High-strength blended yarn production process, high-strength blended yarn and fabric
By using grafting and cross-linking reactions of pretreatment and posttreatment solutions during the production of blended yarn, the problem of limited improvement in the breaking strength of blended yarn was solved, and the production of high-strength blended yarn with high strength, low unevenness and soft touch was achieved.
Patent Information
- Application Number
- CN202311308014.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-11
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2043-10-11
AI Technical Summary
The breaking strength of existing blended yarns has limited improvement and needs to be further enhanced.
The blended yarn is treated with a pretreatment solution and a posttreatment solution. The pretreatment solution is composed of 3-methacryloyloxypropyltrimethoxysilane, maleic anhydride, diacetone acrylamide, etc., and the posttreatment solution is composed of heptane dihydrazide, etc. The cohesion and density of the yarn are improved through grafting and cross-linking reactions.
It significantly improves the breaking strength of blended yarn and reduces unevenness and hairiness, giving high-strength blended yarn the advantages of high breaking strength, low unevenness, and low hairiness. It also results in a uniform appearance, soft touch, and good warmth retention.
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Abstract
Description
Technical Field
[0001] This application relates to the field of blended yarn technology, and more specifically, to a high-strength blended yarn production process and high-strength blended yarn and fabric. Background Technology
[0002] Blended yarn refers to single yarn made by blending two or more different types of fibers, such as polyester-cotton blended yarn and polyester-viscose blended yarn. The combination of different fiber types can improve the breaking strength and antistatic properties of the blended yarn. The production process of blended yarn generally involves mixing different types of fibers, followed by processes such as opening, carding, drawing, roving, spinning, and winding to obtain the blended yarn. However, the applicant has found in actual processing that simply improving the breaking strength through the combination of different fiber types has limited effect and requires further improvement. Summary of the Invention
[0003] In order to increase the breaking strength of blended yarn, this application provides a high-strength blended yarn production process, as well as high-strength blended yarn and fabric.
[0004] Firstly, this application provides a high-strength blended yarn production process, which adopts the following technical solution:
[0005] A process for producing high-strength blended yarn includes the following steps:
[0006] S1. Prepare pretreatment solution, ammonium persulfate aqueous solution, and posttreatment solution;
[0007] S2. Mix cotton fiber, polyester fiber, and bamboo pulp fiber to obtain a mixed fiber;
[0008] S3. The blended fibers are processed through opening, carding, drawing, roving, and spinning to obtain blended yarn;
[0009] S4. Soak the blended yarn in the pretreatment solution for 10-20 minutes, stir for 5-10 minutes, then add ammonium persulfate solution, stir for 10-20 minutes, take it out, and obtain the pretreated blended yarn.
[0010] S5. Immerse the pretreated blended yarn in the post-treatment solution for 1-3 minutes, stir for 1 minute, take it out, dry it, and wind it to obtain high-strength blended yarn.
[0011] The pretreatment solution is mainly made of the following raw materials in parts by weight: 90-110 parts water, 7-9 parts 3-methacryloyloxypropyltrimethoxysilane, 4-6 parts maleic anhydride, 7-9 parts diacetone acrylamide, 8-12 parts penetrant, 3-7 parts emulsifier, and 1-10 parts chelating agent.
[0012] The mass concentration of ammonium persulfate in the ammonium persulfate aqueous solution is 10-20%;
[0013] The post-treatment solution is mainly made of the following raw materials in parts by weight: 90-110 parts water, 6-8 parts heptanediol hydrazide, 8-12 parts penetrant, and 1-10 parts chelating agent.
[0014] The high-strength blended yarn obtained by the production process of this application has a breaking strength >50cN / tex, evenness <10%, and hairiness <6%, which makes the high-strength blended yarn exhibit the advantages of high breaking strength, low evenness, and low hairiness. In addition, the high-strength blended yarn has a uniform appearance, soft touch, soft hand feel, good warmth retention, and economic value.
[0015] 3-Methacryloxypropyltrimethoxysilane, maleic anhydride, and diacetone acrylamide were added to the pretreatment solution. 3-Methacryloxypropyltrimethoxysilane contains three siloxy groups, a carbon-carbon double bond, and an ester group, which can be grafted onto the surface of the blended yarn. Maleic anhydride hydrolyzes in water to form two carboxyl groups and also contains a carbon-carbon double bond. The carboxyl groups can react with the hydroxyl groups on the surface of the blended yarn, further grafting them onto the surface. Diacetone acrylamide contains carbon-carbon double bonds and ketone carbonyl groups. Under the action of ammonium persulfate, it can undergo polymerization reactions with 3-methacryloxypropyltrimethoxysilane or maleic anhydride, or even itself, and graft onto the surface of blended yarns. Simultaneously, 3-methacryloxypropyltrimethoxysilane and maleic anhydride can also undergo polymerization reactions under the action of ammonium persulfate, introducing active groups such as siloxy groups, ester groups, and ketone carbonyl groups onto the surface of the blended yarns, increasing the amount of branched chains on the surface, and significantly enhancing the cohesion and density of the blended yarns. Adding heptane dihydrazide to the post-treatment solution, which contains two hydrazides, can crosslink with the ketone carbonyl groups on the surface of the pre-treated blended yarns, further increasing the cohesion between the blended yarns, improving the breaking strength of high-strength blended yarns, and reducing unevenness and hairiness of high-strength blended yarns, meeting market demands.
[0016] Furthermore, the pretreatment solution is prepared by the following method: a penetrant, emulsifier, and chelating agent are added to water and mixed, followed by the addition of 3-methacryloyloxypropyltrimethoxysilane, maleic anhydride, and diacetone acrylamide to obtain the pretreatment solution. This pretreatment allows the metal ions in the water to react with the chelating agent, preventing the metal ions from affecting the maleic anhydride.
[0017] Ammonium persulfate aqueous solution is prepared by adding ammonium persulfate to water and mixing to obtain an ammonium persulfate aqueous solution.
[0018] The post-treatment solution was prepared by adding a penetrant and a chelating agent to water, mixing them, and then adding heptanediol hydrazide to obtain the post-treatment solution. This pre-treatment process allows the metal ions in the water to react with the chelating agent, preventing the metal ions from affecting the heptanediol hydrazide.
[0019] Optionally, the weight ratio of the blended yarn, pretreatment solution, ammonium persulfate aqueous solution, and posttreatment solution is (9-11):(90-110):(9-11):(90-110).
[0020] By adopting the above technical solution, the weight ratio of blended yarn, pretreatment solution, ammonium persulfate aqueous solution, and posttreatment solution is limited, which not only facilitates the production of high-strength blended yarn, but also increases the production stability of high-strength blended yarn.
[0021] Optionally, the weight ratio of the cotton fiber, polyester fiber, and bamboo pulp fiber is (5-7):(2-3):(1-2).
[0022] Furthermore, the cotton fiber has a fineness of 10-20 tex and a breaking strength of 20-30 cN / tex; the polyester fiber has a fineness of 10-20 tex and a breaking strength of 20-30 cN / tex; and the bamboo pulp fiber has a fineness of 10-20 tex and a breaking strength of 20-30 cN / tex. Preferably, the cotton fiber has a fineness of 17 tex and a breaking strength of 28 cN / tex; the polyester fiber has a fineness of 17 tex and a breaking strength of 22 cN / tex; and the bamboo pulp fiber has a fineness of 13 tex and a breaking strength of 23 cN / tex.
[0023] Optionally, the temperature of the pretreatment liquid is 60-70℃, and the temperature of the posttreatment liquid is 60-70℃.
[0024] By adopting the above technical solution, the temperature of the pretreatment liquid and the posttreatment liquid is limited, which increases the Brownian motion of the raw materials, improves the effect of the pretreatment liquid on the blended yarn and the posttreatment liquid on the pretreated blended yarn, and enhances the performance of high-strength blended yarn.
[0025] Optionally, the penetrant is a condensation product of fatty alcohol and ethylene oxide. Preferably, the penetrant is penetrant OE-35.
[0026] By adopting the above technical solution, the condensate of fatty alcohol and ethylene oxide serves as a nonionic surfactant, effectively improving permeability. This not only facilitates the grafting of 3-methacryloyloxypropyltrimethoxysilane, maleic anhydride, and diacetone acrylamide, but also increases grafting uniformity, enhances the stability of the pretreatment solution and ammonium persulfate aqueous solution on the blended yarn, and also increases the stability of the posttreatment solution on the pretreated blended yarn. Limiting the permeating agent facilitates its selection and enhances its effectiveness, thereby improving the breaking strength of high-strength blended yarn.
[0027] Optionally, the chelating agent is one or more of diethylenetriaminepentaacetic acid, ethylenediaminetetraacetic acid, and citric acid.
[0028] By adopting the above technical solution, the chelating agent is limited, which can chelate metal ions in the pretreatment solution and posttreatment solution, stabilize the metal ions, and reduce the influence of metal ions on blended yarn and pretreated blended yarn.
[0029] Optionally, the emulsifier is one or more of polyoxyethylene sorbitan monooleate, sorbitan fatty acid ester, and fatty acid polyoxyethylene ester.
[0030] By adopting the above technical solution, the emulsifier is limited, which facilitates the selection of emulsifier, and the raw materials are abundant and easy to obtain.
[0031] Secondly, this application provides a high-strength blended yarn, which adopts the following technical solution:
[0032] A high-strength blended yarn is obtained by processing using the high-strength blended yarn production process described above.
[0033] Optionally, the high-strength blended yarn has a fineness of 20-40 tex. Preferably, the high-strength blended yarn has a fineness of 36 tex.
[0034] Thirdly, this application provides a fabric, which adopts the following technical solution:
[0035] A fabric comprising yarn, said yarn being the high-strength blended yarn described above.
[0036] In summary, this application has at least the following beneficial effects:
[0037] The high-strength blended yarn obtained by the production process of this application utilizes the synergistic effect of 3-methacryloxypropyltrimethoxysilane, maleic anhydride, and diacetone acrylamide to graft the blended yarn. Combined with the self-crosslinking of heptane dihydrazide in the post-treatment solution, the cohesion and density of the blended yarn are greatly increased, the breaking strength is improved, and the unevenness and hairiness are reduced. The high-strength blended yarn exhibits a breaking strength >50cN / tex, an unevenness <10%, and a hairiness <6%, demonstrating the advantages of high breaking strength, low unevenness, and low hairiness. Furthermore, the high-strength blended yarn has a uniform appearance, a soft touch, a soft hand feel, and good warmth retention, meeting market demands and possessing economic value. Detailed Implementation
[0038] To make this application easier to understand, the following detailed description will be provided with reference to embodiments. These embodiments are for illustrative purposes only and are not intended to limit the scope of application of this application. Unless otherwise specified, the raw materials or components used in this application can be obtained commercially or by conventional methods.
[0039] Example
[0040] Example 1
[0041] A process for producing high-strength blended yarn includes the following steps:
[0042] S1. Prepare the pretreatment solution, ammonium persulfate aqueous solution, and posttreatment solution.
[0043] The pretreatment solution is prepared from the following raw materials: 100 kg water, 8 kg 3-methacryloxypropyltrimethoxysilane, 5 kg maleic anhydride, 8 kg diacetone acrylamide, 10 kg penetrant, 5 kg emulsifier, and 5 kg chelating agent. The penetrant, emulsifier, and chelating agent are added to the water and stirred for 3 minutes. Then, 3-methacryloxypropyltrimethoxysilane, maleic anhydride, and diacetone acrylamide are added and stirred for 5 minutes to obtain the pretreatment solution.
[0044] Among them, the pretreatment liquid raw materials contain a penetrant that is a condensation product of fatty alcohol and ethylene oxide, specifically penetrant OE-35; an emulsifier that is polyoxyethylene sorbitan monooleate, specifically polysorbate-80; and a chelating agent that is diethylenetriaminepentaacetic acid.
[0045] The mass concentration of ammonium persulfate in the aqueous solution is 15%. Ammonium persulfate is added to water and stirred for 5 minutes to obtain an aqueous solution of ammonium persulfate.
[0046] The post-treatment solution is made from the following raw materials: 100 kg water, 7 kg heptanediol hydrazide, 10 kg penetrant, and 5 kg chelating agent. The penetrant and chelating agent are added to the water and stirred for 3 minutes. Then, heptanediol hydrazide is added and stirred for 5 minutes to obtain the post-treatment solution.
[0047] Among them, the permeating agent in the post-treatment liquid raw material is a condensation product of fatty alcohol and ethylene oxide, specifically permeating agent OE-35; the chelating agent is diethylenetriaminepentaacetic acid.
[0048] S2. Mix 6 kg of cotton fiber, 2 kg of polyester fiber, and 2 kg of bamboo pulp fiber to obtain mixed fiber.
[0049] Among them, the fineness of cotton fiber is 17 tex and the breaking strength is 28 cN / tex; the fineness of polyester fiber is 17 tex and the breaking strength is 22 cN / tex; and the fineness of bamboo pulp fiber is 13 tex and the breaking strength is 23 cN / tex.
[0050] S3. The blended fibers are processed through cleaning, carding, drawing, roving, and spinning to obtain blended yarn.
[0051] S4. Take 10 kg of the blended yarn obtained in step S3, 100 kg of the pretreatment solution obtained in step S1, and 10 kg of the ammonium persulfate aqueous solution obtained in step S1. Heat the pretreatment solution to 65°C, then immerse the blended yarn in the pretreatment solution for 15 min, followed by stirring for 8 min. Then add the ammonium persulfate aqueous solution and stir for 15 min. Finally, remove the blended yarn to obtain the pretreated blended yarn.
[0052] S5. Take the pretreated blended yarn obtained in step S4 and 100 kg of the post-treatment solution obtained in step S1. Heat the post-treatment solution to 65°C, then immerse the pretreated blended yarn in the solution for 2 minutes, followed by stirring for 1 minute. Remove the pretreated blended yarn and dry it at 100°C. Then wind it to obtain high-strength blended yarn with a fineness of 29 tex.
[0053] Example 2
[0054] A high-strength blended yarn production process differs from Example 1 in that the raw material ratios of the pretreatment solution, ammonium persulfate aqueous solution, and posttreatment solution are different in step S1.
[0055] Specifically: The pretreatment solution is made from the following raw materials: 90 kg of water, 7 kg of 3-methacryloyloxypropyltrimethoxysilane, 6 kg of maleic anhydride, 9 kg of diacetone acrylamide, 8 kg of penetrant, 3 kg of emulsifier, and 1 kg of chelating agent.
[0056] The mass concentration of ammonium persulfate in the aqueous solution is 10%.
[0057] The post-treatment solution is made from the following raw materials: 90 kg water, 8 kg heptanediol hydrazide, 8 kg penetrant, and 1 kg chelating agent.
[0058] Example 3
[0059] A high-strength blended yarn production process differs from Example 1 in that the raw material ratios of the pretreatment solution, ammonium persulfate aqueous solution, and posttreatment solution are different in step S1.
[0060] Specifically, the pretreatment solution is made from the following raw materials: 110 kg of water, 9 kg of 3-methacryloyloxypropyltrimethoxysilane, 4 kg of maleic anhydride, 7 kg of diacetone acrylamide, 12 kg of penetrant, 7 kg of emulsifier, and 10 kg of chelating agent.
[0061] The mass concentration of ammonium persulfate in the aqueous solution is 20%.
[0062] The post-treatment solution is made from the following raw materials: 110 kg water, 6 kg heptanediol hydrazide, 12 kg penetrant, and 10 kg chelating agent.
[0063] Example 4
[0064] A high-strength blended yarn production process differs from Example 1 in that the amounts of cotton fiber, polyester fiber, and bamboo pulp fiber used in step S2 are different; the amounts of blended yarn, pretreatment solution, and ammonium persulfate aqueous solution used in step S4 are different; and the amounts of posttreatment solution used in step S5 are different.
[0065] Specifically, in step S2, the amount of cotton fiber used is 5kg, the amount of cotton fiber used is 3kg, and the amount of bamboo pulp fiber used is 2kg.
[0066] In step S4, the amount of blended yarn used is 9 kg, the amount of pretreatment solution used is 90 kg, and the amount of ammonium persulfate aqueous solution used is 11 kg.
[0067] In step S5, the amount of post-treatment liquid used is 90 kg.
[0068] Example 5
[0069] A high-strength blended yarn production process differs from Example 1 in that the amounts of cotton fiber, polyester fiber, and bamboo pulp fiber used in step S2 are different; the amounts of blended yarn, pretreatment solution, and ammonium persulfate aqueous solution used in step S4 are different; and the amounts of posttreatment solution used in step S5 are different.
[0070] Specifically, in step S2, the amount of cotton fiber used is 7kg, the amount of cotton fiber used is 2kg, and the amount of bamboo pulp fiber used is 1kg.
[0071] In step S4, the amount of blended yarn used is 11 kg, the amount of pretreatment solution used is 110 kg, and the amount of ammonium persulfate aqueous solution used is 9 kg.
[0072] In step S5, the amount of post-treatment liquid used is 110 kg.
[0073] Comparative Example
[0074] Comparative Example 1
[0075] A high-strength blended yarn production process differs from Example 1 in that, in step S1, maleic anhydride and diacetone acrylamide are replaced with an equal amount of 3-methacryloyloxypropyltrimethoxysilane in the raw materials of the pretreatment liquid.
[0076] Comparative Example 2
[0077] A high-strength blended yarn production process differs from Example 1 in that, in step S1, maleic anhydride is used to replace 3-methacryloyloxypropyltrimethoxysilane and diacetone acrylamide in the raw materials of the pretreatment liquid.
[0078] Comparative Example 3
[0079] A high-strength blended yarn production process differs from Example 1 in that, in step S1, an equal amount of diacetone acrylamide is used to replace 3-methacryloxypropyltrimethoxysilane and maleic anhydride in the raw materials of the pretreatment liquid.
[0080] Comparative Example 4
[0081] A high-strength blended yarn production process differs from Example 1 in that, in step S1, an equal amount of 3-methacryloyloxypropyltrimethoxysilane is used to replace heptanediol hydrazide in the raw materials of the post-treatment liquid.
[0082] Performance testing
[0083] The high-strength blended yarns obtained in Examples 1-5 and Comparative Examples 1-4 were used as samples, and the following performance tests were performed on the samples. The test results are shown in Table 1.
[0084] In accordance with GB / T3916-2013 "Determination of breaking strength and elongation at break of single yarn in packaged textiles (CRE method)," the breaking strength of the sample was tested and the breaking strength was calculated. Breaking strength / (cN / tex) = breaking strength / fineness.
[0085] According to GB / T3292.2-2009 "Textiles - Test Method for Yarn Unevenness - Part 2: Photoelectric Method", the unevenness of the yarn of the sample is tested, and the smaller the unevenness, the more uniform the appearance of the high-strength blended yarn.
[0086] According to GB / T7243-1987 "Determination of Yarn Hairiness - Projection Counting Method", the hairiness of the sample is tested, and the smaller the hairiness, the smoother the feel of the high-strength blended yarn.
[0087] Table 1 Test Results
[0088]
[0089]
[0090] As shown in Table 1, the high-strength blended yarn obtained in this application exhibits high breaking strength, ranging from 51.4 to 53.6 cN / tex, demonstrating its high strength advantage. Furthermore, it also exhibits low yarn evenness and low hairiness, with evenness ranging from 7.64% to 9.35% and hairiness from 3.35% to 5.03%, resulting in a uniform appearance and smooth feel. The high-strength blended yarn of this application, through pretreatment with a pretreatment solution, an ammonium persulfate aqueous solution, and a posttreatment solution, demonstrates excellent comprehensive performance, improved practicality, and economic value.
[0091] Example 1 was compared with Comparative Examples 1-3. Comparative Example 1 contained 3-methacryloxypropyltrimethoxysilane in its pretreatment solution; Comparative Example 2 contained maleic anhydride in its pretreatment solution; Comparative Example 3 contained diacetone acrylamide in its pretreatment solution; and Example 1 contained 3-methacryloxypropyltrimethoxysilane, maleic anhydride, and diacetone acrylamide in its pretreatment solution. This demonstrates that the simultaneous addition of 3-methacryloxypropyltrimethoxysilane, maleic anhydride, and diacetone acrylamide to the pretreatment solution, and the synergistic effect among these three components, introduces a large amount of active groups and branched chains onto the surface of the blended yarn, increasing the cohesion and density of the blended yarn. Simultaneously, diacetone acrylamide can crosslink with heptanediol hydrazide in the posttreatment solution, increasing the breaking strength of the high-strength blended yarn and reducing its unevenness and hairiness.
[0092] Example 1 and Comparative Example 4 were compared. In Comparative Example 4, 3-methacryloyloxypropyltrimethoxysilane was added to the raw material of the post-treatment solution; in Example 1, heptanediol hydrazide was added to the raw material of the post-treatment solution. It can be seen that adding heptanediol hydrazide to the post-treatment solution, and utilizing its self-crosslinking with the pre-treated blended fine sand, further enhances the strength of the high-strength blended yarn, resulting in superior performance.
[0093] It should be noted that the embodiments described above are only for explaining this application and do not constitute any limitation on this application. This application has been described with reference to typical embodiments, but it should be understood that the terms used therein are descriptive and explanatory terms, not limiting terms. Modifications can be made to this application within the scope of the claims, and revisions can be made to the invention without departing from the scope and spirit of this application. Although the application described herein relates to specific methods, materials, and embodiments, it does not mean that this application is limited to the specific examples disclosed herein; on the contrary, this application can be extended to all other methods and applications with the same function.
Claims
1. A high strength blended yarn production process characterized by: It comprises the following steps: S1, preparing a pretreatment solution, an ammonium persulfate aqueous solution, and a post-treatment solution; S2, mixing cotton fibers, polyester fibers, and bamboo pulp fibers to obtain mixed fibers; S3, subjecting the mixed fibers to cleaning, carding, drawing, roving, and spinning to obtain blended yarns; S4, placing the blended yarns in the pretreatment solution for 10-20 min of soaking treatment, stirring for 5-10 min, then adding the ammonium persulfate aqueous solution, stirring for 10-20 min, and taking out to obtain pretreated blended yarns; S5, placing the pretreated blended yarns in the post-treatment solution for 1-3 min of soaking treatment, stirring for 1 min, taking out, drying, and winding to obtain high-strength blended yarns. The pretreatment solution is mainly prepared from the following raw materials by weight: water 90-110 parts, 3-methacryloxypropyltrimethoxysilane 7-9 parts, maleic anhydride 4-6 parts, diacetone acrylamide 7-9 parts, a penetrating agent 8-12 parts, an emulsifier 3-7 parts, and a chelating agent 1-10 parts; The mass concentration of ammonium persulfate in the ammonium persulfate aqueous solution is 10-20%; The post-treatment solution is mainly prepared from the following raw materials by weight: water 90-110 parts, heptanedihydrazide 6-8 parts, a penetrating agent 8-12 parts, and a chelating agent 1-10 parts; The weight ratio of the blended yarns, the pretreatment solution, the ammonium persulfate aqueous solution, and the post-treatment solution is (9-11):(90-110):(9-11):(90-110); the temperature of the pretreatment solution is 60-70℃, and the temperature of the post-treatment solution is 60-70℃.
2. A high strength blended yarn production process as claimed in claim 1, wherein: The weight ratio of the cotton fibers, the polyester fibers, and the bamboo pulp fibers is (5-7):(2-3):(1-2).
3. A high strength blended yarn production process as claimed in claim 1, wherein: The penetrating agent is a condensate of a fatty alcohol and ethylene oxide.
4. A high strength blended yarn production process as claimed in claim 1, wherein: The chelating agent is one or more of diethylenetriamine pentaacetate, ethylenediaminetetraacetic acid, and citric acid.
5. A high strength blended yarn production process as claimed in claim 1, wherein: The emulsifier is one or more of polyoxyethylene sorbitan monooleate, sorbitan fatty acid ester, and fatty acid polyoxyethylene ester.
6. A high strength blended yarn, characterized by: It is processed by the high-strength blended yarn production process of any one of claims 1-5.
7. A high strength blended yarn as claimed in claim 6, wherein: The fineness of the high-strength blended yarn is 20-40 tex.
8. A fabric comprising yarns, characterized by: The yarn is the high-strength blended yarn of any one of claims 6-7.
Citation Information
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