CN111730875A - Preparation method of low-voltage large-stroke electrothermal brake - Google Patents
Preparation method of low-voltage large-stroke electrothermal brake Download PDFInfo
- Publication number
- CN111730875A CN111730875A CN202010529423.8A CN202010529423A CN111730875A CN 111730875 A CN111730875 A CN 111730875A CN 202010529423 A CN202010529423 A CN 202010529423A CN 111730875 A CN111730875 A CN 111730875A
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- China
- Prior art keywords
- brake
- stroke
- composite
- electrothermal
- low
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/16—Frictional elements, e.g. brake or clutch linings
Abstract
The invention provides a preparation method of an electrothermal brake with low external driving voltage and large braking stroke. The electric heating brake with low external driving voltage and large braking stroke is obtained by combining a conductive nano material with a special composite silicon resin and storing certain strain energy in advance. The invention provides a preparation method of a low-voltage large-stroke electric heating brake, and the prepared electric heating brake has the technical and economic advantages of energy conservation and large stroke.
Description
Technical Field
The invention relates to the technical field of brake preparation by using conductive nano composite materials, in particular to a preparation method of a low-voltage large-stroke electrothermal brake.
Background
The brake has wide application, and the types of brakes developed at present include electrostriction, magnetostriction, piezoelectric braking, pneumatic braking, shape memory braking and electrochemical braking. In the braking mechanism, there have been developed: utilizing anisotropic thermal expansion performance, phase change volume expansion, ion migration swelling, photo-thermal effect capacitance effect, pressure increase and decrease effect and the like. The research hot spots at home and abroad on various brakes mainly focus on the aspects of improving the braking effect, reducing the input power, improving the reliability and stability of braking and the like.
The invention provides a preparation method of a low-voltage large-stroke electrothermal brake, and the electrothermal brake with energy saving and large stroke is obtained.
Disclosure of Invention
The purpose of the invention is: the preparation method of the low-voltage large-stroke electrothermal brake is provided, the electrothermal brake with energy saving and large stroke is obtained, and the comprehensive performance of the brake is improved.
The technical concept principle of the invention is as follows: the electric conductivity and mechanical property of the conductive nano material are coupled with the comprehensive electric effect and thermal effect of the composite silicon resin, the conductive nano material is coated on a fiber bundle formed by twisting the conductive nano material for chelation and solidification, and the fiber bundle is twisted under a proper variable load and is coiled for 2 times to form the electrothermal brake with low voltage and long stroke. Based on the principle, the technical scheme for realizing the invention is as follows:
(a) twisting the strip-shaped conductive nano material into a fiber bundle;
(b) uniformly mixing Mold Max 25 and Ecoflex 00-50 blended silicon resins according to the mass ratio of 1:1, coating the mixture on twisted synthetic fiber bundles, and then twisting out and wiping off redundant composite silicon resins;
(c) suspending the prepared conductive fiber-composite silicon resin compound in air, chelating and curing for more than 12 hours;
(d) fixing one end of the chelated and cured conductive fiber-composite silicon resin compound, twisting the other end in a clockwise or anticlockwise direction in a variable load mode, and coiling in the same direction for 2 times to form the low-voltage large-stroke electric heating brake.
The main creativity of the invention is as follows: when the prepared composite silicon resin compound is used for twisting fiber bundles synthesized by the conductive nano materials and twisting the fiber bundles for 2 turns in the same direction in a variable load mode to form the electrothermal brake, a large braking stroke can be obtained under the condition of lower external voltage, the brake has the characteristics of low voltage and large stroke, and the preparation process is easy to regulate and control.
Compared with the prior art, the invention has the following main advantages: the electrothermal brake prepared by the method has the technical and economic advantages of energy conservation and large stroke, and the preparation process of the composite silicon resin compound is simple and easy to control and has low cost.
Detailed Description
Example 1 was carried out:
(a) taking 30 layers of carbon nanotube belts with the length of 4cm and the width of 2cm, twisting the carbon nanotube belts into a fiber bundle with the diameter of about 0.15 mm;
(b) silicone rubber compounds a and B, trademarks of Mold Max 25, were prepared as 100A: 5B, and mixing the silicone rubber compound A and the silicone rubber compound B with the trademark of Ecoflex 00-50 according to the mass ratio of 1A: 1B, uniformly mixing the two materials in a mass ratio of 1:1 to obtain composite silicone resin, and coating the composite silicone resin on a fiber bundle formed by twisting conductive nano materials;
(c) squeezing out the redundant composite silicone resin, and then suspending in the air to chelate and cure for more than 12 hours to obtain a uniform conductive fiber-composite silicone resin compound;
(d) fixing one end of the chelated and cured composite fiber, adding 20g of load to the other end of the chelated and cured composite fiber, and twisting clockwise until the 1 st turn of coiling is realized by the composite carbon fiber, then changing the load to be 10g, and twisting clockwise until the 2 nd turn of coiling is realized by the composite carbon fiber in the same direction, thereby forming the low-voltage large-stroke electrothermal brake.
The braking performance test shows that: when 8V/0.05Hz square wave voltage is applied to the sample and the load is 26g, the braking stroke of the sample can reach 32 +/-3%.
Example 2 was carried out:
(a) 50 layers of carbon nanotube belts with the length of 4cm and the width of 1.5cm are taken and twisted into a fiber bundle with the diameter of about 0.17 mm;
(b) silicone rubber compounds a and B, trademarks of Mold Max 25, were prepared as 100A: 5B, and mixing the silicone rubber compound A and the silicone rubber compound B with the trademark of Ecoflex 00-50 according to the mass ratio of 1A: 1B, uniformly mixing the two materials in a mass ratio of 1:1 to obtain composite silicone resin, and coating the composite silicone resin on a fiber bundle formed by twisting conductive nano materials;
(c) squeezing out the redundant composite silicone resin, and then suspending in the air to chelate and cure for more than 12 hours to obtain a uniform conductive fiber-composite silicone resin compound;
(d) fixing one end of the chelated and cured composite fiber, adding 20g of load to the other end of the chelated and cured composite fiber, and twisting clockwise until the 1 st turn of coiling is realized by the composite carbon fiber, then changing the load to be 10g, and twisting clockwise until the 2 nd turn of coiling is realized by the composite carbon fiber in the same direction, thereby forming the low-voltage large-stroke electrothermal brake.
The braking performance test shows that: when 8V/0.05Hz square wave voltage is applied to the sample and the load is 26g, the braking stroke of the sample can reach 33 +/-3 percent.
Claims (1)
1. A method for preparing a low-voltage large-stroke electrothermal brake is characterized in that (a) a silicone rubber compound A and a silicone rubber compound B with the trademark of Mold Max 25 are prepared according to the proportion of 100A: 5B, and mixing the silicone rubber compound A and the silicone rubber compound B with the trademark of Ecoflex 00-50 according to the mass ratio of 1A: 1B, uniformly mixing the two materials in a mass ratio of 1:1 to obtain composite silicone resin, and coating the composite silicone resin on a fiber bundle formed by twisting conductive nano materials; (b) and twisting and extruding redundant composite silicon resin, then suspending the composite silicon resin in the air for chelation and curing for more than 12 hours to obtain a uniform conductive fiber-composite silicon resin compound, fixing one end of the conductive fiber-composite silicon resin compound after chelation and curing, and twisting the other end of the conductive fiber-composite silicon resin compound in a clockwise or anticlockwise direction in a variable load mode to realize 2 rounds of equidirectional coiling to form the low-voltage large-stroke electrothermal brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010529423.8A CN111730875A (en) | 2020-06-11 | 2020-06-11 | Preparation method of low-voltage large-stroke electrothermal brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010529423.8A CN111730875A (en) | 2020-06-11 | 2020-06-11 | Preparation method of low-voltage large-stroke electrothermal brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111730875A true CN111730875A (en) | 2020-10-02 |
Family
ID=72648753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010529423.8A Pending CN111730875A (en) | 2020-06-11 | 2020-06-11 | Preparation method of low-voltage large-stroke electrothermal brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111730875A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958394A (en) * | 2009-07-17 | 2011-01-26 | 鸿富锦精密工业（深圳）有限公司 | Electrostriction composite material and electrostriction element |
| CN103306924A (en) * | 2012-03-15 | 2013-09-18 | 通用汽车环球科技运作有限责任公司 | Multi-segmented active material actuator |
| US20160025077A1 (en) * | 2014-07-23 | 2016-01-28 | Tsinghua University | Electrothermal composite material and electrothermal actuator using the same |
| CN107297929A (en) * | 2017-06-16 | 2017-10-27 | 福建师范大学 | Activate material and compound bending type actuator and preparation method thereof |
| CN109088563A (en) * | 2018-09-30 | 2018-12-25 | 中国地质大学（武汉） | Carbon nano-tube fibre compound structure type electromagnetic actuators |
-
2020
- 2020-06-11 CN CN202010529423.8A patent/CN111730875A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958394A (en) * | 2009-07-17 | 2011-01-26 | 鸿富锦精密工业（深圳）有限公司 | Electrostriction composite material and electrostriction element |
| CN103306924A (en) * | 2012-03-15 | 2013-09-18 | 通用汽车环球科技运作有限责任公司 | Multi-segmented active material actuator |
| US20160025077A1 (en) * | 2014-07-23 | 2016-01-28 | Tsinghua University | Electrothermal composite material and electrothermal actuator using the same |
| CN107297929A (en) * | 2017-06-16 | 2017-10-27 | 福建师范大学 | Activate material and compound bending type actuator and preparation method thereof |
| CN109088563A (en) * | 2018-09-30 | 2018-12-25 | 中国地质大学（武汉） | Carbon nano-tube fibre compound structure type electromagnetic actuators |
Non-Patent Citations (1)
| Title |
|---|
| 王琪民: "《微机电系统工程基础》", 31 January 2010, 合肥：中国科学技术大学出版社, pages: 163 * |
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