CN105014993A - Manufacturing method for propeller of unmanned aerial vehicle - Google Patents
Manufacturing method for propeller of unmanned aerial vehicle Download PDFInfo
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- CN105014993A CN105014993A CN201410565683.5A CN201410565683A CN105014993A CN 105014993 A CN105014993 A CN 105014993A CN 201410565683 A CN201410565683 A CN 201410565683A CN 105014993 A CN105014993 A CN 105014993A
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- epoxy resin
- carbon cloth
- unmanned plane
- propeller
- cork wood
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Abstract
The invention discloses a propeller of an unmanned aerial vehicle and a manufacturing method for the propeller of the unmanned aerial vehicle. According to the manufacturing method for the propeller of the unmanned aerial vehicle, balsa wood with the weight percentage of 15%-30% serves as a core rod, then a carbon fiber cloth with the weight percentage of 40%-70% is uniformly and tightly twined around the surface of the core rod, then 20%-40% of epoxy resin is mixed into the twined core rod, and the propeller of the unmanned aerial vehicle is prepared through high-pressure resin transfer molding (RTM). According to the propeller manufactured through the manufacturing method, integrated structure molding of one-time compression molding is adopted, and the propeller has the advantages of being high in strength, low in specific weight, low in price, long in service life and the like.
Description
Technical field
The present invention relates to a kind of unmanned vehicles technical field, particularly relate to a kind of preparation method of carbon fibre composite unmanned plane screw.
Background technology
UAV is called for short unmanned plane (UAV), is a kind ofly to be in the equipment of the new concept weapon in developing rapidly, its have maneuverability, reaction fast, unmanned flight, advantage that operation requirements is low.At present, the scope of application of unmanned plane has widened military affairs, scientific research, civilian three large fields, specifically in electric power, communication, meteorology, agricultural, ocean, exploration, photograph, prevent and reduce natural disasters, Crop Estimation, drug law enforcement anti-smuggling, border patrol, the field application such as public security anti-terrorism be very wide.
Due to the characteristic of unmanned plane, require that the material making unmanned plane has the features such as intensity height and light weight, therefore more unmanned plane adopts carbon fibre material.Carbon fibre reinforced composite is one of current state-of-the-art high-performance composite materials, has the features such as high-strength light, high temperature resistant, corrosion-resistant, thermodynamic property is excellent.
Epoxy resin (EP)/carbon fiber (CF) composite is an important branch of CF reinforced composite.In recent years, that is familiar with EP/CF composite along with people deepens continuously, and the performance of its excellence constantly shows especially, impels its consumption constantly to rise.Before 20 century 70s, EP/CF composite is regarded as expensive material, and price is about 10 times of glass fibre (GF) reinforced composite, only for the sophisticated technology such as military project, aerospace industry.After the eighties in 20th century, CF industry and EP industrial boom, the constantly progress of EP/CF complex technique, the CF ratio joined in EP constantly rises, the volume fraction of current CF can reach more than 60%, make the Quality advance of EP/CF composite and prices, widened its application, further promoted the development of EP/CF composite.
The characteristic of EP/CF composite depends primarily on the bonding characteristic between CF, EP and EP and CF.EP/CF composite has excellent performance, compared with steel, the specific strength of EP/CF composite is 4.8 ~ 7.2 times of steel, specific modulus is 3.1 ~ 4.2 times of steel, fatigue strength is about 2.5 times of steel, 3.3 times of aluminium, and high-temperature behavior is good, when operating temperature reaches 400 DEG C, its intensity and modulus remain unchanged substantially.There is density in addition and linear expansion coefficient is little, corrosion-resistant, creep resistant, good integrity, anti-layering, shock resistance etc., in existing structure material, its specific strength, specific modulus overall target are the highest.In machine-shaping process, EP/CF composite has unique advantage such as easy large area global formation, stable molding.
Epoxy resin (EP)/carbon fiber (CF) composite has specific strength, specific modulus is high, density is little, physical dimension is stablized, the advantages such as heat-resisting, low temperature resistant and material property can design, it not only as structural material carrying but also can play a role as functional material, had become the preferred material of aerospace field.At aviation field, CF composite is applied to the features parts of unmanned plane, Helicopter Main structure, aggregated(particle) structure part and privileged sites.The positions such as external fuselage, main wing, the vertical fin wing, the horizontal tail wing and covering EP/CF composite being applied in fighter plane and helicopter, serve obvious loss of weight effect, substantially increase antifatigue, the performance such as corrosion-resistant.
But if all use epoxy resin (EP)/carbon fiber (CF) composite to make unmanned plane material, also can there is certain problem, first is that the price comparison of composite is high, is secondly that the proportion of composite can be heavier.
Prior art utilizes the composite adopting carbon fiber-reinforced resin composite materials and foam core material to be prepared into foam sandwich construction, although mechanics and security performance all reach requirement, but because in the carbon fiber-reinforced resin composite materials of foam sandwich construction, component composition is complicated, in preparation process, due to each component, compatibility is inconsistent each other, surface tension gradient is comparatively large, makes product surface cause the defects such as projection, depression, flow liner or pore due to stress difference.
Find through research and experiment repeatedly, in the process making screw, if make sandwich of layers by adopting lighter wood materials, carry out coated with carbon cloth again, then after adding epoxy resin and other auxiliary agents, through drying the operations such as molded curing, the SUAV screw that lightweight intensity high price is low can be obtained.Test this screw obtained through material composition repeatedly, there is the value of good practicality and the popularization of higher economy, be worth in the field of business wideling popularize.
Summary of the invention
Specific embodiment of the invention process is as follows:
A kind of unmanned plane screw preparation method of the present invention, be that the cork wood of 15%-30% is as core bar by percentage by weight, then be closely wound around at the surface uniform of this core bar and account for the carbon cloth that percentage by weight is 40%-70%, be then mixed into the epoxy resin of 20%-40% and obtained by high-pressure resin Transfer molding (RTM).
The preferred 1K carbon cloth of described carbon cloth, secondaryly selects 3K carbon cloth, again selects the mixture of 1K carbon cloth and 3K carbon cloth.
The proportion of described cork wood is 0.1 ~ 0.3g/cm
3.
Described epoxy-resin systems comprises epoxy resin host and curing agent, and described epoxy resin host is made up of epoxy resin and diluent, defoamer, coupling agent and antioxidant, and described epoxy resin is bisphenol A type epoxy resin.
Described diluent is Isosorbide-5-Nitrae butanediol diglycidyl ether, and described defoamer is silicone based defoamer, and described coupling agent is silane coupling agent, described antioxidant phosphite ester kind antioxidant, and described curing agent is polyamine class aliphatic firming agent.
The making step of described a kind of unmanned plane screw and preparation method thereof is as follows:
Step 1: cleaning RTM mold, releasing agent even application is surperficial in the RTM mold that cleaning is complete; Using the shape of the cork wood contrast screw as core and size, machine-shaping or the pre-backing material as screw, and the cork wood cut is put into mould, the surface of cork wood is closely coated on carbon cloth;
Step 2, RTM mold matched moulds is also fixing, then by epoxy resin host and curing agent, inject above-mentioned RTM mold and cure and demold, namely obtain end article;
Step 3: the solidification temperature in step 2 above after injection ring epoxy resins host and curing agent is 40 ~ 50 DEG C, and hardening time is 12 ~ 18 hours.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: the embodiment of the present invention take cork wood as matrix, have quality easily and absorption other materials advantage, reinforcing material based on carbon fiber, epoxy resin is as filling dispersion, the interface with certain bond strength is formed between three, the load of being born by resin matrix passes to fortifying fibre by interface, to give full play to its humidification thus the bulk strength of raising composite.The high-modulus that carbon fiber has and high rigidity can ensure the structural stability of composite, and its density is little, heat endurance is strong, therefore the carbon fiber that selection bearing load ability is stronger, for mainly to carry component, makes composite have best intensity, rigidity and toughness etc.The screw made by the present invention adopts the monolithic construction of disposable compression molding shaping, has the advantages such as intensity is high, light specific gravity, price are low, long service life.
Detailed description of the invention
In order to make actualizing technology means of the present invention, creation characteristic, reach object and effect is easy to understand, below in conjunction with detailed description of the invention, set forth the present invention further.
Step 1: cleaning RTM mold, carbon fiber releasing agent even application is surperficial in the RTM mold that cleaning is complete;
Step 2; By the proportion 0.2g/cm cut
3cork wood put into mould, carry out coated with model 3K carbon cloth.
Step 3; Again by 80 parts of bisphenol A type epoxy resins, 16 parts 1,4-butanediol diglycidyl ether, 0.1 part of silicone based defoamer, the silane coupling agent of 0.5 part, 0.1 part of phosphite ester kind antioxidant fully stir 45 minutes at 25 DEG C, carry out fully stirring 2 minutes again with 1 part of hexamethylene diamine class curing agent after, remaining component to use in the RTM mold of the coated cork wood of 3K carbon cloth and cure and demold, can obtain final screw goods.Wherein solidification temperature 40 ~ 50 DEG C, hardening time is 12 ~ 18 hours.
In addition, the step of above-mentioned step 1 and step 2 is constant, the number of the bisphenol A type epoxy resin in above-mentioned step 3 is carried out suitable adjustment, by 90 parts of bisphenol A type epoxy resins, 15 parts 1, 4-butanediol diglycidyl ether, 0.5 part of silicone based defoamer, the silane coupling agent of 1 part, 0.5 part of phosphite ester kind antioxidant fully stirs 45 minutes at 25 DEG C, carry out fully stirring 2 minutes again with 1 part of hexamethylene diamine class curing agent after, in the RTM mold of the coated cork wood of remaining component 3K carbon cloth and cure and demold, namely final screw goods are obtained, wherein solidification temperature 40 ~ 50 DEG C, hardening time is 12 ~ 18 hours.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. a unmanned plane screw preparation method, be that the cork wood of 15%-30% is as core bar by percentage by weight, then be closely wound around at the surface uniform of this core bar and account for the carbon cloth that percentage by weight is 40%-70%, be then mixed into the epoxy resin of 20%-40% and obtained by high-pressure resin Transfer molding (RTM).
2. a kind of unmanned plane screw preparation method according to claim 1, is characterized in that: the preferred 1K carbon cloth of described carbon cloth, secondaryly selects 3K carbon cloth, again selects the mixture of 1K carbon cloth and 3K carbon cloth.
3. a kind of unmanned plane screw preparation method according to claim 1, is characterized in that: the proportion of described cork wood is 0.1 ~ 0.3g/cm
3.
4. a kind of unmanned plane screw preparation method according to claim 1, it is characterized in that: described epoxy-resin systems comprises epoxy resin host and curing agent, described epoxy resin host is made up of epoxy resin and diluent, defoamer, coupling agent and antioxidant, and described epoxy resin is bisphenol A type epoxy resin; Described diluent is Isosorbide-5-Nitrae butanediol diglycidyl ether, and described defoamer is silicone based defoamer, and described coupling agent is silane coupling agent, described antioxidant phosphite ester kind antioxidant, and described curing agent is polyamine class aliphatic firming agent.
5. a kind of unmanned plane screw preparation method according to claim 1, is characterized in that: making step of the present invention is as follows:
Step 1: cleaning RTM mold, releasing agent even application is surperficial in the RTM mold that cleaning is complete; Using the shape of the cork wood contrast screw as core and size, machine-shaping or the pre-backing material as screw, and the cork wood cut is put into mould, the surface of cork wood is closely coated on carbon cloth;
Step 2, RTM mold matched moulds is also fixing, then by epoxy resin host and curing agent, inject above-mentioned RTM mold and cure and demold, namely obtain end article;
Step 3: the solidification temperature in step 2 above after injection ring epoxy resins host and curing agent is 40 ~ 50 DEG C, and hardening time is 12 ~ 18 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410565683.5A CN105014993A (en) | 2014-10-23 | 2014-10-23 | Manufacturing method for propeller of unmanned aerial vehicle |
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| CN201410565683.5A CN105014993A (en) | 2014-10-23 | 2014-10-23 | Manufacturing method for propeller of unmanned aerial vehicle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106696383A (en) * | 2015-11-17 | 2017-05-24 | 珠海航太科技有限公司 | Technology for manufacturing high-strength composite main girder of light airplane |
| CN108794989A (en) * | 2018-06-29 | 2018-11-13 | 江苏恒神股份有限公司 | A kind of preparation method of the fluid die resin and fluid die of medium temperature application |
| CN109732942A (en) * | 2018-12-27 | 2019-05-10 | 安徽旭升新材料有限公司 | A method of unmanned plane propeller is made using composite material |
| CN109735098A (en) * | 2018-12-27 | 2019-05-10 | 安徽旭升新材料有限公司 | Unmanned plane propeller production method can be recycled in high-performance |
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| CN102510800A (en) * | 2009-09-14 | 2012-06-20 | 亚历山大·弗格森 | An improved method of and apparatus for making a composite material |
| CN102675827A (en) * | 2012-05-17 | 2012-09-19 | 镇江育达复合材料有限公司 | Epoxy resin-based carbon fibre compound material formed by using high polymer (HP)-resin transfer molding (RTM) process quickly |
| US20130199043A1 (en) * | 2012-02-07 | 2013-08-08 | Henrik Stiesdal | Method of manufacturing a turbine blade, system for manufacturing a turbine blade, intermediate member for manufacturing a turbine blade, and turbine blade manufactured by means of the aforementioned method |
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Patent Citations (6)
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| US5096384A (en) * | 1990-07-27 | 1992-03-17 | The Marley Cooling Tower Company | Plastic fan blade for industrial cooling towers and method of making same |
| CN1954995A (en) * | 2005-10-28 | 2007-05-02 | 通用电气公司 | Methods of making wind turbine rotor blades |
| CN101802391A (en) * | 2007-07-17 | 2010-08-11 | 弗朗西斯科哈维尔·加西亚卡斯特罗 | The manufacture method of wind vane |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106696383A (en) * | 2015-11-17 | 2017-05-24 | 珠海航太科技有限公司 | Technology for manufacturing high-strength composite main girder of light airplane |
| CN106696383B (en) * | 2015-11-17 | 2018-09-04 | 珠海航太科技有限公司 | The technique for making light aerocraft composite material high strength degree girder |
| CN108794989A (en) * | 2018-06-29 | 2018-11-13 | 江苏恒神股份有限公司 | A kind of preparation method of the fluid die resin and fluid die of medium temperature application |
| CN109732942A (en) * | 2018-12-27 | 2019-05-10 | 安徽旭升新材料有限公司 | A method of unmanned plane propeller is made using composite material |
| CN109735098A (en) * | 2018-12-27 | 2019-05-10 | 安徽旭升新材料有限公司 | Unmanned plane propeller production method can be recycled in high-performance |
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Application publication date: 20151104 |