method is ethanol water solution, and menthol is very soluble in ethanol, so that on one hand, the method is favorable for extracting cool components in the mint leaves, on the other hand, the ethanol solvent is also easy to volatilize, the subsequent preparation of menthol nano microcrystal is favorable, the temperature required by the conventional method for volatilizing water as the solvent is reduced, and the defect that the menthol is volatilized and decomposed at high temperature is avoided as far as possible when the ethanol solvent is volatilized at room temperature.
According to the invention, the sanding technology without condensed water is adopted, so that the menthol solution can rapidly increase the ethanol and reduce the ethanol content along with the increase of the temperature in the grinding process, and the menthol has lower solubility in water, so that the original whisker of the menthol is changed into nano microcrystal under the grinding action, the particle size is reduced, the deposition of the microcrystal on the surface of the fabric is facilitated, and the washability of the microcrystal on the fabric is improved.
The menthol nanocrystalline superfine dispersion pulp prepared by the invention is printed on the surface of a textile, can play a cooling and refreshing role on the product, and can bring a cool feeling to people in summer with inflammation. The fabric after cool finishing has excellent cool performance, and the finished fabric can still keep the cool value above 0.15 after being washed for 20 times, thereby meeting the performance requirements of cool fabrics and having naturalness.
The continuous cool finishing method for the fabric, which is adopted by the invention, has the advantages of simple operation, low cost and good finishing effect, and has great advantages in cost and performance compared with other cool fabric preparations.
Drawings
Figure 1 is a menthol nanocrystal ultra-fine dispersion slurry.
Detailed Description
The technical solution of the present invention will be further specifically described below by way of specific examples.
In the present invention, the raw materials and equipment used are commercially available or commonly used in the art, unless otherwise specified. The methods in the following examples are conventional in the art unless otherwise specified.
Dispersant MF, lignin 85A were obtained from the Phinono dye chemical industry (tin-free) Inc., and dispersant NNO was obtained from Shandong Yousol chemical technology, Inc.
A-901 and A-1205 are purchased from Shenzhen Dayang New materials Limited.
PTF-828 is available from Zoneng trade, Inc. of Guangzhou, and EM-610 is available from Yimei, Buddha.
HB-6020 was purchased from Saibobo trade, Inc. in Guangzhou and BE-4200 was purchased from Bonn chemical Co., Ltd.
The mint leaves are fresh mint leaves which are exuberant in summer and bloom for 2 rounds, withered and rotten leaves are cut off during picking, and the mint leaves are cleaned by pure water after picking. The model of the steam flash explosion machine is QBS-200B (genuine biological energy Co., Ltd., Henan He-wall city), the model of the beating machine is 1-10T (Longwan Wanyuan food machinery plant, Wenzhou city), and the grinding and crushing machine is a Changzhou mint leaf crushing machine.
Example 1:
grinding and preparing the menthol nanocrystal ultrafine dispersion slurry: scalding fresh folium Menthae with water to remove dirt, decocting with 90 deg.C water for 3min, and naturally spreading and air drying; drying the cleaned mint leaves by using a freeze dryer until the water content is below 5 percent, and taking out the mint leaves; directly adding the dried mint leaves into a cavity of a preheated steam explosion operating platform, processing for 30s at 1.3MPa, then instantly releasing pressure within 0.1s, opening a collecting bin to collect the steam explosion mint leaves, and storing at 4 ℃ for later use; putting the mint leaves subjected to steam flash explosion treatment into a pulping machine to prepare slurry, wherein the mass ratio of ethanol to water in the slurry is 3:1, and the mass ratio of the mint leaves to an ethanol solution is 1: 20; dispersing mint leaf tissue through steam flash explosion treatment, extracting menthol from the mint leaves by utilizing the dissolving action of ethanol, filtering mint leaf slurry through a micron-sized filter screen, and removing plant tissue residues; pouring the prepared menthol nano-slurry into a grinding pulverizer to be ground under the condition of no condensed water, and grinding to prepare 200-mesh menthol nanocrystalline; the menthol solution is rapidly increased in hair with the increase of the temperature in the grinding process, the content of the ethanol is reduced, and the original whisker of the menthol is changed into nano-microcrystal under the grinding action due to the lower solubility of the menthol in water; weighing 20g of menthol nanocrystal, 2.5g of lignin 85A, 2.5g of dispersing agent MF, 1g A-901 and 60g of water according to the mass parts, pouring the mixture into a grinding cup, stirring the mixture for 1 hour at 3000r/min, and filtering the mixture by gauze to obtain the menthol nanocrystal superfine dispersion slurry.
The cool finishing process of the real silk fabric comprises the following steps: weighing 3g of menthol nanocrystal ultrafine dispersion slurry, 3g of PTF-8280.5g of HB-60200.5 g of water and 6g of water in a 50ml beaker, mixing and uniformly stirring to prepare menthol nanocrystal printing slurry, printing the prepared menthol nanocrystal printing slurry on a fabric in a silk screen mode, drying the fabric in a drying oven at 60 ℃ for 10min, soaping, washing with water and drying to prepare a cool fabric, and testing the heat flow peak value Q-max and the washing resistance times of the cool fabric.
Heat flow peak value Q-max (cooling sensation value) test method: the method comprises the steps of adopting a Japanese KES-F7 contact cold and warm feeling tester, placing the processed cold feeling fabric on a cold plate according to an industrial standard (FTTS-FA-019), quickly placing the hot plate on the cold feeling fabric (close to the side of the cold plate) when the temperature of the hot plate reaches a set temperature (generally 35 ℃), recording the value on a display screen, namely the Q-max value, and measuring for 5 times to obtain an average value. The larger the value of Q-max, the more heat is removed.
The method for testing the washing times comprises the following steps: and (5) washing the treated cool fabric for multiple times to measure Q-max until the Q-max is close to 0.110, and recording the washing times.
Example 2:
grinding and preparing the menthol nanocrystal ultrafine dispersion slurry: scalding fresh folium Menthae with water to remove dirt, decocting with 100 deg.C water for 5min, and naturally spreading and air drying; drying the cleaned mint leaves by using a freeze dryer until the water content is below 5 percent, and taking out the mint leaves; performing steam flash explosion treatment, namely directly adding the dried mint leaves into a cavity of a preheated steam explosion operating platform, treating for 40s at 1.3MPa, then instantly releasing pressure within 0.1s, opening a collecting bin to collect the steam exploded mint leaves, and storing at 10 ℃ for later use; putting the mint leaves subjected to steam flash explosion treatment into a pulping machine to prepare slurry, wherein the mass ratio of ethanol to water in the slurry is 4:1, and the mass ratio of the mint leaves to an ethanol solution is 1: 12; dispersing mint leaf tissue through steam flash explosion treatment, extracting menthol from the mint leaves by utilizing the dissolving action of ethanol, filtering mint leaf slurry through a micron-sized filter screen, and removing plant tissue residues; pouring the prepared menthol nano-slurry into a grinding pulverizer to be ground under the condition of no condensed water to prepare 250-mesh menthol nanocrystalline; the menthol solution is rapidly increased in hair with the increase of the temperature in the grinding process, the content of the ethanol is reduced, and the original whisker of the menthol is changed into the nano-microcrystal under the grinding action due to the lower solubility of the menthol in water. Weighing 40g of menthol nanocrystal, 4g of lignin 85A, 4g of dispersing agent MF, 2g A-901 and 80g of water, pouring into a grinding cup, stirring for 2h at 3500r/min, and filtering with gauze to obtain the menthol nanocrystal superfine dispersion slurry.
The cool finishing process of the real silk fabric comprises the following steps: weighing 4g of menthol nanocrystal ultrafine dispersion slurry, 4g of EM-6101 g of BE-42001 g and 4g of water in a 50ml beaker, mixing and uniformly stirring to prepare menthol nanocrystal printing slurry, printing the prepared menthol nanocrystal printing slurry on a fabric in a silk screen mode, drying the fabric in an oven at 80 ℃ for 20min, soaping, washing with water and drying to prepare a cool fabric, and testing the heat flow peak value Q-max and the washing resistance times of the fabric, wherein the testing steps are the same as those in example 1.
Example 3:
grinding and preparing the menthol nanocrystal ultrafine dispersion slurry: scalding fresh folium Menthae with water to remove dirt, decocting with 95 deg.C water for 4min, and naturally spreading and air drying; drying the cleaned mint leaves by using a freeze dryer until the water content is below 5 percent, and taking out the mint leaves; directly adding the dried mint leaves into a cavity of a preheated steam explosion operating platform, processing for 35s at 1.3MPa, then instantly releasing pressure within 0.1s, opening a collecting bin to collect the steam explosion mint leaves, and storing at 6 ℃ for later use; putting the mint leaves subjected to steam flash explosion treatment into a pulping machine to prepare slurry, wherein the mass ratio of ethanol to water in the slurry is 5:1, and the mass ratio of the mint leaves to an ethanol solution is 1: 15; dispersing mint leaf tissue through steam flash explosion treatment, extracting menthol from the mint leaves by utilizing the dissolving action of ethanol, filtering mint leaf slurry through a micron-sized filter screen, and removing plant tissue residues; pouring the prepared menthol nano-slurry into a grinding pulverizer to grind and prepare 225-mesh menthol nanocrystalline under the condition of no condensed water; the menthol solution is rapidly increased in hair with the increase of the temperature in the grinding process, the content of the ethanol is reduced, and the original whisker of the menthol is changed into nano-microcrystal under the grinding action due to the lower solubility of the menthol in water; 30g of menthol nanocrystal, 3g of dispersant NNO, 3g of dispersant MF, 1.5g A-901 and 70g of water are weighed according to the mass parts, poured into a grinding cup, stirred for 1.5h at 3300r/min and filtered by gauze to obtain the menthol nanocrystal superfine dispersion slurry.
The cool finishing process of the real silk fabric comprises the following steps: weighing 3.5g of menthol nanocrystal ultrafine dispersion slurry, 3.5g of PTF-8280.8g of HB-60200.8 g of water and 4.9g of water in a 50ml beaker, mixing, uniformly stirring, preparing to obtain menthol nanocrystal printing slurry, printing the prepared menthol nanocrystal printing slurry on a fabric in a silk screen mode, drying the fabric in an oven at 70 ℃ for 15min, soaping, washing with water and drying to obtain a cool fabric, and testing the heat flow peak value Q-max and the washing resistance times of the cool fabric, wherein the testing steps are the same as example 1.
Example 4:
grinding and preparing the menthol nanocrystal ultrafine dispersion slurry: scalding fresh folium Menthae with water to remove dirt, decocting with 96 deg.C water for 5min, and naturally spreading and air drying; drying the cleaned mint leaves by using a freeze dryer until the water content is below 5 percent, and taking out the mint leaves; directly adding the dried mint leaves into a cavity of a preheated steam explosion operating platform, processing for 35s at 1.3MPa, then instantly releasing pressure within 0.1s, opening a collecting bin to collect the steam explosion mint leaves, and storing at 6 ℃ for later use; putting the mint leaves subjected to steam flash explosion treatment into a pulping machine to prepare slurry, wherein the mass ratio of ethanol to water in the slurry is 3:1, and the mass ratio of the mint leaves to an ethanol solution is 1: 12; the mint leaf tissue is broken up through steam flash explosion treatment, menthol in the mint leaves is extracted out by utilizing the dissolving action of ethanol, and mint leaf pulp is filtered through a micron-sized filter screen to remove plant tissue residues; pouring the prepared menthol nano-slurry into a grinding pulverizer to grind and prepare 225-mesh menthol nanocrystalline under the condition of no condensed water; the menthol solution is rapidly increased in hair with the increase of the temperature in the grinding process, the content of the ethanol is reduced, and the original whisker of the menthol is changed into nano-microcrystal under the grinding action due to the lower solubility of the menthol in water; weighing 25g of menthol nanocrystal, 2.5g of dispersant NNO, 2.5g of dispersant MF, 2g A-1205 and 75g of water according to the mass parts, pouring the mixture into a grinding cup, stirring the mixture for 2 hours at 3200r/min, and filtering the mixture by gauze to obtain the menthol nanocrystal superfine dispersion slurry.
The cool finishing process of the real silk fabric comprises the following steps: weighing 3.6g of menthol nanocrystal ultrafine dispersion slurry, 3.6g of EM-6100.9g of BE-42000.8 g and 4.7g of water in a 50ml beaker, mixing, uniformly stirring, preparing to obtain menthol nanocrystal printing slurry, printing the prepared menthol nanocrystal printing slurry on a fabric in a silk screen mode, drying the fabric in an oven at 65 ℃ for 13min, soaping, washing with water, drying to obtain a cool fabric, and testing the heat flow peak value Q-max and the washing resistance times of the cool fabric, wherein the testing steps are the same as those in example 1.
Example 5:
grinding and preparing menthol nanocrystal ultrafine dispersion slurry: scalding fresh folium Menthae with water to remove dirt, decocting with 90 deg.C water for 5min, and naturally spreading and air drying; drying the cleaned mint leaves by using a freeze dryer until the water content is below 5 percent, and taking out the mint leaves; directly adding the dried mint leaves into a cavity of a preheated steam explosion operating platform, processing for 35s at 1.3MPa, then instantly releasing pressure within 0.1s, opening a collecting bin to collect the steam explosion mint leaves, and storing at 10 ℃ for later use; putting the mint leaves subjected to steam flash explosion treatment into a pulping machine to prepare slurry, wherein the mass ratio of ethanol to water in the slurry is 5:1, and the mass ratio of the mint leaves to an ethanol solution is 1: 20; dispersing mint leaf tissue through steam flash explosion treatment, extracting menthol from the mint leaves by utilizing the dissolving action of ethanol, filtering mint leaf slurry through a micron-sized filter screen, and removing plant tissue residues; pouring the prepared menthol nano-slurry into a grinding pulverizer to be ground under the condition of no condensed water to prepare 250-mesh menthol nanocrystalline; the menthol solution is rapidly increased in hair with the increase of the temperature in the grinding process, the content of the ethanol is reduced, and the original whisker of the menthol is changed into nano-microcrystal under the grinding action due to the lower solubility of the menthol in water; weighing 35g of menthol nanocrystal, 4g of lignin 85A, 4g of dispersing agent MF, 2g A-901 and 78g of water according to the mass parts, pouring the mixture into a grinding cup, stirring the mixture for 1 hour at 3000r/min, and filtering the mixture by gauze to obtain the menthol nanocrystal superfine dispersion slurry.
The cool finishing process of the real silk fabric comprises the following steps: 3.5g of menthol nanocrystal ultrafine dispersion slurry, PTF-8280.7g, HB-60200.6 g and 5.2g of water are weighed in a 50ml beaker, uniformly stirred and prepared to obtain menthol nanocrystal printing slurry, the prepared menthol nanocrystal printing slurry is used for printing a fabric in a silk screen mode, the fabric is placed in an oven to be dried for 16min at 60 ℃, soaped, washed and dried to obtain a cool fabric, and the cool fabric is subjected to heat flow peak value Q-max and water washing resistance times tests, wherein the test steps are the same as those in example 1.
Comparative example 1:
PTF-8280.7g, HB-60200.6 g and 8.7g of water are weighed in a 50ml beaker, evenly stirred to prepare printing and pulping liquor, the prepared printing and pulping liquor is used for printing fabrics in a silk screen mode, the fabrics are placed in an oven to be dried for 16min at 60 ℃, soaped, washed and dried to prepare fabrics, and the fabrics are tested for the heat flow peak value Q-max and the washing resistant times, wherein the testing steps are the same as those of example 1.
Comparative example 2:
grinding and preparing the menthol nanocrystal ultrafine dispersion slurry: scalding fresh folium Menthae with water to remove dirt, decocting with 90 deg.C water for 5min, and naturally spreading and air drying; drying the cleaned mint leaves by using a freeze dryer until the water content is below 5 percent, and taking out the mint leaves; directly adding the dried mint leaves into a cavity of a preheated steam explosion operating platform, processing for 35s at 1.3MPa, then instantly releasing pressure within 0.1s, opening a collecting bin to collect the steam explosion mint leaves, and storing at 10 ℃ for later use; putting the mint leaves subjected to steam flash explosion treatment into a pulping machine to prepare slurry, wherein the slurry takes water as a medium, and the mass ratio of the mint leaves to the water is 1: 20; scattering the tissue of the mint leaves through steam flash explosion treatment, pouring the prepared menthol nano slurry into a grinding crusher to be crushed and ground under the condition of no condensed water to prepare 250-mesh menthol nanocrystalline; the menthol solution is rapidly increased in hair with the increase of the temperature in the grinding process, the content of the ethanol is reduced, and the original whisker of the menthol is changed into nano-microcrystal under the grinding action due to the lower solubility of the menthol in water; weighing 35g of menthol nanocrystal, 4g of lignin 85A, 4g of dispersing agent MF, 2g A-901 and 78g of water according to the mass parts, pouring the mixture into a grinding cup, stirring the mixture for 1 hour at 3000r/min, and filtering the mixture by gauze to obtain the menthol nanocrystal superfine dispersion slurry.
The cool finishing process of the real silk fabric comprises the following steps: 3.5g of menthol nanocrystal ultrafine dispersion slurry, 3.5g of PTF-8280.7g of HB-60200.6 g of water and 5.2g of water are weighed in a 50ml beaker, uniformly stirred and prepared to obtain menthol nanocrystal printing slurry, the prepared menthol nanocrystal printing slurry is used for printing a fabric in a silk screen mode, the fabric is placed in an oven to be dried for 16min at 60 ℃, soaped, washed and dried to obtain a cool fabric, and the cool fabric is subjected to heat flow peak value Q-max and water washing resistance times tests, wherein the test steps are the same as example 1.
The ultra-fine dispersion slurry of menthol nanocrystals prepared according to example 1 was uniformly dispersed to have a light green color (fig. 1) and an average particle size of 1.42 μm.
Table 1: comparative examples 1-6 and comparative example 1 Cool feeling finish Process and comparison of the Effect without finish
Test object | Cooling value W/cm 2 | Cooling feeling value (W/cm) after washing for 20 times 2 ) |
Example 1 | 0.169 | 0.157 |
Example 2 | 0.171 | 0.159 |
Example 3 | 0.175 | 0.155 |
Example 4 | 0.168 | 0.156 |
Example 5 | 0.172 | 0.155 |
Comparative example 1 | 0.112 | 0.105 |
Comparative example 2 | 0.142 | 0.122 |
。
As can be seen from examples 1 to 5 and comparative example 1, the cool feeling performance of the fabric after the cool feeling finishing is better than that of the untreated fabric, and reaches 0.17W/cm 2 Left and right' and the cool value of the finished fabric is still kept at 0.15W/cm after the fabric is washed for 20 times 2 The performance reduction of the cool feeling performance of the finished real silk fabric after multiple washing is small, and the cool feeling fabric is satisfiedThe performance requirements of (a). From example 5 and comparative example 2 it can be seen that the pulp prepared from the steam flash exploded mint leaves in the beater, the ethanol pulp plays a very important role in the formation of menthol crystallites and finally in the formation of cool-feeling fabrics.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (9)
1. A silk fabric continuous natural cool printing finishing method is characterized by comprising the following steps:
(1) scalding fresh folium Menthae with water, removing dirt, and naturally spreading and air drying;
(2) and (3) freeze drying: drying the mint leaves treated in the step (1) by using a freeze dryer until the water content is below 5%;
(3) steam flash explosion treatment: directly adding freeze-dried mint leaves into a cavity of a preheated steam explosion operating platform, carrying out steam explosion treatment, opening a collecting bin to collect the steam explosion mint leaves, and storing at 4-10 ℃ for later use;
(4) pulping: putting the mint leaves subjected to steam flash explosion treatment and an ethanol solution into a pulping machine to prepare slurry;
(5) and (3) filtering: filtering the slurry obtained in the step (4) through a micron-sized filter screen, and removing plant tissue residues to obtain menthol nano-slurry;
(6) preparing menthol nanocrystal: pouring the menthol nano-slurry prepared in the step (5) into a grinding pulverizer to be pulverized, and grinding and preparing 200-mesh and 250-mesh menthol nano-crystals under the condition of no condensed water;
(7) weighing 20-40 parts of menthol nanocrystal, 5-8 parts of dispersing agent, 1-2 parts of defoaming agent and 60-80 parts of water according to the parts by weight, stirring for 1-2h at 3000-3500r/min, and filtering with gauze to obtain menthol nanocrystal superfine dispersion slurry;
(8) weighing 30-40% of menthol nanocrystal ultrafine dispersion slurry, 5-10% of thickening agent, 5-10% of adhesive and the balance of water according to the mass percentage, mixing, uniformly stirring, and preparing to obtain menthol nanocrystal printing slurry;
(9) printing the silk fabric by the prepared menthol nanocrystalline printing paste in a screen printing mode, then drying in a dryer at 60-80 ℃ for 10-20min, soaping, washing and drying to obtain the menthol nanocrystalline cool fabric.
2. The method for printing and finishing the natural cool feeling of the silk fabric according to the claim 1, wherein in the step (1), the hot water and the stain removal are as follows: decocting with 90-100 deg.C water for 3-5 min.
3. The printing and finishing method for the continuous natural cool feeling of the real silk fabric according to the claim 1, characterized in that in the step (1), the steam flash explosion treatment parameters are as follows: treating at 1.3MPa for 30-40s, and then instantly releasing pressure within 0.1 s.
4. The printing and finishing method for the natural cool feeling of the silk fabric according to claim 1, wherein in the step (4), the mass ratio of ethanol to water in the ethanol solution is 3:1-5:1, and the mass ratio of the mint leaves to the ethanol solution is 1:20-1: 12.
5. The method for printing and finishing the natural cool feeling of the silk fabrics as claimed in claim 1, wherein in the step (4), the beating time is 20-30min, and the rotation speed is 1000-1300 rpm.
6. The method for printing and finishing the natural cool feeling of the real silk fabric according to claim 1, wherein in the step (7), the dispersant is one or more of a dispersant MF, a dispersant lignin 85A and a dispersant NNO.
7. The printing and finishing method for the natural cool feeling of the silk fabric according to claim 1, wherein in the step (7), the defoaming agent is one or two of A-901 and A-1205.
8. The method for printing and finishing the natural cool feeling of the real silk fabric according to the claim 1, characterized in that in the step (8), the thickening agent is one or two of PTF-828 and EM-610.
9. The method for printing and finishing the natural cool feeling of the real silk fabric according to claim 1, wherein in the step (8), the adhesive is one or two of low-temperature adhesives HB-6020 and BE-4200.
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