CN108296995B - Diamond grinding disc and preparation method thereof - Google Patents

Diamond grinding disc and preparation method thereof Download PDF

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Publication number
CN108296995B
CN108296995B CN201810113753.1A CN201810113753A CN108296995B CN 108296995 B CN108296995 B CN 108296995B CN 201810113753 A CN201810113753 A CN 201810113753A CN 108296995 B CN108296995 B CN 108296995B
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Prior art keywords
diamond
grinding
curing
bonding agent
plate
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CN201810113753.1A
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CN108296995A (en
Inventor
邹林汇
吴周强
项婷芳
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Hubei Little Ant Diamond Tool Co Ltd
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Hubei Little Ant Diamond Tool Co Ltd
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Priority to CN201810113753.1A priority Critical patent/CN108296995B/en
Publication of CN108296995A publication Critical patent/CN108296995A/en
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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
    • B24D3/02—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
    • B24D3/32—Resins or natural or synthetic macromolecular compounds for porous or cellular structure
    • 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
    • B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • 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
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter

Abstract

The invention provides a diamond abrasive disc which is prepared by sequentially mixing, die assembling, curing and demolding the following raw materials in percentage by mass: 10-80% of a bonding agent, 5-50% of diamond and 5-40% of a filling auxiliary material. According to the invention, 10-80% of bonding agent, 5-50% of diamond and 5-40% of filling auxiliary material by mass are used as raw material mixing materials, the strength and compactness of the grinding plate are improved by controlling the proportion of each component, the smoothness of the surface of the grinding plate is improved by the process of firstly curing and then demoulding, the grinding plate can be used for dry grinding under the condition of improving the strength and smoothness of the grinding plate, the processed surface is free of burn, burning and dyeing, and the glossiness is high. Experimental results show that the diamond abrasive disc provided by the invention can be used for dry grinding of marble beige materials, the phenomena of plate dyeing and plate burning do not occur on the surface of a processed workpiece, and the glossiness measured by a photometer can reach 100 degrees.

Description

Diamond grinding disc and preparation method thereof
Technical Field
The invention relates to the technical field of grinding processing, in particular to a diamond grinding disc and a preparation method thereof.
Background
Non-metallic materials are increasingly used in production and life, from cement floors to granite, marble, and ceramic floors, glass is widely used in photovoltaic and mobile phone panels, and sapphire mobile phone panels are in existence. The requirements on the processing quality in some fields are higher and higher, and some fields are limited by materials and environments, the cooling liquid is not suitable for cooling during processing, and the processing method of dry grinding and dry polishing must be adopted to achieve the required surface processing quality. However, another problem arises in that grinding without cooling of the coolant tends to increase the temperature of the working surface to a great extent, which not only does the dry grinding plate not withstand and burn, but also burns the surface of the workpiece to be worked. With the development of the building decoration market industry, the requirements on processed objects are higher and higher, for example, the glossiness needs to reach 90-110 degrees, or the conventional artificial marble in the market is common, wherein the change of quartz stone and resin components puts higher requirements on heat resistance and heat dissipation in processing, and the conventional common dry grinding plate is difficult to meet the requirements.
Two kinds of diamond dry grinding plates disclosed by two utility model patents with publication numbers of CN201807975U and CN201799940U only improve the heat dissipation of the dry grinding plates and improve the heat resistance of the dry grinding plates. The invention patent with the publication number of CN101722478A discloses a diamond dry grinding plate produced by a mold closing method, and the heat resistance of the diamond dry grinding plate is improved. The invention patent with the publication number of CN104816257A discloses a diamond dry grinding plate produced by a screen printing type pouring method, and the heat resistance and the use sharpness of the diamond dry grinding plate are improved.
In summary, the current diamond abrasive disc for dry grinding is limited to improving the heat resistance of the abrasive disc, and cannot avoid burning, burning and dyeing of the processed surface during processing, so that the glossiness of the surface of a workpiece cannot be ensured.
Disclosure of Invention
The invention aims to provide a diamond grinding disc and a preparation method thereof. The diamond abrasive disc provided by the invention can be used for dry grinding, and the processed surface has no burn, burning plate and dyeing plate and has high glossiness.
The invention provides a diamond abrasive disc which is prepared by sequentially mixing, die assembling, curing and demolding the following raw materials in percentage by mass:
10 to 80 percent of binder
5 to 50 percent of diamond
5-40% of filling auxiliary materials.
Preferably, the raw materials comprise 30-70% of a bonding agent, 10-40% of diamond and 10-30% of a filling auxiliary material.
Preferably, the raw materials comprise 40-60% of a bonding agent, 20-35% of diamond and 15-25% of a filling auxiliary material.
Preferably, the bonding agent includes one or more of polyolefin plastic, resin material and rubber material.
Preferably, the polyolefin plastic comprises one or more of polyethylene, polypropylene, polystyrene, polymethyl methacrylate, polyvinyl chloride, nylon, polycarbonate, polyurethane and polytetrafluoroethylene.
Preferably, the rubber material comprises one or more of butyl rubber, butadiene rubber, chloroprene rubber, acrylate rubber, urethane rubber, silicone rubber and fluororubber.
Preferably, the diamond has a grain size of 3000 mesh or more.
Preferably, the filler comprises one or more of aluminum oxide, zinc oxide, strontium oxide, chromium oxide and silicon carbide.
The invention also provides a preparation method of the diamond grinding disc in the technical scheme, which comprises the following steps:
(1) mixing the bonding agent, the diamond and the filling auxiliary material to obtain a mixed material;
(2) and (2) closing the die and solidifying the mixed material obtained in the step (1), and then demolding to obtain the diamond abrasive disc.
Preferably, the curing temperature in the step (2) is 0-200 ℃, and the curing time is 0.5-12 h.
The invention provides a diamond abrasive disc which is prepared by sequentially mixing, die assembling, curing and demolding the following raw materials in percentage by mass: 10-80% of a bonding agent, 5-50% of diamond and 5-40% of a filling auxiliary material. According to the invention, 10-80% of bonding agent, 5-50% of diamond and 5-40% of filling auxiliary material by mass are used as raw material mixing materials, the strength and compactness of the grinding plate are improved by controlling the proportion of each component, the smoothness of the surface of the grinding plate is further improved by the process of firstly curing and then demoulding, the grinding plate can be used for dry grinding under the condition of improving the strength and smoothness of the grinding plate, the processed surface is free of burn, burning and dyeing, and the glossiness is high. Experimental results show that the diamond abrasive disc provided by the invention can be used for dry grinding of marble beige materials, the phenomena of plate dyeing and plate burning do not occur on the surface of a processed workpiece, and the glossiness measured by a photometer can reach 100 degrees.
Detailed Description
The invention provides a diamond abrasive disc which is prepared by sequentially mixing, die assembling, curing and demolding the following raw materials in percentage by mass: 10-80% of a bonding agent, 5-50% of diamond and 5-40% of a filling auxiliary material.
In the invention, the raw material for preparing the diamond abrasive disc comprises 10-80% by mass of a bonding agent, preferably 30-70%, and more preferably 40-60%. In the present invention, the binder preferably includes one or more of polyolefin-based plastics, resin materials, and rubber materials. In the present invention, the polyolefin plastic preferably includes one or more of polyethylene, polypropylene, polystyrene, polymethyl methacrylate, polyvinyl chloride, nylon, polycarbonate, polyurethane, and polytetrafluoroethylene. In the present invention, the resin material preferably includes one or more of epoxy resin, phenol resin, polyimide, and melamine formaldehyde resin. In the present invention, the rubber material preferably includes one or more of butyl rubber, cis-butadiene rubber, chloroprene rubber, acrylate rubber, urethane rubber, silicone rubber, and fluororubber.
In the present invention, the binder preferably includes polyolefin plastic and resin material. In the invention, the mass ratio of the polyolefin plastic to the resin material is preferably 1 (0.8-1.5), and more preferably 1: 1. In the present invention, the ratio of the polyolefin-based plastic to the resin material in the above range can further improve the strength of the binder; the bond is most strong to diamond and holds more than a bond using one of the components alone.
The source of the binder is not particularly limited in the present invention, and commercially available products known to those skilled in the art may be used.
In the invention, the raw material for preparing the diamond abrasive disc comprises 5-50% by mass of diamond, preferably 10-40%, and more preferably 20-35%. In the present invention, the diamond preferably has a particle size of 3000 mesh or more. In the present invention, the diamond preferably comprises diamond particles conforming to the list in GB/T6405-94: the diamond with the granularity required by RVD, MBD and SCD meets the diamond with the granularity required in GB/T6406-. In the present invention, the diamond is preferably a high-grade diamond.
In the present invention, the diamond is preferably used in stages from coarse to fine, according to the final desired finish of the surface to be machined; that is, the powder is used from coarse to fine, such as 3000-4000-5000-8000-10000.
In the invention, the raw materials for preparing the diamond abrasive disc comprise 5-40% of filling materials by mass, preferably 10-30% of filling materials by mass, and more preferably 15-25% of filling materials by mass. In the present invention, the filler preferably includes one or more of aluminum oxide, zinc oxide, strontium oxide, chromium oxide, and silicon carbide. In the invention, the granularity of the filling auxiliary material is preferably 1500-3000 meshes, and more preferably 2000-2500 meshes. The source of the filler is not particularly limited in the present invention, and commercially available products known to those skilled in the art may be used.
In the invention, the filler is preferably alumina and silicon carbide; the mass ratio of the alumina to the silicon carbide is preferably (0.8-1.2): 1, and more preferably 1: 1. In the invention, when the filling auxiliary materials adopt the alumina and the silicon carbide in the proportion, the compactness of the diamond abrasive disc can be further improved.
The diamond abrasive disc has no special limitation on the size, and the thickness of the product can be increased according to the deepening of the depth of the used abrasive tool, so that the service life of the product is prolonged, namely the durability of the product is improved.
The diamond grinding disc has no special limitation on the appearance, can be designed into different shapes according to the use requirement, and meets the market requirement, such as a round shape or an N-edge type (N is an integer more than 2).
According to the diamond grinding disc, the quality contents of the bonding agent, the diamond and the filling auxiliary material are controlled, so that the diamond grinding disc has good strength and compactness, and the surface smoothness of a processed workpiece is improved; the strength and the compactness of the diamond grinding disc and the smoothness of the surface of a processed workpiece are further improved by further limiting the type and the proportion of the bonding agent and the type and the proportion of the filling auxiliary material.
The invention also provides a preparation method of the diamond grinding disc in the technical scheme, which comprises the following steps:
(1) mixing the bonding agent, the diamond and the filling auxiliary material to obtain a mixed material;
(2) and (2) closing the die and solidifying the mixed material obtained in the step (1), and then demolding to obtain the diamond abrasive disc.
The invention mixes the bonding agent, the diamond and the filling auxiliary material to obtain the mixed material. The operation of mixing the bonding agent, the diamond and the filler is not particularly limited, and the technical scheme for preparing the mixed material, which is well known by the technical personnel in the field, is adopted. In the present invention, the mixing is preferably performed under stirring conditions; the stirring speed is preferably 100-200 r/min, and more preferably 150 r/min; the stirring time is preferably 5-30 min, and more preferably 10-20 min.
After the mixed material is obtained, the mixed material is subjected to mold closing and curing, and then demolding is carried out, so that the diamond abrasive disc is obtained. The operation of the mold clamping is not particularly limited in the invention, and the technical scheme of mold clamping known to those skilled in the art can be adopted. In the present invention, the closing the mold preferably includes filling the mixture into the mold and then leveling the mixture.
In the invention, the curing temperature is preferably 0-200 ℃, more preferably 20-180 ℃, and most preferably 50-100 ℃; the curing time is preferably 0.5-12 h, more preferably 1-10 h, and most preferably 3-7 h.
The operation of the demolding is not particularly limited in the present invention, and the demolding technical scheme known to those skilled in the art can be adopted. According to the invention, the process of firstly curing and then demoulding can ensure that the obtained diamond grinding disc has better appearance, and the grinding strength and the glossiness of the grinding disc are further improved.
After demolding is finished, the demolded product is preferably subjected to glue brushing, baking and trimming in sequence to obtain the diamond grinding disc with the required size. The operation of brushing glue, baking and trimming is not particularly limited, and the technical scheme of brushing glue, baking and trimming, which is well known by the technical personnel in the field, can be adopted.
In the invention, the glue of the brushing glue is preferably AB glue. In the invention, the baking temperature is preferably 80-100 ℃, and more preferably 90 ℃; the baking time is preferably 4-12 hours, and more preferably 6-10 hours.
After trimming is completed, the present invention preferably prints and packages the trimmed product to obtain a diamond abrasive sheet.
In order to further illustrate the present invention, the following will describe in detail the diamond segments and the method of making the same in connection with the examples, which should not be construed as limiting the scope of the invention.
Example 1:
raw materials (mass):
binding agent: 10% of polycarbonate and 5% of phenolic resin
Diamond: 50 percent and the granularity of 3000 meshes
Filling auxiliary materials: 40% of alumina and 20% of silicon carbide
The preparation method comprises the following steps:
mixing materials: mixing the raw materials at the room temperature of 20 ℃ and the speed of 150r/min for 30min by a stirrer, and discharging for later use after complete mixing.
Die assembly: and discharging, filling in a mold and leveling after uniformly mixing.
And (3) curing: in the device after the mold closing, the mold dies containing the filler are put into an oven to be baked at the temperature of 40 ℃ for 100 min.
Demolding: after the drying and curing are completed, the semi-finished product after curing can fall off by utilizing the self gravity and shaking slightly.
Brushing glue: and the semi-finished product is adhered to the nylon fastening tape on the back of the super abrasive disc through AB glue at room temperature of 20 ℃.
And (3) curing: and (4) putting the semi-finished product and the nylon fastening tape which are stuck together into an oven to be baked for 3 hours at the temperature of 100 ℃.
Trimming: the redundant parts around are trimmed by simple machines such as scissors, a punching knife, a punching machine and the like, the complete round appearance is kept, and the common finished products with the diameters of 80mm, 100mm, 125mm, 150mm and 180mm are obtained.
The grinding sheet 1 prepared in the embodiment is used for grinding the marble beige material, the surface of a processed workpiece has no phenomenon of plate dyeing and plate burning, and the glossiness can reach 100 degrees by using a photometer for measuring.
Example 2:
raw materials (mass):
binding agent: 20% of polycarbonate and 10% of phenolic resin
Diamond: 40% and 3000 mesh granularity
Filling auxiliary materials: 40% of alumina and 20% of silicon carbide
The preparation method comprises the following steps:
mixing materials: mixing the raw materials at the room temperature of 20 ℃ and the speed of 150r/min for 30min by a stirrer, and discharging for later use after complete mixing.
Die assembly: and discharging, filling in a mold and leveling after uniformly mixing.
And (3) curing: in the device after the mold closing, the mold dies containing the filler are put into an oven to be baked at the temperature of 40 ℃ for 100 min.
Demolding: after the drying and curing are completed, the semi-finished product after curing can fall off by utilizing the self gravity and shaking slightly.
Brushing glue: and the semi-finished product is adhered to the nylon fastening tape on the back of the super abrasive disc through AB glue at room temperature of 20 ℃.
And (3) curing: and (4) putting the semi-finished product and the nylon fastening tape which are stuck together into an oven to be baked for 3 hours at the temperature of 100 ℃.
Trimming: the redundant parts around are trimmed by simple machines such as scissors, a punching knife, a punching machine and the like, the complete round appearance is kept, and the common finished products with the diameters of 80mm, 100mm, 125mm, 150mm and 180mm are obtained.
The grinding sheet 2 prepared in the embodiment is used for grinding the marble beige material, the surface of a processed workpiece has no phenomenon of plate dyeing and plate burning, and the glossiness can reach 95 degrees by using a photometer to measure.
Example 3:
raw materials (mass):
binding agent: 40% of polycarbonate and 20% of phenolic resin
Diamond: 20 percent and the granularity of 3000 meshes
Filling auxiliary materials: 40% of alumina and 20% of silicon carbide
The preparation method comprises the following steps:
mixing materials: mixing the raw materials at the room temperature of 20 ℃ and the speed of 150r/min for 30min by a stirrer, and discharging for later use after complete mixing.
Die assembly: and discharging, filling in a mold and leveling after uniformly mixing.
And (3) curing: in the device after the mold closing, the mold dies containing the filler are put into an oven to be baked at the temperature of 40 ℃ for 100 min.
Demolding: after the drying and curing are completed, the semi-finished product after curing can fall off by utilizing the self gravity and shaking slightly.
Brushing glue: and the semi-finished product is adhered to the nylon fastening tape on the back of the super abrasive disc through AB glue at room temperature of 20 ℃.
And (3) curing: and (4) putting the semi-finished product and the nylon fastening tape which are stuck together into an oven to be baked for 3 hours at the temperature of 100 ℃.
Trimming: the redundant parts around are trimmed by simple machines such as scissors, a punching knife, a punching machine and the like, the complete round appearance is kept, and the common finished products with the diameters of 80mm, 100mm, 125mm, 150mm and 180mm are obtained.
The grinding sheet 3 prepared in the embodiment is used for grinding the marble beige material, the surface of a processed workpiece has no phenomenon of plate dyeing and plate burning, and the glossiness can reach 90 degrees by using a photometer to measure.
Example 4:
raw materials (mass):
binding agent: 55% of polycarbonate and 25% of phenolic resin
Diamond: 5% and the granularity is 3000 meshes
Filling auxiliary materials: 40% of alumina and 20% of silicon carbide
The preparation method comprises the following steps:
mixing materials: mixing the raw materials at the room temperature of 20 ℃ and the speed of 150r/min for 30min by a stirrer, and discharging for later use after complete mixing.
Die assembly: and discharging, filling in a mold and leveling after uniformly mixing.
And (3) curing: in the device after the mold closing, the mold dies containing the filler are put into an oven to be baked at the temperature of 40 ℃ for 100 min.
Demolding: after the drying and curing are completed, the semi-finished product after curing can fall off by utilizing the self gravity and shaking slightly.
Brushing glue: and the semi-finished product is adhered to the nylon fastening tape on the back of the super abrasive disc through AB glue at room temperature of 20 ℃.
And (3) curing: and (4) putting the semi-finished product and the nylon fastening tape which are stuck together into an oven to be baked for 3 hours at the temperature of 100 ℃.
Trimming: the redundant parts around are trimmed by simple machines such as scissors, a punching knife, a punching machine and the like, the complete round appearance is kept, and the common finished products with the diameters of 80mm, 100mm, 125mm, 150mm and 180mm are obtained.
The grinding sheet 4 prepared in the embodiment is used for grinding the marble beige material, the surface of a processed workpiece has no phenomenon of plate dyeing and plate burning, and the glossiness can reach 85 degrees by using a photometer for measuring.
Example 5:
raw materials (mass):
binding agent: 60% of polycarbonate and 30% of phenolic resin
Diamond: 30 percent and the granularity of 3000 meshes
Filling auxiliary materials: 10% of alumina and 5% of silicon carbide
The preparation method comprises the following steps:
mixing materials: mixing the raw materials at the room temperature of 20 ℃ and the speed of 150r/min for 30min by a stirrer, and discharging for later use after complete mixing.
Die assembly: and discharging, filling in a mold and leveling after uniformly mixing.
And (3) curing: in the device after the mold closing, the mold dies containing the filler are put into an oven to be baked at the temperature of 40 ℃ for 100 min.
Demolding: after the drying and curing are completed, the semi-finished product after curing can fall off by utilizing the self gravity and shaking slightly.
Brushing glue: and the semi-finished product is adhered to the nylon fastening tape on the back of the super abrasive disc through AB glue at room temperature of 20 ℃.
And (3) curing: and (4) putting the semi-finished product and the nylon fastening tape which are stuck together into an oven to be baked for 3 hours at the temperature of 100 ℃.
Trimming: the redundant parts around are trimmed by simple machines such as scissors, a punching knife, a punching machine and the like, the complete round appearance is kept, and the common finished products with the diameters of 80mm, 100mm, 125mm, 150mm and 180mm are obtained.
The grinding sheet 5 prepared in the embodiment is used for grinding the marble beige material, the surface of a processed workpiece has no phenomenon of plate dyeing and plate burning, and the glossiness can reach 92 degrees measured by a photometer.
The diamond abrasive disc provided by the invention can be used for dry grinding, and has high glazing property, high heat resistance and high heat dissipation property, so that the diamond abrasive disc does not dye a plate, does not burn the plate and has high product glossiness.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims (7)

1. A diamond abrasive disc is obtained by sequentially mixing, die assembling, curing and demolding the following raw materials in percentage by mass:
10 to 80 percent of binder
5 to 50 percent of diamond
5-40% of filling auxiliary materials;
the bonding agent is polyolefin plastic and a resin material, and the mass ratio of the polyolefin plastic to the resin material is 1 (0.8-1.5);
the filling auxiliary materials are aluminum oxide and silicon carbide; the mass ratio of the alumina to the silicon carbide is (0.8-1.2): 1.
2. The diamond grinding disc according to claim 1, wherein the raw materials comprise 30-70% of bonding agent, 10-40% of diamond and 10-30% of filling auxiliary material.
3. The diamond grinding disc according to claim 2, wherein the raw materials comprise 40-60% of bonding agent, 20-35% of diamond and 15-25% of filler material.
4. The diamond abrasive sheet of claim 1, wherein the polyolefin-based plastic comprises one or more of polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, nylon, polycarbonate, polyurethane, and polytetrafluoroethylene.
5. A diamond grinding chip according to any one of claims 1 to 3, wherein the grain size of the diamond is 3000 mesh or more.
6. A method of manufacturing a diamond grinding chip according to any one of claims 1 to 5, comprising the steps of:
(1) mixing the bonding agent, the diamond and the filling auxiliary material to obtain a mixed material;
(2) and (2) closing the die and solidifying the mixed material obtained in the step (1), and then demolding to obtain the diamond abrasive disc.
7. The preparation method according to claim 6, wherein the curing temperature in the step (2) is 0-200 ℃, and the curing time is 0.5-12 h.
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CN112453389B (en) * 2020-10-31 2023-01-13 湖北小蚂蚁金刚石工具有限公司 Device for coating diamond

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CN101722478A (en) * 2010-01-21 2010-06-09 厦门致力金刚石工具有限公司 Diamond dry grinding disc and manufacturing method thereof
CN102218537B (en) * 2011-05-28 2012-10-10 长沙泰维超硬材料有限公司 Method for manufacturing pre-deformation line diamond line saw through powder metallurgy
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Denomination of invention: A diamond grinding disc and its preparation method

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