CN112792752B - Abrasive cloth - Google Patents
Abrasive cloth Download PDFInfo
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- CN112792752B CN112792752B CN202110134137.6A CN202110134137A CN112792752B CN 112792752 B CN112792752 B CN 112792752B CN 202110134137 A CN202110134137 A CN 202110134137A CN 112792752 B CN112792752 B CN 112792752B
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- cloth
- layer
- abrasive
- phenolic resin
- based substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/02—Backings, e.g. foils, webs, mesh fabrics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
Abstract
The application discloses abrasive cloth, including cloth base substrate, be located the primer layer on cloth base substrate one side, at least partial embedding endAn abrasive layer of the glue layer and a compound glue layer coated on the abrasive layer; wherein, the selection of the cloth base material, the bottom glue layer and the compound glue layer satisfies each relational expression as follows: alpha is more than beta, gamma is more than alpha; wherein alpha is the thickness of the bottom glue layer, beta is the thickness of the compound glue layer, and gamma is the thickness of the cloth base substrate; γ is 10 β; n is a radical of1(10000 (. alpha. + beta.) + 1000. gamma.; where, N is1The warp-direction tensile breaking strength of the abrasive cloth is 1800-2500N.
Description
Technical Field
The invention relates to the technical field of abrasive cloth production, in particular to an abrasive cloth.
Background
The abrasive cloth is a material widely used in the industrial fields of automobiles, machinery, building materials and the like and used for carrying out coarse grinding, fine grinding and polishing on metals, nonferrous metals, wood furniture, stone, glass, ceramics, gems and the like.
In the prior art, the abrasive cloth for rough grinding, finish grinding and polishing is generally formed by covering a primer layer formed by an adhesive on the surface of a cloth-based substrate, covering stone powder for grinding and polishing on the primer layer to form a grinding layer, and then covering a compound adhesive layer on the grinding layer. However, when the bottom glue layer or the compound glue layer of the existing abrasive cloth is too thin, the existing abrasive cloth cannot be matched with a cloth base material, cannot reach the target strength, is easy to break, has poor wear resistance, is easy to scrap in the using process and has short service life; when the primer layer or the compound layer is too thick, the primer layer or the compound layer does not have great influence on the strength of the abrasive cloth, so that material waste is caused.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present application is to provide an abrasive cloth, which can reduce material waste under the condition of meeting the strength requirement.
In order to solve the above problems, an embodiment of the present invention provides an abrasive cloth, including a cloth-based substrate, a primer layer on one side of the cloth-based substrate, an abrasive layer at least partially embedded in the primer layer, and a size coat coated on the abrasive layer; wherein the selection of the cloth-based substrate, the primer layer and the compound adhesive layer satisfies each of the following relational expressions:
alpha is more than beta, gamma is more than alpha; wherein alpha is the thickness of the bottom glue layer, beta is the thickness of the compound glue layer, and gamma is the thickness of the cloth-based base material;
γ＝10β；
N110000(α + β) +1000 γ; wherein, N1The warp-direction tensile breaking strength of the abrasive cloth is 1800-2500N.
Further, the selection of the primer layer and the compound adhesive layer also satisfies the following relational expression:
Furthermore, the number of warp yarns of the cloth base substrate is 5-15, the density of warp yarns of the cloth base substrate is 91-95, the number of weft yarns of the cloth base substrate is 14-18, and the density of weft yarns of the cloth base substrate is 42-46.
Further, the cloth-based substrate comprises a woven cloth, an impregnation layer immersed in the woven cloth and an adhesive layer partially immersed in one surface of the woven cloth; the impregnation layer contains first polyvinyl alcohol and first phenolic resin, and the adhesive layer contains acrylic ester.
Further, the cloth base substrate also comprises a precoating layer which is partially immersed into the other surface of the woven cloth, and the primer layer is covered on the woven cloth through the precoating layer;
the precoat layer contains a second phenolic resin.
Further, the precoat layer also contains a coupling agent; in the precoating layer, the proportion of the second phenolic resin is 65-73%, and the proportion of the coupling agent is 0.1-0.3%.
Furthermore, the weave structure of the woven cloth is 2-over-1-under.
Further, the woven fabric is cotton-polyester fabric.
Furthermore, the grinding particles in the grinding material layer contain corundum zirconium particles and corundum brown particles, and the corundum zirconium particles account for 65-85% of the total amount of the grinding particles.
Further, the primer layer contains a third phenolic resin, and the double-glue layer contains a fourth phenolic resin.
Compared with the prior art, the abrasive cloth of this embodiment can not cause the material waste of primer layer and compound glue film when can satisfying target strength.
The cloth base substrate of this embodiment still contains the impregnated layer that soaks the weaving, and the impregnated layer contains first polyvinyl alcohol and first phenolic resin, promotes the intensity and the tensile degree of cloth base substrate, guarantees that in use satisfies the requirement of thousand pages of wheels to the high flexibility of emery cloth, high strength to make the product have better ductility in the use, improve the intensity of cloth base substrate, avoid the product to appear because the emery cloth rupture phenomenon that intensity leads to inadequately in the use.
The fabric base material of the embodiment also comprises a first adhesive layer which is partially immersed into one surface of the woven fabric, and the adhesive layer contains acrylic ester, so that the fusion degree of the woven fabric and the adhesive layer is enhanced, and meanwhile, the water resistance and the durability of the formed fabric base material are improved, and the grinding capacity and the grinding efficiency of the abrasive cloth are improved.
The cloth-based substrate of the embodiment also comprises a precoating layer which is partially immersed into the other surface of the woven cloth, and the precoating layer contains phenolic resin, so that the adhesion between the cloth-based substrate and the primer layer is enhanced, and the primer layer is better combined with the cloth base.
Drawings
FIG. 1 is a schematic structural diagram of an abrasive cloth according to an embodiment;
FIG. 2 is a schematic view of the structure of the cloth-based substrate in one embodiment.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the prior art, the abrasive cloth for rough grinding, finish grinding and polishing is generally formed by covering a primer layer formed by an adhesive on the surface of a cloth-based substrate, covering stone powder for grinding and polishing on the primer layer to form a grinding layer, and then covering a compound adhesive layer on the grinding layer. In order to ensure the breaking strength of the abrasive cloth, the thickness relationship between the primer layer and the compound adhesive layer and the cloth base material is very important. If the bottom rubber layer or the compound rubber layer is too thin, the base material cannot be matched with the selected cloth base material to enable the abrasive cloth to reach the target strength, and the abrasive cloth is easy to break, poor in wear resistance, easy to scrap in the using process and short in service life; if the primer layer or the compound layer is too thick, material redundancy occurs, resulting in material waste.
To solve the above problems, as shown in fig. 1, an embodiment of the present invention provides a schematic structural diagram of an abrasive cloth, which includes a cloth base substrate 1, a primer layer 2 on one side of the cloth base substrate, an abrasive layer 3 at least partially embedded in the primer layer, and a size layer 4 coated on the abrasive layer; the selection of the cloth base substrate 1, the primer layer 2 and the compound adhesive layer 4 satisfies the following relational expression: alpha is more than beta, gamma is more than alpha; wherein alpha is the thickness of the bottom glue layer, beta is the thickness of the compound glue layer, and gamma is the thickness of the cloth base substrate; γ is 10 β; n is a radical of110000(α + β) +1000 γ; wherein N is1The tensile breaking strength of the abrasive cloth in the warp direction is 1800-2500N.
In one embodiment, the cloth-based substrate 1, the primer layer 2 and the compound adhesive layer 4 can be selected to satisfy the following relation:
wherein N is2The weft breaking strength of the abrasive cloth is 608-800N.
As an example of this embodiment, the thickness of the cloth-based substrate is 0.5mm, and in this case, if the warp tensile breaking strength of the emery cloth is 1800N and/or the weft breaking strength is 608N, the thickness of the base rubber is 0.08mm, and the thickness of the compound rubber is 0.05 mm. If the warp tensile breaking strength of the abrasive cloth is 2500N and/or the weft breaking strength is 800N, the thickness of the base rubber is 0.15mm, and the thickness of the compound rubber is 0.05 mm.
In one embodiment, the warp count of the cloth base substrate is 5-15, the warp density of the cloth base substrate is 91-95, the weft count of the cloth base substrate is 14-18, and the weft density of the cloth base substrate is 42-46. As an example of this embodiment, the fabric base substrate has a warp count of 5, a warp density of 91, a weft count of 14, and a weft density of 42; as still another example of this embodiment, the cloth base substrate has a warp count of 10, a warp density of 93, a weft count of 16, and a weft density of 44; as still another example of this embodiment, the cloth base substrate has a warp count of 15, a warp density of 95, a weft count of 18, and a weft density of 46. It should be noted that, there is no corresponding relationship among the four parameters of the warp yarn count, the warp yarn density, the weft yarn count and the weft yarn density of the fabric base substrate, and the warp yarn and weft yarn densities are only related to the selected thickness of the yarn count, that is, when the warp yarn count of the fabric base substrate is selected to be 10, the weft yarn count may be 14 or 18 or a value in other range, the warp yarn density may be 91 or 95 or a value in other range, and the weft yarn density may be 42 or 46 or a value in other range.
Through tests, when the relationship among the cloth base material, the bottom glue layer and the compound glue layer meets the relationship, the corresponding abrasive cloth can meet the target strength, and meanwhile, the material waste of the bottom glue layer and the compound glue layer can be reduced.
In one embodiment, as shown in fig. 2, the cloth-based substrate 1 includes a woven cloth 11, an impregnation layer 12 impregnated into the woven cloth 11, and an adhesive layer 13 partially impregnated into one side of the woven cloth. The impregnation layer 12 contains a first polyvinyl alcohol and a first phenolic resin, and the adhesive layer 13 contains an acrylate. Wherein, the adhesive layer 13 and the primer layer 1 are arranged on different surfaces of the fabric 11.
In one embodiment, the first polyvinyl alcohol is 52-58% by mass of the impregnated layer, and the first phenolic resin is 20-25% by mass of the impregnated layer. As an example of this embodiment, the impregnation layer 12 includes the following components in percentage by mass: first polyvinyl alcohol: 52%, first phenolic resin: 25%, water: 21.4%, wetting agent: 1.6 percent. As another example of this embodiment, the primer layer includes the following components in percentage by mass: first polyvinyl alcohol: 55.4%, first phenolic resin: 22.6%, water: 20.4%, wetting agent: 1.6 percent. As a further example of this embodiment, the primer layer comprises the following components in percentage by mass: first polyvinyl alcohol: 58%, first phenolic resin: 20%, water: 21.7%, wetting agent: 0.3 percent. It should be noted that, in the composition of the primer layer, except for the first polyvinyl alcohol and the first phenolic resin, other materials and the proportion thereof may be adjusted according to actual situations, and are not limited herein.
Through the intensity and the tensile degree that adopt first polyvinyl alcohol promotion cloth base substrate at the impregnated layer, guarantee that in use satisfies thousand pages of wheels to the requirement of high flexibility, high strength of emery cloth to make the product have better ductility in the use, simultaneously through adopting first phenolic resin at the impregnated layer, further strengthen the intensity of emery cloth base when making the emery cloth have certain stiffness, avoid the product to appear because the emery cloth phenomenon of splitting that intensity leads to inadequately in the use.
In one embodiment, the acrylate is present in the adhesive layer at a mass ratio of 24% to 30%. Besides acrylic ester, the adhesive layer also contains polyvinyl alcohol and phenolic resin, wherein the percentage of polyvinyl alcohol in the adhesive layer is 2% -9%, the percentage of phenolic resin in the adhesive layer is 25% -30%, and the rest part in the adhesive layer can be composed of water. When the cloth base material contains the adhesive layer, tests show that the water resistance and the durability of the cloth base material containing the adhesive layer are obviously improved compared with the existing cloth base material, and meanwhile, the flexibility, the grinding capacity and the grinding efficiency of the abrasive cloth formed by utilizing the cloth base material are obviously improved compared with the existing abrasive cloth.
In one embodiment, the cloth-based substrate further comprises a precoat layer 14 partially immersed in the other side of the woven cloth 11, and the make coat 2 is covered on the woven cloth 11 through the precoat layer 14. Wherein the precoat layer 14 contains a second phenolic resin for enhancing the adhesion between the make coat and the fabric cloth, so that the make coat bonds better to the cloth base.
In one embodiment, the precoat layer further comprises a coupling agent, the mass percentage of the second phenolic resin in the precoat layer is 65% -73%, and the mass percentage of the coupling agent in the precoat layer is 0.1% -0.3%. As an example of this embodiment, the precoat layer comprises the following components in mass percent: third phenol-formaldehyde resin: 65%, stone powder: 34.9%, coupling agent: 0.1 percent. As a further example of this embodiment, the precoat layer comprises the following components in mass percent: third phenol-formaldehyde resin: 69.87%, stone powder: 29.94%, coupling agent: 0.19 percent. As a further example of this embodiment, the precoat layer comprises the following components in mass percent: third phenol-formaldehyde resin: 73%, stone powder: 26.7%, coupling agent: 0.3 percent. It should be noted that, in the composition of the precoat layer, the other materials and the ratio thereof, except for the third polyvinyl alcohol and the coupling agent, can be adjusted according to the actual situation, and are not limited herein.
In one embodiment, the material of the woven cloth is cotton-polyester cloth, and the weave structure is 2-over-1-under.
In one embodiment, the abrasive particles in the abrasive layer comprise zircon corundum particles and brown corundum particles, the zircon corundum particles account for 65% -85% of the total amount of the abrasive particles, and the brown corundum particles account for 15% -35% of the total amount of the abrasive particles. As an example of this embodiment, 65% of the total amount of the zirconia alumina grain station abrasive grains and 35% of the total amount of the brown alumina grain station abrasive grains; as yet another example of this embodiment, 75% of the total amount of zirconia alumina grain station abrasive grains and 25% of the total amount of brown alumina grain station abrasive grains; as a further example of this example, 85% of the total amount of the zirconia alumina grain station abrasive grains and 15% of the total amount of the brown alumina grain station abrasive grains.
In one embodiment, the primer layer 2 contains a third phenolic resin, and the size-changing layer 3 contains a fourth phenolic resin. The primer layer 2 may be formed by the third phenolic resin, or may be formed by glue containing the third phenolic resin, and the double-glue layer is the same.
Tests on the abrasive cloth manufactured by the embodiment can reach that the warp-direction breaking elongation is 10-15%, the weft-direction breaking elongation is 1-5%, the constant load 600N elongation is 0.85-1%, and the sand peeling strength is 180-230%.
The foregoing is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.
Claims (9)
1. An abrasive cloth comprising a cloth-based substrate, a make coat disposed on one side of said cloth-based substrate, an abrasive layer at least partially embedded in said make coat, and a size coat disposed over said abrasive layer; wherein the selection of the cloth-based substrate, the primer layer and the compound adhesive layer satisfies each of the following relational expressions:
alpha is more than beta, gamma is more than alpha; wherein alpha is the thickness of the bottom glue layer, beta is the thickness of the compound glue layer, and gamma is the thickness of the cloth base substrate;
γ＝10β；
N110000(α + β) +1000 γ; wherein, N1The warp-direction tensile breaking strength of the abrasive cloth is 1800-2500N.
2. The abrasive cloth according to claim 1, wherein the cloth-based substrate has a warp count of 5 to 15, a warp density of 91 to 95, a weft count of 14 to 18, and a weft density of 42 to 46.
3. The abrasive cloth according to any one of claims 1 or 2, wherein the cloth-based substrate comprises a woven cloth, an impregnation layer impregnated into the woven cloth, and an adhesive layer partially impregnated into one side of the woven cloth; the impregnation layer contains first polyvinyl alcohol and first phenolic resin, and the adhesive layer contains acrylic ester.
4. An abrasive cloth according to claim 3 in which the cloth-based substrate further comprises a precoat layer partially impregnated into the other face of the woven cloth, the make coat being coated on the woven cloth by the precoat layer;
the precoat layer contains a second phenolic resin.
5. The abrasive cloth of claim 4 wherein the precoat layer further comprises a coupling agent; in the precoating layer, the proportion of the second phenolic resin is 65-73%, and the proportion of the coupling agent is 0.1-0.3%.
6. The abrasive cloth according to claim 3, wherein the weave of the woven cloth is 2 over 1 under.
7. The abrasive cloth of claim 3, wherein the woven cloth is a cotton-polyester cloth.
8. Abrasive cloth according to claim 1, characterised in that the abrasive grains in the abrasive layer comprise zircon corundum grains and brown corundum grains, said zircon corundum grains representing 65-85% of the total amount of said abrasive grains.
9. The abrasive cloth of claim 1 wherein the primer layer comprises a third phenolic resin and the size layer comprises a fourth phenolic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110134137.6A CN112792752B (en) | 2021-01-29 | 2021-01-29 | Abrasive cloth |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110134137.6A CN112792752B (en) | 2021-01-29 | 2021-01-29 | Abrasive cloth |
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| CN112792752A CN112792752A (en) | 2021-05-14 |
| CN112792752B true CN112792752B (en) | 2022-07-15 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4011358A (en) * | 1974-07-23 | 1977-03-08 | Minnesota Mining And Manufacturing Company | Article having a coextruded polyester support film |
| JP2003147286A (en) * | 2001-11-14 | 2003-05-21 | Sekisui Chem Co Ltd | Adhesive tape for fixing abrasive |
| WO2011068724A2 (en) * | 2009-12-02 | 2011-06-09 | 3M Innovative Properties Company | Method of making a coated abrasive article having shaped abrasive particles and resulting product |
| CN205710567U (en) * | 2016-06-23 | 2016-11-23 | 苏州英诺复合材料有限公司 | High intensity cloth base adhesive tape |
| CN107139087A (en) * | 2017-05-27 | 2017-09-08 | 江苏省江南新型复合研磨材料及制品工程技术研究中心有限公司 | A kind of production technology of high-adhesion polyester water-proof abrasive cloth |
| CN110774182B (en) * | 2018-07-30 | 2022-03-08 | 江苏华东砂轮有限公司 | Coated abrasive tool for precision grinder abrasive belt and preparation method thereof |
| CN110774183B (en) * | 2019-11-01 | 2021-04-23 | 古德尚新材料科技湖北有限公司 | Ultrathin and ultra-soft smooth abrasive cloth and production process thereof |
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