CN114427590B - High-strength PTFE synchronous belt and preparation method thereof - Google Patents
High-strength PTFE synchronous belt and preparation method thereof Download PDFInfo
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- CN114427590B CN114427590B CN202111616283.9A CN202111616283A CN114427590B CN 114427590 B CN114427590 B CN 114427590B CN 202111616283 A CN202111616283 A CN 202111616283A CN 114427590 B CN114427590 B CN 114427590B
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- ptfe
- synchronous belt
- layer
- hnbr
- tooth cloth
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- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 114
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 114
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000004744 fabric Substances 0.000 claims abstract description 44
- 229920001971 elastomer Polymers 0.000 claims abstract description 40
- 239000011248 coating agent Substances 0.000 claims abstract description 37
- 238000000576 coating method Methods 0.000 claims abstract description 37
- 150000001875 compounds Chemical class 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 238000013329 compounding Methods 0.000 claims abstract description 6
- 229920006168 hydrated nitrile rubber Polymers 0.000 claims description 43
- 238000002156 mixing Methods 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 12
- 239000004760 aramid Substances 0.000 claims description 10
- 229920003235 aromatic polyamide Polymers 0.000 claims description 10
- 238000012986 modification Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 68
- 230000000052 comparative effect Effects 0.000 description 10
- 239000003365 glass fiber Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- -1 polytetrafluoroethylene Polymers 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical group [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000004816 latex Substances 0.000 description 3
- 229920000126 latex Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- DGXAGETVRDOQFP-UHFFFAOYSA-N 2,6-dihydroxybenzaldehyde Chemical compound OC1=CC=CC(O)=C1C=O DGXAGETVRDOQFP-UHFFFAOYSA-N 0.000 description 1
- BMFMTNROJASFBW-UHFFFAOYSA-N 2-(furan-2-ylmethylsulfinyl)acetic acid Chemical compound OC(=O)CS(=O)CC1=CC=CO1 BMFMTNROJASFBW-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/28—Driving-belts with a contact surface of special shape, e.g. toothed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
- B29D29/08—Toothed driving belts
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/047—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with fluoropolymers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the field of synchronous belts, and provides a high-strength PTFE synchronous belt which aims at the problem that a PTFE coating of the synchronous belt is difficult to compound with a tooth cloth layer. The PTFE coating is modified to be combined with the tooth cloth layer through a calender. The invention also provides a preparation method of the high-strength PTFE synchronous belt, which comprises the following steps: (1) Pretreating the tooth cloth layer by using RFL, attaching the modified PTFE coating to the tooth cloth layer, and compounding by using a calender to obtain a compound layer; (2) And combining the composite layer with the rubber layer, and vulcanizing to obtain the synchronous belt.
Description
Technical Field
The invention relates to the field of synchronous belts, in particular to a high-strength PTFE synchronous belt and a preparation method thereof.
Background
The synchronous belt is a conveyor belt, integrates the advantages of belt conveying, chain transmission and gear transmission, transmits power by meshing the synchronous belt teeth with tooth grooves of the synchronous belt wheels during transmission, does not need lubrication and has no pollution, and is an ideal conveyor belt which is widely applied to industrial manufacture and transmission of various industries. The abrasion of the synchronous belt is inevitably generated after a period of use, and how to improve the abrasion resistance of the synchronous belt is also a subject of continuous research. Patent EP1157813A1 covers a polytetrafluoroethylene wear-resistant layer on the surface of the synchronous belt to prolong the service life of the synchronous belt, but the polytetrafluoroethylene surface energy is very low and is not easy to be compounded with other materials, and in the actual production process, special equipment is required to compound the polytetrafluoroethylene layer with the canvas layer, and the polytetrafluoroethylene layer is bonded by an adhesive. There is a need for an ideal solution.
Disclosure of Invention
In order to solve the problem that a PTFE coating is difficult to compound with a tooth cloth layer, the invention provides the high-strength PTFE synchronous belt, and the PTFE coating can be combined with the tooth cloth layer through a calender after being modified.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a high strength PTFE hold-in range, includes the rubber layer, and the material on rubber layer is HNBR, and the rubber layer has inlayed the cotton rope along length direction, and the one side surface on rubber layer is continuous round profile of tooth, is equipped with tooth cloth layer and modified PTFE coating on this surface, modified PTFE coating combines with tooth cloth layer through the calender. Polytetrafluoroethylene PTFE has excellent chemical resistance, high and low temperature resistance, dielectric properties, electrical insulating properties, and the like. However, the material has very low surface energy (critical surface tension 1.8 mN/m), extremely high surface hydrophobicity (contact angle with water exceeds 100 degrees), and the compounding of the polytetrafluoroethylene film with other materials is limited. In the prior art, special equipment is needed to paste the PTFE coating on the tooth cloth layer, and the PTFE can be firmly combined with the tooth cloth layer under a common calender by modifying the PTFE, so that an adhesive layer is not needed, the requirement on interlayer composite equipment is reduced, and the short-plate effect caused by the adhesive, such as heat resistance reduction, is avoided.
Preferably, the preparation steps of the modified PTFE coating comprise: firstly, carrying out plasma surface modification on PTFE; mixing the surface modified PTFE and the ZDMA, and stirring at a high speed to coat the ZDMA on the surface of the PTFE; and then mixing the PTFE coated with the surface and HNBR together to obtain a mixed rubber, and curing to obtain the modified PTFE coating. As a further preferred, the combination of the modified PTFE coating, the tooth cloth layer and the rubber layer is performed simultaneously. The invention mixes PTFE and HNBR, thereby converting the combination problem of PTFE and the tooth cloth layer into the combination problem of HNBR rubber layer and the tooth cloth layer, and can carry out the combination of PTFE and the tooth cloth layer and the combination of HNBR rubber layer and the tooth cloth layer under the same condition. However, PTFE and HNBR have poor compatibility and are easily agglomerated, resulting in uneven dispersion. For this purpose, the PTFE surface is coated with zinc methacrylate ZDMA, and the PTFE and HNBR are joined together by ZDMA. PTFE is subjected to conventional plasma surface modification, free radicals and polar groups are exposed, the contact angle is reduced, and after the PTFE is mixed with ZDMA, the ZDMA is preliminarily adsorbed on the surface of PTFE under high-speed stirring; then HNBR is added for mixing, and PTFE is well dispersed in HNBR due to the presence of the ZDMA; in the mixing process, active groups such as double bonds and ionic bonds of ZDMA and the like are further reacted with PTFE and HNBR, the three are tightly connected through the combination of chemical bonds, and cross-linking bonds among the three form a cross-network structure, so that the thermal stability and the mechanical property are improved.
Preferably, the surface-coated PTFE and HNBR are mixed in a mass ratio of (1.6-2): 1. The mixing proportion of PTFE and HNBR is particularly important, and the PTFE content is too low to show the excellent wear resistance; the HNBR content is too low to be beneficial for the combination with the tooth cloth layer.
Preferably, the surface-modified PTFE and the ZDMA are mixed in a mass ratio of 100 (5-20).
Preferably, the rubber layer is HNBR containing aramid short fibers, and the mass ratio of HNBR to aramid short fibers is 100 (1-5). The addition of the aramid staple fiber can obviously improve the tensile stress and the compression modulus of the rubber layer under small strain.
Preferably, the cord is an HNBR glass fiber cord, namely, the surface of the glass fiber is subjected to the dipping treatment of HNBR latex, so that the fatigue resistance of the cord is improved. The glass fiber has the outstanding advantages of high breaking strength, low breaking elongation, good heat resistance, small temperature coefficient, low price and the like, and is the first-choice rope material of the prior rubber synchronous belt. However, glass fibers are brittle, not wear-resistant, and have poor yield strength, and in order to fully develop the advantages of glass fibers, the fatigue resistance must be improved.
Preferably, the tooth part layer is nylon elastic cloth.
The invention also provides a preparation method of the high-strength PTFE synchronous belt, which comprises the following steps:
(1) Pretreating the tooth cloth layer by using RFL, attaching the modified PTFE coating to the tooth cloth layer, and compounding by using a calender to obtain a compound layer; the tooth part layer is pretreated by resorcinol-formaldehyde latex RFL, so that not only can the adhesive property of the tooth cloth layer and the rubber compound be improved, but also the fiber monofilaments of the tooth cloth layer can be effectively isolated, and the fatigue resistance of the fiber monofilaments is improved.
(2) And combining the composite layer with the rubber layer, and vulcanizing to obtain the synchronous belt.
Therefore, the invention has the beneficial effects that: (1) The PTFE is modified to be firmly combined with the tooth cloth layer under a common calender without using an adhesive layer, so that the requirement on interlayer composite equipment is reduced, and short plate effects brought by the adhesive, such as heat resistance reduction, are avoided; (2) The PTFE and HNBR are mixed, so that the problem of combination of the PTFE and the tooth cloth layer is converted into the problem of combination of the HNBR rubber layer and the tooth cloth layer, and the combination of the PTFE and the tooth cloth layer and the combination of the HNBR rubber layer and the tooth cloth layer can be carried out under the same condition.
Drawings
Fig. 1 is a structural diagram of a high strength PTFE synchronous belt of the present invention.
In the figure, 1, a modified PTFE coating, 2, a tooth cloth layer, 3, a rope, 4 and a rubber layer.
Detailed Description
The technical scheme of the invention is further described through specific embodiments.
In the present invention, unless otherwise specified, the materials and equipment used are commercially available or are commonly used in the art, and the methods in the examples are conventional in the art unless otherwise specified.
Example 1
A high-strength PTFE synchronous belt, as shown in figure 1, consists of a rubber layer 4, a rope 3, a tooth cloth layer 2 and a PTFE coating 4. The material of the rubber layer 4 is HNBR containing aramid short fibers, the mass ratio of HNBR to the aramid short fibers is 100:4, and the addition of the aramid short fibers can obviously improve the tensile stress and the compression modulus of the rubber layer under small strain. The rubber layer 4 is embedded with a plurality of cords 3 which are arranged in parallel along the length direction, the cords 3 are HNBR glass fiber cords, namely, the surface of the glass fiber is immersed by HNBR latex, so that the fatigue resistance of the cords is improved. One side surface of the rubber layer 4 is in a continuous gear tooth shape, a tooth layer 2 is arranged on the surface, and nylon elastic cloth is selected as the tooth layer 2. The surface of the tooth cloth layer 2 is coated with a modified PTFE coating 1, and the preparation method of the modified PTFE coating 1 comprises the following steps: 1) Carrying out plasma surface modification on PTFE by adopting a conventional method, wherein the treatment gas for plasma surface treatment is argon, the fixed discharge voltage pressure is 70Pa, the discharge power is 80W, and the discharge is carried out for 10min; 2) Mixing the surface modified PTFE and the ZDMA according to the mass ratio of 100:10, and stirring at a high speed of 1000rpm to coat the ZDMA on the surface of the PTFE; 3) And mixing PTFE coated on the surface with HNBR according to the mass ratio of 1.8:1, heating to a molten state, and mixing for 5 hours to obtain the rubber compound.
The preparation method of the high-strength PTFE synchronous belt comprises the following steps:
(1) Pretreating a tooth cloth layer by using RFL, attaching the rubber compound to the tooth cloth layer, and compounding by using a calender to obtain a compound layer;
(2) And combining the composite layer with the rubber layer, vulcanizing to obtain the synchronous belt, wherein the vulcanizing condition is 160 ℃ multiplied by 10MPa multiplied by tc 90, and standing for 24 hours after vulcanizing.
Example 2
The difference from example 1 is that the mass ratio of HNBR to aramid staple fibers in the rubber layer 4 is 100:1; in the preparation method of the modified PTFE coating 1, surface modified PTFE and ZDMA are mixed according to the mass ratio of 100:5, and surface coated PTFE and HNBR are mixed according to the mass ratio of 1.6:1.
Example 3
The difference from example 1 is that the mass ratio of HNBR to aramid staple fibers in the rubber layer 4 is 100:5; in the preparation method of the modified PTFE coating 1, surface modified PTFE and ZDMA are mixed according to the mass ratio of 100:20, and surface coated PTFE and HNBR are mixed according to the mass ratio of 2:1.
Example 4
The difference from example 1 is that the preparation method of the PTFE synchronous belt is as follows: RFL is used for pretreatment of the tooth cloth layer, the modified PTFE coating obtained by solidifying the rubber layer and the rubber compound is respectively placed on two sides of the tooth cloth layer, and the synchronous belt is obtained by vulcanization.
Comparative example 1
The difference from example 1 is that the preparation method of the modified PTFE coating is 1) plasma surface modification is carried out on PTFE by adopting a conventional method, the treatment gas of plasma surface treatment is argon, the fixed discharge voltage pressure is 70Pa, the discharge power is 80W, and the discharge is carried out for 10min; 2) Mixing the surface modified PTFE and HNBR according to the mass ratio of 1.8:1, heating to a molten state, and mixing for 5 hours to obtain the rubber compound.
Comparative example 2
The difference from example 1 is that in the preparation method of the modified PTFE coating, the surface-coated PTFE and HNBR are mixed according to the mass ratio of 1.3:1.
Comparative example 3
The difference from example 1 is that in the preparation method of the modified PTFE coating, the surface-coated PTFE and HNBR are mixed according to the mass ratio of 2.5:1.
Comparative example 4
The difference from example 1 is that the PTFE coating is not modified.
Performance testing
The synchronous belts prepared in the examples and comparative examples were subjected to performance test in the supplied state, and the results are shown in the following table.
As can be seen from the table, the synchronous belt prepared by the embodiments of the invention has excellent mechanical properties and high temperature resistance. Comparative example 4 the PTFE coating was not modified and the PTFE coating of comparative example 4 had much lower adhesive strength than example 1 under the same compounding conditions, and could not meet the service requirements well. Compared with the embodiment 1, the embodiment 4 is characterized in that the mixed rubber is solidified into the modified PTFE coating, and then the modified PTFE coating is vulcanized and combined with the rubber layer and the tooth cloth layer, so that the influence on the performance of the synchronous belt is small, and the defect that the modified PTFE coating can be really compounded with the rubber layer and the tooth cloth layer, and the PTFE coating can be compounded with the tooth cloth layer without special equipment is overcome. Compared with the embodiment 1, the comparative example 1 has the advantages that the PTFE is not subjected to ZDMA coating treatment, the bonding strength of the PTFE coating is inferior to that of the embodiment 1, because the PTFE and HNBR are poor in compatibility and easy to agglomerate, uneven dispersion is caused, the PTFE surface is coated with the ZDMA, the compatibility can be improved, the active groups such as double bonds and ionic bonds of the ZDMA are further reacted with the PTFE and the HNBR, the three are tightly connected through the combination of chemical bonds, and the cross-linking bonds among the three form a cross-network structure, so that the thermal stability and the mechanical property are improved. In the preparation method of the modified PTFE coating, in comparative example 2, when PTFE coated on the surface and HNBR are mixed, the PTFE content is less and lower than the preferred value, in contrast to comparative example 3, the PTFE content is higher than the preferred value, and the mechanical properties of both are inferior to those of example 1, because the mixing proportion of PTFE and HNBR is particularly important, the PTFE content is too low, and the excellent wear resistance is not reflected; the HNBR content is too low to be beneficial for the combination with the tooth cloth layer.
The present invention is not limited to the above-mentioned embodiments, but is intended to be limited to the following embodiments, and any modifications, equivalent changes and variations in the above-mentioned embodiments can be made by those skilled in the art without departing from the scope of the present invention.
Claims (7)
1. The high-strength PTFE synchronous belt is characterized by comprising a rubber layer, wherein the rubber layer is made of HNBR, a rope is embedded in the rubber layer along the length direction, one side surface of the rubber layer is in a continuous wheel tooth shape, a tooth cloth layer and a modified PTFE coating are arranged on the surface, and the modified PTFE coating is combined with the tooth cloth layer through a calender;
the preparation steps of the modified PTFE coating comprise: firstly, carrying out plasma surface modification on PTFE; mixing the surface modified PTFE and the ZDMA, and stirring at a high speed to coat the ZDMA on the surface of the PTFE; and then mixing the PTFE coated with the surface and HNBR together to obtain a mixed rubber, and curing to obtain the modified PTFE coating.
2. The high-strength PTFE synchronous belt according to claim 1, wherein the surface-coated PTFE and HNBR are mixed in a mass ratio of (1.6-2): 1.
3. A high strength PTFE synchronous belt according to claim 1 or 2, characterized in that the surface modified PTFE and ZDMA are mixed in a mass ratio of 100 (5-20).
4. The high-strength PTFE synchronous belt according to claim 1, wherein the rubber layer is HNBR containing aramid short fibers, and the mass ratio of HNBR to aramid short fibers is 100 (1-5).
5. The high strength PTFE synchronous belt of claim 1 wherein the cord is HNBR fiberglass cord.
6. The high strength PTFE synchronous belt of claim 1, 4 or 5 wherein the tooth cloth layer is nylon stretch cloth.
7. A method of making a high strength PTFE synchronous belt according to any one of claims 1-6, comprising the steps of: (1) Pretreating the tooth cloth layer by using RFL, attaching the modified PTFE coating to the tooth cloth layer, and compounding by using a calender to obtain a compound layer;
(2) And combining the composite layer with the rubber layer, and vulcanizing to obtain the synchronous belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111616283.9A CN114427590B (en) | 2021-12-27 | 2021-12-27 | High-strength PTFE synchronous belt and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111616283.9A CN114427590B (en) | 2021-12-27 | 2021-12-27 | High-strength PTFE synchronous belt and preparation method thereof |
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| Publication Number | Publication Date |
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| CN114427590A CN114427590A (en) | 2022-05-03 |
| CN114427590B true CN114427590B (en) | 2024-02-09 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6540866B1 (en) * | 1999-06-29 | 2003-04-01 | Institute Of Microelectronics | Method for lamination of fluoropolymer to metal and printed circuit board (PCB) substrate |
| WO2007036959A1 (en) * | 2005-09-27 | 2007-04-05 | Dayco Europe S.R.L. Con Unico Socio | Belt drive for use in oil provided with a shoe |
| CN101842610A (en) * | 2007-09-12 | 2010-09-22 | 戴科欧洲研究科学实验室 | Power transmission belt comprising a coating treatment of the fabric and coating treatment thereof |
| CN102803787A (en) * | 2009-04-06 | 2012-11-28 | 戴科欧洲有限公司 | Toothed belt and use of a toothed belt in oil |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1320359B1 (en) * | 2000-05-23 | 2003-11-26 | Dayco Europe Srl | TOOTHED BELT. |
-
2021
- 2021-12-27 CN CN202111616283.9A patent/CN114427590B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6540866B1 (en) * | 1999-06-29 | 2003-04-01 | Institute Of Microelectronics | Method for lamination of fluoropolymer to metal and printed circuit board (PCB) substrate |
| WO2007036959A1 (en) * | 2005-09-27 | 2007-04-05 | Dayco Europe S.R.L. Con Unico Socio | Belt drive for use in oil provided with a shoe |
| CN101842610A (en) * | 2007-09-12 | 2010-09-22 | 戴科欧洲研究科学实验室 | Power transmission belt comprising a coating treatment of the fabric and coating treatment thereof |
| CN102803787A (en) * | 2009-04-06 | 2012-11-28 | 戴科欧洲有限公司 | Toothed belt and use of a toothed belt in oil |
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| Publication number | Publication date |
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| CN114427590A (en) | 2022-05-03 |
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