CA1332702C - Rubber-ceramic composition - Google Patents
Rubber-ceramic compositionInfo
- Publication number
- CA1332702C CA1332702C CA 574903 CA574903A CA1332702C CA 1332702 C CA1332702 C CA 1332702C CA 574903 CA574903 CA 574903 CA 574903 A CA574903 A CA 574903A CA 1332702 C CA1332702 C CA 1332702C
- Authority
- CA
- Canada
- Prior art keywords
- rubber
- ceramic
- metal
- temperature
- coat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 29
- 239000000203 mixture Substances 0.000 title description 5
- 239000002184 metal Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000005524 ceramic coating Methods 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000005219 brazing Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010073 coating (rubber) Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 241000517645 Abra Species 0.000 description 1
- 229910001361 White metal Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010969 white metal Substances 0.000 description 1
Classifications
-
- 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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/14—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a face layer formed of separate pieces of material which are juxtaposed side-by-side
Landscapes
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
- Paints Or Removers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A method of forming a rubber-ceramic coating on a metal surface. A rubber coat is applied to the metal surface and heated to a temperature of about 100°F.
plurality of discrete ceramic bodies are positioned on the rubber surface. The ceramic bodies are then pressed into the rubber coat while maintaining the temperature at a range in which the rubber will not cure.
A method of forming a rubber-ceramic coating on a metal surface. A rubber coat is applied to the metal surface and heated to a temperature of about 100°F.
plurality of discrete ceramic bodies are positioned on the rubber surface. The ceramic bodies are then pressed into the rubber coat while maintaining the temperature at a range in which the rubber will not cure.
Description
RUBBER-CERAMIC COMPOSITION
This invention relate~ to a method of producing ceramic and rubber articles.
Articles made of a composition of rubber and ceramic are known. They combine the virtues of ceramics, with their great wear resistance, with the adhesiveness and bonding ability of rubber.
A disadvantage in ceramics i9 that they are brittle but this disadvantage i~ overcome by as~ociating the ceramic with rubber. However, in certain heavy duty circumstances, where hard use is encountered, either hy virtue of high vibration ~or contact with highly abra~ive materials and the like, problems are still encountered in that the bond of the rubber to the ceramic i8 not suf-ficiently strong to withstand the applied forces.
This is particularly ~o in mining machinery generally and, in particular, in pump liner~, cyclone parts, pipes and hoses.
Example~ of the prior art known to applicant include~ the United States patents 3,252,612 to Von ~yhre; 4,591~535 ~e Mizuhara; 2,128,635 to Hale and 4,1~4,000 to Denman.
O the above, Von Myhre dl~clo~e~ a aer~mic arkicle having an impaa~-ab90rbing rubber layer ~ormed on the ceramic ~ubstrate and~a proteative metal layer covering the rubber layer. In manufacturing this article the ceramic portion is glazed and then dipped into a bath of rubber, which adheres to the treated sur~ace. The rubber layer i8 then impreqnated with a metallic pigment and the entire artiale is plated with a metal.
Mizuhara teache~ a method o~ brazing ceramics u~ing active brazing alloys and i8 o interest or it~
~ 3-~?7 0 ~-description of a method of bonding ceramic to metal using a brazing alloy.
Denman discloses a coupling device used for securing glass to metal using a thermal plastic strip which is heated between 300 to 500F to create an adhesive surface that contacts the glass.
Hale teaches a method of bonding rubber to ceramic or metal articles~
All of the above display certain disadvantages and the present invention seeks to provide a method of improving the bond between rubber and ceramic to produce a product of particular value in heavy duty use.
Accordingly the invention provides a method of foxming a rubber-ceramic coating on a metal surface 15 comprising applying a rubber coat to the metal sur~ace; ``
heating the rubber coat to a temperature of about 100F;
positioning a plurality o~ discrete ceramic bodies on the rubber sur~ace; pressing the ceramic bodies into the rubber coat while maintaining the temperature at a xange in which the rubber does not cure and heatin~ the product to cure the product.
A~pects o~ the invention are illustrated in the drawings, on which:
2S Figuxe 1 i~ a secti~n through an apparatus use~ul in aarrying out thelmethod o~ the present invention; andi Figure 2 i8 a section on the line 2-2 o~ Figure l.
The drawings show an apparatus comprising a mold member 2 able to position ceramic tiles 4 in a metal body 6 coated with a rubber coating 8.
The method is carried out as follows.
!
.
~ 33~7 ~-All metal to be protected according to the present invention is sandblasted to white metal. Primer glue, for example Chemlok No. 220T~ is applied to the metal and a rubber primer, for example Chemlok TY-PLY~ is applied to the metal 6. Primers, for example Chemlok AP-134~H followed by Chemlok 250TM are applied to the ceramic tiles 4 and the rubber coating 8 is pre-heated to 100F.
~ he ceramic tiles 4 are coated with a solution of rubber dissolved in toluene and placed in position on the outer surface of the rubber. The rubber is maintained at a temperature of 100F while the ceramics are compressed into the rubber with mold member 2 or a hydraulic pres~.
Time is allowed for the rubber to flow between the tiles 4 to create the component according to the pre~ent invention.
If a mold is used, as shown in Figure 1, to compress the ceramic tile~ 4 into the rubber, the rubber is bonded to the metal or other surface before being imbedded with aeramic~. If a hydraulic press i9 used to compress the cerami¢ tiles 4 into the ruhbex 8, the composition is bonded to the metal or other surface.
Finally, ~he pxoduct i~ ~team aured in an autoalave.
It should be noted that the aeramic tiles mu~t not be overheated, that ls they should not be at a temperature greate~ than lOO~F for more than a hal~ hour, a~ter the primer~has bèen applied, ba~ore the curing process. Furthermore even pressure must be maintained aaro~s all aeramic tiles until those tiles have been compre~sed into the rubber and the pressure should be maintained during curing if at all possible.
!
:`, , 1 33~702 In general when the ceramic tiles are to be used in contact with particles smaller than 200 mesh the ceramic may be based on alumina.
The present invention, in addition to providing a new product, can also be used to repair existing products. Provided the component has a rubber layer greater than ~" thick a half inch of rubber may be ground out in order to allow room for a composition according to the pre~ent invention. Then the ~teps set out above are followed starting with the application of primer to the ceramic tiles.
In test~ conducted the present invention ha~
produced article~ that are extremely strong in their resistance to wear and vibration.
I
This invention relate~ to a method of producing ceramic and rubber articles.
Articles made of a composition of rubber and ceramic are known. They combine the virtues of ceramics, with their great wear resistance, with the adhesiveness and bonding ability of rubber.
A disadvantage in ceramics i9 that they are brittle but this disadvantage i~ overcome by as~ociating the ceramic with rubber. However, in certain heavy duty circumstances, where hard use is encountered, either hy virtue of high vibration ~or contact with highly abra~ive materials and the like, problems are still encountered in that the bond of the rubber to the ceramic i8 not suf-ficiently strong to withstand the applied forces.
This is particularly ~o in mining machinery generally and, in particular, in pump liner~, cyclone parts, pipes and hoses.
Example~ of the prior art known to applicant include~ the United States patents 3,252,612 to Von ~yhre; 4,591~535 ~e Mizuhara; 2,128,635 to Hale and 4,1~4,000 to Denman.
O the above, Von Myhre dl~clo~e~ a aer~mic arkicle having an impaa~-ab90rbing rubber layer ~ormed on the ceramic ~ubstrate and~a proteative metal layer covering the rubber layer. In manufacturing this article the ceramic portion is glazed and then dipped into a bath of rubber, which adheres to the treated sur~ace. The rubber layer i8 then impreqnated with a metallic pigment and the entire artiale is plated with a metal.
Mizuhara teache~ a method o~ brazing ceramics u~ing active brazing alloys and i8 o interest or it~
~ 3-~?7 0 ~-description of a method of bonding ceramic to metal using a brazing alloy.
Denman discloses a coupling device used for securing glass to metal using a thermal plastic strip which is heated between 300 to 500F to create an adhesive surface that contacts the glass.
Hale teaches a method of bonding rubber to ceramic or metal articles~
All of the above display certain disadvantages and the present invention seeks to provide a method of improving the bond between rubber and ceramic to produce a product of particular value in heavy duty use.
Accordingly the invention provides a method of foxming a rubber-ceramic coating on a metal surface 15 comprising applying a rubber coat to the metal sur~ace; ``
heating the rubber coat to a temperature of about 100F;
positioning a plurality o~ discrete ceramic bodies on the rubber sur~ace; pressing the ceramic bodies into the rubber coat while maintaining the temperature at a xange in which the rubber does not cure and heatin~ the product to cure the product.
A~pects o~ the invention are illustrated in the drawings, on which:
2S Figuxe 1 i~ a secti~n through an apparatus use~ul in aarrying out thelmethod o~ the present invention; andi Figure 2 i8 a section on the line 2-2 o~ Figure l.
The drawings show an apparatus comprising a mold member 2 able to position ceramic tiles 4 in a metal body 6 coated with a rubber coating 8.
The method is carried out as follows.
!
.
~ 33~7 ~-All metal to be protected according to the present invention is sandblasted to white metal. Primer glue, for example Chemlok No. 220T~ is applied to the metal and a rubber primer, for example Chemlok TY-PLY~ is applied to the metal 6. Primers, for example Chemlok AP-134~H followed by Chemlok 250TM are applied to the ceramic tiles 4 and the rubber coating 8 is pre-heated to 100F.
~ he ceramic tiles 4 are coated with a solution of rubber dissolved in toluene and placed in position on the outer surface of the rubber. The rubber is maintained at a temperature of 100F while the ceramics are compressed into the rubber with mold member 2 or a hydraulic pres~.
Time is allowed for the rubber to flow between the tiles 4 to create the component according to the pre~ent invention.
If a mold is used, as shown in Figure 1, to compress the ceramic tile~ 4 into the rubber, the rubber is bonded to the metal or other surface before being imbedded with aeramic~. If a hydraulic press i9 used to compress the cerami¢ tiles 4 into the ruhbex 8, the composition is bonded to the metal or other surface.
Finally, ~he pxoduct i~ ~team aured in an autoalave.
It should be noted that the aeramic tiles mu~t not be overheated, that ls they should not be at a temperature greate~ than lOO~F for more than a hal~ hour, a~ter the primer~has bèen applied, ba~ore the curing process. Furthermore even pressure must be maintained aaro~s all aeramic tiles until those tiles have been compre~sed into the rubber and the pressure should be maintained during curing if at all possible.
!
:`, , 1 33~702 In general when the ceramic tiles are to be used in contact with particles smaller than 200 mesh the ceramic may be based on alumina.
The present invention, in addition to providing a new product, can also be used to repair existing products. Provided the component has a rubber layer greater than ~" thick a half inch of rubber may be ground out in order to allow room for a composition according to the pre~ent invention. Then the ~teps set out above are followed starting with the application of primer to the ceramic tiles.
In test~ conducted the present invention ha~
produced article~ that are extremely strong in their resistance to wear and vibration.
I
Claims (4)
1. A method of forming a rubber-ceramic coating on a metal surface comprising:
applying a rubber coat to the metal surface;
heating the rubber coat to a temperature of about 100°F;
positioning a plurality of discrete ceramic bodies on the rubber surface;
pressing the ceramic bodies into the rubber coat while maintaining the temperature at a range in which the rubber will not cure; and heating the product to cure the product.
applying a rubber coat to the metal surface;
heating the rubber coat to a temperature of about 100°F;
positioning a plurality of discrete ceramic bodies on the rubber surface;
pressing the ceramic bodies into the rubber coat while maintaining the temperature at a range in which the rubber will not cure; and heating the product to cure the product.
2. A method as claimed in claim 1 including a preliminary step of applying a primer to the metal.
3. A method as claimed in claim 2 including the additional preliminary step of applying a rubber primer to the metal.
4. A method as claimed in claim 1 including the step of applying a primer to the ceramic bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 574903 CA1332702C (en) | 1988-08-16 | 1988-08-16 | Rubber-ceramic composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 574903 CA1332702C (en) | 1988-08-16 | 1988-08-16 | Rubber-ceramic composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1332702C true CA1332702C (en) | 1994-10-25 |
Family
ID=4138561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 574903 Expired - Fee Related CA1332702C (en) | 1988-08-16 | 1988-08-16 | Rubber-ceramic composition |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1332702C (en) |
-
1988
- 1988-08-16 CA CA 574903 patent/CA1332702C/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |