WO2022116973A1 - High-dust-holding capacity and electrostatic dissipation glass fiber filter material, and preparation method therefor - Google Patents

High-dust-holding capacity and electrostatic dissipation glass fiber filter material, and preparation method therefor Download PDF

Info

Publication number
WO2022116973A1
WO2022116973A1 PCT/CN2021/134516 CN2021134516W WO2022116973A1 WO 2022116973 A1 WO2022116973 A1 WO 2022116973A1 CN 2021134516 W CN2021134516 W CN 2021134516W WO 2022116973 A1 WO2022116973 A1 WO 2022116973A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
glass fiber
fiber
slurry
filter material
Prior art date
Application number
PCT/CN2021/134516
Other languages
French (fr)
Chinese (zh)
Inventor
王莹
高政
郭晓蓓
项朝卫
陈晓燕
胡晓侠
张剑
代丰
张瀚洋
Original Assignee
南京玻璃纤维研究设计院有限公司
中材科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 南京玻璃纤维研究设计院有限公司, 中材科技股份有限公司 filed Critical 南京玻璃纤维研究设计院有限公司
Publication of WO2022116973A1 publication Critical patent/WO2022116973A1/en

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/38—Inorganic fibres or flakes siliceous
    • D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/02—Methods of beating; Beaters of the Hollander type
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/46—Non-siliceous fibres, e.g. from metal oxides
    • D21H13/50—Carbon fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

Definitions

  • the invention relates to the technical field of glass fiber filter materials, in particular to a high dust-holding capacity, static dissipative glass fiber filter material and a preparation method thereof.
  • hydrofluoric acid is used in the production of electronic products. Hydrofluoric acid is volatile and reacts with the boron element in the glass fiber wool. The generated boron fluoric acid is deposited on the surface of electronic components, which will cause breakdown of electronic components. .
  • GB12158 stipulates that the surface resistivity of electrostatic conductors is equal to or less than 1 ⁇ 10 7 ⁇ , the surface resistivity of electrostatic subconductors is 1 ⁇ 10 7 ⁇ 1 ⁇ 10 11 ⁇ , and the surface resistivity of electrostatic non-conductors is equal to or greater than 1 ⁇ 10 11 ⁇ .
  • Electromechanical systems such as purifying air conditioners are an important means to ensure that the air cleanliness of electronic product production workshops meets the specified requirements.
  • Glass fiber filter material has extremely high filtration efficiency, excellent chemical stability and low resistance, and is the preferred filter material for purifying air conditioners
  • the existing ordinary glass fiber has no anti-static function, is not resistant to moisture, has high boron content, low dust holding capacity, and has a low service life when used for air purification in electronic product production workshops.
  • the purpose of the present invention is to provide a high-dust-holding, static-dissipative glass fiber filter material and a preparation method thereof.
  • the glass fiber filter material of the present invention has high dust-holding capacity, anti-static, anti-moisture, long service life, and is especially suitable for electronic products Dust filter in production workshop.
  • a high-dust-holding, static-dissipative glass fiber filter material comprising an upper layer, a middle layer and a lower layer, the upper layer is a large aperture layer, the thickness is 0.2-0.3 mm, and the average aperture is 18-50 ⁇ m;
  • the fiber layer has a thickness of 0.1 to 0.2 mm and an average pore diameter of 8 to 20 ⁇ m;
  • the lower layer is a small pore size layer with a thickness of 0.1 to 0.2 mm and an average pore diameter of 1 to 9 ⁇ m;
  • the upper layer, the middle layer and the lower layer are composed of fibers of each layer. After pulping, the pulp is distributed through a three-layer headbox, dehydrated and dried to form.
  • the substrates of the large aperture layer are glass fiber wool and chopped glass fibers with a boron oxide content of less than 2%, and the mass ratio of the glass fiber wool to the chopped glass fibers is (40-92):(2-60).
  • the base material of the electricity-releasing fiber layer is glass fiber wool and chopped glass fibers with a boron oxide content of less than 2%, and electricity-releasing fibers; the mass ratio of glass fiber wool, electricity-releasing fibers, and chopped glass fibers is: ( 40 ⁇ 92):(2 ⁇ 40):(0 ⁇ 20).
  • the electricity-releasing fibers are at least one of carbon fibers, steel fibers, copper fibers or nickel fibers, and the electricity-releasing fibers have a diameter of 2-8 ⁇ m and a length of 2-15 mm.
  • the base material of the small aperture layer is glass fiber wool and chopped glass fiber with a boron oxide content of less than 2%, and the mass ratio of the glass fiber cotton and chopped glass fiber is: (75 ⁇ 98): (2 ⁇ 15) .
  • the preparation method of the above-mentioned high-dust-tolerant and static-dissipative glass fiber filter material comprises the following steps:
  • Distributing pulp in headbox transport each layer of pulp prepared in step 6.1 to the upper, middle and lower layers of the three-layer headbox respectively, so that the pulp of the small aperture layer is evenly distributed in the wire part at a concentration of 0.1-0.2wt% In the bottom layer, the slurry of the electricity-releasing fiber layer is evenly distributed in the upper layer of the small aperture layer with a concentration of 0.1-0.2wt%, and the slurry of the large-aperture layer is evenly distributed in the upper layer of the electricity-releasing fiber layer with a concentration of 0.2-0.3wt%, forming a three-layer structure. Structured wet paper sheets;
  • Drying Wet paper with moisture content of 55-75% is multi-cylinder drying or air-dried to form glass fiber filter material with moisture content of 0.2-1.5%.
  • the headbox distributing step also includes the steps of filtering and diluting with water the large-aperture layer fiber slurry, the electricity-releasing fiber layer slurry and the small-aperture layer slurry in step 6.2, respectively.
  • the slurry is diluted with water to a concentration of 0.2-0.3 wt %
  • the electricity-releasing fiber layer slurry is diluted with water to a concentration of 0.1-0.2 wt %
  • the small pore size layer slurry is diluted with water to a concentration of 0.1-0.2 wt %.
  • a sizing step is also included, and the adhesive is applied to the wet paper sheet by a curtain type or a spray type, and the adhesive agent accounts for 2-9% of the total mass of the absolutely dry fibers.
  • the adhesive is at least one of pure acrylic emulsion, silane-modified acrylic emulsion, polyvinyl alcohol or melamine emulsion.
  • the drying step also includes the step of applying a waterproofing agent, and when the moisture content of the wet paper sheet is 10-25 wt%, a fluorocarbon, silicone or environmentally friendly PFOA-free waterproofing agent is applied, and the waterproofing agent accounts for 0.5% of the total mass of the dry fiber. ⁇ 2%.
  • the glass fiber filter material of the present invention has a three-layer structure, the windward surface layer is a large pore size layer with an average pore size of 18-50 ⁇ m, the middle layer is a charge-releasing fiber layer with an average pore size of 8-20 ⁇ m, and the air outlet surface layer is an average pore size layer.
  • the middle layer is the charge-releasing fiber layer. Since the charge-releasing fibers can eliminate or dissipate static electricity, the charged particles passing through the charge-releasing fiber layer are not charged or have very little charge under the action of the charge-releasing fibers, thereby reducing the amount of electrons. The generation of static electricity in the production workshop of the product.
  • the glass fiber filter material of the present invention is formed by pulping each layer of fibers separately and then distributing the pulp through a three-layer headbox, dehydrating and drying.
  • the pulping conditions of each layer of fibers are controlled respectively to obtain three kinds of pulps with different beating degrees and concentrations, and three-layer headbox is used for pulping.
  • Enhancement effect, under the action of pressure and tension, the fibers of each layer are embedded in each other in the vertical direction, forming a multi-layer filter material with a gradient structure.
  • the multi-layer headbox is used to manufacture the filter material with tighter bonding between the fibers of each layer, more continuous transition of the joint, higher moisture removal efficiency, and not easy to delaminate.
  • the glass fiber filter material of the present invention adopts boron-free or low-boron glass fiber cotton and chopped glass fiber, which can reduce the probability that the glass fiber filter material reacts with hydrofluoric acid to generate borofluoric acid, and prevents the generation of boron.
  • the deposition of fluoric acid on the surface of electronic components causes breakdown failure of electronic components.
  • the application of the waterproofing agent can make the glass fiber filter material of the present invention have better moisture resistance, adapt to the working conditions of the electronic product production workshop, and improve the service life of the filter material.
  • FIG. 1 is a schematic diagram showing the structure of the high-dust-holding, static-dissipative glass fiber filter material of the present invention.
  • the present embodiment provides a high-dust-holding, static-dissipative glass fiber filter material, which is composed of an upper layer 1, an intermediate layer 2 and a lower layer 3.
  • the upper layer 1 is a large pore size layer with a thickness of 0.2 mm and an average thickness of 0.2 mm.
  • the pore size is 19 ⁇ m;
  • the middle layer 2 is a charge-releasing fiber layer with a thickness of 0.1 mm and an average pore size of 10 ⁇ m;
  • the lower layer is a small pore size layer with a thickness of 0.1 mm and an average pore size of 8 ⁇ m.
  • the substrates of the large aperture layer are glass fiber wool and chopped glass fibers with a boron oxide content of 1.8%, and the mass ratio of the glass fiber wool to the chopped glass fibers is 40:4.
  • the base material of the charge-releasing fiber layer is glass fiber wool and charge-releasing fibers with a boron oxide content of 1.8%; the mass ratio of glass fiber wool and charge-releasing fibers is 40:2.
  • the electricity-releasing fibers are carbon fibers with a diameter of 2 ⁇ m and a length of 3 mm.
  • the base material of the small aperture layer is glass fiber wool and chopped glass fiber with a boron oxide content of 1.8%, and the mass ratio of the glass fiber wool and the chopped glass fiber is 75:15.
  • the glass fiber filter material preparation method of embodiment 1 is:
  • the wet paper sheet with three-layer structure is formed into a wet paper sheet with a moisture content of 55% after natural dehydration and vacuum dehydration;
  • This embodiment provides a high-dust-tolerant, static-dissipative glass fiber filter material, which is composed of an upper layer 1, an intermediate layer 2 and a lower layer 3, the upper layer 1 is a large aperture layer, the thickness is 0.25mm, and the average aperture is 30 ⁇ m;
  • the middle layer 2 is a charge-releasing fiber layer with a thickness of 0.12 mm and an average pore size of 15 ⁇ m;
  • the lower layer is a small pore size layer with a thickness of 0.12 mm and an average pore size of 5 ⁇ m.
  • the base material of the large aperture layer is glass fiber wool and chopped glass fiber with a boron oxide content of 1.6%, and the mass ratio of the glass fiber wool to the chopped glass fiber is 60:12.
  • the base material of the electricity-releasing fiber layer is glass fiber wool and electricity-releasing fibers with a boron oxide content of 1.6%; the mass ratio of the glass fiber wool and electricity-releasing fibers is 60:10, and the electricity-releasing fibers are 3 ⁇ m in diameter and 6 mm in length of steel fibers.
  • the base material of the small aperture layer is glass fiber wool and chopped glass fiber with a boron oxide content of 1.6%, and the mass ratio of the glass fiber wool and the chopped glass fiber is 80:12.
  • the glass fiber filter material preparation method of embodiment 2 is:
  • the fiber slurry of the large pore size layer is diluted with water to a concentration of 0.24wt%, the slurry of the electricity-releasing fiber layer is diluted with water to a concentration of 0.12wt%, and the slurry of the small pore size layer is diluted with water to a concentration of 0.12wt%;
  • each layer of pulp is transported to the upper, middle and lower layers of the three-layer headbox, and the pulp of the small aperture layer is evenly distributed on the bottom layer of the mesh at a concentration of 0.12wt%, and the electricity-releasing fibers
  • the layer slurry is uniformly distributed on the upper layer of the small pore size layer with a concentration of 0.12wt%, and the large pore size layer slurry is uniformly distributed on the upper layer of the charge-releasing fiber layer with a concentration of 0.24wt%, forming a wet paper sheet with a three-layer structure;
  • the wet paper sheet with three-layer structure is formed into a wet paper sheet with a moisture content of 65% after natural dehydration and vacuum dehydration;
  • This embodiment provides a high-dust-tolerant and static-dissipative glass fiber filter material, which is composed of an upper layer 1, an intermediate layer 2 and a lower layer 3, and the upper layer 1 is a large aperture layer with a thickness of 0.28 mm and an average aperture of 40 ⁇ m;
  • the middle layer 2 is a charge-releasing fiber layer with a thickness of 0.15 mm and an average pore size of 12 ⁇ m;
  • the lower layer is a small pore size layer with a thickness of 0.13 mm and an average pore size of 3 ⁇ m.
  • the base material of the large aperture layer is glass fiber wool and chopped glass fiber with a boron oxide content of 1.5%, and the mass ratio of the glass fiber wool to the chopped glass fiber is 80:35.
  • the base material of the charge-releasing fiber layer is glass fiber wool with boron oxide content of 1.5%, chopped glass fiber and charge-releasing fiber; the mass ratio of glass fiber wool, charge-releasing fiber and chopped glass fiber is 80:10:10.
  • the electricity-releasing fibers are copper fibers with a diameter of 5 ⁇ m and a length of 9 mm.
  • the base material of the small aperture layer is glass fiber wool and chopped glass fiber with a boron oxide content of 1.5%, and the mass ratio of the glass fiber wool and the chopped glass fiber is 85:10.
  • the glass fiber filter material preparation method of embodiment 3 is:
  • the fiber slurry of the large pore size layer is diluted with water to a concentration of 0.28wt%, the slurry of the electricity-releasing fiber layer is diluted with water to a concentration of 0.15wt%, and the slurry of the small pore size layer is diluted with water to a concentration of 0.13wt%;
  • the wet paper sheet with three-layer structure is formed into a wet paper sheet with a moisture content of 70% after natural dehydration and vacuum dehydration;
  • This embodiment provides a high-dust-tolerant, static-dissipative glass fiber filter material, which is composed of an upper layer 1, an intermediate layer 2 and a lower layer 3, and the upper layer 1 is a large aperture layer with a thickness of 0.3 mm and an average aperture of 48 ⁇ m;
  • the middle layer 2 is a charge-releasing fiber layer with a thickness of 0.2 mm and an average pore size of 20 ⁇ m;
  • the lower layer is a small pore size layer with a thickness of 0.2 mm and an average pore size of 1 ⁇ m.
  • the substrates of the large aperture layer are glass fiber wool and chopped glass fibers with a boron oxide content of 1.3%, and the mass ratio of the glass fiber wool to the chopped glass fibers is 92:60.
  • the base material of the charge-releasing fiber layer is glass fiber wool with boron oxide content of 1.3%, chopped glass fiber and charge-releasing fiber; the mass ratio of glass fiber wool, charge-releasing fiber, and chopped glass fiber is 92:40:2.
  • the electricity-releasing fibers are nickel fibers with a diameter of 8 ⁇ m and a length of 15 mm.
  • the substrates of the small aperture layer are glass fiber wool and chopped glass fibers with a boron oxide content of 1.3%, and the mass ratio of the glass fiber wool to the chopped glass fibers is 98:2.
  • the glass fiber filter material preparation method of embodiment 4 is:
  • the fiber slurry of the large pore size layer is diluted with water to a concentration of 0.3wt%, the slurry of the electricity-releasing fiber layer is diluted with water to a concentration of 0.2wt%, and the slurry of the small pore size layer is diluted with water to a concentration of 0.2wt%;
  • each layer of pulp is transported to the upper, middle and lower layers of the three-layer headbox, and the pulp of the small aperture layer is evenly distributed on the bottom layer of the mesh at a concentration of 0.2wt%, and the discharge fibers
  • the layer slurry is uniformly distributed on the upper layer of the small pore size layer with a concentration of 0.2wt%, and the large pore size layer slurry is uniformly distributed on the upper layer of the electricity-releasing fiber layer with a concentration of 0.3wt% to form a wet paper sheet with a three-layer structure;
  • the wet paper sheet with three-layer structure is formed into a wet paper sheet with a moisture content of 75% after natural dehydration and vacuum dehydration;
  • the commercially available filter material 1 is a F9W single-layer glass fiber filter material with a thickness of 0.4 mm.
  • the commercially available filter material 2 is an H11W single-layer glass fiber filter material with a thickness of 0.5 mm.
  • the commercially available filter material 3 is a 49W single-layer glass fiber filter material with a thickness of 0.55 mm.
  • the commercially available filter material 4 is an H14W single-layer glass fiber filter material with a thickness of 0.65 mm.
  • Example 1 88 65 Commercial filter material 1 88 82 Example 2 99 130 Commercial filter material 2 99 168 Example 3 99.99 260 Commercial filter media 3 99.99 350 Example 4 99.997 294 Commercial filter material 4 99.996 380
  • the filtration resistance of the glass fiber filter materials prepared in Examples 1 to 4 is 22% to 25% lower than that of the commercially available filter materials, and the dust holding capacity is lower than that of the commercially available filter materials.
  • the filter material is increased by 20% to 50%.
  • the glass fiber filter materials prepared in Examples 1 to 4 are all electrostatic subconductors, and the commercially available filter materials are all electrostatic nonconductors.
  • the glass fiber filter material prepared in Example 1 was used in the purification air-conditioning system of the electronic product production workshop, and the fan operating power of the purification air-conditioning system was reduced by about 10%; and the replacement cycle of the glass fiber filter material was extended from the original half a year to 8 More than a month, the number of electrostatic sparks in the workshop has dropped to about 50% of the original.

Abstract

A high-dust-holding capacity and electrostatic dissipation glass fiber filter material, comprising an upper surface layer (1), a middle layer (2) and a lower surface layer (3), wherein the upper surface layer (1) is a large-aperture layer having a thickness of 0.2-0.3 mm and an average aperture of 18-50 μm; the middle layer (2) is a pyroelectric fiber layer having a thickness of 0.1-0.2 mm and an average aperture of 8-20 μm; the lower surface layer (3) is a small-aperture layer having a thickness of 0.1-0.2 mm and an average aperture of 1-9 μm; and the upper surface layer (1), the middle layer (2) and the lower surface layer (3) are formed by respectively slurrying each layer of fibers followed by slurry distribution through a three-layer headbox, dehydrating, and drying. The glass fiber filter material, which has a three-layer gradient aperture structure, has a high dust holding capacity and is resistant to layering, and charged particles passing through the pyroelectric fiber layer are not charged or carry extremely few charges under the action of pyroelectric fibers, so that the generation of static electricity in an electronic product production workshop is reduced.

Description

一种高容尘、静电耗散玻纤滤材及其制备方法A kind of high dust-holding, static dissipative glass fiber filter material and preparation method thereof 技术领域technical field
本发明涉及玻璃纤维滤材技术领域，具体涉及一种高容尘量、静电耗散玻纤滤材及其制备方法。The invention relates to the technical field of glass fiber filter materials, in particular to a high dust-holding capacity, static dissipative glass fiber filter material and a preparation method thereof.
背景技术Background technique
随着半导体、光电子行业的飞速发展，电子产品的生产车间对防静电及空气洁净度的要求越来越高，空气洁净度度不达标会直接对产品造成污染，影响产品的性能、成品率、可靠性及寿命。静电的存在将引起介质击穿，导致器件损坏，且易引发火灾爆炸等事故。静电对人体也有害无利，静电可吸附空气中的大量尘埃，累积有毒物质和病菌，长期在静电辐射下会使人焦躁不安、头痛、胸闷、呼吸困难，引发支气管哮喘和心律失常等病症。With the rapid development of the semiconductor and optoelectronic industries, the production workshops of electronic products have higher and higher requirements for anti-static and air cleanliness. If the air cleanliness does not meet the standard, it will directly cause pollution to the products and affect the performance, yield, and air quality of the products. reliability and longevity. The presence of static electricity will cause dielectric breakdown, resulting in device damage, and easily lead to fire and explosion accidents. Static electricity is also harmful to the human body. Static electricity can absorb a large amount of dust in the air and accumulate toxic substances and bacteria. Long-term exposure to static electricity will make people restless, headache, chest tightness, and difficulty breathing, causing bronchial asthma and arrhythmia.
为了减小静电的产生，电子生产车间的静电防护设计中明确规定，环境湿度不低于50％；在不对产品造成损害的前提下，允许用增湿设备喷洒制剂或水。另外电子产品的生产会使用氢氟酸，氢氟酸挥发易，与玻璃纤维棉中的硼元素发生反应，生成的硼氟酸沉积在电子元器件的表面，会造成电子元器件的击穿失效。GB12158中规定静电导体的表面电阻率等于或小于1×10 7Ω，静电亚导体的表面电阻率为1×10 7～1×10 11Ω，静电非导体表面电阻率等于或大于1×10 11Ω。 In order to reduce the generation of static electricity, it is clearly stipulated in the electrostatic protection design of the electronic production workshop that the environmental humidity is not less than 50%; on the premise of not causing damage to the product, it is allowed to spray the preparation or water with humidifying equipment. In addition, hydrofluoric acid is used in the production of electronic products. Hydrofluoric acid is volatile and reacts with the boron element in the glass fiber wool. The generated boron fluoric acid is deposited on the surface of electronic components, which will cause breakdown of electronic components. . GB12158 stipulates that the surface resistivity of electrostatic conductors is equal to or less than 1×10 7 Ω, the surface resistivity of electrostatic subconductors is 1×10 7 ～1×10 11 Ω, and the surface resistivity of electrostatic non-conductors is equal to or greater than 1×10 11 Ω.
净化空调等机电系统是保证电子产品生产车间空气洁净度达到规定要求的重要手段，玻璃纤维滤材具有极高的过滤效率、优良的化学稳定性和较低的阻力，是净化空调首选的过滤材料，但是现有普通玻璃纤维不具有防静电功能，不耐湿，硼元素含量高，容尘量低，用于电子产品生产车间的空气净化时使用寿命低。Electromechanical systems such as purifying air conditioners are an important means to ensure that the air cleanliness of electronic product production workshops meets the specified requirements. Glass fiber filter material has extremely high filtration efficiency, excellent chemical stability and low resistance, and is the preferred filter material for purifying air conditioners However, the existing ordinary glass fiber has no anti-static function, is not resistant to moisture, has high boron content, low dust holding capacity, and has a low service life when used for air purification in electronic product production workshops.
发明内容SUMMARY OF THE INVENTION
本发明的目的是提供一种高容尘量、静电耗散玻纤滤材及其制备方法，本发明的玻纤滤材容尘量高、抗静电、抗湿，使用寿命长，特别适用于电子产品生产车间的除尘过滤。The purpose of the present invention is to provide a high-dust-holding, static-dissipative glass fiber filter material and a preparation method thereof. The glass fiber filter material of the present invention has high dust-holding capacity, anti-static, anti-moisture, long service life, and is especially suitable for electronic products Dust filter in production workshop.
本发明采用的技术方案是：The technical scheme adopted in the present invention is:
一种高容尘、静电耗散玻纤滤材，包括上面层、中间层及下面层，所述上面层为大孔径层，厚度为0.2～0.3mm，平均孔径为18～50μm；中间层为释电纤维层，厚度为0.1～0.2mm，平均孔径为8～20μm；下面层为小孔径层，厚度为0.1～0.2mm，平均孔径为1～9μm；上面层、中间层及下面层由各层纤维分别制浆后通过三层流浆箱布浆，脱水干燥成形。A high-dust-holding, static-dissipative glass fiber filter material, comprising an upper layer, a middle layer and a lower layer, the upper layer is a large aperture layer, the thickness is 0.2-0.3 mm, and the average aperture is 18-50 μm; The fiber layer has a thickness of 0.1 to 0.2 mm and an average pore diameter of 8 to 20 μm; the lower layer is a small pore size layer with a thickness of 0.1 to 0.2 mm and an average pore diameter of 1 to 9 μm; the upper layer, the middle layer and the lower layer are composed of fibers of each layer. After pulping, the pulp is distributed through a three-layer headbox, dehydrated and dried to form.
进一步地，大孔径层的基材为氧化硼含量小于2％的玻璃纤维棉及短切玻璃纤维，玻璃纤维棉与短切玻璃纤维的质量比为(40～92):(2～60)。Further, the substrates of the large aperture layer are glass fiber wool and chopped glass fibers with a boron oxide content of less than 2%, and the mass ratio of the glass fiber wool to the chopped glass fibers is (40-92):(2-60).
进一步地，释电纤维层的基材为氧化硼含量小于2％的玻璃纤维棉和短切玻璃纤维，以及释电纤维；玻璃纤维棉、释电纤维、短切玻璃纤维的质量比为：(40～92):(2～40):(0～20)。Further, the base material of the electricity-releasing fiber layer is glass fiber wool and chopped glass fibers with a boron oxide content of less than 2%, and electricity-releasing fibers; the mass ratio of glass fiber wool, electricity-releasing fibers, and chopped glass fibers is: ( 40～92):(2～40):(0～20).
更进一步地，所述释电纤维为碳纤维、钢纤维、铜纤维或镍纤维中的至少一种，释电纤维的直径为2～8μm，长度为2～15mm。Furthermore, the electricity-releasing fibers are at least one of carbon fibers, steel fibers, copper fibers or nickel fibers, and the electricity-releasing fibers have a diameter of 2-8 μm and a length of 2-15 mm.
进一步地，小孔径层的基材为氧化硼含量小于2％的玻璃纤维棉及短切玻璃纤维，玻璃纤维棉和短切玻璃纤维的质量比为：(75～98):(2～15)。Further, the base material of the small aperture layer is glass fiber wool and chopped glass fiber with a boron oxide content of less than 2%, and the mass ratio of the glass fiber cotton and chopped glass fiber is: (75～98): (2～15) .
上述高容尘、静电耗散玻纤滤材的制备方法，包括以下步骤：The preparation method of the above-mentioned high-dust-tolerant and static-dissipative glass fiber filter material comprises the following steps:
6.1、制浆：6.1. Pulping:
制备大孔径层浆料，将玻璃纤维棉与短切玻璃纤维按质量比(40～92):(2～60)分散在水中，调节体系PH为2.5～4.5时打浆疏解，得到叩解度为10～34°SR，浓度为0.9～1.4wt％的悬浮液；Prepare large-aperture layer slurry, disperse glass fiber wool and chopped glass fiber in water according to the mass ratio (40-92): (2-60), adjust the pH of the system to 2.5-4.5, beat and dissolve, and obtain a beating degree of 10 ~34°SR, a suspension with a concentration of 0.9 to 1.4 wt%;
制备释电纤维层浆料，将玻璃纤维棉、释电纤维、短切玻璃纤维按质量比：(40～92):(2～40):(0～20)分散在水中，调节体系PH为2.5～4.5时打浆疏解，得到叩解度为15～39°SR，浓度为0.9～1.4wt％的悬浮液；Prepare electricity-releasing fiber layer slurry, disperse glass fiber wool, electricity-releasing fiber and chopped glass fiber in water according to the mass ratio: (40～92):(2～40):(0～20), and adjust the pH of the system to be At 2.5 to 4.5, beating and dissolving to obtain a suspension with a beating degree of 15-39°SR and a concentration of 0.9-1.4wt%;
制备小孔径层浆料，玻璃纤维棉和短切玻璃纤维按质量比：(75～98):(2～15)分散在水中，调节体系PH为2.5～4.5时打浆疏解，得到叩解度为35～70°SR，浓度为0.9～1.4wt％的悬浮液；Prepare small pore size layer slurry, glass fiber wool and chopped glass fiber are dispersed in water according to the mass ratio: (75～98):(2～15), and when the pH of the system is adjusted to 2.5～4.5, beating and dispersing are obtained to obtain a beating degree of 35 ~70°SR, a suspension with a concentration of 0.9 to 1.4 wt%;
6.2、流浆箱布浆：将步骤6.1制备的各层浆料分别输送至三层流浆箱的上、中、下层，使小孔径层浆料以0.1～0.2wt％浓度均匀分布在网部底层，释电纤维层浆料以0.1～0.2wt％浓度均匀分布在小孔径层的上层，大孔径层浆料以0.2～0.3wt％浓度均匀分布在释电纤维层的上层，形成具有三层结构的湿纸页；6.2. Distributing pulp in headbox: transport each layer of pulp prepared in step 6.1 to the upper, middle and lower layers of the three-layer headbox respectively, so that the pulp of the small aperture layer is evenly distributed in the wire part at a concentration of 0.1-0.2wt% In the bottom layer, the slurry of the electricity-releasing fiber layer is evenly distributed in the upper layer of the small aperture layer with a concentration of 0.1-0.2wt%, and the slurry of the large-aperture layer is evenly distributed in the upper layer of the electricity-releasing fiber layer with a concentration of 0.2-0.3wt%, forming a three-layer structure. Structured wet paper sheets;
6.3、脱水成形：三层结构的湿纸页经自然脱水和抽真空脱水后形成含水率55～75％的湿纸页；6.3. Dehydration forming: the wet paper sheet with three-layer structure is naturally dehydrated and vacuum dewatered to form a wet paper sheet with a moisture content of 55-75%;
6.4、干燥：含水率55～75％的湿纸页经多缸干燥或空气干燥后形成含水率0.2～1.5％的玻纤滤材。6.4. Drying: Wet paper with moisture content of 55-75% is multi-cylinder drying or air-dried to form glass fiber filter material with moisture content of 0.2-1.5%.
进一步地，流浆箱布浆步骤前还包括，分别将步骤6.2中的大孔径层纤维浆料、释电纤维层浆料和小孔径层浆料进行过滤和加水稀释的步骤，大孔径层纤维浆料加水稀释至0.2～0.3wt％浓度，释电纤维层浆料加水稀释至0.1～0.2wt％浓度，小孔径层浆料加水稀释至0.1～0.2wt％浓度。Further, before the headbox distributing step, it also includes the steps of filtering and diluting with water the large-aperture layer fiber slurry, the electricity-releasing fiber layer slurry and the small-aperture layer slurry in step 6.2, respectively. The slurry is diluted with water to a concentration of 0.2-0.3 wt %, the electricity-releasing fiber layer slurry is diluted with water to a concentration of 0.1-0.2 wt %, and the small pore size layer slurry is diluted with water to a concentration of 0.1-0.2 wt %.
进一步地，干燥步骤前还包括施胶的步骤，采用帘式或喷射式将胶粘剂施加到湿纸页上，胶粘剂占绝干纤维总质量的2～9％。Further, before the drying step, a sizing step is also included, and the adhesive is applied to the wet paper sheet by a curtain type or a spray type, and the adhesive agent accounts for 2-9% of the total mass of the absolutely dry fibers.
更进一步地，所述胶粘剂为纯丙乳液、硅烷改性丙烯酸乳液、聚乙烯醇或三聚氰胺乳液中至少一种。Further, the adhesive is at least one of pure acrylic emulsion, silane-modified acrylic emulsion, polyvinyl alcohol or melamine emulsion.
进一步地，干燥步骤中还包括施加防水剂的步骤，在湿纸页含水率为10～25wt％时施加氟碳、有机硅或环保型无PFOA防水剂，防水剂占绝干纤维总质量的0.5～2％。Further, the drying step also includes the step of applying a waterproofing agent, and when the moisture content of the wet paper sheet is 10-25 wt%, a fluorocarbon, silicone or environmentally friendly PFOA-free waterproofing agent is applied, and the waterproofing agent accounts for 0.5% of the total mass of the dry fiber. ~2%.
本发明的有益效果：Beneficial effects of the present invention:
1、本发明的玻纤滤材具有三层结构，迎风面层为平均孔径为18～50μm的大孔径层，中间层为平均孔径为8～20μm的释电纤维层，出风面层为平均孔径为1～9μm的小孔径层，大孔径层厚度较大，中间层及小孔径层次之，形成自进风向至出风方向孔径及厚度逐层减小的梯度结构，过滤时大孔径层截留尺寸较大的颗粒物，尺寸较小的颗粒物穿过大孔径层截留在中间层或小孔径层中，整个滤材的孔隙均可得到充分利用，滤材的容尘量得以提高，且具有较低的过滤阻力，滤材使用寿命得以提升。中间层为释电纤维层，由于释电纤维可起到消除或消散静电的作用，通过释电纤维层的带电颗粒物在释电纤维的作用下不带电 或带有极少电荷，从而减小电子产品生产车间静电的产生。1. The glass fiber filter material of the present invention has a three-layer structure, the windward surface layer is a large pore size layer with an average pore size of 18-50 μm, the middle layer is a charge-releasing fiber layer with an average pore size of 8-20 μm, and the air outlet surface layer is an average pore size layer. The small pore size layer with a pore size of 1 to 9 μm, the large pore size layer is thicker, and the middle layer and the small pore size layer form a gradient structure in which the pore size and thickness decrease layer by layer from the air inlet direction to the air outlet direction, and the large pore size layer intercepts during filtration. Larger-sized particles and smaller-sized particles pass through the large pore size layer and are trapped in the middle layer or the small pore size layer, the pores of the entire filter material can be fully utilized, the dust holding capacity of the filter material can be improved, and the filter material has a lower pore size. The filter resistance is increased, and the service life of the filter material is improved. The middle layer is the charge-releasing fiber layer. Since the charge-releasing fibers can eliminate or dissipate static electricity, the charged particles passing through the charge-releasing fiber layer are not charged or have very little charge under the action of the charge-releasing fibers, thereby reducing the amount of electrons. The generation of static electricity in the production workshop of the product.
2、本发明的玻纤滤材由各层纤维分别制浆后通过三层流浆箱布浆，脱水干燥形成。分别控制各层纤维的制浆条件得到不同叩解度、浓度的三种浆料，采用三层流浆箱布浆，不同组分的浆料通过流浆箱叶片在流道口与网部辊轮形成增强效应，在压力和拉力的作用下，各层纤维在竖直方向相互嵌入，形成具有梯度结构的多层滤材。采用多层流浆箱抄造所得滤材各层纤维间结合更紧密、结合部过渡更加连续、排湿效率更高，且不易分层。2. The glass fiber filter material of the present invention is formed by pulping each layer of fibers separately and then distributing the pulp through a three-layer headbox, dehydrating and drying. The pulping conditions of each layer of fibers are controlled respectively to obtain three kinds of pulps with different beating degrees and concentrations, and three-layer headbox is used for pulping. Enhancement effect, under the action of pressure and tension, the fibers of each layer are embedded in each other in the vertical direction, forming a multi-layer filter material with a gradient structure. The multi-layer headbox is used to manufacture the filter material with tighter bonding between the fibers of each layer, more continuous transition of the joint, higher moisture removal efficiency, and not easy to delaminate.
3、本发明的玻纤滤材的基材采用无硼或低硼的玻璃纤维棉及短切玻璃纤维，可降低玻纤滤材与氢氟酸反应生成硼氟酸的概率，防止生成的硼氟酸沉积在电子元器件的表面造成电子元器件的击穿失效。3. The glass fiber filter material of the present invention adopts boron-free or low-boron glass fiber cotton and chopped glass fiber, which can reduce the probability that the glass fiber filter material reacts with hydrofluoric acid to generate borofluoric acid, and prevents the generation of boron. The deposition of fluoric acid on the surface of electronic components causes breakdown failure of electronic components.
4、防水剂的施加可使本发明的玻纤滤材具有更好的抗湿性能，适应电子产品生产车间的工况，提高滤材的使用寿命。4. The application of the waterproofing agent can make the glass fiber filter material of the present invention have better moisture resistance, adapt to the working conditions of the electronic product production workshop, and improve the service life of the filter material.
附图说明Description of drawings
图1是示出本发明的高容尘、静电耗散玻纤滤材的结构示意图。FIG. 1 is a schematic diagram showing the structure of the high-dust-holding, static-dissipative glass fiber filter material of the present invention.
具体实施方式Detailed ways
为了更好地理解本发明，下面结合实施例进一步阐明本发明的内容，但本发明的内容不仅仅局限于下面的实施例。In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the embodiments, but the content of the present invention is not limited to the following embodiments.
实施例1Example 1
参阅图1，本实施例提供一种高容尘、静电耗散玻纤滤材，由上面层1、中间层2及下面层3构成，所述上面层1为大孔径层，厚度为0.2mm，平均孔径为19μm；中间层2为释电纤维层，厚度为0.1mm，平均孔径为10μm；下面层为小孔径层，厚度为0.1mm，平均孔径为8μm。大孔径层的基材为氧化硼含量1.8％的玻璃纤维棉及短切玻璃纤维，玻璃纤维棉与短切玻璃纤维的质量比为40:4。释电纤维层的基材为氧化硼含量1.8％的玻璃纤维棉和释电纤维；玻璃纤维棉和释电纤维的质量比为40:2。所述释电纤维为直径为2μm，长度为3mm的碳纤维。小孔径层的基材为氧化硼含量1.8％的玻璃纤维棉及短切玻璃纤维，玻璃纤维棉和短切玻璃纤维的质量比为75:15。Referring to FIG. 1, the present embodiment provides a high-dust-holding, static-dissipative glass fiber filter material, which is composed of an upper layer 1, an intermediate layer 2 and a lower layer 3. The upper layer 1 is a large pore size layer with a thickness of 0.2 mm and an average thickness of 0.2 mm. The pore size is 19 μm; the middle layer 2 is a charge-releasing fiber layer with a thickness of 0.1 mm and an average pore size of 10 μm; the lower layer is a small pore size layer with a thickness of 0.1 mm and an average pore size of 8 μm. The substrates of the large aperture layer are glass fiber wool and chopped glass fibers with a boron oxide content of 1.8%, and the mass ratio of the glass fiber wool to the chopped glass fibers is 40:4. The base material of the charge-releasing fiber layer is glass fiber wool and charge-releasing fibers with a boron oxide content of 1.8%; the mass ratio of glass fiber wool and charge-releasing fibers is 40:2. The electricity-releasing fibers are carbon fibers with a diameter of 2 μm and a length of 3 mm. The base material of the small aperture layer is glass fiber wool and chopped glass fiber with a boron oxide content of 1.8%, and the mass ratio of the glass fiber wool and the chopped glass fiber is 75:15.
实施例1的玻纤滤材制备方法为：The glass fiber filter material preparation method of embodiment 1 is:
(1)制浆：(1) Pulping:
制备大孔径层浆料，将玻璃纤维棉与短切玻璃纤维按质量比40:4分散在水中，调节体系PH为2.5时打浆疏解，得到叩解度为20°SR，浓度为0.9wt％的悬浮液；Prepare large pore size layer slurry, disperse glass fiber wool and chopped glass fiber in water at a mass ratio of 40:4, and adjust the pH of the system to 2.5 for beating and dispersing to obtain a suspension with a beating degree of 20°SR and a concentration of 0.9wt% liquid;
制备释电纤维层浆料，将玻璃纤维棉与释电纤维按质量比40:2分散在水中，调节体系PH为2.5时打浆疏解，得到叩解度为30°SR，浓度为0.9wt％的悬浮液；Prepare electricity-releasing fiber layer slurry, disperse glass fiber wool and electricity-releasing fiber in water at a mass ratio of 40:2, adjust the pH of the system to 2.5 for beating and dispersing, and obtain a suspension with a beating degree of 30°SR and a concentration of 0.9wt% liquid;
制备小孔径层浆料，玻璃纤维棉和短切玻璃纤维按质量比75:15分散在水中，调节体系PH为2.5时打浆疏解，得到叩解度为35°SR，浓度为0.9wt％的悬浮液；Prepare small pore size layer slurry, disperse glass fiber wool and chopped glass fiber in water at a mass ratio of 75:15, and adjust the pH of the system to 2.5 for beating and dispersing to obtain a suspension with a beating degree of 35°SR and a concentration of 0.9wt% ;
(2)调浆：将大孔径层纤维浆料加水稀释至0.2wt％浓度，释电纤维层浆料加水稀释至0.1wt％浓度，小孔径层浆料加水稀释至0.1wt％浓度；(2) Sizing: dilute the fiber slurry of the large pore size layer with water to a concentration of 0.2 wt %, the slurry of the electricity-releasing fiber layer with water to a concentration of 0.1 wt %, and the slurry of the small pore size layer with water to a concentration of 0.1 wt %;
(3)流浆箱布浆：将稀释后各层浆料分别输送至三层流浆箱的上、中、下层，使小孔径层浆料以0.1wt％浓度均匀分布在网部底层，释电纤维层浆料以0.1wt％浓度均匀分布在 小孔径层的上层，大孔径层浆料以0.2wt％浓度均匀分布在释电纤维层的上层，形成具有三层结构的湿纸页；(3) Slurry distribution in the headbox: The diluted slurry of each layer is transported to the upper, middle and lower layers of the three-layer headbox respectively, so that the slurry of the small aperture layer is evenly distributed on the bottom layer of the mesh at a concentration of 0.1wt%, releasing The electric fiber layer slurry is uniformly distributed on the upper layer of the small pore size layer with a concentration of 0.1wt%, and the large pore size layer slurry is uniformly distributed on the upper layer of the electricity-releasing fiber layer with a concentration of 0.2wt%, forming a wet paper sheet with a three-layer structure;
(4)脱水成形：三层结构的湿纸页经自然脱水和抽真空脱水后形成含水率55％的湿纸页；(4) Dehydration forming: the wet paper sheet with three-layer structure is formed into a wet paper sheet with a moisture content of 55% after natural dehydration and vacuum dehydration;
(5)施胶：采用帘式施胶方式将占绝干纤维总质量的2％的纯丙乳液施加到湿纸页上，抽真空脱水至含水率为60％；(5) Sizing: The pure acrylic emulsion, which accounts for 2% of the total mass of the dry fiber, is applied to the wet paper sheet by curtain sizing, and the moisture content is 60% by vacuum dehydration;
(6)干燥：使含水率60％的湿纸页通过多缸干燥机，在90℃下干燥25分钟，使湿纸页含水率为25wt％，将占绝干纤维总质量的0.5％的氟碳防水剂均匀施加到含水率为25wt％纸页上；使施加了防水剂的纸页通过多缸干燥机，在150℃下干燥25分钟，得到含水率为1.5％的高容尘、静电耗散玻纤滤材。(6) Drying: let the wet paper sheet with a moisture content of 60% pass through a multi-cylinder dryer, and dry it at 90° C. for 25 minutes, so that the moisture content of the wet paper sheet is 25 wt%, and 0.5% of the total dry fiber mass of fluorine The carbon water repellent was evenly applied to the paper sheet with a moisture content of 25 wt%; the paper sheet with the water repellent agent was passed through a multi-cylinder dryer and dried at 150 ° C for 25 minutes to obtain a high dust-holding, static dissipative glass with a moisture content of 1.5%. fiber filter.
实施例2Example 2
本实施例提供一种高容尘、静电耗散玻纤滤材，由上面层1、中间层2及下面层3构成，所述上面层1为大孔径层，厚度为0.25mm，平均孔径为30μm；中间层2为释电纤维层，厚度为0.12mm，平均孔径为15μm；下面层为小孔径层，厚度为0.12mm，平均孔径为5μm。大孔径层的基材为氧化硼含量1.6％的玻璃纤维棉及短切玻璃纤维，玻璃纤维棉与短切玻璃纤维的质量比为60:12。释电纤维层的基材为氧化硼含量1.6％的玻璃纤维棉和释电纤维；玻璃纤维棉和释电纤维的质量比为60:10，所述释电纤维为直径为3μm，长度为6mm的钢纤维。小孔径层的基材为氧化硼含量1.6％的玻璃纤维棉及短切玻璃纤维，玻璃纤维棉和短切玻璃纤维的质量比为80:12。This embodiment provides a high-dust-tolerant, static-dissipative glass fiber filter material, which is composed of an upper layer 1, an intermediate layer 2 and a lower layer 3, the upper layer 1 is a large aperture layer, the thickness is 0.25mm, and the average aperture is 30μm; The middle layer 2 is a charge-releasing fiber layer with a thickness of 0.12 mm and an average pore size of 15 μm; the lower layer is a small pore size layer with a thickness of 0.12 mm and an average pore size of 5 μm. The base material of the large aperture layer is glass fiber wool and chopped glass fiber with a boron oxide content of 1.6%, and the mass ratio of the glass fiber wool to the chopped glass fiber is 60:12. The base material of the electricity-releasing fiber layer is glass fiber wool and electricity-releasing fibers with a boron oxide content of 1.6%; the mass ratio of the glass fiber wool and electricity-releasing fibers is 60:10, and the electricity-releasing fibers are 3 μm in diameter and 6 mm in length of steel fibers. The base material of the small aperture layer is glass fiber wool and chopped glass fiber with a boron oxide content of 1.6%, and the mass ratio of the glass fiber wool and the chopped glass fiber is 80:12.
实施例2的玻纤滤材制备方法为：The glass fiber filter material preparation method of embodiment 2 is:
(1)制浆：(1) Pulping:
制备大孔径层浆料，将玻璃纤维棉与短切玻璃纤维按质量比60:12分散在水中，调节体系PH为3时打浆疏解，得到叩解度为13°SR，浓度为1wt％的悬浮液；Prepare large-pore size layer slurry, disperse glass fiber wool and chopped glass fiber in water at a mass ratio of 60:12, adjust the pH of the system to 3, beat and dissolve, and obtain a suspension with a beating degree of 13°SR and a concentration of 1wt% ;
制备释电纤维层浆料，将玻璃纤维棉与释电纤维按质量比60:10分散在水中，调节体系PH为3时打浆疏解，得到叩解度为25°SR，浓度为1wt％的悬浮液；Prepare electricity-releasing fiber layer slurry, disperse glass fiber wool and electricity-releasing fiber in water at a mass ratio of 60:10, adjust the pH of the system to 3 for beating and dispersing, and obtain a suspension with a beating degree of 25°SR and a concentration of 1wt% ;
制备小孔径层浆料，玻璃纤维棉和短切玻璃纤维按质量比80:3分散在水中，调节体系PH为3时打浆疏解，得到叩解度为40°SR，浓度为1wt％的悬浮液；Prepare small aperture layer slurry, glass fiber wool and chopped glass fiber are dispersed in water at a mass ratio of 80:3, and when the pH of the system is adjusted to 3, beating and dispersing are obtained to obtain a suspension with a beating degree of 40°SR and a concentration of 1wt%;
(2)调浆：将大孔径层纤维浆料加水稀释至0.24wt％浓度，释电纤维层浆料加水稀释至0.12wt％浓度，小孔径层浆料加水稀释至0.12wt％浓度；(2) Sizing: the fiber slurry of the large pore size layer is diluted with water to a concentration of 0.24wt%, the slurry of the electricity-releasing fiber layer is diluted with water to a concentration of 0.12wt%, and the slurry of the small pore size layer is diluted with water to a concentration of 0.12wt%;
(3)流浆箱布浆：稀释后各层浆料分别输送至三层流浆箱的上、中、下层，小孔径层浆料以0.12wt％浓度均匀分布在网部底层，释电纤维层浆料以0.12wt％浓度均匀分布在小孔径层的上层，大孔径层浆料以0.24wt％浓度均匀分布在释电纤维层的上层，形成具有三层结构的湿纸页；(3) Headbox pulping: After dilution, each layer of pulp is transported to the upper, middle and lower layers of the three-layer headbox, and the pulp of the small aperture layer is evenly distributed on the bottom layer of the mesh at a concentration of 0.12wt%, and the electricity-releasing fibers The layer slurry is uniformly distributed on the upper layer of the small pore size layer with a concentration of 0.12wt%, and the large pore size layer slurry is uniformly distributed on the upper layer of the charge-releasing fiber layer with a concentration of 0.24wt%, forming a wet paper sheet with a three-layer structure;
(4)脱水成形：三层结构的湿纸页经自然脱水和抽真空脱水后形成含水率65％的湿纸页；(4) Dehydration forming: the wet paper sheet with three-layer structure is formed into a wet paper sheet with a moisture content of 65% after natural dehydration and vacuum dehydration;
(5)施胶：采用帘式施胶方式将占绝干纤维总质量的4％的硅烷改性丙烯酸乳液施加到湿纸页上，抽真空脱水至含水率为62％；(5) Sizing: The silane-modified acrylic emulsion, which accounts for 4% of the total mass of the dry fiber, is applied to the wet paper sheet by curtain sizing, and the moisture content is 62% by vacuum dehydration;
(6)干燥：使含水率62％的湿纸页通过多缸干燥机，在80℃下干燥30分钟，使湿纸页含水率为20wt％，将占绝干纤维总质量的1％的有机硅防水剂均匀施加到含水率为 20wt％纸页上；使施加了防水剂的纸页通过多缸干燥机，在140℃下干燥30分钟，得到含水率为0.8％的高容尘、静电耗散玻纤滤材。(6) Drying: let the wet paper sheet with a moisture content of 62% pass through a multi-cylinder dryer, and dry it at 80°C for 30 minutes, so that the moisture content of the wet paper sheet is 20 wt%, and the organic The silicon water repellent was evenly applied to the paper sheet with a moisture content of 20 wt%; the paper sheet with the water repellent agent was passed through a multi-cylinder dryer and dried at 140° C. for 30 minutes to obtain a high dust-holding, electrostatic dissipative glass with a moisture content of 0.8%. fiber filter.
实施例3Example 3
本实施例提供一种高容尘、静电耗散玻纤滤材，由上面层1、中间层2及下面层3构成，所述上面层1为大孔径层，厚度为0.28mm，平均孔径为40μm；中间层2为释电纤维层，厚度为0.15mm，平均孔径为12μm；下面层为小孔径层，厚度为0.13mm，平均孔径为3μm。大孔径层的基材为氧化硼含量1.5％的玻璃纤维棉及短切玻璃纤维，玻璃纤维棉与短切玻璃纤维的质量比为80:35。释电纤维层的基材为氧化硼含量1.5％的玻璃纤维棉、短切玻璃纤维和释电纤维；玻璃纤维棉、释电纤维、短切玻璃纤维的质量比为80:10:10。所述释电纤维为直径为5μm，长度为9mm的铜纤维。小孔径层的基材为氧化硼含量1.5％的玻璃纤维棉及短切玻璃纤维，玻璃纤维棉和短切玻璃纤维的质量比为85:10。This embodiment provides a high-dust-tolerant and static-dissipative glass fiber filter material, which is composed of an upper layer 1, an intermediate layer 2 and a lower layer 3, and the upper layer 1 is a large aperture layer with a thickness of 0.28 mm and an average aperture of 40 μm; The middle layer 2 is a charge-releasing fiber layer with a thickness of 0.15 mm and an average pore size of 12 μm; the lower layer is a small pore size layer with a thickness of 0.13 mm and an average pore size of 3 μm. The base material of the large aperture layer is glass fiber wool and chopped glass fiber with a boron oxide content of 1.5%, and the mass ratio of the glass fiber wool to the chopped glass fiber is 80:35. The base material of the charge-releasing fiber layer is glass fiber wool with boron oxide content of 1.5%, chopped glass fiber and charge-releasing fiber; the mass ratio of glass fiber wool, charge-releasing fiber and chopped glass fiber is 80:10:10. The electricity-releasing fibers are copper fibers with a diameter of 5 μm and a length of 9 mm. The base material of the small aperture layer is glass fiber wool and chopped glass fiber with a boron oxide content of 1.5%, and the mass ratio of the glass fiber wool and the chopped glass fiber is 85:10.
实施例3的玻纤滤材制备方法为：The glass fiber filter material preparation method of embodiment 3 is:
(1)制浆：(1) Pulping:
制备大孔径层浆料，将玻璃纤维棉与短切玻璃纤维按质量比80:35分散在水中，调节体系PH为3.5时打浆疏解，得到叩解度为11°SR，浓度为1.2wt％的悬浮液；Prepare large-pore size layer slurry, disperse glass fiber wool and chopped glass fiber in water at a mass ratio of 80:35, and adjust the pH of the system to 3.5 for beating and dispersing to obtain a suspension with a beating degree of 11°SR and a concentration of 1.2wt% liquid;
制备释电纤维层浆料，将玻璃纤维棉、释电纤维、短切玻璃纤维的质量比为80:10:10，分散在水中，调节体系PH为3.5时打浆疏解，得到叩解度为28°SR，浓度为1.2wt％的悬浮液；Prepare the slurry of the electricity-releasing fiber layer, disperse the glass fiber wool, electricity-releasing fiber and chopped glass fiber in a mass ratio of 80:10:10, disperse them in water, and adjust the pH of the system to 3.5 for beating and dispersing to obtain a beating degree of 28° SR, a suspension at a concentration of 1.2 wt%;
制备小孔径层浆料，玻璃纤维棉和短切玻璃纤维按质量比85:10分散在水中，调节体系PH为3.5时打浆疏解，得到叩解度为50°SR，浓度为1.2wt％的悬浮液；Prepare small pore size layer slurry, disperse glass fiber wool and chopped glass fiber in water at a mass ratio of 85:10, and adjust the pH of the system to 3.5 for beating and dispersing to obtain a suspension with a beating degree of 50°SR and a concentration of 1.2wt% ;
(2)调浆：将大孔径层纤维浆料加水稀释至0.28wt％浓度，释电纤维层浆料加水稀释至0.15wt％浓度，小孔径层浆料加水稀释至0.13wt％浓度；(2) Sizing: the fiber slurry of the large pore size layer is diluted with water to a concentration of 0.28wt%, the slurry of the electricity-releasing fiber layer is diluted with water to a concentration of 0.15wt%, and the slurry of the small pore size layer is diluted with water to a concentration of 0.13wt%;
(3)流浆箱布浆将稀释后各层浆料分别输送至三层流浆箱的上、中、下层，使小孔径层浆料以0.13wt％浓度均匀分布在网部底层，释电纤维层浆料以0.15wt％浓度均匀分布在小孔径层的上层，大孔径层浆料以0.28wt％浓度均匀分布在释电纤维层的上层，形成具有三层结构的湿纸页；(3) Headbox distributing slurry The diluted slurry of each layer is transported to the upper, middle and lower layers of the three-layer headbox, so that the slurry of the small pore size layer is evenly distributed on the bottom layer of the mesh with a concentration of 0.13wt%, releasing electricity. The fiber layer slurry is uniformly distributed on the upper layer of the small pore size layer with a concentration of 0.15wt%, and the large pore size layer slurry is uniformly distributed on the upper layer of the electricity-releasing fiber layer with a concentration of 0.28wt%, forming a wet paper sheet with a three-layer structure;
(4)脱水成形：三层结构的湿纸页经自然脱水和抽真空脱水后形成含水率70％的湿纸页；(4) Dehydration forming: the wet paper sheet with three-layer structure is formed into a wet paper sheet with a moisture content of 70% after natural dehydration and vacuum dehydration;
(5)施胶：采用喷射式施胶方式将占绝干纤维总质量的6％的聚乙烯醇乳液施加到湿纸页上，抽真空脱水至含水率为65％；(5) Sizing: the polyvinyl alcohol emulsion, which accounts for 6% of the total mass of the dry fiber, is applied to the wet paper sheet by means of spray sizing, and the water content is 65% by vacuum dehydration;
(6)干燥：使含水率65％的湿纸页通过空气干燥机，在90℃下干燥40分钟，使湿纸页含水率为15wt％，将占绝干纤维总质量的1.5％的有机硅防水剂均匀施加到含水率为15wt％纸页上；使施加了防水剂的纸页通过空气干燥机，在180℃下干燥20分钟，得到含水率为0.2％的高容尘、静电耗散玻纤滤材。(6) Drying: let the wet paper sheet with a moisture content of 65% pass through an air dryer, and dry it at 90° C. for 40 minutes, so that the moisture content of the wet paper sheet is 15 wt%, and 1.5% of the total mass of the dry fiber is made of silicone The water-repellent agent was uniformly applied to the paper sheet with a moisture content of 15 wt%; the paper sheet with the water-repellent agent applied was passed through an air dryer and dried at 180° C. for 20 minutes to obtain a high-dust-holding, static-dissipative glass fiber filter with a moisture content of 0.2%. material.
实施例4Example 4
本实施例提供一种高容尘、静电耗散玻纤滤材，由上面层1、中间层2及下面层3构成，所述上面层1为大孔径层，厚度为0.3mm，平均孔径为48μm；中间层2为释电纤维层，厚度为0.2mm，平均孔径为20μm；下面层为小孔径层，厚度为0.2mm，平均孔径为1μm。大孔径层的基材为氧化硼含量1.3％的玻璃纤维棉及短切玻璃纤维，玻璃纤维棉与短切玻璃纤维的质 量比为92:60。释电纤维层的基材为氧化硼含量1.3％的玻璃纤维棉、短切玻璃纤维和释电纤维；玻璃纤维棉、释电纤维、短切玻璃纤维的质量比为92:40:2。所述释电纤维为直径为8μm，长度为15mm的镍纤维。小孔径层的基材为氧化硼含量1.3％的玻璃纤维棉及短切玻璃纤维，玻璃纤维棉和短切玻璃纤维的质量比为98:2。This embodiment provides a high-dust-tolerant, static-dissipative glass fiber filter material, which is composed of an upper layer 1, an intermediate layer 2 and a lower layer 3, and the upper layer 1 is a large aperture layer with a thickness of 0.3 mm and an average aperture of 48 μm; The middle layer 2 is a charge-releasing fiber layer with a thickness of 0.2 mm and an average pore size of 20 μm; the lower layer is a small pore size layer with a thickness of 0.2 mm and an average pore size of 1 μm. The substrates of the large aperture layer are glass fiber wool and chopped glass fibers with a boron oxide content of 1.3%, and the mass ratio of the glass fiber wool to the chopped glass fibers is 92:60. The base material of the charge-releasing fiber layer is glass fiber wool with boron oxide content of 1.3%, chopped glass fiber and charge-releasing fiber; the mass ratio of glass fiber wool, charge-releasing fiber, and chopped glass fiber is 92:40:2. The electricity-releasing fibers are nickel fibers with a diameter of 8 μm and a length of 15 mm. The substrates of the small aperture layer are glass fiber wool and chopped glass fibers with a boron oxide content of 1.3%, and the mass ratio of the glass fiber wool to the chopped glass fibers is 98:2.
实施例4的玻纤滤材制备方法为：The glass fiber filter material preparation method of embodiment 4 is:
(1)制浆：(1) Pulping:
制备大孔径层浆料，将玻璃纤维棉与短切玻璃纤维按质量比92:60分散在水中，调节体系PH为4时打浆疏解，得到叩解度为10°SR，浓度为1.4wt％的悬浮液；Prepare large pore size layer slurry, disperse glass fiber wool and chopped glass fiber in water at a mass ratio of 92:60, and adjust the pH of the system to 4 for beating and dispersing to obtain a suspension with a beating degree of 10°SR and a concentration of 1.4wt% liquid;
制备释电纤维层浆料，将玻璃纤维棉、释电纤维、短切玻璃纤维的质量比为92:40:2，分散在水中，调节体系PH为4.5时打浆疏解，得到叩解度为15°SR，浓度为1.4wt％的悬浮液；Prepare the slurry of the electricity-releasing fiber layer, disperse the glass fiber wool, the electricity-releasing fiber and the chopped glass fiber in a mass ratio of 92:40:2, and disperse them in water. When the pH of the system is adjusted to 4.5, beating and dispersing are obtained, and the beating degree is 15°. SR, a 1.4 wt% suspension;
制备小孔径层浆料，玻璃纤维棉和短切玻璃纤维按质量比98:2分散在水中，调节体系PH为4时打浆疏解，得到叩解度为70°SR，浓度为1.4wt％的悬浮液；Prepare small pore size layer slurry, glass fiber wool and chopped glass fiber are dispersed in water in a mass ratio of 98:2, and when the pH of the system is adjusted to 4, beating and dispersing are obtained to obtain a suspension with a beating degree of 70°SR and a concentration of 1.4wt% ;
(2)调浆：将大孔径层纤维浆料加水稀释至0.3wt％浓度，释电纤维层浆料加水稀释至0.2wt％浓度，小孔径层浆料加水稀释至0.2wt％浓度；(2) Sizing: the fiber slurry of the large pore size layer is diluted with water to a concentration of 0.3wt%, the slurry of the electricity-releasing fiber layer is diluted with water to a concentration of 0.2wt%, and the slurry of the small pore size layer is diluted with water to a concentration of 0.2wt%;
(3)流浆箱布浆：稀释后各层浆料分别输送至三层流浆箱的上、中、下层，小孔径层浆料以0.2wt％浓度均匀分布在网部底层，释电纤维层浆料以0.2wt％浓度均匀分布在小孔径层的上层，大孔径层浆料以0.3wt％浓度均匀分布在释电纤维层的上层，形成具有三层结构的湿纸页；(3) Headbox pulping: After dilution, each layer of pulp is transported to the upper, middle and lower layers of the three-layer headbox, and the pulp of the small aperture layer is evenly distributed on the bottom layer of the mesh at a concentration of 0.2wt%, and the discharge fibers The layer slurry is uniformly distributed on the upper layer of the small pore size layer with a concentration of 0.2wt%, and the large pore size layer slurry is uniformly distributed on the upper layer of the electricity-releasing fiber layer with a concentration of 0.3wt% to form a wet paper sheet with a three-layer structure;
(4)脱水成形：三层结构的湿纸页经自然脱水和抽真空脱水后形成含水率75％的湿纸页；(4) Dehydration forming: the wet paper sheet with three-layer structure is formed into a wet paper sheet with a moisture content of 75% after natural dehydration and vacuum dehydration;
(5)施胶：采用喷射式施胶方式将占绝干纤维总质量的9％的丙烯酸乳液和三聚氰胺乳液,按1:1配比施加到湿纸页上，抽真空脱水至含水率为70％；(5) Sizing: The acrylic emulsion and melamine emulsion, which account for 9% of the total dry fiber mass, are applied to the wet paper sheet in a ratio of 1:1 by means of spray sizing, and dehydrated by vacuuming to a moisture content of 70%. %;
(6)干燥：使含水率70％的湿纸页通过空气干燥机，在70℃下干燥90分钟，使湿纸页含水率为10wt％，将占绝干纤维总质量的2％的环保型无PFOA防水剂均匀施加到含水率为10wt％纸页上；使施加了防水剂的纸页通过空气干燥机，在160℃下干燥15分钟，得到含水率为0.5％的高容尘、静电耗散玻纤滤材。(6) Drying: let the wet paper sheet with a moisture content of 70% pass through an air dryer, and dry it at 70 ° C for 90 minutes, so that the moisture content of the wet paper sheet is 10 wt%, which will account for 2% of the total dry fiber mass. The PFOA-free water repellent was evenly applied to the paper sheet with a moisture content of 10wt%; the paper sheet with the water repellent agent was passed through an air dryer and dried at 160°C for 15 minutes to obtain a high dust-holding, static dissipative glass with a moisture content of 0.5%. fiber filter.
市购滤材1为厚度0.4mm的F9W单层玻纤滤材。The commercially available filter material 1 is a F9W single-layer glass fiber filter material with a thickness of 0.4 mm.
市购滤材2为厚度0.5mm的H11W单层玻纤滤材。The commercially available filter material 2 is an H11W single-layer glass fiber filter material with a thickness of 0.5 mm.
市购滤材3为厚度0.55mm的49W单层玻纤滤材。The commercially available filter material 3 is a 49W single-layer glass fiber filter material with a thickness of 0.55 mm.
市购滤材4为厚度0.65mm的H14W单层玻纤滤材。The commercially available filter material 4 is an H14W single-layer glass fiber filter material with a thickness of 0.65 mm.
性能测试：Performance Testing:
1、对本发明实施例的玻纤滤材及市购玻纤滤材分别进行过滤性能测试，根据测试标准CRAA431.3，采用TSI8130(0.3μm@5.3cm/s)。1. The filtration performance of the glass fiber filter material of the embodiment of the present invention and the commercially available glass fiber filter material are respectively tested, according to the test standard CRAA431.3, using TSI8130 (0.3μm@5.3cm/s).
2、对本发明实施例的玻纤滤材及市购玻纤滤材分别进行导电性能测试，根据GB12158标准,采用ZC-90E高绝缘电阻测量仪(检测电压500V)。2. Conduct electrical conductivity tests on the glass fiber filter material of the embodiment of the present invention and the commercially available glass fiber filter material respectively. According to GB12158 standard, ZC-90E high insulation resistance measuring instrument (detection voltage 500V) is used.
测试结果如下表1-2所示。The test results are shown in Table 1-2 below.
表1玻纤滤材过滤性能测试结果Table 1 Test results of glass fiber filter material filtration performance
   过滤效率(％)Filtration efficiency (%) 过滤阻力(Pa)Filter resistance (Pa)
实施例1Example 1 8888 6565
市购滤材1 Commercial filter material 1 8888 8282
实施例2Example 2 9999 130130
市购滤材2Commercial filter material 2 9999 168168
实施例3Example 3 99.9999.99 260260
市购滤材3Commercial filter media 3 99.9999.99 350350
实施例4Example 4 99.99799.997 294294
市购滤材4Commercial filter material 4 99.99699.996 380380
表2玻纤滤材表面电阻率及容尘量测试结果Table 2 Test results of surface resistivity and dust holding capacity of glass fiber filter material
   表面电阻率(Ω)Surface Resistivity (Ω) 容尘量(g/m 2) Dust holding capacity (g/m 2 )
实施例1Example 1 8.32×10 9 8.32×10 9 140140
市购滤材1 Commercial filter material 1 4.63×10 13 4.63×10 13 115115
实施例2Example 2 5.28×10 8 5.28×10 8 145145
市购滤材2Commercial filter material 2 3.51×10 13 3.51×10 13 110110
实施例3Example 3 9.47×10 8 9.47×10 8 150150
巾购滤材3Towel purchase filter material 3 5.78×10 12 5.78×10 12 105105
实施例4Example 4 2.04×10 7 2.04×10 7 155155
巾购滤材4Towel purchase filter material 4 7.32×10 12 7.32×10 12 100100
由表1和2的测试结果可以看出，在相同过滤效率下，实施例1～4制备的玻纤滤材的过滤阻力较市购滤材降低22％～25％，容尘量较市购滤材增加20％～50％。实施例1～4制备的玻纤滤材均为静电亚导体，市购滤材均为静电非导体。It can be seen from the test results in Tables 1 and 2 that under the same filtration efficiency, the filtration resistance of the glass fiber filter materials prepared in Examples 1 to 4 is 22% to 25% lower than that of the commercially available filter materials, and the dust holding capacity is lower than that of the commercially available filter materials. The filter material is increased by 20% to 50%. The glass fiber filter materials prepared in Examples 1 to 4 are all electrostatic subconductors, and the commercially available filter materials are all electrostatic nonconductors.
将实施例1制备的玻纤滤材用于电子产品生产车间的净化空调系统，净化空调系统的风机运行功率下降约10％；并且，玻纤滤材的更换周期从原先的半年延长至8个月以上，车间内发生静电打火的次数下降到原先的50％左右。The glass fiber filter material prepared in Example 1 was used in the purification air-conditioning system of the electronic product production workshop, and the fan operating power of the purification air-conditioning system was reduced by about 10%; and the replacement cycle of the glass fiber filter material was extended from the original half a year to 8 More than a month, the number of electrostatic sparks in the workshop has dropped to about 50% of the original.
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (10)

  1. 一种高容尘、静电耗散玻纤滤材，其特征在于，包括上面层、中间层及下面层，所述上面层为大孔径层，厚度为0.2～0.3mm，平均孔径为18～50μm；中间层为释电纤维层，厚度为0.1～0.2mm，平均孔径为8～20μm；下面层为小孔径层，厚度为0.1～0.2mm，平均孔径为1～9μm；上面层、中间层及下面层由各层纤维分别制浆后通过三层流浆箱布浆，脱水干燥成形。A high-dust-holding, static-dissipative glass fiber filter material is characterized in that it comprises an upper layer, a middle layer and a lower layer, the upper layer is a large aperture layer, the thickness is 0.2-0.3 mm, and the average aperture is 18-50 μm; The layer is a charge-releasing fiber layer with a thickness of 0.1-0.2mm and an average pore diameter of 8-20μm; the lower layer is a small pore size layer with a thickness of 0.1-0.2mm and an average pore diameter of 1-9μm; the upper layer, the middle layer and the lower layer The fibers of each layer are pulped separately and then distributed through a three-layer headbox, dewatered and dried to form.
  2. 根据权利要求1所述的高容尘、静电耗散玻纤滤材，其特征在于，大孔径层的基材为氧化硼含量小于2％的玻璃纤维棉及短切玻璃纤维，玻璃纤维棉与短切玻璃纤维的质量比为(40～92):(2～60)。The high-dust-holding, static-dissipative glass fiber filter material according to claim 1, wherein the base material of the large pore size layer is glass fiber wool and chopped glass fiber with a boron oxide content of less than 2%, glass fiber wool and chopped glass fiber The mass ratio of glass fiber is (40～92):(2～60).
  3. 根据权利要求1所述的高容尘、静电耗散玻纤滤材，其特征在于，释电纤维层的基材为氧化硼含量小于2％的玻璃纤维棉和短切玻璃纤维，以及释电纤维；玻璃纤维棉、释电纤维、短切玻璃纤维的质量比为：(40～92):(2～40):(0～20)。The high-dust-holding, static-dissipative glass fiber filter material according to claim 1, wherein the base material of the charge-releasing fiber layer is glass fiber cotton and chopped glass fibers with a boron oxide content of less than 2%, and charge-releasing fibers; The mass ratio of glass fiber wool, charge-releasing fiber and chopped glass fiber is: (40～92):(2～40):(0～20).
  4. 根据权利要求3所述的高容尘、静电耗散玻纤滤材，其特征在于，所述释电纤维为碳纤维、钢纤维、铜纤维或镍纤维中的至少一种，释电纤维的直径为2～8μm，长度为2～15mm。The high-dust-holding, static-dissipative glass fiber filter material according to claim 3, wherein the discharge fiber is at least one of carbon fiber, steel fiber, copper fiber or nickel fiber, and the diameter of the discharge fiber is 2 ~8μm, length is 2~15mm.
  5. 根据权利要求1所述的高容尘、静电耗散玻纤滤材，其特征在于，小孔径层的基材为氧化硼含量小于2％的玻璃纤维棉及短切玻璃纤维，玻璃纤维棉和短切玻璃纤维的质量比为：(75～98):(2～15)。The high-dust-tolerant and static-dissipative glass fiber filter material according to claim 1, wherein the base material of the small pore size layer is glass fiber wool and chopped glass fiber with a boron oxide content of less than 2%, glass fiber wool and chopped glass fiber. The mass ratio of glass fiber is: (75～98):(2～15).
  6. 根据权利要求1～5任意一项所述高容尘、静电耗散玻纤滤材的制备方法，其特征在于，包括以下步骤：The method for preparing a high-dust-holding, static-dissipative glass fiber filter material according to any one of claims 1 to 5, wherein the method comprises the following steps:
    6.1、制浆：6.1. Pulping:
    制备大孔径层浆料，将玻璃纤维棉与短切玻璃纤维按质量比(40～92):(2～60)分散在水中，调节体系PH为2.5～4.5时打浆疏解，得到叩解度为10～34°SR，浓度为0.9～1.4wt％的悬浮液；Prepare large aperture layer slurry, disperse glass fiber wool and chopped glass fiber in water according to the mass ratio (40～92): (2～60), adjust the pH of the system to be 2.5～4.5, beat and dissolve, and obtain a beating degree of 10 ~34°SR, a suspension with a concentration of 0.9 to 1.4 wt%;
    制备释电纤维层浆料，将玻璃纤维棉、释电纤维、短切玻璃纤维按质量比：(40～92):(2～40):(0～20)分散在水中，调节体系PH为2.5～4.5时打浆疏解，得到叩解度为15～39°SR，浓度为0.9～1.4wt％的悬浮液；Prepare electricity-releasing fiber layer slurry, disperse glass fiber wool, electricity-releasing fiber and chopped glass fiber in water according to the mass ratio: (40～92):(2～40):(0～20), and adjust the pH of the system to be At 2.5 to 4.5, beating and dissolving to obtain a suspension with a beating degree of 15-39°SR and a concentration of 0.9-1.4wt%;
    制备小孔径层浆料，玻璃纤维棉和短切玻璃纤维按质量比：(75～98):(2～15)分散在水中，调节体系PH为2.5～4.5时打浆疏解，得到叩解度为35～70°SR，浓度为0.9～1.4wt％的悬浮液；Prepare small pore size layer slurry, glass fiber wool and chopped glass fiber are dispersed in water according to the mass ratio: (75～98):(2～15), adjust the pH of the system to be 2.5～4.5, beat and dissolve, and obtain a beating degree of 35 ~70°SR, a suspension with a concentration of 0.9 to 1.4 wt%;
    6.2、流浆箱布浆：将步骤6.1制备的各层浆料分别输送至三层流浆箱的上、中、下层，使小孔径层浆料以0.1～0.2wt％浓度均匀分布在网部底层，释电纤维层浆料以0.1～0.2wt％浓度均匀分布在小孔径层的上层，大孔径层浆料以0.2～0.3wt％浓度均匀分布在释电纤维层的上层，形成具有三层结构的湿纸页；6.2. Headbox pulp distribution: transport each layer of pulp prepared in step 6.1 to the upper, middle and lower layers of the three-layer headbox respectively, so that the pulp of the small aperture layer is evenly distributed in the wire part at a concentration of 0.1-0.2wt% In the bottom layer, the slurry of the electricity-releasing fiber layer is evenly distributed in the upper layer of the small aperture layer with a concentration of 0.1-0.2wt%, and the slurry of the large-aperture layer is evenly distributed in the upper layer of the electricity-releasing fiber layer with a concentration of 0.2-0.3wt%, forming a three-layer structure. Structured wet paper sheets;
    6.3、脱水成型：三层结构的湿纸页经自然脱水和抽真空脱水后形成含水率55～75％的湿纸页；6.3. Dehydration forming: the wet paper sheet with three-layer structure is formed by natural dehydration and vacuum dehydration to form a wet paper sheet with a moisture content of 55-75%;
    6.4、干燥：含水率55～75％的湿纸页经多缸干燥或空气干燥后形成含水率为0.2～1.5％的玻纤滤材。6.4. Drying: Wet paper with a moisture content of 55-75% is multi-cylinder drying or air-dried to form a glass fiber filter material with a moisture content of 0.2-1.5%.
  7. 根据权利要求6所述的制备方法，其特征在于，流浆箱布浆步骤前还包括，分别将步骤6.2中的大孔径层纤维浆料、释电纤维层浆料和小孔径层浆料进行过滤和加水稀释的步骤，大孔径层纤维浆料加水稀释至0.2～0.3wt％浓度，释电纤维层浆料加水稀释至0.1～0.2wt％浓度，小孔径层浆料加水稀释至0.1～0.2wt％浓度。The preparation method according to claim 6, characterized in that, before the headbox distributing step, the step further comprises, respectively, the large-aperture-layer fiber slurry, the charge-releasing fiber-layer slurry, and the small-aperture layer slurry in step 6.2. In the steps of filtration and dilution with water, the fiber slurry of the large pore size layer is diluted with water to a concentration of 0.2-0.3wt%, the slurry of the electricity-releasing fiber layer is diluted with water to a concentration of 0.1-0.2wt%, and the slurry of the small pore size layer is diluted with water to a concentration of 0.1-0.2 wt% concentration.
  8. 根据权利要求6所述的制备方法，其特征在于，干燥步骤前还包括施胶的步骤，采用帘式或喷射式将胶粘剂施加到湿纸页上，胶粘剂占绝干纤维总质量的2～9％。The preparation method according to claim 6, characterized in that, before the drying step, it further comprises a step of sizing, and the adhesive is applied to the wet paper sheet by a curtain type or a spray type, and the adhesive accounts for 2-9% of the total mass of the dry fiber. %.
  9. 根据权利要求8所述的制备方法，其特征在于，所述胶粘剂为纯丙乳液、硅烷改性丙烯酸乳液、聚乙烯醇或三聚氰胺乳液中至少一种。The preparation method according to claim 8, wherein the adhesive is at least one of pure acrylic emulsion, silane-modified acrylic emulsion, polyvinyl alcohol or melamine emulsion.
  10. 根据权利要求6所述的制备方法，其特征在于，干燥步骤中还包括施加防水剂的步骤，在湿纸页含水率为10～25wt％时施加氟碳、有机硅或环保型无PFOA防水剂，防水剂占绝干纤维总质量的0.5～2％。The preparation method according to claim 6, characterized in that, the drying step further comprises the step of applying a water repellent, and when the moisture content of the wet paper sheet is 10-25 wt %, a fluorocarbon, silicone or environmentally friendly PFOA-free water repellent is applied , the water repellent accounts for 0.5 to 2% of the total mass of the dry fiber.
PCT/CN2021/134516 2020-12-01 2021-11-30 High-dust-holding capacity and electrostatic dissipation glass fiber filter material, and preparation method therefor WO2022116973A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011381918.7 2020-12-01
CN202011381918.7A CN112501938B (en) 2020-12-01 2020-12-01 High-dust-holding and static-dissipation glass fiber filter material and preparation method thereof

Publications (1)

Publication Number Publication Date
WO2022116973A1 true WO2022116973A1 (en) 2022-06-09

Family

ID=74968854

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/134516 WO2022116973A1 (en) 2020-12-01 2021-11-30 High-dust-holding capacity and electrostatic dissipation glass fiber filter material, and preparation method therefor

Country Status (2)

Country Link
CN (1) CN112501938B (en)
WO (1) WO2022116973A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112501938B (en) * 2020-12-01 2022-09-09 南京玻璃纤维研究设计院有限公司 High-dust-holding and static-dissipation glass fiber filter material and preparation method thereof
CN114517424A (en) * 2022-02-18 2022-05-20 南京玻璃纤维研究设计院有限公司 Separation strip for high-temperature-resistant air filter and preparation method thereof
CN115948940A (en) * 2022-12-05 2023-04-11 南京玻璃纤维研究设计院有限公司 Preparation method of salt spray filter paper and salt spray filter paper
CN117026684A (en) * 2023-07-12 2023-11-10 山东仁丰特种材料股份有限公司 High-performance gradient glass fiber liquid filter paper and preparation method and application thereof

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030082979A1 (en) * 2001-10-31 2003-05-01 Kimberly-Clark Worldwide, Inc. Pulp and conjugate glass fiber composite with enhanced stiffness and permeability
CN101652168A (en) * 2007-02-22 2010-02-17 唐纳森公司 Filter element and method thereof
CN101816856A (en) * 2009-02-27 2010-09-01 新东工业株式会社 Antistatic filtering cloth in surface filtering mode for dust collector
CN101927110A (en) * 2010-08-27 2010-12-29 宋朋泽 Anti-static glass fiber composite echelon filter material and preparation method thereof
CN204147659U (en) * 2014-09-15 2015-02-11 天诺光电材料股份有限公司 The non-woven fabricbase cloth of a kind of middle high temperature adds the filtering material of metalized fibers
CN204898434U (en) * 2015-07-31 2015-12-23 贺氏（苏州）特殊材料有限公司 A double -deck compound filter paper for rolling over pleat type air cleaner
CN205439451U (en) * 2015-11-30 2016-08-10 佛山市南海必得福无纺布有限公司 Antistatic non -woven fabrics
CN106457148A (en) * 2014-05-15 2017-02-22 霍林斯沃思和沃斯有限公司 Pre-coalescing multi-layered filter media
CN107106953A (en) * 2014-12-19 2017-08-29 霍林斯沃思和沃斯有限公司 Filter medium including pre-filter layer
CN108570882A (en) * 2017-03-13 2018-09-25 昆明纳太科技有限公司 Carbon nanotube composite gradient structure filter paper and preparation method thereof
CN110820423A (en) * 2019-09-29 2020-02-21 中材科技股份有限公司 Glass fiber filter paper with gradient structure and preparation method and application thereof
CN211358130U (en) * 2019-12-12 2020-08-28 上海科格思过滤材料有限公司 Anti-static composite fiber filter felt
CN112501938A (en) * 2020-12-01 2021-03-16 南京玻璃纤维研究设计院有限公司 High-dust-holding and static-dissipation glass fiber filter material and preparation method thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4713285A (en) * 1986-05-02 1987-12-15 Frederick G. Crane, Jr. High temperature filter material
NL8700124A (en) * 1987-01-20 1988-08-16 Acs Milieutechniek Bv Particulate air filter esp. for sterile space - comprises pressed glass fibres with covering contg. carbon to dissipate electrostatic charge
CN101582302B (en) * 2008-05-14 2011-12-21 清华大学 Carbon nano tube/conductive polymer composite material
CN101748514B (en) * 2010-02-23 2011-10-26 凯泰特种纤维科技有限公司 Moisture-absorbing antistatic dyeable polypropylene fibre and preparation method thereof
CN105233571B (en) * 2015-10-22 2017-07-07 南京航空航天大学 A kind of antibacterial glass fibre combined filtration paper and preparation method thereof
CN105330176B (en) * 2015-11-20 2018-11-27 黄河水利职业技术学院 A method of preparing carbon nanotube/glass nano-micron compound powder
CN107303448A (en) * 2016-04-22 2017-10-31 太仓派欧技术咨询服务有限公司 A kind of composite air filtering paper
CN106337320A (en) * 2016-08-30 2017-01-18 苏州华泰空气过滤器有限公司 Faint-scent type filter paper
CN106283910B (en) * 2016-09-08 2018-09-25 南京航空航天大学 Low flow resistance filter paper of a kind of environment-friendly highly efficient and preparation method thereof
CN111495036B (en) * 2020-03-27 2022-03-18 南京玻璃纤维研究设计院有限公司 Glass fiber composite filter material, preparation method and application thereof

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030082979A1 (en) * 2001-10-31 2003-05-01 Kimberly-Clark Worldwide, Inc. Pulp and conjugate glass fiber composite with enhanced stiffness and permeability
CN101652168A (en) * 2007-02-22 2010-02-17 唐纳森公司 Filter element and method thereof
CN101816856A (en) * 2009-02-27 2010-09-01 新东工业株式会社 Antistatic filtering cloth in surface filtering mode for dust collector
CN101927110A (en) * 2010-08-27 2010-12-29 宋朋泽 Anti-static glass fiber composite echelon filter material and preparation method thereof
CN106457148A (en) * 2014-05-15 2017-02-22 霍林斯沃思和沃斯有限公司 Pre-coalescing multi-layered filter media
CN204147659U (en) * 2014-09-15 2015-02-11 天诺光电材料股份有限公司 The non-woven fabricbase cloth of a kind of middle high temperature adds the filtering material of metalized fibers
CN107106953A (en) * 2014-12-19 2017-08-29 霍林斯沃思和沃斯有限公司 Filter medium including pre-filter layer
CN204898434U (en) * 2015-07-31 2015-12-23 贺氏（苏州）特殊材料有限公司 A double -deck compound filter paper for rolling over pleat type air cleaner
CN205439451U (en) * 2015-11-30 2016-08-10 佛山市南海必得福无纺布有限公司 Antistatic non -woven fabrics
CN108570882A (en) * 2017-03-13 2018-09-25 昆明纳太科技有限公司 Carbon nanotube composite gradient structure filter paper and preparation method thereof
CN110820423A (en) * 2019-09-29 2020-02-21 中材科技股份有限公司 Glass fiber filter paper with gradient structure and preparation method and application thereof
CN211358130U (en) * 2019-12-12 2020-08-28 上海科格思过滤材料有限公司 Anti-static composite fiber filter felt
CN112501938A (en) * 2020-12-01 2021-03-16 南京玻璃纤维研究设计院有限公司 High-dust-holding and static-dissipation glass fiber filter material and preparation method thereof

Also Published As

Publication number Publication date
CN112501938B (en) 2022-09-09
CN112501938A (en) 2021-03-16

Similar Documents

Publication Publication Date Title
WO2022116973A1 (en) High-dust-holding capacity and electrostatic dissipation glass fiber filter material, and preparation method therefor
US8663358B2 (en) Filter media with improved conductivity
CN109414634A (en) Filter medium, the method for manufacturing filter medium and application thereof
CN106512569A (en) Filtering medium and air purifier
TW201332192A (en) Separator for electrochemical device and manufacture process thereof
CN112652861A (en) Lithium ion battery isolating membrane
JP2004031277A (en) Coated separator, manufacturing method of same, and electric/electronic part using same
KR101337921B1 (en) Porous membrane and process for preparing the same
WO2013054879A1 (en) Microporous film and manufacturing method therefor
Huang et al. Study on the electrical properties of nanopaper made from nanofibrillated cellulose for application in power equipment
TW201408966A (en) Air filtering device
JP2005248409A (en) Insertion paper for glass and method for producing the same
CN205649998U (en) Gas medium particle clean system
CN114728227B (en) Filter for air purification
JP2003059766A (en) Separator for electrochemical element and manufacturing method thereof
JP2016024918A (en) Method of manufacturing separator for electrochemical element, separator for electrochemical element manufactured by the manufacturing method and electrochemical element using the same
JPH06254433A (en) Air filter
US20140020350A1 (en) Air filter media
CN111481996B (en) Adsorption-enhanced filter material
CN112195565B (en) Preparation method of electrostatic spinning multilayer nanofiber membrane for indoor air humidity adjustment, product and application
CN210688539U (en) Intelligent high-voltage electric field air filtering section equipment and matched filter screen
CN109316835A (en) A kind of tourmaline composite air filtrate and preparation method thereof
CN116641184A (en) Preparation and application of cellulose-based electret nanofiber membrane for purifying radioactive aerosol
Su et al. Improving the Surface Performance of Electrospun Air Filter Paper Using Multi-walled Carbon Nanotubes
CN206965326U (en) A kind of woven filtrate of acrylic fiber

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21900004

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21900004

Country of ref document: EP

Kind code of ref document: A1