CN110788766B - Intelligent organic grinding tool and preparation method and recovery method thereof - Google Patents
Intelligent organic grinding tool and preparation method and recovery method thereof Download PDFInfo
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- 238000000227 grinding Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title abstract description 19
- 238000011084 recovery Methods 0.000 title abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 65
- 239000011159 matrix material Substances 0.000 claims abstract description 52
- 238000004519 manufacturing process Methods 0.000 claims abstract description 27
- 239000011148 porous material Substances 0.000 claims abstract description 20
- 150000001875 compounds Chemical class 0.000 claims abstract description 19
- 230000000638 stimulation Effects 0.000 claims abstract description 18
- 239000003082 abrasive agent Substances 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 229920000642 polymer Polymers 0.000 claims description 49
- 239000004814 polyurethane Substances 0.000 claims description 29
- 229920002635 polyurethane Polymers 0.000 claims description 29
- DMLAVOWQYNRWNQ-UHFFFAOYSA-N azobenzene Chemical group C1=CC=CC=C1N=NC1=CC=CC=C1 DMLAVOWQYNRWNQ-UHFFFAOYSA-N 0.000 claims description 23
- 239000000758 substrate Substances 0.000 claims description 22
- 239000000725 suspension Substances 0.000 claims description 15
- 238000006116 polymerization reaction Methods 0.000 claims description 13
- 238000004064 recycling Methods 0.000 claims description 6
- 238000005286 illumination Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000004298 light response Effects 0.000 claims description 3
- 229920000620 organic polymer Polymers 0.000 abstract description 8
- 239000002861 polymer material Substances 0.000 abstract description 2
- 239000002520 smart material Substances 0.000 description 20
- 238000006243 chemical reaction Methods 0.000 description 11
- 229910003460 diamond Inorganic materials 0.000 description 11
- 239000010432 diamond Substances 0.000 description 11
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- 238000010438 heat treatment Methods 0.000 description 10
- 239000002245 particle Substances 0.000 description 10
- 238000010992 reflux Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
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- 229910052757 nitrogen Inorganic materials 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000012975 dibutyltin dilaurate Substances 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000001678 irradiating effect Effects 0.000 description 4
- 229920000208 temperature-responsive polymer Polymers 0.000 description 4
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 3
- QPQKUYVSJWQSDY-CCEZHUSRSA-N 4-(phenylazo)aniline Chemical compound C1=CC(N)=CC=C1\N=N\C1=CC=CC=C1 QPQKUYVSJWQSDY-CCEZHUSRSA-N 0.000 description 3
- 229910052582 BN Inorganic materials 0.000 description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- BJZYYSAMLOBSDY-QMMMGPOBSA-N (2s)-2-butoxybutan-1-ol Chemical compound CCCCO[C@@H](CC)CO BJZYYSAMLOBSDY-QMMMGPOBSA-N 0.000 description 2
- RBNPOMFGQQGHHO-UHFFFAOYSA-N -2,3-Dihydroxypropanoic acid Natural products OCC(O)C(O)=O RBNPOMFGQQGHHO-UHFFFAOYSA-N 0.000 description 2
- BTWNEJOURYOHME-UHFFFAOYSA-N 1,3-thiazol-2-ylhydrazine Chemical compound NNC1=NC=CS1 BTWNEJOURYOHME-UHFFFAOYSA-N 0.000 description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000004440 column chromatography Methods 0.000 description 2
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
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- 238000012545 processing Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- QVCUKHQDEZNNOC-UHFFFAOYSA-N 1,2-diazabicyclo[2.2.2]octane Chemical compound C1CC2CCN1NC2 QVCUKHQDEZNNOC-UHFFFAOYSA-N 0.000 description 1
- PBKCJNOFHGLNEZ-UHFFFAOYSA-N 4-[(4-methylphenyl)diazenyl]aniline Chemical compound C1=CC(C)=CC=C1N=NC1=CC=C(N)C=C1 PBKCJNOFHGLNEZ-UHFFFAOYSA-N 0.000 description 1
- BVRIUXYMUSKBHG-UHFFFAOYSA-N 4-[[4-(dimethylamino)phenyl]diazenyl]aniline Chemical compound C1=CC(N(C)C)=CC=C1N=NC1=CC=C(N)C=C1 BVRIUXYMUSKBHG-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- 238000004904 shortening Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical group [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/001—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as supporting member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0027—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by impregnation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention relates to an intelligent organic grinding tool, a preparation method and a recovery method thereof, and belongs to the technical field of grinding tools. The intelligent organic grinding tool comprises a base body and an abrasive; the matrix is formed by curing a high-molecular intelligent material serving as a main raw material; at least part of the abrasive is bound and fixed in the pore channels of the matrix by groups which generate structural change after corresponding stimulation in the compound molecules in the matrix. At least part of the abrasive materials in the intelligent organic grinding tool are fixed in the pore channels of the matrix due to structural changes after the intelligent groups in the compound of the solidified polymer material in the matrix are correspondingly stimulated, so that after the intelligent organic grinding tool is subjected to opposite stimulation, the structures of the groups are changed again, and the abrasive materials bound by the groups can automatically fall off from the intelligent organic grinding tool. The intelligent organic grinding tool disclosed by the invention is simple in manufacturing process, easy to post-process and convenient for green recovery of the grinding materials and the organic polymers.
Description
Technical Field
The invention relates to an intelligent organic grinding tool, a preparation method and a recovery method thereof, and belongs to the technical field of grinding tools.
Background
The organic abrasive tool combines the flexibility of organic polymer and the rigidity of inorganic abrasive material to form a grinding tool with certain strength. In the organic grinding tool, grinding materials have a grinding function, organic polymers are carriers of a bonded grinding tool, and the core of manufacturing the intelligent organic grinding tool is manufacturing intelligent organic polymer carriers. The traditional organic grinding tool manufacturing process comprises the following steps: firstly, physically mixing organic polymer, abrasive and other additives, then placing the uniformly mixed material in a mould for compression moulding, curing the moulded block-shaped grinding tool by adopting heating and other modes, and finally carrying out post-processing treatment on the cured grinding tool according to actual requirements. The traditional process is complicated in manufacturing process and needs a large number of matched facilities such as a mixer, a press, an oven and the like. In addition, the cured organic abrasive tools (particularly superabrasive tools) contain a large amount of abrasive material causing post processing difficulties. Once the manufactured grinding tool is not ideal, organic polymers can be removed only by a high-temperature heating mode, and the organic polymers and inorganic grinding materials cannot be recycled in a green and efficient mode.
Disclosure of Invention
The invention aims to provide an intelligent organic grinding tool which has the advantages of simple recovery process and low energy consumption.
The invention also provides a preparation method of the intelligent organic grinding tool, and the intelligent organic grinding tool prepared by the method has the advantages of simple recovery process and low energy consumption.
The invention also provides a recycling method of the intelligent organic grinding tool, which is simple in process and low in energy consumption.
In order to achieve the purpose, the intelligent organic grinding tool adopts the technical scheme that:
an intelligent organic abrasive tool comprises a base body and an abrasive material; the matrix is formed by curing a high-molecular intelligent material serving as a main raw material; at least part of the abrasive is bound and fixed in the pore channels of the matrix by groups which generate structural change after corresponding stimulation in the compound molecules in the matrix.
At least part of the abrasive materials in the intelligent organic grinding tool are fixed in the pore channels of the matrix due to structural changes after the intelligent groups in the compound of the high molecular intelligent material solidified in the matrix are correspondingly stimulated, so that after the intelligent organic grinding tool is subjected to opposite stimulation, the structures of the groups are changed again, and the abrasive materials bound by the groups can automatically fall off from the pore channels of the intelligent organic grinding tool. Therefore, the intelligent organic grinding tool realizes controllable loading of the grinding material, has simple manufacturing process and easy post-processing, and is convenient for green recovery of the grinding material and the organic high polymer material.
Preferably, the polymer smart material is selected from one of a photo-responsive polymer smart material and a thermo-responsive polymer smart material.
Preferably, the photoresponsive polymer smart material is selected from polymer smart materials with azobenzene groups and/or spiropyran groups.
The photoresponsive polymer intelligent material is selected from polymer intelligent materials with azobenzene groups and/or spiropyran groups, and preferably, the photoresponsive polymer intelligent material is selected from polyurethane with azobenzene groups and/or spiropyran groups.
The photoresponse type polymer intelligent material is selected from polymer intelligent materials with azobenzene groups and/or spiropyran groups, preferably the photoresponse type polymer intelligent material is selected from polyurethane with azobenzene groups and/or spiropyran groups, further preferably the photoresponse type polymer intelligent material is polyurethane with a structure shown in a formula I, wherein the average polymerization degree n is 8-10, R is selected from-H and-CH3、-N(CH3)2One of (1):
in the prior art, any kind of grinding materials can be used for the intelligent organic grinding tool, and in order to facilitate the grinding materials to enter the pore channels of the matrix, the average grain diameter of the grinding materials is preferably 20-80 nm.
The preparation method of the intelligent organic grinding tool adopts the technical scheme that:
a method for preparing an intelligent organic abrasive tool comprises the steps of immersing a substrate into a suspension of abrasive materials for corresponding stimulation; the matrix is formed by curing a high-molecular intelligent material serving as a main raw material.
According to the preparation method of the intelligent organic grinding tool, the molecular structure of a compound in a matrix formed by curing a polymer intelligent material is changed under the external stimulation by utilizing the molecular structure change of the polymer intelligence, so that the molecular structure of the compound in the matrix is changed (such as the extension and/or the shortening of a polymer chain) after the compound is stimulated by the external, and the pore size of the surface of the matrix can be changed, so that after the matrix is immersed into a suspension of an abrasive, the abrasive can enter a pore channel of the matrix, abrasive particles are fixed in the pore channel of the matrix in the process that the molecular structure of the compound in the matrix is changed after the external stimulation is applied, the intelligent grinding tool is placed in a blank liquid, opposite external stimulation is given, the micro-pore structure of the intelligent polymer is recovered as before, and the abrasive can automatically fall; in addition, the change of the microstructure of the molecules in the matrix is usually accompanied by the change of the color of the substance, so that the loading/unloading degree of the abrasive on the matrix can be conveniently judged according to the color change. The preparation method of the intelligent organic grinding tool has simple process, and the prepared intelligent organic grinding tool is easy to post-process, and the grinding material and the organic polymer are convenient to recycle.
In order to reduce the cost and enable the abrasive to have enough driving force to enter the pore channels of the base body, the concentration of the abrasive in the suspension is preferably 10-40 g/L.
Preferably, the polymer smart material is selected from one of a photo-responsive polymer smart material and a thermo-responsive polymer smart material.
Preferably, the photoresponsive polymer smart material is selected from polymer smart materials with azobenzene groups and/or spiropyran groups.
Preferably, the light-responsive polymer smart material is selected from polyurethane with azobenzene group and/or spiropyran group.
Preferably, the photoresponse type polymer intelligent material is polyurethane with a structure shown as a formula I, wherein the average polymerization degree n is 8-10, and R is selected from-H and-CH3、-N(CH3)2One kind of (1).
In order to enable the abrasive to enter the pore channels of the base body better, the average grain diameter of the abrasive is preferably 20-80 nm.
The polymer intelligent material is a photoresponse polymer intelligent material; the corresponding stimulus is illumination with ultraviolet and/or visible light. The light response type polymer intelligent material is adopted, so that the stimulation process can be simplified, and the production cost is reduced.
The recovery method of the intelligent organic grinding tool adopts the technical scheme that:
the method for recycling the intelligent organic grinding tool comprises the following steps: and placing the intelligent organic grinding tool in the blank liquid of the grinding material for corresponding stimulation.
The method for recycling the intelligent organic grinding tool has the advantages of simple process and low recycling cost, and the recycled materials can be reused, so that the method has good economic benefit.
Drawings
FIG. 1 is a schematic view of a matrix of a smart organic abrasive in example 9 of the present invention;
FIG. 2 is a schematic view of an intelligent organic abrasive article according to example 9 of the present invention;
wherein, 1-compound molecule of high molecular intelligent material solidified in matrix, 2-azobenzene group, 3-matrix, 4-grinding material, and 5-intelligent organic grinding tool.
Detailed Description
The invention provides an intelligent organic grinding tool, which comprises a base body and an abrasive; the matrix is formed by curing a high-molecular intelligent material serving as a main raw material; at least part of the abrasive is bound and fixed in the pore channels of the matrix by groups which generate structural change after corresponding stimulation in the compound molecules in the matrix. The structural change in the technical scheme of the invention is the change of the spatial configuration of the group.
Preferably, all the abrasives are fixed in the pore channels of the matrix in a manner that the groups in the compound molecules in the matrix generate structural changes after being subjected to corresponding stimulation. The compound is formed by curing a high-molecular intelligent material.
Preferably, the polymer smart material is selected from one of a photo-responsive polymer smart material and a thermo-responsive polymer smart material. The average particle size of the abrasive is 20-80 nm, and preferably 20-50 nm.
Preferably, the photoresponsive polymer smart material is selected from polymer smart materials with azobenzene groups and/or spiropyran groups. The azobenzene and the spiropyran are stimulated correspondingly and respectively shown as a formula I and a formula II, after the macromolecular intelligent material with the azobenzene and/or the spiropyran is stimulated correspondingly, the azobenzene group and the spiropyran group on the molecular structure are changed, and after the macromolecular intelligent material is stimulated reversely again, the structure is restored. The azobenzene group and the spiropyran group can be independently selected and positioned on the main chain or the branched chain of the molecule of the high-molecular intelligent material.
Preferably, the light-responsive polymer smart material is selected from polyurethane with azobenzene group and/or spiropyran group.
Preferably, the photoresponse type polymer intelligent material is polyurethane with a structure shown in a formula I.
The invention provides a preparation method of an intelligent organic grinding tool, which comprises the following steps: immersing the substrate into the suspension of the abrasive material for corresponding stimulation to obtain the abrasive material; the matrix is formed by curing a high-molecular intelligent material serving as a main raw material. The suspension preferably has water as the dispersing agent. The average particle size of the abrasive is 20-80 nm, and preferably 20-50 nm.
Preferably, the polymer intelligent material is a photoresponse polymer intelligent material; the corresponding stimulus is illumination with ultraviolet and/or visible light. Preferably, the illumination time is 0.5-2 h.
Preferably, the concentration of the grinding material in the suspension is 10-40 g/L. The time for soaking the substrate in the suspension is 0.5-4 h.
Preferably, the polymer smart material is selected from one of a photo-responsive polymer smart material and a thermo-responsive polymer smart material. The photoresponse type polymer intelligent material is polyurethane with a structure shown as a formula I, wherein the average polymerization degree n is 8-10, R is selected from-H and-CH3、-N(CH3)2One kind of (1).
In the intelligent organic grinding tool and the preparation method of the intelligent organic grinding tool provided by the invention, the adopted polyurethane with the structure shown as the formula I can be prepared by adopting a method comprising the following steps:
1) dissolving DL-glyceric acid and a compound shown as a formula II in methanol according to a molar ratio of 1:1, adjusting the pH value to 11 by using sodium carbonate, and carrying out reflux reaction for 8 hours; in the formula II, R is selected from-H and-CH3、-N(CH3)2One of (1);
after the reaction is finished, evaporating the solvent, adding a small amount of water, extracting with ethyl acetate for three times, collecting an organic phase, spin-drying, performing column chromatography, and collecting a product, wherein the product is named as L1，L1The structural formula of (A) is shown in formula III:
2) mixing L with1Dissolving the mixture and hexamethylene diisocyanate in toluene according to a molar ratio of 1:1.5, refluxing for 10 hours by using dibutyltin Dilaurate (DBTL) as a catalyst, evaporating the solvent after the reaction is finished, and collecting the product to obtain the catalyst.
The invention provides a method for recovering an intelligent organic grinding tool, which comprises the following steps: and placing the intelligent organic grinding tool in the blank liquid of the grinding material for corresponding stimulation. The stimulation to the blank liquid of the abrasive can restore the compound molecules in the grinding tool matrix to the state before the abrasive is fixed on the matrix, thereby greatly improving the recovery rate of the abrasive, and the recovery rate of the abrasive can reach 60 percent through calculation.
The technical solution of the present invention will be further described with reference to the following embodiments.
Examples of methods for preparing Intelligent organic abrasive tools
Example 1
The preparation method of the intelligent organic abrasive tool comprises the following steps:
1) preparation of polyurethane with azobenzene groups: dissolving DL-glyceric acid and p-aminoazobenzene in methanol according to the molar ratio of 1:1, adjusting the pH value to 11 by using sodium carbonate, and carrying out reflux reaction for 8 hours; after the reaction is finished, evaporating the solvent, adding a small amount of water, extracting with ethyl acetate for three times, collecting an organic phase, spin-drying, performing column chromatography, and collecting a product, wherein the product is named as L1，L1The structural formula of (A) is shown as follows:
mixing L with1Dissolving the polyurethane and hexamethylene diisocyanate in toluene according to a molar ratio of 1:1.5, refluxing for 10 hours by using dibutyltin Dilaurate (DBTL) as a catalyst, evaporating the solvent after the reaction is finished, and collecting a product to obtain polyurethane with the average polymerization degree n of 9;
2) adding the prepared polyurethane (the average polymerization degree n is 9) into a mold, heating to 90 ℃ for curing, and processing into a shape for grinding to prepare a matrix;
adding diamond grinding materials with the average grain diameter of 30nm into water, and uniformly mixing to prepare suspension with the grinding material concentration of 20 g/L;
3) immersing the substrate prepared in the step 1) into the prepared suspension for 2 hours, and then irradiating the substrate for 1 hour by using ultraviolet light to obtain the ultraviolet-cured transparent conductive film.
Example 2
The preparation method of the intelligent organic abrasive tool comprises the following steps:
1) adding cubic boron nitride abrasive with the average grain diameter of 20nm into water, and uniformly mixing to prepare suspension with the abrasive concentration of 10 g/L;
2) immersing the substrate prepared in the example 1 in the suspension prepared in the step 1) for 4 hours, and then irradiating the substrate by ultraviolet light for 1 hour.
In other embodiments of the method for preparing the intelligent organic abrasive tool, the irradiation time of the ultraviolet light in the step 2) of the embodiment 2 can be prolonged to 2 hours or shortened to 0.5 hour.
Example 3
The method for manufacturing the intelligent organic abrasive tool of the present example is different from the method for manufacturing the intelligent organic abrasive tool of example 1 in that: the matrix used was prepared according to the following method: the polyurethane prepared in example 1 and the epoxy resin were mixed uniformly at a mass ratio of 1:0.2, and then cured by heating at 90 ℃, and then processed into a shape for grinding to prepare a substrate.
Example 4
The preparation method of the intelligent organic abrasive tool comprises the following steps:
1) weighing 2g of dihydroxyspiropyran, dissolving the dihydroxyspiropyran in 3L of N, N-Dimethylformamide (DMF), adding 6g of 1, 4-diazabicyclo [2.2.2] octane (DABCO) into the solution, and dissolving to form a solution A; weighing 72g of diphenylmethane diisocyanate (MDI) and dissolving the 72g of MDI in 1L of DMF to form a solution B, transferring the solution B into a three-neck flask (a nitrogen pipe, a reflux condenser pipe and a thermometer are respectively inserted into three necks), slowly dripping the solution A into the three-neck flask, regulating the temperature to 60 ℃, and reacting for 1 hour to obtain-NCO end-capped spiropyran;
2) weighing 3kg of polytetrahydrofuran diol (2000) (PTMG 2000) (dehydrated for 4h in vacuum at 120 ℃) and placing the polytetrahydrofuran diol (2000) (PTMG 2000) (dehydrated for 4h in vacuum at 120 ℃) into a four-mouth flask, inserting a mechanical stirring device, a nitrogen pipe, a thermometer and a reflux condenser into the four mouths respectively, transferring the solution in the three-mouth flask into the four-mouth flask, adjusting the temperature to 80 ℃, changing the reflux device into a distilling device, removing DMF solvent in vacuum, distilling for 30min, judging that the solvent is basically completely eliminated when no bubbles exist in the flask, introducing nitrogen, adding 998g of isophorone diisocyanate (IPDI) and 2g of DABCO into the solution for reaction, measuring the-NCO content in the prepolymer in the reaction process until the theoretical value is reached (the theoretical value of-NCO in the prepolymer is 1.13 x 10-4mol; the determination method is di-n-butylamine titration).
3) after-NCO reaches a theoretical value, keeping nitrogen introduction and temperature unchanged, adding 214g of 1, 4-Butanediol (BDO) into a four-neck flask for chain extension reaction, stopping nitrogen introduction after reaction for about 20min, carrying out degassing and foaming treatment on a system, after reaction for 10min, pouring a product into a mold, heating to 90 ℃ for solidification, and then processing into a shape for grinding to obtain a substrate;
4) adding diamond grinding materials with the average grain diameter of 20nm into water, and uniformly mixing to prepare suspension with the grinding material concentration of 40 g/L;
5) immersing the substrate prepared in the step 3) into the suspension prepared in the step 4) for 0.5h, and then irradiating the substrate for 1h by using ultraviolet light to obtain the ultraviolet-cured transparent conductive film.
Steps 1) to 3) of this example were carried out with reference to the preparation of functionalized polyurethanes on page 36 of the study on the preparation of polyurethanes containing spiropyrans and their fluorescence properties (hanzi 2018, 06 months, master's academic thesis, guangdong university of industry).
In other embodiments of the method for manufacturing an intelligent organic abrasive tool according to the present invention, the diamond abrasive used in example 4 may be replaced with silicon carbide having an average particle size of 50 nm.
Example 5
The method for manufacturing the intelligent organic abrasive tool of the present example is different from the method for manufacturing the intelligent organic abrasive tool of example 1 only in that: the abrasive used was diamond with an average particle size of 40 nm.
Example 6
The method for manufacturing the intelligent organic abrasive tool of the present example is different from the method for manufacturing the intelligent organic abrasive tool of example 1 only in that: the abrasive used was cubic boron nitride with an average particle size of 30 nm.
Example 7
The method for manufacturing the intelligent organic abrasive tool of the present example is different from the method for manufacturing the intelligent organic abrasive tool of example 1 in that: replacing p-aminoazobenzene adopted in the preparation of polyurethane in the step 1) with 4' -methyl-4-aminoazobenzene, wherein the average polymerization degree of the prepared polyurethane is 9; the abrasive used was diamond with an average particle size of 80 nm.
In other embodiments of the method for manufacturing an intelligent organic abrasive tool according to the present invention, the abrasive used in example 7 may be replaced with diamond having an average particle size of 30 nm.
Example 8
The method for manufacturing the intelligent organic abrasive tool of the present example is different from the method for manufacturing the intelligent organic abrasive tool of example 1 in that: replacing the p-aminoazobenzene adopted in the preparation of the polyurethane in the step 1) with 4-amino-4' -dimethylamino-azobenzene, wherein the average polymerization degree of the prepared polyurethane is 9.
In other embodiments of the method for manufacturing an intelligent organic abrasive tool according to the present invention, the abrasive used in example 8 may be replaced with diamond having an average particle size of 80 nm.
Examples of Intelligent organic abrasive tools
Example 9
As shown in fig. 1-2, the intelligent organic grinding tool 5 of the present embodiment includes a base 3 and an abrasive 4; the substrate is prepared by heating and curing polyurethane (average polymerization degree n is 9, R is-H) with a structure shown in formula I, and the thickness is 1 mm; the grinding material is restrained and fixed in a pore channel of the matrix by azobenzene groups 2 in compound molecules 1 after the high-molecular intelligent material is cured in the matrix; the abrasive is diamond with the average grain diameter of 40 nm; the mass of abrasive fixed per cubic centimeter of substrate was 2.3 g.
The intelligent organic abrasive tool of this example was prepared according to the method of example 5.
Example 10
The intelligent organic abrasive tool comprises a base body and an abrasive; the substrate is prepared by heating and curing polyurethane (average polymerization degree n is 9, R is-H) with a structure shown in formula I, and the thickness is 1 mm; the abrasive is restrained and fixed in the pore canal of the matrix by the azobenzene group in the compound molecule in the matrix; the abrasive is cubic boron nitride with the average grain diameter of 30 nm; the mass of abrasive fixed on a cubic centimeter substrate was 1.9 g.
The intelligent organic abrasive tool of this example was prepared according to the method of example 6, which is the method of preparing the intelligent organic abrasive tool.
Example 11
The intelligent organic abrasive tool comprises a base body and an abrasive; the substrate is prepared by heating and curing polyurethane with spiropyran groups, and the thickness of the substrate is 1 mm; the abrasive is restrained and fixed in the pore canal of the matrix by the azobenzene group in the compound molecule in the matrix; the abrasive is diamond with the average grain diameter of 20 nm; the mass of abrasive fixed per square centimeter of substrate was 1.2 g.
The intelligent organic abrasive tool of this example was prepared according to the method of example 4, which is the method of preparing the intelligent organic abrasive tool.
Example 12
The intelligent organic abrasive tool comprises a base body and an abrasive; the matrix is polyurethane (average polymerization degree n is 9, R is-CH) with a structure shown as formula I3) Heating and curing to obtain the product with a thickness of 1 mm; the abrasive is restrained and fixed in the pore canal of the matrix by the azobenzene group in the compound molecule in the matrix; the abrasive is diamond with the average grain diameter of 80 nm; the mass of abrasive fixed on a cubic centimeter substrate was 1.7 g.
The intelligent organic abrasive tool of this example was prepared according to the method of example 7.
Example 13
The intelligent organic abrasive tool comprises a base body and an abrasive; the matrix is polyurethane (average polymerization degree N is 9, R is-N (CH) with a structure shown as formula I3)2) Heating and curing to obtain the product with a thickness of 1 mm; the abrasive is restrained and fixed in the pore canal of the matrix by the azobenzene group in the compound molecule in the matrix; the abrasive is diamond with the average grain diameter of 30 nm; the mass of abrasive fixed on a cubic centimeter substrate was 0.9 g.
The intelligent organic abrasive tool of this example was prepared according to the method of example 8.
Examples of methods for recovering Intelligent organic abrasive tools
Example 14
The method for recycling the intelligent organic grinding tool comprises the following steps: and (3) placing the intelligent organic grinding tool in deionized water, and irradiating the intelligent organic grinding tool for 1h by using ultraviolet light to enable abrasive particles to escape from the grinding tool. In other embodiments, visible light instead of ultraviolet light may be used to illuminate the smart organic abrasive article.
The intelligent organic grinding tools in the above examples 9 to 13 of the intelligent organic grinding tool can all adopt the recovery method of the intelligent organic grinding tool in this example to recover the abrasive and the matrix in the grinding tool. Wherein the intelligent organic abrasive of example 9 has about 60% recovery of abrasive using the recovery method of example 14; the intelligent organic abrasive of example 11 recovered about 30% of the abrasive using the recovery method of example 14; (recovery rate is the mass of the recovered abrasive x 100%/mass of the abrasive fixed on the substrate during the preparation of the smart organic abrasive).
Claims (12)
1. An organic grinding apparatus of intelligence which characterized in that: comprises a matrix and an abrasive;
the matrix is formed by curing a high-molecular intelligent material serving as a main raw material; at least part of the abrasive is bound and fixed in the pore canal of the matrix by a group which generates structural change after corresponding stimulation is carried out on the compound molecules in the matrix; the polymer intelligent material is selected from one of a light response type polymer intelligent material and a thermal response type polymer intelligent material; the photoresponse type polymer intelligent material is selected from polymer intelligent materials with azobenzene groups and/or spiropyran groups; the corresponding stimulus is illumination with ultraviolet and/or visible light.
2. The intelligent organic abrasive tool of claim 1, wherein: the light-responsive polymer intelligent material is selected from polyurethane with azobenzene groups and/or spiropyran groups.
3. The intelligent organic abrasive tool of claim 2, wherein: the photoresponse type polymer intelligent material is polyurethane with a structure shown as a formula I, wherein the average polymerization degree n is 8-10, R is selected from-H and-CH3、-N(CH3)2One of (1):
4. the intelligent organic abrasive tool of claim 1, wherein: the average grain diameter of the abrasive is 20-80 nm.
5. A method of making an intelligent organic abrasive article according to claim 1, wherein: the method comprises the following steps: immersing the substrate into the suspension of the abrasive material for corresponding stimulation to obtain the abrasive material; the matrix is formed by curing a high-molecular intelligent material serving as a main raw material; the corresponding stimulus is illumination with ultraviolet and/or visible light.
6. The method of making an intelligent organic abrasive tool of claim 5, wherein: the concentration of the abrasive in the suspension is 10-40 g/L.
7. The method of making an intelligent organic abrasive tool of claim 5, wherein: the polymer intelligent material is selected from one of a light response type polymer intelligent material and a thermal response type polymer intelligent material.
8. The method of making an intelligent organic abrasive tool of claim 7, wherein: the photoresponse type polymer intelligent material is selected from polymer intelligent materials with azobenzene groups and/or spiropyran groups.
9. The method of making an intelligent organic abrasive tool of claim 8, wherein: the light-responsive polymer intelligent material is selected from polyurethane with azobenzene groups and/or spiropyran groups.
10. The method of making an intelligent organic abrasive tool of claim 9, wherein: the photoresponse type polymer intelligent material is polyurethane with a structure shown as a formula I, wherein the average polymerization degree n is 8-10, R is selected from-H and-CH3、-N(CH3)2One of (1):
11. the method of making an intelligent organic abrasive tool of claim 5, wherein: the average grain diameter of the abrasive is 20-80 nm.
12. A method of recycling the intelligent organic abrasive tool of claim 1, wherein: the method comprises the following steps: and placing the intelligent organic grinding tool in the blank liquid of the grinding material for corresponding stimulation.
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| US4239501A (en) * | 1978-03-07 | 1980-12-16 | Wirth John C | Method for preserving the grinding characteristics of a grinding tool |
| JP2000117643A (en) * | 1998-10-14 | 2000-04-25 | Olympus Optical Co Ltd | Polishing tool and manufacture thereof |
| JP2003175466A (en) * | 2001-12-13 | 2003-06-24 | Sakura Color Prod Corp | Polishing tool |
| US10005171B2 (en) * | 2013-06-24 | 2018-06-26 | 3M Innovative Properties Company | Abrasive particles, method of making abrasive particles, and abrasive articles |
| CN103801894B (en) * | 2014-02-28 | 2016-03-16 | 淄博福世蓝高分子复合材料技术有限公司 | Adopt method and the device thereof of the spindle nose of polymer composite reparation wearing and tearing |
| CN105837707A (en) * | 2016-04-13 | 2016-08-10 | 贵州省生物研究所 | High-molecular polymer containing spiropyran group and preparation method thereof and application thereof |
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