CN-117569112-B - Integrated forming device, glass fiber filter material, and preparation method and application thereof

Abstract

The invention relates to a glass fiber paper/non-woven fabric integrated forming device, a glass fiber filter material, a preparation method and application thereof. The method comprises the steps of stirring and mixing glass fibers, a dispersing agent and water to obtain glass fiber slurry, paving PE or PET non-woven fabrics on a paper forming net, applying the glass fiber slurry to the non-woven fabrics to form glass fiber paper films to obtain non-woven fabric paper films, squeezing the non-woven fabric glass fiber paper films, primarily drying the squeezed non-woven fabric glass fiber paper films to obtain non-woven fabric glass fiber paper, sizing the obtained dry paper films, and secondarily drying and solidifying. The technical problems to be solved are that glass fiber cotton is formed on non-woven fabrics in a settling way through integrated forming of glass fibers and the non-woven fabrics, the non-woven fabrics provide strength for glass fiber filter materials, the light and thin glass fiber filter materials of a production line are formed, and then the thick and thin glass fibers are blended, so that the excellent performances of light and thin glass fiber filter materials, high strength, high dirt holding capacity, high filtering precision and the like are simultaneously realized.

Inventors

• WANG WEI
• SUN YONG
• LIU HUI
• JIA JINSHENG
• DUAN YAN
• Na tianyi
• WANG YIWEI

Assignees

• 中国建筑材料科学研究总院有限公司

Dates

Publication Date

20260512

Application Date

20231228

Claims (3)

1. 1. The preparation method of the glass fiber filter material is characterized by comprising the following steps: 1) Stirring and mixing glass fibers, a dispersing agent and water to obtain glass fiber slurry, wherein the mass ratio of the glass fibers to the dispersing agent is 100:1-2000:1, and the diameter of the glass fibers is 0.1-10 mu m; 2) Laying PET non-woven fabric on a paper forming net, wherein the gram weight of the PET non-woven fabric is 10 g/m 2 ～25g/m 2 ; 3) Applying the glass fiber slurry obtained in the step 1) to PET non-woven fabric for forming a glass fiber paper film to obtain a non-woven fabric paper film, wherein the concentration of the glass fiber slurry is 0.0001 g/ml-0.008 g/ml; 4) Squeezing the non-woven fabric paper film obtained in the step 3) to obtain a non-woven fabric glass fiber paper film, wherein the squeezing load is 5N-20N; 5) Carrying out primary drying on the non-woven glass fiber paper film obtained in the step 4) to obtain non-woven glass fiber paper, wherein the primary drying temperature is 80-150 ℃; 6) Sizing the non-woven fabric glass fiber paper obtained in the step 5), and then performing secondary drying and curing to obtain a glass fiber filter material; The thickness of the glass fiber filtering material is lower than 0.5 mm, the gram weight is lower than 60 g/m 2 , the tensile strength is higher than 24N, the bursting strength is higher than 210 MPa, and the temperature resistance is higher than or equal to 180 ℃; the glass fiber filter material is manufactured through a glass fiber filter material/non-woven fabric integrated forming device, the glass fiber filter material/non-woven fabric integrated forming device comprises a feeding unit and a forming unit, the forming unit is arranged on one side of the feeding unit, the feeding unit comprises a support, a non-woven fabric cloth spreading roller and a non-woven fabric spreading roller are fixedly supported on the support respectively, the forming unit comprises a head box and a forming net which supports the non-woven fabric and moves together with the non-woven fabric, and the head box is arranged above the forming net.
2. 2. The method for producing a glass fiber filter according to claim 1, wherein in the step 3), the rotational speed of the forming wire is 4m/min to 40m/min.
3. 3. The method for preparing the glass fiber filter material according to claim 1, wherein in the step 6), the sizing amount for sizing is 5-10wt% based on the mass of the non-woven glass fiber paper, and the temperature for secondary drying and curing is 120-210 ℃.

Description

Integrated forming device, glass fiber filter material, and preparation method and application thereof Technical Field The invention relates to the technical field of fiber filter materials, in particular to a glass fiber paper/non-woven fabric integrated forming device, a glass fiber filter material, a preparation method and application thereof. Background The related policies of energy conservation and emission reduction guide the rapid development of various fields to the high-precision and light-weight directions. In the fields of automobiles, ships, trucks, thermal power, nuclear power, machining equipment and the like, a control system is more and more precise, and the purity requirements for lubricating oil, engine oil, hydraulic oil and the like used in systems of steam turbines, generators, engines and the like are more and more strict. The filter material in the filter element is a key material for filtering metal particles and pollution impurities in a fluid medium and protecting normal operation of machine equipment, and the advantages of the filtering precision and the pollution-containing capacity performance of the filter material and the high strength and the light weight of the integral filter material are important directions of the development of the filter material in the future. The filter material at the present stage is mainly concentrated between plant fiber and metal fiber filter material. The plant fibers can be mutually entangled and connected through a large number of hydrogen bonds between the plant fibers, so that the wet strength is high, the paper film is simple to form, and the thinness and thinness of the filter paper can be easily realized. However, in the process of filtering engine oil and hydraulic oil, the plant fiber fails due to the excessively high ambient temperature. The strength and the high temperature resistance of the metal fiber filter material meet the requirements of the oil liquid filtration process on the strength and the temperature resistance, but the metal fiber filter material prepared by the metal fiber has high weight and low filtration precision due to high density of the metal material and thicker wire diameter of the metal fiber. The glass fiber is hopeful to replace the traditional plant fiber and metal fiber filter material because of low density, high temperature resistance and wire diameter as low as hundreds of nanometers, and breaks through in the aspects of light weight and high filter precision. However, the surface of the glass fiber has no abundant functional groups, the glass fiber has higher rigidity, the glass fiber is not easy to wind to form a paper film, the wet strength of the glass fiber-based filter material is lower, and the paper forming difficulty is higher. Meanwhile, the thickness of the glass fiber filter material has larger influence on the filtering precision and the sewage containing capacity, so that the thickness and the gram weight of the glass fiber base filter material are larger at present, and the light weight requirement is difficult to realize. Disclosure of Invention The invention mainly aims to provide a glass fiber paper/non-woven fabric integrated forming device, a glass fiber filter material, a preparation method and application thereof, and aims to solve the technical problems that glass fiber cotton is formed on non-woven fabric in a sedimentation mode through glass fiber and non-woven fabric integrated forming, the non-woven fabric provides strength for the glass fiber filter material, the light and thin glass fiber filter material forming of a production line is realized, and the thick and thin glass fibers are blended, so that the light and thin glass fiber filter material, the high tensile strength, the high bursting strength, the high pollution-receiving capacity and the high filtering precision performance are simultaneously realized. The aim and the technical problems of the invention are realized by adopting the following technical proposal. The invention provides a preparation method of a glass fiber filter material, which comprises the following steps: 1) Stirring and mixing glass fibers, a dispersing agent and water to obtain glass fiber slurry; 2) Paving PE or PET non-woven fabrics on a paper forming net; 3) Applying the glass fiber slurry obtained in the step 1) to PE or PET non-woven fabrics to form a glass fiber paper film, so as to obtain the non-woven fabric paper film; 4) Squeezing the non-woven fabric paper film obtained in the step 3) to obtain a non-woven fabric glass fiber paper film; 5) Carrying out primary drying on the non-woven glass fiber paper film obtained in the step 4) to obtain non-woven glass fiber paper; 6) And (3) sizing the non-woven fabric glass fiber paper obtained in the step (5), and then performing secondary drying and curing to obtain the glass fiber filter material. Preferably, in the preparation method of the glass fiber filter material, in the step 1), the ma