CN112625385A - Preparation method of clean type mud-shaped filler - Google Patents
Preparation method of clean type mud-shaped filler Download PDFInfo
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- CN112625385A CN112625385A CN202011553729.3A CN202011553729A CN112625385A CN 112625385 A CN112625385 A CN 112625385A CN 202011553729 A CN202011553729 A CN 202011553729A CN 112625385 A CN112625385 A CN 112625385A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/18—Homopolymers or copolymers of nitriles
- C08L33/20—Homopolymers or copolymers of acrylonitrile
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
- D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/22—Polymers or copolymers of halogenated mono-olefins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/26—Polymers or copolymers of unsaturated carboxylic acids or derivatives thereof
- D06M2101/28—Acrylonitrile; Methacrylonitrile
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a preparation method of a clean type mud-shaped filler, which comprises the following steps: A. taking a proper amount of artificial fiber for chopping; B. mixing the rayon fiber subjected to the step A with the concentrated solution; the concentrated solution is polytetrafluoroethylene emulsion with the concentration of 50 percent; the mixing mode is as follows: according to the weight portion, the artificial fiber accounts for 10% -15%, the rest is concentrated solution, the fiber is placed into an impregnation barrel, and the fiber and the concentrated solution are mixed and stirred uniformly; C. b, drying the artificial fiber treated in the step B; D. mixing and stirring the dried fiber, lubricating grease and inorganic filler; F. and (7) packaging and warehousing. The invention has the beneficial effects that: all the materials are qualified safe materials, and the prepared mud-shaped filler has clean color, good fluidity and self-lubricating property and good sealing effect.
Description
Technical Field
The invention relates to the technical field of sealing materials, in particular to a preparation method of a clean mud-shaped filler.
Background
The mud-shaped filler is a novel dynamic sealing element. The 'twelfth international technical exchange for friction sealing materials and product exhibition discourse' published in 5 months in 2010 discloses a 'novel dynamic sealing element-mud-shaped filler' authored by the Wangshijiang, wherein the mud-shaped filler is introduced: the mud-shaped filler is a clay-shaped substance formed by mixing high-grade synthetic fiber with various oils, grease and viscose, is a special mixture of the fiber and the viscose, and needs to be injected into a stuffing box of equipment through a high-pressure gun when in use. The basic sealing principle is as follows: during the use of the mud-shaped filler, the shearing force generated between the fiber and the shaft in the middle of the mud-shaped filler due to movement enables the fiber to be wound on the shaft gradually along with the operation of the shaft, a rotating layer is formed at first, the shearing force generated by the rotation of the shaft to the fiber is smaller along with the gradual increase of the rotating layer and farther away from the shaft, the capability of the fiber winding shaft is poorer, finally the fiber is not wound on the shaft after being away from the shaft for a certain distance, so that a boundary layer is formed, the inner walls of the fiber and the filler box are kept relatively static outside the boundary layer, and the mud-shaped filler is operated along with the shaft at the part of the boundary layer close to the shaft. The formation of the boundary layer enables the stuffing not to directly rub the inner walls of the shaft and the stuffing box but to rotate in the mud stuffing, so that the abrasion of the shaft and the inner walls of the stuffing box is avoided. Due to the viscous characteristic of the mud-shaped filler, after a boundary layer is formed along with the movement of the shaft each time, two ends of the boundary layer can be automatically bonded, so that the boundary layer is formed to have non-repeatability, the boundary layer is not only a surface but also an area, fibers are criss-crossed in the area to form a layer of small boundary layers, just the small boundary layers are like a labyrinth, and the special structure has the effect that a fluid medium is sealed in the boundary layer formed by the filler end ring and the mud-shaped filler, so that zero leakage in the true sense is realized. Because the friction coefficient of the adopted raw materials is low, the heat generated by the friction motion in the filler is far less than the heat generated by the shaft friction of the woven filler, the less the friction work is, the less the energy consumption is, the service life of the mud-shaped filler is greatly prolonged, and the energy consumption of the motor is greatly reduced. The actual application scenes of the mud-shaped filler are roughly two, one of the scenes is mainly applied to the pharmaceutical and food industry, and the materials are required to be non-toxic and pollution-free, so that the requirements of safety regulations of food and drugs are met. Graphite is commonly added into the existing mud-like filler, and sealing is realized by depending on the physical characteristics of the vermicular graphite, so that the requirements of corresponding laws and regulations cannot be met.
Disclosure of Invention
In order to overcome the problems, the invention provides a preparation method of a clean mud-shaped filler, which abandons the use of graphite, completely adopts safe materials for preparation, and can meet the requirements of nontoxic and pollution-free food and drug safety regulations.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a preparation method of a clean type mud-shaped filler comprises the following steps:
A. taking a proper amount of artificial fiber for chopping;
B. mixing the rayon fiber subjected to the step A with the concentrated solution; the concentrated solution is polytetrafluoroethylene emulsion with the concentration of 50 percent; the mixing mode is as follows: according to the weight portion, the artificial fiber accounts for 10% -15%, the rest is concentrated solution, the fiber is placed into an impregnation barrel, and the fiber and the concentrated solution are mixed and stirred uniformly;
C. b, drying the artificial fiber treated in the step B;
D. mixing and stirring the dried fiber, lubricating grease and inorganic filler;
F. and (7) packaging and warehousing.
Preferably, in step a, the rayon fibers comprise polytetrafluoroethylene or polyacrylonitrile long fibers.
Preferably, in the step A, the staple fibers have a length of 6 to 10 mm.
Preferably, in step a, the chopped rayon fibers are subjected to an opening treatment.
Preferably, in step B, the concentration of the polytetrafluoroethylene emulsion is 50%.
Preferably, in the step C, the fibers uniformly mixed and stirred with the concentrated solution are flatly spread in an oven for baking at the temperature of 70-80 ℃ for 8-12 hours.
Preferably, in step C, the oven door is opened during baking.
Preferably, in step D, the grease is a white or colorless transparent grease.
Preferably, in the step D, the total amount of the artificial fiber, the lubricating grease, the tetrafluoro crushed material and the inorganic filler is 100 percent, wherein the artificial fiber accounts for 50 +/-5 percent, the lubricating grease accounts for 35 +/-5 percent, and the tetrafluoro crushed material accounts for 10 +/-5 percent; and (3) putting various materials into a stirrer to be stirred for 20-30 minutes.
Preferably, the materials need to be cooled in the stirring process of the stirrer.
Preferably, between step D and step F, further comprising step E: and D, putting the material processed in the step D into a high-speed rotary stirrer to be stirred into fluffy small strip-shaped fibers.
According to the preparation method of the clean type mud-shaped filler, the selected material comprises artificial fiber, such as common polytetrafluoroethylene or polyacrylonitrile long fiber. Carbon fibers can also be used, but the clean type mud-like filler of the finished product is dull in color and is easily mistaken for pollution due to the influence of the color of the carbon fibers. The use of artificial fiber has the advantages of small difference of fiber thickness and specification, and better cleanliness and strength than natural fiber. After the artificial fibers are chopped to a proper length by using cutting equipment, the fibers are scattered and loosened by using manpower or a wool combining machine, so that the agglomeration is avoided. Because the surface of the artificial fiber is generally very smooth and difficult to adhere to other substances, polytetrafluoroethylene emulsion is required to be wrapped outside the artificial fiber so as to increase the limiting adhesivity. Then, drying the artificial fiber, controlling the temperature to be 70-80 ℃ during baking, keeping the baking time to be 8-12 hours, and in order to keep the artificial fiber clean, padding white paper in the baking oven, and spreading the artificial fiber on the white paper; to accelerate drying, the cover of the oven may be opened. The dried fiber can be mixed and stirred with lubricating grease, the tetrafluoro crushed material and the inorganic filler. The PTFE crushed aggregates are added in the scheme, the self-lubricating effect of the PTFE crushed aggregates is fully utilized, the finished product mud-shaped filler keeps sufficient fluidity, the self-lubricating effect can be achieved, surrounding parts can be fully wrapped, and a good sealing effect is formed. The inorganic filler can be selected from water-insoluble salts such as barium sulfate, zinc carbonate, and calcium carbonate, preferably white. Materials can be heated up in the stirring process of the stirrer, and necessary cooling treatment is needed to avoid the influence of preheating and yellowing of the inorganic filler on the visual sense of a finished product. The stirred mixed materials are stirred by a rotary stirrer at a high speed to form fluffy and dispersed fiber strips, and then the extrusion effect of the product can be tested by a filling gun. If the extrusion can be carried out under the pressure of 3-5 Mpa, the batch of products are qualified and can be packaged and warehoused. If extrusion is not possible, the tetrafluoro crushed material can be properly added and beaten again until the product is qualified.
The invention has the beneficial effects that: all the materials are qualified safe materials, and the prepared mud-shaped filler has clean color, good fluidity and self-lubricating property and good sealing effect.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below, but the following embodiments are only preferred embodiments of the present invention, not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Example 1:
the embodiment is a preparation method of a clean type mud-shaped filler, which comprises the following steps:
A. taking a proper amount of artificial fiber for chopping;
B. mixing the rayon fiber subjected to the step A with the concentrated solution; the concentrated solution is polytetrafluoroethylene emulsion; the mixing mode is as follows: according to the weight portion, the artificial fiber accounts for 10% -15%, the rest is concentrated solution, the fiber is placed into an impregnation barrel, and the fiber and the concentrated solution are mixed and stirred uniformly;
C. b, drying the artificial fiber treated in the step B;
D. mixing and stirring the dried fiber, lubricating grease and inorganic filler;
E. d, putting the material processed in the step D into a high-speed rotating stirrer, and stirring into fluffy and dispersed fiber strips;
F. and (7) packaging and warehousing.
In this example, the selected rayon is a polytetrafluoroethylene long fiber, cut to 6mm with a cutter, premixed with a polytetrafluoroethylene emulsion of 50% concentration, the rayon accounts for 10% by weight of the polytetrafluoroethylene emulsion in the premixing, and the fiber is put into an impregnation tank and mixed with the polytetrafluoroethylene emulsion to be uniformly stirred. And then sending the stirred fiber into an oven for drying treatment. During drying, white paper is evenly spread in an oven, fibers are evenly spread on the white paper, and a proper amount of fibers are laid on each layer, so that uneven drying caused by too thick fibers is avoided; enough gaps are reserved between the layers for air to flow; when baking, the oven door should be opened for air exchange. The baking temperature was controlled at 70 ℃ for 12 hours. The dried fiber was about 60% of the original weight. The moisture content of the dried fiber is tested according to a GB/T6678-2003 chemical product sampling JC 331-82 packing physical and chemical property test method, and the moisture content is less than 0.6 percent. At this time, 45% rayon, 35% grease, 12% tetrafluoro ground material and 8% inorganic filler were mixed in parts by weight. The grease here was white grease and the inorganic filler was barium sulfate powder. The 100% of the materials are stirred in a low-speed stirrer for 20 minutes, and in order to avoid the obvious temperature rise of the materials and the yellowing of inorganic filler during stirring, the cover of the stirrer needs to be opened during stirring, and the materials are naturally cooled through air flow. After the low-speed stirrer finishes stirring, the materials are changed into the high-speed stirrer for stirring and molding to prepare fluffy and dispersed fiber strips, and the diameter of the wire is about 0.2 mm. At this time, a small amount of the filler is filled into a filling gun, the filler can be pressed out under the pressure of 5Mpa, and the filler is regarded as qualified and can be packaged and warehoused.
Example 2
The embodiment is a preparation method of a clean type mud-shaped filler, which comprises the following steps:
A. taking a proper amount of artificial fiber for chopping;
B. mixing the rayon fiber subjected to the step A with the concentrated solution; the concentrated solution is polytetrafluoroethylene emulsion; the mixing mode is as follows: according to the weight portion, the artificial fiber accounts for 10% -15%, the rest is concentrated solution, the fiber is placed into an impregnation barrel, and the fiber and the concentrated solution are mixed and stirred uniformly;
C. b, drying the artificial fiber treated in the step B;
D. mixing and stirring the dried fiber, lubricating grease and inorganic filler;
E. d, putting the material processed in the step D into a high-speed rotating stirrer, and stirring into fluffy and dispersed fiber strips;
F. and (7) packaging and warehousing.
In this example, the selected artificial fiber is a polytetrafluoroethylene long fiber, cut to 10mm with a cutting machine, and premixed with a polytetrafluoroethylene emulsion of 50% concentration, wherein the artificial fiber accounts for 15% by weight of the polytetrafluoroethylene emulsion in the premixing, and the rest is the polytetrafluoroethylene emulsion, and the fiber is put into an impregnation barrel and mixed with the polytetrafluoroethylene emulsion uniformly. And then sending the stirred fiber into an oven for drying treatment. During drying, white paper is evenly spread in an oven, fibers are evenly spread on the white paper, and a proper amount of fibers are laid on each layer, so that uneven drying caused by too thick fibers is avoided; enough gaps are reserved between the layers for air to flow; when baking, the oven door should be opened for air exchange. The baking temperature is controlled at 80 ℃ and the baking time is 8 hours. The dried fiber was about 60% of the original weight. The moisture content of the dried fiber is tested according to a GB/T6678-2003 chemical product sampling JC 331-82 packing physical and chemical property test method, and the moisture content is less than 0.6 percent. At this time, 50% rayon, 30% grease, 15% tetrafluoro ground material and 5% inorganic filler were mixed in parts by weight. The grease here was a translucent grease, and the inorganic filler was barium carbonate powder. The 100% of the materials are stirred in a low-speed stirrer for 25 minutes, and in order to avoid the obvious temperature rise of the materials and the yellowing of inorganic filler during stirring, the cover of the stirrer needs to be opened during stirring, and the materials are naturally cooled through air flow. After the low-speed stirrer finishes stirring, the materials are changed into the high-speed stirrer for stirring and molding to prepare fluffy and dispersed fiber strips, and the diameter of the wire is about 0.2 mm. At this time, a small amount of the filler is filled into a filler gun, the filler can be extruded out under the pressure of 3Mpa, and the filler is qualified and can be packaged and warehoused.
Example 3
The embodiment is a preparation method of a clean type mud-shaped filler, which comprises the following steps:
A. taking a proper amount of artificial fiber for chopping;
B. mixing the rayon fiber subjected to the step A with the concentrated solution; the concentrated solution is polytetrafluoroethylene emulsion; the mixing mode is as follows: according to the weight portion, the artificial fiber accounts for 10% -15%, the rest is concentrated solution, the fiber is placed into an impregnation barrel, and the fiber and the concentrated solution are mixed and stirred uniformly;
C. b, drying the artificial fiber treated in the step B;
D. mixing and stirring the dried fiber, lubricating grease and inorganic filler;
E. d, putting the material processed in the step D into a high-speed rotating stirrer, and stirring into fluffy and dispersed fiber strips;
F. and (7) packaging and warehousing.
In this example, the selected rayon is polyacrylonitrile long fiber, cut to 8mm with a cutter, premixed with polytetrafluoroethylene emulsion of 50% concentration, 12% rayon by weight and the balance polytetrafluoroethylene emulsion, and the fibers are put into an impregnation tank and mixed with the polytetrafluoroethylene emulsion uniformly. And then sending the stirred fiber into an oven for drying treatment. During drying, white paper is evenly spread in an oven, fibers are evenly spread on the white paper, and a proper amount of fibers are laid on each layer, so that uneven drying caused by too thick fibers is avoided; enough gaps are reserved between the layers for air to flow; when baking, the oven door should be opened for air exchange. The baking temperature is controlled at 75 ℃ and the baking time is 10 hours. The dried fiber was about 60% of the original weight. The moisture content of the dried fiber is tested according to a GB/T6678-2003 chemical product sampling JC 331-82 packing physical and chemical property test method, and the moisture content is less than 0.6 percent. At this time, 50% rayon, 40% grease, 5% tetrafluoro ground material and 5% inorganic filler were mixed in parts by weight. The grease here was a translucent grease, and the inorganic filler was barium carbonate powder. The 100% of the materials are stirred in a low-speed stirrer for 30 minutes, and in order to avoid the obvious temperature rise of the materials and the yellowing of inorganic filler during stirring, the cover of the stirrer needs to be opened during stirring, and the materials are naturally cooled through air flow. After the low-speed stirrer finishes stirring, the materials are changed into the high-speed stirrer for stirring and molding to prepare fluffy and dispersed fiber strips, and the diameter of the wire is about 0.2 mm. At this time, a small amount of the filler is filled into a filling gun, the filler can be pressed out under the pressure of 4Mpa, and the filler is regarded as qualified and can be packaged and put in storage.
Claims (10)
1. A preparation method of clean type mud-shaped filler is characterized by comprising the following steps:
A. taking a proper amount of artificial fiber for chopping;
B. mixing the rayon fiber subjected to the step A with the concentrated solution; the concentrated solution is polytetrafluoroethylene emulsion; the mixing mode is as follows: according to the weight portion, the artificial fiber accounts for 10% -15%, the rest is concentrated solution, the fiber is placed into an impregnation barrel, and the fiber and the concentrated solution are mixed and stirred uniformly;
C. b, drying the artificial fiber treated in the step B;
D. mixing and stirring the dried fiber, lubricating grease and inorganic filler;
F. and (7) packaging and warehousing.
2. The method for preparing a clean type mud-like filler according to claim 1, wherein in the step A, the artificial fiber comprises polytetrafluoroethylene or polyacrylonitrile long fiber.
3. The method for preparing the clean type mud-like filler according to the claim 1 or 2, wherein in the step A, the length of the chopped artificial fiber is 6-10 mm.
4. The method for preparing clean type mud-like filler according to claim 1 or 2, wherein in the step A, the chopped artificial fiber is subjected to opening treatment.
5. The method for preparing clean type mud-like packing according to claim 1 or 2, wherein in the step B, the concentration of the polytetrafluoroethylene emulsion is 50%.
6. The method for preparing the clean-type mud-like filler according to the claim 1 or 2, characterized in that in the step C, the fiber uniformly mixed and stirred with the concentrated solution is uniformly spread in an oven to be baked, wherein the baking temperature is 70-80 ℃, and the baking time is 8-12 hours.
7. The method for preparing clean type mud-like filler according to claim 6, wherein in the step C, the oven door is opened during baking.
8. The method for preparing a clean type mud-like filler according to claim 1 or 2, wherein in the step D, the synthetic fiber accounts for 50 plus or minus 5 percent, the lubricating grease accounts for 35 plus or minus 5 percent, the tetrafluoro crushed material accounts for 10 plus or minus 5 percent, and the rest is inorganic filler, which accounts for 100 percent in total; and (3) putting various materials into a stirrer to be stirred for 20-30 minutes.
9. The method for preparing the clean mud-like filler according to claim 8, wherein the material is cooled during the stirring process of the stirrer.
10. The method for preparing a clean type mud-like filler according to claim 1 or 2, wherein, between the step D and the step F, the method further comprises the step E: and D, putting the material processed in the step D into a high-speed rotating stirrer to be stirred into fluffy and dispersed fiber strips.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011553729.3A CN112625385A (en) | 2020-12-24 | 2020-12-24 | Preparation method of clean type mud-shaped filler |
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| CN202011553729.3A CN112625385A (en) | 2020-12-24 | 2020-12-24 | Preparation method of clean type mud-shaped filler |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4157328A (en) * | 1976-09-18 | 1979-06-05 | Hoechst Aktiengesellschaft | Sealing material on the basis of polytetrafluoroethylene fibers |
| CN85100880A (en) * | 1985-04-01 | 1986-07-23 | 中国科学院化学研究所 | Carbon fibre reinforced ptfe stuffing materials |
| CN103342984A (en) * | 2013-07-24 | 2013-10-09 | 慈溪卡希尔密封材料有限公司 | Yellow flexible sealing filler and preparation method thereof |
| CN103342983A (en) * | 2013-07-24 | 2013-10-09 | 慈溪卡希尔密封材料有限公司 | White flexible sealing filler and preparation method thereof |
-
2020
- 2020-12-24 CN CN202011553729.3A patent/CN112625385A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4157328A (en) * | 1976-09-18 | 1979-06-05 | Hoechst Aktiengesellschaft | Sealing material on the basis of polytetrafluoroethylene fibers |
| CN85100880A (en) * | 1985-04-01 | 1986-07-23 | 中国科学院化学研究所 | Carbon fibre reinforced ptfe stuffing materials |
| CN103342984A (en) * | 2013-07-24 | 2013-10-09 | 慈溪卡希尔密封材料有限公司 | Yellow flexible sealing filler and preparation method thereof |
| CN103342983A (en) * | 2013-07-24 | 2013-10-09 | 慈溪卡希尔密封材料有限公司 | White flexible sealing filler and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王承鹤: "《塑料摩擦学 塑料的摩擦、磨损、润滑理论与实践》", 31 October 1994 * |
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