CN114770367B - Elastic porous polishing white pad for edging display screen and production process thereof - Google Patents
Elastic porous polishing white pad for edging display screen and production process thereof Download PDFInfo
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- CN114770367B CN114770367B CN202210450971.0A CN202210450971A CN114770367B CN 114770367 B CN114770367 B CN 114770367B CN 202210450971 A CN202210450971 A CN 202210450971A CN 114770367 B CN114770367 B CN 114770367B
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- layer
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- surface layer
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- 238000005498 polishing Methods 0.000 title claims abstract description 126
- 238000007688 edging Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- 239000010410 layer Substances 0.000 claims abstract description 114
- 239000002344 surface layer Substances 0.000 claims abstract description 67
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 35
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 34
- 239000004677 Nylon Substances 0.000 claims abstract description 25
- 229920001778 nylon Polymers 0.000 claims abstract description 25
- 229920002635 polyurethane Polymers 0.000 claims abstract description 25
- 239000004814 polyurethane Substances 0.000 claims abstract description 25
- 229920000728 polyester Polymers 0.000 claims abstract description 20
- 210000004177 elastic tissue Anatomy 0.000 claims abstract description 14
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 13
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000741 silica gel Substances 0.000 claims abstract description 6
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims description 50
- 230000007704 transition Effects 0.000 claims description 29
- 239000003963 antioxidant agent Substances 0.000 claims description 21
- 230000003078 antioxidant effect Effects 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 19
- 239000003822 epoxy resin Substances 0.000 claims description 17
- 229920000647 polyepoxide Polymers 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 12
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 10
- 239000012752 auxiliary agent Substances 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 9
- 229940124543 ultraviolet light absorber Drugs 0.000 claims description 9
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 9
- 229920006465 Styrenic thermoplastic elastomer Polymers 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000005060 rubber Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000004611 light stabiliser Substances 0.000 claims description 6
- 239000000395 magnesium oxide Substances 0.000 claims description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 6
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 6
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 claims description 6
- 230000003449 preventive effect Effects 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 229920006030 multiblock copolymer Polymers 0.000 claims description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- OSDWBNJEKMUWAV-UHFFFAOYSA-N Allyl chloride Chemical compound ClCC=C OSDWBNJEKMUWAV-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 3
- 150000001412 amines Chemical group 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical class O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 238000010556 emulsion polymerization method Methods 0.000 claims description 3
- 125000003700 epoxy group Chemical group 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical group OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 3
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- -1 polyoxyethylene groups Polymers 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 150000003512 tertiary amines Chemical class 0.000 claims description 3
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 claims description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- XTTGYFREQJCEML-UHFFFAOYSA-N tributyl phosphite Chemical compound CCCCOP(OCCCC)OCCCC XTTGYFREQJCEML-UHFFFAOYSA-N 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 239000002585 base Substances 0.000 claims 1
- 239000013013 elastic material Substances 0.000 abstract description 6
- 238000012856 packing Methods 0.000 abstract 3
- 230000000052 comparative effect Effects 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229920005862 polyol Polymers 0.000 description 3
- 150000003077 polyols Chemical class 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 125000001165 hydrophobic group Chemical group 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
- B24B37/20—Lapping pads for working plane surfaces
- B24B37/22—Lapping pads for working plane surfaces characterised by a multi-layered structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
- B24B37/20—Lapping pads for working plane surfaces
- B24B37/24—Lapping pads for working plane surfaces characterised by the composition or properties of the pad materials
-
- 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
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0072—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/001—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as supporting member
- B24D3/002—Flexible supporting members, e.g. paper, woven, plastic materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
-
- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses an elastic porous polishing white pad for edging a display screen and a production process thereof, comprising a core elastic layer, a white pad connecting sleeve, an embedded groove, a polishing white pad, a nylon outer cutting sleeve and a nylon cutting sleeve seat, wherein the core elastic layer adopts an elastic material taking a styrene thermoplastic elastomer and a polyester thermoplastic elastomer as main materials, is mainly used for improving the overall elasticity and softness of the white pad, simultaneously saves materials required for processing the white pad, and is mainly divided into a high elastic layer, a transitional packing layer, a polishing surface layer and a polishing surface layer by a second polishing white pad part, wherein the transitional packing layer adopts nitrile rubber, acrylonitrile, polyurethane and silica gel with higher elasticity as main materials, the upper side and the lower side of the transitional packing layer are respectively coated with the high elastic layer and the polishing surface layer which are mainly made of styrene-butadiene rubber and polyurethane elastic fibers, and the polishing surface layer is pressed above the polishing surface layer, so that the polishing and polishing capability of the polishing surface layer are ensured, and the elasticity and the softness of the polishing surface layer are improved.
Description
Technical Field
The invention relates to the technical field of white pads, in particular to an elastic porous polishing white pad for edging a display screen and a production process thereof.
Background
The white pad is used for polishing, and is formed by mutually overlapping composite materials, and comprises a polishing pad, an adhesive layer and a supporting layer, wherein the adhesive layer is uniformly coated on the upper surface of the supporting layer, the polishing pad is covered on the lower surface of the adhesive layer and is tightly pressed, the polishing pad, the adhesive layer and the supporting layer are overlapped and fixed, and then an elastic micropore structure is formed on the white pad by adopting a stamping device.
The patent number CN202010568253.4 provides a polishing pad material and a polishing pad, wherein the polyol containing hydrophobic groups is adopted, so that the hydrophobic function of the polyol can be utilized, the hydrophobicity of the polishing pad material is improved, the polishing pad material is not easy to combine with water molecules in polishing slurry, the friction force of the water molecules and abrasives on the polishing pad material under the action of external driving force is reduced, the abrasion loss of the polishing pad is reduced, the service life of the polishing pad is prolonged, in addition, the polishing pad material obtained after the reaction of isocyanate and the polyol containing hydrophobic groups has a netlike space structure, the polishing pad material has good elasticity, the elasticity of the polishing pad material is increased, the corresponding hardness is reduced, and when the polishing pad material is used for flattening the surface of a wafer, the scratches on the surface of the wafer can be reduced, and the surface performance of the wafer is improved.
The above patent has the following problems:
1. when the edge grinding operation is performed on the display screen, the existing polishing pad is poor in elasticity and small in bending angle, so that the polishing pad cannot grind other angles of corners of the display screen;
2. since the polishing pad generally has a certain thickness, the inner center of the polishing pad cannot be practically applied to the polishing operation, and the overall elasticity and softness of the white pad are easily affected.
Disclosure of Invention
The invention aims to provide an elastic porous polishing white pad for edging a display screen and a production process thereof, wherein the polishing white pad is mainly divided into a core elastic layer and a polishing white pad, the core elastic layer adopts an elastic material with a styrene thermoplastic elastomer and a polyester thermoplastic elastomer as main bodies, the elastic material is mainly used for improving the overall elasticity and softness of the white pad, meanwhile, materials required for processing the white pad are saved, the polishing white pad is mainly divided into a high elastic layer, a transition filler layer, a polishing surface layer and a polishing surface layer, the transition filler layer is the core part of the polishing white pad, and the high elastic layer and the polishing surface layer which are mainly made of butadiene-acrylonitrile rubber, acrylonitrile, polyurethane and silica gel are respectively coated on the upper side and the lower side of the transition filler layer, and the polishing surface layer is pressed above the polishing surface layer, so that the polishing capability of the polishing white pad is ensured, the elasticity and the softness of the polishing white pad are improved, and the problems in the background technology are solved.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a white pad of polishing of elasticity for display screen edging, includes core elastic layer, white pad adapter sleeve, interior caulking groove, dull polish white pad, nylon outer cutting ferrule and nylon cutting ferrule seat, the upper and lower both sides of core elastic layer are equipped with the white pad adapter sleeve respectively, the inside of white pad adapter sleeve is equipped with interior caulking groove, install dull polish white pad in the interior caulking groove, the core elastic layer is with the outer cutting ferrule of side-mounting nylon of white pad adapter sleeve, nylon cutting ferrule seat is installed to the bottom of the outer cutting ferrule of nylon.
Preferably, the frosted white pad comprises a high elastic layer, a transition filler layer, a polishing surface layer, a frosted surface layer and a through hole, wherein the transition filler layer is arranged on the upper side of the high elastic layer, the polishing surface layer is arranged on the upper side of the transition filler layer, the frosted surface layer is arranged on the upper side of the polishing surface layer, the through holes are respectively formed in the high elastic layer, the transition filler layer and the polishing surface layer, and the high elastic layer, the transition filler layer, the polishing surface layer and the frosted surface layer are sequentially connected in a composite mode.
Preferably, the core elastic layer and the white pad connecting sleeve are prepared from the following raw materials in parts by weight:
80 parts of a styrenic thermoplastic elastomer;
40-100 parts of polyester thermoplastic elastomer;
2 parts of an antioxidant;
6 parts of wear-resistant auxiliary agent;
22 parts of nano filler;
wherein the nano filler is prepared by mixing nano modified montmorillonite and nano titanium dioxide material according to a ratio of 1:1, granulating by granulating equipment, the particle size range of the prepared nano filler particles is 1-80nm, the wear-resistant auxiliary agent is ultrafine silicon carbide, and the antioxidant is phosphite antioxidant.
Preferably, the styrene thermoplastic elastomer is a multiblock copolymer prepared from styrene, isoprene and 3-chloropropene, and the molecular weight of the multiblock copolymer is 20-36 ten thousand.
Preferably, the polyester thermoplastic elastomer is in a double-layer mode, the upper layer is made of thermoplastic polyurethane elastomer rubber material, the lower layer is made of thermoplastic polyester elastomer rubber, and the two materials are combined into a whole through composite pressing.
Preferably, the high-elasticity layer and the polishing surface layer are prepared from the following raw materials in parts by weight:
30-50 parts of styrene butadiene rubber;
10-15 parts of polyurethane elastic fiber;
2 parts of triethanolamine;
2 parts of triethylene diamine;
2 parts of magnesium oxide;
3 parts of auxiliary preparation;
the auxiliary preparation comprises an antioxidant, a light stabilizer, an ultraviolet light absorber and a mildew preventive, wherein the antioxidant adopts tributyl phosphite, the ultraviolet light absorber adopts 2-hydroxy-4-n-octoxybenzophenone, and the antioxidant, the light stabilizer, the ultraviolet light absorber and the mildew preventive are mixed according to the proportion of 3:2:1:1.
Preferably, the transition filler layer is formed by mixing and pressing nitrile rubber, acrylonitrile, polyurethane and a silica gel material, wherein the nitrile rubber is a copolymer formed by polymerizing acrylonitrile and butadiene monomers, and is mainly polymerized by a low-temperature emulsion polymerization method, and the content of the acrylonitrile is 36-41%.
Preferably, the frosted surface layer comprises the following raw materials in parts by weight:
20 parts of water-based epoxy resin glue;
10 parts of polyurethane;
3 parts of auxiliary filler;
5 parts of abrasive particles;
wherein the filler is a mixture of organic silicon resin, silicon micropowder and graphene materials, the frosted particles are a mixture of titanium dioxide, zinc oxide, calcium carbonate and aluminum oxide, and the frosted particles are granulated by a granulator, and the particle size range of the frosted particles is 5-10 mu m.
Preferably, the water-based epoxy resin adhesive is prepared by linking acrylic acid in a branch in an epoxy resin molecular chain, wherein the epoxy resin molecular chain contains tertiary amine or quaternary amine alkali or is connected with a hydrophilic polyoxyethylene group and ensures that the epoxy resin molecular chain contains two or more epoxy groups.
The invention provides another technical scheme that: a production process of an elastic porous polishing white pad for edging a display screen comprises the following steps:
step one: adding a styrene thermoplastic elastomer, a polyester thermoplastic elastomer, an antioxidant, a wear-resistant auxiliary agent and a nano filler into a high-speed mixer for mixing, performing melt mixing at 180-200 ℃, adding the melt into a die through a screw extruder, and cooling and solidifying to obtain a core elastic layer and a white pad connecting sleeve;
step two: mixing styrene-butadiene rubber, polyurethane elastic fiber, triethanolamine, triethylene diamine, magnesium oxide and auxiliary preparation according to a proportion, controlling the mixing temperature at 100-160 ℃, respectively coating the mixed substances on the upper side and the lower side of the transition filler layer, and cooling and solidifying to obtain a high-elasticity layer and a polished surface layer;
step three: mixing the aqueous epoxy resin adhesive, polyurethane and auxiliary filler according to a proportion, controlling the mixing temperature to be 120-160 ℃, uniformly stirring, standing for 80min, uniformly scattering the frosted particles on the surface of the mixed substance, and cooling and solidifying to obtain a frosted surface layer;
step four: combining the high-elasticity layer, the transition filler layer and the polishing surface layer by using composite pressing equipment, forming through holes on the high-elasticity layer, the transition filler layer and the polishing surface layer, placing the frosted surface layer above the polishing surface layer after the through holes are formed, and obtaining the frosted white pad after composite pressing;
step five: combining the core elastic layer with the white pad connecting sleeve, combining and fixing the core elastic layer with the white pad connecting sleeve by using a nylon outer clamping sleeve and a nylon clamping sleeve seat, and embedding the frosted white pad into the white pad connecting sleeve to obtain the porous polishing white pad.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the elastic porous polishing white pad for edging the display screen and the production process thereof, in the prior art, when the edging operation of the display screen is performed, as the elasticity of the existing polishing pad is poor and the bending angle is smaller, the polishing pad cannot polish other angles of corners of the display screen, the polishing white pad is mainly divided into a core elastic layer and a polishing white pad, wherein the core elastic layer is made of an elastic material mainly comprising a styrene thermoplastic elastomer and a polyester thermoplastic elastomer, the elastic material is mainly used for improving the overall elasticity and softness of the white pad, the transition filler layer is a core part of the polishing white pad, and the upper side and the lower side of the transition filler layer are respectively coated with a high elastic layer and a polishing surface layer which are mainly made of styrene-butadiene rubber and polyurethane elastic fibers, so that the bending angle is improved, and the edging operation of the display screen is facilitated;
2. according to the elastic porous polishing white pad for the edging of the display screen and the production process thereof, in the prior art, the polishing pad usually has a certain thickness, the inner center of the white pad cannot be practically applied to polishing operation, meanwhile, the overall elasticity and softness of the polishing pad are easily affected, the core elastic layer is arranged at the center of the elastic layer and is mainly used for improving the overall elasticity and softness of the white pad, and the polishing white pad for polishing is distributed on the upper side and the lower side of the core elastic layer, so that the overall thickness of the polishing part of the white pad is effectively weakened, the material of the polishing part of the white pad is effectively saved, and the elasticity and softness of the white pad are optimized.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic side cross-sectional view of the present invention;
FIG. 3 is an enlarged schematic view of the structure at A of the present invention;
FIG. 4 is a schematic view of a partial cross-sectional structure of a frosted white pad of the present invention;
fig. 5 is a flow chart of the preparation process of the invention.
In the figure: 1. a core elastic layer; 2. a white pad connecting sleeve; 3. an embedded groove; 4. a frosted white pad; 41. a high elastic layer; 42. a transitional filler layer; 43. polishing the surface layer; 44. a frosted surface layer; 45. a through hole; 5. nylon outer cutting ferrule; 6. nylon clamping sleeve seat.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
referring to fig. 1-3, an elastic porous polishing white pad for edging a display screen comprises a core elastic layer 1, a white pad connecting sleeve 2, an embedded groove 3, a polishing white pad 4, a nylon outer clamping sleeve 5 and a nylon clamping sleeve seat 6, wherein the upper side and the lower side of the core elastic layer 1 are respectively provided with the white pad connecting sleeve 2, the embedded groove 3 is arranged in the white pad connecting sleeve 2, the polishing white pad 4 is arranged in the embedded groove 3, the polishing white pad 4 is a core polishing part, the nylon outer clamping sleeve 5 is arranged on the side surface of the core elastic layer 1 and the white pad connecting sleeve 2, the nylon clamping sleeve seat 6 is arranged at the bottom of the nylon outer clamping sleeve 5, and the nylon outer clamping sleeve 5 and the nylon clamping sleeve seat 6 are combined to connect the core elastic layer 1 and the white pad connecting sleeve 2 into a whole.
Referring to fig. 4, the frosted white pad 4 includes a high elastic layer 41, a transition filler layer 42, a polishing surface layer 43, a frosted surface layer 44 and a through hole 45, wherein the transition filler layer 42 is disposed on the upper side of the high elastic layer 41, the transition filler layer 42 is formed by mixing and pressing nitrile rubber, acrylonitrile, polyurethane and silica gel materials, the nitrile rubber is a copolymer formed by polymerizing acrylonitrile and butadiene monomers, the nitrile rubber is mainly polymerized by a low-temperature emulsion polymerization method, the acrylonitrile content is 36% -41%, the polishing surface layer 43 is disposed on the upper side of the transition filler layer 42, the frosted surface layer 44 is disposed on the upper side of the polishing surface layer 44, the through hole 45 is disposed on the high elastic layer 41, the transition filler layer 42 and the polishing surface layer 43, and the high elastic layer 41, the transition filler layer 42, the polishing surface layer 43 and the frosted surface layer 44 are sequentially in a compound connection.
The core elastic layer 1 and the white pad connecting sleeve 2 are prepared from the following raw materials in parts by weight:
80 parts of a styrenic thermoplastic elastomer;
80 parts of polyester thermoplastic elastomer;
2 parts of an antioxidant;
6 parts of wear-resistant auxiliary agent;
22 parts of nano filler;
the nano filler is prepared by mixing nano modified montmorillonite and nano titanium dioxide materials according to a ratio of 1:1, granulating the mixture by granulating equipment, wherein the particle size range of the prepared nano filler particles is 1-80nm, the wear-resistant auxiliary agent is ultrafine silicon carbide, the antioxidant is phosphite antioxidant, the styrene thermoplastic elastomer is a multiblock copolymer prepared from styrene, isoprene and 3-chloropropene, the molecular weight of the styrene thermoplastic elastomer is 20-36 ten thousand, the polyester thermoplastic elastomer is in a double-layer mode, the upper layer is a thermoplastic polyurethane elastomer rubber material, and the lower layer is a thermoplastic polyester elastomer rubber, and the two materials are combined into a whole through composite pressing.
The high elastic layer 41 and the polishing surface layer 43 are prepared from the following raw materials in parts by weight:
40 parts of styrene-butadiene rubber;
10 parts of polyurethane elastic fiber;
2 parts of triethanolamine;
2 parts of triethylene diamine;
2 parts of magnesium oxide;
3 parts of auxiliary preparation;
the auxiliary preparation comprises an antioxidant, a light stabilizer, an ultraviolet light absorber and a mildew preventive, wherein the antioxidant adopts tributyl phosphite, the ultraviolet light absorber adopts 2-hydroxy-4-n-octoxybenzophenone, and the antioxidant, the light stabilizer, the ultraviolet light absorber and the mildew preventive are mixed according to the proportion of 3:2:1:1.
The frosting layer 44 comprises the following raw materials in parts by weight:
20 parts of water-based epoxy resin glue;
10 parts of polyurethane;
3 parts of auxiliary filler;
5 parts of abrasive particles;
wherein the filler is a mixture of organic silicon resin, silicon micropowder and graphene materials, the frosted particles are a mixture of titanium dioxide, zinc oxide, calcium carbonate and aluminum oxide, and are granulated by a granulator, the range of particle size ranges from 5 μm to 10 μm, and the water-based epoxy resin glue is prepared by connecting acrylic acid and tertiary amine or quaternary amine alkali contained in an epoxy resin molecular chain in a branched way or connecting hydrophilic polyoxyethylene groups on the epoxy resin molecular chain and ensuring that the epoxy resin molecular chain contains two or more epoxy groups.
Referring to fig. 5, in order to better demonstrate the production process of the elastic porous polishing white pad for edging a display screen, the embodiment now provides a production process of the elastic porous polishing white pad for edging a display screen, which comprises the following steps:
step one: adding a styrene thermoplastic elastomer, a polyester thermoplastic elastomer, an antioxidant, a wear-resistant auxiliary agent and a nano filler into a high-speed mixer for mixing, performing melt mixing at 180-200 ℃, adding the melt into a die through a screw extruder, and cooling and solidifying to obtain a core elastic layer 1 and a white pad connecting sleeve 2;
step two: mixing styrene-butadiene rubber, polyurethane elastic fiber, triethanolamine, triethylene diamine, magnesium oxide and auxiliary preparation according to a proportion, controlling the mixing temperature to be 100-160 ℃, respectively coating the mixed substances on the upper side and the lower side of the transition filler layer 42, and cooling and solidifying to obtain a high elastic layer 41 and a polishing surface layer 43;
step three: mixing the aqueous epoxy resin adhesive, polyurethane and auxiliary filler according to a proportion, controlling the mixing temperature to be 120-160 ℃, uniformly stirring, standing for 80min, uniformly scattering the frosted particles on the surface of the mixed substance, and cooling and solidifying to obtain a frosted surface layer;
step four: combining the high-elasticity layer 41, the transition filler layer 42 and the polishing surface layer 43 by using a composite pressing device, forming through holes 45 on the high-elasticity layer 41, the transition filler layer 42 and the polishing surface layer 43, placing a frosted surface layer 44 above the polishing surface layer 43 after the forming of the through holes 45 is finished, and obtaining the frosted white pad 4 after the composite pressing is finished;
step five: the core elastic layer 1 is combined with the white pad connecting sleeve 2, the nylon outer clamping sleeve 5 and the nylon clamping sleeve seat 6 are used for combining and fixing, and the frosted white pad 4 is nested in the white pad connecting sleeve 2, so that the porous polishing white pad can be obtained.
Embodiment two:
the difference between the present embodiment and the first embodiment is that the material ratios of the styrene thermoplastic elastomer and the polyester thermoplastic elastomer in the raw materials used in the core elastic layer 1 and the white pad connecting sleeve 2 are different, and the weight percentage ratios of the raw materials used in the core elastic layer 1 and the white pad connecting sleeve 2 in the present embodiment are as follows:
80 parts of a styrenic thermoplastic elastomer;
40 parts of polyester thermoplastic elastomer;
2 parts of an antioxidant;
6 parts of wear-resistant auxiliary agent;
22 parts of nano filler;
wherein the weight ratio between the styrene thermoplastic elastomer and the polyester thermoplastic elastomer is changed to 2:1, namely the styrene thermoplastic elastomer is taken as a preparation main body, and the polyester thermoplastic elastomer is taken as a filling body.
Embodiment III:
the difference between this embodiment and the first embodiment is that the proportions of the components of the raw materials for the high elastic layer 41 and the polishing surface layer 43 in parts by weight are different, and the proportions of the components of the raw materials for the high elastic layer 41 and the polishing surface layer 43 in this embodiment are as follows:
30 parts of styrene-butadiene rubber;
15 parts of polyurethane elastic fiber;
2 parts of triethanolamine;
2 parts of triethylene diamine;
2 parts of magnesium oxide;
3 parts of auxiliary preparation;
wherein the ratio of the styrene-butadiene rubber to the polyurethane elastic fiber is increased, thereby reducing the overall elasticity of the integrally prepared high-elasticity layer 41 and polishing surface layer 43 and increasing the overall softness thereof.
Comparative example one:
the difference between the first comparative example and the first example is that 80 parts of the polyester-based thermoplastic elastomer is used in the core elastic layer 1 and the white mat connecting sleeve 2, and the addition amount of the styrene-based thermoplastic elastomer is reduced to 40 parts, so that the content ratio of the styrene-based thermoplastic elastomer to the polyester-based thermoplastic elastomer is 1:2.
Comparative example two:
the difference between this comparative example two and example one is that 40 parts of styrene-butadiene rubber was added to the raw materials for preparing the high elastic layer 41 and the polishing surface layer 43, and polyurethane elastic fiber was not added.
The contents of examples 1-3 were tested for elasticity and softness, wherein in the elasticity test, the same force was applied to the center of the three types of white pads to check the amount of positional deviation of the center portion after the force was applied, and in the softness test, the force was applied to one end of the white pad, and after the force was received and bending occurred, the bending angle was changed, and specific data are shown in the following table:
as can be seen from the above table, by changing the ratio of the styrenic thermoplastic elastomer to the polyester thermoplastic elastomer, the overall elastic value of the white mat can be changed, wherein the elasticity is optimal when the styrenic thermoplastic elastomer is actually selected as the main raw material; the overall softness of the white pad can be effectively optimized by changing the ratio of the styrene-butadiene rubber to the polyurethane elastic fiber, wherein the softness is optimal when the ratio of the styrene-butadiene rubber to the polyurethane elastic fiber is 2:1.
As can be seen from the comparison of the first and the first comparative examples, when the ester-based thermoplastic elastomer is selected as the main material, the force is applied to the center of the white pad, and the center offset is greatly reduced, so that the white pad prepared by using the polyester-based thermoplastic elastomer as the main material in the first comparative example has the elasticity inferior to that in the first comparative example, and thus, the first and the second examples are superior to the first comparative example in the aspect of elasticity; as can be seen from the comparison of the first and second examples, the smoothness and softness of the whole white pad can be effectively improved by adding polyurethane elastic fiber during the preparation of the high elastic layer 41 and the polishing surface layer 43 of the white pad, and thus, the first and third examples are superior to the second example in softness.
To sum up: the invention relates to an elastic porous polishing white pad for edging a display screen and a production process thereof, wherein the polishing white pad is mainly divided into a core elastic layer 1 and a polishing white pad 4, wherein the core elastic layer 1 is made of an elastic material with a styrene thermoplastic elastomer and a polyester thermoplastic elastomer as main bodies, is mainly used for improving the overall elasticity and softness of the white pad, simultaneously saving materials required for processing the white pad, and the polishing white pad 4 is mainly divided into a high elastic layer 41, a transition filler layer 42, a polishing surface layer 43 and a polishing surface layer 44, wherein the transition filler layer 42 is a core part of the polishing white pad 4, and adopts nitrile rubber, acrylonitrile, polyurethane and silica gel with higher elasticity as main materials, the high elastic layer 41 and the polishing surface layer 43 with styrene-butadiene rubber and polyurethane elastic fibers as main materials are respectively coated on the upper side and the lower side of the transition filler layer 42, and the polishing surface layer 44 is pressed above the polishing surface layer 43, so that the polishing capability of the polishing white pad is ensured, and the elasticity and softness of the polishing white pad are improved.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should be covered by the protection scope of the present invention by making equivalents and modifications to the technical solution and the inventive concept thereof.
Claims (5)
1. The utility model provides a white pad of polishing of elasticity is porous for display screen edging, includes core elastic layer (1), white pad adapter sleeve (2), interior caulking groove (3), dull polish white pad (4), nylon outer cutting ferrule (5) and nylon cutting ferrule seat (6), its characterized in that: the polishing pad comprises a core elastic layer (1), wherein a white pad connecting sleeve (2) is arranged on the upper side and the lower side of the core elastic layer (1), an inner embedded groove (3) is formed in the white pad connecting sleeve (2), a frosted white pad (4) is arranged in the inner embedded groove (3), a nylon outer clamping sleeve (5) is arranged on the side face of the core elastic layer (1) and the white pad connecting sleeve (2), a nylon clamping sleeve seat (6) is arranged at the bottom of the nylon outer clamping sleeve (5), the frosted white pad (4) comprises a high elastic layer (41), a transition filler layer (42), a polishing surface layer (43), a frosted surface layer (44) and a through hole (45), the upper side of the high elastic layer (41) is provided with a polishing surface layer (43), and the upper side of the polishing surface layer (43) is provided with a frosted surface layer (44), and the high elastic layer (41), the transition filler layer (42) and the polishing surface layer (43) are respectively provided with the through hole (45), and the high elastic layer (41), the polishing surface layer (42), the polishing surface layer (43) and the frosted surface layer (44) are sequentially connected with each other;
the core elastic layer (1) and the white pad connecting sleeve (2) are prepared from the following raw materials in parts by weight:
80 parts of a styrenic thermoplastic elastomer;
40-100 parts of polyester thermoplastic elastomer;
2 parts of an antioxidant;
6 parts of wear-resistant auxiliary agent;
22 parts of nano filler;
wherein the nano filler is prepared by mixing nano modified montmorillonite and nano titanium dioxide material according to a ratio of 1:1, granulating by granulating equipment, the particle size range of the prepared nano filler particles is 1-80nm, the wear-resistant auxiliary agent is ultrafine silicon carbide, and the antioxidant is phosphite antioxidant;
the high-elasticity layer (41) and the polishing surface layer (43) are prepared from the following raw materials in parts by weight:
30-50 parts of styrene butadiene rubber;
10-15 parts of polyurethane elastic fiber;
2 parts of triethanolamine;
2 parts of triethylene diamine;
2 parts of magnesium oxide;
3 parts of auxiliary preparation;
wherein the auxiliary preparation comprises an antioxidant, a light stabilizer, an ultraviolet light absorber and a mildew preventive, wherein the antioxidant adopts tributyl phosphite, the ultraviolet light absorber adopts 2-hydroxy-4-n-octoxybenzophenone, and the antioxidant, the light stabilizer, the ultraviolet light absorber and the mildew preventive are prepared according to the following weight ratio of 3:2:1:1, mixing and proportioning in proportion;
the frosted surface layer (44) comprises the following raw materials in parts by weight:
20 parts of water-based epoxy resin glue;
10 parts of polyurethane;
3 parts of auxiliary filler;
5 parts of abrasive particles;
wherein the filler is a mixture of organic silicon resin, silicon micropowder and graphene materials, the frosted particles are a mixture of titanium dioxide, zinc oxide, calcium carbonate and aluminum oxide, and the frosted particles are granulated by a granulator, and the particle size range of the frosted particles is 5-10 mu m.
2. An elastic porous polishing white pad for edging a display screen as claimed in claim 1, wherein the styrenic thermoplastic elastomer is a multiblock copolymer prepared from styrene, isoprene and 3-chloropropene, and has a molecular weight of 20-36 ten thousand.
3. The elastic porous polishing white pad for edging a display screen according to claim 1, wherein the polyester thermoplastic elastomer is in a double-layer mode, the upper layer is made of thermoplastic polyurethane elastomer rubber material, the lower layer is made of thermoplastic polyester elastomer rubber, and the two materials are combined into a whole through composite pressing.
4. An elastic porous polishing white pad for edging a display screen according to claim 1, characterized in that the transition filler layer (42) is formed by mixing and pressing nitrile rubber, acrylonitrile, polyurethane and a silica gel material, the nitrile rubber is a copolymer formed by polymerizing acrylonitrile and butadiene monomers, the copolymer is polymerized by adopting a low-temperature emulsion polymerization method, and the content of the acrylonitrile is 36% -41%.
5. The elastic porous polishing white pad for edging a display screen according to claim 1, wherein the aqueous epoxy resin adhesive is formed by branching and linking acrylic acid in an epoxy resin molecular chain, wherein the epoxy resin molecular chain contains tertiary amine or quaternary amine base or is connected with hydrophilic polyoxyethylene groups and ensures that the epoxy resin molecular chain contains two or more epoxy groups.
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