CN115300996A - High-temperature-resistant hydraulic composite glass fiber filter material, preparation process thereof and composite device - Google Patents
High-temperature-resistant hydraulic composite glass fiber filter material, preparation process thereof and composite device Download PDFInfo
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- CN115300996A CN115300996A CN202210996236.XA CN202210996236A CN115300996A CN 115300996 A CN115300996 A CN 115300996A CN 202210996236 A CN202210996236 A CN 202210996236A CN 115300996 A CN115300996 A CN 115300996A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
- B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2003—Glass or glassy material
- B01D39/2017—Glass or glassy material the material being filamentary or fibrous
- B01D39/202—Glass or glassy material the material being filamentary or fibrous sintered or bonded by inorganic agents
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- 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
- B32B29/00—Layered products comprising a layer of paper or cardboard
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- 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
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/02—Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
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- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
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- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
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- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
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- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
Abstract
The invention belongs to the technical field of preparation and application of composite glass fiber filter materials, and particularly relates to a high-temperature-resistant hydraulic composite glass fiber filter materialAnd a preparation process and a composite device thereof. The high-temperature-resistant hydraulic composite glass fiber filter material comprises: the middle layer is a glass fiber filter paper layer, two sides of the glass fiber filter paper layer are non-woven fabric layers, and the glass fiber filter paper layer and the non-woven fabric layers are compounded and bonded by overheating molten adhesive; the glass fiber filter paper is prepared from 475 medium-alkali glass fibers; the non-woven fabric layer is a PET filament non-woven fabric, the quantitative sum of the two composite layers is less than or equal to 65g/m 2 Preferably, the basis weight of each layer is 25g/m 2 Air permeability of more than or equal to 3000L/m 2 (ii) a The composite two layers were of the same basis weight. The hot melt adhesive is modified polyamide resin. The invention provides a hydraulic composite glass fiber filter material which has high temperature resistance up to 175 ℃, high air permeability, high filterability and long service life. The invention also provides a preparation method and a device thereof.
Description
Technical Field
The invention belongs to the technical field of preparation and application of composite glass fiber filter materials, and particularly relates to a high-temperature-resistant hydraulic composite glass fiber filter material, and a preparation process and a composite device thereof.
Background
In recent 20 years, with the rapid development of Chinese economy, the construction of capital construction projects has increased rapidly, and the engineering machinery industry has developed rapidly. Engineering machinery products typified by excavators have also been rapidly developed. Although affected by epidemic situations, the engineering machinery industry in China is still at a higher level since 2020, the demand of downstream industries is vigorous, and the sales acceleration of the excavator is continuously kept high. 1-9 months in 2020, the accumulated sales of the excavator in China 236508 is increased by 31.98% in the same period of the last year, and the increase rate is increased by 17.29% in the same period of the last year.
With the expansion of the application requirements of engineering machinery equipment over the years, the engineering machinery industry has a large market reserve, the industrial chain of related matched products is gradually mature, and the after-sale market of the engineering machinery is developed vigorously. The expansion of after-market demands gradually cultivates more mature and standard application habits of mechanical product maintenance, and further promotes the rapid development of main part industries. The hydraulic system filter is an important functional part with easy-to-consume property, and can be developed in the after-sale market demand of the engineering machinery which is gradually standardized and has wide market capacity.
The core material of the hydraulic system filter of the engineering machinery is the filtering material in the filter, in the early stage, the filtering material uses a stainless steel net as the filtering material, along with the increase of the precision of mechanical manufacturing, the clearance between equipment components is smaller and smaller, the filtering precision of the stainless steel net cannot meet the requirement, and the stainless steel net is gradually replaced by a glass fiber composite filtering material with higher precision in recent years. Because engineering machinery is outdoor work mostly, and continuous working time is unfixed, sometimes the working time is longer, and the outdoor working temperature is higher, the hydraulic oil of work often exceeds 90 degrees, therefore for the security of equipment, host computer factory proposes that the filter should endure temperature more than 150 degrees, therefore the filter material is able to endure temperature more than 150 degrees. The existing composite non-woven fabric material usually uses PET impregnated non-woven fabric and hot-rolled non-woven fabric, and through a high-temperature baking test, the two materials can be subjected to thermal shrinkage on site under the condition of 150 ℃ for a long time, so that delamination occurs between the non-woven fabric and glass fiber paper. In addition, the hot melt adhesive for compounding is generally made of high-density polyethylene, and can be softened and lose adhesive force under the condition of baking at 150 ℃ to cause separation of the non-woven fabric and the glass fiber layer. PET flooding non-woven fabrics and hot rolling non-woven fabrics use the reclaimed materials preparation usually, can not the doping of the other chemical industry materials of low melting point of degree in the manufacturing process, lead to whole resistant difference in temperature, 150 ℃ toasts can shrink. In order to facilitate the compounding, hot melt adhesive high-density polyethylene is sprayed on one side in the manufacturing process, and the hot melt adhesive high-density polyethylene passes through a hot pressing roller when being compounded with glass fibers, so that the high-density polyethylene is melted and bonded with the glass fiber materials. High Density Polyethylene (HDPE) is a highly crystalline, non-polar thermoplastic resin. The crystallinity is 80-90%, the softening point is 125-135 ℃, so the high-density polyethylene can not meet the requirement of the use temperature of 150 ℃.
In the 5 th period of the 39 th volume of the 2022 year 5 month of "preparation process and performance (bear morning Cheng Ji-Jiu Wang) of a high peel strength and air permeability glass fiber/spunbonded non-woven fabric composite filter material of the composite material, the published article mentions that the hot melt adhesive resin particles are uniformly loaded on the spunbonded fabric in the form of superfine fibers by a melt-blown technology, and then the hot rolling composite technology is utilized to be compounded with the glass fiber filter material, so that the glass fiber/spunbonded composite filter material with high peel strength and basically unchanged air permeability is obtained, the temperature can reach 150 ℃, but the sealant can be used in the production process of a high-end hydraulic filter, and in order to ensure that the curing speed of the sealant is high, the curing temperature usually exceeds 150 ℃, so that the composite bonding layer is damaged; the filter is manufactured by hydraulic glass fiber, the last process of the filter is to spray paint on the shell, and the temperature of the paint is over 150 ℃, so the application of the filter is greatly limited.
CN111495036B discloses a glass fiber composite filter material, a preparation method and an application thereof, in the invention, a water-based adhesive is distributed between the glass fiber filter material and an organic filter material, the water-based treatment agent comprises water-based polyamide emulsion (PA), compared with the existing hot melt adhesive, the water-based adhesive with smaller particle size is not easy to block the inner pores of the glass fiber filter material, and the air permeability and the filtration efficiency of the composite filter material are ensured, but the water-based adhesive is easy to have the problem of material penetration in the use process, namely sprayed water-based adhesive, in the adhesion process, the adhesive can penetrate through PET non-woven fabric with larger porosity, so that adhesive particles appear outside the coiled material, and the adhesive particles are easy to fall off and enter a hydraulic oil system to cause pollution; and then the latex needs to be dried by hot air or is dried when in contact after the compounding is finished, so that the aging degree of the latex in the glass fiber filtering layer is improved, and the strength is reduced.
CN110465134B discloses a novel composite filter material and a preparation method thereof, the novel composite filter material at least comprises a support layer, a film coating layer and an electrostatic micro-filter layer, the support layer can be a non-woven fabric layer of a glass fiber layer and other fibers, the electrostatic micro-filter layer is mainly a non-woven fabric which is melt-blown and processed with electricity by an electret polymer, the non-woven fabric is not compounded by a hot melt adhesive powder spraying method between layers, the problems that the existing filter material is not ideal in filter effect and short in service life are solved, the electrostatic electret filter material is suitable for air filtration and is not suitable for oil filtration, static electricity of the material after oil filtration can disappear, and the efficiency is greatly reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a hydraulic composite glass fiber filter material which has high temperature resistance up to 175 ℃, high air permeability, high filterability and long service life. The invention also provides a preparation method and a device thereof.
The high-temperature-resistant hydraulic composite glass fiber filter material comprises the following components in percentage by weight: the middle layer is a glass fiber filter paper layer, two sides of the glass fiber filter paper layer are non-woven fabric layers, and the glass fiber filter paper layer and the non-woven fabric layers are compounded and bonded by adopting overheating melt adhesive;
the glass fiber filter paper is prepared from 475 medium-alkali glass fibers, and the beating degree is 15-44 degrees SR;
the non-woven fabric layer is a PET filament non-woven fabric, and the fibers of the PET filament non-woven fabric are 4D-10D, preferably 5D and 5D, and are optimal in uniformity and strength; the quantitative sum of the two composite layers is less than or equal to 65g/m 2 Preferably, the basis weight of each layer is 25g/m 2 Air permeability is more than or equal to 3000L/m 2 (ii) a The composite layers were of the same quantitative.
The hot melt adhesive is modified polyamide resin, and the hot melt sprayed fiber is 0.2-0.4mm.
The preparation steps of the modified polyamide resin are as follows: the modified polyamide resin is prepared by reacting raw materials of dimer acid, co-polymerized acid, ethylenediamine and piperazine at 200-250 ℃ for 4-5h, and finally synthesizing dimer acid type polyamide resin under vacuum conditions, wherein the sum of the molar mass of the dimer acid and the hydroxyl group of the co-polymerized acid and the molar mass of the ethylenediamine and the amino group of the piperazine is 1-1. When the modified polyamide resin is used, after the modified polyamide resin is heated and melted, the modified polyamide resin is manufactured into molten fiber filaments with the diameter of 0.2-0.4mm by hot compressed air through a spinneret plate, and the molten fiber filaments are sprayed between non-woven fabrics and glass fiber filter paper in the hot open period (before cooling and solidification) of the fiber filaments to be bonded together.
The melting point of the modified polyamide resin is 220-230 ℃; the viscosity is within 6000-8000mpa.s at 250 ℃.
The preparation process of the high-temperature-resistant hydraulic composite glass fiber filter material comprises the following steps: heating and melting PA66 at 240-260 ℃ by adopting a glue spraying compounding mode, and making the molten fiber with the diameter of 0.2-0.4mm by using hot compressed air through a spinneret plate; spraying the molten fiber between the non-woven fabric and the glass fiber filter paper before cooling and solidifying, and then bonding the molten fiber and the glass fiber filter paper together through a composite compression roller to prepare the high-temperature-resistant hydraulic composite glass fiber filter material.
The preparation process of the high-temperature-resistant hydraulic composite glass fiber filter material is characterized by comprising the following steps of: the method comprises the following steps: heating and melting PA66 at 240-260 ℃ by adopting a glue spraying compounding mode, and making the molten fiber with the diameter of 0.2-0.4mm by using hot compressed air through a spinneret plate; and spraying the molten fiber into the space between the non-woven fabric and the glass fiber filter paper before the molten fiber is cooled and solidified, and then bonding the molten fiber and the non-woven fabric and the glass fiber filter paper together through a composite compression roller to obtain the high-temperature-resistant hydraulic composite glass fiber filter material.
The preparation device of the high-temperature-resistant hydraulic composite glass fiber filter material comprises an unreeling device A (1), a spraying device (2), a glue spraying system (3), an unreeling device B (4) and a composite glass fiber filter material reeling device (5), wherein the unreeling device A and the spraying device B are sequentially connected according to the sequence of raw material routing.
The glue spraying system (3) comprises an extruder (6), the extruder (6) is connected with a first glue machine (7) and a second glue machine (8), the first glue machine (7) and the second glue machine (8) are connected with a glue conveying pipe (11), and the glue conveying pipe (11) is connected with a spray gun (12). The spraying device (2) adopts a compound roller to extrude and compound, and the glue spraying system (3) sprays modified polyamide resin hot melt adhesive through a spinneret plate by hot compressed gas at 250 ℃; glass fiber filter paper is placed at the unwinding device A (1), and a non-woven fabric layer is placed at the unwinding device B (4).
An extruder electric control cabinet (9) and a host electric control cabinet (10) are arranged outside the extruder (6).
Other specific structures of the compounding device of the preparation device of the high-temperature-resistant hydraulic composite glass fiber filter material are the prior art, such as a glue machine, a glue box and the like are prepared, a glue spraying system can spray the glue through a spinneret plate, and the like, and the technical problems to be solved are the same, so that the discussion is not continued.
Specifically, the preparation process of the high-temperature-resistant hydraulic composite glass fiber filter material comprises the following steps:
(1) Heating the modified polyamide resin into a molten state through an extruder, and extruding the molten polyamide resin into a rubber box of a first rubber machine and a second rubber machine for later use; the temperatures of six temperature zones of the extruder are as follows: the first temperature zone is 150-170 ℃, the second temperature zone is 160-180 ℃, the third-fifth temperature zone is 175-195 ℃ and the sixth temperature zone is 220-240 ℃; the storage temperature of the rubber box is as follows: 220 to 240 ℃;
(2) Adjusting the temperature of the rubber delivery pipe to 210-230 ℃, and adjusting the temperature of the spray gun to 220-240 ℃ for later use;
(3) Glass fiber filter paper is placed at the unwinding device A, and a non-woven fabric layer is placed at the unwinding device B; starting the first glue machine and the second glue machine to compound; the glue spraying amount during compounding is 4-8g/m 2 (ii) a The compounding speed is 80-100m/min, and the high-temperature resistant hydraulic composite glass fiber filter material is prepared.
According to the high-temperature-resistant hydraulic composite glass fiber filter material, the middle layer is the filter glass fiber paper prepared from 475 medium-alkali glass fibers, the two sides are compounded with the PET filament non-woven fabrics, the PET filament non-woven fabrics are 5D PET filament non-woven fabrics which are pure PET, and the quantitative optimization is 25g/m 2 Air permeability of 10000L/m 2 S or more; the modified polyamide resin is adopted as the hot melt adhesive, so that the thermal deformation cannot occur at 175 ℃; in use, it is sprayed into the composite layers for bonding. In order to ensure that the non-woven fabric and the filtering glass fiber are firmly bonded and a large number of filtering channels are not blocked, the glue spraying compounding mode is selected, namely, the modified polyamide resin is heated and melted, hot compressed air passes through a spinneret plate, the hot melt glue modified polyamide resin is made into molten fiber filaments with the diameter of 0.2-0.4mm, and the molten fiber filaments are sprayed between the non-woven fabric and the glass fiber paper in the hot opening period (before cooling and solidification) of the fiber filaments and are bonded together through a compounding press roller.
Compared with the prior art, the invention has the following beneficial effects:
(1) The material obtained by the invention is a high-temperature-resistant composite material, has good high-temperature resistance, can resist high temperature up to 175 ℃, meets the requirements of downstream customers, and widens the application range.
(2) The preparation process of the high-temperature-resistant hydraulic composite glass fiber filter material adopts the outer non-woven fabric layer and the middle glass fiber filter paper layer, and combines the composite process through a compound machine, so that the operation is simple, the productivity is improved by 5-8 times, and the productivity is increased to 100m/min.
(3) The compounding device of the composite glass fiber filter material adopts a compounding machine and a glue spraying system to be combined, adopts the modified hot melt adhesive PA66, has good compounding effect, and further ensures that the non-woven fabric layer and the glass fiber filter paper layer are not easily separated.
Drawings
FIG. 1 is a schematic structural diagram of a device for preparing a high temperature resistant hydraulic composite glass fiber filter material according to the present invention;
FIG. 2 is a schematic structural diagram of a glue spraying system of the compound machine of the present invention;
in the figure: 1. an unwinding device A; 2. a spraying position; 3. a glue spraying system; 4. an unwinding device B; 5. a composite glass fiber filter material coiling device; 6. an extruder; 7. a first glue machine; 8. a glue machine II; 9. an extruder electric control cabinet; 10. a host electric control cabinet; 11. a rubber delivery pipe; 12. a spray gun.
Detailed Description
The present invention is further illustrated by the following examples, but is not limited to these examples. The spirit and scope of the present invention will be fully understood from the examples, further understanding the process features of the present invention.
As shown in fig. 1, the preparation device of the high temperature resistant hydraulic composite glass fiber filter material comprises an unwinding device a (1), a spraying device (2), a glue spraying system (3), an unwinding device B (4), and a composite glass fiber filter material rolling device (5), which are sequentially connected according to the sequence of raw material routing.
As shown in fig. 2, the glue spraying system (3) comprises an extruder (6), the extruder (6) is connected with a first glue machine (7) and a second glue machine (8), the first glue machine (7) and the second glue machine (8) are connected with a glue conveying pipe (11), and the glue conveying pipe (11) is connected with a spray gun (12).
An extruder electric control cabinet (9) and a host machine electric control cabinet (10) are arranged outside the extruder (6).
The invention is further illustrated by the following examples by using the above-mentioned preparation device of the high temperature resistant hydraulic composite glass fiber filter material.
Example 1
The high-temperature-resistant hydraulic composite glass fiber filter material comprises: the middle layer is a 475 medium alkali glass fiber filter paper layer, and the beating degree is 40 DEG SR; the composite two-layer PET filament non-woven fabric is 5D fiber with the quantitative sum of 50g/m 2 Degree of air permeabilityIs 10000L/m 2 s；
The preparation process of the high-temperature-resistant hydraulic composite glass fiber filter material comprises the following steps:
(1) Heating the modified polyamide resin into a molten state through an extruder, and extruding the molten polyamide resin into a rubber box of a first rubber machine and a second rubber machine for later use; the temperatures of six temperature zones of the extruder are as follows: the first temperature zone is 160 ℃, the second temperature zone is 170 ℃, the third-fifth temperature zone is 185 ℃, and the sixth temperature zone is 230 ℃; the storage temperature of the rubber box is as follows: 220 ℃;
(2) Adjusting the temperature of the rubber delivery pipe to 220 ℃, and adjusting the temperature of the spray gun to 230 ℃ for later use;
(3) Glass fiber filter paper is placed at the unwinding device A, and a non-woven fabric layer is placed at the unwinding device B; starting the first glue machine and the second glue machine to compound; the glue spraying amount during compounding is 6g/m 2 (ii) a The compounding speed is 90m/min, and the high-temperature-resistant hydraulic composite glass fiber filter material is prepared.
Example 2
The high-temperature-resistant hydraulic composite glass fiber filter material comprises: the middle layer is a 475 medium alkali glass fiber filter paper layer, and the beating degree is 44 DEG SR; the composite two-layer PET filament non-woven fabric is 10D fiber with the quantitative of 65g/m 2 Air permeability of 8000L/m 2 s；
The preparation process of the high-temperature-resistant hydraulic composite glass fiber filter material comprises the following steps:
(1) Heating the modified polyamide resin into a molten state through an extruder, and extruding the molten polyamide resin into a rubber box of a first rubber machine and a second rubber machine for later use; the temperatures of six temperature zones of the extruder are as follows: the first temperature zone is 170 ℃, the second temperature zone is 180 ℃, the third-fifth temperature zone is 195 ℃ and the sixth temperature zone is 240 ℃; the storage temperature of the rubber box is as follows: 240 ℃;
(2) Adjusting the temperature of the rubber delivery pipe to 230 ℃, and adjusting the temperature of the spray gun to 240 ℃ for later use;
(3) Glass fiber filter paper is placed at the unwinding device A, and a non-woven fabric layer is placed at the unwinding device B; starting the first glue machine and the second glue machine for compounding; the glue spraying amount during compounding is 8g/m 2 (ii) a The compounding speed is 100m/min, and the high-temperature resistant hydraulic composite glass fiber filter material is prepared.
Example 3
The high temperature resistant hydraulic compoundGlass fiber filter material: the middle layer is a 475 medium alkali glass fiber filter paper layer, and the beating degree is 15 DEG SR; the composite two-layer PET filament non-woven fabric is 4D fiber with the quantitative sum of 45g/m 2 Air permeability of 5000L/m 2 s；
The preparation process of the high-temperature-resistant hydraulic composite glass fiber filter material comprises the following steps:
(1) Heating the modified polyamide resin into a molten state through an extruder, and extruding the molten polyamide resin into a rubber box of a first rubber machine and a second rubber machine for later use; the temperatures of six temperature zones of the extruder are as follows: the first temperature zone is 150 ℃, the second temperature zone is 160 ℃, the third-fifth temperature zone is 175 ℃, and the sixth temperature zone is 220 ℃; the storage temperature of the rubber box is as follows: 220 ℃;
(2) Adjusting the temperature of the rubber delivery pipe to 210 ℃ and the temperature of the spray gun to 220 ℃ for later use;
(3) Glass fiber filter paper is placed at the unwinding device A, and a non-woven fabric layer is placed at the unwinding device B; starting the first glue machine and the second glue machine for compounding; the glue spraying amount during compounding is 4g/m 2 (ii) a The compounding speed is 80m/min, and the high-temperature-resistant hydraulic composite glass fiber filter material is prepared.
Comparative example 1
A composite glass fiber filter material: the middle layer is a 475 medium alkali glass fiber filter paper layer, and the beating degree is 40 DEG SR; the composite two-layer PET filament non-woven fabric is common PET impregnated non-woven fabric (Wenzhou Jinyu OB-40 non-woven fabric), and the quantitative sum is 50g/m 2 ；
A preparation process of a composite glass fiber filter material comprises the following steps:
(1) Heating the modified polyamide resin into a molten state through an extruder, and extruding the molten polyamide resin into a rubber box of a first rubber machine and a second rubber machine for later use; the temperatures of six temperature zones of the extruder are as follows: the first temperature zone is 160 ℃, the second temperature zone is 170 ℃, the third-fifth temperature zone is 185 ℃, and the sixth temperature zone is 230 ℃; the storage temperature of the rubber box is as follows: 220 ℃;
(2) Adjusting the temperature of the rubber delivery pipe to 220 ℃, and adjusting the temperature of the spray gun to 230 ℃ for later use;
(3) Glass fiber filter paper is placed at the unwinding device A, and a non-woven fabric layer is placed at the unwinding device B; starting the first glue machine and the second glue machine to compound; the glue spraying amount during compounding is 6g/m 2 (ii) a The compounding speed is 90m/min to prepare the compoundA composite glass fiber filter material.
Comparative example 2
A composite glass fiber filter material: the middle layer is a 475 medium alkali glass fiber filter paper layer, and the beating degree is 40 DEG SR; the composite two-layer PET filament non-woven fabric is common PET hot-rolled non-woven fabric (Yangzhou Rongwei IB-25), and the quantitative sum is 50g/m 2 ；
A preparation process of a composite glass fiber filter material comprises the following steps:
(1) Heating the modified polyamide resin into a molten state through an extruder, and extruding the molten polyamide resin into a rubber box of a first rubber machine and a second rubber machine for later use; the temperatures of six temperature zones of the extruder are as follows: the first temperature zone is 160 ℃, the second temperature zone is 170 ℃, the third-fifth temperature zone is 185 ℃, and the sixth temperature zone is 230 ℃; the storage temperature of the rubber box is as follows: 220 ℃;
(2) Adjusting the temperature of the rubber delivery pipe to 220 ℃, and adjusting the temperature of the spray gun to 230 ℃ for later use;
(3) Glass fiber filter paper is placed at the unwinding device A, and a non-woven fabric layer is placed at the unwinding device B; starting the first glue machine and the second glue machine for compounding; the glue spraying amount during compounding is 6g/m 2 (ii) a The compounding speed is 90m/min, and the composite glass fiber filter material is prepared.
The composite glass fiber filter materials prepared in the above examples 1 to 3 and comparative examples 1 to 2 were tested for their performance according to ISO16889 standard, and the test results are shown in table 1. The high temperature resistance test condition is that whether the bonding state has shrinkage phenomenon is observed after soaking for 500 hours at the test temperature of 150 ℃, if the temperature is not increased continuously until the shrinkage state occurs, and if the shrinkage occurs, the temperature is reduced continuously until the temperature of the shrinkage state occurs, and the temperature is the high temperature resistance temperature; the service life is determined at a test temperature of 40 ℃, an end pressure of 80Kpa, a test flow rate of 4L/min, BUGL (ash concentration): 10mg/L.
TABLE 1 Performance results
From the above, it can be seen that comparative examples 1 and 2 use general PET-impregnated nonwoven fabrics and hot-rolled nonwoven fabrics, and are poor in temperature resistance.
Of course, the foregoing is only a preferred embodiment of the invention and should not be taken as limiting the scope of the embodiments of the invention. The present invention is not limited to the above examples, and equivalent changes and modifications made by those skilled in the art within the spirit and scope of the present invention should be construed as being included in the scope of the present invention.
Claims (8)
1. The utility model provides a fine filter media of high temperature resistant hydraulic compound glass which characterized in that: the middle layer is a glass fiber filter paper layer, two sides of the glass fiber filter paper layer are non-woven fabric layers, and the glass fiber filter paper layer and the non-woven fabric layers are compounded and bonded by overheating molten adhesive;
the glass fiber filter paper is prepared from 475 medium-alkali glass fibers, and the beating degree is 15-44 degrees SR;
the non-woven fabric layer is a PET filament non-woven fabric, the fibers of the PET filament non-woven fabric are 4D-10D, the sum of the quantitative sum of two layers is less than or equal to 65g per square meter, and the air permeability is more than or equal to 3000L per square meter;
the hot melt adhesive is modified polyamide resin, and the hot melt sprayed fiber is 0.2-0.4mm.
2. The high temperature resistant hydraulic composite fiberglass filter material of claim 1, wherein: the fibers of the PET filament nonwoven fabric were 5D.
3. The high temperature resistant hydraulic composite glass fiber filter material of claim 1, wherein: the modified polyamide resin is prepared by reacting raw materials of dimer acid, co-acid, ethylenediamine and piperazine at 200-250 ℃ for 4-5h, and finally synthesizing dimer acid type polyamide resin under vacuum condition, wherein the sum of the molar mass of the dimer acid and the hydroxyl group of the co-acid and the molar mass of the ethylenediamine and the amino group of the piperazine is 1-1.
4. The high temperature resistant hydraulic composite glass fiber filter material of claim 3, wherein: the melting point of the modified polyamide resin is 220-230 ℃; the viscosity is 6000-8000mpa.s at 250 ℃.
5. The preparation process of the high temperature resistant hydraulic composite glass fiber filter material of any one of claims 1 to 4, which is characterized in that: the method comprises the following steps: the PA66 is heated and melted at 240-260 ℃ by adopting a glue spraying compounding mode, and then is made into molten fiber with the diameter of 0.2-0.4mm by using hot compressed air through a spinneret plate; spraying the molten fiber between the non-woven fabric and the glass fiber filter paper before cooling and solidifying, and then bonding the molten fiber and the glass fiber filter paper together through a composite compression roller to prepare the high-temperature-resistant hydraulic composite glass fiber filter material.
6. The preparation device of the high temperature resistant hydraulic composite glass fiber filter material of claim 1, characterized in that: the glass fiber composite filter material coiling device comprises an unwinding device A (1), a spraying device (2), a glue spraying system (3), an unwinding device B (4) and a composite glass fiber filter material coiling device (5), which are sequentially connected according to the sequence of raw material routing.
7. The device for preparing the high temperature resistant hydraulic composite glass fiber filter material according to claim 6, wherein: the glue spraying system (3) comprises an extruder (6), the extruder (6) is connected with a first glue machine (7) and a second glue machine (8), the first glue machine (7) and the second glue machine (8) are connected with a glue conveying pipe (11), and the glue conveying pipe (11) is connected with a spray gun (12).
8. The device for preparing the high temperature resistant hydraulic composite glass fiber filter material according to claim 7, wherein: an extruder electric control cabinet (9) and a host machine electric control cabinet (10) are arranged outside the extruder (6).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115852745A (en) * | 2022-12-05 | 2023-03-28 | 南京玻璃纤维研究设计院有限公司 | Preparation method of glass fiber hydraulic filter paper |
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| CN2522453Y (en) * | 2001-12-17 | 2002-11-27 | 天津市轻工业造纸技术研究所 | Passenger cabin efficient air-filtering paper |
| CN102559129A (en) * | 2010-12-07 | 2012-07-11 | 上海轻工业研究所有限公司 | Polyamide hot melt adhesive and application thereof |
| CN112976761A (en) * | 2019-12-02 | 2021-06-18 | 杭州特种纸业有限公司 | Compound filter media glueing set composite |
| CN113813698A (en) * | 2021-09-24 | 2021-12-21 | 南京玻璃纤维研究设计院有限公司 | Filter material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2522453Y (en) * | 2001-12-17 | 2002-11-27 | 天津市轻工业造纸技术研究所 | Passenger cabin efficient air-filtering paper |
| CN102559129A (en) * | 2010-12-07 | 2012-07-11 | 上海轻工业研究所有限公司 | Polyamide hot melt adhesive and application thereof |
| CN112976761A (en) * | 2019-12-02 | 2021-06-18 | 杭州特种纸业有限公司 | Compound filter media glueing set composite |
| CN113813698A (en) * | 2021-09-24 | 2021-12-21 | 南京玻璃纤维研究设计院有限公司 | Filter material |
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| CN115852745A (en) * | 2022-12-05 | 2023-03-28 | 南京玻璃纤维研究设计院有限公司 | Preparation method of glass fiber hydraulic filter paper |
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