阅读说明：本技术 一种油品净化滤膜用疏水亲油改性超细玻璃纤维棉及其制备方法 (Hydrophobic oleophylic modified superfine glass fiber cotton for oil product purification filter membrane and preparation method thereof ) 是由 翟福强 李璐 于 2019-07-01 设计创作，主要内容包括：本发明涉及一种油品净化滤膜用疏水亲油改性超细玻璃纤维棉及其制备方法,属于功能复合材料技术领域,所述疏水亲油改性超细玻璃纤维棉按质量百分比计,由90～96wt％超细玻璃纤维棉,6～8wt％在纤维表面营造微纳粗糙结构的纳米级颗粒和0.5～1wt％偶联剂组成。本发明还涉及该疏水亲油改性超细玻璃纤维棉的制备方法,通过将超细玻璃纤维与纳米级颗粒及偶联剂复合后制得疏水亲油改性的超细玻璃纤维棉,该改性超细玻璃纤维棉可用于制备具有高容尘量,大水接触角和高油水分离率的油品净化玻璃纤维滤膜。(The invention relates to a hydrophobic oleophylic modified superfine glass fiber cotton for an oil product purification filter membrane and a preparation method thereof, and belongs to the technical field of functional composite materials, wherein the hydrophobic oleophylic modified superfine glass fiber cotton comprises 90-96 wt% of superfine glass fiber cotton, 6-8 wt% of nano-scale particles for creating a micro-nano coarse structure on the surface of fibers and 0.5-1 wt% of a coupling agent in percentage by mass. The invention also relates to a preparation method of the hydrophobic oleophylic modified superfine glass fiber cotton, which is characterized in that the hydrophobic oleophylic modified superfine glass fiber cotton is prepared by compounding superfine glass fibers, nano-scale particles and a coupling agent, and the modified superfine glass fiber cotton can be used for preparing oil product purification glass fiber filter membranes with high dust holding capacity, large water contact angle and high oil-water separation rate.)

1. The hydrophobic oleophylic modified superfine glass fiber cotton for the oil product purification filter membrane is characterized by comprising the following components in percentage by mass: 90-96 wt% of superfine glass fiber cotton, 6-8 wt% of nano-scale particles for creating a micro-nano coarse structure on the surface of the fiber and 0.5-1 wt% of coupling agent;the superfine glass fiber cotton comprises the following components in percentage by mass: SiO 2₂：56.5～66.5wt％，Al₂O₃：2.5～6.5wt％，MgO：4.5～7.5wt％，CaO：1.5～3.5wt％，B₂O₃：3～5.5wt％，Fe₂O₃+ ZnO + BaO: 4.5 to 7.5, basic metal oxide R₂O(Na₂O+K₂O) content is: 8 to 10.5 wt%.

2. The hydrophobic oleophylic modified superfine glass fiber cotton for oil product purification filter membrane of claim 1, wherein the fiber diameter of the hydrophobic oleophylic modified superfine glass fiber cotton is normally distributed at 0.15-3.5 μm for 99.5%, the fiber length is normally distributed at 0.5-4.5 mm for 98.5%, the maximum pore diameter of the fiber is less than or equal to 9 μm, and the fiber porosity is greater than or equal to 98.5%.

3. The hydrophobic oleophilic modified superfine glass fiber cotton for oil product purification filter membrane as claimed in claim 1, wherein the nano-scale particles for creating micro-nano coarse structure on the fiber surface are one or more of nano-titania and nano-silica particles prepared by high energy ball milling method, precipitation method, sol-gel method, hydrothermal method and redox method.

4. The hydrophobic oleophilic modified superfine glass fiber wool for oil product purification filter membrane as claimed in claim 1, wherein the diameter of the nano-scale particles for creating the micro-nano coarse structure on the fiber surface is 20-100 nm.

5. The hydrophobic oleophilic modified superfine glass fiber wool for oil purifying filter membrane as claimed in claim 1, wherein the coupling agent is one or more of KH792, KH550, KH560, NDZ-101, NDZ-311, DL602 and DL 171.

6. The preparation method of the hydrophobic oleophylic modified superfine glass fiber cotton for the oil product purification filter membrane as recited in any one of claims 1 to 5, which is characterized by comprising the following steps:

selecting proper amount of quartz sand, sodium carbonate, potassium feldspar, albite, calcite, borax, dolomite, barium carbonate and zinc oxide according to the chemical composition of the superfine glass fiber cotton, then the selected mineral raw materials are mixed uniformly and put into a kiln for high-temperature calcination, bubbles and impurities are removed and then the mixture is smelted into uniform and transparent glass liquid, then the molten glass forms a primary glass fiber filament through the alloy bushing plate, the primary glass fiber filament is blown by high-temperature and high-pressure flame to form superfine glass fiber, and (2) uniformly atomizing and spraying the coupling agent mixed with the nano-scale particles on the surface of the superfine glass fiber while flame spraying to prepare the hydrophobic oleophylic modified superfine glass fiber, uniformly dispersing the modified superfine glass fiber on a forming net by negative pressure induced air, and finally drying to prepare the hydrophobic oleophylic modified superfine glass fiber cotton for the oil product purification filter membrane.

7. The method of claim 6, wherein the kiln has a firing temperature of 1400 ± 10 ℃, a glass liquid temperature of 1100 ± 10 ℃, a bushing temperature of 980 ± 10 ℃, a primary glass fiber temperature of 70 ± 3 ℃, and a flame blowing temperature of 1025 ± 10 ℃.

8. The method according to claim 6, wherein the material of the alloy bushing is PtRh30, PtRh20, PtRh10 or PtRh6 platinum-rhodium alloy.

9. The method according to claim 6, wherein the diameter of the primary glass fiber filaments is 0.15 to 2.5 mm; the spraying flow rate of the coupling agent mixed with the nano-scale particles is 120-225 kg/h.

10. The preparation method according to claim 6, wherein the drying treatment is drying in a drying room at 115-135 ℃ for 5 +/-1 min.

11. The method of claim 6, wherein the oil product is prepared from the hydrophobic oleophilic modified superfine glass fiber cottonThe water contact angle of the purification filter membrane is 135-165 degrees, the oil-water separation rate is 88-96 percent, and the dust holding capacity is 125-225 g/m²。

Technical Field

The invention belongs to the technical field of functional composite materials, and particularly relates to hydrophobic oleophylic modified superfine glass fiber cotton for an oil product purification filter membrane and a preparation method thereof.

Background

The hydraulic transmission equipment is known as an industrially driven heart, has the characteristics of large power-weight ratio, rapid starting and braking, high reliability and stability and the like, is widely applied to the fields of aerospace, new energy equipment, heavy machinery, automobiles and the like, and occupies a very prominent position in various systems in the equipment manufacturing industry. The hydraulic oil has the functions of energy transfer, system lubrication, wear resistance, corrosion resistance, cooling and the like in a hydraulic system, and plays an important role in the normal operation of the hydraulic system. The cleanliness of hydraulic oil directly influences the operation of hydraulic equipment, and when the hydraulic oil is mixed with pollutants, the performance of a hydraulic system is often reduced and even fails. Research has found that more than 75% of hydraulic equipment faults are caused by hydraulic oil pollution, wherein water is one of the most main liquid pollutants of hydraulic oil. Water enters the hydraulic oil and reacts with the hydraulic oil to form acidic substances and oil sludge, which causes severe reduction of the transmission and lubricating capabilities of the hydraulic oil and accelerates oxidation and corrosion of hydraulic components. Therefore, the oil product purification filter membrane with high dust holding capacity, large water contact angle and high oil-water separation rate is developed, and has high economic value and strategic significance.

The publication No. CN105986512A discloses composite high-efficiency oil-water separation hydraulic filter paper which is prepared from 50-55 mm of alkali-free superfine glass fiber, 55-60 mm of bleached softwood pulp, a proper amount of distilled water, 0.8-1 mm of anionic polypropylene phthalamide, a proper amount of concentrated sulfuric acid with the concentration of 98 wt%, 10-12 mm of nano titanium dioxide, 20-25% of ferroferric oxide colloidal solution with the solid content of 30%, a proper amount of absolute ethyl alcohol, 60-65% of fluorine-silicon emulsion with the solid content of 40 wt%, 1-1.2 of alkenyl succinic anhydride, 7-8% of sisal fiber, 3-4% of waste rubber powder, 0.9-1.1% of silane coupling agent, 1.5-2% of organic silicon emulsion and 2-3% of urea. The filter membrane has good adsorptivity through scientific and reasonable component proportion, and simultaneously, the hydrophobic oleophylic performance is good, and high-efficient oil-water separation can be realized.

The publication No. CN105986528A discloses hydraulic oil filter paper for realizing high-efficiency oil-water separation, which is prepared from 50-55 mm of alkali-free superfine glass fiber with the thickness of 3-5 mm, 55-60 mm of bleached softwood pulp, a proper amount of distilled water, 0.8-1 mm of anionic polyacrylamide, a proper amount of concentrated sulfuric acid with the concentration of 98 wt%, 10-12 mm of nano titanium dioxide, 20-25% of ferroferric oxide colloidal solution with the solid content of 30%, a proper amount of absolute ethyl alcohol, 60-65% of fluorosilicone emulsion with the solid content of 40 wt%, NN 00.8-1 mm of dispersant, 3-4 mm of zeolite molecular sieve, 0.2-0.3 mm of sodium polystyrene sulfonate, 2-3 mm of peat soil, 0.4-0.5 mm of sodium bicarbonate and 0.8-1 mm of microcrystalline paraffin. The filter membrane has good adsorption efficiency, oil-water separation is realized, the cleanliness of hydraulic oil is improved, and the service life is prolonged.

The publication No. CN106948221A discloses a high dust holding capacity liquid filtering composite material and a preparation method thereof, belonging to the field of liquid filtering, the liquid filtering composite material consists of a substrate layer, a glass fiber paper layer and a water-resistant layer, has the advantages of high strength, large specific surface area, high filtering speed, high filtering precision, small filtering resistance, good hydrophobicity and the like, solves the problem that the filtering precision of a granular filtering material is limited by the particle size of the filtering material, and has high capacity and long service life.

In the three patents, the superfine glass fiber cotton used in the composite filter membrane for oil-water separation is not subjected to hydrophobic oleophylic modification, or the hydrophobic oleophylic modification is generated in the process of preparing the filter membrane or after the filter membrane is prepared. The hydrophobic oleophylic modification of the superfine glass fiber cotton is not really realized, the hydrophobic oleophylic modification for constructing a micro-nano coarse structure on the surface of each single glass fiber is not realized, and the organic fusion of the glass fiber cotton and nano particles is not caused. Therefore, the dust holding capacity, the water contact angle and the oil-water separation rate of the prepared composite filter membrane for oil-water separation cannot be guaranteed. Therefore, how to prepare the hydrophobic oleophylic modified superfine glass fiber cotton with excellent and stable performance is a problem to be solved urgently for preparing the oil product purification filter membrane with high dust holding capacity, large water contact angle and high oil-water separation rate.

Disclosure of Invention

In view of the above, the present invention aims to (1) provide a hydrophobic oleophylic modified superfine glass fiber cotton for oil purification filter membrane; (2) provides a preparation method of hydrophobic oleophylic modified superfine glass fiber cotton for an oil product purification filter membrane.

In order to achieve the purpose, the invention provides the following technical scheme:

1. the hydrophobic oleophylic modified superfine glass fiber cotton for the oil product purification filter membrane comprises the following components in percentage by massThe superfine glass fiber cotton comprises the following components: 90-96 wt% of superfine glass fiber cotton, 6-8 wt% of nano-scale particles for creating a micro-nano coarse structure on the surface of the fiber and 0.5-1 wt% of coupling agent; the superfine glass fiber cotton comprises the following components in percentage by mass: SiO 2₂：56.5～66.5wt％，Al₂O₃：2.5～6.5wt％，MgO：4.5～7.5wt％，CaO：1.5～3.5wt％，B₂O₃：3～5.5wt％，Fe₂O₃+ ZnO + BaO: 4.5 to 7.5, basic metal oxide R₂O(Na₂O+K₂O) content is: 8 to 10.5 wt%.

Furthermore, the diameter of the hydrophobic oleophylic modified superfine glass fiber cotton is normally distributed at 0.15-3.5 mu m in 99.5 percent, the length of the fiber is normally distributed at 0.5-4.5 mm in 98.5 percent, the maximum aperture of the fiber is less than or equal to 9 mu m, and the porosity of the fiber is more than or equal to 98.5 percent.

Further, the nano-scale particles for creating the micro-nano coarse structure on the surface of the fiber are one or more of nano titanium dioxide and nano silicon dioxide particles prepared by a high-energy ball milling method, a precipitation method, a sol-gel method, a hydrothermal method and a redox method.

Further, the diameter of the nano-scale particles for constructing the micro-nano coarse structure on the surface of the fiber is 20-100 nm.

Further, the coupling agent is one or more of KH792, KH550, KH560, NDZ-101, NDZ-311, DL602 and DL 171.

2. The preparation method of the hydrophobic oleophylic modified superfine glass fiber cotton for the oil product purification filter membrane comprises the following specific steps:

selecting proper amount of quartz sand, sodium carbonate, potassium feldspar, albite, calcite, borax, dolomite, barium carbonate and zinc oxide according to the chemical composition of the superfine glass fiber cotton, then the selected mineral raw materials are mixed uniformly and put into a kiln for high-temperature calcination, bubbles and impurities are removed and then the mixture is smelted into uniform and transparent glass liquid, then the molten glass forms a primary glass fiber filament through the alloy bushing plate, the primary glass fiber filament is blown by high-temperature and high-pressure flame to form superfine glass fiber, and (2) uniformly atomizing and spraying the coupling agent mixed with the nano-scale particles on the surface of the superfine glass fiber while flame spraying to prepare the hydrophobic oleophylic modified superfine glass fiber, uniformly dispersing the modified superfine glass fiber on a forming net by negative pressure induced air, and finally drying to prepare the hydrophobic oleophylic modified superfine glass fiber cotton for the oil product purification filter membrane.

Further, the calcining temperature of the kiln is 1400 +/-10 ℃, the glass liquid temperature is 1100 +/-10 ℃, the bushing temperature is 980 +/-10 ℃, the primary glass fiber filament temperature is 70 +/-3 ℃, and the flame blowing temperature is 1025 +/-10 ℃.

Furthermore, the material of the alloy bushing is one of PtRh30, PtRh20, PtRh10 or PtRh6 platinum-rhodium alloy.

Further, the diameter of the primary glass fiber yarn is 0.15-2.5 mm; the spraying flow rate of the coupling agent mixed with the nano-scale particles is 120-225 kg/h.

Further, the drying treatment is drying for 5 +/-1 min in a drying room at the temperature of 115-135 ℃.

The invention has the beneficial effects that: the invention provides a hydrophobic oleophylic modified superfine glass fiber cotton for an oil product purification filter membrane and a preparation method thereof. Meanwhile, the chemical components of the superfine glass fiber cotton and the alloy bushing are limited, so that the fiber can be effectively refined, the expansion coefficient of glass is reduced, the thermal stability, the chemical stability and the mechanical strength of the superfine glass fiber are improved, and the dust holding capacity, the water contact angle and the oil-water separation rate of the filter membrane for purifying the oil product prepared by utilizing the hydrophobic oleophylic modified superfine glass fiber cotton oil are effectively improved. The preparation method provided by the invention ensures that the diameter of the prepared hydrophobic oleophylic modified superfine glass fiber cotton is normally distributed at 0.15-3.5 mu m for 99.5 percent, the fiber length is normally distributed at 0.5-4.5 mm for 98.5 percent, the maximum aperture of the fiber is less than or equal to 9 mu m and the fiber porosity is greater than or equal to 98.5 percent, and finally the oil product purification filter membrane prepared by the method is in water contact withThe angle reaches 135-165 degrees, the oil-water separation rate reaches 88-96 percent, and the dust holding capacity is 125-225 g/m²。

Detailed Description

The preferred embodiments of the present invention will be described in detail below.