CN104889896B - A kind of coated abrasive tool and preparation method thereof - Google Patents
A kind of coated abrasive tool and preparation method thereof Download PDFInfo
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- CN104889896B CN104889896B CN201510368812.6A CN201510368812A CN104889896B CN 104889896 B CN104889896 B CN 104889896B CN 201510368812 A CN201510368812 A CN 201510368812A CN 104889896 B CN104889896 B CN 104889896B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/02—Backings, e.g. foils, webs, mesh fabrics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/001—Manufacture of flexible abrasive materials
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- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention provides a kind of coated abrasive tool, including substrate layer, binding agent and abrasive material, it is characterised in that the substrate layer is perforated membrane；The perforated membrane is coated on nylon loop primary surface by the mixed solution including polyurethane resin, wood powder, defoamer, levelling agent and DMF, and then split-phase film forming is obtained in coagulating bath.The coated abrasive tool that the present invention is provided not only is lost slowly in use, and service life is long, and has good resistance to tortuosity, pliability, elasticity and tensile strength, can meet the requirement of accurate production.
Description
Technical field
The present invention relates to milling tool technical field, more particularly to a kind of coated abrasive tool and preparation method thereof.
Background technology
Coated abrasive tool refers to the grinding tool that abrasive material is sticked on flexible substrates with binding agent, is referred to as omnipotent grinder tool.
Coated abrasive tool mainly acts on the processes such as grinding, polishing, the wire drawing of various metals and non-metal workpiece, the table for improving workpiece
Face handles quality.Not only the range of work is wide for coated abrasive tool, and grinding efficiency is high, and can reach high dimensional accuracy and low rough surface
Degree.
Three big key elements of coated abrasive tool are abrasive material, binding agent and matrix.Abrasive material is responsible for being ground workpiece, its soft or hard journey
Degree, granular size can show different surface effects, the thickness of such as lines, the size of finish.Binding agent is responsible for its base
Body and abrasive material are bonded together, and its firmness bonded then determines the durability of this coated abrasive tool, such as water-fast, acidproof, alkaline-resisting
Performance etc..Matrix is the carrier of abrasive material and binding agent, not only soft and high resilience, is the master that coated abrasive tool has flexing
Inducement element.
Conventionally used coated abrasive tool includes paper base material grinding tool, cloth base material grinding tool and film substrate grinding tool.Wherein, cloth base material
Grinding tool is because having the advantages that stretching resistance is good, indeformable, heat-resisting and application is most wide.Cloth base material grinding tool is coated on cloth base material
Various hard materials and be made, its cloth base is knitted by cotton or synthetic fibers are made, and increase intensity is impregnated with cloth base matrix
High polymer.Although cloth base material grinding tool weares and teares quickly, service life is shorter in use with certain advantage.
The content of the invention
It is an object of the invention to provide a kind of coated abrasive tool and preparation method thereof, the coated abrasive tool that the present invention is provided makes
It is lost slowly during, service life is long.
Technical scheme is as follows：
The invention provides a kind of coated abrasive tool, including substrate layer, binding agent and abrasive material, it is characterised in that the base material
Layer is perforated membrane；
The perforated membrane is by mixed including polyurethane resin, wood powder, defoamer, levelling agent and DMF
Close solution and be coated on nylon loop primary surface, then split-phase film forming is obtained in coagulating bath.
It is preferred that, the modulus of elasticity of the polyurethane resin is 30~80.
It is preferred that, the fine hair area coverage of the nylon loop base is the 85%~95% of the cloth base gross area.
It is preferred that, the villus length is 1mm~3mm.
It is preferred that, the mixed solution is 180g/m in the coated weight of nylon loop primary surface2~300g/m2。
The invention provides a kind of preparation method of coated abrasive tool, comprise the following steps：
Polyurethane resin, wood powder, defoamer, levelling agent are mixed with DMF, mixed solution is obtained；
The mixed solution is coated in after nylon loop primary surface, by obtained nylon loop base be placed in coagulating bath split-phase into
Film, obtains perforated membrane；
Binding agent and abrasive material are mixed, mortar is obtained；
Mortar is coated in porous film surface, coated abrasive tool is obtained.
It is preferred that, the mixed solution includes following components：
90 parts~110 parts of polyurethane resin；
80 parts~120 parts of DMF；
20 parts~40 parts of wood powder；
0.1 part~2 parts of defoamer；
0.1 part~2 parts of levelling agent.
It is preferred that, the binding agent includes following components：
90 parts~110 parts of epoxy resin；
5 parts~15 parts of butyl ester；
5 parts~15 parts of DMF；
40 parts~60 parts of modified polyamide.
It is preferred that, the mortar includes following components：
140 parts~200 parts binding agents；
200 parts~300 parts abrasive materials.
It is preferred that, the preparation method of the modified polyamide comprises the following steps：
The butyronitrile of presulfurization and amine value are subjected to graft reaction for 250mg KOH/g~350mg KOH/g polyamide, obtained
To modified polyamide；
The number-average molecular weight of the polyamide is 800~1600.
It is preferred that, the temperature of the graft reaction is 120 DEG C~180 DEG C；
The time of the graft reaction is 1.5 hours~3 hours.
The invention provides a kind of coated abrasive tool, including substrate layer, binding agent and abrasive material, it is characterised in that the base material
Layer is perforated membrane；The perforated membrane is by including polyurethane resin, wood powder, defoamer, levelling agent and DMF
Mixed solution is coated on nylon loop primary surface, and then split-phase film forming is obtained in coagulating bath.In the present invention, the perforated membrane tool
Not only it is lost in use slow, service life is long, and has good resistance to tortuosity, pliability, elasticity and tensile strength,
The requirement of accurate production can be met.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation of coated mould provided in an embodiment of the present invention；
Fig. 2 is the process flow diagram of the coated perforated membrane of mortar in the embodiment of the present invention.
Description of reference numerals：1- abrasive materials；2- binding agents；3- substrate layers；4- scrapers；5- spends roller；6- baking ovens.
Embodiment
The invention provides a kind of coated abrasive tool, including substrate layer, binding agent and abrasive material, the substrate layer is perforated membrane；
The perforated membrane is by mixed including polyurethane resin, wood powder, defoamer, levelling agent and DMF
Close solution and be coated on nylon loop primary surface, then split-phase film forming is obtained in coagulating bath.
The coated mould that the present invention is provided has good elasticity, can meet the requirement of accurate production.
As shown in figure 1, Fig. 1 is the structural representation of coated mould provided in an embodiment of the present invention, coated mould of the invention
Tool includes substrate layer, binding agent and abrasive material.
The coated mould that the present invention is provided includes substrate layer, and the substrate layer is perforated membrane, and the perforated membrane is by including poly-
Urethane resin, wood powder, defoamer, the mixed solution of levelling agent and DMF are coated on nylon loop primary surface,
Then split-phase film forming is obtained in coagulating bath.In the present invention, the cloth base is preferably TC cloth；Volume of the present invention to the cloth base
The mode of knitting does not have particular/special requirement, the knitting skill used using those skilled in the art；In the present invention, the cloth base
Density be preferably (60~75) * (120~150), more preferably (65~70) * (125~145), be most preferably (65~
70) * (130~140)；The thickness of the cloth base is preferably 0.6mm~1mm, in an embodiment of the present invention, the thickness of the cloth base
Degree can be specially 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm.
In the present invention, the mixed solution is coated on the cloth primary surface of fluffing, in the present invention, the nylon loop base
Fine hair area coverage is preferably the 85%~95% of the cloth base gross area, more preferably 87%~93%, most preferably 89%~
92%.In the present invention, the villus length is preferably 1mm~3mm, in an embodiment of the present invention, and the villus length can
Specially 1mm, 2mm or 3mm.In the present invention, the mixed solution is preferably 180g/m in the coated weight of nylon loop primary surface2
~300g/m2, more preferably 200g/m2~280g/m2, most preferably 220g/m2~260g/m2。
The coated mould that the present invention is provided includes binding agent.There is no particular/special requirement to the binding agent in the present invention, use
Binding agent well known to those skilled in the art.In the present invention, the binding agent preferably includes following components：
90 parts~110 parts of epoxy resin；
5 parts~15 parts of butyl ester；
5 parts~15 parts of DMF；
40 parts~60 parts of modified polyamide.
In the present invention, the binding agent preferably includes 90 parts~110 parts epoxy resin, more preferably 95 parts~105 parts,
Most preferably 98 parts~102 parts.The present invention does not have particular/special requirement to the epoxy resin, using well known to those skilled in the art
Epoxy resin.In an embodiment of the present invention, the epoxy resin is specially EP-20, EP-44 or EP-51.
In the present invention, the binding agent preferably includes 5 parts~15 parts butyl esters, more preferably 8 parts~12 parts.The present invention is right
The fourth fat does not have particular/special requirement, using fourth fat well-known to those skilled in the art.
In the present invention, the binding agent preferably includes 5 parts~15 parts DMFs, more preferably 8 parts~12
Part.The present invention does not have particular/special requirement to the DMF, using N well-known to those skilled in the art, N diformazans
Base formamide.
In the present invention, the binding agent preferably includes 40 parts~60 parts of modified polyamide, more preferably 45 parts~55
Part.In the present invention, the modified polyamide is preferably butyronitrile modified polyamide, and the preparation method of the modified polyamide is preferred
Comprise the following steps：
The butyronitrile of presulfurization and amine value are subjected to graft reaction for 250mg KOH/g~350mg KOH/g polyamide, obtained
To modified polyamide；
The number-average molecular weight of the polyamide is 800~1600.
The specific method of butyronitrile of the present invention to obtaining the presulfurization does not have particular/special requirement, using those skilled in the art
The method for pre-sulphuration of well known butyronitrile.In an embodiment of the present invention, the presulfurization of the butyronitrile is specially：In butyronitrile rubber
Sulfur vulcanizing agent 2wt%, activator ZnO 0.5wt%, accelerator benzothiazole sulfide 1.5wt% and solvent nitre are added in glue
Base propane 5wt%, in 80 DEG C~85 DEG C temperature ranges, is stirred 30~60 minutes under 1000~1500rpm rotating speeds.
In the present invention, the mass ratio of the butyronitrile and the polyamide is preferably (5~15): (85~95), more preferably
For (8~12): (88~92).The present invention does not have particular/special requirement to the fourth eyeball, using fourth well-known to those skilled in the art
Eyeball.In the present invention, the amine value of the polyamide is preferably 250mg KOH/g~350mgKOH/g, more preferably
280mg/g~320mg/g；The number-average molecular weight of the polyamide is preferably 800~1600, and more preferably 1000~1500, most
Preferably 1100~1400.
In the present invention, the temperature of the graft reaction is preferably 120 DEG C~180 DEG C, more preferably 130 DEG C~170 DEG C,
Most preferably 140 DEG C~160 DEG C.In the present invention, the time of the graft reaction is preferably 1.5 hours~3 hours, more preferably
For 1.8 hours~2.8 hours, most preferably 2 hours~2.5 hours.
The coated mould that the present invention is provided includes abrasive material, and the present invention does not have particular/special requirement to the abrasive material, using this area
Abrasive material known to technical staff.In the present invention, the abrasive material is preferred to use carborundum, black corundum, white fused alumina and palm fibre
One or more in corundum, the specific abrasive material be one kind in carborundum, black corundum, white fused alumina and Brown Alundum, two kinds,
Three kinds or four kinds.The present invention does not have particular/special requirement to the granularity of the abrasive material, in embodiments of the present invention, the granularity of abrasive material used
Preferably 400#.
The invention provides a kind of preparation method of coated abrasive tool, comprise the following steps：
Polyurethane resin, wood powder, defoamer, levelling agent are mixed with DMF, mixed solution is obtained；
The mixed solution is coated in after nylon loop primary surface, by obtained nylon loop base be placed in coagulating bath split-phase into
Film, obtains perforated membrane；
It will be mixed with abrasive material, and obtain mortar；
Mortar is coated in the porous film surface, coated abrasive tool is obtained.
The present invention mixes polyurethane resin, wood powder, defoamer, levelling agent with DMF, is mixed
Solution.In the present invention, according to the mass fraction, the mixed solution includes following components：
90 parts~110 parts of polyurethane resin；
80 parts~120 parts of DMF；
20 parts~40 parts of wood powder；
0.1 part~2 parts of defoamer；
0.1 part~2 parts of levelling agent.
In the present invention, the mixed solution preferably includes 90 parts~110 parts polyurethane resins, more preferably 95 parts~
105 parts, most preferably 98 parts~103 parts.In the present invention, the modulus of elasticity of the polyurethane resin is preferably 30~80, more
Preferably 40~70, most preferably 50~60.
In the present invention, the mixed solution preferably includes 80 parts~120 parts DMFs, more preferably 90
Part~110 parts, most preferably 95 parts~105 parts.In the present invention, the DMF is the solvent of mixed solution.
In the present invention, the mixed solution preferably includes 20 parts~40 parts wood powders, more preferably 25 parts~35 parts, most
Preferably 28 parts~32 parts.In the present invention, the granularity of the wood powder is preferably greater than 600 mesh.In the present invention, the wood powder
The tack of mixed solution can be improved.
In the present invention, the mixed solution preferably includes 0.1 part~2 parts defoamers, more preferably 0.5 part~1.5 parts,
Most preferably 0.8 part~1.3 parts.In the present invention, the defoamer is preferably silicon class defoamer；In embodiments of the present invention,
The model BYK-3099 produced by German Hua Ke companies defoamer can specifically be used.In the present invention, the defoamer can
To reduce the surface tension of mixed solution, suppress foam and produce and eliminate the foam produced.
In the present invention, the mixed solution preferably includes 0.1 part~2 parts levelling agents, more preferably 0.5 part~1.5 parts,
Most preferably 0.8 part~1.3 parts.In the present invention, the levelling agent is preferably type siloxane levelling agent；In the embodiment of the present invention
In, it can specifically use the model BYK-333 produced by German Hua Ke companies levelling agent.In the present invention, the levelling agent
The surface tension of mixed solution can be reduced, the levelability and uniformity of mixed solution is improved.
In the present invention, each raw material components of above-mentioned mixed solution are commercial goods.
The present invention preferably mixes polyurethane resin, wood powder, defoamer, levelling agent with DMF, obtains
Mixed solution.Obtain after mixed solution, mixed solution is disperseed described in preferred pair.The present invention does not have to the scattered method
Particular/special requirement, using dispersion technology scheme well-known to those skilled in the art.In the present invention, it is preferred to scattered in high speed
The mixed solution is disperseed on machine；The scattered speed is preferably 1000rpm~1400rpm, more preferably
1100rpm~1300rpm, most preferably 1150rpm~1250rpm；The scattered time is preferably 20 minutes~60 minutes,
More preferably 30 minutes~50 minutes, most preferably 35 minutes~45 minutes.
The present invention is preferably disperseed mixed solution.In the present invention, after mixed solution is disperseed, after preferred pair is scattered
Mixed solution carry out deaeration, de-aeration can take the air brought into mixed liquor away, slough bubble.The present invention is to described
Deaeration technology does not have particular/special requirement, using deaeration technology well-known to those skilled in the art.
Obtain after mixed solution, the mixed solution is coated in after nylon loop primary surface by the present invention, by obtained fluffing
Bu Ji is placed in split-phase film forming in coagulating bath, obtains perforated membrane.In the present invention, described in the nylon loop base and above-mentioned technical proposal
Nylon loop base technical scheme it is consistent, will not be repeated here.The present invention does not have special limitation to the method for the coating, adopts
With the technical scheme of coating well known to those skilled in the art, it can such as be applied or roller coat to brush, turning.The present invention is to described
Split-phase film technique in coagulating bath does not have particular/special requirement, is using split-phase film technique well-known to those skilled in the art
Can.In the present invention, the coagulating bath is preferably water；In an embodiment of the present invention, the Bu Ji for being coated with mixed solution is put
Enter in water, allow its freezing film.The present invention does not have particular/special requirement to the species of the water, using well known to those skilled in the art
Water；In the present invention, the water is preferably pure water.
The present invention mixes binding agent and abrasive material, obtains mortar.In the present invention, according to the mass fraction, the mortar
Material preferably includes following components：
140 parts~200 parts binding agents；
200 parts~300 parts abrasive materials.
The present invention does not have particular/special requirement to the hybrid mode of the mortar, using mixing well known to those skilled in the art
Mode.In the present invention, the hybrid mode preferably by epoxy resin be dissolved in butyl ester and DMF composition
In the mixed solvent, obtains resin solution；Modified polyamide is added into the resin solution, is stirred；After the stirring, add
Abrasive material, obtains mortar.
In the present invention, the mortar preferably includes 140 parts~200 parts binding agents, more preferably 150 parts~190 parts,
Most preferably 160 parts~180 parts.In the present invention, the technical side of the binding agent and binding agent described in above-mentioned technical proposal
Case is consistent, will not be repeated here.
In the present invention, the mortar preferably includes 200 parts~300 parts abrasive materials, more preferably 220 parts~280 parts, most
Preferably 240 parts~260 parts.In the present invention, the abrasive material is consistent with the technical scheme of abrasive material described in above-mentioned technical proposal,
It will not be repeated here.
In the present invention, the epoxy resin, butyl ester, DMF butyronitrile, polyamide and abrasive material are commercially available
Product.
Mortar is coated in the porous film surface by the present invention, obtains coated abrasive tool.The present invention is more to mortar is coated in
The coating method on pore membrane surface does not have particular/special requirement, using coating method well known to those skilled in the art, such as can be
Spin coating, brushing or roller coat.In the present invention, the coating method is preferred to use roll coating model.In an embodiment of the present invention, may be used
Mortar is coated in the porous film surface by the specific technological process using shown in Fig. 2, and Fig. 2 is mortar in the embodiment of the present invention
The process flow diagram of coated perforated membrane.In the present invention, the roller coat is preferred to use patterned roll, and the present invention is to the decorative pattern
The decorative pattern of roller does not have specific requirement, can be any decorative pattern.In the present invention, the roller coat is specially：The mortar is put
In patterned roll disk, patterned roll, which is rotated, drives mortar to be attached in patterned roll, and unnecessary mortar is blown off with scraper, remaining
Mortar is transferred on perforated membrane, obtains coated mould.In the present invention, the mesh number of the patterned roll is preferably 50#~70#,
More preferably 55#~65#, most preferably 58#~62#.
The mortar is completed after the coating of porous film surface, preferably obtained product is dried by the present invention, obtains
To coated mould.The present invention does not have particular/special requirement to the method for the drying, using dry skill well known to those skilled in the art
Art scheme.In the present invention, the drying is preferably drying.In an embodiment of the present invention, can be specifically using shown in Fig. 2
Technological process in drying mode the obtained product is dried.In the present invention, the drying is specially to incite somebody to action
To coated mould put on a moving belt through oven drying.In the present invention, the drying temperature is preferably 120 DEG C~170 DEG C, more
Preferably 130 DEG C~160 DEG C, most preferably 140 DEG C~150 DEG C；The drying time is preferably 20 minutes~50 minutes, more excellent
Elect as 25 minutes~45 minutes, most preferably 30 minutes~40 minutes.In the present invention, the speed of the conveyer belt is preferably 3
~8 ms/min, in an embodiment of the present invention, the speed of the conveyer belt can be specially 3 ms/min, 4 ms/min, 5 meters/
Minute, 6 ms/min, 7 ms/min and 8 ms/min.
The invention provides a kind of coated abrasive tool, including substrate layer, binding agent and abrasive material, the substrate layer is perforated membrane；
The perforated membrane is applied by the mixed solution including polyurethane resin, wood powder, defoamer, levelling agent and DMF
Nylon loop primary surface is overlying on, then split-phase film forming is obtained in coagulating bath.In the present invention, by including polyurethane resin, wooden
Powder, defoamer, the mixed solution of levelling agent and DMF are coated on nylon loop primary surface, then in coagulating bath
Split-phase film forming, which obtains perforated membrane, has good resistance to tortuosity, pliability and tensile strength, by the perforated membrane obtain it is coated
Mould has good elasticity, can meet the requirement of accurate production.The coated abrasive tool that the present invention is obtained is damaged in use
Consumption is slow, and service life is long.
Below in conjunction with the embodiment in the present invention, the technical scheme in the present invention is clearly and completely described.It is aobvious
So, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the reality in the present invention
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made all belongs to
In the scope of protection of the invention.
In the following embodiments, raw material is commercial goods, specifically, defoamer is the model that Bi Ke companies of Germany produce
For BYK-3099 defoamer；Levelling agent is the levelling agent for the model BYK-333 that Bi Ke companies of Germany produce.
Embodiment 1：
It is 30 90 parts of polyurethane resin by modulus of elasticity, 80 parts of DMF solvent, 20 parts of wood powder, disappears
The 0.1 part of mixing of 0.1 part of infusion and levelling agent, obtains mixed solution.
By obtained mixed solution on high speed dispersor with 1000rpm Rate Dispersion 20 minutes；Then after disperseing
Mixed solution through vacuum machine deaeration.
It is coated weight on 60*120 TC cloth bases that mixed solution after above-mentioned deaeration is coated in the Density fluffed
For 180g/m2, the fine hair area coverage of cloth base is the 85% of the cloth base gross area, villus length about 2mm.
The Bu Ji for being coated with mixed solution is placed in split-phase film forming in clear water, obtains perforated membrane.
Sulfur vulcanizing agent 2wt%, activator ZnO 0.5wt%, the vulcanization of accelerator benzothiazole are added in nitrile rubber
Thing 1.5wt% and solvent nitropropane 5wt%, in 80 DEG C of temperature ranges, is stirred 30 minutes under 1000~1500rpm rotating speeds,
Obtain presulfurization butyronitrile.
It at 120 DEG C with 95 parts of amine values is 250mg KOH/g number-average molecular weights to be in temperature by 5 parts of good butyronitrile of presulfurization
For 800 polyamide reaction 1.5 hours, modified polyamide is made.
90 parts of epoxy resin -20 is dissolved in the in the mixed solvent of 5 parts of butyl esters and 5 parts of DMFs, obtained
Resin solution；40 parts of modified polyamides are added into resin solution again, are stirred；200 are added thereto again after well mixed
Part 400# white fused alumina, stirs, obtains mortar.
Above-mentioned mortar is placed in patterned roll disk, patterned roll is contacted with mortar.Patterned roll drives sand when rotating
Slurry is attached in patterned roll, and scraper blows unnecessary mortar off, remaining mortar be transferred to put on a moving belt and with flower
On the perforated membrane of line roller contact, the perforated membrane for being coated with mortar is sent to drying in baking oven with conveyer belt, and drying temperature is 120
DEG C, line speed is 3 ms/min, and drying time is 20 minutes, obtains coated mould A.
The present invention detects to obtained coated mould A grinding capacity and abrasion-resistance, wherein grinding capacity detection
The rotating speed of experiment is 12000rpm, and grinding object is aluminium sheet；The rotating speed of abrasion-resistance test experience is 12000rpm, grinding object
For aluminium sheet.
As shown in Table 1 and Table 2, table 1 is products and marketing existing product grinding capacity contrast table of the present invention, table to testing result
2 be products and marketing existing product abrasion-resistance contrast table of the present invention.
Embodiment 2：
By modulus of elasticity for 50 100 parts of polyurethane resin, 100 parts of DMF solvent, 30 parts of wood powder,
The 1 part of mixing of 1 part of defoamer and levelling agent, obtains mixed solution.
By obtained mixed solution on high speed dispersor with 1200rpm Rate Dispersion 40 minutes.Then after disperseing
Mixed solution through vacuum machine deaeration.
It is coated weight on 70*130 TC cloth bases that mixed solution after above-mentioned deaeration is coated in the Density fluffed
For 240g/m2, the fine hair area coverage of cloth base is the 90% of the cloth base gross area, villus length about 2mm.
The Bu Ji for being coated with mixed solution is placed in split-phase film forming in clear water, perforated membrane is obtained.
Sulfur vulcanizing agent 2wt%, activator ZnO 0.5wt%, the vulcanization of accelerator benzothiazole are added in nitrile rubber
Thing 1.5wt% and solvent nitropropane 5wt%, in 82 DEG C of temperature ranges, is stirred 40 minutes under 1000~1500rpm rotating speeds,
Obtain presulfurization butyronitrile.
It at 150 DEG C with 90 parts of amine values is 300mg KOH/g, the equal molecule of number to be in temperature by 10 parts of good butyronitrile of presulfurization
The polyamide reaction 2 hours for 1000 is measured, modified polyamide is made.
100 parts of epoxy resin -44 is dissolved in the in the mixed solvent of 10 parts of butyl esters and 10 parts of DMFs,
Resin solution is obtained, then 50 parts of modified polyamides are added into resin solution, is stirred；It is well mixed to add thereto again
250 parts of 400# black corundum, stirs, and obtains mortar.
Above-mentioned mortar is placed in patterned roll disk, patterned roll is contacted with mortar.Patterned roll drives sand when rotating
Slurry is attached in patterned roll, and scraper blows unnecessary mortar off, remaining mortar be transferred to put on a moving belt and with flower
On the perforated membrane of line roller contact, the perforated membrane for being coated with mortar is sent to drying in baking oven with conveyer belt, and drying temperature is 120
DEG C, line speed is 3 ms/min, and drying time is 20 minutes, obtains coated mould B.
The grinding for the coated mould B that the present invention is obtained according to the detection method and testing conditions of embodiment 1 to the present embodiment
Ability and abrasion-resistance are detected that testing result is as shown in Table 1 and Table 2.
Embodiment 3：
By modulus of elasticity for 80 110 parts of polyurethane resin, 120 parts of DMF solvent, 40 parts of wood powder,
The 2 parts of mixing of 2 parts of defoamer and levelling agent, obtain mixed solution.
By obtained mixed solution on high speed dispersor with 1400rpm Rate Dispersion 60 minutes；Then after disperseing
Mixed solution through vacuum machine deaeration.
It is coated weight on 75*150 TC cloth bases that mixed solution after above-mentioned deaeration is coated in the Density fluffed
For 300g/m2, the fine hair area coverage of cloth base is the 95% of the cloth base gross area, villus length about 2mm.
The Bu Ji for being coated with mixed solution is placed in split-phase film forming in clear water, obtains perforated membrane.
Sulfur vulcanizing agent 2wt%, activator ZnO 0.5wt%, the vulcanization of accelerator benzothiazole are added in nitrile rubber
Thing 1.5wt% and solvent nitropropane 5wt%, in 85 DEG C of temperature ranges, is stirred 50 minutes under 1000~1500rpm rotating speeds,
Obtain presulfurization butyronitrile.
It at 180 DEG C with 85 parts of amine values is 350mg KOH/g, the equal molecule of number to be in temperature by 15 parts of good butyronitrile of presulfurization
The polyamide reaction 3 hours for 1600 is measured, modified polyamide is made.
110 parts of epoxy resin -51 is dissolved in the in the mixed solvent of 15 parts of butyl esters and 15 parts of DMFs,
Obtain resin solution；60 parts of modified polyamides are added into resin solution again, are stirred；Added thereto again after well mixed
300 parts of 400# carborundum, stirs, and obtains mortar.
Above-mentioned mortar is placed in patterned roll disk, patterned roll is contacted with mortar.Patterned roll drives sand when rotating
Slurry is attached in patterned roll, and scraper blows unnecessary mortar off, remaining mortar be transferred to put on a moving belt and with flower
On the perforated membrane of line roller contact, the perforated membrane for being coated with mortar is sent to drying in baking oven with conveyer belt, and drying temperature is 180
DEG C, line speed is 5 ms/min, and drying time is 40 minutes, obtains coated mould C.
The grinding for the coated mould C that the present invention is obtained according to the detection method and testing conditions of embodiment 1 to the present embodiment
Ability and abrasion-resistance are detected that testing result is as shown in Table 1 and Table 2.
The products and marketing existing product grinding capacity contrast table of the present invention of table 1
| Title | The grinding time | Stock removal |
| Coated mould A | 1 minute | 5.8g |
| Coated mould B | 1 minute | 5.6g |
| Coated mould C | 1 minute | 6.1g |
| The existing coated mould in market | 1 minute | 4.2g |
As it can be seen from table 1 the grinding capacity for the coated abrasive tool that the present invention is provided is carried compared with the existing coated abrasive tool of in the market
High 39%, far superior to existing product.
The products and marketing existing product abrasion-resistance contrast table of the present invention of table 2
Ra- profile arithmetic average errors：In sample length, the arithmetic mean of instantaneous value of profile offset distance absolute value.
10 points of height of Rz- nao-and micro reliefs：In sample length the average value of maximum profile peak height and five it is maximum
The deep average value sum of profile paddy.
From table 2 it can be seen that the application product grinding 1 minute after with grinding 10 seconds after compared with, its roughness be averaged
Decline 12.15%, and in the market existing product grinding 1 minute after with grinding 10 seconds after compared with, its roughness averagely declines
36.55%.Data result in table 2 shows coated abrasive tool made from the application compared with the market existing product more in use
Loss is slow, more robust.
Found out by above experimental result, the coated abrasive tool that the present invention is provided not only has more preferable grinding force, and makes
It is lost slowly during, service life is long.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of coated abrasive tool, including substrate layer, binding agent and abrasive material, it is characterised in that the substrate layer is perforated membrane；
The perforated membrane is by including polyurethane resin, wood powder, defoamer, levelling agent and N, the mixing of N-dimethylformamide is molten
Liquid is coated on nylon loop primary surface, and then split-phase film forming is obtained in coagulating bath；
The coagulating bath is water；
The fine hair area coverage of the nylon loop base is the 85%~95% of the cloth base gross area, and villus length is 1mm~3mm；
The mixed solution includes following components：
90 parts~110 parts of polyurethane resin；
N, 80 parts~120 parts of N-dimethylformamide；
20 parts~40 parts of wood powder；
0.1 part~2 parts of defoamer；
0.1 part~2 parts of levelling agent.
2. coated abrasive tool according to claim 1, it is characterised in that the modulus of elasticity of the polyurethane resin is 30~
80。
3. coated abrasive tool according to claim 1, it is characterised in that coating of the mixed solution in nylon loop primary surface
Measure as 180g/m2~300g/m2。
4. the preparation method of coated abrasive tool, comprises the following steps described in a kind of claims 1 to 3 any one：
Polyurethane resin, wood powder, defoamer, levelling agent are mixed with DMF, mixed solution is obtained；
The mixed solution is coated in after nylon loop primary surface, obtained nylon loop base is placed in split-phase film forming in coagulating bath,
Obtain perforated membrane；
Binding agent and abrasive material are mixed, mortar is obtained；
Mortar is coated in porous film surface, coated abrasive tool is obtained.
5. preparation method according to claim 4, it is characterised in that the mixed solution includes following components：
90 parts~110 parts of polyurethane resin；
N, 80 parts~120 parts of N-dimethylformamide；
20 parts~40 parts of wood powder；
0.1 part~2 parts of defoamer；
0.1 part~2 parts of levelling agent.
6. preparation method according to claim 4, it is characterised in that the binding agent includes following components：
90 parts~110 parts of epoxy resin；
5 parts~15 parts of butyl ester；
N, 5 parts~15 parts of N-dimethylformamide；
40 parts~60 parts of modified polyamide.
7. preparation method according to claim 4, it is characterised in that the mortar includes following components：
140 parts~200 parts binding agents；
200 parts~300 parts abrasive materials.
8. preparation method according to claim 6, it is characterised in that the preparation method of the modified polyamide includes following
Step：
The butyronitrile of presulfurization and amine value are subjected to graft reaction for 250mg KOH/g~350mg KOH/g polyamide, changed
Property polyamide；
The number-average molecular weight of the polyamide is 800~1600.
9. preparation method according to claim 8, it is characterised in that the temperature of the graft reaction is 120 DEG C~180
℃；
The time of the graft reaction is 1.5 hours~3 hours.
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| CN108908145B (en) * | 2018-07-02 | 2020-09-11 | 河南烨达新材科技股份有限公司 | Polishing abrasive belt and preparation method thereof |
| CN108908146B (en) * | 2018-07-02 | 2020-09-11 | 河南烨达新材科技股份有限公司 | Black corundum abrasive belt and preparation method thereof |
| CN109909895A (en) * | 2019-02-25 | 2019-06-21 | 常州市奥普泰克光电科技有限公司 | A kind of preparation method of multiple grinding piece |
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| JP6188286B2 (en) * | 2012-07-13 | 2017-08-30 | スリーエム イノベイティブ プロパティズ カンパニー | Polishing pad and glass, ceramics, and metal material polishing method |
| CN103692365B (en) * | 2013-10-09 | 2016-01-20 | 江苏锋芒复合材料科技集团有限公司 | A kind of cloth base class back of the body suede coated abrasive tool product |
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Address after: 511853 No. 1 Building, No. 2 Nianfeng Road, Yingfu Industrial Park, Taiping Town, Qingxin District, Qingyuan City, Guangdong Province Patentee after: QINGYUAN BAIJIA GRINDING TECHNOLOGY Co.,Ltd. Address before: 511500 No. 5, No. 30 Qingdao West, Taihe Town, Qingxin District, Qingyuan City, Guangdong Province Patentee before: QINGYUAN BAIJIA GRINDING TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20220825 Address after: 511873 Factory Building No. 13, Nanbei Xiaxin Village, Taiping Town, Qingxin District, Qingyuan City, Guangdong Province Patentee after: Qingyuan Baiyou Abrasive Materials Co.,Ltd. Address before: 511853 No. 1 Building, No. 2 Nianfeng Road, Yingfu Industrial Park, Taiping Town, Qingxin District, Qingyuan City, Guangdong Province Patentee before: QINGYUAN BAIJIA GRINDING TECHNOLOGY Co.,Ltd. |
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