Wear-resistant special-whole bamboo-brocade knitted single-sided cloth

Abstract

The invention relates to the technical field of functional fabrics, in particular to a wear-resistant special-whole bamboo-brocade knitted single-sided fabric. The preparation method comprises the following steps: firstly, adding silicon dioxide aerogel into polyethyleneimine, stirring and filtering to obtain silicon dioxide aerogel infiltrated with polyethyleneimine, then stirring and dispersing the silicon dioxide aerogel infiltrated with polyethyleneimine and macromolecular quaternary ammonium salt at a high speed, and then adding graphene and special waterborne polyurethane liquid to prepare a finishing agent; after being treated by the finishing agent, the bamboo-brocade knitted single-sided cloth can obtain excellent wear resistance, and after a dry Martindale wear resistance test is carried out for 40000 times, the fabric is free of abrasion, yarn breakage and obvious pilling on the surface.

Description

Technical Field

[0001] The invention relates to the technical field of functional fabrics, and more specifically to a wear-resistant special bamboo brocade knitted single-sided cloth. Background Art

[0002] Wear-resistant fabrics are widely used in daily life, especially in clothing, bags, tents and other places that need to withstand frequent friction. The wear resistance of fabrics directly determines whether they can withstand repeated friction from external objects and not be easily damaged during use. If the wear resistance of fabrics is poor, they cannot resist wear for a long time in a high-intensity use environment, thus reducing the service life of the product. With the improvement of living standards, people have put forward higher requirements for the wear resistance of fabrics, while the wear resistance of existing fabrics still has a lot of room for improvement.

[0003] Therefore, it is urgent to develop a fabric with good wear resistance. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a wear-resistant special bamboo brocade knitted single-sided fabric, which is used to solve the problem of poor wear resistance of the fabric in the prior art.

[0005] To achieve the above object, the present invention is implemented by the following scheme:

[0006] A wear-resistant special bamboo brocade knitted single-sided fabric, the preparation method of which comprises the following steps:

[0007] S1: adding silica aerogel to polyethyleneimine, stirring and treating at 40-50° C., and then filtering to obtain silica aerogel infiltrated with polyethyleneimine;

[0008] S2: The silica aerogel impregnated with polyethyleneimine obtained in step S1 and the high molecular weight quaternary ammonium salt are dispersed by high-speed stirring for 30 to 60 minutes, and then graphene and aqueous polyurethane liquid are added to prepare a finishing agent;

[0009] S3: On a setting machine, the dyed fabric is padded and dried using the finishing agent obtained in step S2 to obtain a wear-resistant special-finished bamboo brocade knitted single-sided fabric.

[0010] For the above technical scheme, the present invention adds silica aerogel to polyethyleneimine for pretreatment, so that the polymer quaternary ammonium salt is tightly combined in the micropores of the silica aerogel, and then further assists graphene and aqueous polyurethane liquid to prepare a finishing agent for finishing the industrial fabric, thereby giving the industrial fabric excellent wear resistance.

[0011] Preferably, the preparation method of the aqueous polyurethane liquid in step S2 is: adding dibutyltin dilaurate to polyethylene glycol, heating to 70°C and then protecting with nitrogen, adding isophorone diisocyanate and keeping warm for 1-2 hours, then adding N-hydroxymethyldiethanolamine and keeping warm for 1-2 hours, lowering the system temperature to 20-25°C, adding polyhexamethylene guanidine hydrochloride dissolved in DMF solvent, reacting for 3-4 hours, and obtaining an aqueous polyurethane liquid.

[0012] By adopting the above technical scheme, the water-based polyurethane liquid is synthesized from isocyanate, polyether polyol, small molecule chain extender and end-capping agent. The polyurethane molecule contains a large amount of carbamate and urea groups, and has excellent film-forming properties, wear resistance, strong adhesion and excellent mechanical properties. The water-based polyurethane polymer can form a mesh structure with a certain degree of cross-linking with the fiber structure, which can effectively prevent the generation of defects such as snagging and holes during mechanical processing, and plays a twisting role, thereby greatly improving the anti-pilling performance of the fabric.

[0013] Preferably, the silica aerogel in step S1 has a particle size of 20 to 100 μm and a porosity of ≥85%.

[0014] Preferably, in step S1, the mass ratio of silica aerogel to polyethyleneimine is 15:80.

[0015] Preferably, the polymer quaternary ammonium salt is any one of an open-chain polymer quaternary ammonium salt, a heterocyclic polymer quaternary ammonium salt, and a dendritic polymer quaternary ammonium salt.

[0016] Preferably, the weight ratio of polyethylene glycol, isophorone diisocyanate and N-hydroxymethyldiethanolamine is 20:50:10.

[0017] Preferably, the amount of the finishing agent used in step S3 is 30-100 g / L.

[0018] Preferably, in step S3, a dipping and rolling process is adopted, and the pressure is 1-3 kgf / cm 2 The vehicle speed is 40-50m / min and the liquid carrying rate is 60%-70%.

[0019] Preferably, the dyed cloth in step S3 is woven from bamboo fiber and nylon yarn.

[0020] The present application has the following beneficial effects: the bamboo brocade knitted single-sided fabric provided by the present invention has excellent wear resistance. After 40,000 times of dry Martindale wear test, the fabric has no wear through, no yarn breakage, and no obvious pilling on the surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a real picture of the wear-resistant special bamboo brocade knitted single-sided cloth finished by the present invention. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with embodiments, but the scope of protection claimed by the present invention is not limited to the scope described in the embodiments.

[0023] Example 1

[0024] A wear-resistant special bamboo brocade knitted single-sided fabric, the preparation method of which comprises the following steps:

[0025] S1: 15 parts of silica aerogel with a particle size of 65 μm and a porosity of 85% were added to 80 parts of polyethyleneimine, 50 parts of water were added to reduce the viscosity, stirred at 45° C., and then filtered to obtain silica aerogel impregnated with polyethyleneimine.

[0026] S2: 15 parts of silica aerogel soaked in polyethyleneimine obtained in step S1 and 5 parts of open-chain polymer quaternary ammonium salt were dispersed by high-speed stirring for 60 minutes, and then 2 parts of graphene and 70 parts of aqueous polyurethane liquid were added to prepare a finishing agent. The applicant internally named this finishing agent TX-60 finishing agent.

[0027] The aqueous polyurethane liquid is prepared by the following method: 2 parts of dibutyltin dilaurate are added to 20 parts of polyethylene glycol, the temperature is raised to 70°C and then protected by nitrogen, 50 parts of isophorone diisocyanate are added and kept warm for 2 hours, 10 parts of N-hydroxymethyldiethanolamine are added and kept warm for 2 hours, the system temperature is lowered to 25°C, 10 parts of polyhexamethylene guanidine hydrochloride dissolved in DMF solvent (the mass ratio of polyhexamethylene guanidine hydrochloride to DMF solvent is 3:7) are added, and the reaction is carried out for 3 hours to obtain an aqueous polyurethane liquid.

[0028] S3: On the setting machine, the dyed fabric woven from bamboo fiber and nylon yarn is dipped and rolled using the finishing agent obtained in step S2 at a pressure of 2 kgf / cm 2 The speed is 50 m / min, the liquid carrying rate is 60%, and it is dried at 165-175°C to obtain a wear-resistant special finishing bamboo brocade knitted single-sided fabric, in which the amount of the finishing agent is 30 g / L.

[0029] Example 2

[0030] A wear-resistant special bamboo brocade knitted single-sided fabric, the preparation method of which comprises the following steps:

[0031] S1: 15 parts of silica aerogel with a particle size of 65 μm and a porosity of 90% were added to 80 parts of polyethyleneimine, and 55 parts of water were added to reduce the viscosity. The mixture was stirred at 40° C. and then filtered to obtain silica aerogel impregnated with polyethyleneimine.

[0032] S2: 15 parts of silica aerogel impregnated with polyethyleneimine obtained in step S1 and 5 parts of heterocyclic polymer quaternary ammonium salt are dispersed under high-speed stirring for 30 minutes, and then 2 parts of graphene and 70 parts of aqueous polyurethane liquid are added to prepare a finishing agent.

[0033] The aqueous polyurethane liquid is prepared by the following method: 2 parts of dibutyltin dilaurate are added to 20 parts of polyethylene glycol, the temperature is raised to 70°C and then protected by nitrogen, 50 parts of isophorone diisocyanate are added and kept warm for 2 hours, 10 parts of N-hydroxymethyldiethanolamine are added and kept warm for 2 hours, the system temperature is lowered to 20°C, 10 parts of polyhexamethylene guanidine hydrochloride dissolved in DMF solvent (the mass ratio of polyhexamethylene guanidine hydrochloride to DMF solvent is 3:7) are added, and the reaction is carried out for 4 hours to obtain an aqueous polyurethane liquid.

[0034] S3: On the setting machine, the dyed fabric woven from bamboo fiber and nylon yarn is dipped and rolled using the finishing agent obtained in step S2 at a pressure of 2 kgf / cm 2 The speed is 50 m / min, the liquid carrying rate is 60%, and it is dried at 165-175°C to obtain a wear-resistant special finishing bamboo brocade knitted single-sided fabric, in which the amount of the finishing agent is 30 g / L.

[0035] Example 3

[0036] A wear-resistant special bamboo brocade knitted single-sided fabric, the preparation method of which comprises the following steps:

[0037] S1: 15 parts of silica aerogel with a particle size of 100 μm and a porosity of 85% were added to 80 parts of polyethyleneimine, 50 parts of water were added to reduce the viscosity, stirred at 50° C., and then filtered to obtain silica aerogel impregnated with polyethyleneimine.

[0038] S2: 15 parts of silica aerogel impregnated with polyethyleneimine obtained in step S1 and 5 parts of heterocyclic polymer quaternary ammonium salt are dispersed under high-speed stirring for 50 minutes, and then 2 parts of graphene and 70 parts of aqueous polyurethane liquid are added to prepare a finishing agent.

[0039] The aqueous polyurethane liquid was prepared by the following method: 2 parts of dibutyltin dilaurate were added to 20 parts of polyethylene glycol, the temperature was raised to 70°C and then protected by nitrogen, 50 parts of isophorone diisocyanate were added and kept warm for 2 hours, 15 parts of N-hydroxymethyldiethanolamine were added and kept warm for 2 hours, the system temperature was lowered to 25°C, 10 parts of polyhexamethylene guanidine hydrochloride dissolved in DMF solvent (the mass ratio of polyhexamethylene guanidine hydrochloride to DMF solvent was 3:7) were added, and the reaction was carried out for 2.5 hours to obtain an aqueous polyurethane liquid.

[0040] S3: On the setting machine, the dyed fabric woven from bamboo fiber and nylon yarn is dipped and rolled using the finishing agent obtained in step S2 at a pressure of 3 kgf / cm 2 The speed is 50 m / min, the liquid carrying rate is 70%, and it is dried at 165-175°C to obtain a wear-resistant special finishing bamboo brocade knitted single-sided fabric, in which the amount of the finishing agent is 30 g / L.

[0041] Example 4

[0042] The difference between this embodiment and embodiment 1 is that the amount of the finishing agent prepared in step S2 used in step S3 is 50 g / L.

[0043] Example 5

[0044] The difference between this embodiment and embodiment 1 is that the amount of the finishing agent prepared in step S2 used in step S3 is 75 g / L.

[0045] Example 6

[0046] The difference between this embodiment and embodiment 1 is that the amount of the finishing agent prepared in step S2 used in step S3 is 100 g / L.

[0047] Comparative Example 1

[0048] The difference between this comparative example and Example 1 is that conventional aqueous polyurethane is used to replace the aqueous polyurethane liquid in step S2 to prepare the finishing agent.

[0049] According to GB / T 4802.2-2008 “Determination of pilling properties of textile fabrics Part 2: Modified Martindale method”, the samples were dry-abraded for 40,000 times. The test results are shown in Table 1.

[0050] Table 1 Test results

[0051]

[0052] As shown in Table 1, the bamboo brocade knitted single-sided fabric provided by Examples 1 to 6 of the present invention can obtain excellent wear resistance after being treated with the TX-60 finishing agent. After 40,000 dry Martindale abrasion tests, the fabric has no wear-through, no broken yarn, and no obvious pilling phenomenon on the surface. The water-based polyurethane liquid in the TX-60 finishing agent is synthesized from isocyanate, polyether polyol, small molecule chain extender and end-capping agent. The polyurethane molecule contains a large amount of carbamate and urea groups, and has excellent film-forming properties, wear resistance, strong adhesion and excellent mechanical properties. The water-based polyurethane polymer can form a mesh structure with a certain degree of cross-linking with the fiber structure, which can effectively prevent the generation of defects such as hooking and holes during mechanical processing, and plays a twisting role, thereby greatly improving the anti-pilling performance of the fabric.

[0053] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A wear-resistant special bamboo brocade knitted single-sided fabric, characterized in that: The preparation method comprises the following steps: S1: adding silica aerogel to polyethyleneimine, stirring and treating at 40-50° C., and then filtering to obtain silica aerogel infiltrated with polyethyleneimine; S2: The silica aerogel impregnated with polyethyleneimine obtained in step S1 and the high molecular weight quaternary ammonium salt are dispersed by high-speed stirring for 30 to 60 minutes, and then graphene and aqueous polyurethane liquid are added to prepare a finishing agent; S3: On a setting machine, the dyed fabric is padded and dried using the finishing agent obtained in step S2 to obtain a wear-resistant special-finished bamboo brocade knitted single-sided fabric.

2. The wear-resistant special bamboo brocade knitted single-sided fabric according to claim 1, characterized in that: The preparation method of the aqueous polyurethane liquid in step S2 is as follows: dibutyltin dilaurate is added to polyethylene glycol, the temperature is raised to 70°C and then protected by nitrogen, isophorone diisocyanate is added and kept warm for 1-2 hours, N-hydroxymethyldiethanolamine is added and kept warm for 1-2 hours, the system temperature is lowered to 20-25°C, polyhexamethyleneguanidine hydrochloride dissolved in DMF solvent is added, and the reaction is carried out for 3-4 hours to obtain an aqueous polyurethane liquid.

3. The wear-resistant special bamboo brocade knitted single-sided fabric according to claim 1, characterized in that: The silica aerogel in step S1 has a particle size of 20 to 100 μm and a porosity of ≥85%.

4. The wear-resistant special bamboo brocade knitted single-sided fabric according to claim 3, characterized in that: In step S1, the mass ratio of silica aerogel to polyethyleneimine is 15:

80.

5. The wear-resistant special bamboo brocade knitted single-sided fabric according to claim 1, characterized in that: The polymer quaternary ammonium salt is any one of an open-chain polymer quaternary ammonium salt, a heterocyclic polymer quaternary ammonium salt, and a dendritic polymer quaternary ammonium salt.

6. The wear-resistant special bamboo brocade knitted single-sided fabric according to claim 1, characterized in that: The weight ratio of polyethylene glycol, isophorone diisocyanate and N-hydroxymethyldiethanolamine is 20:50:

10.

7. The wear-resistant special bamboo brocade knitted single-sided fabric according to claim 1, characterized in that: The dosage of the finishing agent in step S3 is 30-100 g / L.

8. The wear-resistant special bamboo brocade knitted single-sided fabric according to claim 4, characterized in that: In step S3, a dipping and rolling process is adopted with a pressure of 1 to 3 kgf / cm 2 The vehicle speed is 40-50m / min and the liquid carrying rate is 60%-70%.

9. The wear-resistant special bamboo brocade knitted single-sided fabric according to claim 1, characterized in that: The dyed cloth in step S3 is woven from bamboo fiber and nylon yarn.

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