CN114427590A - 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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- CN114427590A CN114427590A CN202111616283.9A CN202111616283A CN114427590A CN 114427590 A CN114427590 A CN 114427590A CN 202111616283 A CN202111616283 A CN 202111616283A CN 114427590 A CN114427590 A CN 114427590A
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- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 118
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 118
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title abstract description 15
- 239000004744 fabric Substances 0.000 claims abstract description 43
- 229920001971 elastomer Polymers 0.000 claims abstract description 39
- 239000011248 coating agent Substances 0.000 claims abstract description 32
- 238000000576 coating method Methods 0.000 claims abstract description 32
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 238000013329 compounding Methods 0.000 claims abstract description 6
- 229920006168 hydrated nitrile rubber Polymers 0.000 claims description 46
- 238000002156 mixing Methods 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 11
- 239000004760 aramid Substances 0.000 claims description 10
- 229920003235 aromatic polyamide Polymers 0.000 claims description 10
- 238000012986 modification Methods 0.000 claims description 8
- 230000004048 modification Effects 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 64
- 230000000052 comparative effect Effects 0.000 description 9
- -1 polytetrafluoroethylene Polymers 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical group [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011247 coating layer Substances 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
- 239000012790 adhesive layer Substances 0.000 description 2
- 229910052786 argon Inorganic materials 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
- 239000011521 glass Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 238000004073 vulcanization 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
- 238000005299 abrasion Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion 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
- 238000009413 insulation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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 aiming 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 by the invention, so that the PTFE coating can 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 RFL, attaching the modified PTFE coating to the tooth cloth layer, and compounding by a calender to obtain a composite 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 the tooth grooves of the synchronous belt wheel during transmission, does not need lubrication and is pollution-free, is an ideal conveyor belt, and is widely applied to industrial manufacturing and transmission in various industries. The wear of the timing belt inevitably occurs after a period of use, and how to improve the wear resistance of the timing belt is a subject of continuous research. Patent EP1157813A1 covers polytetrafluoroethylene wearing layer on the hold-in range surface to the life of extension hold-in range, but polytetrafluoroethylene surface energy is very low, is difficult with other materials complex, and this patent needs special equipment to compound polytetrafluoroethylene layer and canvas layer in the actual production process, and will pass through the adhesive bonding. Accordingly, an ideal solution is needed.
Disclosure of Invention
The invention provides a high-strength PTFE synchronous belt for overcoming the problem that a PTFE coating is difficult to be compounded with a tooth cloth layer.
In order to achieve the purpose, the 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 cotton rope has been inlayed along length direction on the rubber layer, and one side surface on rubber layer is continuous wheel profile of tooth, should be equipped with tooth cloth layer and modified PTFE coating on the surface, modified PTFE coating passes through the calender and combines with tooth cloth layer. The polytetrafluoroethylene PTFE has excellent chemical corrosion resistance, high and low temperature resistance, dielectric property, electric insulation property and the like. But because the surface energy of the material is very low (the critical surface tension is 1.8mN/m), the surface hydrophobicity is extremely high (the contact angle with water is more than 100 degrees), and the combination of the polytetrafluoroethylene film and other materials is limited. In the prior art, special equipment is needed to attach the PTFE coating to the tooth cloth layer, and the PTFE is subjected to modification treatment, so that the PTFE can be firmly combined with the tooth cloth layer under a common calender without using an adhesive layer, thereby not only reducing the requirements on interlayer compounding equipment, but also avoiding short plate effects caused by the adhesive, such as heat resistance reduction and the like.
Preferably, the preparation step of the modified PTFE coating comprises the following steps: firstly, carrying out plasma surface modification on PTFE; then 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 on the surface and HNBR together to obtain a rubber compound, and curing to obtain the modified PTFE coating. Further preferably, the modified PTFE coating layer, the tooth cloth layer, and the rubber layer are bonded simultaneously. According to the invention, the PTFE and the 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. However, the compatibility between PTFE and HNBR is poor, and the PTFE is easy to agglomerate, so that the dispersion is not uniform. For this purpose, the surface of PTFE was coated with zinc methacrylate ZDMA, and PTFE and HNBR were bonded together by ZDMA. PTFE is subjected to conventional plasma surface modification to expose free radicals and polar groups, the contact angle is reduced, and after the PTFE is mixed with ZDMA, the ZDMA is initially adsorbed on the surface of the PTFE under high-speed stirring; then HNBR is added for mixing, and PTFE is well dispersed in HNBR due to the existence of ZDMA; in the mixing process, active groups such as double bonds and ionic bonds of the ZDMA further react with the PTFE and the HNBR, the ZDMA, the PTFE and the HNBR are tightly connected through the combination of chemical bonds, and cross-linking bonds among the ZDMA, the PTFE and the HNBR 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 ratio of PTFE and HNBR is particularly important, and the PTFE content is too low, so that the excellent wear resistance of the PTFE cannot be shown; the HNBR content is too low to be combined 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 short fiber can obviously improve the definite elongation stress and the compressive 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 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 a preferred cord material for the rubber synchronous belt at present. However, glass fibers are brittle, have poor abrasion resistance and poor flex resistance, and in order to fully exploit the advantages of glass fibers, it is necessary to improve the fatigue resistance.
Preferably, the tooth 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 RFL, attaching the modified PTFE coating to the tooth cloth layer, and compounding by a calender to obtain a composite layer; the tooth part layer is pretreated by resorcinol-formaldehyde latex RFL, so that the adhesion property of the tooth cloth layer and rubber compound can be improved, and meanwhile, the fiber monofilaments of the tooth cloth layer are effectively isolated, and the fatigue resistance of the tooth cloth layer is improved.
(2) And combining the composite layer with the rubber layer, and vulcanizing to obtain the synchronous belt.
Therefore, the beneficial effects of the invention are as follows: (1) PTFE is subjected to modification treatment, so that the PTFE can be firmly combined with a tooth cloth layer under a common calender without using an adhesive layer, thereby not only reducing the requirements on interlayer composite equipment, but also avoiding short plate effects caused by the adhesive, such as heat resistance reduction and the like; (2) the PTFE and the HNBR are mixed, so that the combination problem of the PTFE and the tooth cloth layer is converted into the combination problem 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 schematic diagram of the high strength PTFE synchronous belt of the present invention.
In the figure, 1, a modified PTFE coating layer, 2, a tooth cloth layer, 3, a thread rope, 4 and a rubber layer.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
In the present invention, unless otherwise specified, all the raw materials and equipment used are commercially available or 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 is composed of a rubber layer 4, a thread rope 3, a tooth cloth layer 2 and a PTFE coating layer 4 as shown in figure 1. The rubber layer 4 is made of HNBR containing aramid short fibers, the mass ratio of HNBR to 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. Rubber layer 4 has inlayed a plurality of cotton ropes 3 of parallel arrangement along length direction, and cotton rope 3 is the fine cotton rope of HNBR glass, and the fine surface of glass improves the fatigue resistance ability of cotton rope through the dip treatment of HNBR latex promptly. One side surface of the rubber layer 4 is in a continuous wheel tooth shape, a tooth cloth layer 2 is arranged on the surface, and the tooth cloth layer 2 is made of nylon elastic cloth. 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) performing plasma surface modification on PTFE by adopting a conventional method, wherein the processing gas for plasma surface treatment is argon, the fixed discharge voltage pressure is 70Pa, the discharge power is 80W, and the discharge time is 10 min; 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 (3) mixing the PTFE and HNBR coated on the surface 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 the tooth cloth layer by RFL, attaching the rubber compound to the tooth cloth layer, and compounding by a calender to obtain a composite layer;
(2) and combining the composite layer with the rubber layer, vulcanizing to obtain the synchronous belt, wherein the vulcanization condition is 160 ℃ multiplied by 10MPa multiplied by tc 90, and standing for 24 hours after vulcanization.
Example 2
The difference from the example 1 is that the mass ratio of HNBR to aramid short fiber in the rubber layer 4 is 100: 1; in the preparation method of the modified PTFE coating 1, the surface modified PTFE and the ZDMA are mixed according to the mass ratio of 100:5, and the surface coated PTFE and the HNBR are mixed according to the mass ratio of 1.6: 1.
Example 3
The difference from the example 1 is that the mass ratio of HNBR to aramid short fiber in the rubber layer 4 is 100: 5; in the preparation method of the modified PTFE coating 1, the surface modified PTFE and the ZDMA are mixed according to the mass ratio of 100:20, and the surface coated PTFE and the HNBR are mixed according to the mass ratio of 2: 1.
Example 4
The difference from the example 1 is that the preparation method of the PTFE synchronous belt comprises the following steps: and (3) pretreating the tooth cloth layer by RFL, respectively placing the rubber layer and the modified PTFE coating obtained by curing the mixed rubber on two sides of the tooth cloth layer, and vulcanizing to obtain the synchronous belt.
Comparative example 1
The difference from the embodiment 1 is that the preparation method of the modified PTFE coating is 1) the plasma surface modification is carried out on the PTFE by adopting a conventional method, the processing gas for the plasma surface treatment is argon, the fixed discharge voltage pressure is 70Pa, the discharge power is 80W, and the discharge time is 10 min; 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 in a 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 in a 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 performance of the belts prepared in the examples and comparative examples was tested as supplied and the results are shown in the table below.
As can be seen from the table, the synchronous belt prepared by the embodiments of the invention has excellent mechanical property and high temperature resistance. Comparative example 4 no modification was made to the PTFE coating, and the PTFE coating of comparative example 4 had much lower bond strength than example 1 under the same compounding conditions and did not meet the service requirements well. Compared with the embodiment 1, the embodiment 4 firstly cures the mixing rubber 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 performance of the synchronous belt is not greatly influenced. Compared with the embodiment 1, the PTFE is not subjected to ZDMA coating treatment, the adhesive strength of a PTFE coating is inferior to that of the embodiment 1, the PTFE and HNBR have poor compatibility and are easy to agglomerate to cause uneven dispersion, ZDMA is coated on the surface of the PTFE to improve the compatibility, and active groups such as double bonds, ionic bonds and the like of ZDMA are further reacted with the PTFE and the HNBR to be 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. Comparative example 2 in the preparation method of the modified PTFE coating, when the PTFE and HNBR coated on the surface are mixed, the PTFE content is less than the preferred value, the opposite is true to the comparative example 3, the PTFE content is higher than the preferred value, and the mechanical properties of the PTFE and HNBR are not the same as those of example 1, because the mixing ratio of the PTFE and HNBR is particularly important, and the PTFE content is too low, the excellent wear resistance is not shown; the HNBR content is too low to be combined with the tooth cloth layer.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a high strength PTFE hold-in range, its characterized in that, includes the rubber layer, and the material on rubber layer is HNBR, and the cotton rope has been inlayed along length direction in the rubber layer, and one side surface on rubber layer is continuous wheel profile of tooth, should be equipped with tooth cloth layer and modified PTFE coating on the surface, modified PTFE coating combines with tooth cloth layer through the calender.
2. The high-strength PTFE synchronous belt according to claim 1, wherein the modified PTFE coating is prepared by the following steps: firstly, carrying out plasma surface modification on PTFE; then 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 on the surface and HNBR together to obtain a rubber compound, and curing to obtain the modified PTFE coating.
3. The high-strength PTFE synchronous belt according to the claim 2, wherein the surface-coated PTFE and HNBR are mixed in a mass ratio of (1.6-2): 1.
4. The high-strength PTFE synchronous belt according to claim 2 or 3, wherein the surface-modified PTFE and the ZDMA are mixed in a mass ratio of 100 (5-20).
5. 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 the HNBR to the aramid short fibers is 100 (1-5).
6. The high strength PTFE synchronous belt of claim 1, wherein the cords are HNBR glass fiber cords.
7. The high-strength PTFE synchronous belt according to the claim 1, the claim 5 or the claim 6, wherein the tooth layer is nylon elastic cloth.
8. A method for preparing a high-strength PTFE synchronous belt as defined in any one of claims 1 to 7, comprising the steps of: (1) pretreating the tooth cloth layer by RFL, attaching the modified PTFE coating to the tooth cloth layer, and compounding by a calender to obtain a composite 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 true CN114427590A (en) | 2022-05-03 |
| CN114427590B CN114427590B (en) | 2024-02-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020015825A1 (en) * | 2000-05-23 | 2002-02-07 | Meco Marco Di | Toothed belt |
| 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 |
-
2021
- 2021-12-27 CN CN202111616283.9A patent/CN114427590B/en active Active
Patent Citations (5)
| 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 |
| US20020015825A1 (en) * | 2000-05-23 | 2002-02-07 | Meco Marco Di | Toothed belt |
| 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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| CN114427590B (en) | 2024-02-09 |
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