CN102517953A - Abrasive disc for papermaking - Google Patents
Abrasive disc for papermaking Download PDFInfo
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- CN102517953A CN102517953A CN2011103655590A CN201110365559A CN102517953A CN 102517953 A CN102517953 A CN 102517953A CN 2011103655590 A CN2011103655590 A CN 2011103655590A CN 201110365559 A CN201110365559 A CN 201110365559A CN 102517953 A CN102517953 A CN 102517953A
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Abstract
The invention relates to an abrasive disc for papermaking, which is applied to the beating technology in the paper production process. The abrasive disc for papermaking consists of the following raw materials in parts by weight: 15-50 parts of base material, 15-65 parts of fiber material and 16-65 parts of abrasion-proof material, wherein the particle size of the abrasion-proof material is 50-500 meshes; the base material, the fiber material and the abrasion-proof material have a wetting and splicing effect; and the base material has abrasion resistance and toughness. The abrasive disc provided by the invention has the advantages of reasonable formula design, light weight, low energy consumption, low manufacturing cost, controllable beating quality and stable quality.
Description
Technical field
The present invention relates to a kind of paper grade (stock) abrasive disc, be used for the beating process of paper production engineering.
Background technology
The effect of making beating in paper-making process is very important.With a kind of fibrous raw material, adopt different making beating modes, the paper performance of production can differ widely.Making beating is again the high energy consumption process, and to several thousand degree, making beating has accounted for greatly about half at paper hundreds of per ton in whole paper-making process power consumption, wherein 70 ~ 80%, and the mill power consumption.
Beating equipment except only a few factory because of special requirement also using trough-style pulp beater, mill (single disc refiner, two (three) mill) making beating has all been adopted in most paper mills.No matter be trough-style pulp beater or single, double mill, all adopted the steel knife making beating basically, have only only a few factory to use other material, like the stone cutter etc.
From mechanical principle analysis pulping process, mill is that the friction between { abrasive disc/fibre/fibre/abrasive disc } is done work to fiber.Frictional force equals normal pressure and multiply by coefficient of friction.Normal pressure is through mechanically actuated, regulates cutter apart from what control, and paper technology is called specific pressure.Coefficient of friction is determined by the abrasive disc material.In the above friction system, the coefficient of friction between { fibre/fibre } is relatively-stationary, and what need research mainly is the coefficient of friction between { abrasive disc/abrasive disc }.And { steel/steel } friction system is under the lubricating condition of water and fiber, and its coefficient of friction is less than 0.1.If abrasive disc has high friction coefficient, just can more effectively fiber be done work with less specific pressure.
The making beating effect that fiber in mill steel abrasive disc and trough-style pulp beater is accepted can be divided into two parts: in roll flute (cutter) mouthful contact position, mainly with the extruding of fiber, be cut into the master; On mill (cutter) face, what fiber mainly received is extruding, rubbing effect.The roll flute of steel abrasive disc has a variety of shapes to supply the user to select; These shapes are all come out according to practice and summary of experience; The profile of tooth that has is strong to the shear ability of fiber; The profile of tooth that has is strong to branch silk, the brooming ability of fiber, and the profile of tooth that has is big to the handling capacity of fiber, and the profile of tooth that has combines various abilities or the like.The profile of tooth of various steel abrasive discs, its facewidth are generally all about 4 ~ 10mm.Though zigzag abrasive disc is also arranged in theory, owing to worn into the plane to serrated face soon, so few people use this zigzag abrasive disc.
Above roll flute (blade) has a common characteristic: tooth (cutter) face all is that smoother is smooth, and mill (cutter) sheet can only utilize the mechanism of extruding, rubbing that fiber is done work, to structure comparatively firm fiber P layer and S
1Layer difficulty is abolished, the initial beating-up period, it is very slow that beating degree rises.
In sum, there is the problem that power consumption is big, cost is high, beating results is bad in existing making beating with mill.
Summary of the invention
It is reasonable in design that technical problem to be solved by this invention provides a kind of prescription, light weight, and less energy consumption, cost is low, making beating quality controllable, stay-in-grade paper grade (stock) abrasive disc.
It is this paper grade (stock) abrasive disc that the present invention solves the problems of the technologies described above the technical scheme that is adopted, and its raw material consists of:
Matrix material 15-50 weight portion; Fibrous material 15-65 weight portion, high-abrasive material 15-65 weight portion, the granularity of said high-abrasive material is between 50 ~ 500 orders; Said matrix material and fibrous material, high-abrasive material have infiltration, adhesive effect, and said matrix material has ABRASION RESISTANCE and toughness.Have a kind of engineering material to obtain development at full speed recent decades, also is one of the field of giving priority to of 21 century, and Here it is polymer matrix composite is called for short PMC, composite, also claims plastic alloy etc.So-called composite, exactly with multiplely can soak into matrix, bonding functional material and matrix bond together, and with multiple function collection and one, reached the insoluble good mechanical performance of homogenous material.This abrasive disc has adopted composite exactly.Because the density of composite is significantly less than steel, and the rotary inertia of mill rotating disk is reduced greatly, this also is one of reason of composite abrasive disc economize on electricity.
As preferably, matrix material of the present invention is thermosetting resin or thermoplastic resin.Matrix is also claimed bonding agent, adhesive.Matrix is combined into the integral body with definite shape with physics, the chemical change of complicacy with enhancing, functional material, forms practical composite.Material as the abrasive disc matrix also has special requirement, i.e. an ABRASION RESISTANCE.Because fiber and water are all-pervasive, not only the high-abrasive material of protuberate and fortifying fibre will be worn, and recessed matrix below will be worn equally.If matrix is worn, then high-abrasive material and fortifying fibre will come off, and the overall wear resistance of abrasive disc will be affected.
Because abrasive disc is worked in water, temperature is not high, and (technological requirement making beating temperature is lower than 60
0C), so the matrix that is suitable for is a lot.But the matrix that ABRASION RESISTANCE is good is a various types of resins.Thermosetting resin wherein commonly used has: unsaturated polyester resin (UP), epoxy resin (EP), phenolic resins, silicone resin, Lauxite, melmac, organic siliconresin etc.; Thermoplastic resin has: ultra-high molecular weight polyethylene (UHMW-PE), polypropylene (PP), ABS resin, polyformaldehyde (POM), polyamide (nylon) (PA), polyphenylene oxide (PPO), polyester PET, PBT etc., polyether-ether-ketone (PEEK), polyphenylene sulfide (PPS), polyether sulfone (PES), polyimides (PI) (polyetheramides PEI), liquid crystal polyester (LCP), polycarbonate (PC), polytetrafluoroethylene (PTFE), polysulfones (PSF), polyether-ketone etc.Owing under casual condition, also possibly produce high temperature between abrasive disc, so when material is selected, select resistant to elevated temperatures material as far as possible for use.Particularly vitrification point is lower than the thermoplastic resin of surface temperature of drier, and the resin of wearing and tearing possibly have a negative impact at dryer surface, can not adopt.
In order to improve the fragility of resin, and improve the ABRASION RESISTANCE and the toughness of resin, generally all need resin is carried out could being used as after the modification matrix of abrasive disc.More have and adopt various kinds of resin to carry out blend (physical blending, chemical blend), reach learn from other's strong points to offset one's weaknesses, performance complement, obtain more superior polymeric matrix material, also claim plastic alloy.
As preferably, fibrous material of the present invention is at least a or multiple fiber combinations in metal fibre, glass fibre, aramid fiber, the carbon fiber.
As preferably, fibrous material of the present invention is one or more fiber combinations in wood pulp fibre, flax fibre, the cotton fiber.
As preferably, fibrous material of the present invention is one or more fiber combinations in boron fibre, silicon carbide fibre, alumina fibre, alumina silicate fibre, the boron nitride fiber.
As preferably, fibrous material of the present invention is a whisker, and said whisker is the tiny monocrystalline of growth under the manual control condition, and diameter is at 0.2 ~ 1 micron, and length is 1 ~ 100 micron, and said whisker is selected from Al
2O
3, AlN, BeO, B
4C, graphite, a-SiC, b-SiC, Si
3N
4In one or more combinations.
The fibrous material major function is the mechanical strength that guarantees abrasive disc, will take into account the anti-wear performance of material simultaneously.Satisfactory reinforcing material is a lot, and metal material is arranged, and nonmetallic materials are also arranged.Steel fibre is exactly good metal material, and not only intensity is high, and ABRASION RESISTANCE, and price is also cheap.But steel fibre is easy to get rusty in water, must carry out special treatment.The stainless steel fibre problem that fine solution is got rusty with regard to ability.Other also has a lot of wires, like copper wire, beryllium silk, molybdenum filament, titanium silk, tungsten filament etc., all is good fortifying fibre.Nonmetallic materials are more, are to use the earliest like asbestos fibre, the fortifying fibre that consumption is maximum.But asbestos are strong carcinogens, limited by environmental protection, in recent years progressively by other material substitution.What alternative asbestos were the most frequently used is glass fibre.But the glass fibre frangible adds and wants the control operation condition man-hour.String such as cotton fiber, wood pulp fibre also is the fiber of using always.Carbon fiber and aramid fiber are very good nonmetal fortifying fibres, and the purposes in composite is more and more wider.But this fibrid costs an arm and a leg, and only under specific (special) requirements, just uses.In order to strengthen the adhesive strength of carbon fiber and aramid fiber and matrix, also need this fibrid is carried out special treatment.The novel enhanced fiber also has: boron fibre, silicon carbide fibre, alumina fibre, alumina silicate fibre, boron nitride fiber or the like.In addition, whisker is the tiny monocrystalline of growth under the manual control condition, and diameter is at 0.2 ~ 1 micron; Tens microns of length, tiny like this single-crystal fault is few, thereby whisker intensity is high; Theoretical value near crystal; Use metal whisker reinforced composite, can obviously improve intensity, rigidity and the high-temperature behavior etc. of material, suitable whisker has: Al
2O
3, AlN, BeO, B
4C, C (graphite), a-SiC, b-SiC, Si
3N
4Deng.The single variety fiber can not satisfy instructions for use sometimes, can select two kinds or above fiber cooperation for use, learns from other's strong points to offset one's weaknesses, and has complementary advantages.
Basic demand first to fortifying fibre is the intensity of fiber self, the secondth, and with infiltration, the adhesive strength of matrix.The 3rd will consider the price factor of material.The content of fiber changes with the different of friction and wear behavior parameter request with intensity in the composite
As preferably, high-abrasive material of the present invention is ceramic particle, barium sulfate particle, diatomite, feldspar powder, brown iron oxide, alundum (Al, silica, cashew nut shell powder, resin particle, rubber grain, kaolin, mica, graphite, wollastonite in powder, blanc fixe, potter's clay powder, aluminum sulfate, SiC, B
4C, TiC, Si
3N
4, TiB
2, mullite, iron and oxide particle, copper and oxide particle thereof, aluminium, titanium, magnesium, nickel, at least a or multiple combination of materials.Wear resistant filler is the important materials that guarantees abrasive disc anti-wear performance and generation " little shape sharps teeth ".Suitable high-abrasive material is a lot, and metal, metal oxide and nonmetallic are arranged.Metallic packing has iron powder, iron filings, copper powder, copper scale etc., and except iron and copper, metallic particles such as aluminium, titanium, magnesium, nickel can both be used as wear resistant filler.Nonmetal more with metal oxide filler, like multiple ceramic particle, barium sulfate particle, diatomite, feldspar powder, brown iron oxide, alundum (Al, silica, cashew nut shell powder, resin particle, rubber grain, kaolin, mica, graphite, wollastonite in powder, blanc fixe, potter's clay powder, aluminum sulfate, SiC, B
4C, TiC, Si
3N
4, TiB
2, mullite Al
2O
32SiO
2Or the like can both be used as wear resistant filler.Basic demand first to filler is an ABRASION RESISTANCE; The secondth, with infiltration, the adhesive strength of matrix; The 3rd will consider the price factor of material.The shape of filler is the specific (special) requirements of abrasive disc materials.Require filler to have corner angle suitable quantity and size, wear-resisting, in order to P layer and S to fiber
1The layer abolish and to S
2The combing of layer, branch silk, brooming reach the cut-out to fiber.The variety matching of filler, consumption and granular size are to produce the miniature principal element that sharps teeth in blade surface.So its kind, consumption and granule size must be formulated different proportionings according to demands of different.The granularity of these mills (filling out) material is between 50 ~ 500 orders.
As preferably, thermosetting resin of the present invention is one or more the combination in unsaturated polyester resin, epoxy resin, phenolic resins, silicone resin, Lauxite, melmac, the organic siliconresin, and above resin contains modified resin.
As preferably; Thermoplastic resin of the present invention is one or more the combination in ultra-high molecular weight polyethylene, polypropylene, ABS resin, polyformaldehyde, polyamide, polyphenylene oxide, PET, polybutylene terephthalate (PBT), polyether-ether-ketone, polyphenylene sulfide, polyether sulfone, polyimides, polyetheramides, liquid crystal polyester, polycarbonate, polytetrafluoroethylene (PTFE), polysulfones, the polyether-ketone, and above resin contains modified resin.
The present invention is with existing compared with techniques; Have the following advantages and characteristics: characteristics of the present invention are " composites " possessed abrasive disc necessary strength, anti-wear performance and coefficient of friction than steel higher outside, main feature is to have assembled a large amount of little shapes in blade surface to sharp teeth.Even sharping teeth of surface worn and torn, there be new sharping teeth to replenish again.These sizes that " sharp teeth " can require to adjust with quantity according to different making beating.The quantity that sharps teeth is many, and particle is big, and abrasive disc is strong to the cut-out ability of fiber, is fit to the high disconnect request to fiber crops, cotton fiber; The quantity that sharps teeth is few, and particle is little, a little less than the cut-out ability of abrasive disc to fiber, but divides silk, brooming ability strong, is fit to the high degree of beating making beating of straw pulp making beating, wood pulp and discongesting of useless, waste stuff; The quantity that sharps teeth is when being of moderate size, and existing certain fibre cutting ability has stronger fiber to divide silk, brooming ability again, and is optimum to the medium beating degree of wood pulp commonly used.
Abrasive disc with composite of the present invention is made because beating degree rises soon, has played tangible power savings.Papermaking is the energy consumption rich and influential family, and the power consumption of pulping process has accounted for greatly about half of whole paper-making process, wherein 70 ~ 80%, and the mill electricity consumption, all the other are pulping, pumping and stirring electricity consumption.And the power consumption of whole paper-making process is up to paper hundreds of per ton to several thousand degree, so the power savings of this thin abrasive disc is very tangible.Utilize the abrasive disc making beating of made of the present invention, mill 40 ~ 50% (power savings of different product and technology is different) of can economizing on electricity.
The specific embodiment
Below in conjunction with embodiment the present invention is done further detailed description, following examples are to explanation of the present invention and the present invention is not limited to following examples.
Embodiment 1: the present invention is a kind of paper grade (stock) (list) double plate mill abrasive disc, has overcome the shortcoming of steel abrasive disc in the defibrination process.
Characteristics of the present invention are " composites " possessed abrasive disc necessary strength, anti-wear performance and coefficient of friction than steel higher outside, main feature is to have assembled a large amount of little shapes in blade surface to sharp teeth.Even sharping teeth of surface worn and torn, there be new sharping teeth to replenish again.These sizes that " sharp teeth " can require to adjust with quantity according to different making beating.The quantity that sharps teeth is many, and particle is big, and abrasive disc is strong to the cut-out ability of fiber, is fit to the high disconnect request to fiber crops, cotton fiber; The quantity that sharps teeth is few, and particle is little, a little less than the cut-out ability of abrasive disc to fiber, but divides silk, brooming ability strong, is fit to the high degree of beating making beating of straw pulp making beating, wood pulp and discongesting of useless, waste stuff; The quantity that sharps teeth is when being of moderate size, and existing certain fibre cutting ability has stronger fiber to divide silk, brooming ability again, and is optimum to the medium beating degree of wood pulp commonly used.
The process more complicated of " making beating ", because the difference of raw material and production product, " making beating " process has very big difference.Original just short like the straw pulp fiber, so will avoid cut-out in the pulping process as far as possible, be main mainly to discongest, to divide silk to fiber; The pulping process of long fibers such as cotton, fiber crops mainly is a cutting-off process, and beating degree rises generally not too large; The pulping process of wood pulp is complicated especially, and the sheet paper products that has requires to keep the length of fiber as far as possible, reaches certain beating degree again; The sheet paper products that has requires fiber is produced certain cut-out, divides silk, brooming, produces certain beating degree simultaneously; Exigent beating degree of the sheet paper products that also has and brooming rate, but still to keep certain fibre length.Under identical beating degree, producing better fiber, to divide silk, brooming phenomenon be the common requirement of making beating.Have only the product of only a few not require fiber brooming.This is just to the material of abrasive disc, and particularly surperficial miniature sharping teeth proposed different requirement.The quantity that sharps teeth is few, and particle is little, must just can reduce the cut-out to fiber, but can produce branch silk, the brooming effect of fiber better; The quantity that sharps teeth is many, and particle is big, just can strengthen the cut-out ability to fiber; But what quantity was too much, particle is excessive sharps teeth, and will produce excessive cut-out, and it is too short to make into pulp fibres, and this is not that papermaking is needed.
Because the effect that sharps teeth of blade surface, from making beating at the very start to the P layer and the S of fiber
1Layer carries out the cutting of operation formula, so beating degree rises comparatively fast.As long as control well,, mainly play cutting fiber P layer and S because flour milling exposes little shape and sharps teeth less than the diameter of fiber to the quantity and the granular size that sharp teeth
1The effect and the combing S of layer
2The effect of layer can be not short with fiber Qie Detai.See that from beating results when reaching same beating degree, not only fiber brooming rate is much higher than the steel abrasive disc, and the also control easily of pulping fibre length.The material different prescription; Or with many mills, different model abrasive disc series connection cooperation; Add different operation method (control specific pressure), under same beating degree, both can reach into the longer effect of pulp fibres, thereby can produce the higher paper of intensity.Also can reach and the same fibre length of steel knife making beating, to guarantee the evenness of paper.
With paper grade (stock) abrasive disc of the present invention,, played tangible power savings because beating degree rises soon.Papermaking is the energy consumption rich and influential family, and the power consumption of pulping process has accounted for greatly about half of whole paper-making process, wherein 70 ~ 80%, and the mill electricity consumption, all the other are pulping, pumping and stirring electricity consumption.And the power consumption of whole paper-making process is up to paper hundreds of per ton to several thousand degree, so the power savings of this thin abrasive disc is very tangible.Utilize the abrasive disc making beating of made of the present invention, mill can economize on electricity 40 ~ 50%.(power savings of different product and technology is different)
Have a kind of engineering material to obtain development at full speed recent decades, also is one of the field of giving priority to of 21 century, and Here it is polymer matrix composite is called for short PMC, composite, also claims plastic alloy etc.So-called composite, exactly with multiplely can soak into matrix, bonding functional material and matrix bond together, and with multiple function collection and one, reached the insoluble good mechanical performance of homogenous material.This abrasive disc has adopted composite exactly.Because the density of composite is significantly less than steel, and the rotary inertia of mill rotating disk is reduced greatly, this also is one of reason of composite abrasive disc economize on electricity.
Paper grade (stock) abrasive disc of the present invention divides three parts to form:
1, matrix material.
2, fibrous material.
3, high-abrasive material.
Be summarized as follows:
1, matrix material is also claimed bonding agent, adhesive.
Matrix material is combined into the integral body with definite shape with physics, the chemical change of complicacy with enhancing, functional material, forms practical composite.Material as the abrasive disc matrix also has special requirement, i.e. an ABRASION RESISTANCE.Because fiber and water are all-pervasive, not only the high-abrasive material of protuberate and fortifying fibre will be worn, and recessed matrix below will be worn equally.If matrix is worn, then high-abrasive material and fortifying fibre will come off, and the overall wear resistance of abrasive disc will be affected.
Because abrasive disc is worked in water, temperature is not high, and (technological requirement making beating temperature is lower than 60
0C), so the matrix that is suitable for is a lot.But the matrix that ABRASION RESISTANCE is good is a various types of resins.Thermosetting resin wherein commonly used has: unsaturated polyester resin (UP), epoxy resin (EP), phenolic resins, silicone resin, Lauxite, melmac, organic siliconresin etc.; Thermoplastic resin has: ultra-high molecular weight polyethylene (UHMW-PE), polypropylene (PP), ABS resin, polyformaldehyde (POM), polyamide (nylon) (PA), polyphenylene oxide (PPO), polyester PET, PBT etc., polyether-ether-ketone (PEEK), polyphenylene sulfide (PPS), polyether sulfone (PES), polyimides (PI) (polyetheramides PEI), liquid crystal polyester (LCP), polycarbonate (PC), polytetrafluoroethylene (PTFE), polysulfones (PSF), polyether-ketone etc.Owing under casual condition, also possibly produce high temperature between abrasive disc, so when material is selected, select resistant to elevated temperatures material as far as possible for use.Particularly vitrification point is lower than the thermoplastic resin of surface temperature of drier, and the resin of wearing and tearing possibly have a negative impact at dryer surface, can not adopt.
In order to improve the fragility of resin, and improve the ABRASION RESISTANCE and the toughness of resin, generally all need resin is carried out could being used as after the modification matrix of abrasive disc.More have and adopt various kinds of resin to carry out blend (physical blending, chemical blend), reach learn from other's strong points to offset one's weaknesses, performance complement, obtain more superior polymeric matrix material, also claim plastic alloy.
The high-abrasive material consumption is generally the 15-50 weight portion.
2, fibrous material: its major function is the mechanical strength that guarantees abrasive disc, will take into account the anti-wear performance of material simultaneously.Satisfactory reinforcing material is a lot, and metal material is arranged, and nonmetallic materials are also arranged.Steel fibre is exactly good metal material, and not only intensity is high, and ABRASION RESISTANCE, and price is also cheap.But steel fibre is easy to get rusty in water, must carry out special treatment.The stainless steel fibre problem that fine solution is got rusty with regard to ability.Other also has a lot of wires, like copper wire, beryllium silk, molybdenum filament, titanium silk, tungsten filament etc., all is good fortifying fibre.Nonmetallic materials are more, are to use the earliest like asbestos fibre, the fortifying fibre that consumption is maximum.But asbestos are strong carcinogens, limited by environmental protection, in recent years progressively by other material substitution.What alternative asbestos were the most frequently used is glass fibre.But the glass fibre frangible adds and wants the control operation condition man-hour.String such as cotton fiber, wood pulp fibre also is the fiber of using always.Carbon fiber and aramid fiber are very good nonmetal fortifying fibres, and the purposes in composite is more and more wider.But this fibrid costs an arm and a leg, and only under specific (special) requirements, just uses.In order to strengthen the adhesive strength of carbon fiber and aramid fiber and matrix, also need this fibrid is carried out special treatment.The novel enhanced fiber also has: boron fibre, silicon carbide fibre, alumina fibre, alumina silicate fibre, boron nitride fiber or the like.In addition, whisker is the tiny monocrystalline of growth under the manual control condition, and diameter is at 0.2 ~ 1 micron; Tens microns of length, tiny like this single-crystal fault is few, thereby whisker intensity is high; Theoretical value near crystal; Use metal whisker reinforced composite, can obviously improve intensity, rigidity and the high-temperature behavior etc. of material, suitable whisker has: Al
2O
3, AlN, BeO, B
4C, C (graphite), a-SiC, b-SiC, Si
3N
4Deng.The single variety fiber can not satisfy instructions for use sometimes, can select two kinds or above fiber cooperation for use, learns from other's strong points to offset one's weaknesses, and has complementary advantages.
Basic demand first to fortifying fibre is the intensity of fiber self, the secondth, and with infiltration, the adhesive strength of matrix.The 3rd will consider the price factor of material.The content of fiber changes with the different of friction and wear behavior parameter request with intensity in the composite, and its content is generally the 15-65 weight portion.
3, wear resistant filler: wear resistant filler is the important materials that guarantees abrasive disc anti-wear performance and generation " little shape sharps teeth ".Suitable high-abrasive material is a lot, and metal, metal oxide and nonmetallic are arranged.Metallic packing has iron powder, iron filings, copper powder, copper scale etc., and except iron and copper, metallic particles such as aluminium, titanium, magnesium, nickel can both be used as wear resistant filler.Nonmetal more with metal oxide filler, like multiple ceramic particle, barium sulfate particle, diatomite, feldspar powder, brown iron oxide, alundum (Al, silica, cashew nut shell powder, resin particle, rubber grain, kaolin, mica, graphite, wollastonite in powder, blanc fixe, potter's clay powder, aluminum sulfate, SiC, B
4C, TiC, Si
3N
4, TiB
2, mullite Al
2O
32SiO
2Or the like can both be used as wear resistant filler.Basic demand first to filler is an ABRASION RESISTANCE; The secondth, with infiltration, the adhesive strength of matrix; The 3rd will consider the price factor of material.The shape of filler is the specific (special) requirements of abrasive disc materials.Require filler to have corner angle suitable quantity and size, wear-resisting, in order to P layer and S to fiber
1The layer abolish and to S
2The combing of layer, branch silk, brooming reach the cut-out to fiber.The variety matching of filler, consumption and granular size are to produce the miniature principal element that sharps teeth in blade surface.So its kind, consumption and granule size must be formulated different proportionings according to demands of different.The granularity of these mills (filling out) material is between 50 ~ 500 orders.Its content is generally at the 15-65 weight portion.
The manufacturing approach of composite abrasive disc has following several kinds:
1, the wet method manufacturing.According to different resin forms, can be divided into two kinds of modes:
A) liquid resin: earlier fibrous material and wear resistant filler are evenly mixed (making beating) form slurry by proportion of raw materials and concentration in water; Method with papermaking is operated on former; Add certain slurry in the barrel on forming net; Stir, then after wire side dewaters naturally again lower pumping, on pressurizing and dehydrating, to be formed with the l Water Paper base of certain intensity.Open barrel, the l Water Paper base is moved into press, further press dewatering moves into drying and dewatering in the drying plant then.Ground paper after the oven dry just can absorb liquid resin.Blank behind the absorption capacity resin with hot press pressurization, heating, makes the preliminary slaking of resin once more, and then moves into baking oven for heating, at a certain temperature, makes the abundant slaking of resin.The profile of tooth of abrasive disc and fixing hole can be shaped adding on the pressing mold, also can be pressed into tabular, process profile, profile of tooth and fixing hole with machine-tooled method.On grinding machine, abrasive disc is worn into standard thickness and flatness at last, with installation, the instructions for use that meets mill.Because the thickness of abrasive disc is greater than 15mm, the difficulty of wet moulding is bigger.If the abrasive disc with the method for MULTILAYER COMPOSITE is made because interlayer lacks the fiber bonding strength, only has the abrasive disc intensity of resin bonding can not satisfy instructions for use.So must just can meet the requirements by once-forming.
B) solid resin: when being batching with liquid resinous main difference, directly solid resin is added direct forming in the slurry, directly pressurize, heat and in baking oven, heat, make the abundant slaking of resin, this method has reduced the process that absorbs resin.Because the thickness of abrasive disc is bigger, the difficulty of this method is equally very big.
2, the dry method manufacturing: reinforced in mould after all solids material follow procedure stirred in special-purpose stirring machine, directly heating, pressurization behind the preliminarily forming, move into further heating in the baking oven, make the abundant slaking of resin.The very big products such as abrasive disc of the most suitable production thickness of this method, the profile of tooth of abrasive disc and fixing hole can directly be processed on mould, also can use mach method processing.
More than two kinds of processing methods that method all is a thermosetting resin.
3, thermoplastic resin and portion of hot thermosetting resin can once moulding on injection machine, and be most effective.
No matter which kind of method to make abrasive disc with, generally in the heating maturing process, the flexural deformation phenomenon is arranged all, need at last on grinding machine, abrasive disc to be worn into standard thickness and flatness, to guarantee installation, the instructions for use on mill.
The prescription of composite abrasive disc is not unalterable, on the contrary, should formulate different prescriptions according to demands of different.As in white cultural paper, should not use dark material, like carbon fiber etc.,, influence the outward appearance of paper in order to avoid wearer produces color dot; Food with wrapping paper in, can not adopt the unsuitable material of packaging for foodstuff, like phenolic resins etc.; In insulating paper, can not adopt conductive material, like all metals, carbon fiber etc.
Ultra-high molecular weight polyethylene of the present invention is claimed the VHD polyethylene again.
In addition, need to prove, the specific embodiment described in this specification, its prescription, title that technology is named etc. can be different.Allly conceive equivalence or the simple change that described structure, characteristic and principle are done, include in the protection domain of patent of the present invention according to patent of the present invention.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment; Only otherwise depart from structure of the present invention or surmount the defined scope of these claims, all should belong to protection scope of the present invention.
Though the present invention with embodiment openly as above; But it is not in order to limit protection scope of the present invention; Any technical staff who is familiar with this technology, change and the retouching in not breaking away from design of the present invention and scope, done all should belong to protection scope of the present invention.
Claims (5)
1. paper grade (stock) abrasive disc, its raw material consists of:
Matrix material 15-50 weight portion; Fibrous material 15-65 weight portion, high-abrasive material 15-65 weight portion, the granularity of said high-abrasive material is between 50 ~ 500 orders; Said matrix material and fibrous material, high-abrasive material have infiltration, adhesive effect, and said matrix material has ABRASION RESISTANCE and toughness.
2. paper grade (stock) abrasive disc according to claim 1 is characterized in that: described matrix material is thermosetting resin or thermoplastic resin.
3. paper grade (stock) abrasive disc according to claim 1; It is characterized in that: described fibrous material is one or more fiber combinations in metal fibre, glass fibre, aramid fiber, carbon fiber, wood pulp fibre, flax fibre, cotton fiber, boron fibre, silicon carbide fibre, alumina fibre, alumina silicate fibre, boron nitride fiber, the whisker; Said whisker is the tiny monocrystalline of growth under the manual control condition; Diameter is at 0.2 ~ 1 micron, and length is 1 ~ 100 micron, and said whisker is selected from Al
2O
3, AlN, BeO, B
4C, graphite, a-SiC, b-SiC, Si
3N
4In one or more combinations.
4. paper grade (stock) abrasive disc according to claim 1 is characterized in that: described high-abrasive material is ceramic particle, barium sulfate particle, diatomite, feldspar powder, brown iron oxide, alundum (Al, silica, cashew nut shell powder, resin particle, rubber grain, kaolin, mica, graphite, wollastonite in powder, blanc fixe, potter's clay powder, aluminum sulfate, SiC, B
4C, TiC, Si
3N
4, TiB
2, mullite, iron and oxide particle, copper and oxide particle thereof, aluminium, titanium, magnesium, nickel, at least a or multiple combination of materials.
5. paper grade (stock) abrasive disc according to claim 2; It is characterized in that: described thermosetting resin is one or more the combination in unsaturated polyester resin, epoxy resin, phenolic resins, silicone resin, Lauxite, melmac, organic siliconresin, ultra-high molecular weight polyethylene, polypropylene, ABS resin, polyformaldehyde, polyamide, polyphenylene oxide, PET, polybutylene terephthalate (PBT), polyether-ether-ketone, polyphenylene sulfide, polyether sulfone, polyimides, polyetheramides, liquid crystal polyester, polycarbonate, polytetrafluoroethylene (PTFE), polysulfones, the polyether-ketone, and above resin contains modified resin.
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| CN2011103655590A CN102517953A (en) | 2011-11-17 | 2011-11-17 | Abrasive disc for papermaking |
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| CN2011103655590A CN102517953A (en) | 2011-11-17 | 2011-11-17 | Abrasive disc for papermaking |
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| CN102517953A true CN102517953A (en) | 2012-06-27 |
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| CN2011103655590A Pending CN102517953A (en) | 2011-11-17 | 2011-11-17 | Abrasive disc for papermaking |
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| CN (1) | CN102517953A (en) |
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| CN103305002A (en) * | 2013-05-31 | 2013-09-18 | 四川华通特种工程塑料研究中心有限公司 | Polyphenylene sulfide millstone for papermaking pulping |
| CN103804846A (en) * | 2014-03-03 | 2014-05-21 | 上海瀚氏模具成型有限公司 | High temperature-resistant fiber-reinforced acrylonitrile butadiene styrene (ABS) plastic for automotive upholsteries, and preparation method of plastic |
| CN104592733A (en) * | 2015-02-06 | 2015-05-06 | 苏州欢颜电气有限公司 | Insulation material for electrical engineering |
| CN105401040A (en) * | 2015-11-10 | 2016-03-16 | 太仓捷公精密金属材料有限公司 | Heat-resistant abrasion-resistant composite metal material |
| CN105774180A (en) * | 2016-03-01 | 2016-07-20 | 苏州莱特复合材料有限公司 | Carbon fiber composite for golf clubs and preparation method of carbon fiber composition |
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| CN103305002B (en) * | 2013-05-31 | 2015-09-23 | 四川华通特种工程塑料研究中心有限公司 | A kind of papermaking making beating Polyphenylene sulfide millstone |
| CN103305002A (en) * | 2013-05-31 | 2013-09-18 | 四川华通特种工程塑料研究中心有限公司 | Polyphenylene sulfide millstone for papermaking pulping |
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| CN104592733A (en) * | 2015-02-06 | 2015-05-06 | 苏州欢颜电气有限公司 | Insulation material for electrical engineering |
| CN105401040A (en) * | 2015-11-10 | 2016-03-16 | 太仓捷公精密金属材料有限公司 | Heat-resistant abrasion-resistant composite metal material |
| CN105774180A (en) * | 2016-03-01 | 2016-07-20 | 苏州莱特复合材料有限公司 | Carbon fiber composite for golf clubs and preparation method of carbon fiber composition |
| CN105948568B (en) * | 2016-05-04 | 2020-01-24 | 山东源根化学技术研发有限公司 | Super-strong wear-resistant artificial quartz stone plate and preparation method thereof |
| CN105948568A (en) * | 2016-05-04 | 2016-09-21 | 山东源根化学技术研发有限公司 | Super-strength and anti-wear artificial quartz stone plate and production method thereof |
| CN106433033A (en) * | 2016-09-09 | 2017-02-22 | 天津工业大学 | Preparation technology for material for promoting frictional wear performance of epoxy resin under synergic effect of inorganic particles and carbon fibers |
| CN106544924A (en) * | 2016-11-23 | 2017-03-29 | 陕西科技大学 | A kind of alumina fibre strengthens the preparation method of paper friction material |
| CN106589527A (en) * | 2016-11-30 | 2017-04-26 | 芜湖立创包装有限公司 | Wearing-resistant plastic material composition and wearing-resistant plastic bottle and preparation method thereof |
| CN106747329A (en) * | 2016-11-30 | 2017-05-31 | 郑州仁宏医药科技有限公司 | A kind of wear-resisting composite cermet material and preparation method thereof |
| CN106750755A (en) * | 2016-11-30 | 2017-05-31 | 芜湖立创包装有限公司 | Wear-resistant plastic material composition and wear-resistant plastic bottle and preparation method thereof |
| CN108530857A (en) * | 2018-04-18 | 2018-09-14 | 广东威立瑞科技有限公司 | A kind of wear-resisting glass-reinforced plastic material |
| CN110358230A (en) * | 2019-08-18 | 2019-10-22 | 赵伟芬 | Anti abrasive PTFE based composites under a kind of dry friction |
| CN111019311A (en) * | 2019-12-05 | 2020-04-17 | 江门市江海区新雄利塑料科技有限公司 | Wear-resistant engineering plastic and preparation method thereof |
| CN113831853A (en) * | 2021-08-27 | 2021-12-24 | 上海自图新材料科技有限公司 | Radome TPU protection film |
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