CN112720283B - Antistatic cloth-based coated abrasive tool and manufacturing method - Google Patents

Antistatic cloth-based coated abrasive tool and manufacturing method Download PDF

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Publication number
CN112720283B
CN112720283B CN202011546232.9A CN202011546232A CN112720283B CN 112720283 B CN112720283 B CN 112720283B CN 202011546232 A CN202011546232 A CN 202011546232A CN 112720283 B CN112720283 B CN 112720283B
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sand
cloth
layer
weight
planting
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CN112720283A (en
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齐守保
张晓月
刘哲
宋强
富凯
卢武
袁野
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Suzhou Far East Abrasives Co ltd
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Suzhou Far East Abrasives Co ltd
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/02—Backings, e.g. foils, webs, mesh fabrics
    • 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
    • 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
    • B24D3/285—Reaction products obtained from aldehydes or ketones
    • 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
    • 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
    • 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
    • C09J127/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers
    • C09J127/02—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J127/04—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C09J127/06—Homopolymers or copolymers of vinyl chloride
    • 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
    • C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
    • C09J161/04—Condensation polymers of aldehydes or ketones with phenols only
    • C09J161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • 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
    • C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
    • C09J9/02—Electrically-conducting adhesives
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
    • D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
    • D06L1/14—De-sizing
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
    • D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
    • D06M15/233—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated aromatic, e.g. styrene
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
    • D06M15/41—Phenol-aldehyde or phenol-ketone resins
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • 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
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • C08K2201/011—Nanostructured additives
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    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The invention provides an antistatic cloth-based coated abrasive tool, which sequentially comprises a cloth base, a primer layer, an abrasive material and a compound adhesive layer; the bottom glue layer is bonded on the sand planting surface of the cloth base; a plurality of grinding materials are uniformly and locally embedded into the bottom glue layer; the compound adhesive layer is adhered to the abrasive and the outer side of the bottom adhesive layer; the cloth base sequentially comprises a non-sand-planting surface scraping and gluing material layer, gray cloth and a sand-planting surface scraping and gluing material layer; the grey cloth is impregnated with antistatic impregnating rubber; the non-planting sand surface scraping and coating adhesive material layer and the planting sand surface scraping and coating adhesive material layer are doped with conductive materials; conductive fillers are mixed in the primer layer and the compound adhesive layer; the non-sand-planting surface scraping and gluing material layer, the impregnated glue material in the grey cloth, the sand-planting surface scraping and gluing material layer, the bottom glue layer and the compound glue layer form a conductive path in the grinding tool body so as to reduce the resistance value of the grinding tool body. The invention also provides a manufacturing method. The cloth base, the bottom glue layer and the compound glue layer of the grinding tool body form a conductive path, so that the conductivity is improved, and charges generated in the grinding process of the grinding tool body are conducted to the ground, so that the antistatic effect is achieved.

Description

Antistatic cloth-based coated abrasive tool and manufacturing method
Technical Field
The invention relates to the technical field of grinding tools, in particular to an antistatic cloth-based coated grinding tool and a manufacturing method thereof.
Background
Coated abrasive tools are widely used for grinding, polishing and sanding of non-metallic materials such as metallic materials, wood, ceramics, plastics, leather, rubber, paint putty and the like. When the coated abrasive tool is used, static electricity can be generated due to a large amount of friction, and the static electricity can charge chips generated in the using process of the coated abrasive tool, so that the smoothness of the surface of a grinding object is influenced. In addition, static electricity produces sparks, causing certain safety hazards.
The traditional antistatic cloth-based coated abrasive tool product generally adopts an antistatic agent to coat the product, and because no conductive path is formed in the product, the antistatic effect of the product cannot be expected.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the antistatic cloth-based coated grinding tool, which has good antistatic property, so that the grinding tool body is prevented from generating charges during grinding to influence the grinding, and the unsafety caused by sparks generated by grinding static electricity is avoided.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
The invention provides an antistatic cloth-based coated abrasive tool, which comprises an abrasive tool body, wherein the abrasive tool body sequentially comprises a cloth base, a primer layer, an abrasive material and a compound adhesive layer; the bottom glue layer is adhered to the sand planting surface of the cloth base; a plurality of the abrasive materials are uniformly and locally embedded into the bottom glue layer; the compound adhesive layer is bonded on the outer sides of the abrasive and the bottom adhesive layer; wherein, the first and the second end of the pipe are connected with each other,
the cloth base sequentially comprises a non-sand-planting surface scraping and gluing material layer, gray cloth and a sand-planting surface scraping and gluing material layer; the grey cloth is impregnated with an antistatic impregnating glue material; the non-sand-planting surface scraping and coating material layer and the sand-planting surface scraping and coating material layer are doped with conductive materials; conductive fillers are doped in the bottom glue layer and the compound glue layer;
the non-sand-planting surface scraping and gluing material layer, the impregnated glue material in the grey cloth, the sand-planting surface scraping and gluing material layer, the bottom glue layer and the compound glue layer form a conductive path in the grinding tool body so as to reduce the resistance value of the grinding tool body.
Preferably, the grey cloth is a blended fabric of 70-80 parts by weight of carbon fibers and 20-30 parts by weight of polyester fibers.
Preferably, the primer layer sizing material comprises the following materials in parts by weight:
Figure BDA0002855762480000021
the compound rubber layer rubber material comprises the following materials in parts by weight:
Figure BDA0002855762480000022
preferably, the impregnation size with which the greige cloth is impregnated comprises the following materials in parts by weight:
Figure BDA0002855762480000023
Figure BDA0002855762480000031
the non-sand-planting surface scraping sizing material layer comprises the following materials in parts by weight:
Figure BDA0002855762480000032
the sand-planting surface scraping sizing material layer sizing material comprises the following materials in parts by weight:
Figure BDA0002855762480000033
preferably, the solid content of the aqueous polyurethane emulsion is 48-50%, the glass transition temperature is 80-85 ℃, the pH value is 7-8, and the viscosity at 25 ℃ is 50-80 CP; the solid content of the liquid water-soluble phenolic resin is 70-75%, the water solubility is 1000-2000%, the pH value is 7-8, the viscosity at 25 ℃ is 200-400 CP, and the polymerization speed of 0.5g of the liquid water-soluble phenolic resin at 135 ℃ is 40-50S; the solid content of the vinyl chloride-vinyl acetate copolymer emulsion is 45-50%, the glass transition temperature is 70-75 ℃, the pH value is 7-8, and the viscosity at 25 ℃ is 30-60 CP; the solid content of the melamine resin is 49-51%, the pH value is 7-8, and the viscosity at 25 ℃ is 80-100 CP; the physical and chemical parameters of the butylbenzene emulsion are as follows: the solid content is 48-50%, the glass transition temperature is 80-90 ℃, the PH value is 7-8, and the viscosity at 25 ℃ is 60-80 CP.
Preferably, the heat conductivity coefficient of the electric and heat conductive material is 160-165W/m.K; the viscosity of the impregnated rubber material at 20 ℃ is 100-200 CP; the viscosity of the sizing material of the non-planting sand surface scraping sizing material layer at 20 ℃ is 4500-5500 CP; the viscosity of the sizing material of the sand-planting surface scraping sizing material layer at 25 ℃ is 380-450 CP.
It is a second object of the present invention to provide a method of manufacturing an antistatic cloth-based coated abrasive tool as described above, comprising the steps of:
fabric base treatment, namely desizing the grey fabric, dipping the desized fabric base by using a dipping sizing material, respectively carrying out blade coating treatment on the dipped fabric base by using a non-plant sand surface blade coating sizing material and a plant sand surface blade coating sizing material so as to respectively form a non-plant sand surface blade coating sizing material layer and a plant sand surface blade coating sizing material layer, and carrying out shaping treatment to obtain the fabric base;
coating a base glue, namely coating a base glue sizing material on the sand planting surface of the cloth base;
sand planting, namely planting a plurality of grinding materials on the coated base rubber material by adopting a reverse static sand planting process;
pre-drying at 80-115 ℃ to form a bottom glue layer embedded with the abrasive;
coating compound rubber, wherein the outer sides of the abrasive material and the bottom rubber layer are coated with compound rubber sizing materials;
and performing primary drying at the drying temperature of 90-120 ℃ to form the compound adhesive layer.
Preferably, the desizing treatment comprises the steps of padding the grey cloth with a desizing agent, cleaning with clear water, ironing and drying; the desizing agent comprises the following materials in parts by weight:
Figure BDA0002855762480000041
preferably, the reverse electrostatic sand-planting process comprises the following steps: the advancing direction of the base material is opposite to the running direction of the sand conveying belt, so that the coarse grinding materials are accelerated to be embedded into the base glue material.
Preferably, the total time of the pre-drying stage is 1-2 h, and the drying temperature in 15-50% of the final time of the pre-drying stage is 110-115 ℃; the total time of the main drying stage is 2-3 h, and the drying temperature in 15-50% of the final time of the main drying stage reaches 115-120 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides an antistatic cloth base coated abrasive tool, wherein antistatic non-sand-planting surface sizing material and antistatic non-sand-planting surface sizing material are respectively coated on the non-sand-planting surface and the sand-planting surface of a cloth base formed by impregnating grey cloth with antistatic impregnating sizing material in a scraping manner, so that a conductive path is formed in the cloth base, and the resistance value of the cloth base is further reduced. When the grinding tool body is manufactured, the conductive filler is added into the bottom rubber layer rubber material and the compound rubber layer rubber material, so that the bottom rubber layer, the compound rubber layer and the cloth substrate form a conductive path, and further the resistance of the grinding tool body is enabled to beValue less than 10 5 Omega, make the grinding apparatus body have high antistatic properties.
In a preferable scheme, the cloth base of the grinding tool body is made of grey cloth blended by 70-80 parts by weight of carbon fibers and 20-30 parts by weight of polyester fibers, so that the conductivity of the grey cloth is improved, the breaking strength of the cloth base is improved by more than 30% compared with that of a common polyester cloth base, the elongation is reduced by 20-30%, the high-temperature resistance, the conductivity, the chemical corrosion resistance and the mechanical property of the cloth base are improved, and the requirements of the cloth base on grinding under high-strength and strong-static conditions and efficient precision processing under chemical corrosion conditions are met. The problem that the traditional cloth base is reinforced by adopting thicker yarn count or density to improve the strength of the cloth base, but the yarn count and the density of the cloth base have certain limits and cannot be increased continuously after reaching a certain value is solved.
In a preferred scheme, the conductive materials in the impregnated sizing material, the non-sand-planting surface scraping sizing material and the sand-planting surface scraping sizing material are conductive and heat-conductive materials, so that a heat dissipation and conductive channel inside the cloth base is formed when the grinding tool is used for grinding; and the base rubber sizing material and the compound rubber sizing material comprise heat dissipation materials, so that the cloth base, the base rubber layer and the compound rubber layer form an internal heat dissipation and conductive channel together, heat and charges generated in the product grinding process are led out in time, dust is not adhered to an abrasive belt in grinding, and the durability of the abrasive belt is improved.
The invention provides a method for manufacturing the antistatic cloth-based coated abrasive tool, which adopts a unique cloth-based treatment process, a coated abrasive tool manufacturing process and various sizing material formulas to ensure that the produced abrasive tool body has high strength and high antistatic property, and the product resistance value is less than 10 5 Omega, is particularly suitable for high-strength precise grinding processing of nonpolar materials. In a preferable scheme, the shaping treatment of the fabric base treatment adopts ironing shaping treatment and quick cooling shaping treatment so as to improve the strength of the fabric base.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented according to the content of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a partial cross-sectional view of the abrasive body of the present invention;
FIG. 2 is a cross-sectional view of a fabric base structure of the present invention;
FIG. 3 is a flow chart of the steps of the manufacturing method of the present invention.
In the figure:
1. a grinder body; 10. cloth base; 11. scraping a glue material layer on a non-planting sand surface; 12. grey cloth; 13. scraping a precoat on the sand surface; 20. a primer layer; 30. an abrasive; 40. and (7) laminating the adhesive layer.
Detailed Description
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, which will enable those skilled in the art to practice the present invention with reference to the accompanying specification. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
The invention provides an antistatic cloth-based coated abrasive tool, which comprises an abrasive tool body 1, wherein the abrasive tool body 1 sequentially comprises a cloth base 10, a bottom glue layer 20, an abrasive 30 and a compound glue layer 40; the primer layer 20 is adhered to the sand-planted surface of the cloth base 10 and used for fixing the abrasive 30 on the side of the sand-planted surface of the cloth base 10; a plurality of the grinding materials 30 are uniformly and partially embedded into the bottom glue layer 20 for grinding the surface of an object to be ground, wherein the grinding materials 30 include but are not limited to corundum and carborundum; the compound adhesive layer 40 is adhered to the outer side of the primer layer 20 embedded with the abrasive 30, so that the abrasive 30 is firmly fixed on the cloth substrate 10; wherein the content of the first and second substances,
the cloth base 10 sequentially comprises a non-planted sand surface scraping and gluing material layer 11, a grey cloth 12 and a planted sand surface scraping and gluing material layer 13; the grey cloth 12 is impregnated with an antistatic impregnating glue; conductive materials are doped in the non-planting-sand-surface scraping and gluing material layer 11 and the planting-sand-surface scraping and gluing material layer 13; the non-planted sand surface scraping and gluing material layer 11, the impregnated glue material in the grey cloth 12 and the planted sand surface scraping and gluing material layer 13 form a conductive path in the cloth base 10, so that the resistance value of the cloth base 10 is reduced, and the conductivity of the cloth base 10 is improved;
conductive fillers are doped in the primer layer 20 and the compound adhesive layer 40;
the non-planted sand surface scraping and gluing material layer 11, the impregnated glue material in the grey cloth 12, the planted sand surface scraping and gluing material layer 13, the bottom glue layer 20 and the compound glue layer 40 form a conductive path in the grinding tool body 1 so as to reduce the resistance value of the grinding tool body 1. That is, the conductive path inside the cloth base 10, the primer layer 20 and the conductive filler inside the compound adhesive layer 40 form the conductive path of the grinding tool body 1 together, so that the grinding tool body 1 has conductivity, charges generated by the grinding tool body 1 are conducted to the ground through the metal shell of the contact device, generation of static electricity is prevented, influence on grinding due to electrification generated when the grinding tool body 1 is ground due to the static electricity is avoided, and use safety is improved.
In one embodiment, the grey cloth 12 is a blended cloth of 70-80 parts by weight of carbon fibers and 20-30 parts by weight of polyester fibers, so that the modulus, the high temperature resistance, the conductivity, the chemical corrosion resistance and the mechanical property of the cloth base are improved, and the requirements of the cloth base on grinding under high-strength and strong static conditions and efficient precision processing under the chemical corrosion conditions are met. Compared with the common cloth base, the breaking strength of the cloth base prepared by the grey cloth blended by the carbon fiber and the polyester fiber is improved by more than 30%, and the elongation is reduced by 20-30%.
In one embodiment, the primer layer 20 comprises the following materials in parts by weight:
Figure BDA0002855762480000081
specifically, the flexibility of the glue material of the primer layer 20 is improved by blending the polyurethane resin and the phenolic resin, the nano graphite hollow spheres have good electrical conductivity and heat dissipation performance, the electrical conductivity is provided by the electrically conductive filler, and the heat dissipation performance of the primer layer 20 is improved by the heat dissipation material and the heat conduction material.
In one embodiment, the compound adhesive layer 40 includes the following materials in parts by weight:
Figure BDA0002855762480000082
specifically, the flexibility of the glue material of the primer layer 20 is improved by blending polyurethane resin and phenolic resin, the nano graphite hollow spheres have good electrical conductivity and heat dissipation performance, the conductive filler provides electrical conductivity, the heat dissipation performance of the primer layer 20 is improved by a heat dissipation material and a heat conduction material, and the fluidity of the glue material of the compound glue layer 40 is improved by a leveling agent when the glue material is coated, so that the surface of the compound glue layer 40 is smooth.
In one embodiment, the size impregnated into the blank 12 includes the following materials in parts by weight:
Figure BDA0002855762480000091
further, in the dipping sizing material, the physical and chemical parameters of the aqueous polyurethane emulsion are as follows: the solid content is 48-50%, the glass transition temperature is 80-85 ℃, the PH value is 7-8, and the viscosity at 25 ℃ is 50-80 CP. Further, the physical and chemical parameters of the liquid water-soluble phenolic resin are as follows: the solid content is 70-75%, the water solubility is 1000-2000%, the pH value is 7-8, the viscosity at 25 ℃ is 200-400 CP, and the polymerization speed of 0.5g of liquid water-soluble phenolic resin at 135 ℃ is 40-50S.
The water-based polyurethane emulsion and the liquid water-soluble phenolic resin can generate a synergistic effect, improve the bonding property and improve the mechanical property of the cloth base. The wollastonite can improve the heat resistance and the setting performance of the cloth base, and in addition, the wollastonite can play a bridging role between the liquid water-soluble phenolic resin and the cloth base fiber, so that the bonding between the liquid water-soluble phenolic resin and the cloth base fiber is enhanced, the strength of the cloth base is improved, and the conductive and heat-conducting material is fixed to prevent the conductive and heat-conducting material from being forced to move to damage a conductive channel. The organic fluorine modified styrene-acrylic emulsion improves the chemical resistance, the corrosion resistance and the durability of the cloth base.
Furthermore, the viscosity of the dipping glue stock at 20 ℃ is 100-200 CP, which is beneficial to dipping operation.
In an embodiment, the sizing material of the non-sand-planting surface scraping sizing material layer 11 comprises the following materials in parts by weight:
Figure BDA0002855762480000092
Figure BDA0002855762480000101
further, in the non-sand-planted surface scrape coating sizing material, the physical and chemical parameters of the aqueous polyurethane emulsion are as follows: the solid content is 48-50%, the glass transition temperature is 80-85 ℃, the PH value is 7-8, and the viscosity at 25 ℃ is 50-80 CP. Further, the physical and chemical parameters of the liquid water-soluble phenolic resin are as follows: the solid content is 70-75%, the water solubility is 1000-2000%, the pH value is 7-8, the viscosity at 25 ℃ is 200-400 CP, and the polymerization speed of 0.5g of liquid water-soluble phenolic resin at 135 ℃ is 40-50S. The water-based polyurethane emulsion and the liquid water-soluble phenolic resin can generate a synergistic effect, improve the bonding property and improve the mechanical property of the non-sand-planting surface scraping coating sizing material of the cloth base. The light calcium carbonate is used as filling filler to improve the wear resistance of the non-sand-planted surface of the cloth base.
Further, the physical and chemical parameters of the vinyl chloride-vinyl acetate copolymer emulsion are as follows: the solid content is 45-50%, the glass transition temperature is 70-75 ℃, the pH value is 7-8, and the viscosity at 25 ℃ is 30-60 CP. The physical and chemical parameters of the melamine resin are as follows: the solid content is 49-51%, the pH value is 7-8, and the viscosity at 25 ℃ is 80-100 CP. In addition, the vitrification temperature of the vinyl chloride-vinyl acetate copolymer emulsion used for blade coating of the non-planted sand surface is 70-75 ℃, the melamine resin and the liquid water-soluble phenolic resin have good setting performance, and when the three sizing materials are dried and cured, three organic compounds are mutually crossed and cured to form three mutually-interpenetrated stable reticular structures so as to form a fabric protective layer on the back surface of the fabric base, so that the stiffness, heat resistance and wear resistance of the coated abrasive fabric base are effectively improved. In addition, the three-dimensional interpenetrating net-shaped structure formed by curing the vinyl chloride-vinyl acetate copolymer emulsion, the melamine resin and the liquid water-soluble phenolic resin is doped with the electric and heat conducting material, so that a three-dimensional electric and heat conducting structure is formed, and the electric conductivity and the heat dissipation performance are enhanced.
Furthermore, the non-sand-planting surface scraping sizing material also comprises 10-20 parts by weight of inorganic filler, and is used for playing a bridging role between resin and cloth-based fibers in the non-sand-planting surface scraping sizing material, enhancing the bonding between the non-sand-planting surface scraping sizing material and the cloth-based fibers, improving the cloth-based strength, and fixing the conductive and heat-conductive material to prevent the conductive channel from being damaged due to forced movement. Further, the inorganic filler for bridging includes, but is not limited to, quartz glass, alumina powder, silica powder.
Furthermore, the viscosity of the non-sand-planted surface scraping sizing material at 20 ℃ is 4500-5500 CP, which is beneficial to scraping.
In one embodiment, the sand-planted surface scraping coating material layer 13 comprises the following materials in parts by weight:
Figure BDA0002855762480000111
further, in the step of scraping and coating a sizing material on a sand-planting surface, the solid content of the aqueous polyurethane emulsion is 48-50%, the glass transition temperature is 80-85 ℃, the pH value is 7-8, and the viscosity at 25 ℃ is 50-80 CP; the solid content of the liquid water-soluble phenolic resin is 70-75%, the water solubility is 1000-2000%, the pH value is 7-8, the viscosity at 25 ℃ is 200-400 CP, and the polymerization speed of 0.5g of the liquid water-soluble phenolic resin at 135 ℃ is 40-50S. The water-based polyurethane emulsion and the liquid water-soluble phenolic resin can generate a synergistic effect, improve the bonding property and improve the mechanical property of the sizing material scraped on the sand planting surface of the cloth base. The heat dissipation material in the sand-planted surface scrape coating glue improves the heat dissipation performance of the cloth-based sand-planted surface, and accelerates the heat generated by friction in the grinding process.
Further, in the coating sizing material of the sand-planted surface, the physical and chemical parameters of the styrene-butadiene emulsion are as follows: the solid content is 48-50%, the glass transition temperature is 80-90 ℃, the PH value is 7-8, and the viscosity at 25 ℃ is 60-80 CP. The styrene-butadiene and the aqueous polyurethane emulsion with the vitrification temperature of 80-90 ℃ used by the styrene-butadiene emulsion adopted by the blade coating of the sand-planted surface ensure the stiffening and shaping quality of the cloth base.
Furthermore, the sand-planting surface scraping sizing material also comprises 10-20 parts by weight of inorganic filler, and is used for bridging between resin and cloth-based fibers in the sand-planting surface scraping sizing material, enhancing the bonding between the sand-planting surface scraping sizing material and the cloth-based fibers, improving the cloth-based strength, and fixing the conductive and heat-conductive material to prevent the conductive and heat-conductive material from being forced to move to damage a conductive channel. Further, the inorganic filler for bridging includes, but is not limited to, quartz glass, alumina powder, silica powder.
Furthermore, the viscosity of the sizing material coated on the sand-planted surface at 25 ℃ is 380-450 CP, and the coating of the sizing material is facilitated.
In one embodiment, the heat conductivity coefficient of the electric and heat conductive material contained in the impregnated rubber material, the non-sand-planted surface blade coating rubber material and the sand-planted surface blade coating rubber material is 160-165W/m.K, so that the cloth base subjected to impregnation treatment, non-sand-planted surface blade coating and sand-planted surface blade coating has good heat dissipation performance, heat generated in the grinding process is timely led out, and the durability of the abrasive belt is improved. Further, the electric and heat conductive material contained in the impregnating sizing material, the non-sand-planting-surface scraping sizing material and the sand-planting-surface scraping sizing material is a filler with high heat conductivity coefficient and high electric conductivity, and includes but is not limited to metal powder or carbon. Furthermore, the metal powder is nano-scale metal powder and can be uniformly dispersed in corresponding sizing materials.
The non-sand-planting surface and the sand-planting surface of the cloth base formed by impregnating the gray cloth with the antistatic impregnated rubber are respectively coated with the antistatic non-sand-planting surface rubber and the antistatic sand-planting surface rubber in a scraping manner, so that a conductive path is formed inside the cloth base, and the resistance value of the cloth base is further reduced. When the grinding tool body 1 is manufactured, the conductive filler is added into the glue material of the bottom glue layer 20 and the glue material of the compound glue layer 30, so that the bottom glue layer 20, the compound glue layer 30 and the cloth base 10 form a conductive path, and further, the resistance value of the grinding tool body is smaller than 10 5 Omega, make the grinding apparatus body have high antistatic properties. Further, when the base fabric of the base fabric coated abrasive tool is made of the grey fabric blended by the carbon fibers and the polyester fibers, the breaking strength of the base fabric is improved by more than 30% compared with that of the common polyester base fabric, the elongation is reduced by 20-30%, and the strength of the abrasive tool body 1 obtained by subsequent manufacturing is improved. Furthermore, the conductive materials in the non-sand-planted surface sizing material, the sand-planted surface sizing material and the impregnated sizing material are conductive and heat-conductive materials, and the bottom glue layer 20 sizing material and the compound glue layer 30 sizing material contain heat dissipation materials, so that the grinding tool body 1 forms a heat conduction channel and has good heat conductivity, heat and charges generated in the grinding process of the product are led out in time, dust is not adhered to a sand belt in grinding, the durability of the sand belt is improved, and the requirement of the product on efficient precision machining under the conditions of high strength and strong static electricity is met.
The present invention also provides a method of manufacturing the antistatic cloth-based coated abrasive tool as described above, as shown in fig. 3, comprising the steps of:
s1, performing cloth base treatment, namely desizing the grey cloth 12, dipping the desized cloth base by using a dipping sizing material, respectively performing blade coating treatment on the dipped cloth base by using a non-plant sand surface blade coating sizing material and a plant sand surface blade coating sizing material to respectively form a non-plant sand surface blade coating sizing material layer 11 and a plant sand surface blade coating sizing material layer 13, and performing sizing treatment to obtain the cloth base 10;
s2, coating a base glue, namely coating a base glue sizing material on the sand planting surface of the cloth base 10;
s3, planting sand, and planting a plurality of grinding materials 30 on the coated base glue stock by adopting a reverse static sand planting process;
s4, pre-drying at the drying temperature of 80-115 ℃ to form the bottom glue layer 20 embedded with the abrasive 30;
s5, coating compound glue, wherein the outer sides of the abrasive and the bottom glue layer 20 are coated with compound glue sizing materials;
and S6, drying the main body at the drying temperature of 90-120 ℃ to form the compound adhesive layer 40.
Further, the desizing treatment comprises the steps of padding the grey cloth with a desizing agent, cleaning with clear water, ironing and drying; the desizing agent comprises the following materials in parts by weight:
Figure BDA0002855762480000131
specifically, the propanol polyoxyethylene ether phosphate is a surfactant which can enable liquid to quickly permeate into fibers, and can effectively improve removal slurry of amylase and gluconic acid; glyceryl monostearate is a non-ionic wetting agent suitable for desizing various slurries. Potassium sulfite is an oxygen absorber and delays aging. The lauric acid monoglyceride is a nonionic surfactant, and is beneficial to uniform mixing and desizing treatment of the desizing agent. The desizing agent can accelerate the desizing treatment speed of the grey cloth and improve the removal rate of the grey cloth sizing agent.
Specifically, the step cloth substrate treatment comprises the following steps:
s11, desizing, padding the gray fabric with a desizing agent, cleaning with clear water, ironing and drying;
specifically, desizing and washing the grey cloth by a washing machine to remove residual sizing agent on the grey cloth so as to prevent the existence of the sizing agent from influencing the permeability of the grey cloth and hindering the permeability of subsequent dipping sizing agent, non-sand-planting surface scrape coating sizing agent and antistatic sand-planting surface scrape coating sizing agent; the desizing agent is used for padding the grey cloth, and the grey cloth is dried after being cleaned by clear water so as to be used for the subsequent treatment process; further, before desizing treatment is carried out on the grey cloth, finishing and singeing treatment can be carried out on the grey cloth, wherein the finishing is to grind and shear the grey cloth to remove the surface defects of the grey cloth, and the singeing is to remove fluff on the surface of the grey cloth to enable the permeability of each part of the grey cloth to be similar or consistent;
s12, preparing an antistatic dipping glue stock, an antistatic non-sand-planting surface scraping glue stock and an antistatic sand-planting surface scraping glue stock respectively;
specifically, the dipping glue stock, the non-sand-planting surface scraping glue stock and the sand-planting surface scraping glue stock contain conductive materials, so that the antistatic property is realized;
s13, soaking the desized cloth base with a soaking sizing material to enable the soaking sizing material to penetrate into the cloth base, covering part of the soaking sizing material on the surface of the cloth base, filling part of the soaking sizing material into gaps between warps and wefts of the cloth base, and forming a conductive channel inside the cloth base;
s14, scraping the non-sand-planting surface of the cloth base by adopting a non-sand-planting surface scraping sizing material, and forming a non-sand-planting surface scraping sizing material layer 11 with a conductive channel on the non-sand-planting surface of the cloth base;
s15, adopting a sand planting surface scraping glue stock to scrape the sand planting surface of the cloth base, and forming a sand planting surface scraping glue stock layer 13 with a conductive channel on the sand planting surface of the cloth base;
s16, carrying out ironing and shaping treatment and quick cooling and shaping treatment on the cloth base processed in the steps;
wherein the ironing and shaping treatment comprises the steps of placing the non-blade-coated surface of the fabric base under a first ironing roller to iron for 10-30 s, and controlling the ironing temperature to be 180-185 ℃; then, placing the scraped surface of the cloth base under a second ironing roller for ironing for 10-30 s, and controlling the ironing temperature to be 180-185 ℃; furthermore, Teflon materials are sprayed on the surfaces of the first ironing roller and the second ironing roller, Teflon is polytetrafluoroethylene and is a non-stick coating, namely when the Teflon materials are used as a coating, the coating film is not stuck to most substances, is resistant to acid, alkali and various solvents, and can protect the ironing rollers;
and the quick cooling and shaping treatment comprises the step of carrying out quick cooling and shaping treatment on the fabric base subjected to ironing and shaping treatment for 10-15 s through a cooling roller with the temperature of 6-10 ℃. Through ironing and shaping and quick cooling and shaping treatment, molecules in fibers of the fabric base are directionally arranged when the fabric base is shaped, the strength of the fabric base is improved, the surface smoothness of the fabric base can be effectively improved, and the shaping quality of the fabric base is improved. According to the treatment process, through the use of the impregnated rubber material, the non-sand-planted surface scraping rubber material and the sand-planted surface scraping rubber material, the non-sand-planted surface, the inner part and the sand-planted surface of the cloth base contain conductive components to form a conductive path, so that the conductivity of the cloth base is improved, the electric charges of the cloth base are conducted to the ground through the metal shell of the contact equipment, the antistatic function is realized, and the antistatic effect is good.
Further, in step S13, the dip coating amount is 170-180 g/m 2 Clamping and drying the impregnated cloth base for 2-3 min by an oven, and controlling the drying temperature to be 90-160 ℃ so as to improve the amount and uniformity of the impregnated cloth base; in step S14, the non-sand-planted surface is coated with sizing material with a coating amount of 110-120 g/m 2 Drying for 1-3 min after blade coating, wherein the drying temperature is 80-150 ℃, so that the cloth base non-sand-planted surface is uniformly coated with the blade coating glue material; in step S15, the spreading amount of the sizing material on the sand-planted surface is 90-100 g/m 2 And drying for 1-3 min after blade coating, wherein the drying temperature is 90-160 ℃, and the cloth-based sand-planting surface is uniformly coated with the rubber material by blade coating.
The cloth base obtained by adopting the cloth base processing step has the advantages of improved strength, reduced elongation and smooth surface, and is suitable for producing and used for producing high-efficiency and high-precision grinding coated abrasive tools. The abrasive belt has the advantages of good heat conduction and electric conduction performance, excellent antistatic performance and quick heat dissipation, heat and electric charges generated by the cloth base in the grinding process can be timely led out, dust is not easy to adhere to the abrasive belt in grinding, and the durability of the abrasive belt is improved. The surface smoothness of the cloth base can be effectively improved through ironing and shaping and quick cooling and shaping treatment, and the shaping quality of the cloth base is improved. By improving the conductivity and strength of the cloth base 10, the conductivity and strength of the abrasive tool body 1 manufactured by using the cloth base are further improved. The breaking strength of the traditional polyester fiber cloth base reaches 5000N/5cm at most, and the cloth base obtained in the cloth base treatment step is made of carbon fiber and polyester fiber blended grey cloth, so that the breaking strength can reach 6000N/5cm, and the strength is high.
In one embodiment, the reverse electrostatic sand-planting process includes the steps of: the advancing direction of the base material is opposite to the running direction of the sand conveying belt, so that the embedding of coarse grinding materials into the base rubber material is accelerated. Make the thick abrasive grain in the abrasive material component to get into the primer sizing material earlier promptly, get into the primer sizing material behind the fine abrasive grain, improved grinding apparatus body 1's sharpness and chip removal space, improved grinding apparatus body 1's chip removal performance, ensure that the product sand face is sharp reliable.
In one embodiment, the total time of the pre-drying stage is 1-2 h, the drying temperature in the last 15-50% of the time of the pre-drying stage is 110-115 ℃, the primer sizing material is primarily cured, the holding force of the abrasive is increased, and the abrasive is prevented from loosening during adhesive coating; the total time of the main drying stage is 2-3 h, the drying temperature in 15-50% of the final time of the main drying stage reaches 115-120 ℃, and the product is solidified to reach the expected strength.
The cloth-based coated abrasive tool manufactured by the manufacturing method has the advantages that the abrasive tool body 1 is high in strength, good in heat conductivity and good in electrical conductivity, the grinding efficiency is improved by 20-30%, the grinding service life is prolonged by 30-50%, and the method is suitable for production of high-strength and high-efficiency antistatic cloth-based coated abrasive tools.
In order to illustrate the invention herein, specific examples are set forth below. It should be understood that these examples are for illustrative purposes only and are not to be construed as limiting the invention in any way.
Example 1
The method for manufacturing the antistatic cloth-based coated abrasive tool comprises the following steps:
(1) a grey fabric formed by blending carbon fibers and polyester fibers is used for preparing a fabric base, the grey fabric comprises 70 parts by weight of polyester, 30 parts by weight of carbon fibers, 12 x 10 yarn counts (namely 12 yarn counts in the radial direction and 10 yarn counts in the weft direction), and the density is 102 x 42 (namely the radial direction)Density 102, weft density 42), basis weight 330g/m 2 ；
(2) The cloth base treatment specifically comprises the following steps:
a. preparing a desizing agent, and carrying out padding, desizing by using clear water at 50 ℃ and ironing and drying at 130 ℃ on the grey cloth by using the desizing agent;
b. respectively preparing an antistatic dipping sizing material, an antistatic non-sand-planting surface scraping sizing material and an antistatic sand-planting surface scraping sizing material;
c. dipping the desized cloth base by using dipping sizing material, and controlling the dipping coating amount to be 170g/m 2 Holding and drying for 2min in an oven after dipping, and controlling the drying temperature to be 160 ℃;
d. adopting non-sand-planting antistatic scraping sizing material to scrape the non-sand-planting surface of the cloth base, and controlling the scraping amount to be 110g/m 2 Drying for 1min after blade coating, controlling the drying temperature to be 150 ℃, and forming a non-sand-planting surface scraping and coating adhesive material layer 11 with a conductive channel on the non-sand-planting surface of the cloth base;
e. adopting the sand-planting surface of the sand-planting surface antistatic knife coating sizing material cloth base to carry out knife coating, and controlling the knife coating amount to be 90g/m 2 Drying for 1min after blade coating, controlling the drying temperature to be 160 ℃, and forming a sand planting surface scraping and gluing material layer 13 with a conductive channel on the sand planting surface of the cloth base;
f. carrying out ironing and shaping treatment and quick cooling and shaping treatment on the treated cloth base: placing the non-knife-coated cloth surface under a first ironing roller with the surface sprayed with Teflon material, ironing for 10s, and controlling the ironing temperature to be 180 ℃; and then, scraping the coated surface of the cloth base, putting the coated surface of the cloth base under a second ironing roller with the surface sprayed with the Teflon material, ironing for 10s, controlling the ironing temperature to be 180 ℃, and then carrying out quick cooling setting treatment on the cloth base for 10s through a cooling roller with the temperature of 6 ℃. The diameters of the first ironing roller and the second ironing roller are both 3 meters;
(3) coating a base glue, namely coating a base glue sizing material on the sand planting surface of the cloth base 10; the primer rubber material comprises 100 parts by weight of phenolic resin, 30 parts by weight of conductive filler, 5 parts by weight of nano graphite hollow spheres, 15 parts by weight of polyurethane resin, 3 parts by weight of heat dissipation material and 3 parts by weight of heat conduction material;
(4) sand planting, namely planting a plurality of grinding materials 30 on the coated base rubber material by adopting a reverse static sand planting process;
(5) predrying, drying at 85 ℃ for 0.5 hour, drying at 100 ℃ for 0.5 hour, and drying at 115 ℃ for 0.5 hour to form the make layer 20 with the abrasive 30 embedded therein;
(6) coating compound rubber, wherein the outer sides of the abrasive 30 and the primer layer 20 are coated with compound rubber; the compound glue material comprises 40 parts by weight of conductive filler, 100 parts by weight of phenolic resin, 8 parts by weight of nano graphite hollow spheres, 20 parts by weight of polyurethane resin, 4 parts by weight of leveling agent, 3 parts by weight of heat dissipation material and 3 parts by weight of heat conduction material;
(7) primary drying, drying at 90 ℃ for 0.9 hour, drying at 100 ℃ for 0.9 hour, and drying at 115 ℃ for 0.9 hour to form the composite adhesive layer 40; preparing a grinding tool body 1;
wherein the desizing agent in the cloth base treatment step comprises 2 parts by weight of isopropanol polyoxyethylene ether phosphate, 3 parts by weight of gluconic acid, 20 parts by weight of amylase, 3 parts by weight of glyceryl monostearate, 0.5 part by weight of potassium sulfite, 1 part by weight of lauric acid monoglyceride and 63 parts by weight of deionized water; slowly adding the prepared desizing agent into a desizing water tank, soaking the cloth base in the desizing agent, then carrying out soaking desizing by three soaking rollers with 5bar pressure, cleaning by clear water at 50 ℃, ironing by 12 ironing rollers at 130 ℃ and drying.
The dipping glue material comprises 82 parts by weight of waterborne polyurethane emulsion, 15 parts by weight of organic fluorine modified styrene-acrylic emulsion, 20 parts by weight of liquid water-soluble phenolic resin, 30 parts by weight of wollastonite, 8 parts by weight of conductive and heat-conductive material and 15 parts by weight of water; the viscosity of the impregnated size at 20 ℃ is 100 CP. Further, the physical and chemical parameters of the aqueous polyurethane emulsion in the impregnated sizing material are as follows: the solids content was 48%, the glass transition temperature was 80 ℃, the pH 7 and the viscosity at 25 ℃ was 50 CP. The physical and chemical parameters of the liquid water-soluble phenolic resin in the impregnated sizing material are as follows: the solid content was 70%, the water solubility was 1000%, the pH was 7, the viscosity at 25 ℃ was 200CP, and the polymerization rate of 0.5g of liquid water-soluble phenol resin at 135 ℃ was 40S.
The non-sand-planting surface blade coating sizing material comprises 65 parts by weight of vinyl chloride-vinyl acetate copolymer emulsion, 15 parts by weight of melamine resin, 35 parts by weight of liquid water-soluble phenolic resin, 40 parts by weight of light calcium carbonate, 8 parts by weight of electric and heat conducting material and 15 parts by weight of aqueous polyurethane emulsion; the non-vegetable-sand-surface knife coating sizing material has the viscosity of 4500CP at the temperature of 20 ℃. Further, the physical and chemical parameters of the vinyl chloride-vinyl acetate copolymer emulsion are as follows: the solids content was 45%, the glass transition temperature was 70 ℃, the pH 7 and the viscosity at 25 ℃ was 30 CP. The physical and chemical parameters of the melamine resin are as follows: the solids content was 49%, the pH was 7 and the viscosity at 25 ℃ was 100 CP.
The sand-planted surface scraping coating sizing material comprises 100 parts by weight of butylbenzene emulsion, 30 parts by weight of liquid water-soluble phenolic resin, 15 parts by weight of waterborne polyurethane emulsion, 8 parts by weight of heat dissipation material and 8 parts by weight of electric conduction and heat conduction material; the viscosity of the sand-planting surface scraping sizing material at 25 ℃ is 380 CP. Further, the physical and chemical parameters of the butylbenzene emulsion are as follows: the solids content is 50%, the glass transition temperature is 80 ℃, the pH is 7 and the viscosity at 25 ℃ is 80 CP. The heat conductivity coefficient of the electric and heat conductive material is 160W/m.K. The heat dissipation material changes phase state at 195 ℃, and the heat dissipation material and the conductive heat conduction material effectively dissipate grinding heat and static charge, thereby ensuring the grinding efficiency and the service life of the grinding tool.
Example 2
A method of manufacturing an antistatic cloth-based coated abrasive tool as described above, comprising the steps of:
(1) the grey cloth blended by carbon fiber and polyester fiber is used for preparing a cloth base, and the grey cloth contains 80 weight parts of polyester and 20 weight parts of carbon fiber, the yarn count is 12 multiplied by 10, the density is 102 multiplied by 42, and the single weight is 330g/m 2 ；
(2) The cloth base treatment specifically comprises the following steps:
a. preparing a desizing agent, and carrying out padding, desizing by using clear water at 50 ℃ and ironing and drying at 130 ℃ on the grey cloth by using the desizing agent;
b. respectively preparing an antistatic dipping sizing material, an antistatic non-sand-planting surface scraping sizing material and an antistatic sand-planting surface scraping sizing material;
c. dipping the desized cloth base by using a dipping sizing material, and controlling the dipping coating amount to be 180g/m 2 After impregnation, clamping and drying for 3min in an oven, and controlling the drying temperature to be 90 ℃;
d. adopting non-sand-planting antistatic scraping sizing material to scrape the non-sand-planting surface of the cloth base, and controlling the scraping amount to be 120g/m 2 Scraping and drying for 3min, controlling the drying temperature to be 80 ℃, and forming a non-planted sand surface scraping and gluing material layer 11 with a conductive channel on the non-planted sand surface of the cloth base;
e. adopting the sand-planting surface of the sand-planting surface antistatic knife coating sizing material cloth base to carry out knife coating, and controlling the knife coating amount to be 100g/m 2 Scraping and drying for 3min, controlling the drying temperature to be 90 ℃, and forming a sand planting surface scraping and gluing material layer 13 with a conductive channel on the sand planting surface of the cloth base;
f. carrying out ironing and shaping treatment and quick cooling and shaping treatment on the treated cloth base: placing the non-knife-coated cloth surface under a first ironing roller with a Teflon material sprayed on the surface, ironing for 30s, and controlling the ironing temperature to be 170 ℃; and then, scraping the coated surface of the cloth base, putting the coated surface of the cloth base under a second ironing roller with the surface sprayed with the Teflon material, ironing for 30s, controlling the ironing temperature to be 170 ℃, and then carrying out 15s quick cooling and shaping treatment on the cloth base by a cooling roller with the temperature of 10 ℃. The diameters of the first ironing roller and the second ironing roller are both 3 meters;
(3) coating a base glue, namely coating a base glue sizing material on the sand planting surface of the cloth base 10; the primer rubber material comprises 100 parts by weight of phenolic resin, 35 parts by weight of conductive filler, 6 parts by weight of nano graphite hollow spheres, 20 parts by weight of polyurethane resin, 3 parts by weight of heat dissipation material and 4 parts by weight of heat conduction material;
(4) sand planting, namely planting a plurality of grinding materials 30 on the coated base rubber material by adopting a reverse static sand planting process;
(5) predrying, drying at 85 ℃ for 0.5 hour, drying at 100 ℃ for 0.5 hour, and drying at 115 ℃ for 0.5 hour to form the make layer 20 with the abrasive 30 embedded therein;
(6) coating compound rubber, wherein the outer sides of the abrasive 30 and the primer layer 20 are coated with compound rubber; the compound glue material comprises 30 parts by weight of conductive filler, 100 parts by weight of phenolic resin, 10 parts by weight of nano graphite hollow spheres, 15 parts by weight of polyurethane resin, 3 parts by weight of flatting agent, 5 parts by weight of heat dissipation material and 5 parts by weight of heat conduction material;
(7) primary drying, drying at 90 ℃ for 0.9 hour, drying at 100 ℃ for 0.9 hour, and drying at 115 ℃ for 0.9 hour to form the composite adhesive layer 40; preparing a grinding tool body 1;
wherein the desizing agent in the cloth base treatment step comprises 2 parts by weight of isopropanol polyoxyethylene ether phosphate, 2 parts by weight of gluconic acid, 25 parts by weight of amylase, 4 parts by weight of glyceryl monostearate, 0.8 part by weight of potassium sulfite, 2 parts by weight of lauric acid monoglyceride and 71 parts by weight of deionized water; slowly adding the prepared desizing agent into a desizing water tank, soaking the cloth base in the desizing agent, then carrying out soaking and desizing by three soaking and binding rollers with the pressure of 5bar, and then adopting clear water at 50 ℃ for cleaning and 12 ironing and drying by 130 ℃ rollers.
The dipping glue material comprises 80 parts by weight of waterborne polyurethane emulsion, 10 parts by weight of organic fluorine modified styrene-acrylic emulsion, 15 parts by weight of liquid water-soluble phenolic resin, 25 parts by weight of wollastonite, 5 parts by weight of conductive and heat-conductive material and 10 parts by weight of water; the viscosity of the impregnated size at 20 ℃ is 200 CP. Further, the physical and chemical parameters of the aqueous polyurethane emulsion are as follows: the solids content is 50%, the glass transition temperature is 80 ℃, the pH is 7 and the viscosity at 25 ℃ is 50 CP. The physical and chemical parameters of the liquid water-soluble phenolic resin are as follows: the solid content was 75%, the water solubility was 1500%, the pH was 7, the viscosity at 25 ℃ was 300CP, and the polymerization rate of 0.5g of liquid water-soluble phenol resin at 135 ℃ was 42S.
The non-sand-planting surface knife coating sizing material comprises 60 parts by weight of chloroethylene-vinyl acetate copolymer emulsion, 10 parts by weight of melamine resin, 30 parts by weight of liquid water-soluble phenolic resin, 35 parts by weight of light calcium carbonate, 5 parts by weight of electric and heat conducting material and 12 parts by weight of aqueous polyurethane emulsion; the non-vegetable-sand-surface knife coating sizing material has the viscosity of 4800CP at the temperature of 20 ℃. Further, the physical and chemical parameters of the vinyl chloride-vinyl acetate copolymer emulsion are as follows: the solids content was 50%, the glass transition temperature was 75 ℃, the pH was 7 and the viscosity at 25 ℃ was 60 CP. The physical and chemical parameters of the melamine resin are as follows: the solids content was 51%, the pH 7 and the viscosity at 25 ℃ was 100 CP.
The sand-planted surface scraping coating glue material comprises 90 parts by weight of butylbenzene emulsion, 20 parts by weight of liquid water-soluble phenolic resin, 10 parts by weight of waterborne polyurethane emulsion, 5 parts by weight of heat dissipation material and 5 parts by weight of electric conduction and heat conduction material; the viscosity of the sand-planted surface scrape coating sizing material at 25 ℃ is 400 CP. Further, the physical and chemical parameters of the butylbenzene emulsion are as follows: the solids content was 48%, the glass transition temperature was 90 ℃, the pH 7 and the viscosity at 25 ℃ was 70 CP. The thermal conductivity of the electric and heat conductive material is 163W/m.K. The heat dissipation material undergoes a phase change at 198 ℃. The heat dissipation material and the conductive and heat conductive material effectively dissipate grinding heat and static charge, and the grinding efficiency and the service life of the grinding tool are guaranteed.
Example 3
A method of manufacturing an antistatic cloth-based coated abrasive tool as described above, comprising the steps of:
(1) the grey cloth blended by carbon fiber and polyester fiber is adopted for preparing the cloth base, the grey cloth comprises 75 weight parts of polyester and 25 weight parts of carbon fiber, the yarn count is 12 multiplied by 10 (namely 12 yarn counts in the radial direction and 10 yarn counts in the weft direction), the density is 102 multiplied by 42 (namely 102 yarn counts in the radial direction and 42 yarn counts in the weft direction), and the single weight is 330g/m 2 ；
(2) The cloth base treatment specifically comprises the following steps:
a. preparing a desizing agent, and carrying out padding, desizing by using clear water at 50 ℃ and ironing and drying at 130 ℃ on the grey cloth by using the desizing agent;
b. respectively preparing an antistatic dipping sizing material, an antistatic non-sand-planting surface scraping sizing material and an antistatic sand-planting surface scraping sizing material;
c. dipping the desized cloth base by using a dipping sizing material, and controlling the dipping coating amount to be 175g/m 2 Holding and drying for 2.5min in an oven after dipping, and controlling the drying temperature to be 120 ℃;
d. adopting the antistatic scraping sizing material of the non-sand-planting surface to scrape the non-sand-planting surface of the cloth base, and controlling the scraping amount to be115g/m 2 Drying for 2min after blade coating, controlling the drying temperature to be 130 ℃, and forming a non-planted sand surface scraping and gluing material layer 11 with a conductive channel on the non-planted sand surface of the cloth base;
e. adopting the sand-planting surface of the sand-planting surface antistatic knife coating sizing material cloth base to carry out knife coating, and controlling the knife coating amount to be 95g/m 2 Scraping and drying for 2min, controlling the drying temperature to be 130 ℃, and forming a sand planting surface scraping and gluing material layer 13 with a conductive channel on the sand planting surface of the cloth base;
f. carrying out ironing and shaping treatment and quick cooling and shaping treatment on the treated cloth base: placing the non-knife-coated cloth surface under a first ironing roller with Teflon material sprayed on the surface, ironing for 20s, and controlling the ironing temperature to be 175 ℃; and then, the coated surface of the cloth base is arranged under a second ironing roller with the surface sprayed with the Teflon material to be ironed for 20s, the ironing temperature is controlled to be 175 ℃, and then the cloth base is subjected to 13s quick cooling setting treatment through a cooling roller with the temperature of 8 ℃. The diameters of the first ironing roller and the second ironing roller are both 3 meters;
(3) coating a base glue, namely coating a base glue sizing material on the sand planting surface of the cloth base 10; the primer rubber material comprises 100 parts by weight of phenolic resin, 40 parts by weight of conductive filler, 7 parts by weight of nano graphite hollow spheres, 20 parts by weight of polyurethane resin and 4 parts by weight of heat dissipation material \5 parts by weight of heat conduction material;
(4) sand planting, namely planting a plurality of grinding materials 30 on the coated base rubber material by adopting a reverse static sand planting process;
(5) predrying, drying at 85 ℃ for 0.6 hour, drying at 100 ℃ for 0.6 hour, and drying at 115 ℃ for 0.6 hour to form the make layer 20 with the abrasive 30 embedded therein;
(6) coating compound glue, wherein compound glue sizing materials are coated on the outer sides of the abrasive 30 and the primer layer 20; the compound glue material comprises 40 parts by weight of conductive filler, 100 parts by weight of phenolic resin, 10 parts by weight of nano graphite hollow spheres, 10 parts by weight of polyurethane resin, 4 parts by weight of flatting agent, 5 parts by weight of heat dissipation material and 4 parts by weight of heat conduction material;
(7) primary drying, drying at 90 ℃ for 0.9 hour, drying at 100 ℃ for 0.8 hour, and drying at 115 ℃ for 0.9 hour to form the composite adhesive layer 40; preparing a grinding tool body 1;
wherein the desizing agent in the cloth-based treatment step comprises 2.5 parts by weight of isopropanol polyoxyethylene ether phosphate, 2.5 parts by weight of gluconic acid, 22 parts by weight of amylase, 4 parts by weight of glycerol monostearate, 0.7 part by weight of potassium sulfite, 1.8 parts by weight of glycerol monolaurate and 65 parts by weight of deionized water; slowly adding the prepared desizing agent into a desizing water tank, soaking the cloth base in the desizing agent, then carrying out soaking and desizing by three soaking and binding rollers with the pressure of 5bar, and then adopting clear water at 50 ℃ for cleaning and 12 ironing and drying by 130 ℃ rollers.
The dipping glue comprises 81 parts by weight of waterborne polyurethane emulsion; 13 parts of organic fluorine modified styrene-acrylic emulsion; 18 parts of liquid water-soluble phenolic resin; 28 parts of wollastonite; 7 parts of electric and heat conducting material; 12 parts of water; the viscosity of the impregnated size at 20 ℃ was 150 CP. Further, the physical and chemical parameters of the aqueous polyurethane emulsion are as follows: the solids content was 49%, the glass transition temperature was 80 ℃, the pH was 7 and the viscosity at 25 ℃ was 50 CP. The physical and chemical parameters of the liquid water-soluble phenolic resin are as follows: the solids content was 72%, the water solubility was 2000%, the pH was 7, the viscosity at 25 ℃ was 350CP, and the polymerization rate of 0.5g of the phenolic resin was 44S at 135 ℃.
The non-sand-planting surface blade coating sizing material comprises 63 parts by weight of vinyl chloride-vinyl acetate copolymer emulsion, 13 parts by weight of melamine resin, 35 parts by weight of liquid water-soluble phenolic resin, 38 parts by weight of light calcium carbonate, 7 parts by weight of electric and heat conducting material and 14 parts by weight of aqueous polyurethane emulsion; the non-vegetable-sand-surface knife coating glue stock has the viscosity of 5000CP at the temperature of 20 ℃. Further, the physical and chemical parameters of the vinyl chloride-vinyl acetate copolymer emulsion are as follows: the solids content was 49%, the glass transition temperature was 72 ℃, the pH was 7 and the viscosity at 25 ℃ was 50 CP. The physical and chemical parameters of the melamine resin are as follows: the solids content was 50%, the pH 7 and the viscosity at 25 ℃ 90 CP.
The sand-planting surface blade coating sizing material comprises 95 parts by weight of butylbenzene emulsion, 28 parts by weight of liquid water-soluble phenolic resin, 13 parts by weight of aqueous polyurethane emulsion, 6 parts by weight of heat dissipation material and 7 parts by weight of conductive and heat conductive material; the viscosity of the sand-planted surface scraping sizing material at 25 ℃ is 420 CP. Further, the physical and chemical parameters of the butylbenzene emulsion are as follows: the solids content was 49%, the glass transition temperature was 85 ℃, the pH was 7 and the viscosity at 25 ℃ was 70 CP. The heat conductivity coefficient of the electric and heat conductive material is 165W/m.K. The heat dissipation material has a phase change at 200 ℃. The heat dissipation material and the conductive and heat conductive material effectively dissipate grinding heat and static charge, and the grinding efficiency and the service life of the grinding tool are guaranteed.
In the grinding tool body 1 manufactured in the embodiments 1, 2, and 3, since the grey cloth is formed by blending the carbon fiber and the polyester, the breaking strength of the cloth base is improved by more than 30% compared with that of a common polyester cloth base, the elongation is reduced by 20-30%, the mechanical property of the cloth base is improved, and the conductivity of the cloth base 10 of the grinding tool body 1 is also improved. In addition, in the process of treating the cloth base, the cloth base is subjected to antistatic dipping glue stock dipping, antistatic non-sand-planting surface scraping glue stock scraping and antistatic sand-planting surface scraping and coating, so that a conductive channel is formed from the non-sand-planting surface to the sand-planting surface (from inside to outside), the conductivity of the cloth base 10 is further improved, the mechanical strength of the cloth base is increased, the surface of the cloth base is smooth, the strength is higher, and the conductivity is better. The fabric base is shaped by ironing and shaping and rapid cooling to improve the strength of the fabric base. The grinding tool body 1 is manufactured by adopting the cloth base with good conductive performance and mechanical strength, and the conductive filler is added into the bottom glue layer 20 and the compound glue layer 40 of the grinding tool body 1, so that the cloth base 10, the bottom glue layer 20 and the compound glue layer 40 form a conductive path, the resistance value of the grinding tool body 1 is reduced, the grinding tool body 1 has high antistatic performance, and the resistance value of the grinding tool body 1 is smaller than 10 5 Ω。
The foregoing is merely a preferred embodiment of this invention and is not intended to limit the invention in any manner; one of ordinary skill in the art can readily practice the present invention as illustrated and described herein with reference to the accompanying drawings; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.

Claims (7)

1. An antistatic cloth-based coated abrasive tool comprises an abrasive tool body (1), and is characterized in that the abrasive tool body (1) sequentially comprises a cloth base (10), a bottom adhesive layer (20), an abrasive material (30) and a compound adhesive layer (40); the bottom glue layer (20) is adhered to the sand planting surface of the cloth base (10); a plurality of said abrasives (30) being uniformly partially embedded in said make coat (20); the compound glue layer (40) is adhered to the outer sides of the abrasive material (30) and the bottom glue layer (20); wherein the content of the first and second substances,
the cloth base (10) sequentially comprises a non-sand-planting surface scraping and gluing material layer (11), a grey cloth (12) and a sand-planting surface scraping and gluing material layer (13); the grey cloth (12) is impregnated with an antistatic impregnating glue material; conductive materials are doped in the non-sand-planting surface scraping and gluing material layer (11) and the sand-planting surface scraping and gluing material layer (13); conductive fillers are doped in the bottom glue layer (20) and the compound glue layer (40);
the non-sand-planting surface scraping and gluing material layer (11), the impregnated glue material in the grey cloth (12), the sand-planting surface scraping and gluing material layer (13), the bottom glue layer (20) and the compound glue layer (40) form a conductive path in the grinding tool body (1) so as to reduce the resistance value of the grinding tool body (1);
the grey cloth (12) is blended cloth of 70-80 parts by weight of carbon fibers and 20-30 parts by weight of polyester fibers;
the glue material of the bottom glue layer (20) comprises the following materials in parts by weight:
Figure FDA0003657691610000011
the compound glue layer (40) comprises the following materials in parts by weight:
Figure FDA0003657691610000012
Figure FDA0003657691610000021
the impregnated sizing material impregnated in the grey cloth (12) comprises the following materials in parts by weight:
Figure FDA0003657691610000022
the non-sand-planting surface scraping coating material layer (11) comprises the following materials in parts by weight:
Figure FDA0003657691610000023
the sand-planting surface scraping and gluing material layer (13) comprises the following materials in parts by weight:
Figure FDA0003657691610000024
2. the antistatic cloth-based coated abrasive tool according to claim 1, wherein the solid content of the aqueous polyurethane emulsion is 48-50%, the glass transition temperature is 80-85 ℃, the pH value is 7-8, and the viscosity at 25 ℃ is 50-80 CP; the solid content of the liquid water-soluble phenolic resin is 70-75%, the water solubility is 1000-2000%, the pH value is 7-8, the viscosity at 25 ℃ is 200-400 CP, and the polymerization speed of 0.5g of the liquid water-soluble phenolic resin at 135 ℃ is 40-50S; the solid content of the vinyl chloride-vinyl acetate copolymer emulsion is 45-50%, the glass transition temperature is 70-75 ℃, the pH value is 7-8, and the viscosity at 25 ℃ is 30-60 CP; the solid content of the melamine resin is 49-51%, the pH value is 7-8, and the viscosity at 25 ℃ is 80-100 CP; the physical and chemical parameters of the butylbenzene emulsion are as follows: the solid content is 48-50%, the glass transition temperature is 80-90 ℃, the PH value is 7-8, and the viscosity at 25 ℃ is 60-80 CP.
3. The antistatic cloth-based coated abrasive tool according to claim 2, wherein the heat conductivity coefficient of the electrically and thermally conductive material is 160 to 165W/m-K; the viscosity of the impregnated rubber material at 20 ℃ is 100-200 CP; the viscosity of the sizing material of the non-planting sand surface scraping sizing material layer (11) at 20 ℃ is 4500-5500 CP; the viscosity of the sizing material of the sand-planting surface scraping sizing material layer (13) at 25 ℃ is 380-450 CP.
4. A method of making an antistatic cloth-based coated abrasive tool according to any of claims 1 to 3 comprising the steps of:
fabric base treatment, namely desizing the grey fabric (12), dipping the desized fabric base by using a dipping sizing material, respectively carrying out blade coating treatment on the dipped fabric base by using a non-plant sand surface blade coating sizing material and a plant sand surface blade coating sizing material to respectively form a non-plant sand surface blade coating sizing material layer (11) and a plant sand surface blade coating sizing material layer (13), and carrying out sizing treatment to obtain the fabric base (10);
coating a base glue, namely coating a base glue sizing material on the sand planting surface of the cloth base (10);
sand planting, wherein a plurality of grinding materials (30) are planted on the coated base rubber material by adopting a reverse static sand planting process;
pre-drying at 80-115 ℃ to form a primer layer (20) embedded with the abrasive (30);
coating compound glue, namely coating compound glue sizing materials on the outer sides of the abrasive material (30) and the bottom glue layer (20);
and performing primary drying at the drying temperature of 90-120 ℃ to form the compound adhesive layer (40).
5. The manufacturing method according to claim 4, wherein the desizing treatment comprises desizing agent padding of the raw fabric, rinsing with clean water, ironing and drying; the desizing agent comprises the following materials in parts by weight:
Figure FDA0003657691610000041
6. the method of manufacturing according to claim 4, wherein the reverse electrostatic sand-planting process comprises the steps of: the advancing direction of the base material is opposite to the running direction of the sand conveying belt, so that the embedding of coarse grinding materials into the base rubber material is accelerated.
7. The method according to claim 4, wherein the total time of the pre-drying stage is 1 to 2 hours, and the drying temperature in 15 to 50% of the final time of the pre-drying stage is 110 to 115 ℃; the total time of the main drying stage is 2-3 h, and the drying temperature in 15-50% of the final time of the main drying stage reaches 115-120 ℃.
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