CN111826108A - Glue coating layer for precisely grinding coated abrasive tool abrasive cloth and preparation method thereof - Google Patents
Glue coating layer for precisely grinding coated abrasive tool abrasive cloth and preparation method thereof Download PDFInfo
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- CN111826108A CN111826108A CN202010827852.3A CN202010827852A CN111826108A CN 111826108 A CN111826108 A CN 111826108A CN 202010827852 A CN202010827852 A CN 202010827852A CN 111826108 A CN111826108 A CN 111826108A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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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
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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
-
- 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
- B24D11/08—Equipment for after-treatment of the coated backings, e.g. for flexing the coating
-
- 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
- B24D3/02—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 bonding agent
- B24D3/20—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 bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
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- 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
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
- B24D3/344—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent the bonding agent being organic
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- 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
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/346—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties utilised during polishing, or grinding operation
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a glue coating layer of abrasive cloth of a precision grinding coated abrasive tool, which comprises the following components in percentage by weight: 80-85% of first gluing layer adhesive, 8-15% of second gluing layer adhesive, 2-5% of thixotropic dispersant, 0.3-0.5% of titanium dioxide and 5-8% of epoxy curing agent. The invention also discloses a preparation method of the glue coating layer of the coated abrasive cloth of the precision grinding coated abrasive tool, which comprises the following steps: preparing a first glue coating layer adhesive; preparing a second glue coating layer adhesive; according to the weight percentage, 80-85% of first gluing layer adhesive, 8-15% of second gluing layer adhesive, 2-5% of thixotropic dispersing agent, 0.3-0.5% of titanium dioxide and 5-8% of epoxy curing agent are prepared into a gluing layer. The preparation method of the glue coating layer can effectively ensure the construction thickness and uniformity of one-time coating, and the prepared glue coating layer has high bonding strength, high waterproof and anti-blocking performance and good heat dissipation performance, reduces the grinding temperature, and effectively improves the material cutting rate and the grinding performance.
Description
Technical Field
The invention relates to the technical field of coated abrasives, in particular to a glue coating layer of abrasive cloth of a precision grinding coated abrasive and a preparation method thereof.
Background
The coated abrasive tool is an abrasive tool which uses a binder to adhere abrasive particles on a flexible base material, and can realize the characteristics of grinding and processing of special-shaped surfaces and curved surfaces due to high efficiency, economy and wide application, the ultraprecise grinding of the coated abrasive tool abrasive cloth requires that the binder and the abrasive material have high bonding strength, water resistance and burn resistance, and can meet the process requirements only by adapting to high-speed heavy loads, however, phenolic resin is generally adopted as an adhesive or auxiliary materials such as fillers, curing agents, accelerators, surfactants and the like are adopted to improve the bonding strength and characteristics, then primer glue is coated on the base material, sand is planted, and the base material is coated with the primer glue and then is dried and cured, the process and the adhesive have low bonding strength, the bonding performance is reduced under the high-speed high-temperature grinding condition, and the abrasive. The requirement of high-speed precision grinding cannot be met.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. In view of the above, the invention needs to provide a glue coating layer of a precise grinding coated abrasive tool abrasive cloth, which effectively ensures the construction thickness and uniformity of one-time coating, has high bonding strength, high water resistance and anti-blocking performance, good heat dissipation performance, reduces the grinding temperature, and effectively improves the material removal rate and the grinding performance, and a preparation method thereof.
The invention provides a glue coating layer of abrasive cloth of a precise grinding coated abrasive tool, which comprises the following components in percentage by weight: 80-85% of first gluing layer adhesive, 8-15% of second gluing layer adhesive, 2-5% of thixotropic dispersant, 0.3-0.5% of titanium dioxide and 5-8% of epoxy curing agent.
According to one embodiment of the invention, said first glue-coating layer adhesive consists of, in weight percent:
epoxy resin: 10-15%, potassium fluoroborate: 70-75%, ethylene glycol diethyl ether: 10 to 15 percent.
According to one embodiment of the invention, said second glue-applied layer adhesive consists of, in weight percent:
ethylene glycol diethyl ether: 95-98%, colorant: 0.3-0.6%, penetrant: 0.5-0.8%, epoxy resin: 2-5%.
According to one embodiment of the present invention, the epoxy value of the epoxy resin is 0.25 to 0.45.
According to one embodiment of the invention, the thixotropic dispersant is fumed silica.
The invention also provides a preparation method of the glue coating layer of the coated abrasive cloth of the precision grinding coated abrasive tool, which comprises the following steps:
s1, preparing a first glue coating adhesive;
s2, preparing a second glue coating adhesive;
s3, preparing 80-85% of the first gluing layer adhesive, 8-15% of the second gluing layer adhesive, 2-5% of a thixotropic dispersing agent, 0.3-0.5% of titanium dioxide and 5-8% of an epoxy curing agent into the gluing layer according to weight percentage.
According to the preparation method of the glue coating layer of the abrasive cloth of the precision grinding coated abrasive tool, in the step S1, the adhesive of the first glue coating layer comprises the following components in percentage by weight: epoxy resin: 10-15%, potassium fluoroborate: 70-75%, ethylene glycol diethyl ether: 10-15%; in the step S2, the second adhesive coating layer adhesive is composed of the following components in percentage by weight: ethylene glycol diethyl ether: 95-98%, colorant: 0.3-0.6%, penetrant: 0.5-0.8%, epoxy resin: 2-5%, wherein the colorant is a blue pigment, and the penetrating agent is fatty acid polyoxyethylene ether.
According to the preparation method of the glue coating layer of the coated abrasive cloth of the precision grinding coated abrasive tool, the preparation process of the first glue coating layer adhesive is as follows: putting potassium fluoborate and ethylene glycol diethyl ether into a stirring container, stirring at normal temperature, then putting into a grinder, grinding until the granularity is below 15 mu m, then transferring into a reaction container, adding epoxy resin with the epoxy value of 0.25-0.45, stirring, heating to 45-50 ℃, stirring for 20-30 min, preparing the potassium fluoborate oily coating modified epoxy resin adhesive, and storing at normal temperature.
According to the preparation method of the glue coating layer of the coated abrasive cloth of the precision grinding coated abrasive tool, the preparation process of the second glue coating layer adhesive is as follows: putting ethylene glycol diethyl ether and fatty acid polyoxyethylene ether into a reaction container, heating to 45-50 ℃, stirring at a stirring speed of 1500r/min, adding epoxy resin at 45-50 ℃, continuously stirring for 20-30 min, finally adding blue pigment, stirring for 20-30 min, and standing at normal temperature.
According to the preparation method of the glue coating layer of the precision grinding coated abrasive tool abrasive cloth, in step S3, the prepared first glue coating layer adhesive and the second glue coating layer adhesive are placed into a mixing barrel, are uniformly stirred at the stirring speed of 1500r/min, are added with a thixotropic dispersing agent and titanium dioxide, are fully stirred at normal temperature for 20-50 min, and are added with an epoxy curing agent to prepare the glue coating layer, and when the viscosity of the glue coating layer is larger, the viscosity is adjusted to 15000cps by using ethylene glycol diethyl ether, wherein the thixotropic dispersing agent is fumed silica.
The invention relates to a glue coating layer of precision grinding coated abrasive tool emery cloth and a preparation method thereof, which is different from the traditional adhesive coating layer on the basis of coating primer adhesive sand planting on a base material of a common process and drying and curing the coating adhesive, in the glue coating layer of the invention, an oily coating is adopted, potassium fluoborate is taken as a filler to modify oily epoxy resin, titanium pigment, thixotropic dispersant and colorant with preset dosage are added, ethylene glycol diethyl ether is taken as an organic solvent medium of the oily coating epoxy resin, the viscosity is adjusted to 15000cps, the glue coating layer prepared by the coating process can effectively ensure the construction thickness and uniformity in the coating process, has high bonding strength, improves the waterproof and anti-clogging performance of the coated abrasive tool, and improves the surface heat dispersion performance of the coated abrasive tool, wherein, metal salt formed by chemical component potassium fluoborate halogen element in the glue coating layer, the self-lubricating effect can reduce the grinding temperature, prevent the workpiece from burning, chemically corrode a processing material by the workpiece, improve the material removal rate, effectively avoid the workpiece from burning, realize high-efficiency strong grinding of the material difficult to process, and greatly increase the bonding strength and the grinding performance of a bonding agent.
Drawings
FIG. 1 is a flow chart of the steps of a method of making a coated layer of precision grinding coated abrasive cloth according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in figure 1, the glue coating layer of the coated abrasive cloth for precision grinding comprises the following components in percentage by weight: 80-85% of a first glue coating layer adhesive, 8-15% of a second glue coating layer adhesive, 2-5% of a thixotropic dispersant, 0.3-0.5% of titanium dioxide and 5-8% of an epoxy curing agent, wherein the first glue coating layer adhesive comprises the following components in percentage by weight: epoxy resin: 10-15%, potassium fluoroborate: 70-75%, ethylene glycol diethyl ether: 10-15%; the second glue coating layer adhesive comprises the following components in percentage by weight: ethylene glycol diethyl ether: 95-98%, colorant: 0.3-0.6%, penetrant: 0.5-0.8%, epoxy resin: 2-5%, it is understood that the epoxy value of the epoxy resin used in the first glue layer adhesive is 0.25-0.45.
The invention relates to a glue coating layer of precision grinding coated abrasive tool emery cloth and a preparation method thereof, which is different from the traditional adhesive coating layer on the basis of coating primer adhesive sand planting on a base material of a common process and drying and curing the coating adhesive, in the glue coating layer of the invention, an oily coating is adopted, potassium fluoborate is taken as a filler to modify oily epoxy resin, titanium pigment, thixotropic dispersant and colorant with preset dosage are added, ethylene glycol diethyl ether is taken as an organic solvent medium of the oily coating epoxy resin, the viscosity is adjusted to 15000cps, the glue coating layer prepared by the coating process can effectively ensure the construction thickness and uniformity in the coating process, has high bonding strength, improves the waterproof and anti-clogging performance of the coated abrasive tool, and improves the surface heat dispersion performance of the coated abrasive tool, wherein, metal salt formed by chemical component potassium fluoborate halogen element in the glue coating layer, the self-lubricating effect can reduce the grinding temperature, prevent the workpiece from burning, chemically corrode a processing material by the workpiece, improve the material removal rate, effectively avoid the workpiece from burning, realize high-efficiency strong grinding of the material difficult to process, and greatly increase the bonding strength and the grinding performance of a bonding agent.
As shown in fig. 1, the thixotropic dispersant is fumed silica, and it should be understood that fumed silica is added to the adhesive coating layer, which can form hydrogen bonds or substances with large specific surface area with the polymer, fumed silica or other types of thixotropic dispersants are added to the epoxy resin, which can make the epoxy resin adhesive solution have higher consistency in a static state, become a low-viscosity fluid substance under the action of external force, become thin under stress, and become thick when standing, and after the thixotropic dispersant is added to the adhesive coating layer, the adhesive solution is sheared when being stirred and coated, becomes thin, and becomes thick again after the operation is finished, so that the adhesive solution does not flow, wherein the thixotropic dispersant plays a role in forming hydrogen bonds. When the surface untreated fumed silica aggregate contains a plurality of fumed silica aggregates, wherein one is isolated undisturbed freedom, and the other is continuous bonding hydrogen bonds which form hydrogen bonds with each other, and the fumed silica aggregates are bonded in an oily system and are extremely easy to form a three-dimensional network structure, the structure is damaged under the influence of mechanical force to reduce the viscosity, and a liquid phase system recovers good fluidity; the three-dimensional structure can restore the viscosity to rise by itself after the shearing force is eliminated. In completely non-polar liquid, the viscosity recovery time only needs a fraction of a second, so that the liquid phase system can be effectively ensured to have good fluidity under certain construction shearing force, the coating glue of the epoxy resin ultra-precision grinding coated abrasive tool abrasive cloth is a fumed silica poly-thixotropic dispersing agent, the construction thickness is extremely uniform, and the downstream phenomenon can not occur on the basis of ensuring the coating thickness, thereby effectively ensuring the construction thickness and uniformity in the one-time coating process.
As shown in fig. 1, a method for preparing a glue coating layer of a coated abrasive cloth for precision grinding comprises the following steps:
s100, preparing a first gluing layer adhesive,
the first glue coating adhesive comprises the following components in percentage by weight: epoxy resin: 10-15%, potassium fluoroborate: 70-75%, ethylene glycol diethyl ether: 10-15%, and the preparation process comprises the following steps:
putting potassium fluoborate and ethylene glycol diethyl ether into a stirring container, stirring at normal temperature, then putting into a grinder, grinding until the granularity is below 15 mu m, then transferring into a reaction container, adding epoxy resin with the epoxy value of 0.25-0.45, stirring, heating to 45-50 ℃, stirring for 20-30 min, preparing a first glue coating layer adhesive, and storing at normal temperature;
s200, preparing a second glue coating layer adhesive,
the second glue coating adhesive comprises the following components in percentage by weight: ethylene glycol diethyl ether: 95-98%, colorant: 0.3-0.6%, penetrant: 0.5-0.8%, epoxy resin: 2-5%, the coloring agent is a blue pigment, the penetrating agent is fatty acid polyoxyethylene ether, and the preparation process is as follows:
putting ethylene glycol diethyl ether and fatty acid polyoxyethylene ether into a reaction container, heating to 45-50 ℃, stirring at a stirring speed of 1500r/min, adding epoxy resin at 45-50 ℃, continuously stirring for 20-30 min, adding blue pigment, stirring for 20-30 min to prepare a second glue coating layer adhesive, and standing at normal temperature;
s300, preparing 80-85% of first gluing layer adhesive, 8-15% of second gluing layer adhesive, 2-5% of thixotropic dispersing agent, 0.3-0.5% of titanium dioxide and 5-8% of epoxy curing agent into a gluing layer according to weight percentage, wherein the preparation process is as follows: and (3) putting the prepared first glue coating layer adhesive and the prepared second glue coating layer adhesive into a mixing cylinder, uniformly stirring at a stirring speed of 1500r/min, then adding a thixotropic dispersant and titanium dioxide, fully stirring at normal temperature for 20-50 min, finally adding an epoxy curing agent to prepare a glue coating layer, and when the viscosity of the glue coating layer is higher, adjusting the viscosity to 15000cps by using ethylene glycol diethyl ether, wherein the thixotropic dispersant is fumed silica.
The following is a specific example of the coated layer of the coated abrasive cloth of the precision grinding coated abrasive tool and the preparation method thereof of the present invention.
Example one
The glue coating layer of the coated abrasive tool comprises the following components in percentage by weight:
80.53% of first gluing layer adhesive, 9.99% of second gluing layer adhesive, 3.06% of fumed silica, 0.41% of titanium dioxide, 6.01% of epoxy curing agent, and the total weight is as follows: 100 percent of the total weight of the mixture,
the adhesive for the first adhesive coating layer comprises the following components in percentage by weight: 74.24 percent of potassium fluoborate, 13.38 percent of ethylene glycol diethyl ether and 12.38 percent of epoxy resin, the total amount is 100.00 percent;
the adhesive component formula of the second adhesive coating layer is as follows: 0.52 percent of blue pigment, 95.98 percent of ethylene glycol diethyl ether, 0.70 percent of fatty acid polyoxyethylene ether and 2.80 percent of epoxy resin, and the total content is 100.00 percent.
The preparation process of the first gluing layer adhesive comprises the following steps: the above formula is added at 200m2Calculating that 76.47Kg of potassium fluoborate as a filler and 13.78Kg of ethylene glycol diethyl ether are stirred at normal temperature in advance, ground by a three-roll grinder to the particle size of below 15 mu m, transferred to a reaction container, added with 12.75Kg of epoxy resin with the epoxy value of 0.25-0.45 and stirred, heated to 45-50 ℃ and stirred for 20-30 min, and the first glue coating layer adhesive is prepared and stored at normal temperature;
the preparation process of the second glue coating layer adhesive comprises the following steps: putting 98.86Kg of ethylene glycol diethyl ether and 0.72Kg of fatty alcohol-polyoxyethylene ether into a reaction vessel, heating to 45-50 ℃, stirring at the stirring speed of 1500r/min, heating to 45-50 ℃, then putting 2.88Kg of epoxy resin, and continuously stirring for 20-30 min; finally, 0.54Kg of blue pigment is added and stirred for 20-30 min; preparing a second gluing layer adhesive and placing at normal temperature;
the preparation process of the glue coating layer is as follows: taking the above formula group of 200m282.95Kg of first glue coating adhesive and 10.29Kg of second glue coating adhesive are calculated, the mixed first glue coating adhesive and second glue coating adhesive are put into a mixing barrel after being well mixed, the mixture is uniformly stirred at the stirring speed of 1500r/min, 3.15Kg of fumed silica and 0.42Kg of titanium dioxide are added, the mixture is fully stirred for about 30 minutes at normal temperature, finally 6.19Kg of epoxy curing agent is added, if the viscosity is larger, the viscosity can be adjusted to 15000cps by ethylene glycol diethyl ether, and the glue coating layer of the modified epoxy resin is prepared;
guiding the prepared glue coating layer into a glue coating machine on a suspension type production line, coating the glue coating layer on the surface layer of the abrasive cloth subjected to primer coating, sand planting, glue coating and pre-drying, coating the glue coating layer on the abrasive cloth by using 515 g/square meter, and processing by the speed of the machine: 15m/min, temperature: 100 ℃ -120 ℃ -130 ℃, pre-drying and curing, preparing 12 groups of test abrasive belts with the specification of 2000mm x 70mm, carrying out grinding test with each group of grinding time of 2min, wherein the test object is a stainless steel cylindrical rod with the diameter of 2.54cm and the length of 30cm, and measuring average grinding amount, desanding amount and grinding ratio, compared with the abrasive cloth grinding efficiency which is not implemented by the invention, the measurement result is that the grinding amount is increased by 35%, the desanding amount is reduced by 19.5%, and the grinding ratio is increased by 21.6%.
Example two
The glue coating layer of the coated abrasive tool comprises the following components in percentage by weight:
81% of first gluing layer adhesive, 9.05% of second gluing layer adhesive, 3.10% of fumed silica, 0.35% of titanium dioxide, 6.50% of epoxy curing agent, and the total weight is as follows: 100 percent of the total weight of the mixture,
the adhesive for the first adhesive coating layer comprises the following components in percentage by weight: 75% of potassium fluoborate, 13% of ethylene glycol diethyl ether and 12% of epoxy resin, the total amount is 100.00%;
the adhesive component formula of the second adhesive coating layer is as follows: 0.6 percent of blue pigment, 95.80 percent of ethylene glycol diethyl ether, 0.6 percent of fatty acid polyoxyethylene ether and 3.0 percent of epoxy resin, the total content is 100.00 percent.
The preparation process of the first gluing layer adhesive comprises the following steps: the above formula is added at 200m2Calculating that 77.25Kg of potassium fluoborate as a filler and 13.39Kg of ethylene glycol diethyl ether are stirred at normal temperature in advance, ground by a three-roll grinder to the particle size of below 15 mu m, transferred to a reaction container, added with 12.36Kg of epoxy resin with the epoxy value of 0.25-0.45 and stirred, heated to 45-50 ℃ and stirred for 20-30 min, and the first glue coating layer adhesive is prepared and stored at normal temperature;
the preparation process of the second glue coating layer adhesive comprises the following steps: in a reaction vessel, 98.67Kg of ethylene glycol diethyl ether and 0.62Kg of fatty alcohol-polyoxyethylene ether are firstly added, the mixture is heated to 45-50 ℃ and stirred at the stirring speed of 1500r/min, the mixture is heated to 45-50 ℃, then 3.09Kg of epoxy resin is added, and the mixture is continuously stirred for 20-30 min; finally, 0.62Kg of blue pigment is added and stirred for 20-30 min; preparing a second gluing layer adhesive and placing at normal temperature;
glue spreadingThe layer was prepared as follows: taking the above formula group of 200m283.43Kg of first glue coating adhesive and 9.32Kg of second glue coating adhesive are calculated, the mixed first glue coating adhesive and second glue coating adhesive are put into a mixing barrel after being well mixed, the mixture is uniformly stirred at the stirring speed of 1500r/min, 3.19Kg of fumed silica and 0.36Kg of titanium dioxide are added, the mixture is fully stirred for about 30 minutes at normal temperature, finally 6.7Kg of epoxy curing agent is added, if the viscosity is larger, the viscosity can be adjusted to 15000cps by ethylene glycol diethyl ether, and the glue coating layer of the modified epoxy resin is prepared;
guiding the prepared glue coating layer into a glue coating machine on a suspension type production line, coating the glue coating layer on the surface layer of the abrasive cloth subjected to primer coating, sand planting, glue coating and pre-drying, coating the glue coating layer on the abrasive cloth by using 515 g/square meter, and processing by the speed of the machine: 15m/min, temperature: 100 ℃ -120 ℃ -130 ℃, pre-drying and curing, preparing 12 groups of test abrasive belts with the specification of 2000mm x 70mm, carrying out grinding test with each group of grinding time of 2min, wherein the test object is a stainless steel cylindrical rod with the diameter of 2.54cm and the length of 30cm, and measuring average grinding amount, desanding amount and grinding ratio, compared with the abrasive cloth grinding efficiency which is not implemented, the measurement result is that the grinding amount is increased by 38.5%, the desanding amount is reduced by 16.5%, and the grinding ratio is increased by 24.3%.
EXAMPLE III
The glue coating layer of the coated abrasive tool comprises the following components in percentage by weight:
81.30% of first gluing layer adhesive, 9.24% of second gluing layer adhesive, 2.95% of fumed silica, 0.36% of titanium dioxide, 6.15% of epoxy curing agent, and the total weight is as follows: 100 percent of the total weight of the mixture,
the adhesive for the first adhesive coating layer comprises the following components in percentage by weight: 73.50 percent of potassium fluoborate, 13.50 percent of ethylene glycol diethyl ether and 13 percent of epoxy resin, the total amount is 100.00 percent;
the adhesive component formula of the second adhesive coating layer is as follows: 0.55 percent of blue pigment, 96.10 percent of ethylene glycol diethyl ether, 0.50 percent of fatty acid polyoxyethylene ether and 2.85 percent of epoxy resin, and the total content is 100.00 percent.
The preparation process of the first gluing layer adhesive comprises the following steps: the above formula is added at 200m2Calculated, the fillers of 75.71Kg of potassium fluoborate and ethanediol13.91Kg of alcohol diethyl ether is stirred at normal temperature in advance, ground by a three-roll grinder to the particle size of below 15 μm, transferred to a reaction container, added with 13.39Kg of epoxy resin with the epoxy value of 0.25-0.45 and stirred, heated to 45-50 ℃ and stirred for 20-30 min again to prepare the first glue coating layer adhesive which is preserved at normal temperature;
the preparation process of the second glue coating layer adhesive comprises the following steps: putting 98.98Kg of ethylene glycol diethyl ether and 0.52Kg of fatty alcohol-polyoxyethylene ether into a reaction vessel, heating to 45-50 ℃, stirring at the stirring speed of 1500r/min, heating to 45-50 ℃, then putting 2.94Kg of epoxy resin, and continuously stirring for 20-30 min; finally, 0.57Kg of blue pigment is added and stirred for 20-30 min; preparing a second gluing layer adhesive and placing at normal temperature;
the preparation process of the glue coating layer is as follows: taking the above formula group of 200m283.74Kg of first glue coating adhesive and 9.52Kg of second glue coating adhesive are calculated, the mixed first glue coating adhesive and second glue coating adhesive are put into a mixing barrel after being taken, the mixture is uniformly stirred at the stirring speed of 1500r/min, then 3.04Kg of fumed silica and 0.37Kg of titanium dioxide are added, the mixture is fully stirred for about 30 minutes at normal temperature, finally 6.33Kg of epoxy curing agent is added, if the viscosity is larger, the viscosity can be adjusted to 15000cps by ethylene glycol diethyl ether, and the glue coating layer of the modified epoxy resin is prepared;
guiding the prepared glue coating layer into a glue coating machine on a suspension type production line, coating the glue coating layer on the surface layer of the abrasive cloth subjected to primer coating, sand planting, glue coating and pre-drying, coating the glue coating layer on the abrasive cloth by using 515 g/square meter, and processing by the speed of the machine: 15m/min, temperature: 100 ℃ -120 ℃ -130 ℃, pre-drying and curing, preparing 12 groups of test abrasive belts with the specification of 2000mm x 70mm, carrying out grinding test with each group of grinding time of 2min, wherein the test object is a stainless steel cylindrical rod with the diameter of 2.54cm and the length of 30cm, and measuring average grinding amount, desanding amount and grinding ratio, compared with the abrasive cloth grinding efficiency which is not implemented, the measurement result is that the grinding amount is increased by 39.5%, the desanding amount is reduced by 22.3%, and the grinding ratio is increased by 26.1%.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The glue coating layer of the abrasive cloth of the precision grinding coated abrasive tool is characterized by comprising the following components in percentage by weight: 80-85% of first gluing layer adhesive, 8-15% of second gluing layer adhesive, 2-5% of thixotropic dispersant, 0.3-0.5% of titanium dioxide and 5-8% of epoxy curing agent.
2. The glue layer of the coated abrasive cloth of the precision grinding of claim 1, wherein the adhesive of the first glue layer comprises the following components in percentage by weight:
epoxy resin: 10-15%, potassium fluoroborate: 70-75%, ethylene glycol diethyl ether: 10 to 15 percent.
3. The glue layer of the coated abrasive cloth of the precision grinding of claim 1, wherein the adhesive of the second glue layer comprises the following components in percentage by weight:
ethylene glycol diethyl ether: 95-98%, colorant: 0.3-0.6%, penetrant: 0.5-0.8%, epoxy resin: 2-5%.
4. The coated layer of the coated abrasive cloth for precision grinding of claim 2, wherein the epoxy resin has an epoxy value of 0.25 to 0.45.
5. The coated layer of a coated abrasive cloth for precision grinding of claim 1 wherein the thixotropic dispersant is fumed silica.
6. A preparation method of a glue coating layer of precision grinding coated abrasive tool abrasive cloth is characterized by comprising the following steps:
s1, preparing a first glue coating adhesive;
s2, preparing a second glue coating adhesive;
s3, preparing 80-85% of the first gluing layer adhesive, 8-15% of the second gluing layer adhesive, 2-5% of a thixotropic dispersing agent, 0.3-0.5% of titanium dioxide and 5-8% of an epoxy curing agent into the gluing layer according to weight percentage.
7. The method for preparing the glue coating layer of the coated abrasive cloth of the precision grinding tool according to the claim 6, wherein the adhesive of the first glue coating layer in the step S1 comprises the following components in percentage by weight: epoxy resin: 10-15%, potassium fluoroborate: 70-75%, ethylene glycol diethyl ether: 10-15%; in the step S2, the second adhesive coating layer adhesive is composed of the following components in percentage by weight: ethylene glycol diethyl ether: 95-98%, colorant: 0.3-0.6%, penetrant: 0.5-0.8%, epoxy resin: 2-5%, wherein the colorant is a blue pigment, and the penetrating agent is fatty acid polyoxyethylene ether.
8. The method for preparing the glue coating layer of the coated abrasive cloth of the precision grinding tool according to claim 7, wherein the first glue coating layer adhesive is prepared by the following steps: putting potassium fluoborate and ethylene glycol diethyl ether into a stirring container, stirring at normal temperature, then putting into a grinder, grinding until the granularity is below 15 mu m, then transferring into a reaction container, adding epoxy resin with the epoxy value of 0.25-0.45, stirring, heating to 45-50 ℃, stirring for 20-30 min, preparing the potassium fluoborate oily coating modified epoxy resin adhesive, and storing at normal temperature.
9. The method for preparing the glue coating layer of the coated abrasive cloth of the precision grinding tool according to claim 7, wherein the second glue coating layer adhesive is prepared by the following steps: putting ethylene glycol diethyl ether and fatty acid polyoxyethylene ether into a reaction container, heating to 45-50 ℃, stirring at a stirring speed of 1500r/min, adding epoxy resin at 45-50 ℃, continuously stirring for 20-30 min, finally adding blue pigment, stirring for 20-30 min, and standing at normal temperature.
10. The method for preparing the glue coating layer of the abrasive cloth of the precision grinding coated abrasive tool according to claim 6, wherein in step S3, the prepared first glue coating layer adhesive and the second glue coating layer adhesive are put into a mixing barrel, uniformly stirred at a stirring speed of 1500r/min, then added with thixotropic dispersant and titanium dioxide, fully stirred at normal temperature for 20-50 min, finally added with epoxy curing agent to prepare the glue coating layer, and when the viscosity of the glue coating layer is larger, the viscosity is adjusted to 15000cps by using ethylene glycol diethyl ether, wherein the thixotropic dispersant is fumed silica.
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| CN103692365A (en) * | 2013-10-09 | 2014-04-02 | 江苏锋芒复合材料科技集团有限公司 | Base cloth back down-coated grinding tool product and manufacturing method thereof |
| CN110258118A (en) * | 2019-07-12 | 2019-09-20 | 开封大学 | Water-soluble heat-resistance type carbon fiber cementing agent and preparation method thereof |
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| CN103692365A (en) * | 2013-10-09 | 2014-04-02 | 江苏锋芒复合材料科技集团有限公司 | Base cloth back down-coated grinding tool product and manufacturing method thereof |
| CN110258118A (en) * | 2019-07-12 | 2019-09-20 | 开封大学 | Water-soluble heat-resistance type carbon fiber cementing agent and preparation method thereof |
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