Antistatic fabric and preparation method thereof

Abstract

The present application relates to the field of fabrics, and specifically discloses an antistatic fabric and a preparation method thereof. The antistatic fabric includes the following raw materials in parts by weight: 10-20 parts of soy protein solution, 70-85 parts of polymer solution, 3-8 parts of antistatic agent, 1-4 parts of hydrophilic colloid solution, 0.8-2 parts of coupling agent, and 2-5 parts of water-soluble alcohol polymer. The preparation method of the antistatic fabric comprises the following steps: uniformly dispersing the antistatic agent into the water-soluble alcohol polymer and the coupling agent to obtain a mixed solution; the soy protein solution, the mixed solution and the hydrophilic colloid solution are made into a spinning solution; the polymer solution and the spinning solution are electrospun in parallel to obtain spun fibers; the spun fibers are woven to obtain antistatic fabric. The obtained antistatic fabric has excellent antistatic performance and wrinkle resistance. After being washed with soapy water 100 times, the fabric still has excellent antistatic effect and good wrinkle resistance.

Description

Technical Field

[0001] The present invention relates to the field of fabrics, and more specifically, to an antistatic fabric and a preparation method thereof. Background Art

[0002] Currently, synthetic fibers, yarns, or fabrics are prone to static electricity during processing and use due to friction and other factors. Static-charged fibers easily attract dust, forming dirt. During processing, the attraction or repulsion of charges can complicate processing. During spinning, static electricity can cause poor fiber cohesion, entanglement, and breakage, hindering smooth spinning. When the accumulated static voltage exceeds 500V, it can easily cause sparks and fires.

[0003] Traditional antistatic fabrics are generally ordinary polyester fibers or fabrics with antistatic agents applied to the surface, that is, an electrostatic layer formed by coating the fabric with conductive particles to prevent static electricity from accumulating on the fibers. However, the antistatic effect of this antistatic fabric easily disappears after washing and friction, and the antistatic performance is poor. Summary of the Invention

[0004] In order to improve the antistatic effect of the fabric, and the antistatic effect of the fabric is not easy to disappear after multiple washing and friction, the present application provides an antistatic fabric and a preparation method thereof.

[0005] In the first aspect, the present application provides an anti-static fabric, which adopts the following technical solution:

[0006] An antistatic fabric comprises the following raw materials in parts by weight: 10-20 parts of soybean protein solution, 70-85 parts of polymer solution, 3-8 parts of antistatic agent, 1-4 parts of hydrophilic colloid solution, 0.8-2 parts of coupling agent, and 2-5 parts of water-soluble alcohol polymer.

[0007] Furthermore, the polymer solution includes one of a polylactic acid solution, a polyester solution, and a polyamide solution.

[0008] Furthermore, the hydrophilic colloid solution includes one of a gelatin aqueous solution, an arabic gum aqueous solution, and a xanthan gum aqueous solution.

[0009] Furthermore, the antistatic agent includes at least one of nano zinc oxide and polyetherimide.

[0010] Furthermore, the antistatic agent is a mixture of zinc oxide and polyetherimide.

[0011] Furthermore, the water-soluble alcohol polymer is polyethylene glycol and / or polyvinyl alcohol solution.

[0012] Furthermore, the water-soluble alcohol polymer is a mixture of polyethylene glycol and polyvinyl alcohol solution.

[0013] Furthermore, the coupling agent is selected from one of vinyl silane coupling agent, acrylic silane coupling agent, methacrylic silane coupling agent and epoxy silane coupling agent.

[0014] In a second aspect, the present application provides a method for preparing an antistatic fabric, which adopts the following technical solution:

[0015] A method for preparing an antistatic fabric comprises the following steps:

[0016] uniformly dispersing the antistatic agent into the water-soluble alcohol polymer and the coupling agent to obtain a mixed solution;

[0017] The soybean protein solution, the mixed solution and the hydrophilic colloid solution are prepared into a spinning solution;

[0018] The polymer solution and the spinning solution are electrospun in parallel to obtain spinning fibers;

[0019] The spun fibers are woven to obtain antistatic fabrics.

[0020] In summary, this application has the following beneficial effects:

[0021] 1. In the present application, an antistatic agent is uniformly dispersed into a water-soluble alcohol polymer and a coupling agent to obtain a mixed solution; the soy protein solution, the mixed solution and the hydrophilic colloid solution are prepared into a spinning solution; the antistatic agent can give the spun fiber excellent antistatic properties, and the coupling agent is beneficial to improving the compatibility and dispersibility between the various raw material components, so that the spinning solution and the polymer solution can be effectively combined during the electrospinning process, thereby improving the quality of the spun fiber.

[0022] 2. The water-soluble alcohol polymer can not only make the spun fiber softer and more comfortable, but the hydrophilic colloid solution can also adjust the viscosity of the system so that the spinning solution becomes a fluid with viscoelasticity, which is conducive to spinning. The combination of the two can not only make the spinning solution form a stable, uniform and continuous system, but also improve the hydrophilic and hygroscopic properties of the fabric, and further improve the antistatic properties of the fabric, so that the fabric still has excellent antistatic effect after multiple washing and friction, thereby improving the long-term antistatic ability of the fabric.

[0023] 3. The polymer solution and the spinning solution are electrospun in parallel to obtain spun fibers, and the spun fibers are woven to obtain anti-static fabrics. This not only overcomes the defect in the prior art that the anti-static effect of the fabric is weakened or even disappears after washing and friction by directly coating the anti-static agent on the surface of the fabric, but also has long-lasting wrinkle resistance. DETAILED DESCRIPTION

[0024] The embodiments of the present invention will be described in detail below with reference to the examples. However, those skilled in the art will understand that the following examples are only used to illustrate the present invention and should not be construed as limiting the scope of the present invention. Specific conditions not specified in the examples are carried out according to conventional conditions or conditions recommended by the manufacturer. Reagents or instruments used without indicating the manufacturer are all conventional products that can be purchased commercially.

[0025] The technical solution of this application is:

[0026] The dosage of each raw material component in the antistatic fabric is as follows: 10-20 parts of soybean protein solution, 70-85 parts of polymer solution, 3-8 parts of antistatic agent, 1-4 parts of hydrophilic colloid solution, 0.8-2 parts of coupling agent, and 2-5 parts of water-soluble alcohol polymer.

[0027] The preparation method of antistatic fabric comprises the following steps:

[0028] uniformly dispersing the antistatic agent into the water-soluble alcohol polymer and the coupling agent to obtain a mixed solution;

[0029] The soybean protein solution, the mixed solution and the hydrophilic colloid solution are prepared into a spinning solution;

[0030] The polymer solution and the spinning solution are electrospun in parallel to obtain spinning fibers;

[0031] The spun fibers are woven to obtain antistatic fabrics.

[0032] The parallel electrospinning method described in the present application is a parallel multi-fluid electrospinning technology, so that the formed spun fibers have multiple independent functions.

[0033] In this application, the antistatic agent is uniformly dispersed into the water-soluble alcohol polymer and the coupling agent to obtain a mixed solution; the soy protein solution, the mixed solution and the hydrophilic colloid solution are prepared into a spinning solution; the antistatic agent can give the spun fiber excellent antistatic properties, and the coupling agent is beneficial to improving the compatibility and dispersibility between the various raw material components, so that the spinning solution and the polymer solution can be effectively combined during the electrospinning process, thereby improving the quality of the spun fiber.

[0034] The water-soluble alcohol polymer can not only make the spun fiber softer and more comfortable, but the hydrophilic colloid solution can also adjust the viscosity of the system so that the spinning solution becomes a fluid with viscoelasticity, which is conducive to spinning. The combination of the two can not only make the spinning solution form a stable, uniform and continuous system, but also improve the hydrophilic and hygroscopic properties of the fabric, and further improve the antistatic properties of the fabric, so that the fabric still has excellent antistatic effect after multiple washing and friction, thereby improving the long-term antistatic ability of the fabric.

[0035] The polymer solution and the spinning solution are electrospun in parallel to obtain spun fibers, and the spun fibers are woven into anti-static fabrics. This not only overcomes the defect in the prior art that the antistatic agent is directly coated on the surface of the fabric, which weakens or even disappears the antistatic effect of the fabric after washing and friction, but also has a long-lasting antistatic effect. In addition, it was found in the test process that the obtained anti-static fabric also has excellent wrinkle resistance.

[0036] Furthermore, the polymer solution includes one of a polylactic acid solution, a polyester solution, and a polyamide solution. The polymer solution is formed by dissolving the corresponding polymer powder or particles in the corresponding solvent to form a solution, which is common knowledge in the art and will not be described in detail in this application.

[0037] Polylactic acid solution, polyester solution, and polyamide solution can all be effectively combined with the spinning solution during the electrospinning process to form spun fibers. The resulting spun fibers not only have excellent strength and elasticity, ensuring the mechanical properties of the fabric, but also effectively improve the comfort, wrinkle resistance, and antistatic properties of the fabric, so that the fabric still has excellent antistatic effects after multiple washings and frictions.

[0038] Furthermore, the hydrophilic colloid solution comprises one of a gelatin aqueous solution, an arabic gum aqueous solution, and a xanthan gum aqueous solution. As a further preferred technical solution, the hydrophilic colloid solution is a gelatin aqueous solution; generally, the mass concentration of the gelatin aqueous solution is 4-8%, the mass concentration of the arabic gum aqueous solution is 5-10%, and the mass concentration of the xanthan gum aqueous solution is 1-3%. Optimizing the composition of the hydrophilic colloid solution and selecting an appropriate mass concentration can further improve the spinnability of the spinning solution.

[0039] Furthermore, the antistatic agent comprises at least one of nano zinc oxide and aromatic polyimide. Preferably, the antistatic agent is a mixture of zinc oxide and aromatic polyimide, with the weight ratio of zinc oxide to aromatic polyimide being 1:(0.3-1), with the optimal weight ratio being 1:1. The zinc oxide is preferably nano zinc oxide. When combined with other raw material components, nano zinc oxide can effectively improve the washability of the fabric, enhance the long-term effectiveness of its antistatic effect, and impart excellent wrinkle resistance to the fabric.

[0040] Furthermore, the water-soluble alcohol polymer is polyethylene glycol and / or polyvinyl alcohol solution. The water-soluble alcohol polymer can be polyethylene glycol or polyvinyl alcohol solution, or a mixture of polyethylene glycol and polyvinyl alcohol solution. Experimental studies have found that when the weight ratio of polyethylene glycol 400 to polyvinyl alcohol solution is 2:1-1.5, the fabric performance is better.

[0041] Furthermore, the coupling agent is selected from one of vinyl silane coupling agent, acrylic silane coupling agent, methacrylic silane coupling agent and epoxy silane coupling agent.

[0042] Optimize the selection of coupling agent components, improve the dispersibility and interfacial bonding between components, and at the same time make the spinning solution compatible with other raw material components, thereby jointly improving the comprehensive performance of the fabric.

[0043] Example

[0044] Example 1

[0045] The amounts of the raw material components in the antistatic fabric are as follows: 1 kg of soybean protein solution, 8.5 kg of polyester solution, 0.3 kg of antistatic agent, 0.1 kg of xanthan gum aqueous solution, 0.08 kg of vinyl silane coupling agent, and 0.5 kg of water-soluble alcohol polymer; the antistatic agent is zinc oxide with a particle size of 5-10 μm, and the water-soluble alcohol polymer is polyethylene glycol 400;

[0046] The preparation method of antistatic fabric comprises the following steps:

[0047] The antistatic agent is evenly dispersed in the water-soluble alcohol polymer and the vinyl silane coupling agent at a stirring speed of 400 r / min for 5 minutes to obtain a mixed solution;

[0048] The soybean protein solution, the mixed solution and the hydrophilic colloid solution are prepared into a spinning solution;

[0049] The polymer solution and the spinning solution are fed into an electrospinning machine, and a parallel multi-fluid electrospinning method is adopted to obtain spun fibers; the spun fibers are woven to obtain antistatic fabrics.

[0050] Example 2

[0051] The amounts of the raw material components in the antistatic fabric are as follows: 2 kg of soybean protein solution, 7 kg of polyamide solution, 0.8 kg of antistatic agent, 0.4 kg of gum arabic aqueous solution, 0.2 kg of epoxy silane coupling agent, and 0.2 kg of water-soluble alcohol polymer; the antistatic agent is polyetherimide, and the water-soluble alcohol polymer is polyvinyl alcohol;

[0052] The preparation method of the antistatic fabric is the same as that in Example 1.

[0053] Example 3

[0054] The difference from Example 1 is that the amounts of the raw material components in the antistatic fabric are as follows: 1.5 kg of soy protein solution, 7.8 kg of polylactic acid solution, 0.5 kg of nano zinc oxide, 0.1 kg of polyetherimide, 0.12 kg of gum arabic aqueous solution, 0.1 kg of xanthan gum aqueous solution, 0.2 kg of acrylic silane coupling agent, 0.1 kg of polyethylene glycol, and 0.25 kg of polyvinyl alcohol;

[0055] The rest are the same as in Example 1.

[0056] Example 4

[0057] The difference from Example 3 is that the hydrophilic colloid solution is 0.22 kg of gelatin aqueous solution, and the rest is the same as Example 3.

[0058] Example 5

[0059] The difference from Example 4 is that the water-soluble alcohol polymer is 0.2 kg of polyethylene glycol and 0.15 kg of polyvinyl alcohol, and the rest is the same as Example 4.

[0060] Example 6

[0061] The difference from Example 4 is that the water-soluble alcohol polymer is 0.3 kg of polyethylene glycol and 0.05 kg of polyvinyl alcohol, and the rest is the same as Example 4.

[0062] Example 7

[0063] The difference from Example 5 is that the antistatic agents are 0.12 kg of nano zinc oxide and 0.48 kg of polyetherimide, and the rest are the same as Example 5.

[0064] Example 8

[0065] The difference from Example 5 is that the antistatic agent is 0.3 kg of nano zinc oxide and 0.3 kg of polyetherimide, and the rest is the same as Example 5.

[0066] Comparative Example

[0067] Comparative Example 1

[0068] The difference from Example 8 is that no hydrophilic colloid solution is added, and the rest is the same as Example 8.

[0069] Comparative Example 2

[0070] The difference from Example 8 is that the water-soluble alcohol polymer is replaced by ethanol in equal amounts, and the rest is the same as Example 8.

[0071] Comparative Example 3

[0072] The difference from Example 8 is that the method for preparing the antistatic fabric comprises the following steps: uniformly mixing the raw material components, wet spinning to obtain spun fibers, and weaving the spun fibers to obtain the antistatic fabric. The raw material components and amounts of the antistatic fabric are the same as those in Example 8.

[0073] Comparative Example 4

[0074] The difference from Example 8 is that the antistatic agent is replaced by carbon black in equal amount, and the rest is the same as Example 8.

[0075] Comparative Example 5

[0076] The difference from Example 8 is that common commercially available anti-static fabric is used, and the fabric composition and content are as follows: surface: 100% polyester, bottom: 98.4% polyester and 1.6% electrostatic fiber.

[0077] Performance testing

[0078] The fabric products of Examples 1-8 and Comparative Examples 1-5 were subjected to a washing test: the washing conditions were as follows: a 50 cm × 50 cm fabric was soaked in 500 mL of soapy water, with 5 g of soap per liter of soapy water, and then washed at a speed of 1000 rpm for 10 minutes. After washing, the fabric was dried. This was considered one wash cycle. After 100 cycles of washing, the following performance tests were performed:

[0079] According to the national standard GB / T 12703.4-2010 “Evaluation of electrostatic properties of textiles Part 4: Resistivity”, the surface resistance was measured before washing and after washing 100 times;

[0080] Using an electromagnetic induction voltage tester, according to the IEST-RP-CC standard, the friction voltage of the same fabric was measured at three different locations. The average of the three measurements was taken to determine the friction voltage before and after 100 washes.

[0081] According to the ISO2313 series of international standards "Textiles - Determination of Crease Recovery Angle", a fully automatic fabric wrinkle elasticity tester is used to measure the recovery of textiles after creases, expressed as the crease recovery angle. The crease recovery angle is measured before washing and after washing 100 times. The larger the recovery angle, the better the wrinkle resistance.

[0082] Table 1 Performance test results of fabrics before washing

[0083] Surface resistance / Ω Friction voltage / V Crease recovery angle / ° Example 1 <![CDATA[8.7*10 5 ]]> 136 158 Example 2 <![CDATA[7.8*10 5 ]]> 129 155 Example 3 <![CDATA[6.3*10 5 ]]> 118 160 Example 4 <![CDATA[6.1*10 5 ]]> 116 164 Example 5 <![CDATA[5.9*10 5 ]]> 110 170 Example 6 <![CDATA[6.2*10 5 ]]> 115 163 Example 7 <![CDATA[5.1*10 5 ]]> 102 167 Example 8 <![CDATA[4.3*10 5 ]]> 93 172 Comparative Example 1 <![CDATA[3.8*10 6 ]]> 174 121 Comparative Example 2 <![CDATA[1.5*10 6 ]]> 152 144 Comparative Example 3 <![CDATA[9.8*10 5 ]]> 142 149 Comparative Example 4 <![CDATA[8.5*10 5 ]]> 130 156 Comparative Example 5 <![CDATA[3.2*10 6 ]]> 161 136

[0084] Table 2 Performance test results of fabrics after washing 100 times

[0085]

[0086]

[0087] In combination with Examples 1-8 and Tables 1 and 2, it can be seen that the antistatic fabric obtained using the raw material components and the specific preparation method of the present application has excellent antistatic performance and wrinkle resistance. After 100 times of washing with soapy water, the surface resistance and friction voltage of the fabric do not change much, and the crease recovery angle can still maintain a large value. It can be seen that the fabric has excellent long-term antistatic properties and good wrinkle resistance.

[0088] Combining Example 8 and Comparative Examples 1-2 and combining Tables 1 and 2, it can be seen that no hydrophilic colloid solution is added in Comparative Example 1, and the water-soluble alcohol polymer is directly replaced with ethanol in Comparative Example 2. The antistatic performance of the fabric obtained in Comparative Example 1 is significantly reduced, and the wrinkle resistance is further reduced. This is because the water-soluble alcohol polymer can not only make the spun fiber softer and more comfortable, but the hydrophilic colloid solution can adjust the viscosity of the system so that the spinning solution becomes a fluid with viscoelasticity, which is conducive to spinning. The combination of the two can not only form a stable, uniform and continuous system for the spinning solution, but also improve the hydrophilic and hygroscopic properties of the fabric, and further improve the antistatic and anti-wrinkle properties of the fabric, so that the fabric still has excellent antistatic effect and good wrinkle resistance after multiple washing and friction.

[0089] From Example 8 and Comparative Example 3 and Tables 1 and 2, it can be seen that the spun fibers obtained by wet spinning cannot obtain a stable and uniform spinning system due to the differences between the components. Even if the raw material components of Comparative Example 3 are spun, the quality of the spun fibers is reduced. After long-term washing and friction, the obtained fabric cannot maintain long-term antistatic and anti-wrinkle effects.

[0090] Combining Example 8 and Comparative Example 4 and Tables 1 and 2, it can be seen that the present application uses organic and inorganic substances for effective combination, that is, a specific proportion of nano zinc oxide and polyetherimide. Compared with the carbon black generally used as an antistatic agent in the prior art, the fabric obtained in Comparative Example 4 is only slightly lower than the fabric product of Example 8 in terms of antistatic effect before washing, but the components of the present application, in combination with other raw materials, can effectively improve the fabric after multiple washing and friction, and still have good antistatic and anti-wrinkle effects, while the comprehensive performance of the fabric product of Comparative Example 4 is significantly reduced after washing.

[0091] Combining Example 8 and Comparative Example 5 and combining Tables 1 and 2, it can be seen that the antistatic fabric obtained in the present application has excellent antistatic performance and wrinkle resistance, and after being washed with soapy water 100 times, it can still maintain excellent antistatic and anti-wrinkle effects.

[0092] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. An antistatic fabric, characterized in that: The invention comprises the following raw materials in parts by weight: 10-20 parts of soybean protein solution, 70-85 parts of polymer solution, 3-8 parts of antistatic agent, 1-4 parts of hydrophilic colloid solution, 0.8-2 parts of coupling agent, and 2-5 parts of water-soluble alcohol polymer; the antistatic agent is a mixture of zinc oxide and polyetherimide in a weight ratio of 1:(0.3-1); The water-soluble alcohol polymer is a mixture of polyethylene glycol and polyvinyl alcohol solution in a mass ratio of 2: (1-1.5); The polymer solution includes one of a polylactic acid solution, a polyester solution, and a polyamide solution; the hydrophilic colloid solution includes one of a gelatin aqueous solution, an arabic gum aqueous solution, and a xanthan gum aqueous solution; The preparation method of the antistatic fabric comprises the following steps: uniformly dispersing the antistatic agent into a water-soluble alcohol polymer and a coupling agent to obtain a mixed solution; preparing a spinning solution by mixing soybean protein solution, the mixed solution and a hydrophilic colloid solution; The polymer solution and the spinning solution are electrospun in parallel to obtain spun fibers; and the spun fibers are woven to obtain antistatic fabrics.

2. The antistatic fabric according to claim 1, characterized in that: The coupling agent is selected from one of vinyl silane coupling agent, acrylic silane coupling agent, methyl acrylic silane coupling agent and epoxy silane coupling agent.

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