Anti-static super-clean clothes and application thereof

Abstract

The application discloses an antistatic super-clean garment and application thereof. The antistatic super-clean garment comprises a one-piece garment, sleeves, a hat and legs, the one-piece garment is composed of a fabric layer, a neck strap is arranged on the hat, the sleeves of the one-piece garment are provided with elastic cuffs, a zipper is arranged at the front end of the one-piece garment, and a hem is arranged below the legs. The fabric layer is a base cloth and a coating layer. The base cloth is polyester. The preparation raw materials of the coating layer comprise, by weight fraction, 5-20 parts of conductive inorganic particles, 40-70 parts of water-based resin and 1-10 parts of additives. The antistatic super-clean garment has excellent antistatic performance, the surface resistance value is as low as 0.4*10 6 , the friction electrostatic voltage is as low as 20 V, and the antistatic performance fully meets the antistatic performance standard in GB / T 24249-2009 antistatic clean fabric. In addition, the antistatic super-clean garment has excellent moisture permeability, and the problem of poor moisture permeability and hand feeling of the fabric in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of cleanroom textile technology, classified under D06M15 / 564, specifically to an antistatic cleanroom garment and its application. Background Technology

[0002] Current antistatic cleanroom garments are made of fabrics woven from polyester or nylon filaments, using a tight fabric structure to shield dust particles generated by the human body.

[0003] There are two main methods for preparing antistatic cleanroom garments: (1) using grafted modified fibers, hydrophilic fibers and textile fibers to blend and interweave. This method is mainly aimed at improving the moisture absorption of the fabric. It can only reduce the resistance and friction voltage of the fabric in a humid environment. In addition, the surface resistance and friction voltage of this fabric are weakly reduced, and the antistatic performance is greatly affected by humidity. (2) coating the fabric surface with an antistatic agent. This treatment method has the effect of significantly reducing friction voltage. However, the moisture permeability and hand feel of the fabric are poor.

[0004] Cleanrooms typically use air conditioning to control the temperature at 20-24℃ and the relative humidity at 40-60%. This is not a problem in the dry winter, but in the humid summer, especially when there are many people in the cleanroom, the relative humidity often approaches or even exceeds 60%. Cleanroom suits with low moisture permeability will make the operators feel very stuffy and damp.

[0005] Patent CN107059398B discloses a coating adhesive for polyester cleanroom garment fabric and its preparation method. It mainly uses an acrylic-modified polyurethane emulsion to make the conductive fabric achieve antibacterial, antistatic, moisture-permeable, and breathable properties. However, its static voltage is as high as 876V, and its antistatic performance needs to be improved.

[0006] Patent CN105088402A discloses an antistatic fabric and its preparation method. The antistatic fabric, prepared from bamboo fiber, yew fiber, water-based amino acid-modified polyurethane, polyethylene glycol, and other components, exhibits a triboelectric voltage as high as 250-280V and a surface resistivity of 6.5-8×10⁻⁶. 6 Its antistatic properties still need improvement. Summary of the Invention

[0007] To address the aforementioned problems, a first aspect of the present invention provides an antistatic cleanroom garment, comprising a bodysuit and sleeves, a hood, and trouser legs disposed on the bodysuit. The bodysuit is composed of a fabric layer, the hood is equipped with a neck strap, the sleeves of the bodysuit are equipped with elastic cuffs, the front of the bodysuit is provided with a zipper, and the trouser legs are provided with cuffs. The fabric layer consists of a base fabric and a coating. The base fabric is polyester. The raw materials for preparing the coating, by weight, include: 5-20 parts of conductive inorganic particles, 40-70 parts of water-based resin, and 1-10 parts of additives.

[0008] More preferably, the raw materials for preparing the coating, by weight, include: 5-15 parts of conductive inorganic particles, 50-60 parts of water-based resin, and 2-7 parts of additives.

[0009] More preferably, the raw materials for preparing the coating, by weight, include: 10 parts of conductive inorganic particles, 55 parts of water-based resin, and 6 parts of additives.

[0010] Preferably, the conductive inorganic particles are antimony tin oxide and aluminum-doped zinc dioxide.

[0011] Preferably, the mass ratio between the antimony tin oxide and the aluminum-doped zinc dioxide is (3-6):(1-4).

[0012] More preferably, the mass ratio between the antimony tin oxide and the aluminum-doped zinc dioxide is (4-5):(1-2).

[0013] More preferably, the mass ratio of the antimony tin oxide and the aluminum-doped zinc dioxide is 4:2.

[0014] Preferably, the average particle size of the antimony tin oxide is 10-100 nm, wherein the molar percentage of antimony dioxide is 5-10%.

[0015] More preferably, the antimony tin oxide has a particle size of 50-100 nm, wherein the molar percentage of antimony dioxide is 8-10%.

[0016] More preferably, the antimony tin oxide has a particle size of 80-100 nm, wherein the molar percentage of antimony dioxide is 10%.

[0017] Preferably, the particle size of the aluminum-doped zinc dioxide is 30-70 nm.

[0018] More preferably, the particle size of the aluminum-doped zinc dioxide is 40-60 nm.

[0019] More preferably, the particle size of the aluminum-doped zinc dioxide is 50 nm.

[0020] Preferably, the waterborne resin is a waterborne polyurethane resin.

[0021] Preferably, the waterborne polyurethane resin has a mass fraction of 5-15%.

[0022] More preferably, the waterborne polyurethane resin has a mass fraction of 7-12%.

[0023] More preferably, the waterborne polyurethane resin has a mass fraction of 10%.

[0024] Preferably, the additive is chitosan and polyethylene glycol in a mass ratio of (1-3):1.

[0025] More preferably, the additive is chitosan and polyethylene glycol in a mass ratio of (1-2):1.

[0026] More preferably, the additive is chitosan and polyethylene glycol in a mass ratio of 2:1.

[0027] Preferably, the number-average molecular weight of the chitosan is 10,000-50,000, and the average molecular weight of the polyethylene glycol is 400-700.

[0028] More preferably, the number-average molecular weight of the chitosan is 10,000-30,000, and the average molecular weight of the polyethylene glycol is 500-700.

[0029] More preferably, the number-average molecular weight of the chitosan is 10,000-20,000, and the average molecular weight of the polyethylene glycol is 560-660.

[0030] This invention also provides a method for preparing a fabric layer, comprising the following steps: adding conductive inorganic particles, aqueous resin, and additives to a stirrer according to weight parts, stirring at a stirring speed of 700-900 rpm / min for 2-4 hours to obtain a coating; then immersing a base fabric in a 1-2 mol / L sodium hydroxide solution for 1-2 hours, washing with distilled water, and drying to obtain a pretreated base fabric; and then applying the coating to the pretreated base fabric by a scraping method (scraper thickness 1.5 mm), with a coating amount of 10-20 g / m². 2 After baking at 100-120℃ for 2-4 minutes, the fabric layer is obtained; the base fabric is 75D 1 / 2 twill polyester fabric.

[0031] A second aspect of the present invention provides an application of antistatic cleanroom garments in cleanrooms.

[0032] The applicant discovered that simply mixing nano-tin antimony oxide, aluminum-doped zinc oxide, and polyurethane actually increased the surface resistance and triboelectric voltage of the fabric. This may be because the three components did not form a honeycomb or network structure. After extensive research, the applicant found that limiting the particle sizes of nano-tin antimony oxide and aluminum-doped zinc oxide to 80-100 nm and 50 nm, respectively, not only reduced the surface resistance of the fabric but also further reduced the triboelectric voltage. However, this resulted in a stiffer feel. Based on this, the applicant further limited the mass fraction of polyurethane resin to 7-12%, which not only made the fabric feel soft and full but also unexpectedly increased the surface resistance of the fabric to 10. 6 Ω, static voltage <30V, it is possible that the polyurethane resin at this mass fraction can increase the proportion of antistatic effective components per unit area of ​​the fabric, making it easier to form a conductive circuit. With the joint action of chitosan, the problem of increased fabric weight and hardened hand feel caused by too low a mass fraction of polyurethane resin is avoided. Furthermore, limiting the molar percentage of antimony dioxide in nano-tin antimony oxide to 5-10% can prevent lattice distortion of nano-tin antimony oxide, which would affect the antistatic performance of the cleanroom garment.

[0033] Generally, the higher the average molecular weight of polyethylene glycol (PEG), the more ether oxygen bonds in the molecule, and the better the moisture absorption performance of the fabric. However, in this application, the average molecular weight of PEG is too high, which actually reduces the moisture absorption performance of the fabric. This may be because PEG affects the degree of hydrogen bonding of the NH groups in polyurethane, thus reducing the film-forming properties of the coating and consequently affecting the antistatic properties of the fabric. Therefore, the applicant only added PEG with an average molecular weight of 500-700 to avoid the problem of reduced film-forming properties of the coating. However, simply adding PEG still needs to improve the moisture absorption performance of the fabric. Based on this, chitosan with a number-average molecular weight of 10,000-20,000 was further added, and the mass ratio of the two was limited to (1-2):1. This not only avoided the problem of the high molecular weight of chitosan affecting the feel of the fabric and improved its moisture permeability, but also unexpectedly improved the antistatic ability of the fabric. It is possible that in an environment with humidity greater than 60%, the hydrophilic and polar groups contained in the fabric adsorb more moisture from the air, accelerating the leakage of static charge. The excellent hygroscopicity of polyethylene glycol with an average molecular weight of 500-700 and chitosan with a number-average molecular weight of 10,000-20,000 further accelerated the leakage of static charge.

[0034] Beneficial effects: The antistatic cleanroom garment disclosed in this invention has excellent antistatic properties, with a surface resistivity as low as 0.4 × 10⁻⁶. 6The triboelectric voltage is as low as 20V, fully meeting the antistatic performance standard of GB / T 24249-2009 for antistatic cleanroom fabrics. In addition, the excellent moisture permeability of the antistatic cleanroom garment solves the problem of poor moisture permeability and hand feel of existing fabrics, making it suitable for cleanrooms with relative humidity exceeding 60% without causing operators to feel stuffy. Furthermore, the antistatic cleanroom garment of this invention has a soft hand feel and is comfortable against the skin. It can also be applied to controlled environments with dust-free and antistatic properties in industries such as electronics, optical instruments, pharmaceuticals, microbial engineering, and precision instruments. Example

[0035] Example 1

[0036] An antistatic cleanroom garment includes a bodysuit and sleeves, a hood, and trouser legs attached to the bodysuit. The bodysuit is composed of a fabric layer. The hood has a neck strap. The sleeves of the bodysuit have elastic cuffs. The front of the bodysuit has a zipper. The trouser legs have cuffs. The fabric layer consists of a base fabric and a coating. The base fabric is polyester. The raw materials for preparing the coating, by weight, include: 10 parts of conductive inorganic particles, 55 parts of water-based resin, and 6 parts of additives.

[0037] The conductive inorganic particles are antimony tin oxide and aluminum-doped zinc dioxide, with a mass ratio of 4:2. The antimony dioxide in the antimony tin oxide has a molar percentage of 10% and an average particle size of 80-100 nm. It was purchased from Ningbo Beigaer New Materials Co., Ltd., model B-ATO-80N. The aluminum-doped zinc dioxide has an average particle size of 50 nm and an aluminum oxide molar percentage of 2%. It was purchased from Shanghai Xiangtian Nanomaterials Co., Ltd., model XT-AZO-02.

[0038] The waterborne resin is a waterborne polyurethane resin with a mass fraction of 10%, purchased from Dow Chemical Company, USA, and model Coreactant CR 3A.

[0039] The additives are chitosan and polyethylene glycol in a mass ratio of 2:1. The chitosan has a number average molecular weight of 10,000-20,000 and was purchased from Qingdao Honghai Biotechnology Co., Ltd. The polyethylene glycol is polyethylene glycol-600 with an average molecular weight of 560-660 and was purchased from Haian Petrochemical Plant in Jiangsu Province.

[0040] This invention also provides a method for preparing a fabric layer, comprising the following steps: adding conductive inorganic particles, aqueous resin, and additives to a stirrer according to weight parts, stirring for 3 hours at a stirring speed of 800 rpm / min to obtain a coating; then immersing a base fabric in a 1-2 mol / L sodium hydroxide solution for 2 hours, washing with distilled water, and drying to obtain a pretreated base fabric; and then applying the coating to the pretreated base fabric by a scraping method (scraper thickness 1.5 mm), with a coating amount of 15 g / m². 2 After baking at 110℃ for 3 minutes, the fabric layer is obtained; the base fabric is 75D 1 / 2 twill polyester fabric.

[0041] A second aspect of the present invention provides an application of antistatic cleanroom garments in cleanrooms.

[0042] Example 2

[0043] An antistatic cleanroom garment includes a bodysuit and sleeves, a hood, and trouser legs attached to the bodysuit. The bodysuit is composed of a fabric layer. The hood has a neck strap. The sleeves of the bodysuit have elastic cuffs. The front of the bodysuit has a zipper. The trouser legs have cuffs. The fabric layer consists of a base fabric and a coating. The base fabric is polyester. The raw materials for preparing the coating, by weight, include: 20 parts of conductive inorganic particles, 60 parts of water-based resin, and 7 parts of additives.

[0044] The conductive inorganic particles are antimony tin oxide and aluminum-doped zinc dioxide, with a mass ratio of 4:2. The antimony dioxide in the antimony tin oxide has a molar percentage of 10% and an average particle size of 80-100 nm. It was purchased from Ningbo Beigaer New Materials Co., Ltd., model B-ATO-80N. The aluminum-doped zinc dioxide has an average particle size of 50 nm and an aluminum oxide molar percentage of 2%. It was purchased from Shanghai Xiangtian Nanomaterials Co., Ltd., model XT-AZO-02.

[0045] The waterborne resin is a waterborne polyurethane resin with a mass fraction of 10%, purchased from Dow Chemical Company, USA, and model Coreactant CR 3A.

[0046] The additives are chitosan and polyethylene glycol in a mass ratio of 2:1. The chitosan has a number average molecular weight of 10,000-20,000 and was purchased from Qingdao Honghai Biotechnology Co., Ltd. The polyethylene glycol is polyethylene glycol-600 with an average molecular weight of 560-660 and was purchased from Haian Petrochemical Plant in Jiangsu Province.

[0047] This invention also provides a method for preparing a fabric layer, comprising the following steps: adding conductive inorganic particles, aqueous resin, and additives to a stirrer according to weight parts, stirring for 3 hours at a stirring speed of 800 rpm / min to obtain a coating; then immersing a base fabric in a 1-2 mol / L sodium hydroxide solution for 2 hours, washing with distilled water, and drying to obtain a pretreated base fabric; and then applying the coating to the pretreated base fabric by a scraping method (scraper thickness 1.5 mm), with a coating amount of 15 g / m². 2 After baking at 110℃ for 3 minutes, the fabric layer is obtained; the base fabric is 75D 1 / 2 twill polyester fabric.

[0048] A second aspect of the present invention provides an application of antistatic cleanroom garments in cleanrooms.

[0049] Example 3

[0050] An antistatic cleanroom garment includes a bodysuit and sleeves, a hood, and trouser legs attached to the bodysuit. The bodysuit is composed of a fabric layer. The hood has a neck strap. The sleeves of the bodysuit have elastic cuffs. The front of the bodysuit has a zipper. The trouser legs have cuffs. The fabric layer consists of a base fabric and a coating. The base fabric is polyester. The raw materials for preparing the coating, by weight, include: 5 parts of conductive inorganic particles, 50 parts of water-based resin, and 3 parts of additives.

[0051] The conductive inorganic particles are antimony tin oxide and aluminum-doped zinc dioxide, with a mass ratio of 4:2. The antimony dioxide in the antimony tin oxide has a molar percentage of 10% and an average particle size of 80-100 nm. It was purchased from Ningbo Beigaer New Materials Co., Ltd., model B-ATO-80N. The aluminum-doped zinc dioxide has an average particle size of 50 nm and an aluminum oxide molar percentage of 2%. It was purchased from Shanghai Xiangtian Nanomaterials Co., Ltd., model XT-AZO-02.

[0052] The waterborne resin is a waterborne polyurethane resin with a mass fraction of 10%, purchased from Dow Chemical Company, USA, and model Coreactant CR 3A.

[0053] The additives are chitosan and polyethylene glycol in a mass ratio of 2:1. The chitosan has a number average molecular weight of 10,000-20,000 and was purchased from Qingdao Honghai Biotechnology Co., Ltd. The polyethylene glycol is polyethylene glycol-600 with an average molecular weight of 560-660 and was purchased from Haian Petrochemical Plant in Jiangsu Province.

[0054] This invention also provides a method for preparing a fabric layer, comprising the following steps: adding conductive inorganic particles, aqueous resin, and additives to a stirrer according to weight parts, stirring for 3 hours at a stirring speed of 800 rpm / min to obtain a coating; then immersing a base fabric in a 1-2 mol / L sodium hydroxide solution for 2 hours, washing with distilled water, and drying to obtain a pretreated base fabric; and then applying the coating to the pretreated base fabric by a scraping method (scraper thickness 1.5 mm), with a coating amount of 15 g / m². 2 After baking at 110℃ for 3 minutes, the fabric layer is obtained; the base fabric is 75D 1 / 2 twill polyester fabric.

[0055] A second aspect of the present invention provides an application of antistatic cleanroom garments in cleanrooms.

[0056] Comparative Example 1

[0057] An antistatic cleanroom garment includes a bodysuit and sleeves, a hood, and trouser legs attached to the bodysuit. The bodysuit is composed of a fabric layer. The hood has a neck strap. The sleeves of the bodysuit have elastic cuffs. The front of the bodysuit has a zipper. The trouser legs have cuffs. The fabric layer consists of a base fabric and a coating. The base fabric is polyester. The raw materials for preparing the coating, by weight, include: 10 parts of conductive inorganic particles, 40 parts of water-based resin, and 6 parts of additives.

[0058] The conductive inorganic particles are antimony tin oxide and aluminum-doped zinc dioxide, with a mass ratio of 4:2. The antimony dioxide in the antimony tin oxide has a molar percentage of 10% and an average particle size of 80-100 nm. It was purchased from Ningbo Beigaer New Materials Co., Ltd., model B-ATO-80N. The aluminum-doped zinc dioxide has an average particle size of 50 nm and an aluminum oxide molar percentage of 2%. It was purchased from Shanghai Xiangtian Nanomaterials Co., Ltd., model XT-AZO-02.

[0059] The waterborne resin is a waterborne polyurethane resin with a mass fraction of 20%, purchased from Dow Chemical Company, USA, and model Coreactant CR 3A.

[0060] The additives are chitosan and polyethylene glycol in a mass ratio of 2:1. The chitosan has a number average molecular weight of 10,000-20,000 and was purchased from Qingdao Honghai Biotechnology Co., Ltd. The polyethylene glycol is polyethylene glycol-600 with an average molecular weight of 560-660 and was purchased from Haian Petrochemical Plant in Jiangsu Province.

[0061] This invention also provides a method for preparing a fabric layer, comprising the following steps: adding conductive inorganic particles, aqueous resin, and additives to a stirrer according to weight parts, stirring for 3 hours at a stirring speed of 800 rpm / min to obtain a coating; then immersing a base fabric in a 1-2 mol / L sodium hydroxide solution for 2 hours, washing with distilled water, and drying to obtain a pretreated base fabric; and then applying the coating to the pretreated base fabric by a scraping method (scraper thickness 1.5 mm), with a coating amount of 15 g / m². 2 After baking at 110℃ for 3 minutes, the fabric layer is obtained; the base fabric is 75D 1 / 2 twill polyester fabric.

[0062] A second aspect of the present invention provides an application of antistatic cleanroom garments in cleanrooms.

[0063] Comparative Example 2

[0064] An antistatic cleanroom garment includes a bodysuit and sleeves, a hood, and trouser legs attached to the bodysuit. The bodysuit is composed of a fabric layer. The hood has a neck strap. The sleeves of the bodysuit have elastic cuffs. The front of the bodysuit has a zipper. The trouser legs have cuffs. The fabric layer consists of a base fabric and a coating. The base fabric is polyester. The raw materials for preparing the coating, by weight, include: 10 parts of conductive inorganic particles, 55 parts of water-based resin, and 6 parts of additives.

[0065] The conductive inorganic particles are antimony tin oxide and aluminum-doped zinc dioxide, with a mass ratio of 4:2. The antimony dioxide in the antimony tin oxide has a molar percentage of 10% and an average particle size of 10-20 nm. It was purchased from Hangzhou Hengge Nanotechnology Co., Ltd., model HN-G06. The aluminum-doped zinc dioxide has an average particle size of 80 nm and an aluminum oxide molar percentage of 2%. It was purchased from Shanghai Xiangtian Nanomaterials Co., Ltd., model XT-AZO-03.

[0066] The waterborne resin is a waterborne polyurethane resin with a mass fraction of 10%, purchased from Dow Chemical Company, USA, and model Coreactant CR 3A.

[0067] The additives are chitosan and polyethylene glycol in a mass ratio of 2:1. The chitosan has a number average molecular weight of 10,000-20,000 and was purchased from Qingdao Honghai Biotechnology Co., Ltd. The polyethylene glycol is polyethylene glycol-600 with an average molecular weight of 560-660 and was purchased from Haian Petrochemical Plant in Jiangsu Province.

[0068] This invention also provides a method for preparing a fabric layer, comprising the following steps: adding conductive inorganic particles, aqueous resin, and additives to a stirrer according to weight parts, stirring for 3 hours at a stirring speed of 800 rpm / min to obtain a coating; then immersing a base fabric in a 1-2 mol / L sodium hydroxide solution for 2 hours, washing with distilled water, and drying to obtain a pretreated base fabric; and then applying the coating to the pretreated base fabric by a scraping method (scraper thickness 1.5 mm), with a coating amount of 15 g / m². 2 After baking at 110℃ for 3 minutes, the fabric layer is obtained; the base fabric is 75D 1 / 2 twill polyester fabric.

[0069] A second aspect of the present invention provides an application of antistatic cleanroom garments in cleanrooms.

[0070] Comparative Example 3

[0071] An antistatic cleanroom garment includes a bodysuit and sleeves, a hood, and trouser legs attached to the bodysuit. The bodysuit is composed of a fabric layer. The hood has a neck strap. The sleeves of the bodysuit have elastic cuffs. The front of the bodysuit has a zipper. The trouser legs have cuffs. The fabric layer consists of a base fabric and a coating. The base fabric is polyester. The raw materials for preparing the coating, by weight, include: 5 parts of conductive inorganic particles, 50 parts of water-based resin, and 3 parts of additives.

[0072] The conductive inorganic particles are antimony tin oxide and aluminum-doped zinc dioxide, with a mass ratio of 4:2. The antimony dioxide in the antimony tin oxide has a molar percentage of 10% and an average particle size of 80-100 nm. It was purchased from Ningbo Beigaer New Materials Co., Ltd., model B-ATO-80N. The aluminum-doped zinc dioxide has an average particle size of 50 nm and an aluminum oxide molar percentage of 2%. It was purchased from Shanghai Xiangtian Nanomaterials Co., Ltd., model XT-AZO-02.

[0073] The waterborne resin is a waterborne polyurethane resin with a mass fraction of 10%, purchased from Dow Chemical Company, USA, and model Coreactant CR 3A.

[0074] The additives are chitosan and polyethylene glycol in a mass ratio of 4:1. The chitosan has a number average molecular weight of 10,000-20,000 and was purchased from Qingdao Honghai Biotechnology Co., Ltd. The polyethylene glycol is polyethylene glycol-800 with an average molecular weight of 720-880 and was purchased from Haian Petrochemical Plant in Jiangsu Province.

[0075] This invention also provides a method for preparing a fabric layer, comprising the following steps: adding conductive inorganic particles, aqueous resin, and additives to a stirrer according to weight parts, stirring for 3 hours at a stirring speed of 800 rpm / min to obtain a coating; then immersing a base fabric in a 1-2 mol / L sodium hydroxide solution for 2 hours, washing with distilled water, and drying to obtain a pretreated base fabric; and then applying the coating to the pretreated base fabric by a scraping method (scraper thickness 1.5 mm), with a coating amount of 15 g / m². 2 After baking at 110℃ for 3 minutes, the fabric layer is obtained; the base fabric is 75D 1 / 2 twill polyester fabric.

[0076] A second aspect of the present invention provides an application of antistatic cleanroom garments in cleanrooms.

[0077] Comparative Example 4

[0078] An antistatic cleanroom garment includes a bodysuit and sleeves, a hood, and trouser legs attached to the bodysuit. The bodysuit is composed of a fabric layer. The hood has a neck strap. The sleeves of the bodysuit have elastic cuffs. The front of the bodysuit has a zipper. The trouser legs have cuffs. The fabric layer consists of a base fabric and a coating. The base fabric is polyester. The raw materials for preparing the coating, by weight, include: 10 parts of conductive inorganic particles, 55 parts of water-based resin, and 10 parts of additives.

[0079] The conductive inorganic particles are antimony tin oxide and aluminum-doped zinc dioxide, with a mass ratio of 4:2. The antimony dioxide in the antimony tin oxide has a molar percentage of 10% and an average particle size of 80-100 nm. It was purchased from Ningbo Beigaer New Materials Co., Ltd., model B-ATO-80N. The aluminum-doped zinc dioxide has an average particle size of 50 nm and an aluminum oxide molar percentage of 2%. It was purchased from Shanghai Xiangtian Nanomaterials Co., Ltd., model XT-AZO-02.

[0080] The waterborne resin is a waterborne polyurethane resin with a mass fraction of 10%, purchased from Dow Chemical Company, USA, and model Coreactant CR 3A.

[0081] The additive is polyethylene glycol, specifically polyethylene glycol-600, with an average molecular weight of 560-660, purchased from Haian Petrochemical Plant in Jiangsu Province.

[0082] This invention also provides a method for preparing a fabric layer, comprising the following steps: adding conductive inorganic particles, aqueous resin, and additives to a stirrer according to weight parts, stirring for 3 hours at a stirring speed of 800 rpm / min to obtain a coating; then immersing a base fabric in a 1-2 mol / L sodium hydroxide solution for 2 hours, washing with distilled water, and drying to obtain a pretreated base fabric; and then applying the coating to the pretreated base fabric by a scraping method (scraper thickness 1.5 mm), with a coating amount of 15 g / m². 2 After baking at 110℃ for 3 minutes, the fabric layer is obtained; the base fabric is 75D 1 / 2 twill polyester fabric.

[0083] A second aspect of the present invention provides an application of antistatic cleanroom garments in cleanrooms.

[0084] Performance Evaluation

[0085] (1) Moisture permeability test: The moisture permeability of the antistatic cleanroom garments of Examples 1-3 and Comparative Examples 1-4 was tested in accordance with the test standard GB / T12704-2009.

[0086] (2) Surface resistance test: The surface resistance of the antistatic cleanroom garments of Examples 1-3 and Comparative Examples 1-4 was tested in accordance with the test standard GB / T 12014-2009.

[0087] (3) Triboelectric voltage test: The triboelectric voltage of the antistatic cleanroom garments of Examples 1-3 and Comparative Examples 1-4 was tested in accordance with the test standard GB / T 12703-91.

[0088] Table 1

[0089] Test Project <![CDATA[Water vapor permeability (g / m 2 ·24 h)]]> Surface resistance (Ω) Triboelectric voltage (V) Example 1 4579 <![CDATA[0.4×10 6 ]]> 20 Example 2 4467 <![CDATA[0.6×10 6 ]]> 22 Example 3 4460 <![CDATA[0.7×10 6 ]]> 24 Comparative Example 1 4290 <![CDATA[1.0×10 7 ]]> 34 Comparative Example 2 4460 <![CDATA[1.8×10 7 ]]> 37 Comparative Example 3 4140 <![CDATA[2.3×10 7 ]]> 41 Comparative Example 4 4033 <![CDATA[2.0×10 7 ]]> 39

Claims

1. An antistatic cleanroom garment, comprising a bodysuit and sleeves, a hood, and trouser legs disposed on the bodysuit, the bodysuit being composed of a fabric layer, the hood being provided with a neck strap, the sleeves of the bodysuit being provided with elastic cuffs, the front of the bodysuit being provided with a zipper, and the trouser legs being provided with cuffs at the bottom. The fabric layer consists of a base fabric and a coating; The base fabric is polyester; the raw materials for preparing the coating, by weight, include: 10 parts of conductive inorganic particles, 55 parts of water-based resin, and 6 parts of additives. The conductive inorganic particles are antimony tin oxide and aluminum-doped zinc dioxide, with a mass ratio of 4:

2. The molar percentage of antimony dioxide in the antimony tin oxide is 10%, and the average particle size is 80-100 nm. The aluminum-doped zinc dioxide has an average particle size of 50 nm, and the molar percentage of alumina in the aluminum-doped zinc dioxide is 2%. The waterborne resin is a waterborne polyurethane resin, and the mass fraction of the waterborne polyurethane resin is 10%. The additive is chitosan and polyethylene glycol in a mass ratio of 2:1; the number average molecular weight of the chitosan is 10,000 to 20,000.

2. The application of the antistatic cleanroom garment according to claim 1 in a cleanroom.