CN110485153B - Cashmere textile foam method graphene finishing process based on water-based high polymer resin - Google Patents
Cashmere textile foam method graphene finishing process based on water-based high polymer resin Download PDFInfo
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Abstract
The invention relates to a foam method graphene finishing process for cashmere textile based on aqueous high polymer resin. The finishing process can protect the natural hand feeling style of the cashmere textile to the maximum extent, and endows the cashmere textile with excellent antistatic, anti-pilling, antibacterial, warm-keeping and other functions under the condition of not influencing the unique soft, fluffy and rebound hand feeling of the cashmere product. Compared with the traditional impregnation method, the textile foam finishing process based on the water-based high polymer resin has the advantages of obviously less consumption of textile auxiliaries, obviously reduced energy consumption and emission, higher production efficiency and more obvious effect. By adopting the technology, the anti-pilling grade of the cashmere textile can be increased by 1.5-2.5 grade, and the half-life period of the static voltage is reduced by more than 85-95%. The technical method can be widely used for surface functional finishing of various textile products, is beneficial to environmental protection, and has good application effect and market prospect.
Description
Technical Field
The invention relates to the field of cashmere textile finishing, and particularly relates to a foam-process graphene finishing process for cashmere textiles based on aqueous high polymer resin.
Background
In daily life, textile clothing products are easy to fluff and pilling and generate static accumulation due to the physical, chemical and morphological structure characteristics of cashmere, so that the easy care performance and the wearing comfort are greatly influenced, and the added value of products is greatly discounted. In the production practice, the main solution to these defects of cashmere textiles is to treat the film-forming polymeric resin on the surface of cashmere fibers by an impregnation method (addition), or destroy the scales of cashmere fibers (subtraction), or combine the addition and the subtraction, or adsorb an antistatic agent on the cashmere fibers. Although the methods achieve good effects, the damage of cashmere fibers is large, and the hand feeling of products is remarkably deteriorated; meanwhile, the schemes not only have large using amount of the auxiliary agent, but also have the finishing effect which is usually not obvious enough and not durable enough. In order to solve these problems, it is a research and development focus in the field to research and develop a new finishing technology or select new related auxiliary agents. Currently, main technical methods for anti-pilling and antistatic finishing of cashmere textiles include:
1. the technical scheme is that a film-forming polymer is treated on the surface of cashmere fibers by an impregnation method, and the oriented friction effect of the cashmere textile is reduced by the covering effect of a polymer adhesive film on a cashmere scale layer, so that the effect of resisting fuzzing and pilling is achieved.
The synthesis and application of a novel cashmere knitted fabric anti-pilling agent, such as the one by Annlai, Dang Hui Ru and Chi Hua (Ma Fang science and technology, vol. 42, No. 3 in 2014), disclose that the anti-pilling grade of cashmere products can be improved by 1-2 grade by finishing the cashmere products with self-made organic silicon modified polyether type anionic waterborne polyurethane, and the hand feeling of the finished cashmere products is improved compared with that of the traditional finishing agent.
The synthesis and application of polyester type waterborne polyurethane cashmere anti-pilling finishing agent, such as the polyester type waterborne polyurethane cashmere anti-pilling finishing agent written by Liuhai Britain, Xucheng Shu and Shichen Wei (printing and dyeing auxiliary agent 2015, volume 4), discloses that the anti-pilling performance of cashmere knitted fabrics can be improved by 1-2 grades by finishing cashmere products with self-made organic silicon modified polyester type anionic waterborne polyurethane, and the fabrics have good softness, air permeability and moisture permeability.
However, because the polymer auxiliary agent is treated on the surface of the fiber by adopting an impregnation method, the film-forming polymer inevitably penetrates into the cashmere yarn in a large amount, and a bonding effect is generated between the fiber and the yarn in the drying film-forming process, so that the consumption of the auxiliary agent is large and the hand feeling of the cashmere product is poor; meanwhile, the technical scheme cannot solve the problem that cashmere products are easy to generate static electricity.
2. The technical scheme is that biological enzyme, oxidant and the like are adopted to partially destroy the scale structure of cashmere fibers, so that the scales are subjected to angle grinding, the directional friction effect is reduced, the moisture absorption is improved, and the anti-pilling and antistatic effects are achieved.
The 'reduction-enzyme combination method pilling resistance finishing research' of Li Fazhou, Chen Qian Wei, Dai Fei and the like (9 th 2010 of knitting industry) discloses that the surface scale structure of cashmere fibers is controllably destroyed through the combined action of a reducing agent, protease and hydrogen peroxide, and the pilling resistance grade of the cashmere knitted fabric is improved by 2-3 grades.
However, the hand feeling of the cashmere product after finishing by the technical scheme is seriously deteriorated, the process is complex, the operation is difficult, and the damage of fibers which is difficult to correct can be caused; further, although the hydrophilicity of the fiber surface is improved due to the destruction of the scale layer, it is still insufficient to impart an excellent antistatic effect thereto.
3. The technical scheme is that antistatic finishing technology based on physical and chemical methods is adopted, antistatic chemicals are treated on the surface of fibers, or the surface of the fibers is roughened to improve the moisture absorption of the fibers, or the antistatic effect of products is realized through technologies such as blended yarns and weaving.
For example, the new antistatic finishing method for wool fabric, as described in Zhangangong, Fuxirong, and Wangliping (2016 (Ching's science and technology), introduces the application of metal ions, plasma, nano carbon black, etc. in antistatic finishing of wool, and achieves the antistatic effect by improving the conductivity of the surface of wool fiber.
For example, "development of a super cool polyester fiber/cotton/cashmere double-sided yarn-dyed fabric" by the great Jie (mao Fang science and technology, 6 th 2017) makes full use of excellent moisture absorption and sweat discharge characteristics of a super cool polyester fiber/cotton blended yarn to develop the double-sided yarn-dyed fabric. The fabric gives full play to the comprehensive advantages of 3 fibers, has smooth and flat front surface, soft and warm back surface, moisture absorption and sweat releasing, static resistance and difficult fluffing and pilling.
However, the technical scheme is generally complex in process and flow, or strong in pertinence, or too large in influence on the style and hand feeling of cashmere products to be widely applied; meanwhile, the anti-pilling performance of the cashmere product is difficult to obtain simultaneously with the antistatic effect of the cashmere product through the technical scheme.
Disclosure of Invention
The invention aims to provide a foam-process graphene finishing process for cashmere textile based on aqueous high polymer resin, a finishing agent and the cashmere textile. The finishing process endows the cashmere products with excellent antistatic and anti-pilling functions under the condition of not influencing the unique style and hand feeling of the cashmere products.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a cashmere textile foam method graphene finishing process based on aqueous polymer resin comprises the following steps:
(1) a step of preparing and foaming an aqueous polymer foaming liquid, wherein a part of the aqueous polymer resin emulsion is
Mixing foam distributing agent, partial foam stabilizer and totally softened water to obtain aqueous polymer foaming liquid, and foaming to obtain aqueous polymer
A resin foam;
(2) preparing and foaming a graphene foaming solution, namely mixing a graphene dispersion solution with the rest of aqueous polymer resin emulsion, the rest of foaming agent and the rest of foam stabilizer to obtain a graphene foaming solution and foaming to obtain a graphene foam dispersion, wherein the graphene content in the graphene dispersion solution is 0.1-0.2 wt%; the graphene dispersion liquid accounts for 85-95 wt% of the graphene foaming liquid;
(3) coating the water-based polymer resin foam prepared in the step (1) on the outer surface (front surface) of the cashmere textile and drying to prepare a functional cashmere semi-product;
(4) and (3) coating the surface of the cashmere textile by a foam method, namely coating the graphene foam dispersion prepared in the step (2) on the surface of the functional cashmere semi-product prepared in the step (3) and drying to prepare the functional cashmere textile.
According to the scheme, the aqueous polymer resin emulsion is one of polyether type anionic aqueous polyurethane emulsion with the solid content of 30 +/-2 wt%, polyether type cationic aqueous polyurethane emulsion with the solid content of 30 +/-2 wt%, organic silicon modified anionic aqueous polyurethane emulsion with the solid content of 30 +/-2 wt%, organic silicon modified cationic aqueous polyurethane emulsion with the solid content of 30 +/-2 wt%, polyurethane modified anionic polyacrylate emulsion with the solid content of 30 +/-2 wt% and polyurethane modified cationic polyacrylate emulsion with the solid content of 30 +/-2 wt%.
According to the scheme, the foaming agent is selected from sodium dodecyl sulfate or betaine, and the sodium dodecyl sulfate is suitable for the anionic aqueous polymer resin emulsion; the foam stabilizer is sodium alginate or nonionic guar gum, and the sodium alginate is suitable for anionic water-based polymer resin emulsion.
According to the scheme, the weight ratio of the total amount of the aqueous polymer resin emulsion, the total amount of the foaming agent and the total amount of the foam stabilizer in the steps (1) and (2) is 50-100: 5-10: 5-10, wherein the polymer resin emulsion, the foaming agent and the foam stabilizer in the step (1) respectively account for 70-80 wt% of the total amount.
According to the scheme, the softened water in the step (1) accounts for 85-95 wt% of the aqueous polymer foaming liquid.
According to the scheme, the graphene dispersion liquid is prepared by a physical method, and the solid content of the graphene dispersion liquid is 0.2-0.3 wt%, wherein the graphene content is 0.1-0.2 wt%. Compared with the method of preparing graphene oxide by a chemical method and then reducing the graphene oxide to obtain reduced graphene oxide, the graphene dispersion liquid prepared by a physical method is preferable, not only is the functionality better, but also the later-stage reduction processing process of graphene oxide which cannot be accepted by cashmere fibers can be avoided.
According to the scheme, the foaming temperature of the aqueous high-molecular foaming liquid in the step (1) is 20-40 ℃;
according to the scheme, the foaming temperature of the graphene foaming liquid in the step (2) is 20-40 ℃;
according to the scheme, the number of the graphene layers in the step (2) is not more than 7, and the total thickness is not more than 2.5 nm.
According to the scheme, the coating amount of the cashmere textile foam method primary coating in the step (3) is controlled to be 1.5-2.5 wt% of dry weight increase rate of the cashmere textile.
According to the scheme, the drying temperature in the step (3) is 80-90 ℃, and the drying time is 10-20 min.
According to the scheme, the coating amount of the foam surface coating of the cashmere textile in the step (4) is controlled to be 0.2-0.4 wt% of the dry weight increment of the cashmere textile.
According to the scheme, the drying temperature in the step (4) is 90-100 ℃, and the drying time is 15-30 min.
According to the scheme, the cashmere textile is yarn or knitwear with cashmere content not less than 70wt% after cleaning.
According to the scheme, the softened water is preferably soft water with the total hardness of less than 30ppm of CaCO 3.
According to the scheme, the cashmere textile foam method graphene finishing process based on the water-based high polymer resin specifically comprises the following steps:
step (1): preparing aqueous polymer foaming liquid and foaming
(1.3) putting 80-90% of softened water in the total amount into a foaming machine batching tank, putting 70-80% of foaming agent and 70-80% of foam stabilizer dissolved in advance by using the residual softened water into the foaming machine batching tank, and then putting 70-80% of polymer resin emulsion and uniformly stirring the mixture under stirring;
(1.4) starting a foaming machine, and preparing the aqueous polymer resin foam at the temperature of 20-40 ℃ for later use.
Step (2): preparing graphene foaming liquid and foaming
(2.1) carrying out ultrasonic treatment on the graphene dispersion liquid at room temperature for 15-30 min, and then putting the graphene dispersion liquid into another foaming machine batching tank; adding the rest of foam stabilizer, the rest of foaming agent and the rest of aqueous high polymer resin emulsion into a mixing tank of a foaming machine in turn under stirring, and uniformly and fully mixing and dissolving;
and (2.2) starting a foaming machine, and preparing the graphene foam dispersion at the temperature of 20-40 ℃ for later use.
And (3): foaming method for primary coating of cashmere textile
(3.1) coating the surface of the cashmere textile with the aqueous polymer resin foam prepared in the step (1.2), wherein the coating amount is controlled so that the increase rate of the dry weight of the cashmere textile is 1.5-2.5 wt%;
and (3.2) drying the cashmere textile, and drying for 10-20 min at 80-90 ℃ to obtain the functional cashmere semi-finished product.
And (4): foaming surface coating step for cashmere textile
(4.1) coating the graphene foam dispersion prepared in the step (2.2) on the surface of the cashmere textile (3.2), wherein the coating amount is that the dry weight increment rate of the cashmere textile is controlled to be 0.2-0.4 wt%;
and (4.2) drying the cashmere textile, and drying for 15-30 min at the temperature of 90-100 ℃ to obtain the functional cashmere textile.
The cashmere textile foam method graphene finishing agent based on the water-based high polymer resin comprises water-based high polymer resin foam and a graphene foam dispersoid, wherein the water-based high polymer resin foam is prepared by mixing a part of water-based high polymer resin emulsion, a part of foaming agent, a part of foam stabilizer and all softened water to obtain water-based high polymer foaming liquid and foaming the water-based high polymer resin foam; the graphene foam dispersion is prepared by mixing a graphene dispersion liquid with the residual aqueous polymer resin emulsion, the residual foaming agent and the residual foam stabilizer to obtain a graphene foaming liquid and foaming the graphene foaming liquid, wherein the graphene content in the graphene dispersion liquid is 0.1-0.2 wt%; the graphene dispersion liquid accounts for 85-95 wt% of the graphene foaming liquid; the aqueous polymer resin foam is used as a coating material for a cashmere textile foam method base coat; the graphene foam dispersion is used as a coating material for cashmere textile foam method surface coating.
Based on the cashmere textile finished by the finishing agent, the foam-method bottom coating of the cashmere textile is water-based high-molecular resin foam; the content of the aqueous polymer resin foam is controlled to be 1.5-2.5 wt% of dry weight increase rate of the cashmere textile after the aqueous polymer resin foam bottom coating is formed by coating; the surface layer is graphene foam dispersoid, and the content of the graphene foam dispersoid is controlled by the weight percentage increase of the dry weight of the cashmere textile after the graphene foam dispersoid surface layer is formed by coating and is 0.2-0.4 wt%.
Compared with the prior art, the method has the following advantages and characteristics:
(1) the cashmere textile foam method graphene finishing process based on the water-based high polymer resin provided by the invention utilizes the water-based high polymer resin foam and the graphene foam dispersion provided by the invention, and adopts a two-step processing mode of foam method resin primary coating and foam method graphene surface coating to obtain two effects of pilling resistance and static resistance. And is beneficial to saving the auxiliary agent and ensuring that the treatment effect has certain durability. The finishing process can protect the natural hand feeling style of the cashmere textile to the maximum extent, and endows the cashmere textile with excellent antistatic, anti-pilling, antibacterial, warm-keeping and other functions under the condition of not influencing the unique soft, fluffy and rebound hand feeling of the cashmere product. Compared with the traditional impregnation method, the textile foam finishing method based on the water-based high polymer resin has the advantages of obviously less consumption of textile auxiliaries, obviously reduced energy consumption and emission, higher production efficiency and more obvious effect. By adopting the technology, the anti-pilling grade of the cashmere textile can be increased by 1.5-2.5 grade, and the half-life period of the static voltage is reduced by more than 85-95%. The technical method can be widely used for surface functional finishing of various textile products, is beneficial to environmental protection, and has good application effect and market prospect.
(2) The graphene foam dispersion provided by the invention can ensure that the graphene is partially exposed to the outside to the greatest extent, is favorable for the graphene to be firmly adhered to the surface of the fiber, is favorable for realizing the functionality of the fiber, ensures the antistatic performance and ensures that the treatment effect of the fiber has certain durability. Therefore, the graphene can be effectively exposed outside the resin layer and adhered to the fibers by the resin after the treatment, so that the washing fastness of the finishing effect is ensured, and the antistatic property is also ensured.
(3) The cashmere textile foam method graphene finishing process based on the water-based high polymer resin is characterized in that a single-side finishing mode is adopted to process the outer surface of a cashmere product (one surface which is worn close to the skin is the back, and the outward surface is the front (outer surface)), so that the fibers on the surface of the front are bonded and are not easy to tangle; the friction force between fibers on the back surface is large, the fibers are prevented from being drawn from the cloth surface, and the anti-pilling finishing effect of the surface of the fabric is enhanced. Meanwhile, the front side of the cashmere product is processed by adopting a foam method single-side finishing mode, and the water-based high polymer resin is not immersed in the yarn but only attached to the surface of the fiber or the yarn, so that the application amount of the auxiliary agent is small, the influence on the hand feeling of the product is small, and the finishing effect is more obvious.
Detailed Description
Note: the fabrics are all pure cashmere knitted fabrics; the graphene dispersion liquid prepared by the physical method is an aqueous dispersion liquid prepared by an intercalation ultrasonic stripping method.
Example 1
The foam method graphene finishing technology and process for the cashmere textile based on the water-based high polymer resin specifically comprise the following steps:
(1) preparing and foaming the aqueous polymer foaming liquid: mixing part of aqueous polymer resin emulsion, part of foaming agent, part of foam stabilizer and all softened water to obtain aqueous polymer foaming liquid, and foaming to obtain aqueous polymer resin foam, which specifically comprises the following steps:
(1.1) putting softened water accounting for 85 percent of the total amount into a foaming machine batching tank, putting 70 percent of foaming agent and 70 percent of foam stabilizer which are pre-dissolved by the rest softened water into the foaming machine batching tank, and then putting 70 percent of polymer resin emulsion into the foaming machine batching tank under stirring and uniformly stirring;
(1.2) starting a foaming machine, and preparing the aqueous polymer resin foam at the temperature of 25-30 ℃ for later use.
(2) Preparing and foaming a graphene foaming liquid: mixing the graphene dispersion liquid with the residual aqueous polymer resin emulsion, the residual foaming agent and the residual foam stabilizer to obtain a graphene foaming liquid, and foaming to obtain the graphene foam dispersion, wherein the step specifically comprises the following steps:
(2.1) carrying out ultrasonic treatment on the graphene dispersion liquid at room temperature for 25min, and then putting the graphene dispersion liquid into a material mixing tank of another foaming machine; adding the rest of foam stabilizer, the rest of foaming agent and the rest of aqueous high polymer resin emulsion into a mixing tank of a foaming machine in turn under stirring, and uniformly and fully mixing and dissolving;
and (2.2) starting a foaming machine, and preparing the graphene foam dispersion at the temperature of 25-30 ℃ for later use.
(3) Carrying out primary coating on the cashmere textile by a foam method: coating the water-based polymer resin foam prepared in the step (1) on the surface of a cashmere textile and drying to prepare a functional cashmere semi-product, which specifically comprises the following steps:
(3.1) coating the surface of the cashmere textile with the aqueous polymer resin foam prepared in the step (1.2), wherein the coating amount is used for controlling the increase rate of the dry weight of the cashmere textile to be 2.5 wt%;
and (3.2) drying the cashmere textile, and drying for 10min at the temperature of 80-90 ℃ to obtain the functional cashmere semi-finished product.
(4) The foam surface coating method for cashmere textiles comprises the following steps: coating the graphene foam dispersion prepared in the step (2) on the surface of the functional cashmere semi-finished product prepared in the step (3) and drying to prepare the functional cashmere textile, wherein the step specifically comprises the following steps:
(4.1) coating the graphene foam dispersion prepared in the step (2.2) on the surface of the cashmere textile (3.2), wherein the coating amount is that the dry weight increment rate of the cashmere textile is controlled to be 0.4 wt%;
and (4.2) drying the cashmere textile, and drying for 20min at the temperature of 90-100 ℃ to obtain the functional cashmere textile.
The application of the technology of the invention is as follows: can be used for antistatic, anti-pilling and other functional finishing of cashmere products.
Compared with the traditional impregnation method, the method has the advantages of obviously less consumption of textile auxiliary, obviously reduced energy consumption and discharge and higher production efficiency; the anti-pilling grade of the cashmere textile can be improved by 2.5 grade, and the half-life period of the static voltage is reduced by more than 95 percent; the method is particularly suitable for the surface modification processing of the textile based on the graphene.
Example 2
The foam method graphene finishing technology and process for the cashmere textile based on the water-based high polymer resin specifically comprise the following steps:
(1) preparing and foaming the aqueous polymer foaming liquid: mixing part of aqueous polymer resin emulsion, part of foaming agent, part of foam stabilizer and all softened water to obtain aqueous polymer foaming liquid, and foaming to obtain aqueous polymer resin foam, which specifically comprises the following steps:
(1.1) putting 85% of softened water in the total amount into a foaming machine batching tank, putting 75% of foaming agent and 75% of foam stabilizer dissolved in advance by using the rest softened water into the foaming machine batching tank, and then putting 75% of polymer resin emulsion and uniformly stirring the polymer resin emulsion under stirring;
(1.2) starting a foaming machine, and preparing the aqueous polymer resin foam at the temperature of 25-30 ℃ for later use.
(2) Preparing and foaming a graphene foaming liquid: mixing the graphene dispersion liquid with the residual aqueous polymer resin emulsion, the residual foaming agent and the residual foam stabilizer to obtain a graphene foaming liquid, and foaming to obtain the graphene foam dispersion, wherein the step specifically comprises the following steps:
(2.1) carrying out ultrasonic treatment on the graphene dispersion liquid at room temperature for 25min, and then putting the graphene dispersion liquid into a material mixing tank of another foaming machine; adding the rest of foam stabilizer, the rest of foaming agent and the rest of aqueous high polymer resin emulsion into a mixing tank of a foaming machine in turn under stirring, and uniformly and fully mixing and dissolving;
and (2.2) starting a foaming machine, and preparing the graphene foam dispersion at the temperature of 25-30 ℃ for later use.
(3) Carrying out primary coating on the cashmere textile by a foam method: coating the water-based polymer resin foam prepared in the step (1) on the surface of a cashmere textile and drying to prepare a functional cashmere semi-product, which specifically comprises the following steps:
(3.1) coating the surface of the cashmere textile with the aqueous polymer resin foam prepared in the step (1.2), wherein the coating amount is used for controlling the increase rate of the dry weight of the cashmere textile to be 2.0 wt%;
and (3.2) drying the cashmere textile, and drying for 15min at 85-90 ℃ to obtain the functional cashmere semi-finished product.
(4) The foam surface coating method for cashmere textiles comprises the following steps: coating the graphene foam dispersion prepared in the step (2) on the surface of the functional cashmere semi-finished product prepared in the step (3) and drying to prepare the functional cashmere textile, wherein the step specifically comprises the following steps:
(4.1) coating the graphene foam dispersion prepared in the step (2.2) on the surface of the cashmere textile (3.2), wherein the coating amount is that the dry weight increment rate of the cashmere textile is controlled to be 0.3 wt%;
and (4.2) drying the cashmere textile, and drying for 25min at the temperature of 95-100 ℃ to obtain the functional cashmere textile.
The application of the technology of the invention is as follows: can be used for antistatic, anti-pilling and other functional finishing of cashmere products.
Compared with the traditional impregnation method, the method has the advantages of obviously less consumption of textile auxiliary, obviously reduced energy consumption and discharge and higher production efficiency; the anti-pilling grade of the cashmere textile can be increased by 2.0-2.5 grades, and the half-life period of the static voltage is reduced by more than 90%; the method is particularly suitable for the surface modification processing of the textile based on the graphene.
Example 3
The foam method graphene finishing technology and process for the cashmere textile based on the water-based high polymer resin specifically comprise the following steps:
(1) preparing and foaming the aqueous polymer foaming liquid: mixing part of aqueous polymer resin emulsion, part of foaming agent, part of foam stabilizer and all softened water to obtain aqueous polymer foaming liquid, and foaming to obtain aqueous polymer resin foam, which specifically comprises the following steps:
(1.1) putting softened water accounting for 85 percent of the total amount into a foaming machine batching tank, putting 80 percent of foaming agent and 80 percent of foam stabilizer which are pre-dissolved by the rest softened water into the foaming machine batching tank, and then putting 80 percent of polymer resin emulsion into the foaming machine batching tank under stirring and uniformly stirring;
(1.2) starting a foaming machine, and preparing the aqueous polymer resin foam at the temperature of 25-30 ℃ for later use.
(2) Preparing and foaming a graphene foaming liquid: mixing the graphene dispersion liquid with the residual aqueous polymer resin emulsion, the residual foaming agent and the residual foam stabilizer to obtain a graphene foaming liquid, and foaming to obtain the graphene foam dispersion, wherein the step specifically comprises the following steps:
(2.1) carrying out ultrasonic treatment on the graphene dispersion liquid at room temperature for 25min, and then putting the graphene dispersion liquid into a material mixing tank of another foaming machine; adding the rest of foam stabilizer, the rest of foaming agent and the rest of aqueous high polymer resin emulsion into a mixing tank of a foaming machine in turn under stirring, and uniformly and fully mixing and dissolving;
and (2.2) starting a foaming machine, and preparing the graphene foam dispersion at the temperature of 25-30 ℃ for later use.
(3) Carrying out primary coating on the cashmere textile by a foam method: coating the water-based polymer resin foam prepared in the step (1) on the surface of a cashmere textile and drying to prepare a functional cashmere semi-product, which specifically comprises the following steps:
(3.1) coating the surface of the cashmere textile with the aqueous polymer resin foam prepared in the step (1.2), wherein the coating amount is used for controlling the dry weight increase rate of the cashmere textile to be 1.5 wt%;
and (3.2) drying the cashmere textile, and drying for 20min at 85-90 ℃ to obtain the functional cashmere semi-finished product.
(4) The foam surface coating method for cashmere textiles comprises the following steps: coating the graphene foam dispersion prepared in the step (2) on the surface of the functional cashmere semi-finished product prepared in the step (3) and drying to prepare the functional cashmere textile, wherein the step specifically comprises the following steps:
(4.1) coating the graphene foam dispersion prepared in the step (2.2) on the surface of the cashmere textile (3.2), wherein the coating amount is that the dry weight increment rate of the cashmere textile is controlled to be 0.2 wt%;
and (4.2) drying the cashmere textile, and drying for 30min at the temperature of 95-100 ℃ to obtain the functional cashmere textile.
The application of the technology of the invention is as follows: can be used for antistatic, anti-pilling and other functional finishing of cashmere products.
Compared with the traditional impregnation method, the method has the advantages of obviously less consumption of textile auxiliary, obviously reduced energy consumption and discharge and higher production efficiency; the anti-pilling grade of the cashmere textile can be increased by about 2.0 grade, and the half-life period of the static voltage is reduced by about 90 percent; the method is particularly suitable for the surface modification processing of the textile based on the graphene.
The above description is only a preferred example of the present invention, and actually, the specific raw materials listed in the present invention, the upper and lower limits and interval values of each raw material, and the upper and lower limits and interval values of the process parameters (such as temperature, time, etc.) can all implement the present invention, and the examples are not listed here. Therefore, the above embodiments are not intended to limit the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. Cashmere textile foam method graphene finishing process based on water-based high polymer resin is characterized in that: it comprises the following steps:
(1) mixing a part of aqueous polymer resin emulsion, a part of foaming agent, a part of foam stabilizer and all softened water to obtain aqueous polymer foaming liquid, and foaming to obtain aqueous polymer resin foam;
(2) preparing and foaming a graphene foaming solution, namely mixing a graphene dispersion solution with the rest of aqueous polymer resin emulsion, the rest of foaming agent and the rest of foam stabilizer to obtain a graphene foaming solution and foaming to obtain a graphene foam dispersion, wherein the graphene content in the graphene dispersion solution is 0.1-0.2 wt%; the graphene dispersion liquid accounts for 85-95 wt% of the graphene foaming liquid;
(3) coating the surface of the cashmere textile with the aqueous polymer resin foam prepared in the step (1) and drying to prepare a functional cashmere semi-product; the coating amount of the foam-process primary coating of the cashmere textile in the step (3) is controlled to be 1.5-2.5 wt% of the dry weight increment of the cashmere textile;
(4) coating the surface of the functional cashmere semi-finished product prepared in the step (3) with the graphene foam dispersion prepared in the step (2) and drying to prepare the functional cashmere textile, wherein the coating amount of the foam surface coating of the cashmere textile in the step (4) is to control the dry weight increase rate of the cashmere textile to be 0.2-0.4 wt%;
the weight ratio of the total amount of the aqueous polymer resin emulsion, the total amount of the foaming agent and the total amount of the foam stabilizer in the steps (1) and (2) is 50-100: 5-10: 5-10, wherein the polymer resin emulsion, the foaming agent and the foam stabilizer in the step (1) respectively account for 70-80 wt% of the total amount.
2. The foam graphene finishing process for cashmere textile based on aqueous polymer resin according to claim 1, characterized in that: the aqueous polymer resin emulsion is one of polyether type anionic aqueous polyurethane emulsion with the solid content of 30 +/-2 wt%, polyether type cationic aqueous polyurethane emulsion with the solid content of 30 +/-2 wt%, organic silicon modified anionic aqueous polyurethane emulsion with the solid content of 30 +/-2 wt%, organic silicon modified cationic aqueous polyurethane emulsion with the solid content of 30 +/-2 wt%, polyurethane modified anionic polyacrylate emulsion with the solid content of 30 +/-2 wt% and polyurethane modified cationic polyacrylate emulsion with the solid content of 30 +/-2 wt%; the foaming agent is selected from sodium dodecyl sulfate or betaine, and the sodium dodecyl sulfate is suitable for anionic aqueous polymer resin emulsion; the foam stabilizer is sodium alginate or nonionic guar gum, and the sodium alginate is suitable for anionic aqueous polymer resin emulsion;
the softened water in the step (1) has the total hardness of less than 30ppm CaCo3The soft water of (2); in the step (1), the ratio of softened water in the aqueous polymer foaming liquid is 85-95 wt%;
in the step (2), the number of layers of the graphene is not more than 7, and the total thickness is not more than 2.5 nm.
3. The foam graphene finishing process for cashmere textile based on aqueous polymer resin according to claim 1, characterized in that: the graphene dispersion liquid is prepared by a physical method, and the solid content of the graphene dispersion liquid is 0.2-0.3 wt%;
the foaming temperature of the aqueous high-molecular foaming liquid in the step (1) is 20-40 ℃;
the foaming temperature of the graphene foaming liquid in the step (2) is 20-40 ℃;
the drying temperature in the step (3) is 80-90 ℃, and the drying time is 10-20 min;
and (4) drying at 90-100 ℃ for 15-30 min.
4. The foam graphene finishing process for cashmere textile based on aqueous polymer resin according to claim 1, characterized in that: the cashmere textile is yarn or knitwear with cashmere content not less than 70wt% after cleaning.
5. The foam graphene finishing process for cashmere textile based on aqueous polymer resin according to claim 1, characterized in that: the method comprises the following specific steps:
step (1): preparing aqueous polymer foaming liquid and foaming
(1.1) putting 80-90% of softened water in the total amount into a foaming machine batching tank, putting 70-80% of foaming agent and 70-80% of foam stabilizer dissolved in advance by using the residual softened water into the foaming machine batching tank, and then putting 70-80% of polymer resin emulsion and uniformly stirring the mixture under stirring;
(1.2) starting a foaming machine, and preparing aqueous polymer resin foam at the temperature of 20-40 ℃ for later use;
step (2): preparing graphene foaming liquid and foaming
(2.1) carrying out ultrasonic treatment on the graphene dispersion liquid at room temperature for 15-30 min, and then putting the graphene dispersion liquid into another foaming machine batching tank; adding the rest of foam stabilizer, the rest of foaming agent and the rest of aqueous high polymer resin emulsion into a mixing tank of a foaming machine in turn under stirring, and uniformly and fully mixing and dissolving;
(2.2) starting a foaming machine, and preparing the graphene foam dispersion at the temperature of 20-40 ℃ for later use;
and (3): foaming method for primary coating of cashmere textile
(3.1) coating the surface of the cashmere textile with the aqueous polymer resin foam prepared in the step (1.2), wherein the coating amount is controlled so that the increase rate of the dry weight of the cashmere textile is 1.5-2.5 wt%;
(3.2) drying the cashmere textile, and drying for 10-20 min at 80-90 ℃ to obtain a functional cashmere semi-product;
and (4): foaming surface coating step for cashmere textile
(4.1) coating the graphene foam dispersion prepared in the step (2.2) on the surface of the functional cashmere semi-finished product in the step (3.2), wherein the coating amount is used for controlling the dry weight increase rate of the cashmere textile to be 0.2-0.4 wt%;
and (4.2) drying the cashmere textile, and drying for 15-30 min at the temperature of 90-100 ℃ to obtain the functional cashmere textile.
6. The functional cashmere textile prepared by the foam graphene finishing process for cashmere textile according to claim 1.
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