CN107344336B - Composite substrate polishing grinding tool and preparation method thereof - Google Patents

Composite substrate polishing grinding tool and preparation method thereof Download PDF

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Publication number
CN107344336B
CN107344336B CN201710606175.0A CN201710606175A CN107344336B CN 107344336 B CN107344336 B CN 107344336B CN 201710606175 A CN201710606175 A CN 201710606175A CN 107344336 B CN107344336 B CN 107344336B
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base material
water
composite base
prepared
adhesive
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CN107344336A (en
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方红
卞振伟
杨伟
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DONGGUAN GOLDEN SUN ABRASIVES CO LTD
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DONGGUAN GOLDEN SUN ABRASIVES CO LTD
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/21—Anti-static
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance

Abstract

The invention relates to the technical field of grinding and polishing processing, in particular to a composite base material polishing grinding tool and a preparation method thereof, wherein the composite base material polishing grinding tool comprises a composite base material and an abrasive material adhered to the composite base material, the composite base material is formed by compounding a TPU film and a PET film through a modified adhesive, and the modified adhesive is prepared from 100 parts of modified polyurethane resin, 10 to 20 parts of a curing agent, 5 to 30 parts of a filler and 10 to 40 parts of an organic solvent. Compared with the prior art, the invention utilizes the self-made modified adhesive and adopts a transfer printing bonding method to firmly bond the high-elasticity TPU film and the high-strength PET film together, so that the composite base material has higher mechanical strength, heat resistance and wear resistance, and excellent elasticity and flexibility, and the manufactured polishing grinding tool meets the requirements of precise polishing of paint surface repairing, irregular surfaces, curved surfaces and the like.

Description

Composite substrate polishing grinding tool and preparation method thereof
Technical Field
The invention relates to the technical field of grinding and polishing, in particular to a composite base material polishing grinding tool and a preparation method thereof.
Background
Polishing is the finishing of a workpiece surface with a polishing tool and abrasive particles or other polishing media. For some products with high surface precision requirements, the products must be correspondingly polished and ground, and especially for products with irregular shapes or curved surfaces (such as automobile manufacturing and repairing, 3C electronic industry), the traditional polishing abrasive tool cannot meet the requirements, and the precision polishing abrasive tool must be used for polishing the surfaces of the products, such as polishing abrasive discs, polishing sheets and the like. In the prior art, the precision polishing grinding tool is formed by compounding an abrasive material with a polishing function and a high polymer base material, for example, an invention patent application (publication number is CN 105313033A) applied by the inventor discloses an elastic TPU polishing composite film. However, although the TPU substrate improves the elasticity and flexibility of the polishing abrasive tool, the mechanical strength, the high temperature resistance and the friction resistance of the TPU substrate are insufficient, and in order to make the polishing abrasive tool have the above functions, the inventors try to combine several polymer materials with the above functions, but experiments show that the TPU and other different polymer materials are polymer materials which are very difficult to bond, and particularly, the flexibility of the TPU is high, so that the adhesion difficulty between the TPU and other polymer materials is very high, and the performance of the combined polymer substrate is unstable, and the requirement of high-precision polishing cannot be met. This is a key technology that is currently difficult to overcome; in addition, the existing polishing grinding tool has the defects that due to insufficient adhesive force between the grinding material and the base material, sand grains fall off during polishing, and grinding scraps are agglomerated to cause blockage, so that the problems that the quality of the surface of a polished product is not up to the standard, the service life of the grinding tool is short, and the like, such as scratches, are generated, and therefore the existing polishing grinding tool cannot meet the requirements of precision polishing such as irregular shapes or curved surfaces.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a composite substrate polishing abrasive tool having excellent mechanical strength and thermal and wear resistance as well as superior elasticity and flexibility, and a method for preparing the same.
In order to realize the purpose, the invention provides the following technical scheme:
the composite base material polishing grinding tool comprises a composite base material and an abrasive adhered to the composite base material, wherein the composite base material is formed by compounding a TPU film and a PET film through a modified adhesive;
the modified adhesive is prepared from the following raw materials in parts by weight:
modified polyurethane resin 100
10-20 parts of curing agent;
fillers 5 to 30
10-40 parts of organic solvent.
Wherein the modified polyurethane resin is prepared from polyurethane resin, epoxy resin and an accelerant according to the weight ratio of the polyurethane resin: epoxy resin: accelerator =100:20 to 40:1 to 5.
Wherein the curing agent is a model L-101 curing agent, triethylene diamine, TDI or polyamide 650;
the filler is any one of talcum powder, calcium carbonate and titanium dioxide;
the organic solvent is at least one of ethyl acetate, xylene and butanone.
Wherein the polyurethane resin is at least one of polyurethane resins with the types of N-380, KU-318 and KU-315;
the epoxy resin is at least one of epoxy resin E-44, epoxy resin E-51 and epoxy resin E-20;
the accelerator is at least one of accelerator DMP-30, accelerator EP-184 and accelerator K-61B.
The surface of the TPU film of the composite base material is sequentially coated with a primer layer, a compound adhesive layer and an anti-blocking coating.
The primer layer is prepared from polyurethane resin, a curing agent and an organic solvent according to the weight ratio: curing agent: organic solvent =100:20 to 30: 10-30 parts of a raw material;
the polyurethane resin is any one of polyurethane resins with the types of N-380, KU-318 and KU-315;
the curing agent is any one of a model L-101 curing agent, triethylene diamine, TDI and polyamide 650;
the organic solvent is at least one of ethyl acetate, xylene and butanone.
Wherein the compound adhesive layer is prepared from water-based thermosetting resin, inorganic filling materials and a flatting agent according to the weight ratio: inorganic filler: leveling agent =100:20 to 40:0.2 to 1.0;
the water-based thermosetting resin is urea-formaldehyde resin or water-soluble phenolic resin;
the inorganic filler is any one of talcum powder, calcium carbonate and titanium dioxide;
the leveling agent is a silane or acrylic leveling agent.
The anti-blocking coating is prepared from a water-based anti-blocking coating, a water-based adhesive and an antistatic agent according to the weight ratio: water-based adhesive: antistatic agent =100: 0.5 to 2.0, wherein:
the water-based anti-blocking coating is prepared from stearate, inorganic filler and emulsifier according to the weight ratio: inorganic filler: emulsifier =100:20 to 40: 1-5;
the water-based adhesive is any one of acrylic resin, latex and water-based urea resin;
the antistatic agent is alkylamine or GMS.
Wherein the stearate is any one of calcium stearate, zinc stearate and magnesium stearate;
the inorganic filler is any one of talcum powder, calcium carbonate and titanium dioxide;
the emulsifier is any one of fatty acid salt, alkyl sulfate and polyether emulsifier.
The invention also provides a preparation method of the composite base material polishing grinding tool, which comprises the following steps:
step a, preparing a modified adhesive:
a1, according to the formula amount, firstly adding polyurethane resin into a reaction kettle, adding epoxy resin under a stirring state, then heating to 55-65 ℃, reacting for 1.5-2.5 hours, then cooling to 20-30 ℃, then adding an accelerator, and uniformly stirring to obtain modified polyurethane resin;
a2, adding a curing agent into the modified polyurethane resin prepared in the step a1 under a stirring state according to the formula amount, then adding a filler, uniformly stirring, finally adding an organic solvent, adjusting to a proper viscosity, and filtering to obtain the modified adhesive for later use;
step b, preparing a composite base material:
b1, compounding the TPU film and release paper;
b2, coating the modified adhesive prepared in the step a on the surface of the PET film at the temperature of 20-30 ℃, and then stripping the TPU film from the release paper to transfer and adhere the TPU film to the PET film;
b3, heating to cure the modified adhesive to obtain the composite base material;
step c, bonding the abrasive with the composite base material:
c1, sequentially adding a curing agent and polyurethane resin into a batching barrel according to the formula amount, uniformly stirring, adding an organic solvent to adjust to proper viscosity, and filtering to obtain a primer for later use;
c2, sequentially adding the water-based thermosetting resin, the inorganic filling material and the flatting agent into a batching barrel according to the formula amount, uniformly stirring, adjusting the mixture to a proper viscosity by using water, filtering to obtain a compound adhesive, and storing the compound adhesive to be below 10 ℃ for later use;
c3, sequentially adding stearate and inorganic filler into a batching barrel according to the formula amount, uniformly stirring, adding an emulsifier, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the water-based anti-blocking coating; then sequentially adding the prepared water-based anti-clogging coating, the water-based adhesive and the antistatic agent into a mixing barrel, uniformly stirring, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the anti-clogging coating;
c4, uniformly coating the primer prepared in the step c1 on the surface of the TPU film in the composite base material obtained in the step b to form a primer layer, uniformly adhering the abrasive to the primer layer through electrostatic sand planting, and heating at 70-80 ℃ to dry and cure the primer layer;
c5, uniformly coating the compound adhesive prepared in the step c2 on the surface of the bottom adhesive layer to form a compound adhesive layer, and then heating at 80-90 ℃ to dry and solidify the compound adhesive layer;
and c6, uniformly coating the anti-blocking coating prepared in the step c3 on the surface of the compound adhesive layer to form an anti-blocking coating, and then heating at 90-100 ℃ to dry and solidify the anti-blocking coating, so as to obtain the composite base material polishing grinding tool.
The invention has the beneficial effects that:
compared with the prior art, the composite substrate polishing grinding tool and the preparation method thereof have the following advantages:
(1) The base material used by the composite base material polishing grinding tool is a double-layer polymer composite base material, which is formed by compounding a TPU film and a PET film through a special modified adhesive, because the TPU and the PET are both polymer materials which are difficult to bond, and the flexibility of the TPU is larger, and the attaching difficulty of the TPU and the PET is very large, the invention utilizes the self-made modified adhesive and adopts a special transfer bonding method to firmly bond the TPU film with high elasticity and the PET film with high strength, thereby leading the double-layer polymer composite base material to have higher mechanical strength, heat resistance and wear resistance, excellent elasticity and flexibility, no toxicity and no smell, and being a decomposable novel environment-friendly material, and the usable polishing grinding tool made of the composite base material can better meet the requirements of precision polishing of paint surface repair, irregular surface, curved surface and the like, and is particularly suitable for precision polishing in automobile manufacture and repair and 3C electronic industry;
(2) The anti-clogging coating used by the anti-clogging coating is a special material with good lubricating and static electricity eliminating functions, and when the polishing grinding tool is used, grinding scraps can be rapidly dispersed and do not agglomerate, so that the anti-clogging function is good, the surface quality of a polished product can be improved, scratches are reduced, and the service life of the polishing grinding tool is prolonged;
(3) The preparation method is simple, easy to operate and suitable for large-scale production.
Drawings
Fig. 1 is a schematic structural view of a composite substrate polishing abrasive tool according to the present invention.
Reference numerals are as follows:
the anti-blocking coating comprises a PET film 1, a modified adhesive 2, a TPU film 3, a primer layer 4, a compound adhesive layer 5, an anti-blocking coating 6 and an abrasive 7.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments and the accompanying drawings.
Example 1:
a composite base material polishing grinding tool is shown in figure 1 and comprises a composite base material and an abrasive 7 adhered to the composite base material, wherein the composite base material is formed by compounding a TPU film 3 and a PET film 1 through a modified adhesive 2. The surface of the TPU film 3 of the composite base material is coated with a primer layer 4, a compound adhesive layer 4 and an anti-blocking coating layer 6 in sequence.
The preparation method of the composite base material polishing grinding tool comprises the following steps:
step a, preparing a modified adhesive 2:
a1, preparing a modified polyurethane resin:
according to the following polyurethane resin: epoxy resin: accelerator =100:30:2, firstly adding the polyurethane resin into a reaction kettle, adding the epoxy resin under the stirring state, then heating to 60 ℃, reacting for 2 hours, then cooling to 20-30 ℃, then adding the accelerator, and uniformly stirring to obtain the modified polyurethane resin;
wherein the polyurethane resin is the polyurethane resin with the model number of N-380, the epoxy resin is the epoxy resin E-44, and the accelerant is the accelerant DMP-30.
a2, according to the following modified polyurethane resin: curing agent: filling agent: organic solvent =100:15:25:20, under the stirring state, firstly adding a curing agent into the modified polyurethane resin prepared in the step a1, then adding a filler, uniformly stirring, finally adding an organic solvent, adjusting to a proper viscosity, and filtering to obtain a modified adhesive 2 for later use;
wherein the curing agent is a model L-101 curing agent, the filler is talcum powder, and the organic solvent is ethyl acetate.
Step b, preparing a composite base material:
b1, compounding the TPU film 3 with release paper;
b2, coating the modified adhesive 2 prepared in the step a on the surface of the PET film 1 at the temperature of 20-30 ℃, and then stripping the TPU film 3 from release paper to transfer and adhere the TPU film 3 to the PET film 1;
b3, heating to 70 ℃ to cure the modified adhesive 2 to obtain the composite base material.
Step c, bonding the abrasive 7 with the composite base material:
c1, according to the following polyurethane resin: curing agent: organic solvent =100:25:25, sequentially adding a curing agent and polyurethane resin into a mixing barrel, uniformly stirring, adding an organic solvent to adjust to a proper viscosity, and filtering to obtain a primer for later use; wherein:
the polyurethane resin is N-380, the curing agent is L-101, and the organic solvent is ethyl acetate;
c2, according to the water-based thermosetting resin: inorganic filler: leveling agent =100:25:0.4, sequentially adding the water-based thermosetting resin, the inorganic filler and the flatting agent into a batching barrel, uniformly stirring, adjusting the mixture to a proper viscosity by using water, filtering to obtain a compound adhesive, and storing the compound adhesive below 10 ℃ for later use; wherein:
the water-based thermosetting resin is urea-formaldehyde resin, the inorganic filler is talcum powder, and the flatting agent is a silane flatting agent;
c3, according to stearate: inorganic filler: emulsifier =100:30:2, sequentially adding stearate and inorganic filler into a batching barrel, uniformly stirring, adding an emulsifier, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the water-based anti-blocking coating; then according to the water-based anti-blocking coating: water-based adhesive: antistatic agent =100:15:1, sequentially adding the prepared water-based anti-clogging coating, water-based adhesive and antistatic agent into a mixing barrel, uniformly stirring, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the anti-clogging coating; wherein:
the stearate is calcium stearate, the inorganic filler is talcum powder, the emulsifier is fatty acid salt, the water-based adhesive is acrylic resin, and the antistatic agent is alkylamine;
c4, uniformly coating the primer prepared in the step c1 on the surface of the TPU film 3 in the composite base material obtained in the step b to form a primer layer 4, uniformly adhering the abrasive 7 to the primer layer 4 through electrostatic sand planting, and heating at 75 ℃ to dry and cure the primer layer 4;
c5, uniformly coating the compound adhesive prepared in the step c2 on the surface of the primer layer 4 to form a compound adhesive layer 5, and then heating at 85 ℃ to dry and cure the compound adhesive layer 5;
and c6, uniformly coating the anti-blocking coating prepared in the step c3 on the surface of the compound adhesive layer 5 to form an anti-blocking coating 6, and then heating at 95 ℃ to dry and solidify the anti-blocking coating 6, so as to obtain the composite base material polishing grinding tool.
Example 2:
a composite base material polishing grinding tool is shown in figure 1 and comprises a composite base material and a grinding material 7 adhered to the composite base material, wherein the composite base material is formed by compounding a TPU film 3 and a PET film 1 through a modified adhesive 2. The surface of the TPU film 3 of the composite base material is coated with a primer layer 4, a compound adhesive layer 4 and an anti-blocking coating layer 6 in sequence.
The preparation method of the composite base material polishing grinding tool comprises the following steps:
step a, preparing a modified adhesive 2:
a1, preparing a modified polyurethane resin:
according to the following polyurethane resin: epoxy resin: accelerator =100:25:3, firstly adding polyurethane resin into a reaction kettle, adding epoxy resin under a stirring state, then heating to 55 ℃, reacting for 1.5 hours, then cooling to 20-30 ℃, then adding an accelerant, and uniformly stirring to obtain modified polyurethane resin;
wherein the polyurethane resin is the polyurethane resin with the model number of KU-318, the epoxy resin is the epoxy resin E-51, and the accelerant is the accelerant EP-184.
a2, according to the following modified polyurethane resin: curing agent: filling agent: organic solvent =100:18:15:30, under the stirring state, firstly adding a curing agent into the modified polyurethane resin prepared in the step a1, then adding a filler, uniformly stirring, finally adding an organic solvent, adjusting to a proper viscosity, and filtering to obtain a modified adhesive 2 for later use;
wherein, the curing agent is TDI, the filling agent is calcium carbonate, and the organic solvent is a mixture prepared from ethyl acetate and xylene according to a volume ratio of 1.
Step b, preparing a composite base material:
b1, compounding the TPU film 3 with release paper;
b2, coating the modified adhesive 2 prepared in the step a on the surface of the PET film 1 at the temperature of 20-30 ℃, and then stripping the TPU film 3 from release paper to transfer and adhere the TPU film 3 to the PET film 1;
b3, heating to 75 ℃ to cure the modified adhesive 2 to obtain a composite base material;
step c, bonding the abrasive 7 with the composite base material:
c1, according to the following polyurethane resin: curing agent: organic solvent =100:20:18, adding a curing agent and polyurethane resin into a mixing barrel in sequence, uniformly stirring, adding an organic solvent, adjusting to proper viscosity, and filtering to obtain a primer for later use; wherein:
the polyurethane resin is a polyurethane resin with a model number of KU-318, the curing agent is TDI, and the organic solvent is a mixture of ethyl acetate and xylene according to a volume ratio of 1;
c2, according to the water-based thermosetting resin: inorganic filler: leveling agent =100:30:0.8, sequentially adding the water-based thermosetting resin, the inorganic filler and the flatting agent into a batching barrel, uniformly stirring, adjusting the mixture to a proper viscosity by using water, filtering to obtain a compound adhesive, and storing the compound adhesive below 10 ℃ for later use; wherein:
the water-based thermosetting resin is water-soluble phenolic resin, the inorganic filler is calcium carbonate, and the leveling agent is an acrylic leveling agent;
c3, according to stearate: inorganic filler: emulsifier =100:25:3, sequentially adding the stearate and the inorganic filler into a batching barrel, uniformly stirring, adding an emulsifier, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the water-based anti-blocking coating; then according to the water-based anti-blocking paint: water-based adhesive: antistatic agent =100:18:1.5, sequentially adding the prepared water-based anti-clogging coating, water-based adhesive and antistatic agent into a mixing barrel, uniformly stirring, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the anti-clogging coating; wherein:
the stearate is zinc stearate, the inorganic filler is calcium carbonate, the emulsifier is alkyl sulfate, the water-based adhesive is latex, and the antistatic agent is GMS;
c4, uniformly coating the primer prepared in the step c1 on the surface of the TPU film 3 layer in the composite base material obtained in the step b to form a primer layer 4, uniformly adhering an abrasive 7 to the primer layer 4 through electrostatic sand planting, and heating at 70 ℃ to dry and solidify the primer layer 4;
c5, uniformly coating the compound glue prepared in the step c2 on the surface of the primer layer 4 to form a compound glue layer 5, and then heating at 82 ℃ to dry and cure the compound glue layer 5;
and c6, uniformly coating the anti-blocking coating prepared in the step c3 on the surface of the compound adhesive layer 5 to form an anti-blocking coating 6, and then heating at 90 ℃ to dry and solidify the anti-blocking coating 6, so as to obtain the composite base material polishing grinding tool.
Example 3:
a composite base material polishing grinding tool is shown in figure 1 and comprises a composite base material and an abrasive 7 adhered to the composite base material, wherein the composite base material is formed by compounding a TPU film 3 and a PET film 1 through a modified adhesive 2. The surface of the TPU film 3 of the composite base material is coated with a primer layer 4, a compound adhesive layer 4 and an anti-blocking coating layer 6 in sequence.
The preparation method of the composite base material polishing grinding tool comprises the following steps: step a, preparing a modified adhesive 2:
a1, preparing a modified polyurethane resin:
according to the following polyurethane resin: epoxy resin: accelerator =100:40:5, firstly adding polyurethane resin into a reaction kettle, adding epoxy resin under a stirring state, then heating to 65 ℃, reacting for 2.5 hours, then cooling to 20-30 ℃, then adding an accelerant, and uniformly stirring to obtain modified polyurethane resin;
the polyurethane resin is a polyurethane resin with the model number of KU-315, the epoxy resin is epoxy resin E-20, and the accelerator is a mixture of an accelerator K-61B and an accelerator EP-184 according to the weight ratio of 1.
a2, according to the following modified polyurethane resin: curing agent: filling agent: organic solvent =100:20:30:400, adding a curing agent into the modified polyurethane resin prepared in the step a1 under a stirring state, adding a filler, uniformly stirring, adding an organic solvent, adjusting to a proper viscosity, and filtering to obtain a modified adhesive 2 for later use;
wherein, the curing agent is triethylene diamine, the filling agent is inorganic filling material, and the organic solvent is butanone.
Step b, preparing a composite base material:
b1, compounding the TPU film 3 with release paper;
b2, coating the modified adhesive 2 prepared in the step a on the surface of the PET film 1 at the temperature of 20-30 ℃, and then stripping the TPU film 3 from release paper to transfer and adhere the TPU film 3 to the PET film 1;
b3, heating to 80 ℃ to cure the modified adhesive 2 to obtain a composite base material;
step c, bonding the abrasive 7 with the composite base material:
c1, according to the following polyurethane resin: curing agent: organic solvent =100:22:20, sequentially adding a curing agent and polyurethane resin into a batching barrel, uniformly stirring, adding an organic solvent to adjust to proper viscosity, and filtering to obtain a primer for later use; wherein:
the polyurethane resin is a polyurethane resin with a model number of KU-315, the curing agent is triethylene diamine, and the organic solvent is butanone;
c2, according to the water-based thermosetting resin: inorganic filler: leveling agent =100:28:0.6, sequentially adding the water-based thermosetting resin, the inorganic filler and the flatting agent into a batching barrel, uniformly stirring, adjusting the mixture to a proper viscosity by using water, filtering to obtain a compound adhesive, and storing the compound adhesive below 10 ℃ for later use; wherein:
the water-based thermosetting resin is urea-formaldehyde resin, the inorganic filler is titanium dioxide, and the flatting agent is a silane flatting agent;
c3, according to stearate: inorganic filler: emulsifier =100:40:5, sequentially adding stearate and inorganic filler into a batching barrel, uniformly stirring, adding an emulsifier, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the water-based anti-blocking coating; then according to the water-based anti-blocking coating: water-based adhesive: antistatic agent =100:20:2, sequentially adding the prepared water-based anti-clogging coating, water-based adhesive and antistatic agent into a mixing barrel, uniformly stirring, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the anti-clogging coating; wherein:
the stearate is magnesium stearate, the inorganic filler is titanium dioxide, the emulsifier is polyether emulsifier, the water-based adhesive is water-based urea-formaldehyde resin, and the antistatic agent is alkylamine;
c4, uniformly coating the primer prepared in the step c1 on the surface of the TPU film 3 layer in the composite base material obtained in the step b to form a primer layer 4, uniformly adhering the abrasive 7 to the primer layer 4 through electrostatic sand planting, and heating at 78 ℃ to dry and cure the primer layer 4;
c5, uniformly coating the compound glue prepared in the step c2 on the surface of the primer layer 4 to form a compound glue layer 5, and then heating at 80 ℃ to dry and cure the compound glue layer 5;
and c6, uniformly coating the anti-blocking coating prepared in the step c3 on the surface of the compound adhesive layer 5 to form an anti-blocking coating 6, and then heating at 94 ℃ to dry and solidify the anti-blocking coating 6, so as to obtain the composite base material polishing grinding tool.
Example 4:
a composite base material polishing grinding tool is shown in figure 1 and comprises a composite base material and an abrasive 7 adhered to the composite base material, wherein the composite base material is formed by compounding a TPU film 3 and a PET film 1 through a modified adhesive 2. The surface of the TPU film 3 of the composite base material is coated with a primer layer 4, a compound adhesive layer 4 and an anti-blocking coating layer 6 in sequence.
The preparation method of the composite base material polishing grinding tool comprises the following steps:
step a, preparing a modified adhesive 2:
a1, preparing a modified polyurethane resin:
according to the following polyurethane resin: epoxy resin: accelerator =100:20:1, firstly adding polyurethane resin into a reaction kettle, adding epoxy resin under a stirring state, heating to 58 ℃, reacting for 1.8 hours, cooling to 20-30 ℃, then adding an accelerator, and uniformly stirring to obtain modified polyurethane resin;
the polyurethane resin is a polyurethane resin with the model number of N-380, the epoxy resin is a mixture of epoxy resin E-44 and epoxy resin E-51 according to the weight ratio of 2.
a2, according to the following modified polyurethane resin: curing agent: filling agent: organic solvent =100:13:5:10, under the stirring state, firstly adding a curing agent into the modified polyurethane resin prepared in the step a1, then adding a filler, uniformly stirring, finally adding an organic solvent, adjusting to a proper viscosity, and filtering to obtain a modified adhesive 2 for later use;
the curing agent is polyamide 650, the filler is talcum powder, and the organic solvent is a mixture of ethyl acetate, xylene, butanone =1 and the following components in a volume-weight ratio of (1).
Step b, preparing a composite base material:
b1, compounding the TPU film 3 with release paper;
b2, coating the modified adhesive 2 prepared in the step a on the surface of the PET film 1 at the temperature of 20-30 ℃, and then peeling the TPU film 3 from the release paper to transfer and adhere the TPU film 3 to the PET film 1;
b3, heating to 76 ℃ to cure the modified adhesive 2 to obtain a composite base material;
step c, bonding the abrasive 7 with the composite base material:
c1, according to the following polyurethane resin: curing agent: organic solvent =100:28:15, sequentially adding a curing agent and polyurethane resin into a mixing barrel, uniformly stirring, adding an organic solvent to adjust to a proper viscosity, and filtering to obtain a primer for later use; wherein:
the polyurethane resin is a polyurethane resin with the model number of N-380, the curing agent is polyamide 650, and the organic solvent is a mixture of ethyl acetate, dimethylbenzene and butanone = 1;
c2, according to the water-based thermosetting resin: inorganic filler: leveling agent =100:20:0.2, sequentially adding the water-based thermosetting resin, the inorganic filler and the flatting agent into a batching barrel, uniformly stirring, adjusting the mixture to a proper viscosity by using water, filtering to obtain a compound adhesive, and storing the compound adhesive below 10 ℃ for later use; wherein:
the water-based thermosetting resin is water-soluble phenolic resin, the inorganic filler is talcum powder, and the leveling agent is an acrylic leveling agent;
c3, according to stearate: inorganic filler: emulsifier =100:20:1, sequentially adding stearate and inorganic filler into a batching barrel, uniformly stirring, adding an emulsifier, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the water-based anti-blocking coating; then according to the water-based anti-blocking coating: water-based adhesive: antistatic agent =100:13:1.2, sequentially adding the prepared water-based anti-clogging coating, water-based adhesive and antistatic agent into a mixing barrel, uniformly stirring, adjusting the viscosity to be proper by using water, and filtering to obtain the anti-clogging coating; wherein:
the stearate is calcium stearate, the inorganic filler is talcum powder, the emulsifier is fatty acid salt, the water-based adhesive is acrylic resin, and the antistatic agent is alkylamine;
c4, uniformly coating the primer prepared in the step c1 on the surface of the TPU film 3 layer in the composite base material obtained in the step b to form a primer layer 4, uniformly adhering the abrasive 7 to the primer layer 4 through electrostatic sand planting, and heating at 72 ℃ to dry and cure the primer layer 4;
c5, uniformly coating the compound glue prepared in the step c2 on the surface of the primer layer 4 to form a compound glue layer 5, and then heating at 86 ℃ to dry and cure the compound glue layer 5;
and c6, uniformly coating the anti-blocking coating prepared in the step c3 on the surface of the compound adhesive layer 5 to form an anti-blocking coating 6, and then heating at 100 ℃ to dry and solidify the anti-blocking coating 6, so as to obtain the composite base material polishing grinding tool.
Example 5:
a composite base material polishing grinding tool is shown in figure 1 and comprises a composite base material and an abrasive 7 adhered to the composite base material, wherein the composite base material is formed by compounding a TPU film 3 and a PET film 1 through a modified adhesive 2. The surface of the TPU film 3 of the composite base material is coated with a primer layer 4, a compound adhesive layer 4 and an anti-blocking coating layer 6 in sequence.
The preparation method of the composite base material polishing grinding tool comprises the following steps:
step a, preparing a modified adhesive 2:
a1, preparing a modified polyurethane resin:
according to the following polyurethane resin: epoxy resin: accelerator =100:35:4, firstly adding polyurethane resin into a reaction kettle, adding epoxy resin under a stirring state, then heating to 62 ℃, reacting for 2.2 hours, then cooling to 20-30 ℃, then adding an accelerant, and uniformly stirring to obtain modified polyurethane resin;
wherein the polyurethane resin is a mixture of polyurethane resin with a model number N-380 and a model number KU-318 according to a weight ratio of 3: epoxy resin E-44: epoxy resin E-20=1, and the accelerator is accelerator DMP-30.
a2, according to the following modified polyurethane resin: curing agent: filling agent: organic solvent =100:10:20:15, under the stirring state, firstly adding a curing agent into the modified polyurethane resin prepared in the step a1, then adding a filler, uniformly stirring, finally adding an organic solvent, adjusting to a proper viscosity, and filtering to obtain a modified adhesive 2 for later use;
the curing agent is a model L-101 curing agent, the filler is calcium carbonate, and the organic solvent is a mixture of dimethylbenzene and butanone according to a volume ratio of 1.
Step b, preparing a composite base material:
b1, compounding the TPU film 3 with release paper;
b2, coating the modified adhesive 2 prepared in the step a on the surface of the PET film 1 at the temperature of 20-30 ℃, and then stripping the TPU film 3 from release paper to transfer and adhere the TPU film 3 to the PET film 1;
b3, heating to 72 ℃ to cure the modified adhesive 2 to obtain a composite base material;
step c, bonding the abrasive 7 with the composite base material:
c1, according to the following polyurethane resin: curing agent: organic solvent =100:30:30, sequentially adding a curing agent and polyurethane resin into a mixing barrel, uniformly stirring, adding an organic solvent to adjust to proper viscosity, and filtering to obtain a primer for later use; wherein:
the polyurethane resin is a polyurethane resin with a model number of KU-318, the curing agent is a model number of L-101 curing agent, and the organic solvent is a mixture of dimethylbenzene and butanone according to a volume ratio of 1;
c2, according to the following water-based thermosetting resin: inorganic filler: leveling agent =100:35:0.8, sequentially adding the water-based thermosetting resin, the inorganic filler and the flatting agent into a batching barrel, uniformly stirring, adjusting the mixture to a proper viscosity by using water, filtering to obtain a compound adhesive, and storing the compound adhesive below 10 ℃ for later use; wherein:
the water-based thermosetting resin is water-soluble phenolic resin, the inorganic filler is calcium carbonate, and the flatting agent is a silane flatting agent;
c3, according to stearate: inorganic filler: emulsifier =100:35:4, sequentially adding stearate and inorganic filler into a batching barrel, uniformly stirring, adding an emulsifier, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the water-based anti-blocking coating; then according to the water-based anti-blocking coating: water-based adhesive: antistatic agent =100:10:0.5, sequentially adding the prepared water-based anti-clogging coating, the water-based adhesive and the antistatic agent into a mixing barrel, uniformly stirring, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the anti-clogging coating; wherein:
the stearate is zinc stearate, the inorganic filler is calcium carbonate, the emulsifier is alkyl sulfate, the water-based adhesive is latex, and the antistatic agent is GMS;
c4, uniformly coating the primer prepared in the step c1 on the surface of the TPU film 3 layer in the composite base material obtained in the step b to form a primer layer 4, uniformly adhering an abrasive 7 to the primer layer 4 through electrostatic sand planting, and heating at 76 ℃ to dry and solidify the primer layer 4;
c5, uniformly coating the compound adhesive prepared in the step c2 on the surface of the primer layer 4 to form a compound adhesive layer 5, and then heating at 90 ℃ to dry and cure the compound adhesive layer 5;
and c6, uniformly coating the anti-blocking coating prepared in the step c3 on the surface of the compound adhesive layer 5 to form an anti-blocking coating 6, and then heating at 92 ℃ to dry and solidify the anti-blocking coating 6, so as to obtain the composite base material polishing grinding tool.
Example 6:
a composite base material polishing grinding tool is shown in figure 1 and comprises a composite base material and an abrasive 7 adhered to the composite base material, wherein the composite base material is formed by compounding a TPU film 3 and a PET film 1 through a modified adhesive 2. The surface of the TPU film 3 of the composite base material is coated with a primer layer 4, a compound adhesive layer 4 and an anti-blocking coating layer 6 in sequence.
The preparation method of the composite base material polishing grinding tool comprises the following steps:
step a, preparing a modified adhesive 2:
a1, preparing modified polyurethane resin:
according to the following polyurethane resin: epoxy resin: accelerator =100:28:3, firstly adding the polyurethane resin into a reaction kettle, adding the epoxy resin under the stirring state, then heating to 60 ℃, reacting for 2 hours, then cooling to 20-30 ℃, then adding the accelerator, and uniformly stirring to obtain the modified polyurethane resin;
wherein the polyurethane resin is a mixture of polyurethane resins of types N-380, KU-318 and KU-315 according to a weight ratio of 1: epoxy resin E-20=1, and the accelerator is a mixture of accelerator DMP-30, accelerator EP-184 and accelerator K-61B = 2.
a2, according to the following modified polyurethane resin: curing agent: filling agent: organic solvent =100:15:10:25, adding a curing agent into the modified polyurethane resin prepared in the step a1 under a stirring state, adding a filler, uniformly stirring, adding an organic solvent, adjusting to a proper viscosity, and filtering to obtain a modified adhesive 2 for later use;
wherein the curing agent is triethylene diamine, the filling agent is titanium dioxide, and the organic solvent is xylene.
Step b, preparing a composite base material:
b1, compounding the TPU film 3 with release paper;
b2, coating the modified adhesive 2 prepared in the step a on the surface of the PET film 1 at the temperature of 20-30 ℃, and then stripping the TPU film 3 from release paper to transfer and adhere the TPU film 3 to the PET film 1;
b3, heating to 78 ℃ to cure the modified adhesive 2 to obtain a composite base material;
step c, bonding the abrasive 7 with the composite base material:
c1, according to the following polyurethane resin: curing agent: organic solvent =100:20:10, sequentially adding a curing agent and polyurethane resin into a batching barrel, uniformly stirring, adding an organic solvent to adjust to proper viscosity, and filtering to obtain a primer for later use; wherein:
the polyurethane resin is a polyurethane resin with a model number of KU-315, the curing agent is triethylene diamine, and the organic solvent is xylene;
c2, according to the water-based thermosetting resin: inorganic filler: leveling agent =100:40:1.0, sequentially adding the water-based thermosetting resin, the inorganic filler and the flatting agent into a batching barrel, uniformly stirring, adjusting the mixture to a proper viscosity by using water, filtering to obtain a compound adhesive, and storing the compound adhesive below 10 ℃ for later use; wherein:
the water-based thermosetting resin is urea-formaldehyde resin, the inorganic filler is titanium dioxide, and the leveling agent is an acrylic leveling agent;
c3, according to stearate: inorganic filler: emulsifier =100:28:3, sequentially adding the stearate and the inorganic filler into a batching barrel, uniformly stirring, adding an emulsifier, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the water-based anti-blocking coating; then according to the water-based anti-blocking paint: water-based adhesive: antistatic agent =10:15:1.2, sequentially adding the prepared water-based anti-clogging coating, water-based adhesive and antistatic agent into a mixing barrel, uniformly stirring, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the anti-clogging coating; wherein:
the stearate is magnesium stearate, the inorganic filler is titanium dioxide, the emulsifier is polyether emulsifier, the water-based adhesive is water-based urea-formaldehyde resin, and the antistatic agent is alkylamine;
c4, uniformly coating the primer prepared in the step c1 on the surface of the TPU film 3 layer in the composite base material obtained in the step b to form a primer layer 4, uniformly adhering an abrasive 7 to the primer layer 4 through electrostatic sand planting, and heating at 80 ℃ to dry and solidify the primer layer 4;
c5, uniformly coating the compound glue prepared in the step c2 on the surface of the primer layer 4 to form a compound glue layer 5, and then heating at 88 ℃ to dry and cure the compound glue layer 5;
and c6, uniformly coating the anti-blocking coating prepared in the step c3 on the surface of the compound adhesive layer 5 to form an anti-blocking coating 6, and then heating at 96 ℃ to dry and solidify the anti-blocking coating 6, so as to obtain the composite base material polishing grinding tool.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (6)

1. A method for preparing a composite substrate polishing grinding tool is characterized by comprising the following steps: the composite base material polishing grinding tool comprises a composite base material and an abrasive adhered to the composite base material, wherein the composite base material is formed by compounding a TPU film and a PET film through a modified adhesive;
the modified adhesive is prepared from the following raw materials in parts by weight:
Figure QLYQS_1
the modified polyurethane resin is prepared from polyurethane resin, epoxy resin and an accelerant in parts by weight: epoxy resin: accelerator =100:20 to 40: 1-5;
the surface of the TPU film of the composite base material is sequentially coated with a primer layer, a compound adhesive layer and an anti-blocking coating;
the primer layer is prepared from polyurethane resin, a curing agent and an organic solvent according to the weight ratio: curing agent: organic solvent =100:20 to 30: 10-30 parts of a raw material;
the compound adhesive layer is prepared from water-based thermosetting resin, inorganic filler and a flatting agent according to the weight ratio: inorganic fillers: leveling agent =100:20 to 40:0.2 to 1.0;
the anti-blocking coating is prepared from a water-based anti-blocking coating, a water-based adhesive and an antistatic agent according to the weight ratio: water-based adhesive: antistatic agent =100: 0.5 to 2.0, wherein: the water-based anti-blocking coating is prepared from stearate, inorganic filler and an emulsifier according to the weight ratio: inorganic filler: emulsifier =100:20 to 40: 1-5;
the preparation method of the composite base material polishing grinding tool comprises the following steps:
step a, preparing a modified adhesive:
a1, according to the formula amount, firstly adding polyurethane resin into a reaction kettle, adding epoxy resin under a stirring state, then heating to 55-65 ℃, reacting for 1.5-2.5 hours, then cooling to 20-30 ℃, then adding an accelerant, and uniformly stirring to obtain modified polyurethane resin;
a2, adding a curing agent into the modified polyurethane resin prepared in the step a1 under a stirring state according to the formula amount, then adding a filler, uniformly stirring, finally adding an organic solvent, adjusting to a proper viscosity, and filtering to obtain the modified adhesive for later use;
step b, preparing a composite base material:
b1, compounding the TPU film and release paper;
b2, coating the modified adhesive prepared in the step a on the surface of the PET film at the temperature of 20-30 ℃, and then stripping the TPU film from the release paper to transfer and adhere the TPU film to the PET film;
b3, heating to cure the modified adhesive to obtain the composite base material;
step c, bonding the abrasive with the composite base material:
c1, sequentially adding a curing agent and polyurethane resin into a batching barrel according to the formula amount, uniformly stirring, adding an organic solvent to adjust to proper viscosity, and filtering to obtain a primer for later use;
c2, sequentially adding the water-based thermosetting resin, the inorganic filling material and the flatting agent into a batching barrel according to the formula amount, uniformly stirring, adjusting the mixture to a proper viscosity by using water, filtering to obtain a compound adhesive, and storing the compound adhesive to be below 10 ℃ for later use;
c3, sequentially adding the stearate and the inorganic filler into a batching barrel according to the formula amount, uniformly stirring, adding an emulsifier, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the water-based anti-blocking coating; then sequentially adding the prepared water-based anti-clogging coating, the water-based adhesive and the antistatic agent into a mixing barrel, uniformly stirring, adjusting the viscosity to a proper viscosity by using water, and filtering to obtain the anti-clogging coating;
c4, uniformly coating the primer prepared in the step c1 on the surface of the TPU film in the composite base material obtained in the step b to form a primer layer, uniformly adhering the abrasive to the primer layer through electrostatic sand planting, and heating at 70-80 ℃ to dry and cure the primer layer;
c5, uniformly coating the compound adhesive prepared in the step c2 on the surface of the bottom adhesive layer to form a compound adhesive layer, and then heating at 80-80 ℃ to dry and solidify the compound adhesive layer;
and c6, uniformly coating the anti-blocking coating prepared in the step c3 on the surface of the compound adhesive layer to form an anti-blocking coating, and then heating at 90-100 ℃ to dry and solidify the anti-blocking coating, so as to obtain the composite base material polishing grinding tool.
2. The method of claim 1, wherein the method comprises the steps of: the curing agent is a model L-101 curing agent, triethylene diamine, TDI or polyamide 650;
the filler is any one of talcum powder, calcium carbonate and titanium dioxide;
the organic solvent is at least one of ethyl acetate, xylene and butanone.
3. The method of manufacturing a composite substrate polishing abrasive tool according to claim 1, wherein: the polyurethane resin is at least one of polyurethane resins with the types of N-380, KU-318 and KU-315;
the epoxy resin is at least one of epoxy resin E-44, epoxy resin E-51 and epoxy resin E-20;
the accelerator is at least one of accelerator DMP-30, accelerator EP-184 and accelerator K-61B.
4. The method of manufacturing a composite substrate polishing abrasive tool according to claim 1, wherein: the water-based thermosetting resin is urea-formaldehyde resin or water-soluble phenolic resin;
the inorganic filler is any one of talcum powder, calcium carbonate and titanium dioxide;
the leveling agent is a silane or acrylic leveling agent.
5. The method of manufacturing a composite substrate polishing abrasive tool according to claim 1, wherein: the water-based adhesive is any one of acrylic resin, latex and water-based urea-formaldehyde resin;
the antistatic agent is alkylamine or GMS.
6. The method of manufacturing a composite substrate polishing abrasive tool according to claim 1, wherein: the stearate is any one of calcium stearate, zinc stearate and magnesium stearate;
the inorganic filler is any one of talcum powder, calcium carbonate and titanium dioxide;
the emulsifier is any one of fatty acid salt, alkyl sulfate and polyether emulsifier.
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